v/vlib/v/checker/tests/array_pop_immutable_err.out

vlib/v/checker/tests/array_pop_immutable_err.vv:5:2: error: `a` is immutable, declare it with `mut` to make it mutable
    3 |     dump(a)
    4 |
    5 |     a.pop()
      |     ^
    6 |     dump(a)
    7 | }