permission denied push error message is confusing

[Jeff Hill]

It seems that only certain paths are allowed when publishing a branch at launchpad. That's fine, but perhaps the resulting "Permission denied" error message is a bit confusing for the uninitiated.

>bzr push lp:~johill-lanl/epics-base/R3.15/ca-ref-man-maint
Connected (version 2.0, client Twisted)
Authentication (publickey) successful!
Secsh channel 1 opened.
bzr: ERROR: Permission denied: "~johill-lanl/epics-base/R3.15/ca-ref-man-maint/": : Cannot create branch at '/~johill-lanl/epics-base/R3.15/ca-ref-man-maint'

>bzr push lp:~johill-lanl/epics-base/ca-ref-man-maint
Connected (version 2.0, client Twisted)
Authentication (publickey) successful!
Secsh channel 1 opened.
Created new stacked branch referring to /~epics-core/epics-base/3.15.

[Andrew Bennetts (spiv)]

This is a problem for the server, Launchpad, rather than the client, so reassigning.

Launchpad already emits more helpful messages for permission denied in some other cases (e.g. try pushing to a branch like ~/no-such-project/foo), so I expect it can probably deal better with your case as well.