[ruby-core:112772] [Ruby master Bug#9366] "make -j32 check TESTS=-j32" occasionally fails on rubygems/specification

Issue #9366 has been updated by hsbt (Hiroshi SHIBATA).

Status changed from Assigned to Feedback

@normalperson Do you still have this issue?

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Bug #9366: "make -j32 check TESTS=-j32" occasionally fails on rubygems/specification
https://bugs.ruby-lang.org/issues/9366#change-102267

* Author: normalperson (Eric Wong)
* Status: Feedback
* Priority: Normal
* Assignee: hsbt (Hiroshi SHIBATA)
* ruby -v: ruby 2.2.0dev (2014-01-05 trunk 44507) [x86_64-linux]
* Backport: 2.3: UNKNOWN, 2.4: UNKNOWN, 2.5: UNKNOWN
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This only happens occasionally, maybe 1 out of 10 times during "make check",
so it's probably a bug somewhere with GC.

I'll try to reproduce without parallel tests (could take a while).
It seems to reproduce more easily on slower machine.
I initially thought it was a bug in cachelined, but I can also reproduce it with plain trunk.

/home/ew/ruby/lib/rubygems/specification.rb:748:in `block in _resort!': undefined method `name' for nil:NilClass (NoMethodError)
        /home/ew/ruby/lib/rubygems/specification.rb:747:in `sort!'
        /home/ew/ruby/lib/rubygems/specification.rb:747:in `_resort!'
        /home/ew/ruby/lib/rubygems/specification.rb:699:in `_all'
        /home/ew/ruby/lib/rubygems/specification.rb:882:in `each'
        /home/ew/ruby/lib/rubygems/dependency.rb:284:in `find_all'
        /home/ew/ruby/lib/rubygems/dependency.rb:284:in `to_specs'
        /home/ew/ruby/lib/rubygems/dependency.rb:309:in `to_spec'
        /home/ew/ruby/lib/rubygems/core_ext/kernel_gem.rb:53:in `gem'
        /home/ew/ruby/lib/rubygems/package_task.rb:25:in `<top (required)>'
        /home/ew/ruby/lib/rubygems/core_ext/kernel_require.rb:55:in `require'
        /home/ew/ruby/lib/rubygems/core_ext/kernel_require.rb:55:in `require'
        /home/ew/ruby/test/rubygems/test_gem_package_task.rb:3:in `<top (required)>'
        /home/ew/ruby/lib/rubygems/core_ext/kernel_require.rb:55:in `require'
        /home/ew/ruby/lib/rubygems/core_ext/kernel_require.rb:55:in `require'
        /home/ew/ruby/lib/test/unit/parallel.rb:114:in `run'
        /home/ew/ruby/lib/test/unit/parallel.rb:183:in `<main>'

Some worker was crashed. It seems ruby interpreter's bug
or, a bug of test/unit/parallel.rb. try again without -j
option.




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