trial writes warnings to stdout

[exarkun]

This is weird because the default for warnings is to end up on stderr.

Another problem with this code is that it allows warnings to mess up the formatting done by the reporter. The runner really shouldn't be writing things to stdout, only the reporter should do that.

[exarkun]

(In [22777]) Ignore warnings logged in test_stdout

Refs #2941 Refs #3070

:(

[glyph]

Duplicate of #2820.

[Julian]

#2820 is closed, but this appears to still be true?

[glyph]

#2820 was really about the use of print as opposed to untilConcludes, not stdout vs. stderr.

I believe that trial ought to keep its current behavior because, as a testing tool, warnings are part of trial's useful output, they're not ancillary information. In fact, most warnings are suppressed in Python, not written to stderr, and Trial explicitly turns them back on in order to associate them with a particular test case.

[glyph]

Since we're trying to refer to something more productive whenever we close a ticket, I was about to refer you to the ticket for making trial turn on warnings in python 2.7, but it looks like you've found it already. Thanks for working on it :).