set SCCACHE_IGNORE_SERVER_IO_ERROR=1
https://github.com/mozilla/sccache/pull/1090 has been accepted by Mozilla.
It will take effect after updating the sccache binaries in S3
Note: last sccache.exe is sccache-20200507.exe
![image](https://user-images.githubusercontent.com/16190118/154428837-d3a092e1-21aa-436d-97e0-541fd7110165.png)
Pull Request resolved: https://github.com/pytorch/pytorch/pull/72795