warning[W09003]: unused assignment
  ┌─ tests/move_check/translated_ir_tests/move/commands/use_before_assign.move:4:9
  │
4 │     let y = x;
  │         ^ Unused assignment or binding for local 'y'. Consider removing, replacing with '_', or prefixing with '_' (e.g., '_y')

error[E06002]: use of unassigned variable
  ┌─ tests/move_check/translated_ir_tests/move/commands/use_before_assign.move:4:13
  │
3 │     let x: u64;
  │         - The variable 'x' does not have a value. The variable must be assigned a value before being used.
4 │     let y = x;
  │             ^ Invalid usage of unassigned variable 'x'