error[E0658]: meta-variable expressions are unstable
  --> $DIR/required-feature.rs:3:10
   |
LL |         ${ count(e) }
   |          ^^^^^^^^^^^^
   |
   = note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
   = help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error[E0658]: meta-variable expressions are unstable
  --> $DIR/required-feature.rs:11:16
   |
LL |             ( $$( $$any:tt )* ) => { $$( $$any )* };
   |                ^
   |
   = note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
   = help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error[E0658]: meta-variable expressions are unstable
  --> $DIR/required-feature.rs:11:20
   |
LL |             ( $$( $$any:tt )* ) => { $$( $$any )* };
   |                    ^
   |
   = note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
   = help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error[E0658]: meta-variable expressions are unstable
  --> $DIR/required-feature.rs:11:39
   |
LL |             ( $$( $$any:tt )* ) => { $$( $$any )* };
   |                                       ^
   |
   = note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
   = help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error[E0658]: meta-variable expressions are unstable
  --> $DIR/required-feature.rs:11:43
   |
LL |             ( $$( $$any:tt )* ) => { $$( $$any )* };
   |                                           ^
   |
   = note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
   = help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error[E0658]: meta-variable expressions are unstable
  --> $DIR/required-feature.rs:22:13
   |
LL |         $( ${ignore(e)} ${index()} )*
   |             ^^^^^^^^^^^
   |
   = note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
   = help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error[E0658]: meta-variable expressions are unstable
  --> $DIR/required-feature.rs:22:26
   |
LL |         $( ${ignore(e)} ${index()} )*
   |                          ^^^^^^^^^
   |
   = note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
   = help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error[E0658]: meta-variable expressions are unstable
  --> $DIR/required-feature.rs:30:19
   |
LL |         0 $( + 1 ${ignore(i)} )*
   |                   ^^^^^^^^^^^
   |
   = note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
   = help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error[E0658]: meta-variable expressions are unstable
  --> $DIR/required-feature.rs:37:13
   |
LL |         $( ${ignore(e)} ${length()} )*
   |             ^^^^^^^^^^^
   |
   = note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
   = help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error[E0658]: meta-variable expressions are unstable
  --> $DIR/required-feature.rs:37:26
   |
LL |         $( ${ignore(e)} ${length()} )*
   |                          ^^^^^^^^^^
   |
   = note: see issue #83527 <https://github.com/rust-lang/rust/issues/83527> for more information
   = help: add `#![feature(macro_metavar_expr)]` to the crate attributes to enable

error: aborting due to 10 previous errors

For more information about this error, try `rustc --explain E0658`.