diff --git a/lib/jasmine-core/jasmine.js b/lib/jasmine-core/jasmine.js
index 9f7e3106..2616482f 100644
--- a/lib/jasmine-core/jasmine.js
+++ b/lib/jasmine-core/jasmine.js
@@ -1,5 +1,5 @@
 /*
-Copyright (c) 2008-2019 Pivotal Labs
+Copyright (c) 2008-2020 Pivotal Labs
 
 Permission is hereby granted, free of charge, to any person obtaining
 a copy of this software and associated documentation files (the
@@ -106,6 +106,7 @@ var getJasmineRequireObj = (function(jasmineGlobal) {
     j$.DiffBuilder = jRequire.DiffBuilder(j$);
     j$.NullDiffBuilder = jRequire.NullDiffBuilder(j$);
     j$.ObjectPath = jRequire.ObjectPath(j$);
+    j$.MismatchTree = jRequire.MismatchTree(j$);
     j$.GlobalErrors = jRequire.GlobalErrors(j$);
 
     j$.Truthy = jRequire.Truthy(j$);
@@ -4187,20 +4188,54 @@ getJasmineRequireObj().toBeResolvedTo = function(j$) {
   };
 };
 
-getJasmineRequireObj().DiffBuilder = function(j$) {
+getJasmineRequireObj().DiffBuilder = function (j$) {
   return function DiffBuilder(config) {
-    var path = new j$.ObjectPath(),
-        mismatches = [],
-        prettyPrinter = (config || {}).prettyPrinter || j$.makePrettyPrinter();
+    var prettyPrinter = (config || {}).prettyPrinter || j$.makePrettyPrinter(),
+      mismatches = new j$.MismatchTree(),
+      path = new j$.ObjectPath(),
+      actualRoot = undefined,
+      expectedRoot = undefined;
 
     return {
-      record: function (actual, expected, formatter) {
-        formatter = formatter || defaultFormatter;
-        mismatches.push(formatter(actual, expected, path, prettyPrinter));
+      setRoots: function (actual, expected) {
+        actualRoot = actual;
+        expectedRoot = expected;
+      },
+
+      recordMismatch: function (formatter) {
+        mismatches.add(path, formatter);
       },
 
       getMessage: function () {
-        return mismatches.join('\n');
+        var messages = [];
+
+        mismatches.traverse(function (path, isLeaf, formatter) {
+          var actualCustom, expectedCustom, useCustom,
+            actual = path.dereference(actualRoot),
+            expected = path.dereference(expectedRoot);
+
+          if (formatter) {
+            messages.push(formatter(actual, expected, path, prettyPrinter));
+            return true;
+          }
+
+          actualCustom = prettyPrinter.customFormat_(actual);
+          expectedCustom = prettyPrinter.customFormat_(expected);
+          useCustom = !(j$.util.isUndefined(actualCustom) && j$.util.isUndefined(expectedCustom));
+
+          if (useCustom) {
+            messages.push(wrapPrettyPrinted(actualCustom, expectedCustom, path));
+            return false; // don't recurse further
+          }
+
+          if (isLeaf) {
+            messages.push(defaultFormatter(actual, expected, path, prettyPrinter));
+          }
+
+          return true;
+        });
+
+        return messages.join('\n');
       },
 
       withPath: function (pathComponent, block) {
@@ -4211,12 +4246,16 @@ getJasmineRequireObj().DiffBuilder = function(j$) {
       }
     };
 
-    function defaultFormatter (actual, expected, path, prettyPrinter) {
+    function defaultFormatter(actual, expected, path, prettyPrinter) {
+      return wrapPrettyPrinted(prettyPrinter(actual), prettyPrinter(expected), path);
+    }
+
+    function wrapPrettyPrinted(actual, expected, path) {
       return 'Expected ' +
         path + (path.depth() ? ' = ' : '') +
-        prettyPrinter(actual) +
+        actual +
         ' to equal ' +
-        prettyPrinter(expected) +
+        expected +
         '.';
     }
   };
@@ -4293,7 +4332,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
     if (asymmetricA) {
       result = a.asymmetricMatch(b, shim);
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
@@ -4301,7 +4340,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
     if (asymmetricB) {
       result = b.asymmetricMatch(a, shim);
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
@@ -4319,6 +4358,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
 
     customTesters = customTesters || this.customTesters_;
     diffBuilder = diffBuilder || j$.NullDiffBuilder();
+    diffBuilder.setRoots(a, b);
 
     return this.eq_(a, b, [], [], customTesters, diffBuilder);
   };
@@ -4337,7 +4377,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
       var customTesterResult = customTesters[i](a, b);
       if (!j$.util.isUndefined(customTesterResult)) {
         if (!customTesterResult) {
-          diffBuilder.record(a, b);
+          diffBuilder.recordMismatch();
         }
         return customTesterResult;
       }
@@ -4346,7 +4386,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
     if (a instanceof Error && b instanceof Error) {
       result = a.message == b.message;
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
@@ -4356,7 +4396,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
     if (a === b) {
       result = a !== 0 || 1 / a == 1 / b;
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
@@ -4364,13 +4404,13 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
     if (a === null || b === null) {
       result = a === b;
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
     var className = Object.prototype.toString.call(a);
     if (className != Object.prototype.toString.call(b)) {
-      diffBuilder.record(a, b);
+      diffBuilder.recordMismatch();
       return false;
     }
     switch (className) {
@@ -4380,7 +4420,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
         // equivalent to `new String("5")`.
         result = a == String(b);
         if (!result) {
-          diffBuilder.record(a, b);
+          diffBuilder.recordMismatch();
         }
         return result;
       case '[object Number]':
@@ -4388,7 +4428,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
         // other numeric values.
         result = a != +a ? b != +b : (a === 0 ? 1 / a == 1 / b : a == +b);
         if (!result) {
-          diffBuilder.record(a, b);
+          diffBuilder.recordMismatch();
         }
         return result;
       case '[object Date]':
@@ -4398,7 +4438,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
         // of `NaN` are not equivalent.
         result = +a == +b;
         if (!result) {
-          diffBuilder.record(a, b);
+          diffBuilder.recordMismatch();
         }
         return result;
       // RegExps are compared by their source patterns and flags.
@@ -4409,7 +4449,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
           a.ignoreCase == b.ignoreCase;
     }
     if (typeof a != 'object' || typeof b != 'object') {
-      diffBuilder.record(a, b);
+      diffBuilder.recordMismatch();
       return false;
     }
 
