It may not be 100% reproducible, but typically nightly is failing on PRs with essentially no explanation:
https://ci.appveyor.com/project/timholy/revise-jl/builds/31786396
https://travis-ci.org/github/timholy/Revise.jl/builds/668050922?utm_source=github_status&utm_medium=notification
https://ci.appveyor.com/project/JuliaArrays/offsetarrays-jl/builds/31797030
AFAICT it only affects non-Linux platforms.
Probably https://github.com/JuliaLang/julia/pull/34347 which also broke PkgEval?
PR was reverted
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Probably https://github.com/JuliaLang/julia/pull/34347 which also broke PkgEval?