TimSimpsonR/reddwarf — comment on commit db09be7cda6e6344695a7d69585ee135f87e5d9e
File: integration/tests/util/check.py line 48
By TimSimpsonR:

For each assertion failure, it gets a big string with the stacktrace and the error message. At the end (in __exit__) if there's anything that went wrong it raises an assertion error with a string containing every single failure.

To tell the failures apart, each one has an alternating prefix. This value toggles the prefix.