"Print traceback" does nothing when the exception occurred in a test

[maxrothman]

Steps to reproduce:

• Run a test that throws an exception using Calva's test-running features (e.g. Run Current Test)
• The test fails, and the short form of the exception is printed to the REPL output buffer (repl.calva-repl). A "Print traceback" button is rendered.
• Click the "Print traceback" button

Expected behavior: the traceback is printed

Actual behavior: nothing happens

Also, the exception is not bound to *e. This may be a reasonable approach (what would you bind to *e if multiple tests failed?), but since Calva does not print ex-data, it makes it difficult to debug such exceptions.