Deleting a non-existing folder throws a fatal error

[alecpl]

Using Cyrus IMAP 3.6.6.

C: A0014 DELETE Folder/Test
S: * BYE Fatal error: Mailbox has been (re)moved

It should not cause BYE response.

cyrus-imapd/imap[3690]: command: A0014 Delete
cyrus-imapd/imap[3690]: Rename: kolab.org!user.jack.Folder.Test -> kolab.org!DELETED.user.jack.Folder.Test.66B692A7
cyrus-imapd/imap[3690]: Mailbox kolab.org!user.jack.Folder.Test has been (re)moved out from under client
cyrus-imapd/imap[3690]: Fatal error: Mailbox has been (re)moved
cyrus-imapd/master[1]: process type:SERVICE name:imap path:/usr/libexec/imapd age:99.868s pid:3690 exited, status 74

[elliefm]

I've created a Cassandane test (#5010) to try to reproduce this, but haven't yet been able to. I wonder if I haven't properly reproduced the circumstances? Or perhaps the issue comes from a Kolab patch.

The test first tries deleting some mailboxes that have never existed, then creates them, then deletes them for real, then tries deleting them again. The responses are all sane:

C: 4 delete Foo
S: 4 NO Mailbox does not exist
C: 5 delete Foo/bar
S: 5 NO Mailbox does not exist
C: 6 delete Foo/bar/baz
S: 6 NO Mailbox does not exist
C: 7 create Foo
S: 7 OK [MAILBOXID (2b7fd5f5-42c1-43d5-b603-93a80c8e08d3)] Completed
C: 8 create Foo/bar
S: 8 OK [MAILBOXID (2713b0a9-3c47-494f-9500-0ba6175d66a1)] Completed
C: 9 create Foo/bar/baz
S: 9 OK [MAILBOXID (27b72a06-d965-4747-8b5f-4bb3b18f5f79)] Completed
C: 10 delete Foo/bar/baz
S: 10 OK Completed
C: 11 delete Foo/bar
S: 11 OK Completed
C: 12 delete Foo
S: 12 OK Completed
C: 13 delete Foo
S: 13 NO Mailbox does not exist
C: 14 delete Foo/bar
S: 14 NO Mailbox does not exist
C: 15 delete Foo/bar/baz
S: 15 NO Mailbox does not exist

If you're able to run Cassandane tests, can you able to apply this patch and see if the test passes or fails for you?