On 14/11/2019 18:23, Tobias Nipkow wrote:
> This is how my build of HOL fails - I am on 8d51418d4ec0.
This means that the HOL.db file in the heaps directory somehow got into
a bad state, e.g. when two build processes attempt to update it without
proper coordination.
Normally it is sufficient to force a fresh build, e.g. with option -c or -f.
In rare situations one needs to remove the bad database file manually.
Makarius
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