vlib/v/checker/tests/array_or_map_assign_err.vv:5:7: notice: left-side of assignment expects a mutable reference, but variable `a1` is immutable, declare it with `mut` to make it mutable or clone it
    3 |     a2 := a1
    4 |     mut a3 := []int{}
    5 |     a3 = a1
      |          ~~
    6 | 
    7 |     m1 := {
vlib/v/checker/tests/array_or_map_assign_err.vv:12:7: notice: left-side of assignment expects a mutable reference, but variable `m1` is immutable, declare it with `mut` to make it mutable or clone it
   10 |     m2 := m1
   11 |     mut m3 := map[string]int{}
   12 |     m3 = m1
      |          ~~
   13 | 
   14 |     _ = a2
vlib/v/checker/tests/array_or_map_assign_err.vv:5:5: error: use `array2 = array1.clone()` instead of `array2 = array1` (or use `unsafe`)
    3 |     a2 := a1
    4 |     mut a3 := []int{}
    5 |     a3 = a1
      |        ^
    6 | 
    7 |     m1 := {
vlib/v/checker/tests/array_or_map_assign_err.vv:10:8: error: cannot copy map: call `move` or `clone` method (or use a reference)
    8 |         'one': 1
    9 |     }
   10 |     m2 := m1
      |           ~~
   11 |     mut m3 := map[string]int{}
   12 |     m3 = m1
vlib/v/checker/tests/array_or_map_assign_err.vv:12:7: error: cannot copy map: call `move` or `clone` method (or use a reference)
   10 |     m2 := m1
   11 |     mut m3 := map[string]int{}
   12 |     m3 = m1
      |          ~~
   13 | 
   14 |     _ = a2
vlib/v/checker/tests/array_or_map_assign_err.vv:29:8: error: cannot copy map: call `move` or `clone` method (or use a reference)
   27 | 
   28 | fn foo(mut m map[string]int) {
   29 |     m2 := m
      |           ^
   30 |     m['foo'] = 100
   31 |     println(m)