[pkg-go] Bug#913254: golang-gopkg-juju-environschema.v1 build depends on golang-github-juju-schema-dev but it is not installable

[Adrian Bunk]

Source: golang-gopkg-juju-environschema.v1
Version: 0.0~git20151104.7359fc7-4
Severity: serious
Tags: ftbfs

The following packages have unmet dependencies:
 builddeps:golang-gopkg-juju-environschema.v1 : Depends: golang-github-juju-schema-dev but it is not installable

See #911002