Golang供应商未检测到

I git cloned this specific repo https://github.com/evnix/boltdbweb into my environment in $GOPATH/src/somesetofpaths

I also ran go get on the dependencies, but with this specific dependency

go get github.com/boltdb/bolt/...

I want it in vendor rather than src/github.com/...

But when I run go build, I'm getting ../../../github.com/evnix/boltdbweb/web/index.go:6:2: cannot find package "github.com/boltdb/bolt" in any of: /opt/homebrew/Cellar/go/1.6.2/libexec/src/github.com/boltdb/bolt (from $GOROOT) $GOPATH/src/github.com/boltdb/bolt (from $GOPATH)

meaning it's not looking in the vendor directory.

The thing is... it's only this package that's not looking in vendor. I have other projects in $GOPATH/src/someproject1/ , $GOPATH/src/someproject2/ that are building properly using code in $GOPATH/src/vendor. What am I missing?

This is my go env

GOARCH="amd64"
GOBIN=""
GOEXE=""
GOHOSTARCH="amd64"
GOHOSTOS="darwin"
GOOS="darwin"
GOPATH=(omitted)
GORACE=""
GOROOT="/opt/homebrew/Cellar/go/1.6.2/libexec"
GOTOOLDIR="/opt/homebrew/Cellar/go/1.6.2/libexec/pkg/tool/darwin_amd64"
GO15VENDOREXPERIMENT="1"
CC="clang"
GOGCCFLAGS="-fPIC -m64 -pthread -fno-caret-diagnostics -Qunused-arguments -fmessage-length=0 -fno-common"
CXX="clang++"
CGO_ENABLED="1"