cmd/fshim/ipc: friendly setup timeout message

This message eventually gets returned by the app's Start method, so they should be wrapped to provide a friendly message.

Signed-off-by: Ophestra Umiker <cat@ophivana.moe>

cmd/fshim/ipc/shim/shim.go

@@ -117,7 +117,8 @@ func (s *Shim) Start(f CommandBuilder) (*time.Time, error) {
 			conn = c
 		}
 	case <-time.After(shimSetupTimeout):
-		err := errors.New("timed out waiting for shim")
+		err := fmsg.WrapError(errors.New("timed out waiting for shim"),
+			"timed out waiting for shim to connect")
 		s.AbortWait(err)
 		return &startTime, err
 	}