error: using `procedural-masquerade` crate
  --> $DIR/issue-73933-procedural-masquerade.rs:7:6
   |
LL | enum ProceduralMasqueradeDummyType {
   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `#[deny(proc_macro_back_compat)]` on by default
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
   = note: The `procedural-masquerade` crate has been unnecessary since Rust 1.30.0. Versions of this crate below 0.1.7 will eventually stop compiling.

error: aborting due to previous error

Future incompatibility report: Future breakage diagnostic:
error: using `procedural-masquerade` crate
  --> $DIR/issue-73933-procedural-masquerade.rs:7:6
   |
LL | enum ProceduralMasqueradeDummyType {
   |      ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
   |
   = note: `#[deny(proc_macro_back_compat)]` on by default
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
   = note: The `procedural-masquerade` crate has been unnecessary since Rust 1.30.0. Versions of this crate below 0.1.7 will eventually stop compiling.

