# < git ls-remote /scratch/git/linus.git refs/heads/master
# < git rev-parse tmp/linus
remote == local, skipping fetch
# < git rev-parse tmp/linus
Upstream revision is 85f2e689a5c8fb6ed8fdbee00109e7f6e5fefcb6
Head not built, building
# < git reset --mixed
# git branch -D linus
Deleted branch linus (was 85f2e68).
# git checkout -q -f -b linus tmp/linus
# < git ls-files --others --modified
# git ls-files --others --modified
cmd.log
# < /scratch/kisskb/prod/kisskb/kisskb3/backend/makewrap.py ARCH=sh O=/scratch/kisskb/prod/kisskb/kisskb3/backend/build/linus_snapgear_defconfig_sh4 CROSS_COMPILE=/opt/crosstool/gcc-4.3.2-nolibc/bin/sh4-linux-  -f kisskb-version.mk
makewrap: Added ccache to CROSS_COMPILE
makewrap: Using -j factor 128
# < /scratch/kisskb/prod/kisskb/kisskb3/backend/makewrap.py ARCH=sh O=/scratch/kisskb/prod/kisskb/kisskb3/backend/build/linus_snapgear_defconfig_sh4 CROSS_COMPILE=/opt/crosstool/gcc-4.3.2-nolibc/bin/sh4-linux-  snapgear_defconfig
makewrap: Added ccache to CROSS_COMPILE
makewrap: Using -j factor 128
make[2]: *** [snapgear_defconfig] Error 1
make[1]: *** [snapgear_defconfig] Error 2
make: *** [sub-make] Error 2
make failed, trying to bisect ..
## bisect start
Last known good revision 151f52f09c5728ecfdd0c289da1a4b30bb416f2c
# < git symbolic-ref HEAD
# < git merge-base 151f52f09c5728ecfdd0c289da1a4b30bb416f2c 85f2e689a5c8fb6ed8fdbee00109e7f6e5fefcb6

# < git ls-files --others --modified
# git ls-files --others --modified
cmd.log
# git bisect reset linus
Already on 'linus'
# git bisect start
# git bisect bad
# git bisect good 151f52f09c5728ecfdd0c289da1a4b30bb416f2c
Bisecting: 11192 revisions left to test after this (roughly 14 steps)
[bd4a6974cc9090ef3851e5b0a2071e5383565c7c] Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6
Trying 85f2e689a5c8fb6ed8fdbee00109e7f6e5fefcb6

# < /scratch/kisskb/prod/kisskb/kisskb3/backend/makewrap.py ARCH=sh O=/scratch/kisskb/prod/kisskb/kisskb3/backend/build/linus_snapgear_defconfig_sh4 CROSS_COMPILE=/opt/crosstool/gcc-4.3.2-nolibc/bin/sh4-linux-  snapgear_defconfig
makewrap: Added ccache to CROSS_COMPILE
makewrap: Using -j factor 128
make[2]: *** [snapgear_defconfig] Error 1
make[1]: *** [snapgear_defconfig] Error 2
make: *** [sub-make] Error 2
bisect failed 85f2e689a5c8fb6ed8fdbee00109e7f6e5fefcb6

# git bisect bad
Bisecting: 5571 revisions left to test after this (roughly 13 steps)
[fb5131e1880ea1ba3ba7197cd5cc66c9c288f715] Merge branch 'for-linus' of git://git390.marist.edu/pub/scm/linux-2.6
# < git symbolic-ref HEAD
fatal: ref HEAD is not a symbolic ref
Traceback (most recent call last):
  File "/scratch/kisskb/prod/kisskb/kisskb3/backend/backend.py", line 151, in _do_build
    self.bisect()
  File "/scratch/kisskb/prod/kisskb/kisskb3/backend/backend.py", line 228, in bisect
    current = self.current_head_revid()
  File "/scratch/kisskb/prod/kisskb/kisskb3/backend/backend.py", line 253, in current_head_revid
    ref = call_pipe('git symbolic-ref HEAD', self.log).strip()
  File "/scratch/kisskb/prod/kisskb/kisskb3/backend/utils.py", line 32, in call_pipe
    raise CommandFailedException(cmd, p.returncode)
CommandFailedException: Failed running "git symbolic-ref HEAD" (128)