Add more error handling

internal/restic/lock_unix.go

@@ -38,7 +38,9 @@ func (l Lock) processExists() bool {
 		debug.Log("error searching for process %d: %v\n", l.PID, err)
 		return false
 	}
-	defer proc.Release()
+	defer func() {
+		_ = proc.Release()
+	}()
 
 	debug.Log("sending SIGHUP to process %d\n", l.PID)
 	err = proc.Signal(syscall.SIGHUP)

internal/restic/node_linux.go

@@ -15,7 +15,6 @@ func (node Node) restoreSymlinkTimestamps(path string, utimes [2]syscall.Timespe
 	if err != nil {
 		return errors.Wrap(err, "Open")
 	}
-	defer dir.Close()
 
 	times := []unix.Timespec{
 		{Sec: utimes[0].Sec, Nsec: utimes[0].Nsec},
@@ -25,10 +24,12 @@ func (node Node) restoreSymlinkTimestamps(path string, utimes [2]syscall.Timespe
 	err = unix.UtimesNanoAt(int(dir.Fd()), filepath.Base(path), times, unix.AT_SYMLINK_NOFOLLOW)
 
 	if err != nil {
+		// ignore subsequent errors
+		_ = dir.Close()
 		return errors.Wrap(err, "UtimesNanoAt")
 	}
 
-	return nil
+	return dir.Close()
 }
 
 func (node Node) device() int {

internal/restic/node_test.go

@@ -29,7 +29,8 @@ func BenchmarkNodeFillUser(t *testing.B) {
 	t.ResetTimer()
 
 	for i := 0; i < t.N; i++ {
-		restic.NodeFromFileInfo(path, fi)
+		_, err := restic.NodeFromFileInfo(path, fi)
+		rtest.OK(t, err)
 	}
 
 	rtest.OK(t, tempfile.Close())