warning[W09002]: unused variable
  ┌─ tests/move_check/typing/duplicate_function_parameter_names.move:2:13
  │
2 │     fun foo(x: u64, x: u64) {}
  │             ^ Unused parameter 'x'. Consider removing or prefixing with an underscore: '_x'

error[E02001]: duplicate declaration, item, or annotation
  ┌─ tests/move_check/typing/duplicate_function_parameter_names.move:2:21
  │
2 │     fun foo(x: u64, x: u64) {}
  │             -       ^ Duplicate parameter with name 'x'
  │             │        
  │             Previously declared here

warning[W09002]: unused variable
  ┌─ tests/move_check/typing/duplicate_function_parameter_names.move:2:21
  │
2 │     fun foo(x: u64, x: u64) {}
  │                     ^ Unused local variable 'x'. Consider removing or prefixing with an underscore: '_x'