See https://github.com/nodejs/io.js/issues/1271#issuecomment-124275467

errors.log

Jeremiahs-MacBook-Pro:io.js Jeremiah$ make test
/Applications/Xcode.app/Contents/Developer/usr/bin/make -C out BUILDTYPE=Release V=1
make[1]: Nothing to be done for `all'.
ln -fs out/Release/iojs iojs
Running main() from gtest_main.cc
[==========] Running 1 test from 1 test case.
[----------] Global test environment set-up.
[----------] 1 test from UtilTest
[ RUN      ] UtilTest.ListHead
[       OK ] UtilTest.ListHead (0 ms)
[----------] 1 test from UtilTest (0 ms total)

[----------] Global test environment tear-down
[==========] 1 test from 1 test case ran. (0 ms total)
[  PASSED  ] 1 test.
/usr/local/opt/python/bin/python2.7 tools/test.py --mode=release message parallel sequential -J
=== release test-domain-abort-on-uncaught ===                                  
Path: parallel/test-domain-abort-on-uncaught
assert.js:89
  throw new assert.AssertionError({
        ^
AssertionError: 4 == 5
    at process.<anonymous> (/Users/Jeremiah/Documents/io.js/test/parallel/test-domain-abort-on-uncaught.js:19:10)
    at emitOne (events.js:82:20)
    at process.emit (events.js:169:7)
Command: out/Release/iojs --abort_on_uncaught_exception /Users/Jeremiah/Documents/io.js/test/parallel/test-domain-abort-on-uncaught.js
=== release test-domain ===                           
Path: parallel/test-domain
caught emitted
caught bound
caught nextTick execution loop
caught ENOENT: no such file or directory, open 'this file does not exist'
caught ENOENT: no such file or directory, open 'stream for nonexistent file'
caught implicit
caught Cannot read property 'isDirectory' of undefined
exit 12 14
caught caught the expected number of errors
unexpected error, throwing "caught the expected number of errors" { [AssertionError: caught the expected number of errors]
  name: 'AssertionError',
  actual: 12,
  expected: 14,
  operator: '==',
  message: 'caught the expected number of errors',
  generatedMessage: false,
  domain: 
   { domain: null,
     _events: { error: [Function] },
     _eventsCount: 1,
     _maxListeners: undefined,
     members: [ [Object], [Object] ] },
  domainThrown: true }
caught caught the expected number of errors
unexpected error, throwing "caught the expected number of errors" { [AssertionError: caught the expected number of errors]
  name: 'AssertionError',
  actual: 12,
  expected: 14,
  operator: '==',
  message: 'caught the expected number of errors',
  generatedMessage: false,
  domain: 
   { domain: null,
     _events: { error: [Function] },
     _eventsCount: 1,
     _maxListeners: undefined,
     members: [ [Object], [Object] ] },
  domainThrown: true }

