Error using Godep on Travis CI automated build for tip version of Go

I'm using Travis CI to automate builds and tests on my Go project.

The ./Godeps/Godeps.json looks like this :

{
	"ImportPath": "github.com/my_project_path",
	"GoVersion": "go1.5",
	"Packages": [
		"./..."
	],
	"Deps": [
		{
			"ImportPath": "github.com/Sirupsen/logrus",
			"Comment": "v0.8.7-53-g446d1c1",
			"Rev": "446d1c146faa8ed3f4218f056fcd165f6bcfda81"
		}
	]
}

The .travis.yml file looks like this :

language: go

go: 
 - 1.3.3
 - 1.4.2
 - 1.5.1
 - release
 - tip

before_install:
 - go get github.com/my_project_path
 - go get github.com/tools/godep

install:
 - godep restore

script:
 - go test -v ./...

All other builds work except for tip because of go version.

The last few lines of the Travis CI log for tip are :

$ go version

go version devel +e4dcf5c Thu Dec 24 06:55:33 2015 +0000 linux/amd64
go.env

$ go env

GOARCH="amd64"

GOBIN=""

GOEXE=""

GOHOSTARCH="amd64"

GOHOSTOS="linux"

GOOS="linux"

GOPATH="/home/travis/gopath"

GORACE=""

GOROOT="/home/travis/.gimme/versions/go"

GOTOOLDIR="/home/travis/.gimme/versions/go/pkg/tool/linux_amd64"

GO15VENDOREXPERIMENT="1"

CC="gcc"

GOGCCFLAGS="-fPIC -m64 -pthread -fmessage-length=0"

CXX="g++"

CGO_ENABLED="1"
before_install.1

3.52s$ go get github.com/my_project_path
before_install.2

3.34s$ go get github.com/tools/godep

0.02s$ godep restore

godep: Error determing major go version from: "devel"

The command "godep restore" failed and exited with 1 during .

Your build has been stopped.

How can I fix this? Am I just stuck with using go get ./...?

EDIT: It seems someone made a pull request to fix this.

EDIT2: Seems the pull request was merged. Will test if it's fixed soonish.

So I asked this question on December 24 2015.

On December 29 2015, github user zchee opened a pull request that fixed the issue mentioned in my question.

On January 4 2016, the pull request was merged into the master branch of godep. So essentially the issue is now fixed and in order for Travis CI to use godep restore and test your project against the tip version of Go, your .travis.yml file should look like it does in the question, i.e.:

language: go

go: 
 - 1.3.3
 - 1.4.2
 - 1.5.1
 - release
 - tip

before_install:
 - go get github.com/my_project_path
 - go get github.com/tools/godep

install:
 - godep restore

script:
 - go test -v ./...