在我升級(jí)到 Go 1.4 后，godef不再在標(biāo)準(zhǔn)庫中找到很多東西，例如Testing.Fatalf.當(dāng)我嘗試時(shí)go get -u，我收到以下錯(cuò)誤：package code.google.com/p/goplan9/plan9/acme    imports code.google.com/p/goplan9/plan9/acme    imports code.google.com/p/goplan9/plan9/acme: cannot find package "code.google.com/p/goplan9/plan9/acme" in any of:    /Users/bryan/local/go/src/code.google.com/p/goplan9/plan9/acme (from $GOROOT)    /Users/bryan/sweng/oms/src/code.google.com/p/goplan9/plan9/acme (from $GOPATH)