Repeated prompts to upgrade the environment

[rjollos]

2011-01-10 09:37:21,232 Trac[env] WARNING: Component
<tracmetrixplugin.api.TracMetrixSetupParticipant object at 0x921e92c>
requires environment upgrade
2011-01-10 09:37:21,232 Trac[env] WARNING: Component
<tracmetrixplugin.api.TracMetrixSetupParticipant object at 0x921e92c>
requires environment upgrade
2011-01-10 09:37:21,232 Trac[env] WARNING: Component
<tracmetrixplugin.api.TracMetrixSetupParticipant object at 0x921e92c>
requires environment
upgrade
2011-01-10 09:37:21,232 Trac[env] WARNING: Component
<tracmetrixplugin.api.TracMetrixSetupParticipant object at 0x921e92c>
requires environment
upgrade

After running upgrade, I get message "Database is up to date, no
upgrade necessary"

[rjollos]

(In [9751]) Added exception handling for case that creating cache directory fails when running trac-admin $ENV upgrade. Refs #8384.

[rjollos]

(In [9752]) Made exception handling compatible with Python 2.5. Refs #8384.

[rjollos]

The issue with [9751] not being compatible with Python 2.5 is described ​here.

[jaosvi]

I manually created the <TRACENV>/cache/tracmetrixplugin folder, and now the plugin appears in the Trac Webadmin panel under Plugins. Also, the Metrics sheet is now available!

[rjollos]

At this point it is unclear if the issues experienced were a local configuration problem or a plugin problem, but with the changes made in [9750:9752] we should be able to better diagnose any similar issues that occur in the future.