[INFO] fetching crate cancellation 0.1.0...
[INFO] testing cancellation-0.1.0 against 1.60.0 for beta-1.61-1
[INFO] extracting crate cancellation 0.1.0 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate cancellation 0.1.0 on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "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-28/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 35f2d89e54b196bb55ef1a32f448073e13227e196fc571b69036fa8c06ba4059
[INFO] running `Command { std: "docker" "start" "-a" "35f2d89e54b196bb55ef1a32f448073e13227e196fc571b69036fa8c06ba4059", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "35f2d89e54b196bb55ef1a32f448073e13227e196fc571b69036fa8c06ba4059", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35f2d89e54b196bb55ef1a32f448073e13227e196fc571b69036fa8c06ba4059", kill_on_drop: false }`
[INFO] [stdout] 35f2d89e54b196bb55ef1a32f448073e13227e196fc571b69036fa8c06ba4059
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4aab73199a7c8dfe0df3139d7566407e978217adaec41a557b357faa880f2d51
[INFO] running `Command { std: "docker" "start" "-a" "4aab73199a7c8dfe0df3139d7566407e978217adaec41a557b357faa880f2d51", 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]     |             ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated constant: `AtomicUsize::new(0)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `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]     = note: `#[warn(bare_trait_objects)]` on by default
[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] 161 -     on_cancel: &'a mut (FnOnceOption + Send + 'a),
[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 (FnOnceOption + Send + 'a),
[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 1.07s
[INFO] running `Command { std: "docker" "inspect" "4aab73199a7c8dfe0df3139d7566407e978217adaec41a557b357faa880f2d51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4aab73199a7c8dfe0df3139d7566407e978217adaec41a557b357faa880f2d51", kill_on_drop: false }`
[INFO] [stdout] 4aab73199a7c8dfe0df3139d7566407e978217adaec41a557b357faa880f2d51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca4883b3078aa0bce7b3997e107d895295e3d053ca15f341703129c5ac747e8e
[INFO] running `Command { std: "docker" "start" "-a" "ca4883b3078aa0bce7b3997e107d895295e3d053ca15f341703129c5ac747e8e", 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] [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:135:13
[INFO] [stdout]     |
[INFO] [stdout] 135 |     status: ATOMIC_USIZE_INIT, //AtomicUsize::new(STATUS_CANNOT_BE_CANCELED),
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated constant: `AtomicUsize::new(0)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `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]     = note: `#[warn(bare_trait_objects)]` on by default
[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] 161 -     on_cancel: &'a mut (FnOnceOption + Send + 'a),
[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 (FnOnceOption + Send + 'a),
[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]     |             ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated constant: `AtomicUsize::new(0)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `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]     = note: `#[warn(bare_trait_objects)]` on by default
[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] 161 -     on_cancel: &'a mut (FnOnceOption + Send + 'a),
[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 (FnOnceOption + Send + 'a),
[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 0.66s
[INFO] running `Command { std: "docker" "inspect" "ca4883b3078aa0bce7b3997e107d895295e3d053ca15f341703129c5ac747e8e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca4883b3078aa0bce7b3997e107d895295e3d053ca15f341703129c5ac747e8e", kill_on_drop: false }`
[INFO] [stdout] ca4883b3078aa0bce7b3997e107d895295e3d053ca15f341703129c5ac747e8e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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" "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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8adf6d86f6a3ccfb50d3ba22f0d2a66c9efb21fb93584558af56841f94c506e9
[INFO] running `Command { std: "docker" "start" "-a" "8adf6d86f6a3ccfb50d3ba22f0d2a66c9efb21fb93584558af56841f94c506e9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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]     |             ^^^^^^^^^^^^^^^^^ help: replace the use of the deprecated constant: `AtomicUsize::new(0)`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated associated function `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]     = note: `#[warn(bare_trait_objects)]` on by default
[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] 161 -     on_cancel: &'a mut (FnOnceOption + Send + 'a),
[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 (FnOnceOption + Send + 'a),
[INFO] [stderr] 330 +                 on_cancel: &'a mut (dyn FnOnceOption + Send + 'a),
[INFO] [stderr]     | 
[INFO] [stderr] 
[INFO] [stderr] warning: `cancellation` (lib) generated 5 warnings
[INFO] [stderr] warning: `cancellation` (lib test) generated 5 warnings (5 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/cancellation-2019443b577c89d8)
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests cancellation
[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_not_canceled ... ok
[INFO] [stdout] test test::none_run ... 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] [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 2.25s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8adf6d86f6a3ccfb50d3ba22f0d2a66c9efb21fb93584558af56841f94c506e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8adf6d86f6a3ccfb50d3ba22f0d2a66c9efb21fb93584558af56841f94c506e9", kill_on_drop: false }`
[INFO] [stdout] 8adf6d86f6a3ccfb50d3ba22f0d2a66c9efb21fb93584558af56841f94c506e9