@@ -4419,12 +4459,12 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
       // At first try to use DOM3 method isEqualNode
       result = a.isEqualNode(b);
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
     if (aIsDomNode || bIsDomNode) {
-      diffBuilder.record(a, b);
+      diffBuilder.recordMismatch();
       return false;
     }
 
@@ -4454,7 +4494,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
 
       diffBuilder.withPath('length', function() {
         if (aLength !== bLength) {
-          diffBuilder.record(aLength, bLength);
+          diffBuilder.recordMismatch();
           result = false;
         }
       });
@@ -4462,7 +4502,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
       for (i = 0; i < aLength || i < bLength; i++) {
         diffBuilder.withPath(i, function() {
           if (i >= bLength) {
-            diffBuilder.record(a[i], void 0, actualArrayIsLongerFormatter.bind(null, self.pp));
+            diffBuilder.recordMismatch(actualArrayIsLongerFormatter.bind(null, self.pp));
             result = false;
           } else {
             result = self.eq_(i < aLength ? a[i] : void 0, i < bLength ? b[i] : void 0, aStack, bStack, customTesters, diffBuilder) && result;
@@ -4474,7 +4514,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
       }
     } else if (j$.isMap(a) && j$.isMap(b)) {
       if (a.size != b.size) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
         return false;
       }
 
@@ -4516,12 +4556,12 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
       }
 
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
         return false;
       }
     } else if (j$.isSet(a) && j$.isSet(b)) {
       if (a.size != b.size) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
         return false;
       }
 
@@ -4566,7 +4606,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
       }
 
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
         return false;
       }
     } else {
@@ -4579,7 +4619,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
           a instanceof aCtor && b instanceof bCtor &&
           !(aCtor instanceof aCtor && bCtor instanceof bCtor)) {
 
-        diffBuilder.record(a, b, constructorsAreDifferentFormatter.bind(null, this.pp));
+        diffBuilder.recordMismatch(constructorsAreDifferentFormatter.bind(null, this.pp));
         return false;
       }
     }
@@ -4590,7 +4630,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
 
     // Ensure that both objects contain the same number of properties before comparing deep equality.
     if (keys(b, className == '[object Array]').length !== size) {
-      diffBuilder.record(a, b, objectKeysAreDifferentFormatter.bind(null, this.pp));
+      diffBuilder.recordMismatch(objectKeysAreDifferentFormatter.bind(null, this.pp));
       return false;
     }
 
@@ -4598,7 +4638,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
       key = aKeys[i];
       // Deep compare each member
       if (!j$.util.has(b, key)) {
-        diffBuilder.record(a, b, objectKeysAreDifferentFormatter.bind(null, this.pp));
+        diffBuilder.recordMismatch(objectKeysAreDifferentFormatter.bind(null, this.pp));
         result = false;
         continue;
       }
@@ -4704,12 +4744,75 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
   }
 
   function isDiffBuilder(obj) {
-    return obj && typeof obj.record === 'function';
+    return obj && typeof obj.recordMismatch === 'function';
   }
 
   return MatchersUtil;
 };
 
+getJasmineRequireObj().MismatchTree = function (j$) {
+
+  /*
+    To be able to apply custom object formatters at all possible levels of an
+    object graph, DiffBuilder needs to be able to know not just where the
+    mismatch occurred but also all ancestors of the mismatched value in both
+    the expected and actual object graphs. MismatchTree maintains that context
+    and provides it via the traverse method.
+   */
+  function MismatchTree(path) {
+    this.path = path || new j$.ObjectPath([]);
+    this.formatter = undefined;
+    this.children = [];
+    this.isMismatch = false;
+  }
+
+  MismatchTree.prototype.add = function (path, formatter) {
+    var key, child;
+
+    if (path.depth() === 0) {
+      this.formatter = formatter;
+      this.isMismatch = true;
+    } else {
+      key = path.components[0];
+      path = path.shift();
+      child = this.child(key);
+
+      if (!child) {
+        child = new MismatchTree(this.path.add(key));
+        this.children.push(child);
+      }
+
+      child.add(path, formatter);
+    }
+  };
+
+  MismatchTree.prototype.traverse = function (visit) {
+    var i, hasChildren = this.children.length > 0;
+
+    if (this.isMismatch || hasChildren) {
+      if (visit(this.path, !hasChildren, this.formatter)) {
+        for (i = 0; i < this.children.length; i++) {
+          this.children[i].traverse(visit);
+        }
+      }
+    }
+  };
+
+  MismatchTree.prototype.child = function(key) {
+    var i, pathEls;
+
+    for (i = 0; i < this.children.length; i++) {
+      pathEls = this.children[i].path.components;
+      if (pathEls[pathEls.length - 1] === key) {
+        return this.children[i];
+      }
+    }
+  };
+
+  return MismatchTree;
+};
+
+
 getJasmineRequireObj().nothing = function() {
   /**
    * {@link expect} nothing explicitly.
@@ -4738,7 +4841,8 @@ getJasmineRequireObj().NullDiffBuilder = function(j$) {
       withPath: function(_, block) {
         block();
       },
-      record: function() {}
+      setRoots: function() {},
+      recordMismatch: function() {}
     };
   };
 };
@@ -4756,10 +4860,24 @@ getJasmineRequireObj().ObjectPath = function(j$) {
     }
   };
 
+  ObjectPath.prototype.dereference = function(obj) {
+    var i;
+
+    for (i = 0; i < this.components.length; i++) {
+      obj = obj[this.components[i]];
+    }
+
+    return obj;
+  };
+
   ObjectPath.prototype.add = function(component) {
     return new ObjectPath(this.components.concat([component]));
   };
 
+  ObjectPath.prototype.shift = function() {
+    return new ObjectPath(this.components.slice(1));
+  };
+
   ObjectPath.prototype.depth = function() {
     return this.components.length;
   };
@@ -6109,15 +6227,7 @@ getJasmineRequireObj().makePrettyPrinter = function(j$) {
   };
 
   SinglePrettyPrintRun.prototype.applyCustomFormatters_ = function(value) {
-    var i, result;
-
-    for (i = 0; i < this.customObjectFormatters_.length; i++) {
-      result = this.customObjectFormatters_[i](value);
-
-      if (result !== undefined) {
-        return result;
-      }
-    }
+    return customFormat(value, this.customObjectFormatters_);
   };
 
