gocode 18.04 built with lib/go-1.9 instead of 1.10, no completion

[pb]

on 18.04, bionic, when using gocode there was no completion from the standard library. Apparently, the provided gocode was built with go 1.9 and installed is go 1.10. This can be reproduced by running

$ gocode close
$ gocode -s -debug
....
2018/08/15 06:17:51 Import path "fmt" was not resolved
2018/08/15 06:17:51 Gocode's build context is:
2018/08/15 06:17:51 GOROOT: /usr/lib/go-1.9
....

When running manually a manually installed version of gocode everything works fine. Probably, the distributed version of gocode should be rebuilt to match the installed go version.