Why does my ruby crash / segfault during tests?
I've read in places that it might have something to do with sqlite3, but my googling has yielded nothing helpful. Here is an example of the error: https://travis-ci.org/NullVoxPopuli/aeonvera/jobs/61047991
It seems to happen randomly - both on my machine, and on travis. So I end up having to re-run rspec until it passes - which is pretty annoying, as my test suite takes a couple minutes to run.
How is this caused? and how do I prevent it? It's kind of silly to have to be actively engaged with your CI to re-run specs until it passes.
I'm using sqlite3 to run all my specs in memory - which is a nice speed bonus, and also helps me make sure I'm not doing any db-specific queries (my production app uses pgsql)
Here is a link to my repo if anyone is curious: https://github.com/NullVoxPopuli/aeonvera
UPDATE
This isn't sqlite3 specific - it happens when using postgresql as well.
stacktrace
/home/preston/.rvm/gems/ruby-2.2.1/gems/activerecord-4.1.10/lib/active_record/connection_adapters/postgresql/database_statements.rb:128: [BUG] Segmentation fault at 0x000000000001d4
ruby 2.2.1p85 (2015-02-26 revision 49769) [x86_64-linux]
-- Control frame information -----------------------------------------------
c:0057 p:---- s:0311 e:000310 CFUNC :backtrace
c:0056 p:0009 s:0310 e:000309 RESCUE /home/preston/.rvm/gems/ruby-2.2.1/gems/activesupport-4.1.10/lib/active_support/notifications/instrumenter.rb:25
c:0055 p:0037 s:0307 e:000305 METHOD /home/preston/.rvm/gems/ruby-2.2.1/gems/activesupport-4.1.10/lib/active_support/notifications/instrumenter.rb:25
c:0054 p:0034 s:0300 e:000299 METHOD /home/preston/.rvm/gems/ruby-2.2.1/gems/activerecord-4.1.10/lib/active_record/connection_adapters/abstract_adapter.rb:378
c:0053 p:0014 s:0292 e:000291 METHOD /home/preston/.rvm/gems/ruby-2.2.1/gems/activerecord-4.1.10/lib/active_record/connection_adapters/postgresql/database_statement
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c:0051 p:0014 s:0283 e:000282 METHOD /home/preston/.rvm/gems/ruby-2.2.1/gems/activerecord-4.1.10/lib/active_record/connection_adapters/abstract/transaction.rb:114
c:0050 p:0009 s:0280 e:000279 METHOD /home/preston/.rvm/gems/ruby-2.2.1/gems/activerecord-4.1.10/lib/active_record/connection_adapters/abstract/database_statements.
c:0049 p:0018 s:0277 e:000276 RESCUE /home/preston/.rvm/gems/ruby-2.2.1/gems/activerecord-4.1.10/lib/active_record/connection_adapters/abstract/database_statements.
c:0048 p:0035 s:0274 e:000272 METHOD /home/preston/.rvm/gems/ruby-2.2.1/gems/activerecord-4.1.10/lib/active_record/connection_adapters/abstract/database_statements.
c:0047 p:0078 s:0267 e:000266 METHOD /home/preston/.rvm/gems/ruby-2.2.1/gems/activerecord-4.1.10/lib/active_record/connection_adapters/abstract/database_statements.
c:0046 p:0017 s:0263 e:000262 METHOD /home/preston/.rvm/gems/ruby-2.2.1/gems/activerecord-4.1.10/lib/active_record/transactions.rb:208
c:0045 p:0014 s:0262 E:001878 METHOD /home/preston/.rvm/gems/ruby-2.2.1/gems/activerecord-4.1.10/lib/active_record/transactions.rb:326
c:0044 p:0010 s:0256 e:000255 RESCUE
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c:0042 p:---- s:0221 e:000220 CFUNC :unlock
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c:0039 p:0012 s:0214 e:000213 BLOCK /home/preston/.rvm/gems/ruby-2.2.1/gems/activesupport-4.1.10/lib/active_support/backtrace_cleaner.rb:85 [FINISH]
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All the other information: http://pastebin.com/d6Tm13ww
You can try to step back in your git history until you have a state where it is stable. And from there introduce changes to isolate the 'bad' change.
Also, you should avoid using on sqlite3 even in tests. Tests should be as close to production as possible.
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