User Agent: Mozilla/5.0 (X11; Linux x86_64; rv:52.0) Gecko/20100101 Firefox/52.0 Build ID: 20160928162746 Steps to reproduce: Updated hg repository to latest, mach build Actual results: 14:34.50 In file included from /mnt/to_archive/accum/src/mozilla-central/obj-x86_64-pc-linux-gnu/ipc/ipdl/PBackgroundChild.cpp:26:0, 14:34.50 from /mnt/to_archive/accum/src/mozilla-central/obj-x86_64-pc-linux-gnu/ipc/ipdl/UnifiedProtocols1.cpp:110: 14:34.50 /mnt/to_archive/accum/src/mozilla-central/obj-x86_64-pc-linux-gnu/ipc/ipdl/_ipdlheaders/mozilla/camera/PCamerasChild.h:17:26: fatal error: CamerasTypes.h: No such file or directory 14:34.50 #include "CamerasTypes.h" 14:34.50 ^ 14:34.50 compilation terminated. 14:34.52 14:34.52 In the directory /mnt/to_archive/accum/src/mozilla-central/obj-x86_64-pc-linux-gnu/ipc/ipdl 14:34.52 The following command failed to execute properly: 14:34.52 /usr/bin/ccache /usr/lib64/ccache/g++ -std=gnu++11 -o UnifiedProtocols1.o -c -I/mnt/to_archive/accum/src/mozilla-central/obj-x86_64-pc-linux-gnu/dist/stl_wrappers -I/mnt/to_archive/accum/src/mozilla-central/obj-x86_64-pc-linux-gn u/dist/system_wrappers -include /mnt/to_archive/accum/src/mozilla-central/config/gcc_hidden.h -DNDEBUG=1 -DTRIMMED=1 -DOS_POSIX=1 -DOS_LINUX=1 -DSTATIC_EXPORTABLE_JS_API -DMOZILLA_INTERNAL_API -DIMPL_LIBXUL -I/mnt/to_archive/accum/src/moz illa-central/ipc/ipdl -I/mnt/to_archive/accum/src/mozilla-central/obj-x86_64-pc-linux-gnu/ipc/ipdl -I/mnt/to_archive/accum/src/mozilla-central/obj-x86_64-pc-linux-gnu/ipc/ipdl/_ipdlheaders -I/mnt/to_archive/accum/src/mozilla-central/ipc/c hromium/src -I/mnt/to_archive/accum/src/mozilla-central/ipc/glue -I/mnt/to_archive/accum/src/mozilla-central/obj-x86_64-pc-linux-gnu/dist/include -I/mnt/to_archive/accum/src/mozilla-central/obj-x86_64-pc-linux-gnu/dist/include/nspr -I/mnt /to_archive/accum/src/mozilla-central/obj-x86_64-pc-linux-gnu/dist/include/nss -fPIC -DMOZILLA_CLIENT -include /mnt/to_archive/accum/src/mozilla-central/obj-x86_64-pc-linux-gnu/mozilla-config.h -MD -MP -MF .deps/UnifiedProtocols1.o.pp -Wa ll -Wc++11-compat -Wempty-body -Wignored-qualifiers -Woverloaded-virtual -Wpointer-arith -Wsign-compare -Wtype-limits -Wunreachable-code -Wwrite-strings -Wno-invalid-offsetof -Wc++14-compat -Wno-error=maybe-uninitialized -Wno-error=deprec ated-declarations -Wno-error=array-bounds -fno-exceptions -fno-strict-aliasing -fno-rtti -fno-exceptions -fno-math-errno -pthread -pipe -g -Wall -fno-schedule-insns2 -fno-lifetime-dse -fno-delete-null-pointer-checks -O3 -fomit-frame-point er -I/mnt/to_archive/accum/src/mozilla-central/widget/gtk/compat-gtk3 -pthread -I/usr/include/gtk-3.0/unix-print -I/usr/include/gtk-3.0 -I/usr/include/at-spi2-atk/2.0 -I/usr/include/at-spi-2.0 -I/usr/include/dbus-1.0 -I/usr/lib64/dbus-1.0 /include -I/usr/include/gtk-3.0 -I/usr/include/gio-unix-2.0/ -I/usr/include/cairo -I/usr/include/pango-1.0 -I/usr/include/harfbuzz -I/usr/include/pango-1.0 -I/usr/include/atk-1.0 -I/usr/include/cairo -I/usr/include/pixman-1 -I/usr/include /freetype2 -I/usr/include/libpng16 -I/usr/include/freetype2 -I/usr/include/libdrm -I/usr/include/libpng16 -I/usr/include/gdk-pixbuf-2.0 -I/usr/include/libpng16 -I/usr/include/glib-2.0 -I/usr/lib64/glib-2.0/include /mnt/to_archive/accum/sr c/mozilla-central/obj-x86_64-pc-linux-gnu/ipc/ipdl/UnifiedProtocols1.cpp 14:34.52 /mnt/to_archive/accum/src/mozilla-central/config/rules.mk:977: recipe for target 'UnifiedProtocols1.o' failed 14:34.52 gmake[5]: *** [UnifiedProtocols1.o] Error 1 14:34.52 gmake[5]: *** Waiting for unfinished jobs.... Expected results: PASS PASS

Still happening after today's updates to hg, 20160930.

And after today's updates to hg, 20151001. So I did a bisect, and found that the changeset that caused the error is $ hg bisect --bad The first bad revision is: changeset: 315643:2a3ee1d58982 parent: 315642:2e36f973cedf parent: 315518:b1d60f2f68c7 user: Carsten "Tomcat" Book <cbook@mozilla.com> date: Wed Sep 28 16:25:01 2016 +0200 summary: Merge mozilla-central to mozilla-inbound Not all ancestors of this changeset have been checked. Use bisect --extend to continue the bisection from the common ancestor, 51836860e20b. $ hg log -v -r 315643 changeset: 315643:2a3ee1d58982 parent: 315642:2e36f973cedf parent: 315518:b1d60f2f68c7 user: Carsten "Tomcat" Book <cbook@mozilla.com> date: Wed Sep 28 16:25:01 2016 +0200 files: devtools/client/inspector/inspector-panel.js netwerk/srtp/src/crypto/include/gf2_8.h netwerk/srtp/src/crypto/math/gf2_8.c old-configure.in taskcluster/taskgraph/task/legacy.py description: Merge mozilla-central to mozilla-inbound I'll continue the bisect to see what it finds, not sure what the result will be.

Here is the final result. Seems to be correct, since it is about cameras. $ hg bisect --good The first bad revision is: changeset: 315618:145c594a51c5 user: Gian-Carlo Pascutto <gcp@mozilla.com> date: Mon Sep 19 17:49:59 2016 +0200 summary: Bug 1303713. r=tedd $ hg log -v -r 315618 changeset: 315618:145c594a51c5 user: Gian-Carlo Pascutto <gcp@mozilla.com> date: Mon Sep 19 17:49:59 2016 +0200 files: dom/media/systemservices/CamerasChild.cpp dom/media/systemservices/CamerasChild.h dom/media/systemservices/CamerasParent.cpp dom/media/systemservices/CamerasParent.h dom/media/systemservices/CamerasTypes.h dom/media/systemservices/PCameras.ipdl dom/media/systemservices/moz.build description: Bug 1303713. r=tedd