   SinglePrettyPrintRun.prototype.iterateObject = function(obj, fn) {
@@ -6390,16 +6500,31 @@ getJasmineRequireObj().makePrettyPrinter = function(j$) {
     return extraKeys;
   }
 
+  function customFormat(value, customObjectFormatters) {
+    var i, result;
+
+    for (i = 0; i < customObjectFormatters.length; i++) {
+      result = customObjectFormatters[i](value);
+
+      if (result !== undefined) {
+        return result;
+      }
+    }
+  }
+
   return function(customObjectFormatters) {
+    customObjectFormatters = customObjectFormatters || [];
+
     var pp = function(value) {
-      var prettyPrinter = new SinglePrettyPrintRun(
-        customObjectFormatters || [],
-        pp
-      );
+      var prettyPrinter = new SinglePrettyPrintRun(customObjectFormatters, pp);
       prettyPrinter.format(value);
       return prettyPrinter.stringParts.join('');
     };
 
+    pp.customFormat_ = function(value) {
+      return customFormat(value, customObjectFormatters);
+    };
+
     return pp;
   };
 };
diff --git a/spec/core/PrettyPrintSpec.js b/spec/core/PrettyPrintSpec.js
index 4aafefcd..f12469b7 100644
--- a/spec/core/PrettyPrintSpec.js
+++ b/spec/core/PrettyPrintSpec.js
@@ -505,7 +505,7 @@ describe('PrettyPrinter', function() {
         pp = jasmineUnderTest.makePrettyPrinter(customObjectFormatters),
         obj = { foo: 'bar' };
 
-      expect(pp(obj, customObjectFormatters)).toEqual('2nd: bar');
+      expect(pp(obj)).toEqual('2nd: bar');
     });
 
     it('should fall back to built in logic if all custom object formatters return undefined', function() {
@@ -517,7 +517,39 @@ describe('PrettyPrinter', function() {
         pp = jasmineUnderTest.makePrettyPrinter(customObjectFormatters),
         obj = { foo: 'bar' };
 
-      expect(pp(obj, customObjectFormatters)).toEqual("Object({ foo: 'bar' })");
+      expect(pp(obj)).toEqual("Object({ foo: 'bar' })");
+    });
+  });
+
+  describe('#customFormat_', function() {
+    it('should use the first custom object formatter that does not return undefined', function() {
+      var customObjectFormatters = [
+          function(obj) {
+            return undefined;
+          },
+          function(obj) {
+            return '2nd: ' + obj.foo;
+          },
+          function(obj) {
+            return '3rd: ' + obj.foo;
+          }
+        ],
+        pp = jasmineUnderTest.makePrettyPrinter(customObjectFormatters),
+        obj = { foo: 'bar' };
+
+      expect(pp.customFormat_(obj)).toEqual('2nd: bar');
+    });
+
+    it('should return undefined if all custom object formatters return undefined', function() {
+      var customObjectFormatters = [
+          function(obj) {
+            return undefined;
+          }
+        ],
+        pp = jasmineUnderTest.makePrettyPrinter(customObjectFormatters),
+        obj = { foo: 'bar' };
+
+      expect(pp.customFormat_(obj)).toBeUndefined();
     });
   });
 });
diff --git a/spec/core/matchers/DiffBuilderSpec.js b/spec/core/matchers/DiffBuilderSpec.js
index 3b68207d..6d82c3f8 100644
--- a/spec/core/matchers/DiffBuilderSpec.js
+++ b/spec/core/matchers/DiffBuilderSpec.js
@@ -1,73 +1,136 @@
-describe("DiffBuilder", function() {
-  it("records the actual and expected objects", function() {
+describe("DiffBuilder", function () {
+  it("records the actual and expected objects", function () {
     var diffBuilder = jasmineUnderTest.DiffBuilder();
-    diffBuilder.record({x: 'actual'}, {x: 'expected'});
+    diffBuilder.setRoots({x: 'actual'}, {x: 'expected'});
+    diffBuilder.recordMismatch();
 
     expect(diffBuilder.getMessage()).toEqual("Expected Object({ x: 'actual' }) to equal Object({ x: 'expected' }).");
   });
 
-  it("prints the path at which the difference was found", function() {
+  it("prints the path at which the difference was found", function () {
     var diffBuilder = jasmineUnderTest.DiffBuilder();
+    diffBuilder.setRoots({foo: {x: 'actual'}}, {foo: {x: 'expected'}});
 
-    diffBuilder.withPath('foo', function() {
-      diffBuilder.record({x: 'actual'}, {x: 'expected'});
+    diffBuilder.withPath('foo', function () {
+      diffBuilder.recordMismatch();
     });
 
     expect(diffBuilder.getMessage()).toEqual("Expected $.foo = Object({ x: 'actual' }) to equal Object({ x: 'expected' }).");
   });
 
-  it("prints multiple messages, separated by newlines", function() {
+  it("prints multiple messages, separated by newlines", function () {
     var diffBuilder = jasmineUnderTest.DiffBuilder();
+    diffBuilder.setRoots({foo: 1, bar: 3}, {foo: 2, bar: 4});
 
-    diffBuilder.withPath('foo', function() {
-      diffBuilder.record(1, 2);
+    diffBuilder.withPath('foo', function () {
+      diffBuilder.recordMismatch();
+    });
+    diffBuilder.withPath('bar', function () {
+      diffBuilder.recordMismatch();
     });
 
     var message =
       "Expected $.foo = 1 to equal 2.\n" +
-      "Expected 3 to equal 4.";
+      "Expected $.bar = 3 to equal 4.";
 
-    diffBuilder.record(3, 4);
     expect(diffBuilder.getMessage()).toEqual(message);
   });
 
-  it("allows customization of the message", function() {
+  it("allows customization of the message", function () {
     var diffBuilder = jasmineUnderTest.DiffBuilder();
+    diffBuilder.setRoots({x: 'bar'}, {x: 'foo'});
 
     function darthVaderFormatter(actual, expected, path) {
       return "I find your lack of " + expected + " disturbing. (was " + actual + ", at " + path + ")"
     }
 
-    diffBuilder.withPath('x', function() {
-      diffBuilder.record('bar', 'foo', darthVaderFormatter);
+    diffBuilder.withPath('x', function () {
+      diffBuilder.recordMismatch(darthVaderFormatter);
     });
 
     expect(diffBuilder.getMessage()).toEqual("I find your lack of foo disturbing. (was bar, at $.x)");
   });
 
