remote-backup.sh mysql-backups fails with EOFError

[php-coder]

Synchronizing remote metadata to local cache...
/usr/lib/python2.7/getpass.py:83: GetPassWarning: Can not control echo on the terminal.
  passwd = fallback_getpass(prompt, stream)
Warning: Password input may be echoed.
GnuPG passphrase for decryption: Traceback (most recent call last):
  File "/usr/bin/duplicity", line 1532, in <module>
    with_tempdir(main)
  File "/usr/bin/duplicity", line 1526, in with_tempdir
    fn()
  File "/usr/bin/duplicity", line 1380, in main
    do_backup(action)
  File "/usr/bin/duplicity", line 1401, in do_backup
    sync_archive(decrypt)
  File "/usr/bin/duplicity", line 1180, in sync_archive
    globals.gpg_profile.passphrase = get_passphrase(1, "sync")
  File "/usr/bin/duplicity", line 198, in get_passphrase
    pass1 = getpass_safe(_("GnuPG passphrase for decryption:") + " ")
  File "/usr/bin/duplicity", line 93, in getpass_safe
    return getpass.getpass(message)
  File "/usr/lib/python2.7/getpass.py", line 83, in unix_getpass
    passwd = fallback_getpass(prompt, stream)
  File "/usr/lib/python2.7/getpass.py", line 118, in fallback_getpass
    return _raw_input(prompt, stream)
  File "/usr/lib/python2.7/getpass.py", line 135, in _raw_input
    raise EOFError
EOFError

Regression after 9b6a82d (#1155)