vlib/v/checker/tests/map_init_key_duplicate_err.vv:5:3: error: duplicate key "foo" in map literal
    3 |         'foo': 'bar'
    4 |         'abc': 'abc'
    5 |         'foo': 'bar'
      |         ~~~~~
    6 |     }
    7 |     println(a)