-  it("uses the injected pretty-printer", function() {
-    var prettyPrinter = function(val) {
+  it("uses the injected pretty-printer", function () {
+    var prettyPrinter = function (val) {
         return '|' + val + '|';
       },
       diffBuilder = jasmineUnderTest.DiffBuilder({prettyPrinter: prettyPrinter});
+    prettyPrinter.customFormat_ = function () {
+    };
 
-    diffBuilder.withPath('foo', function() {
-      diffBuilder.record('actual', 'expected');
+    diffBuilder.setRoots({foo: 'actual'}, {foo: 'expected'});
+    diffBuilder.withPath('foo', function () {
+      diffBuilder.recordMismatch();
     });
 
     expect(diffBuilder.getMessage()).toEqual("Expected $.foo = |actual| to equal |expected|.");
   });
 
-
-  it("passes the injected pretty-printer to the diff formatter", function() {
+  it("passes the injected pretty-printer to the diff formatter", function () {
     var diffFormatter = jasmine.createSpy('diffFormatter'),
-      prettyPrinter = function() {},
+      prettyPrinter = function () {
+      },
       diffBuilder = jasmineUnderTest.DiffBuilder({prettyPrinter: prettyPrinter});
+    prettyPrinter.customFormat_ = function () {
+    };
 
-    diffBuilder.withPath('x', function() {
-      diffBuilder.record('bar', 'foo', diffFormatter);
+    diffBuilder.setRoots({x: 'bar'}, {x: 'foo'});
+    diffBuilder.withPath('x', function () {
+      diffBuilder.recordMismatch(diffFormatter);
     });
 
+    diffBuilder.getMessage();
+
     expect(diffFormatter).toHaveBeenCalledWith('bar', 'foo', jasmine.anything(), prettyPrinter);
   });
+
+  it("uses custom object formatters on leaf nodes", function() {
+    var formatter = function(x) {
+      if (typeof x === 'number') {
+        return '[number:' + x + ']';
+      }
+    };
+    prettyPrinter = jasmineUnderTest.makePrettyPrinter([formatter]);
+    var diffBuilder = new jasmineUnderTest.DiffBuilder({prettyPrinter: prettyPrinter});
+
+    diffBuilder.setRoots(5, 4);
+    diffBuilder.recordMismatch();
+
+    expect(diffBuilder.getMessage()).toEqual('Expected [number:5] to equal [number:4].');
+  });
+
+
+  it("uses custom object formatters on non leaf nodes", function () {
+    var formatter = function (x) {
+      if (x.hasOwnProperty('a')) {
+        return '[thing with a=' + x.a + ', b=' + JSON.stringify(x.b) + ']';
+      }
+    };
+    prettyPrinter = jasmineUnderTest.makePrettyPrinter([formatter]);
+    var diffBuilder = new jasmineUnderTest.DiffBuilder({prettyPrinter: prettyPrinter});
+    var expectedMsg = 'Expected $[0].foo = [thing with a=1, b={"x":42}] to equal [thing with a=1, b={"x":43}].\n' +
+      "Expected $[0].bar = 'yes' to equal 'no'.";
+
+    diffBuilder.setRoots(
+      [{foo: {a: 1, b: {x: 42}}, bar: 'yes'}],
+      [{foo: {a: 1, b: {x: 43}}, bar: 'no'}]
+    );
+
+    diffBuilder.withPath(0, function () {
+      diffBuilder.withPath('foo', function () {
+        diffBuilder.withPath('b', function () {
+          diffBuilder.withPath('x', function () {
+            diffBuilder.recordMismatch();
+          });
+        });
+      });
+
+      diffBuilder.withPath('bar', function () {
+        diffBuilder.recordMismatch();
+      });
+    });
+
+    expect(diffBuilder.getMessage()).toEqual(expectedMsg);
+  });
 });
diff --git a/spec/core/matchers/MismatchTreeSpec.js b/spec/core/matchers/MismatchTreeSpec.js
new file mode 100644
index 00000000..ea053eb7
--- /dev/null
+++ b/spec/core/matchers/MismatchTreeSpec.js
@@ -0,0 +1,136 @@
+describe('MismatchTree', function () {
+  describe('#add', function () {
+    describe('When the path is empty', function () {
+      it('flags the root node as mismatched', function () {
+        var tree = new jasmineUnderTest.MismatchTree();
+        tree.add(new jasmineUnderTest.ObjectPath([]));
+        expect(tree.isMismatch).toBe(true);
+      });
+    });
+
+    describe('When the path is not empty', function () {
+      it('flags the node as mismatched', function () {
+        var tree = new jasmineUnderTest.MismatchTree();
+
+        tree.add(new jasmineUnderTest.ObjectPath(['a', 'b']));
+
+        expect(tree.child('a').child('b').isMismatch).toBe(true);
+      });
+
+      it('does not flag ancestors as mismatched', function () {
+        var tree = new jasmineUnderTest.MismatchTree();
+
+        tree.add(new jasmineUnderTest.ObjectPath(['a', 'b']));
+
+        expect(tree.isMismatch).toBe(false);
+        expect(tree.child('a').isMismatch).toBe(false);
+      });
+    });
+
+    it('stores the formatter on only the target node', function () {
+      var tree = new jasmineUnderTest.MismatchTree();
+
+      tree.add(new jasmineUnderTest.ObjectPath(['a', 'b']), formatter);
+
+      expect(tree.formatter).toBeFalsy();
+      expect(tree.child('a').formatter).toBeFalsy();
+      expect(tree.child('a').child('b').formatter).toBe(formatter);
+    });
+
+    it('stores the path to the node', function () {
+      var tree = new jasmineUnderTest.MismatchTree();
+
+      tree.add(new jasmineUnderTest.ObjectPath(['a', 'b']), formatter);
+
+      expect(tree.child('a').child('b').path.components).toEqual(['a', 'b']);
+    });
+  });
+
+  describe('#traverse', function () {
+    it('calls the callback for all nodes that are or contain mismatches', function () {
+      var tree = new jasmineUnderTest.MismatchTree();
+      tree.add(new jasmineUnderTest.ObjectPath(['a', 'b']), formatter);
+      tree.add(new jasmineUnderTest.ObjectPath(['c']));
+      var visit = jasmine.createSpy('visit').and.returnValue(true);
+
+      tree.traverse(visit);
+
+      expect(visit).toHaveBeenCalledWith(
+        new jasmineUnderTest.ObjectPath([]), false, undefined
+      );
+      expect(visit).toHaveBeenCalledWith(
+        new jasmineUnderTest.ObjectPath(['a']), false, undefined
+      );
+      expect(visit).toHaveBeenCalledWith(
+        new jasmineUnderTest.ObjectPath(['a', 'b']), true, formatter
+      );
+      expect(visit).toHaveBeenCalledWith(
+        new jasmineUnderTest.ObjectPath(['c']), true, undefined
+      );
+    });
+
+    it('does not call the callback if there are no mismatches', function () {
+      var tree = new jasmineUnderTest.MismatchTree();
+      var visit = jasmine.createSpy('visit');
+
+      tree.traverse(visit);
+
+      expect(visit).not.toHaveBeenCalled();
+    });
+
+    it('visits parents before children', function () {
+      var tree = new jasmineUnderTest.MismatchTree();
+      tree.add(new jasmineUnderTest.ObjectPath(['a', 'b']));
+      var visited = [];
+
+      tree.traverse(function (path) {
+        visited.push(path);
+        return true;
+      });
+
+      expect(visited).toEqual([
+        new jasmineUnderTest.ObjectPath([]),
+        new jasmineUnderTest.ObjectPath(['a']),
+        new jasmineUnderTest.ObjectPath(['a', 'b'])
+      ]);
+    });
+
+    it('visits children in the order they were recorded', function() {
+      var tree = new jasmineUnderTest.MismatchTree();
+      tree.add(new jasmineUnderTest.ObjectPath(['length']));
+      tree.add(new jasmineUnderTest.ObjectPath([1]));
+      var visited = [];
+
+      tree.traverse(function (path) {
+        visited.push(path);
+        return true;
+      });
+
+      expect(visited).toEqual([
+        new jasmineUnderTest.ObjectPath([]),
+        new jasmineUnderTest.ObjectPath(['length']),
+        new jasmineUnderTest.ObjectPath([1])
+      ]);
+    });
+
+    it('does not visit children if the callback returns falsy', function() {
+      var tree = new jasmineUnderTest.MismatchTree();
+      tree.add(new jasmineUnderTest.ObjectPath(['a', 'b']));
+      var visited = [];
+
+      tree.traverse(function (path) {
+        visited.push(path);
+        return path.depth() === 0;
+      });
+
+      expect(visited).toEqual([
+        new jasmineUnderTest.ObjectPath([]),
+        new jasmineUnderTest.ObjectPath(['a'])
+      ]);
+    });
+  });
+
+  function formatter() {
+  }
+
+});
diff --git a/spec/core/matchers/NullDiffBuilderSpec.js b/spec/core/matchers/NullDiffBuilderSpec.js
index a9aac3db..3333776b 100644
--- a/spec/core/matchers/NullDiffBuilderSpec.js
+++ b/spec/core/matchers/NullDiffBuilderSpec.js
@@ -1,13 +1,8 @@
-describe('NullDiffBuilder', function() {
-  it('responds to withPath() by calling the passed function', function() {
+describe('NullDiffBuilder', function () {
+  it('responds to withPath() by calling the passed function', function () {
     var spy = jasmine.createSpy('callback');
     jasmineUnderTest.NullDiffBuilder().withPath('does not matter', spy);
     expect(spy).toHaveBeenCalled();
   });
 