assert.js:89
  throw new assert.AssertionError({
        ^
AssertionError: caught the expected number of errors
    at process.<anonymous> (/Users/Jeremiah/Documents/io.js/test/parallel/test-domain.js:110:10)
    at emitOne (events.js:82:20)
    at process.emit (events.js:169:7)
Command: out/Release/iojs /Users/Jeremiah/Documents/io.js/test/parallel/test-domain.js
=== release test-domain-exit-dispose ===                    
Path: parallel/test-domain-exit-dispose
0 null
1 null
2 null
3 { domain: null,
  _events: { error: [Function: handle] },
  _eventsCount: 1,
  _maxListeners: undefined,
  members: [] }
4 { domain: null,
  _events: { error: [Function: handle] },
  _eventsCount: 1,
  _maxListeners: undefined,
  members: [] }
5 { domain: null,
  _events: { error: [Function: handle] },
  _eventsCount: 1,
  _maxListeners: undefined,
  members: [] }
6 { domain: null,
  _events: { error: [Function: handle] },
  _eventsCount: 1,
  _maxListeners: undefined,
  members: [] }
7 { domain: null,
  _events: { error: [Function: handle] },
  _eventsCount: 1,
  _maxListeners: undefined,
  members: [] }
8 { domain: null,
  _events: { error: [Function: handle] },
  _eventsCount: 1,
  _maxListeners: undefined,
  members: [] }
9 { domain: null,
  _events: { error: [Function: handle] },
  _eventsCount: 1,
  _maxListeners: undefined,
  members: [] }
This should not happen.
undefined
{ [AssertionError: true == false]
  name: 'AssertionError',
  actual: true,
  expected: false,
  operator: '==',
  message: 'true == false',
  generatedMessage: true,
  domain: 
   { domain: null,
     _events: { error: [Function: handle] },
     _eventsCount: 1,
     _maxListeners: undefined,
     members: [],
     _disposed: true },
  domainThrown: true }
in handler { domain: null,
  _events: { error: [Function: handle] },
  _eventsCount: 1,
  _maxListeners: undefined,
  members: [],
  _disposed: true } true
Command: out/Release/iojs /Users/Jeremiah/Documents/io.js/test/parallel/test-domain-exit-dispose.js
=== release test-domain-exit-dispose-again ===                      
Path: parallel/test-domain-exit-dispose-again
0 null
1 null
2 null
In second timer
3 { domain: null,
  _events: { error: [Function: handle] },
  _eventsCount: 1,
  _maxListeners: undefined,
  members: [] }
4 { domain: null,
  _events: { error: [Function: handle] },
  _eventsCount: 1,
  _maxListeners: undefined,
  members: [] }
5 { domain: null,
  _events: { error: [Function: handle] },
  _eventsCount: 1,
  _maxListeners: undefined,
  members: [] }
6 { domain: null,
  _events: { error: [Function: handle] },
  _eventsCount: 1,
  _maxListeners: undefined,
  members: [] }
7 { domain: null,
  _events: { error: [Function: handle] },
  _eventsCount: 1,
  _maxListeners: undefined,
  members: [] }
8 { domain: null,
  _events: { error: [Function: handle] },
  _eventsCount: 1,
  _maxListeners: undefined,
  members: [] }
9 { domain: null,
  _events: { error: [Function: handle] },
  _eventsCount: 1,
  _maxListeners: undefined,
  members: [] }
This should not happen.
undefined
{ [AssertionError: true == false]
  name: 'AssertionError',
  actual: true,
  expected: false,
  operator: '==',
  message: 'true == false',
  generatedMessage: true,
  domain: 
   { domain: null,
     _events: { error: [Function: handle] },
     _eventsCount: 1,
     _maxListeners: undefined,
     members: [],
     _disposed: true },
  domainThrown: true }
in handler { domain: null,
  _events: { error: [Function: handle] },
  _eventsCount: 1,
  _maxListeners: undefined,
  members: [],
  _disposed: true } true
Command: out/Release/iojs /Users/Jeremiah/Documents/io.js/test/parallel/test-domain-exit-dispose-again.js
=== release test-exception-handler ===                                         
Path: parallel/test-exception-handler
exit
uncaught exception! 1
assert.js:89
  throw new assert.AssertionError({
        ^
AssertionError: 'catch me if you can' == 'true == false'
    at process.<anonymous> (/Users/Jeremiah/Documents/io.js/test/parallel/test-exception-handler.js:10:10)
    at emitOne (events.js:82:20)
    at process.emit (events.js:169:7)
    at process._fatalException (node.js:211:26)
Command: out/Release/iojs /Users/Jeremiah/Documents/io.js/test/parallel/test-exception-handler.js
=== release test-repl-timeout-throw ===                                        
Path: parallel/test-repl-timeout-throw
> ''
> THROW 0
undefined
> THROW 1
ReferenceError: XXX is not defined
    at thrower (repl:1:116)
    at FSReqWrap.readFileAfterClose [as oncomplete] (fs.js:380:3)
> ... ... ... ..... ..... ....... ....... ..... ... ''
> THROW 2
3
var throws = 0;process.on("exit",function(){console.log(throws)});function thrower(){console.log("THROW",throws++);XXX};setTimeout(thrower);""
fs.readFile("/Users/Jeremiah/Documents/io.js/test/parallel/test-repl-timeout-throw.js", thrower);
setTimeout(function() {
  var events = require("events");
  var e = new events.EventEmitter;
  process.nextTick(function() {
    e.on("x", thrower);
    setTimeout(function() {
      e.emit("x");
    });
  });
});"";

assert.js:89
  throw new assert.AssertionError({
        ^
AssertionError: '3' == '> 3'
    at ChildProcess.<anonymous> (/Users/Jeremiah/Documents/io.js/test/parallel/test-repl-timeout-throw.js:58:10)
    at emitTwo (events.js:87:13)
    at ChildProcess.emit (events.js:172:7)
    at maybeClose (internal/child_process.js:764:16)
    at Process.ChildProcess._handle.onexit (internal/child_process.js:211:5)
Command: out/Release/iojs /Users/Jeremiah/Documents/io.js/test/parallel/test-repl-timeout-throw.js
=== release test-timers-uncaught-exception ===                                 
Path: parallel/test-timers-uncaught-exception
set first timer
set second timer
first timer
second timer

assert.js:89
  throw new assert.AssertionError({
        ^
AssertionError: 0 == 1
    at process.<anonymous> (/Users/Jeremiah/Documents/io.js/test/parallel/test-timers-uncaught-exception.js:37:10)
    at emitOne (events.js:82:20)
    at process.emit (events.js:169:7)
Command: out/Release/iojs /Users/Jeremiah/Documents/io.js/test/parallel/test-timers-uncaught-exception.js
[00:48|%  91|+ 809|-   7]: release timeout_throw length differs.               
expect=6
actual=0
patterns:
pattern = ^.*test.*message.*timeout\_throw\.js\:.*$
pattern = ^\ \ undefined\_reference\_error\_maker\;$
pattern = ^\ \ \^$
pattern = ^ReferenceError\:\ undefined\_reference\_error\_maker\ is\ not\ defined$
pattern = ^\ \ \ \ at\ null\.\_onTimeout\ \(.*test.*message.*timeout\_throw\.js\:.*\:.*\)$
pattern = ^\ \ \ \ at\ Timer\.listOnTimeout\ \(timers\.js\:.*\:.*\)$
outlines:
=== release timeout_throw ===                   
Path: message/timeout_throw
Command: out/Release/iojs /Users/Jeremiah/Documents/io.js/test/message/timeout_throw.js
[01:13|% 100|+ 880|-   8]: Done                                                
make: *** [test] Error 1