$ ulimit -c unlimited $ firefox-aurora Assertion failure: IsSingleThreaded(), at /builds/slave/m-aurora-l64-ntly-000000000000/build/src/security/sandbox/linux/Sandbox.cpp:527 [Parent 29985] WARNING: pipe error (45): Connection reset by peer: file /builds/slave/m-aurora-l64-ntly-000000000000/build/src/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 459 ###!!! [Parent][MessageChannel] Error: (msgtype=0x44003D,name=PContent::Msg_LoadProcessScript) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x44001A,name=PContent::Msg_PreferenceUpdate) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x44001A,name=PContent::Msg_PreferenceUpdate) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x44001A,name=PContent::Msg_PreferenceUpdate) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x44001A,name=PContent::Msg_PreferenceUpdate) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x44001A,name=PContent::Msg_PreferenceUpdate) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x44001A,name=PContent::Msg_PreferenceUpdate) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x44001A,name=PContent::Msg_PreferenceUpdate) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x44001A,name=PContent::Msg_PreferenceUpdate) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x44001A,name=PContent::Msg_PreferenceUpdate) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x44001A,name=PContent::Msg_PreferenceUpdate) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x44001A,name=PContent::Msg_PreferenceUpdate) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x44001A,name=PContent::Msg_PreferenceUpdate) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x44001A,name=PContent::Msg_PreferenceUpdate) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x44003D,name=PContent::Msg_LoadProcessScript) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x44001A,name=PContent::Msg_PreferenceUpdate) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x44001A,name=PContent::Msg_PreferenceUpdate) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x440001,name=PContent::Msg_PBrowserConstructor) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x440001,name=PContent::Msg_PBrowserConstructor) Channel error: cannot send/recv ************************* A coding exception was thrown in a Promise resolution callback. See https://developer.mozilla.org/Mozilla/JavaScript_code_modules/Promise.jsm/Promise Full message: TypeError: frameLoader.tabParent is null Full stack: set_docShellIsActive@chrome://global/content/bindings/remote-browser.xml:229:13 updateBrowserRemoteness@chrome://browser/content/tabbrowser.xml:1518:1 updateBrowserRemotenessByURL@chrome://browser/content/tabbrowser.xml:1576:1 restoreTab@resource:///modules/sessionstore/SessionStore.jsm:2985:5 navigateAndRestore/<@resource:///modules/sessionstore/SessionStore.jsm:2294:7 Handler.prototype.process@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:934:23 this.PromiseWalker.walkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:813:7 Promise*this.PromiseWalker.scheduleWalkerLoop@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:744:11 this.PromiseWalker.schedulePromise@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:776:7 this.PromiseWalker.completePromise@resource://gre/modules/Promise.jsm -> resource://gre/modules/Promise-backend.js:711:7 resolve@resource:///modules/sessionstore/TabStateFlusher.jsm:96:5 resolve@resource:///modules/sessionstore/TabStateFlusher.jsm:34:5 receiveMessage@resource:///modules/sessionstore/SessionStore.jsm:692:11 SyncHandler.init@chrome://browser/content/content-sessionStore.js:202:5 @chrome://browser/content/content-sessionStore.js:729:1 _createPreloadBrowser@chrome://browser/content/tabbrowser.xml:1642:13 _handleNewTab@chrome://browser/content/tabbrowser.xml:5234:11 addTab/<@chrome://browser/content/tabbrowser.xml:1799:17 setTimeout handler*addTab@chrome://browser/content/tabbrowser.xml:1798:1 EventListener.handleEvent*gBrowserInit.onLoad@chrome://browser/content/browser.js:12050:5 onload@chrome://browser/content/browser.xul:1:1 ************************* ###!!! [Parent][MessageChannel] Error: (msgtype=0x280063,name=PBrowser::Msg_UpdateDimensions) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x280063,name=PBrowser::Msg_UpdateDimensions) Channel error: cannot send/recv ###!!! [Parent][OnMaybeDequeueOne] Error: Channel error: cannot send/recv ###!!! [Parent][OnMaybeDequeueOne] Error: Channel error: cannot send/recv ###!!! [Parent][OnMaybeDequeueOne] Error: Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x280082,name=PBrowser::Msg_Destroy) Channel error: cannot send/recv [Parent 29985] WARNING: FileDescriptorSet destroyed with unconsumed descriptors: file /builds/slave/m-aurora-l64-ntly-000000000000/build/src/ipc/chromium/src/chrome/common/file_descriptor_set_posix.cc, line 20 [Parent 29985] WARNING: FileDescriptorSet destroyed with unconsumed descriptors: file /builds/slave/m-aurora-l64-ntly-000000000000/build/src/ipc/chromium/src/chrome/common/file_descriptor_set_posix.cc, line 20 [Parent 29985] WARNING: FileDescriptorSet destroyed with unconsumed descriptors: file /builds/slave/m-aurora-l64-ntly-000000000000/build/src/ipc/chromium/src/chrome/common/file_descriptor_set_posix.cc, line 20 ###!!! [Parent][MessageChannel] Error: (msgtype=0x280063,name=PBrowser::Msg_UpdateDimensions) Channel error: cannot send/recv ###!!! [Parent][MessageChannel] Error: (msgtype=0x280063,name=PBrowser::Msg_UpdateDimensions) Channel error: cannot send/recv Assertion failure: IsSingleThreaded(), at /builds/slave/m-aurora-l64-ntly-000000000000/build/src/security/sandbox/linux/Sandbox.cpp:527 [Parent 29985] WARNING: pipe error (64): Connection reset by peer: file /builds/slave/m-aurora-l64-ntly-000000000000/build/src/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 459 [Parent 29985] WARNING: pipe error (69): Connection reset by peer: file /builds/slave/m-aurora-l64-ntly-000000000000/build/src/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 459 [Parent 29985] WARNING: pipe error (71): Connection reset by peer: file /builds/slave/m-aurora-l64-ntly-000000000000/build/src/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 459 [Parent 29985] WARNING: pipe error (73): Connection reset by peer: file /builds/slave/m-aurora-l64-ntly-000000000000/build/src/ipc/chromium/src/chrome/common/ipc_channel_posix.cc, line 459 ###!!! [Parent][MessageChannel] Error: (msgtype=0x280082,name=PBrowser::Msg_Destroy) Channel error: cannot send/recv