After updating to m-c tip today and trying to build, I hit the bustage below. 0:00.76 c:\mozilla-build\mozmake\mozmake.EXE -f client.mk -s 0:15.37 Automatically clobbering c:\Users\Ryan\repos\mozilla-central\objdir-fx-64 0:15.37 rmtree() failed for "('c:\\Users\\Ryan\\repos\\mozilla-central\\objdir-fx-64',)". Reason: The process cannot access the file because it is being used by another process (13). Retrying... 0:15.37 rmtree() failed for "('c:\\Users\\Ryan\\repos\\mozilla-central\\objdir-fx-64',)". Reason: The process cannot access the file because it is being used by another process (13). Retrying... 0:15.37 rmtree() failed for "('c:\\Users\\Ryan\\repos\\mozilla-central\\objdir-fx-64',)". Reason: The process cannot access the file because it is being used by another process (13). Retrying... 0:15.37 rmtree() failed for "('c:\\Users\\Ryan\\repos\\mozilla-central\\objdir-fx-64',)". Reason: The process cannot access the file because it is being used by another process (13). Retrying... 0:15.37 rmtree() failed for "('c:\\Users\\Ryan\\repos\\mozilla-central\\objdir-fx-64',)". Reason: The process cannot access the file because it is being used by another process (13). Retrying... 0:15.38 Traceback (most recent call last): 0:15.38 File "c:/Users/Ryan/repos/mozilla-central/config/pythonpath.py", line 56, in <module> 0:15.38 main(sys.argv[1:]) 0:15.38 File "c:/Users/Ryan/repos/mozilla-central/config/pythonpath.py", line 48, in main 0:15.38 execfile(script, frozenglobals) 0:15.38 File "c:/Users/Ryan/repos/mozilla-central/python/mozbuild/mozbuild/controller/clobber.py", line 196, in <module> 0:15.38 sys.exit(main(sys.argv[1:], os.environ, os.getcwd(), sys.stdout)) 0:15.38 File "c:/Users/Ryan/repos/mozilla-central/python/mozbuild/mozbuild/controller/clobber.py", line 184, in main 0:15.38 required, performed, message = clobber.maybe_do_clobber(cwd, auto, fh) 0:15.38 File "c:/Users/Ryan/repos/mozilla-central/python/mozbuild/mozbuild/controller/clobber.py", line 153, in maybe_do_clobber 0:15.38 rmtree(self.topobjdir) 0:15.39 File "c:\Users\Ryan\repos\mozilla-central\testing\mozbase\mozfile\mozfile\mozfile.py", line 137, in rmtree 0:15.39 return remove(dir) 0:15.39 File "c:\Users\Ryan\repos\mozilla-central\testing\mozbase\mozfile\mozfile\mozfile.py", line 234, in remove 0:15.39 _call_with_windows_retry(shutil.rmtree, (path,)) 0:15.39 File "c:\Users\Ryan\repos\mozilla-central\testing\mozbase\mozfile\mozfile\mozfile.py", line 193, in _call_with_windows_retry 0:15.39 _call_windows_retry(*args, **kwargs) 0:15.39 File "c:\Users\Ryan\repos\mozilla-central\testing\mozbase\mozfile\mozfile\mozfile.py", line 151, in _call_windows_retry 0:15.40 func(*args) 0:15.40 File "c:\mozilla-build\python\lib\shutil.py", line 247, in rmtree 0:15.40 rmtree(fullname, ignore_errors, onerror) 0:15.40 File "c:\mozilla-build\python\lib\shutil.py", line 252, in rmtree 0:15.40 onerror(os.remove, fullname, sys.exc_info()) 0:15.40 File "c:\mozilla-build\python\lib\shutil.py", line 250, in rmtree 0:15.40 os.remove(fullname) 0:15.40 WindowsError: [Error 32] The process cannot access the file because it is being used by another process: 'c:\\Users\\Ryan\\repos\\mozilla-central\\objdir-fx-64\\.mozbuild\\last_log.json' 0:15.41 client.mk:344: recipe for target 'c:/Users/Ryan/repos/mozilla-central/objdir-fx-64/CLOBBER' failed 0:15.41 mozmake.EXE: *** [c:/Users/Ryan/repos/mozilla-central/objdir-fx-64/CLOBBER] Error 1 I was able to build successfully after manually running |./mach clobber|.

As I just wrote in bug 1195748, this also explains a scenario where the log may not be there at the end of the build on Linux and Mac. I think the reasonable thing to do here is to exclude the file from clobbering.

And excluding files from clobbering is related to bug 974281 (Visual Studio IDE files). The patch in that bug supports a set of paths to not clobber. I should land that bug and we can extend the "no clobber" list.

I'll get bug 974281 landed, then we can make an exception for log files.

This is still happening, and bug 974281 doesn't seem to have gotten any traction in a few weeks.

Is there something we can back out to get this working again? This is the 3rd time in the past month or so that my Windows builds have gone broken in some way. It's hard to get traction because so few people are building on Windows.

