error: expected type, found `'` --> $DIR/lifetimes.rs:7:10 | LL | type A = single_quote_alone!(); | ^^^^^^^^^^^^^^^^^^^^^ | | | expected type | this macro call doesn't expand to a type | = note: this error originates in the macro `single_quote_alone` (in Nightly builds, run with -Z macro-backtrace for more info) error: aborting due to 1 previous error