[INFO] fetching crate semaphorus 0.2.1...
[INFO] testing semaphorus-0.2.1 against 1.76.0 for beta-1.77-1
[INFO] extracting crate semaphorus 0.2.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate semaphorus 0.2.1 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "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-7-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5378be04d937f2bf07616b31fabd37551e8a1529fe147dcb21c114e87c5b651a
[INFO] running `Command { std: "docker" "start" "-a" "5378be04d937f2bf07616b31fabd37551e8a1529fe147dcb21c114e87c5b651a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5378be04d937f2bf07616b31fabd37551e8a1529fe147dcb21c114e87c5b651a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5378be04d937f2bf07616b31fabd37551e8a1529fe147dcb21c114e87c5b651a", kill_on_drop: false }`
[INFO] [stdout] 5378be04d937f2bf07616b31fabd37551e8a1529fe147dcb21c114e87c5b651a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a91ed595d80ad6e1ebcbaee8b4d2df311706a3ff53f03ecb3b0c95fed0896f80
[INFO] running `Command { std: "docker" "start" "-a" "a91ed595d80ad6e1ebcbaee8b4d2df311706a3ff53f03ecb3b0c95fed0896f80", 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" "a91ed595d80ad6e1ebcbaee8b4d2df311706a3ff53f03ecb3b0c95fed0896f80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a91ed595d80ad6e1ebcbaee8b4d2df311706a3ff53f03ecb3b0c95fed0896f80", kill_on_drop: false }`
[INFO] [stdout] a91ed595d80ad6e1ebcbaee8b4d2df311706a3ff53f03ecb3b0c95fed0896f80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1abec845a0fb91685ce40c654b0b26da0158d3e3d2d366ca0b2e0b264fcb19aa
[INFO] running `Command { std: "docker" "start" "-a" "1abec845a0fb91685ce40c654b0b26da0158d3e3d2d366ca0b2e0b264fcb19aa", 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] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[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 test [unoptimized + debuginfo] target(s) in 0.33s
[INFO] running `Command { std: "docker" "inspect" "1abec845a0fb91685ce40c654b0b26da0158d3e3d2d366ca0b2e0b264fcb19aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1abec845a0fb91685ce40c654b0b26da0158d3e3d2d366ca0b2e0b264fcb19aa", kill_on_drop: false }`
[INFO] [stdout] 1abec845a0fb91685ce40c654b0b26da0158d3e3d2d366ca0b2e0b264fcb19aa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 2a99a9600c6b9c3162c5ca3ab6f5a0d1a07cd21ac70fa4b0afbfa9eb8b4fed23
[INFO] running `Command { std: "docker" "start" "-a" "2a99a9600c6b9c3162c5ca3ab6f5a0d1a07cd21ac70fa4b0afbfa9eb8b4fed23", 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 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/semaphorus-a80979e20f65bcda)
[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 stable release channel
[INFO] [stderr]  --> 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 1 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: `/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type lib --crate-name semaphorus --test src/lib.rs --test-run-directory /opt/rustwide/workdir -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern semaphorus=/opt/rustwide/target/debug/deps/libsemaphorus-9468f95f4ea9afe7.rlib -C embed-bitcode=no --cfg 'feature="default"' --cfg 'feature="std"' --cfg 'feature="wrapper"' --cap-lints=warn --error-format human` (exit status: 1)
[INFO] [stderr] note: test exited abnormally; to see the full output pass --nocapture to the harness.
[INFO] running `Command { std: "docker" "inspect" "2a99a9600c6b9c3162c5ca3ab6f5a0d1a07cd21ac70fa4b0afbfa9eb8b4fed23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a99a9600c6b9c3162c5ca3ab6f5a0d1a07cd21ac70fa4b0afbfa9eb8b4fed23", kill_on_drop: false }`
[INFO] [stdout] 2a99a9600c6b9c3162c5ca3ab6f5a0d1a07cd21ac70fa4b0afbfa9eb8b4fed23
[INFO] testing semaphorus-0.2.1 against beta-2024-02-10 for beta-1.77-1
[INFO] extracting crate semaphorus 0.2.1 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate semaphorus 0.2.1 on toolchain beta-2024-02-10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "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-7-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 04c036caffe518756c4595c1a9240fee9a1924cb262133143587dc24b183b04d
[INFO] running `Command { std: "docker" "start" "-a" "04c036caffe518756c4595c1a9240fee9a1924cb262133143587dc24b183b04d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "04c036caffe518756c4595c1a9240fee9a1924cb262133143587dc24b183b04d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04c036caffe518756c4595c1a9240fee9a1924cb262133143587dc24b183b04d", kill_on_drop: false }`
[INFO] [stdout] 04c036caffe518756c4595c1a9240fee9a1924cb262133143587dc24b183b04d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 95a640f848d613166bc2488767d99e7c599a1a8490729ea2a5b742316c618c1f
[INFO] running `Command { std: "docker" "start" "-a" "95a640f848d613166bc2488767d99e7c599a1a8490729ea2a5b742316c618c1f", 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 0.05s
[INFO] running `Command { std: "docker" "inspect" "95a640f848d613166bc2488767d99e7c599a1a8490729ea2a5b742316c618c1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95a640f848d613166bc2488767d99e7c599a1a8490729ea2a5b742316c618c1f", kill_on_drop: false }`
[INFO] [stdout] 95a640f848d613166bc2488767d99e7c599a1a8490729ea2a5b742316c618c1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7ebdd479e7508b5717cf61d9fb8f7bf8ca22ded79d9781c7b381759981927457
[INFO] running `Command { std: "docker" "start" "-a" "7ebdd479e7508b5717cf61d9fb8f7bf8ca22ded79d9781c7b381759981927457", 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 0.22s
[INFO] running `Command { std: "docker" "inspect" "7ebdd479e7508b5717cf61d9fb8f7bf8ca22ded79d9781c7b381759981927457", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ebdd479e7508b5717cf61d9fb8f7bf8ca22ded79d9781c7b381759981927457", kill_on_drop: false }`
[INFO] [stdout] 7ebdd479e7508b5717cf61d9fb8f7bf8ca22ded79d9781c7b381759981927457
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ff961ec59ff1bd807fda1aeb07880fdf71b8910e9070193601d46fc4421c222e
[INFO] running `Command { std: "docker" "start" "-a" "ff961ec59ff1bd807fda1aeb07880fdf71b8910e9070193601d46fc4421c222e", 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 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/semaphorus-9fb84a259357c7ae)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stderr]    Doc-tests semaphorus
[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] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stderr]  --> 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 1 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: `/opt/rustwide/rustup-home/toolchains/beta-2024-02-10-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type lib --crate-name semaphorus --test src/lib.rs --test-run-directory /opt/rustwide/workdir -L dependency=/opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern semaphorus=/opt/rustwide/target/debug/deps/libsemaphorus-e5eed471e01274b7.rlib -C embed-bitcode=no --cfg 'feature="default"' --cfg 'feature="std"' --cfg 'feature="wrapper"' --cap-lints=warn --error-format human` (exit status: 1)
[INFO] [stderr] note: test exited abnormally; to see the full output pass --nocapture to the harness.
[INFO] running `Command { std: "docker" "inspect" "ff961ec59ff1bd807fda1aeb07880fdf71b8910e9070193601d46fc4421c222e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ff961ec59ff1bd807fda1aeb07880fdf71b8910e9070193601d46fc4421c222e", kill_on_drop: false }`
[INFO] [stdout] ff961ec59ff1bd807fda1aeb07880fdf71b8910e9070193601d46fc4421c222e
