Most CI implementations like travis / circleci run the builds
containerised. This can lead to the situartion where many more
processors are detected via /proc/cpuinfo and friends than are actually
usable through resource limits enforced by the containerization.
This can result in high resource consumption that might
result in abnormal build termination.
The default can easily be overriden in your CI setup.
* http://fabiokung.com/2014/03/13/memory-inside-linux-containers/
* I dislike the global infection RSpec does. This commit is a first step
to get a rid of it.
* Also remove the need for `require 'spec_helper` in each spec file with
adjusting `.rspec`.
* I do not use 1.9.3
* Also keeping them in each file increases mental overhead (true it *can* be autoamted)
* None of the files encodes NON ASCII chars.
* I do not expect it makes any difference, since nobody programmatically
will consume strings generated by mutant under the assumption they are UTF-8 encoded.
* 1.9.3 Users have to deal with the encoding fuckup under ruby anyways.
* This specs still have spec per method granularity
* But one file specs multiple methods
* Compatible with mutant spec selector
* Deduplicates boilerplate unit setup
