The go command now understands //go:build lines and prefers them over // +build lines. The new syntax uses boolean expressions, just like Go, and should be less error-prone. As of this release, the new syntax is fully supported, and all Go files should be updated to have both forms with the same meaning. To aid in migration, gofmt now automatically synchronizes the two forms. For more details on the syntax and migration plan, see https://golang.org/design/draft-gobuild.
Otherwise we had an issue where the file existed with the correct
owner/group; when we rewrote it we set the owner/group to root/root;
but we then didn't set the owner/group if they were previously
correct.
Was visible in the flatcar test results.
We don't call klog.InitFlags yet, because that will cause a flag
redefinition error until we get everyone to stop using glog. That
will happen when we update to k8s 1.13.
When try `make govet` on `go1.11beta1`. It complains many things
related to invalid string formatting:
```
pkg/kubemanifest/visitor.go:35: Verbose.Infof format %s has arg v of wrong type bool
pkg/kubemanifest/visitor.go:40: Verbose.Infof format %s has arg v of wrong type float64
upup/pkg/fi/cloudup/alitasks/disk.go:76: Verbose.Info call has possible formatting directive %q
upup/pkg/fi/cloudup/alitasks/disk.go:91: Verbose.Info call has possible formatting directive %q
upup/pkg/fi/cloudup/alitasks/launchconfiguration.go:89: Verbose.Info call has possible formatting directive %q
upup/pkg/fi/cloudup/alitasks/loadbalancer.go:71: Verbose.Info call has possible formatting directive %q
upup/pkg/fi/cloudup/alitasks/loadbalancer.go:125: Verbose.Info call has possible formatting directive %q
upup/pkg/fi/cloudup/alitasks/scalinggroup.go:71: Verbose.Info call has possible formatting directive %q
dns-controller/pkg/dns/dnscontroller.go:603: Verbose.Infof format %s has arg records of wrong type []dns.Record
dns-controller/cmd/dns-controller/main.go:184: Verbose.Info call has possible formatting directive %q
pkg/acls/s3/storage.go:62: Verbose.Infof format %q arg u.String is a func value, not called
pkg/apis/kops/validation/validation_test.go:199: T.Fatalf format %q has arg config of wrong type *k8s.io/kops/pkg/apis/kops.DockerConfig
pkg/resources/aws/aws.go:1306: Warning call has possible formatting directive %q
pkg/resources/aws/aws.go:1313: Warning call has possible formatting directive %v
upup/pkg/fi/cloudup/aliup/ali_cloud.go:218: Verbose.Info call has possible formatting directive %q
upup/pkg/fi/cloudup/aliup/ali_cloud.go:290: Verbose.Info call has possible formatting directive %q
upup/pkg/fi/fitasks/keypair.go:266: Errorf format %q has arg e.Name of wrong type *string
upup/pkg/fi/files_owner.go:56: Infof format %s has arg group of wrong type *fi.Group
upup/pkg/fi/users.go:57: Warning call has possible formatting directive %q
upup/pkg/fi/users.go:63: Warning call has possible formatting directive %q
upup/pkg/fi/users.go:68: Warning call has possible formatting directive %q
upup/pkg/fi/users.go:129: Warning call has possible formatting directive %q
upup/pkg/fi/users.go:135: Warning call has possible formatting directive %q
upup/pkg/fi/nodeup/nodetasks/file.go:313: Errorf format %q has arg e.Mode of wrong type *string
upup/pkg/fi/cloudup/awsup/aws_cloud.go:1021: Warningf format %q reads arg #2, but call has 1 arg
upup/pkg/fi/cloudup/awsup/aws_cloud.go:1025: Warningf format %q reads arg #2, but call has 1 arg
```
Ciprian Hacman