specs are possibly broken

[costa]

I've opened a PR and described the problem there: #18
I have also verified my conclusion on another, more powerful docker machine.
This blocks me at the moment with my work on hyper-mesh.

[janbiedermann]

This is ruby specifically, see:
https://bugs.ruby-lang.org/issues/691
https://codedump.io/share/jcuvHuHfBsbF/1/forcing-quot0000quot-timezone-for-rfc2822-times-in-ruby
Setting the Timezone will eliminate the problem of +0000 -0000
for tests done in PR#40