warning: prefix `z` is unknown
  --> $DIR/reserved-prefixes-migration.rs:16:9
   |
LL |     m2!(z"hey");
   |         ^ unknown prefix
   |
   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/reserving-syntax.html>
note: the lint level is defined here
  --> $DIR/reserved-prefixes-migration.rs:5:9
   |
LL | #![warn(rust_2021_prefixes_incompatible_syntax)]
   |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
help: insert whitespace here to avoid this being parsed as a prefix in Rust 2021
   |
LL |     m2!(z "hey");
   |          +

warning: prefix `prefix` is unknown
  --> $DIR/reserved-prefixes-migration.rs:19:9
   |
LL |     m2!(prefix"hey");
   |         ^^^^^^ unknown prefix
   |
   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/reserving-syntax.html>
help: insert whitespace here to avoid this being parsed as a prefix in Rust 2021
   |
LL |     m2!(prefix "hey");
   |               +

warning: prefix `hey` is unknown
  --> $DIR/reserved-prefixes-migration.rs:22:9
   |
LL |     m3!(hey#123);
   |         ^^^ unknown prefix
   |
   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/reserving-syntax.html>
help: insert whitespace here to avoid this being parsed as a prefix in Rust 2021
   |
LL |     m3!(hey #123);
   |            +

warning: prefix `hey` is unknown
  --> $DIR/reserved-prefixes-migration.rs:25:9
   |
LL |     m3!(hey#hey);
   |         ^^^ unknown prefix
   |
   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/reserving-syntax.html>
help: insert whitespace here to avoid this being parsed as a prefix in Rust 2021
   |
LL |     m3!(hey #hey);
   |            +

warning: prefix `kind` is unknown
  --> $DIR/reserved-prefixes-migration.rs:35:14
   |
LL |     #name = #kind#value
   |              ^^^^ unknown prefix
   |
   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/reserving-syntax.html>
help: insert whitespace here to avoid this being parsed as a prefix in Rust 2021
   |
LL |     #name = #kind #value
   |                  +

warning: 5 warnings emitted