-  it('responds to record()', function() {
-    expect(function() {
-      jasmineUnderTest.NullDiffBuilder().record('does not matter');
-    }).not.toThrow();
-  })
 });
diff --git a/spec/core/matchers/ObjectPathSpec.js b/spec/core/matchers/ObjectPathSpec.js
index 88b023d1..9750272e 100644
--- a/spec/core/matchers/ObjectPathSpec.js
+++ b/spec/core/matchers/ObjectPathSpec.js
@@ -39,5 +39,13 @@ describe('ObjectPath', function() {
 
     expect(path.toString()).toEqual('$.foo');
     expect(root.toString()).toEqual('');
-  })
+  });
+
+  describe('#dereference', function() {
+    it('returns the value corresponding to the path', function () {
+      var path = new ObjectPath().add('foo').add(1).add('bar');
+      var obj = {foo: ['', {bar: 42}]};
+      expect(path.dereference(obj)).toEqual(42);
+    });
+  });
 });
diff --git a/spec/core/matchers/matchersUtilSpec.js b/spec/core/matchers/matchersUtilSpec.js
index 1c0903ba..48f4781a 100644
--- a/spec/core/matchers/matchersUtilSpec.js
+++ b/spec/core/matchers/matchersUtilSpec.js
@@ -730,26 +730,26 @@ describe("matchersUtil", function() {
       var diffBuilder = new jasmineUnderTest.DiffBuilder(),
         matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-      spyOn(diffBuilder, 'record');
+      spyOn(diffBuilder, 'recordMismatch');
       spyOn(diffBuilder, 'withPath').and.callThrough();
 
       matchersUtil.equals([1], [2], [], diffBuilder);
       expect(diffBuilder.withPath).toHaveBeenCalledWith('length', jasmine.any(Function));
       expect(diffBuilder.withPath).toHaveBeenCalledWith(0, jasmine.any(Function));
-      expect(diffBuilder.record).toHaveBeenCalledWith(1, 2);
+      expect(diffBuilder.recordMismatch).toHaveBeenCalledWith();
     });
 
     it('uses a diffBuilder if one is provided as the third argument', function() {
       var diffBuilder = new jasmineUnderTest.DiffBuilder(),
         matchersUtil = new jasmineUnderTest.MatchersUtil();
 
-      spyOn(diffBuilder, 'record');
+      spyOn(diffBuilder, 'recordMismatch');
       spyOn(diffBuilder, 'withPath').and.callThrough();
 
       matchersUtil.equals([1], [2], diffBuilder);
       expect(diffBuilder.withPath).toHaveBeenCalledWith('length', jasmine.any(Function));
       expect(diffBuilder.withPath).toHaveBeenCalledWith(0, jasmine.any(Function));
-      expect(diffBuilder.record).toHaveBeenCalledWith(1, 2);
+      expect(diffBuilder.recordMismatch).toHaveBeenCalled();
     });
   });
 
diff --git a/spec/core/matchers/toEqualSpec.js b/spec/core/matchers/toEqualSpec.js
index 5bfc7715..78b40ef0 100644
--- a/spec/core/matchers/toEqualSpec.js
+++ b/spec/core/matchers/toEqualSpec.js
@@ -97,8 +97,12 @@ describe("toEqual", function() {
     expect(compareEquals(actual, expected).message).toEqual(message);
   });
 
