$ git sync e104082
$ go build ./go/packages/gopackages
$ PATH=$HOME/go1.10/bin ./gopackages -test fmt
Go package "fmt": ...
Go package "fmt [fmt.test]": ...
Go package "fmt_test [fmt.test]":
        package fmt_test
        has no exported type info
        file /usr/local/google/home/adonovan/go1.10/src/fmt/example_test.go
        file /usr/local/google/home/adonovan/go1.10/src/fmt/fmt_test.go
        file /usr/local/google/home/adonovan/go1.10/src/fmt/scan_test.go
        file /usr/local/google/home/adonovan/go1.10/src/fmt/stringer_test.go
        import "bufio"
        import "bytes"
        import "errors"
        import "fmt [fmt.test]"  # should say "fmt" => "fmt [fmt.test]"
        ...
        import "testing" # should say: import "testing" => "testing [fmt.test]"
        import "testing/iotest" # should say: import "testing/iotest" => "testing/iotest [fmt.test]"
        ...