error: integer literal 300 does not fit in s8 (range -128..127) — use an explicit `xx` / `cast` to truncate
  --> examples/1156-diagnostics-int-literal-out-of-range.sx:8:14
   |
 8 |     x : s8 = 300;
   |              ^^^

error: integer literal 256 does not fit in u8 (range 0..255) — use an explicit `xx` / `cast` to truncate
  --> examples/1156-diagnostics-int-literal-out-of-range.sx:10:14
   |
10 |     y : u8 = 256;
   |              ^^^