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Description
Sometime in 51c2766...ed2cb49 the time went from 2h to 12h (often, but not always)
At some point f35014 started segfaulting
Sometime around 0625b3a...f209eba everything started segfaulting very fast
At sometime we lost all coverage of the Compiler stdlib
jl_coverage_alloc_line is segfaulting on some of the builds that manage to avoid the other of those issues (allocator corruption)