-  it("uses custom object formatters to pretty-print properties", function() {
-    function formatter(x) { return '|' + x + '|'; }
+  it("uses custom object formatters to pretty-print simple properties", function() {
+    function formatter(x) {
+      if (typeof x === 'number') {
+        return '|' + x + '|';
+      }
+    }
 
     var actual = {x: {y: 1, z: 2, f: 4}},
       expected = {x: {y: 1, z: 2, g: 3}},
@@ -114,8 +118,12 @@ describe("toEqual", function() {
     expect(matcher.compare(actual, expected).message).toEqual(message);
   });
 
-  it("uses custom object formatters to build diffs", function() {
-    function formatter(x) { return '|' + x + '|'; }
+  it("uses custom object formatters to show simple values in diffs", function() {
+    function formatter(x) {
+      if (typeof x === 'number') {
+        return '|' + x + '|';
+      }
+    }
 
     var actual = [{foo: 4}],
       expected = [{foo: 5}],
@@ -127,6 +135,30 @@ describe("toEqual", function() {
     expect(matcher.compare(actual, expected).message).toEqual(message);
   });
 
+  it("uses custom object formatters to show more complex objects diffs", function() {
+    function formatter(x) {
+      if (x.hasOwnProperty('a')) {
+        return '[thing with a=' + x.a + ', b=' + x.b + ']';
+      }
+    }
+
+    var actual = [{
+        foo: {a: 1, b: 2},
+        bar: 'should not be pretty printed'
+      }],
+      expected = [{
+        foo: {a: 5, b: 2},
+        bar: "shouldn't be pretty printed"
+      }],
+      prettyPrinter = jasmineUnderTest.makePrettyPrinter([formatter]),
+      util = new jasmineUnderTest.MatchersUtil({pp: prettyPrinter}),
+      matcher = jasmineUnderTest.matchers.toEqual(util),
+      message = "Expected $[0].foo = [thing with a=1, b=2] to equal [thing with a=5, b=2].\n" +
+        "Expected $[0].bar = 'should not be pretty printed' to equal 'shouldn't be pretty printed'.";
+
+    expect(matcher.compare(actual, expected).message).toEqual(message);
+  });
+
   it("reports extra and missing properties of the root-level object", function() {
     var actual = {x: 1},
       expected = {a: 1},
@@ -303,10 +335,14 @@ describe("toEqual", function() {
     expect(compareEquals(actual, expected).message).toEqual(message);
   });
 
-  it("uses custom object formatters to report objects with different constructors", function () {
+  it("uses custom object formatters for the value but not the type when reporting objects with different constructors", function () {
     function Foo() {}
     function Bar() {}
-    function formatter(x) { return '|' + x + '|'; }
+    function formatter(x) {
+      if (x instanceof Foo || x instanceof Bar) {
+        return '|' + x + '|';
+      }
+    }
 
     var actual = {x: new Foo()},
       expected = {x: new Bar()},
@@ -329,6 +365,11 @@ describe("toEqual", function() {
     expect(compareEquals(actual, expected).message).toEqual(message);
   });
 
+  it("reports value mismatches at the root level", function() {
+    expect(compareEquals(1, 2).message).toEqual("Expected 1 to equal 2.");
+  });
+
+
   it("reports mismatches between objects with their own constructor property", function () {
     function Foo() {}
     function Bar() {}
@@ -839,7 +880,11 @@ describe("toEqual", function() {
     });
 
     it("uses custom object formatters when the actual array is longer", function() {
-      function formatter(x) { return '|' + x + '|'; }
+      function formatter(x) {
+        if (typeof x === 'number') {
+          return '|' + x + '|';
+        }
+      }
 
       var actual = [1, 1, 2, 3, 5],
         expected = [1, 1, 2, 3],
diff --git a/src/core/PrettyPrinter.js b/src/core/PrettyPrinter.js
index a15177ce..5faa3bbf 100644
--- a/src/core/PrettyPrinter.js
+++ b/src/core/PrettyPrinter.js
@@ -102,15 +102,7 @@ getJasmineRequireObj().makePrettyPrinter = function(j$) {
   };
 
   SinglePrettyPrintRun.prototype.applyCustomFormatters_ = function(value) {
-    var i, result;
-
-    for (i = 0; i < this.customObjectFormatters_.length; i++) {
-      result = this.customObjectFormatters_[i](value);
-
-      if (result !== undefined) {
-        return result;
-      }
-    }
+    return customFormat(value, this.customObjectFormatters_);
   };
 
   SinglePrettyPrintRun.prototype.iterateObject = function(obj, fn) {
@@ -383,16 +375,31 @@ getJasmineRequireObj().makePrettyPrinter = function(j$) {
     return extraKeys;
   }
 
+  function customFormat(value, customObjectFormatters) {
+    var i, result;
+
+    for (i = 0; i < customObjectFormatters.length; i++) {
+      result = customObjectFormatters[i](value);
+
+      if (result !== undefined) {
+        return result;
+      }
+    }
+  }
+
   return function(customObjectFormatters) {
+    customObjectFormatters = customObjectFormatters || [];
+
     var pp = function(value) {
-      var prettyPrinter = new SinglePrettyPrintRun(
-        customObjectFormatters || [],
-        pp
-      );
+      var prettyPrinter = new SinglePrettyPrintRun(customObjectFormatters, pp);
       prettyPrinter.format(value);
       return prettyPrinter.stringParts.join('');
     };
 
