[INFO] fetching crate cancellation 0.1.0...
[INFO] testing cancellation-0.1.0 against beta-2023-04-20 for beta-1.70-1
[INFO] extracting crate cancellation 0.1.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate cancellation 0.1.0 on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cancellation 0.1.0
[INFO] finished tweaking crates.io crate cancellation 0.1.0
[INFO] tweaked toml for crates.io crate cancellation 0.1.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 965660d8e20a2a34edb3621778f6fe2c6cce70380ee2936143a30ae112c6596a
[INFO] running `Command { std: "docker" "start" "-a" "965660d8e20a2a34edb3621778f6fe2c6cce70380ee2936143a30ae112c6596a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "965660d8e20a2a34edb3621778f6fe2c6cce70380ee2936143a30ae112c6596a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "965660d8e20a2a34edb3621778f6fe2c6cce70380ee2936143a30ae112c6596a", kill_on_drop: false }`
[INFO] [stdout] 965660d8e20a2a34edb3621778f6fe2c6cce70380ee2936143a30ae112c6596a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4c3e79bfe84a1a1325e3bacaafd646c40693ed07ff29f1c85781a012e8266163
[INFO] running `Command { std: "docker" "start" "-a" "4c3e79bfe84a1a1325e3bacaafd646c40693ed07ff29f1c85781a012e8266163", kill_on_drop: false }`
[INFO] [stderr]    Compiling cancellation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> lib.rs:97:38
[INFO] [stdout]    |
[INFO] [stdout] 97 | use std::sync::atomic::{AtomicUsize, ATOMIC_USIZE_INIT, Ordering};
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> lib.rs:135:13
[INFO] [stdout]     |
[INFO] [stdout] 135 |     status: ATOMIC_USIZE_INIT, //AtomicUsize::new(STATUS_CANNOT_BE_CANCELED),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated constant
[INFO] [stdout]     |
[INFO] [stdout] 135 |     status: AtomicUsize::new(0), //AtomicUsize::new(STATUS_CANNOT_BE_CANCELED),
[INFO] [stdout]     |             ~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> lib.rs:418:35
[INFO] [stdout]     |
[INFO] [stdout] 418 |         f.write_str(error::Error::description(self))
[INFO] [stdout]     |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> lib.rs:161:25
[INFO] [stdout]     |
[INFO] [stdout] 161 |     on_cancel: &'a mut (FnOnceOption + Send + 'a),
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 161 |     on_cancel: &'a mut (dyn FnOnceOption + Send + 'a),
[INFO] [stdout]     |                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> lib.rs:330:37
[INFO] [stdout]     |
[INFO] [stdout] 330 |                 on_cancel: &'a mut (FnOnceOption + Send + 'a),
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 330 |                 on_cancel: &'a mut (dyn FnOnceOption + Send + 'a),
[INFO] [stdout]     |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.27s
[INFO] running `Command { std: "docker" "inspect" "4c3e79bfe84a1a1325e3bacaafd646c40693ed07ff29f1c85781a012e8266163", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c3e79bfe84a1a1325e3bacaafd646c40693ed07ff29f1c85781a012e8266163", kill_on_drop: false }`
[INFO] [stdout] 4c3e79bfe84a1a1325e3bacaafd646c40693ed07ff29f1c85781a012e8266163
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 85b512a3f7268e0c32f585a18db5732e181d5753ab4e7158be8d0166bf863205
[INFO] running `Command { std: "docker" "start" "-a" "85b512a3f7268e0c32f585a18db5732e181d5753ab4e7158be8d0166bf863205", kill_on_drop: false }`
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> lib.rs:97:38
[INFO] [stdout]    |
[INFO] [stdout] 97 | use std::sync::atomic::{AtomicUsize, ATOMIC_USIZE_INIT, Ordering};
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> lib.rs:135:13
[INFO] [stdout]     |
[INFO] [stdout] 135 |     status: ATOMIC_USIZE_INIT, //AtomicUsize::new(STATUS_CANNOT_BE_CANCELED),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated constant
[INFO] [stdout]     |
[INFO] [stdout] 135 |     status: AtomicUsize::new(0), //AtomicUsize::new(STATUS_CANNOT_BE_CANCELED),
[INFO] [stdout]     |             ~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> lib.rs:418:35
[INFO] [stdout]     |
[INFO] [stdout] 418 |         f.write_str(error::Error::description(self))
[INFO] [stdout]     |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling cancellation v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> lib.rs:161:25
[INFO] [stdout]     |
[INFO] [stdout] 161 |     on_cancel: &'a mut (FnOnceOption + Send + 'a),
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 161 |     on_cancel: &'a mut (dyn FnOnceOption + Send + 'a),
[INFO] [stdout]     |                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> lib.rs:330:37
[INFO] [stdout]     |
[INFO] [stdout] 330 |                 on_cancel: &'a mut (FnOnceOption + Send + 'a),
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 330 |                 on_cancel: &'a mut (dyn FnOnceOption + Send + 'a),
[INFO] [stdout]     |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]   --> lib.rs:97:38
[INFO] [stdout]    |
[INFO] [stdout] 97 | use std::sync::atomic::{AtomicUsize, ATOMIC_USIZE_INIT, Ordering};
