Traceback (most recent call last):
  File "build/proto/lib/python/mercurial/commands.py", line 3277, in dispatch
  File "build/proto/lib/python/mercurial/commands.py", line 3236, in <lambda>
  File "cdm.py", line 373, in cdm_recommit
  File "WorkSpace.py", line 666, in squishdeltas
  File "build/proto/lib/python/hgext/mq.py", line 687, in strip
  File "build/proto/lib/python/mercurial/hg.py", line 255, in clean
  File "build/proto/lib/python/mercurial/merge.py", line 521, in update
  File "build/proto/lib/python/mercurial/merge.py", line 394, in applyupdates
  File "build/proto/lib/python/mercurial/localrepo.py", line 546, in wwrite
  File "build/proto/lib/python/mercurial/util.py", line 1092, in o
IOError: [Errno 13] Permission denied: '/builds/sfwnv/usr/src/cmd/mercurial/Makefile.sfw'
abort: Permission denied: /builds/sfwnv/usr/src/cmd/mercurial/Makefile.sfw