error[E0703]: invalid ABI: found `invalid-ab_isize` --> $DIR/issue-8537.rs:2:3 | LL | "invalid-ab_isize" | ^^^^^^^^^^^^^^^^^^ invalid ABI | = note: invoke `rustc --print=calling-conventions` for a full list of supported calling conventions error: aborting due to 1 previous error For more information about this error, try `rustc --explain E0703`.