Segfault during very long run

[ZetaTwo]

I ran hashr on 1.2TB of input (400k .deb files) and after 3 days, having processed about 120k packages, it crashed with a segfault. I have attached the log.

hashr-crash.log

[ZetaTwo]

A quick glance suggests that the crash happens while saving the cache in github.com/google/hashr/cache.Save({0xdefb4c, 0x3}, {0xdf0795, 0x5}, 0xc0925dfdf8?)