解决吊床导入周期

How do I go about resolving an import cycle between github.com/golang/mock/gomock and golang.org/x/net/context? As far as I can tell this cycle exists internally between the two package and I can't modify either of them internally.

Currently these are my imports:

import (
    "testing"
    "github.com/golang/mock/gomock"
    "gopkg.in/mgo.v2" //mock
    "gopkg.in/mgo.v2/bson"
)

And this is the exact error message I am receiving when running withmock go test:

ERROR: Failed to install 'gopkg.in/mgo.v2': exit status 1
output:
import cycle not allowed
package gopkg.in/mgo.v2
    imports github.com/golang/mock/gomock
    imports golang.org/x/net/context
    imports github.com/golang/mock/gomock