go test ./... and make build fails differently

[rakyll]

When I run go test ./... on the top directory of this repo, it seems to be skipping some packages thus make build and go test fail differently.

It confused me as a new contributor. I opened a few PRs after just running go test and the CI failed. I don't have time to investigate this (and don't know if it's a reasonable ask) but it would be great if go test was working as expected.

[Aneurysm9]

This seems to relate to this Go issue which seems to acknowledge that the behavior of go test ./... may be unanticipated when multiple modules live in a single repo, but is the intended behavior. Would additional documentation of the necessity of using make test over go test ./... in our CONTRIBUTING.md help address this issue?

[rakyll]

Documenting sounds great, sending a PR.