|         ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`

warning: unused variable: `interests`
  --> tokio/src/doc/mod.rs:29:9
   |
29 |         interests: mio::Interest,
   |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interests`

warning: unused variable: `registry`
  --> tokio/src/doc/mod.rs:35:9
   |
35 |         registry: &mio::Registry,
   |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_registry`

warning: unused variable: `token`
  --> tokio/src/doc/mod.rs:36:9
   |
36 |         token: mio::Token,
   |         ^^^^^ help: if this is intentional, prefix it with an underscore: `_token`

warning: unused variable: `interests`
  --> tokio/src/doc/mod.rs:37:9
   |
37 |         interests: mio::Interest,
   |         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_interests`

warning: unused variable: `registry`
  --> tokio/src/doc/mod.rs:41:30
   |
41 |     fn deregister(&mut self, registry: &mio::Registry) -> std::io::Result<()> {
   |                              ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_registry`

warning: `tokio` (lib) generated 7 warnings
    Checking tokio-util v0.7.12 (/tmp/cirrus-ci-build/tokio-util)
    Checking futures v0.3.31
 Documenting tokio-macros v2.4.0 (/tmp/cirrus-ci-build/tokio-macros)
 Documenting tests-build v0.1.0 (/tmp/cirrus-ci-build/tests-build)
    Checking tokio-stream v0.1.16 (/tmp/cirrus-ci-build/tokio-stream)
 Documenting tokio-stream v0.1.16 (/tmp/cirrus-ci-build/tokio-stream)
    Checking tokio-test v0.4.4 (/tmp/cirrus-ci-build/tokio-test)
 Documenting tests-integration v0.1.0 (/tmp/cirrus-ci-build/tests-integration)
 Documenting tokio-test v0.4.4 (/tmp/cirrus-ci-build/tokio-test)
 Documenting tokio-util v0.7.12 (/tmp/cirrus-ci-build/tokio-util)
 Documenting tokio v1.41.0 (/tmp/cirrus-ci-build/tokio)
error: unresolved link to `crate::runtime::Handle::dump`
  --> tokio/src/sync/mod.rs:17:19
   |
17 | //! [Task Dumps]: crate::runtime::Handle::dump
   |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the struct `Handle` has no field or associated item named `dump`
   |
   = note: `-D rustdoc::broken-intra-doc-links` implied by `-D warnings`
   = help: to override `-D warnings` add `#[allow(rustdoc::broken_intra_doc_links)]`

error: could not document `tokio`

Exit status: 101