Failure is:

virtual memory exhausted: Cannot allocate memory

Unclear which file is OOMing.

Sample logs:

• https://ci.pytorch.org/jenkins/job/pytorch-builds/job/pytorch-linux-trusty-py3.6-gcc7.2-build/6344/console
• https://ci.pytorch.org/jenkins/job/pytorch-builds/job/pytorch-linux-trusty-py3.6-gcc7.2-build/6283//console
• https://ci.pytorch.org/jenkins/job/pytorch-builds/job/pytorch-linux-trusty-py3.6-gcc7.2-build/6326//console
• https://ci.pytorch.org/jenkins/job/pytorch-builds/job/pytorch-linux-trusty-py3.6-gcc7.2-build/6346/console

It doesn't seem to be correlated with builder machine. Maybe we can reduce parallelism for these jobs to solve the problem.