Fails to compile basic go app

[bithavoc]

remote: Compressing source files... done.
remote: Building source:
remote:
remote: -----> Go app detected
remote: -----> Checking Godeps/Godeps.json file.
remote: /app/tmp/buildpacks/go/bin/compile: line 113: test: /app/tmp/cache/go1.5: binary operator expected
remote: -----> Installing go1.5 darwin/amd64... tar (child): go1.5: Cannot open: No such file or directory
remote: tar (child): Error is not recoverable: exiting now
remote: tar: Child returned status 2
remote: tar: Error is not recoverable: exiting now
remote:
remote:  !     Push rejected, failed to compile Go app
remote:
remote: Verifying deploy....

[bithavoc]

my bad, was not using the latests godep with 1.5