+    pp.customFormat_ = function(value) {
+      return customFormat(value, customObjectFormatters);
+    };
+
     return pp;
   };
 };
diff --git a/src/core/matchers/DiffBuilder.js b/src/core/matchers/DiffBuilder.js
index f5517e17..197e4c71 100644
--- a/src/core/matchers/DiffBuilder.js
+++ b/src/core/matchers/DiffBuilder.js
@@ -1,17 +1,51 @@
-getJasmineRequireObj().DiffBuilder = function(j$) {
+getJasmineRequireObj().DiffBuilder = function (j$) {
   return function DiffBuilder(config) {
-    var path = new j$.ObjectPath(),
-        mismatches = [],
-        prettyPrinter = (config || {}).prettyPrinter || j$.makePrettyPrinter();
+    var prettyPrinter = (config || {}).prettyPrinter || j$.makePrettyPrinter(),
+      mismatches = new j$.MismatchTree(),
+      path = new j$.ObjectPath(),
+      actualRoot = undefined,
+      expectedRoot = undefined;
 
     return {
-      record: function (actual, expected, formatter) {
-        formatter = formatter || defaultFormatter;
-        mismatches.push(formatter(actual, expected, path, prettyPrinter));
+      setRoots: function (actual, expected) {
+        actualRoot = actual;
+        expectedRoot = expected;
+      },
+
+      recordMismatch: function (formatter) {
+        mismatches.add(path, formatter);
       },
 
       getMessage: function () {
-        return mismatches.join('\n');
+        var messages = [];
+
+        mismatches.traverse(function (path, isLeaf, formatter) {
+          var actualCustom, expectedCustom, useCustom,
+            actual = path.dereference(actualRoot),
+            expected = path.dereference(expectedRoot);
+
+          if (formatter) {
+            messages.push(formatter(actual, expected, path, prettyPrinter));
+            return true;
+          }
+
+          actualCustom = prettyPrinter.customFormat_(actual);
+          expectedCustom = prettyPrinter.customFormat_(expected);
+          useCustom = !(j$.util.isUndefined(actualCustom) && j$.util.isUndefined(expectedCustom));
+
+          if (useCustom) {
+            messages.push(wrapPrettyPrinted(actualCustom, expectedCustom, path));
+            return false; // don't recurse further
+          }
+
+          if (isLeaf) {
+            messages.push(defaultFormatter(actual, expected, path, prettyPrinter));
+          }
+
+          return true;
+        });
+
+        return messages.join('\n');
       },
 
       withPath: function (pathComponent, block) {
@@ -22,12 +56,16 @@ getJasmineRequireObj().DiffBuilder = function(j$) {
       }
     };
 
-    function defaultFormatter (actual, expected, path, prettyPrinter) {
+    function defaultFormatter(actual, expected, path, prettyPrinter) {
+      return wrapPrettyPrinted(prettyPrinter(actual), prettyPrinter(expected), path);
+    }
+
+    function wrapPrettyPrinted(actual, expected, path) {
       return 'Expected ' +
         path + (path.depth() ? ' = ' : '') +
-        prettyPrinter(actual) +
+        actual +
         ' to equal ' +
-        prettyPrinter(expected) +
+        expected +
         '.';
     }
   };
diff --git a/src/core/matchers/MismatchTree.js b/src/core/matchers/MismatchTree.js
new file mode 100644
index 00000000..1ce356de
--- /dev/null
+++ b/src/core/matchers/MismatchTree.js
@@ -0,0 +1,62 @@
+getJasmineRequireObj().MismatchTree = function (j$) {
+
+  /*
+    To be able to apply custom object formatters at all possible levels of an
+    object graph, DiffBuilder needs to be able to know not just where the
+    mismatch occurred but also all ancestors of the mismatched value in both
+    the expected and actual object graphs. MismatchTree maintains that context
+    and provides it via the traverse method.
+   */
+  function MismatchTree(path) {
+    this.path = path || new j$.ObjectPath([]);
+    this.formatter = undefined;
+    this.children = [];
+    this.isMismatch = false;
+  }
+
+  MismatchTree.prototype.add = function (path, formatter) {
+    var key, child;
+
+    if (path.depth() === 0) {
+      this.formatter = formatter;
+      this.isMismatch = true;
+    } else {
+      key = path.components[0];
+      path = path.shift();
+      child = this.child(key);
+
+      if (!child) {
+        child = new MismatchTree(this.path.add(key));
+        this.children.push(child);
+      }
+
+      child.add(path, formatter);
+    }
+  };
+
+  MismatchTree.prototype.traverse = function (visit) {
+    var i, hasChildren = this.children.length > 0;
+
+    if (this.isMismatch || hasChildren) {
+      if (visit(this.path, !hasChildren, this.formatter)) {
+        for (i = 0; i < this.children.length; i++) {
+          this.children[i].traverse(visit);
+        }
+      }
+    }
+  };
+
+  MismatchTree.prototype.child = function(key) {
+    var i, pathEls;
+
+    for (i = 0; i < this.children.length; i++) {
+      pathEls = this.children[i].path.components;
+      if (pathEls[pathEls.length - 1] === key) {
+        return this.children[i];
+      }
+    }
+  };
+
+  return MismatchTree;
+};
+
diff --git a/src/core/matchers/NullDiffBuilder.js b/src/core/matchers/NullDiffBuilder.js
index de7d3464..cb6672e4 100644
--- a/src/core/matchers/NullDiffBuilder.js
+++ b/src/core/matchers/NullDiffBuilder.js
@@ -4,7 +4,8 @@ getJasmineRequireObj().NullDiffBuilder = function(j$) {
       withPath: function(_, block) {
         block();
       },
-      record: function() {}
+      setRoots: function() {},
+      recordMismatch: function() {}
     };
   };
 };
diff --git a/src/core/matchers/ObjectPath.js b/src/core/matchers/ObjectPath.js
index cd1629e2..266e8e62 100644
--- a/src/core/matchers/ObjectPath.js
+++ b/src/core/matchers/ObjectPath.js
@@ -11,10 +11,24 @@ getJasmineRequireObj().ObjectPath = function(j$) {
     }
   };
 
+  ObjectPath.prototype.dereference = function(obj) {
+    var i;
+
+    for (i = 0; i < this.components.length; i++) {
+      obj = obj[this.components[i]];
+    }
+
+    return obj;
+  };
+
   ObjectPath.prototype.add = function(component) {
     return new ObjectPath(this.components.concat([component]));
   };
 
