Running webkit tests with -1 makes editing/mac/pasteboard/5583362.html timeout, because of this: 2015-08-04 18:30:28.030 DumpRenderTree[6994:656531] -[WebUndefined length]: unrecognized selector sent to instance 0x7f9f7a4334e0 2015-08-04 18:30:28.047 DumpRenderTree[6994:656531] An uncaught exception was raised 2015-08-04 18:30:28.047 DumpRenderTree[6994:656531] -[WebUndefined length]: unrecognized selector sent to instance 0x7f9f7a4334e0 2015-08-04 18:30:28.047 DumpRenderTree[6994:656531] ( 0 CoreFoundation 0x00007fff8fb7c7cc __exceptionPreprocess + 172 1 libobjc.A.dylib 0x00007fff93653810 objc_exception_throw + 48 2 CoreFoundation 0x00007fff8fb7f88d -[NSObject(NSObject) doesNotRecognizeSelector:] + 205 3 CoreFoundation 0x00007fff8fab8e61 ___forwarding___ + 1009 4 CoreFoundation 0x00007fff8fab89e8 _CF_forwarding_prep_0 + 120 5 CoreFoundation 0x00007fff8fb05aac CFPasteboardCreateStringFromData + 28 6 AppKit 0x00007fff87ba8281 +[NSPasteboard _convertDataToString:] + 25 7 WebCore 0x00000001055189a4 _ZN7WebCore18PlatformPasteboard13stringForTypeERKN3WTF6StringE + 180 8 WebKitLegacy 0x000000010713886d _ZThn56_N21WebPlatformStrategies13stringForTypeERKN3WTF6StringES3_ + 45 9 WebCore 0x00000001054ff60d _ZN7WebCore10Pasteboard4readERNS_26PasteboardWebContentReaderE + 4173 10 WebCore 0x0000000104d89d16 _ZN7WebCore6Editor19pasteWithPasteboardEPNS_10PasteboardEbNS_22MailBlockquoteHandlingE + 198 11 WebCore 0x0000000104d7a369 _ZN7WebCore6Editor5pasteERNS_10PasteboardE + 169 12 WebCore 0x0000000104d7a27e _ZN7WebCore6Editor5pasteEv + 30 13 WebCore 0x0000000104d87c9e _ZN7WebCoreL12executePasteERNS_5FrameEPNS_5EventENS_19EditorCommandSourceERKN3WTF6StringE + 30 14 WebCore 0x0000000104d852f6 _ZNK7WebCore6Editor7Command7executeERKN3WTF6StringEPNS_5EventE + 182 15 WebCore 0x0000000104cc8eb6 _ZN7WebCore8Document11execCommandERKN3WTF6StringEbS4_ + 214 16 WebCore 0x00000001050f1d04 _ZN7WebCore38jsDocumentPrototypeFunctionExecCommandEPN3JSC9ExecStateE + 420 17 ??? 0x0000598889401028 0x0 + 98442953101352 18 JavaScriptCore 0x00000001039d5823 llint_entry + 22730 19 JavaScriptCore 0x00000001039d5823 llint_entry + 22730 20 JavaScriptCore 0x00000001039cfd49 vmEntryToJavaScript + 326 21 JavaScriptCore 0x0000000103898919 _ZN3JSC7JITCode7executeEPNS_2VMEPNS_14ProtoCallFrameE + 169 22 JavaScriptCore 0x000000010387f414 _ZN3JSC11Interpreter7executeEPNS_17ProgramExecutableEPNS_9ExecStateEPNS_8JSObjectE + 10436 23 JavaScriptCore 0x00000001035a1565 _ZN3JSC8evaluateEPNS_9ExecStateERKNS_10SourceCodeENS_7JSValueERN3WTF8NakedPtrINS_9ExceptionEEE + 469 24 WebCore 0x000000010573175c _ZN7WebCore16ScriptController15evaluateInWorldERKNS_16ScriptSourceCodeERNS_15DOMWrapperWorldE + 284 25 WebCore 0x0000000105731999 _ZN7WebCore16ScriptController8evaluateERKNS_16ScriptSourceCodeE + 41 26 WebCore 0x00000001057378ac _ZN7WebCore13ScriptElement13executeScriptERKNS_16ScriptSourceCodeE + 316 27 WebCore 0x0000000105736556 _ZN7WebCore13ScriptElement13prepareScriptERKN3WTF12TextPositionENS0_17LegacyTypeSupportE + 1046 28 WebCore 0x0000000104f49e5b _ZN7WebCore16HTMLScriptRunner9runScriptEPNS_7ElementERKN3WTF12TextPositionE + 347 29 WebCore 0x0000000104f49cb0 _ZN7WebCore16HTMLScriptRunner7executeEN3WTF10PassRefPtrINS_7ElementEEERKNS1_12TextPositionE + 48 30 WebCore 0x0000000104eee346 _ZN7WebCore18HTMLDocumentParser30runScriptsForPausedTreeBuilderEv + 86 31 WebCore 0x0000000104eee40d _ZN7WebCore18HTMLDocumentParser16canTakeNextTokenENS0_15SynchronousModeERNS_11PumpSessionE + 93 32 WebCore 0x0000000104eedfa3 _ZN7WebCore18HTMLDocumentParser13pumpTokenizerENS0_15SynchronousModeE + 595 33 WebCore 0x0000000104eeecbd _ZN7WebCore18HTMLDocumentParser6appendEN3WTF10PassRefPtrINS1_10StringImplEEE + 669 34 WebCore 0x0000000104c9df5c _ZN7WebCore25DecodedDataDocumentParser5flushERNS_14DocumentWriterE + 92 35 WebCore 0x0000000104cf2fbb _ZN7WebCore14DocumentWriter3endEv + 43 36 WebCore 0x0000000104cdbd1c _ZN7WebCore14DocumentLoader15finishedLoadingEd + 268 37 WebCore 0x0000000104b1c8a9 _ZN7WebCore14CachedResource11checkNotifyEv + 153 38 WebCore 0x0000000104b18cd3 _ZN7WebCore17CachedRawResource13finishLoadingEPNS_12SharedBufferE + 227 39 WebCore 0x0000000105864711 _ZN7WebCore17SubresourceLoader16didFinishLoadingEd + 1153 40 CFNetwork 0x00007fff89ca58c2 __65-[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:]_block_invoke + 69 41 CFNetwork 0x00007fff89ca573e -[NSURLConnectionInternal _withConnectionAndDelegate:onlyActive:] + 233 42 CFNetwork 0x00007fff89ca5643 -[NSURLConnectionInternal _withActiveConnectionAndDelegate:] + 48 43 CFNetwork 0x00007fff89ca6654 ___ZN27URLConnectionClient_Classic26_delegate_didFinishLoadingEU13block_pointerFvvE_block_invoke + 104 44 CFNetwork 0x00007fff89d836eb ___ZN27URLConnectionClient_Classic18_withDelegateAsyncEPKcU13block_pointerFvP16_CFURLConnectionPK33CFURLConnectionClientCurrent_VMaxE_block_invoke_2 + 100 45 libdispatch.dylib 0x00007fff92540409 _dispatch_client_callout + 8 46 libdispatch.dylib 0x00007fff925569f8 _dispatch_block_invoke + 474 47 CFNetwork 0x00007fff89bff9c0 _ZN19RunloopBlockContext13_invoke_blockEPKvPv + 24 48 CoreFoundation 0x00007fff8fa59144 CFArrayApplyFunction + 68 49 CFNetwork 0x00007fff89bff8b9 _ZN19RunloopBlockContext7performEv + 137 50 CFNetwork 0x00007fff89bff690 _ZN17MultiplexerSource7performEv + 282 51 CFNetwork 0x00007fff89bff4b2 _ZN17MultiplexerSource8_performEPv + 72 52 CoreFoundation 0x00007fff8fa8ce21 __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE0_PERFORM_FUNCTION__ + 17 53 CoreFoundation 0x00007fff8fa7ec4c __CFRunLoopDoSources0 + 556 54 CoreFoundation 0x00007fff8fa7e16f __CFRunLoopRun + 927 55 CoreFoundation 0x00007fff8fa7db68 CFRunLoopRunSpecific + 296 56 DumpRenderTree 0x0000000103398c8f _ZL7runTestRKNSt3__112basic_stringIcNS_11char_traitsIcEENS_9allocatorIcEEEE + 2463 57 DumpRenderTree 0x00000001033980b9 _Z14dumpRenderTreeiPPKc + 2928 58 DumpRenderTree 0x0000000103399572 _Z18DumpRenderTreeMainiPPKc + 1388
Not sure if this is related to bug 123029.