error[E0658]: :literal fragment specifier is experimental and subject to change (see issue #35625) | |
--> $DIR/feature-gate-macro-literal-matcher.rs:14:19 | |
| | |
LL | macro_rules! m { ($lt:literal) => {} } | |
| ^^^^^^^^^^^ | |
| | |
= help: add #![feature(macro_literal_matcher)] to the crate attributes to enable | |
error: aborting due to previous error | |
For more information about this error, try `rustc --explain E0658`. |