dep ensure freezes when running inside a linked directory

[hectorj2f]

How to reproduce it?
1 - Create a soft link directory to a directory with your Gopkg.* files.
2- You have to cd through this linked directory.
3- Run dep ensure

Version of dep:

dep:
 version     : devel
 build date  :
 git hash    :
 go version  : go1.9.2
 go compiler : gc
 platform    : linux/amd64

Content of Gopkg.toml:

[[constraint]]
  name = "github.com/opencontainers/runc"
  version = "v1.0.0-rc4"

[sdboyer]

dep has only minimal support for symlinks - see the FAQ. note that some of what we describe there isn't quite accurate, per #1146.

(closing as dup of that issue)