[INFO] fetching crate semaphorus 0.2.1...
[INFO] testing semaphorus-0.2.1 against beta-2023-04-20 for beta-1.70-1
[INFO] extracting crate semaphorus 0.2.1 into /workspace/builds/worker-1-tc2/source
[INFO] validating manifest of crates.io crate semaphorus 0.2.1 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 semaphorus 0.2.1
[INFO] finished tweaking crates.io crate semaphorus 0.2.1
[INFO] tweaked toml for crates.io crate semaphorus 0.2.1 written to /workspace/builds/worker-1-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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 985d0329145040735b7e424de2867e6c1ecf685330613d9789e19c7bd268032b
[INFO] running `Command { std: "docker" "start" "-a" "985d0329145040735b7e424de2867e6c1ecf685330613d9789e19c7bd268032b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "985d0329145040735b7e424de2867e6c1ecf685330613d9789e19c7bd268032b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "985d0329145040735b7e424de2867e6c1ecf685330613d9789e19c7bd268032b", kill_on_drop: false }`
[INFO] [stdout] 985d0329145040735b7e424de2867e6c1ecf685330613d9789e19c7bd268032b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 9b12830d746b89fa7ce033b97738b3d9768c5202616aee39d1d049c1217c51ca
[INFO] running `Command { std: "docker" "start" "-a" "9b12830d746b89fa7ce033b97738b3d9768c5202616aee39d1d049c1217c51ca", kill_on_drop: false }`
[INFO] [stderr]    Compiling semaphorus v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `AtomicUsize`
[INFO] [stdout]  --> src/wrapper.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 |     sync::atomic::{AtomicUsize, Ordering},
[INFO] [stdout]   |                    ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "9b12830d746b89fa7ce033b97738b3d9768c5202616aee39d1d049c1217c51ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9b12830d746b89fa7ce033b97738b3d9768c5202616aee39d1d049c1217c51ca", kill_on_drop: false }`
[INFO] [stdout] 9b12830d746b89fa7ce033b97738b3d9768c5202616aee39d1d049c1217c51ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] d090d5dde58c26654209b2ffbd0210017390ab67972ed9f11ba34dcaee61132c
[INFO] running `Command { std: "docker" "start" "-a" "d090d5dde58c26654209b2ffbd0210017390ab67972ed9f11ba34dcaee61132c", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `AtomicUsize`
[INFO] [stdout]  --> src/wrapper.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 |     sync::atomic::{AtomicUsize, Ordering},
[INFO] [stdout]   |                    ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling semaphorus v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `AtomicUsize`
[INFO] [stdout]  --> src/wrapper.rs:4:20
[INFO] [stdout]   |
[INFO] [stdout] 4 |     sync::atomic::{AtomicUsize, Ordering},
[INFO] [stdout]   |                    ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "d090d5dde58c26654209b2ffbd0210017390ab67972ed9f11ba34dcaee61132c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d090d5dde58c26654209b2ffbd0210017390ab67972ed9f11ba34dcaee61132c", kill_on_drop: false }`
[INFO] [stdout] d090d5dde58c26654209b2ffbd0210017390ab67972ed9f11ba34dcaee61132c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 045fa5058d3200950612285768ebc3e8ace12d53e221d00f6217660669974a0f
[INFO] running `Command { std: "docker" "start" "-a" "045fa5058d3200950612285768ebc3e8ace12d53e221d00f6217660669974a0f", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `AtomicUsize`
[INFO] [stderr]  --> src/wrapper.rs:4:20
[INFO] [stderr]   |
[INFO] [stderr] 4 |     sync::atomic::{AtomicUsize, Ordering},
[INFO] [stderr]   |                    ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `semaphorus` (lib) generated 1 warning (run `cargo fix --lib -p semaphorus` to apply 1 suggestion)
[INFO] [stderr] warning: `semaphorus` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/semaphorus-e1b8aeffde75590a)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test raw::tests::test_maximum_count_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests semaphorus
[INFO] [stderr] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> /opt/rustwide/workdir/src/lib.rs:1:44
[INFO] [stderr]   |
[INFO] [stderr] 1 | #![cfg_attr(any(feature = "nightly", doc), feature(negative_impls))]
[INFO] [stderr]   |                                            ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] For more information about this error, try `rustc --explain E0554`.
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name semaphorus --test /opt/rustwide/workdir/src/lib.rs -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern semaphorus=/opt/rustwide/target/debug/deps/libsemaphorus-6f0bf54fc71e78da.rlib -C embed-bitcode=no --cfg 'feature="default"' --cfg 'feature="std"' --cfg 'feature="wrapper"' --cap-lints=warn --error-format human` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "045fa5058d3200950612285768ebc3e8ace12d53e221d00f6217660669974a0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "045fa5058d3200950612285768ebc3e8ace12d53e221d00f6217660669974a0f", kill_on_drop: false }`
[INFO] [stdout] 045fa5058d3200950612285768ebc3e8ace12d53e221d00f6217660669974a0f
