The go vet integration with go test looks interesting. I'm currently using github.com/surullabs/lint [1] to run vet and a few other lint tools as part of go test. It provides a nice increase in productivity for my dev cycle. Having vet + other lint tools integrated into my dev+test cycle has caught a number of bugs before they hit CI.

[1] https://github.com/surullabs/lint

Disclaimer: I'm the author of the above library.