vlib/v/checker/tests/mut_receiver_lit.vv:12:2: error: cannot pass expression as `mut`
   10 | 
   11 | fn non_mut_receiver() {
   12 |     Box{}.set(0)
      |     ~~~~~
   13 | }
   14 |
vlib/v/checker/tests/mut_receiver_lit.vv:18:11: error: cannot pass expression as `mut`
   16 | fn array_chained_method_calls() {
   17 |     path := 'hello/file.txt'
   18 |     _ = path.split('.').pop()
      |              ~~~~~~~~~~
   19 | }
   20 |
vlib/v/checker/tests/mut_receiver_lit.vv:24:4: error: cannot pass expression as `mut`
   22 | fn map_chained_method_calls() {
   23 |     mut m := map[int]int{}
   24 |     m.clone().delete(0)
      |       ~~~~~~~
   25 | }