Disable autoclobber and clobber manually when you're asked to.

What glandium said. I'm waiting for a re-review on bug 974281. Hopefully ted will get to it soon.

Sorry, I think I forgot to re-mark r+ since it was already marked r+...

I'll code up a patch real quick.

Comment on attachment 8783002 [details] Bug 1290201 - Don't clobber .mozbuild directory by default; https://reviewboard.mozilla.org/r/73000/#review70798

Pushed by gszorc@mozilla.com: https://hg.mozilla.org/integration/autoland/rev/43ed93524911 Don't clobber .mozbuild directory by default; r=ted

This is not fixed. $ mach build 0:04.92 c:\mozilla-build\mozmake\mozmake.EXE -f client.mk -s 0:55.14 Automatically clobbering f:\m\mozilla-unified\obj-x86_64-pc-mingw32 0:55.14 rmtree() failed for "('f:\\m\\mozilla-unified\\obj-x86_64-pc-mingw32',)". Reason: プロセスはファイルにアクセスできません。別のプロセスが使用中です。 (13). Retrying... 0:55.14 rmtree() failed for "('f:\\m\\mozilla-unified\\obj-x86_64-pc-mingw32',)". Reason: プロセスはファイルにアクセスできません。別のプロセスが使用中です。 (13). Retrying... 0:55.14 rmtree() failed for "('f:\\m\\mozilla-unified\\obj-x86_64-pc-mingw32',)". Reason: プロセスはファイルにアクセスできません。別のプロセスが使用中です。 (13). Retrying... 0:55.14 rmtree() failed for "('f:\\m\\mozilla-unified\\obj-x86_64-pc-mingw32',)". Reason: プロセスはファイルにアクセスできません。別のプロセスが使用中です。 (13). Retrying... 0:55.14 rmtree() failed for "('f:\\m\\mozilla-unified\\obj-x86_64-pc-mingw32',)". Reason: プロセスはファイルにアクセスできません。別のプロセスが使用中です。 (13). Retrying... 0:55.14 Traceback (most recent call last): 0:55.14 File "f:/m/mozilla-unified/config/pythonpath.py", line 56, in <module> 0:55.14 main(sys.argv[1:]) 0:55.14 File "f:/m/mozilla-unified/config/pythonpath.py", line 48, in main 0:55.14 execfile(script, frozenglobals) 0:55.14 File "f:/m/mozilla-unified/python/mozbuild/mozbuild/controller/clobber.py", line 196, in <module> 0:55.14 sys.exit(main(sys.argv[1:], os.environ, os.getcwd(), sys.stdout)) 0:55.14 File "f:/m/mozilla-unified/python/mozbuild/mozbuild/controller/clobber.py", line 184, in main 0:55.14 required, performed, message = clobber.maybe_do_clobber(cwd, auto, fh) 0:55.14 File "f:/m/mozilla-unified/python/mozbuild/mozbuild/controller/clobber.py", line 153, in maybe_do_clobber 0:55.14 rmtree(self.topobjdir) 0:55.14 File "f:\m\mozilla-unified\testing\mozbase\mozfile\mozfile\mozfile.py", line 137, in rmtree 0:55.14 return remove(dir) 0:55.14 File "f:\m\mozilla-unified\testing\mozbase\mozfile\mozfile\mozfile.py", line 234, in remove 0:55.14 _call_with_windows_retry(shutil.rmtree, (path,)) 0:55.14 File "f:\m\mozilla-unified\testing\mozbase\mozfile\mozfile\mozfile.py", line 193, in _call_with_windows_retry 0:55.14 _call_windows_retry(*args, **kwargs) 0:55.15 File "f:\m\mozilla-unified\testing\mozbase\mozfile\mozfile\mozfile.py", line 151, in _call_windows_retry 0:55.15 func(*args) 0:55.15 File "c:\mozilla-build\python\lib\shutil.py", line 247, in rmtree 0:55.15 rmtree(fullname, ignore_errors, onerror) 0:55.15 File "c:\mozilla-build\python\lib\shutil.py", line 252, in rmtree 0:55.15 onerror(os.remove, fullname, sys.exc_info()) 0:55.15 File "c:\mozilla-build\python\lib\shutil.py", line 250, in rmtree 0:55.15 os.remove(fullname) 0:55.15 WindowsError: [Error 32] プロセスはファイルにアクセスできません。別のプロセスが使用中です。: 'f:\\m\\mozilla-unified\\obj-x86_64-pc-mingw32\\.mozbuild\\last_log.json' 0:55.15 client.mk:344: recipe for target 'f:/m/mozilla-unified/obj-x86_64-pc-mingw32/CLOBBER' failed 0:55.15 mozmake.EXE: *** [f:/m/mozilla-unified/obj-x86_64-pc-mingw32/CLOBBER] Error 1 0:55.19 235 compiler warnings present. 2

Please file a new bug.