Julia_1.4.2：runtests all failed on Nix building.

[GTrunSec]

we had a discussion about testall in issue part of Nixos.

• error output of tail in nix Hydra-CI
• full building process output in nix Hydra-CI
  Those logs may help you give us some ideas about how to pass the testall in Nix

Error in testset precompile:
Error During Test at none:1
  Test threw exception
  Expression: precompile
  Some tests did not pass: 103 passed, 1 failed, 0 errored, 0 broken.

ERROR: LoadError: Test run finished with errors
in expression starting at /nix/store/9qx36gm9cx4bhk023mmr45lhdqmzmxbr-julia-1.4.2/share/julia/test/runtests.jl:67
ERROR: A test has failed. Please submit a bug report (https://github.com/JuliaLang/julia/issues)
including error messages above and the output of versioninfo():
Julia Version 1.4.2
Commit 44fa15b150* (2020-05-23 18:35 UTC)
Platform Info:
  OS: Linux (x86_64-unknown-linux-gnu)
  CPU: Intel(R) Xeon(R) CPU E5-2660 v4@ 2.00GHz
  WORD_SIZE: 64
  LIBM: libopenlibm
  LLVM: libLLVM-8.0.1 (ORCJIT, broadwell)
Environment:
  JULIA_CPU_THREADS = 54

[simonbyrne]

Closing this as 1.4 is no longer supported. Please reopen if still an issue on the latest release.