"fail" is a keyword and while *technically* "fail?" is a valid method
name it's a bit confusing.

Naming things "fail" and "ok" isn't consistent with our user facing
"FAILED" and "PASSED" verbiage. It might as well be the same, that way
it's less confusing as time goes on.

For example:

I am a rockstar developer
I want to be able to run my build multiple times for a given commit
Because sometimes environment failures happen and builds really mean
"green" when they say "red"

Before this commit, any failure broke the build until the next code
commit. This was a bit silly.

By default now, $ bt-go runs all stages again.

To be added to as we all become less lazy about docs. (What was that? I
was too busy wailing on my electric guitar to write docs?...)

Actually this *must* have been why cloning bt takes forever.