ices/82865.rs: fixed with errors

[github-actions]

Issue: rust-lang/rust#82865

use x::y::z;
fn register_builtin_macros() {
    macro register_derive ($f:ident) {
        Box::z($f)
    }
    register_derive! { clone }
}

=== stdout ===
=== stderr ===
error[E0433]: failed to resolve: use of undeclared crate or module `x`
 --> /home/runner/work/glacier/glacier/ices/82865.rs:1:5
  |
1 | use x::y::z;
  |     ^ use of undeclared crate or module `x`

error[E0425]: cannot find value `clone` in this scope
 --> /home/runner/work/glacier/glacier/ices/82865.rs:6:24
  |
6 |     register_derive! { clone }
  |                        ^^^^^ not found in this scope

error[E0658]: `macro` is experimental
 --> /home/runner/work/glacier/glacier/ices/82865.rs:3:5
  |
3 | /     macro register_derive ($f:ident) {
4 | |         Box::z($f)
5 | |     }
  | |_____^
  |
  = note: see issue #39412 <https://github.com/rust-lang/rust/issues/39412> for more information
  = help: add `#![feature(decl_macro)]` to the crate attributes to enable

error[E0601]: `main` function not found in crate `82865`
 --> /home/runner/work/glacier/glacier/ices/82865.rs:1:1
  |
1 | / use x::y::z;
2 | | fn register_builtin_macros() {
3 | |     macro register_derive ($f:ident) {
4 | |         Box::z($f)
5 | |     }
6 | |     register_derive! { clone }
7 | | }
  | |_^ consider adding a `main` function to `/home/runner/work/glacier/glacier/ices/82865.rs`

error[E0599]: no function or associated item named `z` found for struct `Box<_, _>` in the current scope
 --> /home/runner/work/glacier/glacier/ices/82865.rs:4:14
  |
4 |         Box::z($f)
  |              ^ function or associated item not found in `Box<_, _>`
5 |     }
6 |     register_derive! { clone }
  |     -------------------------- in this macro invocation
  |
  = note: this error originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)

error: aborting due to 5 previous errors

Some errors have detailed explanations: E0425, E0433, E0599, E0601, E0658.
For more information about an error, try `rustc --explain E0425`.
==============