forkserver_simple is not compiling

[20urc3]

The example forkserver_simple is not compiling.

error: cannot find derive macro `Parser` in this scope
  --> src/main.rs:31:17
   |
31 | #[derive(Debug, Parser)]
   |                 ^^^^^^
   |
note: `Parser` is imported here, but it is only a trait, without a derive macro
  --> src/main.rs:4:5
   |
4  | use clap::Parser;
   |     ^^^^^^^^^^^^

error: cannot find attribute `command` in this scope
  --> src/main.rs:32:3
   |
32 | #[command(
   |   ^^^^^^^

error: cannot find attribute `arg` in this scope
  --> src/main.rs:38:7
   |
38 |     #[arg(
   |       ^^^

error: cannot find attribute `arg` in this scope
  --> src/main.rs:45:7
   |
45 |     #[arg(
   |       ^^^

error: cannot find attribute `arg` in this scope
  --> src/main.rs:52:7
   |
52 |     #[arg(
   |       ^^^

error: cannot find attribute `arg` in this scope
  --> src/main.rs:60:7
   |
60 |     #[arg(
   |       ^^^

error: cannot find attribute `arg` in this scope
  --> src/main.rs:68:7
   |
68 |     #[arg(
   |       ^^^

error: cannot find attribute `arg` in this scope
  --> src/main.rs:76:7
   |
76 |     #[arg(
   |       ^^^

error[E0599]: no function or associated item named `parse` found for struct `Opt` in the current scope
  --> src/main.rs:91:20
   |
37 | struct Opt {
   | ---------- function or associated item `parse` not found for this struct
...
91 |     let opt = Opt::parse();
   |                    ^^^^^ function or associated item not found in `Opt`
   |
   = help: items from traits can only be used if the trait is implemented and in scope
   = note: the following traits define an item `parse`, perhaps you need to implement one of them:
           candidate #1: `Parser`
           candidate #2: `TypedValueParser`
           candidate #3: `object::read::coff::file::CoffHeader`
           candidate #4: `object::read::elf::file::FileHeader`
           candidate #5: `object::read::macho::file::MachHeader`
           candidate #6: `object::read::pe::file::ImageNtHeaders`
           candidate #7: `object::read::xcoff::file::FileHeader`

[tokatoka]

cargo update?