[INFO] [stdout]    |                                      ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stdout]    --> lib.rs:135:13
[INFO] [stdout]     |
[INFO] [stdout] 135 |     status: ATOMIC_USIZE_INIT, //AtomicUsize::new(STATUS_CANNOT_BE_CANCELED),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: replace the use of the deprecated constant
[INFO] [stdout]     |
[INFO] [stdout] 135 |     status: AtomicUsize::new(0), //AtomicUsize::new(STATUS_CANNOT_BE_CANCELED),
[INFO] [stdout]     |             ~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> lib.rs:418:35
[INFO] [stdout]     |
[INFO] [stdout] 418 |         f.write_str(error::Error::description(self))
[INFO] [stdout]     |                                   ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> lib.rs:161:25
[INFO] [stdout]     |
[INFO] [stdout] 161 |     on_cancel: &'a mut (FnOnceOption + Send + 'a),
[INFO] [stdout]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 161 |     on_cancel: &'a mut (dyn FnOnceOption + Send + 'a),
[INFO] [stdout]     |                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> lib.rs:330:37
[INFO] [stdout]     |
[INFO] [stdout] 330 |                 on_cancel: &'a mut (FnOnceOption + Send + 'a),
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 330 |                 on_cancel: &'a mut (dyn FnOnceOption + Send + 'a),
[INFO] [stdout]     |                                     +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "85b512a3f7268e0c32f585a18db5732e181d5753ab4e7158be8d0166bf863205", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "85b512a3f7268e0c32f585a18db5732e181d5753ab4e7158be8d0166bf863205", kill_on_drop: false }`
[INFO] [stdout] 85b512a3f7268e0c32f585a18db5732e181d5753ab4e7158be8d0166bf863205
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ff878d84aa47ab8c6408c8256e34a29873d88a61feb8f6f53e59c6bda66560e8
[INFO] running `Command { std: "docker" "start" "-a" "ff878d84aa47ab8c6408c8256e34a29873d88a61feb8f6f53e59c6bda66560e8", kill_on_drop: false }`
[INFO] [stderr] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stderr]   --> lib.rs:97:38
[INFO] [stderr]    |
[INFO] [stderr] 97 | use std::sync::atomic::{AtomicUsize, ATOMIC_USIZE_INIT, Ordering};
[INFO] [stderr]    |                                      ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated constant `std::sync::atomic::ATOMIC_USIZE_INIT`: the `new` function is now preferred
[INFO] [stderr]    --> lib.rs:135:13
[INFO] [stderr]     |
[INFO] [stderr] 135 |     status: ATOMIC_USIZE_INIT, //AtomicUsize::new(STATUS_CANNOT_BE_CANCELED),
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr] help: replace the use of the deprecated constant
[INFO] [stderr]     |
[INFO] [stderr] 135 |     status: AtomicUsize::new(0), //AtomicUsize::new(STATUS_CANNOT_BE_CANCELED),
[INFO] [stderr]     |             ~~~~~~~~~~~~~~~~~~~
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stderr]    --> lib.rs:418:35
[INFO] [stderr]     |
[INFO] [stderr] 418 |         f.write_str(error::Error::description(self))
[INFO] [stderr]     |                                   ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> lib.rs:161:25
[INFO] [stderr]     |
[INFO] [stderr] 161 |     on_cancel: &'a mut (FnOnceOption + Send + 'a),
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 161 |     on_cancel: &'a mut (dyn FnOnceOption + Send + 'a),
[INFO] [stderr]     |                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> lib.rs:330:37
[INFO] [stderr]     |
[INFO] [stderr] 330 |                 on_cancel: &'a mut (FnOnceOption + Send + 'a),
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 330 |                 on_cancel: &'a mut (dyn FnOnceOption + Send + 'a),
[INFO] [stderr]     |                                     +++
[INFO] [stderr] 
[INFO] [stderr] warning: `cancellation` (lib) generated 5 warnings (run `cargo fix --lib -p cancellation` to apply 3 suggestions)
[INFO] [stderr] warning: `cancellation` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests lib.rs (/opt/rustwide/target/debug/deps/cancellation-ee78302e68c20edb)
[INFO] [stdout] 
[INFO] [stdout] running 7 tests
[INFO] [stdout] test test::cancel ... ok
[INFO] [stdout] test test::cancel_in_recursive_run ... ok
[INFO] [stdout] test test::none_run ... ok
[INFO] [stdout] test test::none_not_canceled ... ok
[INFO] [stdout] test test::on_cancel_is_not_called_after_end_of_run ... ok
[INFO] [stdout] test test::recursive_run_already_canceled ... ok
[INFO] [stdout] test test::run_already_canceled ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 7 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cancellation
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test lib.rs - (line 58) ... ok
[INFO] [stdout] test lib.rs - (line 33) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 2.17s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ff878d84aa47ab8c6408c8256e34a29873d88a61feb8f6f53e59c6bda66560e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff878d84aa47ab8c6408c8256e34a29873d88a61feb8f6f53e59c6bda66560e8", kill_on_drop: false }`
[INFO] [stdout] ff878d84aa47ab8c6408c8256e34a29873d88a61feb8f6f53e59c6bda66560e8
