Plugin logging missing output

[mitchellh]

Currently, the plugin output is missing some log data. For example, in the output below, it should output "Serving connection" or something like that at some point but it never does. WAT?!

This will be critical to investigate and fix. I have no ideas.

packer master → bin/packer
usage: packer [--version] [--help] <command> [<args>]

Available commands are:
2013/05/08 12:44:00 /Users/mitchellh/code/go/src/github.com/mitchellh/packer/packer.go:28: Loading command: build
2013/05/08 12:44:00 /Users/mitchellh/code/go/src/github.com/mitchellh/packer/packer/plugin/client.go:168: 2013/05/08 12:44:00 Preparing to serve a command plugin...
2013/05/08 12:44:00 /Users/mitchellh/code/go/src/github.com/mitchellh/packer/packer/plugin/client.go:168: 2013/05/08 12:44:00 Plugin minimum port: 10000
2013/05/08 12:44:00 /Users/mitchellh/code/go/src/github.com/mitchellh/packer/packer/plugin/client.go:168: 2013/05/08 12:44:00 Plugin maximum port: 10000
2013/05/08 12:44:00 /Users/mitchellh/code/go/src/github.com/mitchellh/packer/packer/plugin/client.go:168: 2013/05/08 12:44:00 Plugin address: :10000
2013/05/08 12:44:00 /Users/mitchellh/code/go/src/github.com/mitchellh/packer/packer/plugin/client.go:168: 2013/05/08 12:44:00 Waiting for connection...
    build     build image(s) from tempate
2013/05/08 12:44:00 /Users/mitchellh/code/go/src/github.com/mitchellh/packer/packer/plugin/client.go:41: waiting for all plugin processes to complete...
2013/05/08 12:44:00 /Users/mitchellh/go/src/pkg/net/rpc/client.go:145: rpc: client protocol error: unexpected EOF
2013/05/08 12:44:00 /Users/mitchellh/code/go/src/github.com/mitchellh/packer/packer/plugin/client.go:95: plugin process exited
2013/05/08 12:44:00 /Users/mitchellh/code/go/src/github.com/mitchellh/packer/packer/plugin/client.go:168: 2013/05/08 12:44:00 Preparing to serve a command pl

[mitchellh]

If I redirect the logger to a file from the plugin, it comes out fine:

packer master → cat /tmp/what
2013/05/08 12:47:10 Preparing to serve a command plugin...
2013/05/08 12:47:10 Plugin minimum port: 10000
2013/05/08 12:47:10 Plugin maximum port: 10000
2013/05/08 12:47:10 Plugin address: :10000
2013/05/08 12:47:10 Waiting for connection...
2013/05/08 12:47:10 Serving a plugin connection...

[mitchellh]

Fixed it with the above commit but really unsure why.