[DRE-maint] Bug#952036: ruby-fakefs: FTBFS: ERROR: Test "ruby2.7" failed: NoMethodError: undefined method `[]=' for nil:NilClass

[Lucas Nussbaum]

Source: ruby-fakefs
Version: 0.20.1-1
Severity: serious
Justification: FTBFS on amd64
Tags: buster sid
Usertags: ftbfs-20200222 ftbfs-buster

Hi,

During a rebuild of all packages in sid, your package failed to build
on amd64.

Relevant part (hopefully):
> NoMethodError: undefined method `[]=' for nil:NilClass
>     /usr/lib/ruby/2.7.0/tempfile.rb:128:in `block in initialize'
>     /<<PKGBUILDDIR>>/lib/fakefs/dir.rb:210:in `create'
>     /usr/lib/ruby/2.7.0/tempfile.rb:127:in `initialize'
>     /usr/lib/ruby/2.7.0/tempfile.rb:287:in `new'
>     /usr/lib/ruby/2.7.0/tempfile.rb:287:in `open'
>     /usr/lib/ruby/vendor_ruby/minitest/assertions.rb:67:in `diff'
>     /usr/lib/ruby/vendor_ruby/minitest/assertions.rb:217:in `block in assert_equal'
>     /usr/lib/ruby/vendor_ruby/minitest/assertions.rb:602:in `block in message'
>     /usr/lib/ruby/vendor_ruby/minitest/assertions.rb:182:in `assert'
>     /usr/lib/ruby/vendor_ruby/minitest/assertions.rb:218:in `assert_equal'
>     /<<PKGBUILDDIR>>/test/fakefs_test.rb:1764:in `block in test_file_utils_cp_allows_verbose_option'
>     /<<PKGBUILDDIR>>/test/fakefs_test.rb:35:in `perform_with_both_string_paths_and_pathnames'
>     /<<PKGBUILDDIR>>/test/fakefs_test.rb:1762:in `test_file_utils_cp_allows_verbose_option'
>     /usr/lib/ruby/vendor_ruby/minitest/test.rb:98:in `block (3 levels) in run'
>     /usr/lib/ruby/vendor_ruby/minitest/test.rb:195:in `capture_exceptions'
>     /usr/lib/ruby/vendor_ruby/minitest/test.rb:95:in `block (2 levels) in run'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:270:in `time_it'
>     /usr/lib/ruby/vendor_ruby/minitest/test.rb:94:in `block in run'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:365:in `on_signal'
>     /usr/lib/ruby/vendor_ruby/minitest/test.rb:211:in `with_info_handler'
>     /usr/lib/ruby/vendor_ruby/minitest/test.rb:93:in `run'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:1029:in `run_one_method'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:339:in `run_one_method'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:326:in `block (2 levels) in run'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:325:in `each'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:325:in `block in run'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:365:in `on_signal'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:352:in `with_info_handler'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:324:in `run'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:164:in `block in __run'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:164:in `map'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:164:in `__run'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:141:in `run'
>     /usr/lib/ruby/vendor_ruby/minitest.rb:68:in `block in autorun'
> 
> 705 runs, 1414 assertions, 0 failures, 6 errors, 1 skips
> 
> You have skipped tests. Run with --verbose for details.
> rake aborted!
> Command failed with status (1)
> 
> Tasks: TOP => default => test
> (See full trace by running task with --trace)
> ERROR: Test "ruby2.7" failed: 

The full build log is available from:
   http://qa-logs.debian.net/2020/02/22/ruby-fakefs_0.20.1-1_unstable.log

A list of current common problems and possible solutions is available at
http://wiki.debian.org/qa.debian.org/FTBFS . You're welcome to contribute!

About the archive rebuild: The rebuild was done on EC2 VM instances from
Amazon Web Services, using a clean, minimal and up-to-date chroot. Every
failed build was retried once to eliminate random failures.