goversion v1.2.0 fails to extract moduleinfo on 1.16.13 binary built via `go install`

[dnwe]

rsc.io/[email protected] fails to extract the module info in this scenario:

$ KURED_VERSION=1.9.1
$ GOBIN=$PWD
$ go install -ldflags "-X main.version=${KURED_VERSION}" \
    "github.com/weaveworks/kured/cmd/kured@${KURED_VERSION}"
$ goversion -m kured
kured go1.16.13
$

Obviously the built-in go version cmd in 1.16.13 can successfully extract the module info:

$ go version -m kured  | head -5
kured: go1.16.13
        path    github.com/weaveworks/kured/cmd/kured
        mod     github.com/weaveworks/kured     v0.0.0-20220106181305-2b36eab0f829      h1:gkiQx0LbROxAqRgcqLqO8dnKWWmbuHpOwwbOl9Numcc=
        dep     github.com/MakeNowJust/heredoc  v0.0.0-20170808103936-bb23615498cd      h1:sjQovDkwrZp8u+gxLtPgKGjk5hCxuy2hrRejBTA9xFU=
        dep     github.com/PuerkitoBio/purell   v1.1.1  h1:WEQqlqaGbrPkxLJWfBwQmfEAE1Z7ONdDLqrN38tNFfI=

And similarly if I use Filo Sottile's version that rewrites atop the internal/version pkg (https://github.com/rsc/goversion/pull/17) then that can also read it:

$ goversion -m kured  | head -5
kured go1.16.13
        path  github.com/weaveworks/kured/cmd/kured
        mod   github.com/weaveworks/kured                       v0.0.0-20220106181305-2b36eab0f829
        dep   github.com/MakeNowJust/heredoc                    v0.0.0-20170808103936-bb23615498cd
        dep   github.com/PuerkitoBio/purell                     v1.1.1