+  ObjectPath.prototype.shift = function() {
+    return new ObjectPath(this.components.slice(1));
+  };
+
   ObjectPath.prototype.depth = function() {
     return this.components.length;
   };
diff --git a/src/core/matchers/matchersUtil.js b/src/core/matchers/matchersUtil.js
index f38b9185..bd7664a0 100644
--- a/src/core/matchers/matchersUtil.js
+++ b/src/core/matchers/matchersUtil.js
@@ -69,7 +69,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
     if (asymmetricA) {
       result = a.asymmetricMatch(b, shim);
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
@@ -77,7 +77,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
     if (asymmetricB) {
       result = b.asymmetricMatch(a, shim);
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
@@ -95,6 +95,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
 
     customTesters = customTesters || this.customTesters_;
     diffBuilder = diffBuilder || j$.NullDiffBuilder();
+    diffBuilder.setRoots(a, b);
 
     return this.eq_(a, b, [], [], customTesters, diffBuilder);
   };
@@ -113,7 +114,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
       var customTesterResult = customTesters[i](a, b);
       if (!j$.util.isUndefined(customTesterResult)) {
         if (!customTesterResult) {
-          diffBuilder.record(a, b);
+          diffBuilder.recordMismatch();
         }
         return customTesterResult;
       }
@@ -122,7 +123,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
     if (a instanceof Error && b instanceof Error) {
       result = a.message == b.message;
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
@@ -132,7 +133,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
     if (a === b) {
       result = a !== 0 || 1 / a == 1 / b;
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
@@ -140,13 +141,13 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
     if (a === null || b === null) {
       result = a === b;
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
     var className = Object.prototype.toString.call(a);
     if (className != Object.prototype.toString.call(b)) {
-      diffBuilder.record(a, b);
+      diffBuilder.recordMismatch();
       return false;
     }
     switch (className) {
@@ -156,7 +157,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
         // equivalent to `new String("5")`.
         result = a == String(b);
         if (!result) {
-          diffBuilder.record(a, b);
+          diffBuilder.recordMismatch();
         }
         return result;
       case '[object Number]':
@@ -164,7 +165,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
         // other numeric values.
         result = a != +a ? b != +b : (a === 0 ? 1 / a == 1 / b : a == +b);
         if (!result) {
-          diffBuilder.record(a, b);
+          diffBuilder.recordMismatch();
         }
         return result;
       case '[object Date]':
@@ -174,7 +175,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
         // of `NaN` are not equivalent.
         result = +a == +b;
         if (!result) {
-          diffBuilder.record(a, b);
+          diffBuilder.recordMismatch();
         }
         return result;
       // RegExps are compared by their source patterns and flags.
@@ -185,7 +186,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
           a.ignoreCase == b.ignoreCase;
     }
     if (typeof a != 'object' || typeof b != 'object') {
-      diffBuilder.record(a, b);
+      diffBuilder.recordMismatch();
       return false;
     }
 
@@ -195,12 +196,12 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
       // At first try to use DOM3 method isEqualNode
       result = a.isEqualNode(b);
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
       }
       return result;
     }
     if (aIsDomNode || bIsDomNode) {
-      diffBuilder.record(a, b);
+      diffBuilder.recordMismatch();
       return false;
     }
 
@@ -230,7 +231,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
 
       diffBuilder.withPath('length', function() {
         if (aLength !== bLength) {
-          diffBuilder.record(aLength, bLength);
+          diffBuilder.recordMismatch();
           result = false;
         }
       });
@@ -238,7 +239,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
       for (i = 0; i < aLength || i < bLength; i++) {
         diffBuilder.withPath(i, function() {
           if (i >= bLength) {
-            diffBuilder.record(a[i], void 0, actualArrayIsLongerFormatter.bind(null, self.pp));
+            diffBuilder.recordMismatch(actualArrayIsLongerFormatter.bind(null, self.pp));
             result = false;
           } else {
             result = self.eq_(i < aLength ? a[i] : void 0, i < bLength ? b[i] : void 0, aStack, bStack, customTesters, diffBuilder) && result;
@@ -250,7 +251,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
       }
     } else if (j$.isMap(a) && j$.isMap(b)) {
       if (a.size != b.size) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
         return false;
       }
 
@@ -292,12 +293,12 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
       }
 
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
         return false;
       }
     } else if (j$.isSet(a) && j$.isSet(b)) {
       if (a.size != b.size) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
         return false;
       }
 
@@ -342,7 +343,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
       }
 
       if (!result) {
-        diffBuilder.record(a, b);
+        diffBuilder.recordMismatch();
         return false;
       }
     } else {
@@ -355,7 +356,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
           a instanceof aCtor && b instanceof bCtor &&
           !(aCtor instanceof aCtor && bCtor instanceof bCtor)) {
 
-        diffBuilder.record(a, b, constructorsAreDifferentFormatter.bind(null, this.pp));
+        diffBuilder.recordMismatch(constructorsAreDifferentFormatter.bind(null, this.pp));
         return false;
       }
     }
@@ -366,7 +367,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
 
     // Ensure that both objects contain the same number of properties before comparing deep equality.
     if (keys(b, className == '[object Array]').length !== size) {
-      diffBuilder.record(a, b, objectKeysAreDifferentFormatter.bind(null, this.pp));
+      diffBuilder.recordMismatch(objectKeysAreDifferentFormatter.bind(null, this.pp));
       return false;
     }
 
@@ -374,7 +375,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
       key = aKeys[i];
       // Deep compare each member
       if (!j$.util.has(b, key)) {
-        diffBuilder.record(a, b, objectKeysAreDifferentFormatter.bind(null, this.pp));
+        diffBuilder.recordMismatch(objectKeysAreDifferentFormatter.bind(null, this.pp));
         result = false;
         continue;
       }
@@ -480,7 +481,7 @@ getJasmineRequireObj().MatchersUtil = function(j$) {
   }
 
   function isDiffBuilder(obj) {
-    return obj && typeof obj.record === 'function';
+    return obj && typeof obj.recordMismatch === 'function';
   }
 
   return MatchersUtil;
diff --git a/src/core/requireCore.js b/src/core/requireCore.js
index a21044ff..0a30f424 100644
--- a/src/core/requireCore.js
+++ b/src/core/requireCore.js
@@ -84,6 +84,7 @@ var getJasmineRequireObj = (function(jasmineGlobal) {
     j$.DiffBuilder = jRequire.DiffBuilder(j$);
     j$.NullDiffBuilder = jRequire.NullDiffBuilder(j$);
     j$.ObjectPath = jRequire.ObjectPath(j$);
+    j$.MismatchTree = jRequire.MismatchTree(j$);
     j$.GlobalErrors = jRequire.GlobalErrors(j$);
 
     j$.Truthy = jRequire.Truthy(j$);