I just installed Go 1.6.4 and google-cloud-sdk 1.56.0.0 on osX.
When I attempt to run the local dev_server I get the following warning.
/Users/Bryan/go/src/googl
I'm using just the App Engine SDK for Go (1.9.54), not the Cloud SDK, but have the same problem [Goapp serve - Warning: There are too many files.
I solved it by moving large packages and repositories to vendor/ dir.
vendor/