manoranjanr@ and nyerramilli@ notices that bisect-builds doesn't invoke chromium on Mac:

Copied original email:

chromium is not invoked, thought that might be network issue.
We are using the latest script and most of the machines are upgraded to OS X 10.11.3 might be that is the reason? If possible could you please check.

Note: 
1. It is working for ET team also with bit delay and it is working fine in Windows also.
2. Previously the same script worked fine in Mac (with little bit delay in invoking)
3. Tried with diff revisions:
python bisect-builds.py -a mac -g 373418 -b 373703
python bisect-builds.py -a mac -g 373500 -b 374033


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The bottleneck is when the scripts tries to convert some git hash to numeric revisions (during the svn-git migration, a few revisions listed in http://commondatastorage.googleapis.com/chromium-browser-snapshots/?delimiter=/&prefix=Mac/  are in hashcode), it tries to fetch from url like https://chromium.googlesource.com/chromium/src/+/640e7e61d46e5e19183fea3db7aa9f5e3ccd1bdc?format=json, which always return 404, and it wasted a lot of time (wont finish in more than 20mins, please see the log for reference)