Due to a bug in the python set-up code, a non-negligible number of events got sent with the following release string:
foo-bar@<module 'foobar.__version__' from '/app/foobar/__version__.py'>
(There’s been a confusion regarding str() and python’s import mechanisms 
)
In any case, I cannot access the release at all through the Web UI (I simply get an “There was an error loading data.” error), and when I try to delete it through the cli:
$ sentry-cli releases delete "foo-bar@<module 'foobar.__version__' from '/app/foobar/__version__.py'>"
error: Invalid value for '<VERSION>': Invalid release version. Slashes and certain whitespace characters are not permitted.
What now?