setting '[ftpd]enabled = true' caused 'tahoe run' to fail silently

[davidsarah]

I added the following, taken from docs/frontends/FTP-and-SFTP.rst#configuring-ftp-access​, to a previously-working tahoe.cfg in order to enable the FTP frontend:

[ftpd]
enabled = true
port = tcp:8021:interface=127.0.0.1
accounts.file = private/ftp.accounts

then ran "path_to\bin\tahoe run ."

tahoe run exited immediately with no output. Commenting out enabled = true in the [ftpd] section allowed it to work again. The ftp.accounts file is working with SFTP.

This is on Windows Vista, using Tahoe v1.8.2. Running the test suite gives no test failures, and I've no reason to think that any of the dependencies are broken.