tests: Exception in "compose mail from draft"

[romanofski]

Describe the bug
Saw this failure in our acceptance tests:

  compose mail from draft:                                  FAIL
    Exception: /tmp/purebredtest-265167ea34bba8a5/Maildir/.notmuch/xapian/v.tmp: removeDirectoryRecursive:removeContentsRecursive:removePathRecursive:removeContentsRecursive:removePathRecursive:removeContentsRecursive:removePathRecursive:getSymbolicLinkStatus: does not exist (No such file or directory)

First time I saw it and have no idea what might have gone wrong.

To Reproduce
None

Expected behavior
passing tests

Screenshots
None

Additional context
None