The one failure is unrelated (that's the test_solve one), but it cancelled a bunch of test jobs.

Tests should be fixed by #14

Is this a change that any library that implements __array__ will have to make?

Is this a change that any library that implements __array__ will have to make?

Yes indeed - missing copy or dtype keywords from the __array__ signature will emit a UserWarning in 2.0, and will probably be a deprecation later.