cf-push-err.log

2015-07-10T13:54:12.47-0500 [STG]     OUT Staging failed: Buildpack compilation step failed
2015-07-10T14:07:34.95-0500 [DEA]     OUT Got staging request for app with id fa3d174b-073e-4faa-9b94-1c53f6a36fe3
2015-07-10T14:07:36.27-0500 [STG]     OUT -----> Downloaded app package (3.2M)
2015-07-10T14:07:36.36-0500 [STG]     ERR Cloning into '/tmp/buildpacks/heroku-buildpack-ruby'...
2015-07-10T14:07:37.48-0500 [STG]     OUT Submodule 'compile-extensions' (https://github.com/cloudfoundry-incubator/compile-extensions) registered for path 'compile-extensions'
2015-07-10T14:07:37.53-0500 [STG]     ERR Cloning into 'compile-extensions'...
2015-07-10T14:07:37.81-0500 [STG]     OUT Submodule path 'compile-extensions': checked out 'ce9345a9a6e7b00266194cadd18dbef37e791a7b'
2015-07-10T14:07:37.89-0500 [STG]     ERR It looks like you're deploying on a stack (currently set to *lucid64*) that's not supported by this buildpack.
2015-07-10T14:07:37.89-0500 [STG]     ERR That could be because you're using a recent buildpack release on a deprecated stack.
2015-07-10T14:07:37.89-0500 [STG]     ERR If you're using the buildpack installed by your CF admin, please let your admin know you saw this error message.
2015-07-10T14:07:37.89-0500 [STG]     ERR If you at one point specified a buildpack that's at git URL, please make sure you're pointed at a version that supports this stack.