Error when multiple go packages exist in a folder

[iplay88keys]

We see an issue when running LicenseFinder against our codebase as we are pulling in a dependency that contains multiple go files with different packages in the same folder.

For reproducing the bug, here's the repo we are pulling in: https://github.com/docker/libcompose.
The folder that causes the error is: hack.

The error we see is:

$ license_finder report
can't load package: package ./src/github.com/docker/libcompose/hack: found packages main (inline_schema.go) and config (schema_template.go)`
/Users/<username>/.rbenv/versions/2.2.3/lib/ruby/gems/2.2.0/gems/license_finder-3.0.2/lib/license_finder/package_managers/go_workspace.rb:77:in `block in go_list': go list failed (RuntimeError)

[kdykeman]

I'm able to reproduce this as of commit 59e2330

[kdykeman]

Digging a bit, it seems that Golang code shouldn't have multiple packages in a single directory. I opened issue #499 in the libcompose repo. I'll look around for something that might allow LF to handle this condition a bit more gracefully.