Add unused linter.

Signed-off-by: Daniel Nephin <dnephin@docker.com>

cli/command/container/stats_helpers.go

@@ -16,9 +16,8 @@ import (
 )
 
 type stats struct {
-	ostype string
-	mu     sync.Mutex
-	cs     []*formatter.ContainerStats
+	mu sync.Mutex
+	cs []*formatter.ContainerStats
 }
 
 // daemonOSType is set once we have at least one stat for a container

cli/command/formatter/disk_usage.go

@@ -234,7 +234,6 @@ func (c *diskUsageImagesContext) Reclaimable() string {
 
 type diskUsageContainersContext struct {
 	HeaderContext
-	verbose    bool
 	containers []*types.Container
 }
 
@@ -297,7 +296,6 @@ func (c *diskUsageContainersContext) Reclaimable() string {
 
 type diskUsageVolumesContext struct {
 	HeaderContext
-	verbose bool
 	volumes []*types.Volume
 }
 

cli/command/formatter/reflect_test.go

@@ -12,7 +12,7 @@ func (d *dummy) Func1() string {
 	return "Func1"
 }
 
-func (d *dummy) func2() string {
+func (d *dummy) func2() string { // nolint: unused
 	return "func2(should not be marshalled)"
 }
 

cli/command/image/pull_test.go

@@ -6,24 +6,17 @@ import (
 	"io/ioutil"
 	"testing"
 
-	"github.com/docker/cli/cli/command"
 	"github.com/docker/cli/cli/internal/test"
-	"github.com/docker/distribution/reference"
-	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/pkg/testutil"
 	"github.com/docker/docker/pkg/testutil/golden"
-	"github.com/docker/docker/registry"
 	"github.com/stretchr/testify/assert"
-	"golang.org/x/net/context"
 )
 
 func TestNewPullCommandErrors(t *testing.T) {
 	testCases := []struct {
-		name            string
-		args            []string
-		expectedError   string
-		trustedPullFunc func(ctx context.Context, cli command.Cli, repoInfo *registry.RepositoryInfo, ref reference.Named,
-			authConfig types.AuthConfig, requestPrivilege types.RequestPrivilegeFunc) error
+		name          string
+		args          []string
+		expectedError string
 	}{
 		{
 			name:          "wrong-args",
@@ -57,10 +50,8 @@ func TestNewPullCommandErrors(t *testing.T) {
 
 func TestNewPullCommandSuccess(t *testing.T) {
 	testCases := []struct {
-		name            string
-		args            []string
-		trustedPullFunc func(ctx context.Context, cli command.Cli, repoInfo *registry.RepositoryInfo, ref reference.Named,
-			authConfig types.AuthConfig, requestPrivilege types.RequestPrivilegeFunc) error
+		name string
+		args []string
 	}{
 		{
 			name: "simple",

cli/command/image/push_test.go

@@ -7,15 +7,11 @@ import (
 	"strings"
 	"testing"
 
-	"github.com/docker/cli/cli/command"
 	"github.com/docker/cli/cli/internal/test"
-	"github.com/docker/distribution/reference"
 	"github.com/docker/docker/api/types"
 	"github.com/docker/docker/pkg/testutil"
-	"github.com/docker/docker/registry"
 	"github.com/pkg/errors"
 	"github.com/stretchr/testify/assert"
-	"golang.org/x/net/context"
 )
 
 func TestNewPushCommandErrors(t *testing.T) {
@@ -60,11 +56,8 @@ func TestNewPushCommandErrors(t *testing.T) {
 
 func TestNewPushCommandSuccess(t *testing.T) {
 	testCases := []struct {
-		name            string
-		args            []string
-		trustedPushFunc func(ctx context.Context, cli command.Cli, repoInfo *registry.RepositoryInfo,
-			ref reference.Named, authConfig types.AuthConfig,
-			requestPrivilege types.RequestPrivilegeFunc) error
+		name string
+		args []string
 	}{
 		{
 			name: "simple",

cli/command/node/opts.go

@@ -11,7 +11,6 @@ type nodeOptions struct {
 }
 
 type annotations struct {
-	name   string
 	labels opts.ListOpts
 }
 

cli/command/registry/login.go

@@ -16,7 +16,6 @@ type loginOptions struct {
 	serverAddress string
 	user          string
 	password      string
-	email         string
 }
 
 // NewLoginCommand creates a new `docker login` command

cli/command/swarm/unlock_test.go

@@ -19,7 +19,6 @@ func TestSwarmUnlockErrors(t *testing.T) {
 	testCases := []struct {
 		name            string
 		args            []string
-		input           string
 		swarmUnlockFunc func(req swarm.UnlockRequest) error
 		infoFunc        func() (types.Info, error)
 		expectedError   string

cli/compose/loader/loader_test.go

@@ -632,10 +632,6 @@ func durationPtr(value time.Duration) *time.Duration {
 	return &value
 }
 
-func int64Ptr(value int64) *int64 {
-	return &value
-}
-
 func uint64Ptr(value uint64) *uint64 {
 	return &value
 }

dockerfiles/Dockerfile.lint

@@ -7,5 +7,6 @@ RUN     go get -u gopkg.in/alecthomas/gometalinter.v1 && \
         gometalinter --install
 
 WORKDIR /go/src/github.com/docker/cli
+ENV     CGO_ENABLED=0
 ENTRYPOINT ["/usr/local/bin/gometalinter"]
-CMD ["--config=gometalinter.json", "./..."]
+CMD     ["--config=gometalinter.json", "./..."]

gometalinter.json

@@ -1,6 +1,6 @@
 {
   "Vendor": true,
-  "Deadline": "2m",
+  "Deadline": "3m",
   "Sort": ["linter", "severity", "path"],
   "Exclude": ["cli/compose/schema/bindata.go"],
 
@@ -14,6 +14,7 @@
     "ineffassign",
     "interfacer",
     "lll",
+    "unused",
     "vet"
   ],