Yesterday I made my 40th or 50th deployment of a Symfony2 system on a server. Everything fine so far. Today I get a nasty error. This is what happens:
 * executing `symfony:cache:warmup'
 * executing "cd /NFS2/oa_sf2/releases/20111214182506 && php app/console cache:warmup --env=prod"
    servers: ["151.1.111.19"]
    [151.1.111.19] executing command
 ** [out :: 151.1.111.19] Warming up the cache
 ** [out :: 151.1.111.19] 
 ** [out :: 151.1.111.19] 
 ** [out :: 151.1.111.19] 
 ** [out :: 151.1.111.19] [RuntimeException]
 ** [out :: 151.1.111.19] Error creating output file.
 ** [out :: 151.1.111.19] 
 ** [out :: 151.1.111.19] 
 ** [out :: 151.1.111.19] 
 ** [out :: 151.1.111.19] cache:warmup
 ** [out :: 151.1.111.19] 
 ** [out :: 151.1.111.19] 
    command finished
*** [deploy:update_code] rolling back
- No chance for further investigation into the cache folder because the whole code tree gets removed on rollback
 - We know Capistrano features some way to disable the rollback but still we'd like to try understanding with no access on remote server - it must be something on our side, since yesterday it was all OK
 - No change was made on the deployment user's read/write/execute rights
 
Please any suggestion on how to bring investigation forward? Thanks a lot.
p.s. no similar question on Stacktrace addresses this peculiar issue.