main: show microseconds in go-fuse logs

Suppress the date but show microseconds in fuse debug logs
(-fusedebug) and go-fuse warnings.

main.go

@@ -161,6 +161,8 @@ func main() {
 	if os.Getenv("PATH") == "" {
 		os.Setenv("PATH", "/usr/sbin:/usr/bin:/sbin:/bin")
 	}
+	// Show microseconds in go-fuse debug output (-fusedebug)
+	log.SetFlags(log.Lmicroseconds)
 	var err error
 	// Parse all command-line options (i.e. arguments starting with "-")
 	// into "args". Path arguments are parsed below.

mount.go

@@ -347,7 +347,7 @@ func initGoFuse(rootNode fs.InodeEmbedder, args *argContainer) *fuse.Server {
 	}
 	fuseOpts.NullPermissions = true
 	// Enable go-fuse warnings
-	fuseOpts.Logger = log.New(os.Stderr, "go-fuse: ", 0)
+	fuseOpts.Logger = log.New(os.Stderr, "go-fuse: ", log.Lmicroseconds)
 	fuseOpts.MountOptions = fuse.MountOptions{
 		// Writes and reads are usually capped at 128kiB on Linux through
 		// the FUSE_MAX_PAGES_PER_REQ kernel constant in fuse_i.h. Our