~/bibisect-win32-5.1
$ git bisect good
2657d8d66ffd95013a4913d929ae452186be8be7 is the first bad commit
commit 2657d8d66ffd95013a4913d929ae452186be8be7
Author: Norbert Thiebaud <nthiebaud@gmail.com>
Date:   Fri Sep 4 17:35:26 2015 -0700

    source sha:f7bc163ca4f643b6f046892de6d99ec8049b6955

    source sha:f7bc163ca4f643b6f046892de6d99ec8049b6955
    source sha:c82672717b5f355bc406f0b5d78b5d6c5b9dd621
    source sha:7289f291fe6a43487c7edeb2b14169cc3a0d6694
    source sha:2b8e62f7b6e0a45a9ff1ec530b2e941f3fbcf1a0

:040000 040000 1c05cb92d4222a746f9cea4afbe7ab9d1be3fda5 d9ab5d07a569de2a97b4f666483d04049826506c M      instdir

 ~/bibisect-win32-5.1
$ git bisect log
# bad: [05d11632892a322664fb52bac90b2598b7fb7544] source sha:5616d22b57a9a5e57d545e912e029162a230829b
# good: [c1efd324c6ad448ac9edb030dc9738b9e6899e4d] source sha:ab465b90f6c6da5595393a0ba73f33a1e71a2b65
git bisect start 'origin/master' 'oldest'
# bad: [97526ab777da7e58ce283c05498262ecdd4d6f7f] source sha:4ea70f87f7a2b61eda6e5ab1f48debf6fcfadc1f
git bisect bad 97526ab777da7e58ce283c05498262ecdd4d6f7f
# good: [2202cdaa0eae3f646f1285a0ea45934edeb26e8a] source sha:a88bf8fd10c42a15e5d6e66da656889c82b4933a
git bisect good 2202cdaa0eae3f646f1285a0ea45934edeb26e8a
# good: [13169de9868218d603d1ae26805ebf4583e7d628] source sha:6f98a0ab51cc5c860576b4ad44478b438cc5a5eb
git bisect good 13169de9868218d603d1ae26805ebf4583e7d628
# good: [1c81e0f3ca26bf56c3e7948016ca44369345a120] source sha:48a047f2f4e7b4b3bed33a99d37fd48025381646
git bisect good 1c81e0f3ca26bf56c3e7948016ca44369345a120
# good: [0c64975db7fb512df222b73d4f4f05c513ce53d7] source sha:5fb46c8778be27e2838cc61b14e2af5d4647726c
git bisect good 0c64975db7fb512df222b73d4f4f05c513ce53d7
# good: [55adbd443057f203ca3903c99f05b1792f8fcde6] source sha:51242678e2132d2172b9a63125a0974044baf8aa
git bisect good 55adbd443057f203ca3903c99f05b1792f8fcde6
# good: [02dafbab4e3c222245d9598e73872bbcf1703025] source sha:034b1b724aeed9ae02990354caa2a402a13386c0
git bisect good 02dafbab4e3c222245d9598e73872bbcf1703025
# bad: [3aad61b15bfbf70aeae190e79554b2b69cd24462] source sha:e65c447cef27ce98a2f66e830ba7f03f1c70a5f6
git bisect bad 3aad61b15bfbf70aeae190e79554b2b69cd24462
# good: [b107bb8166c0c73621d4dc13f79f9699ddac2e79] source sha:11157d95b0775286f660be934ef545d0d2323387
git bisect good b107bb8166c0c73621d4dc13f79f9699ddac2e79
# good: [355dbae2f3e2c934df5ce6bba410f429806be7aa] source sha:7088dadc52d56e56aa674c95673a3f83cf4e1ab3
git bisect good 355dbae2f3e2c934df5ce6bba410f429806be7aa
# bad: [2657d8d66ffd95013a4913d929ae452186be8be7] source sha:f7bc163ca4f643b6f046892de6d99ec8049b6955
git bisect bad 2657d8d66ffd95013a4913d929ae452186be8be7
# good: [223413427639dd540a04bf94186d669467bb42f0] source sha:9cb929d8bb58b6f941d74bd532cecb252d2b2983
git bisect good 223413427639dd540a04bf94186d669467bb42f0
# good: [a9be12e79cbd0acf2132a1ad5cd8b255bac43b89] source sha:a1fd97308d7fc7a35a5def1e15a05099dba90f91
git bisect good a9be12e79cbd0acf2132a1ad5cd8b255bac43b89
# first bad commit: [2657d8d66ffd95013a4913d929ae452186be8be7] source sha:f7bc163ca4f643b6f046892de6d99ec8049b6955