make
>> checking code style
>> checking license header
>> running golangci-lint
GO111MODULE=on go list -e -compiled -test=true -export=false -deps=true -find=false -tags= -- ./... > /dev/null
GO111MODULE=on /Users/alex/go/bin/golangci-lint run  ./...
collector/sysctl_bsd.go:52:2: `valueType` is unused (structcheck)
	valueType prometheus.ValueType
	^
collector/paths.go:38:6: `rootfsFilePath` is unused (deadcode)
func rootfsFilePath(name string) string {
     ^
collector/diskstats_common.go:54:2: `ioTimeSecondsDesc` is unused (deadcode)
	ioTimeSecondsDesc = prometheus.NewDesc(
	^
collector/helper.go:22:6: `readUintFromFile` is unused (deadcode)
func readUintFromFile(path string) (uint64, error) {
     ^
collector/filesystem_bsd.go:43:82: SA4000: identical expressions on the left and right side of the '==' operator (staticcheck)
	count := C.getmntinfo(&mntbuf, C.MNT_NOWAIT)
	                                            ^
collector/filesystem_common.go:54:30: U1000: field `options` is unused (unused)
	device, mountPoint, fsType, options string
	                            ^
collector/paths.go:27:2: U1000: var `rootfsPath` is unused (unused)
	rootfsPath = kingpin.Flag("path.rootfs", "rootfs mountpoint.").Default("/").String()
	^
make: *** [common-lint] Error 1