[INFO] fetching crate semaphorus 0.2.1...
[INFO] testing semaphorus-0.2.1 against 1.83.0 for beta-1.84.0-4-retry
[INFO] extracting crate semaphorus 0.2.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate semaphorus 0.2.1 on toolchain 1.83.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.83.0" "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-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.83.0" "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" "+1.83.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 24f278877e06291bf0dc635f7b8cbcd70215ae6647caf15c9ce1b750291f5b93
[INFO] running `Command { std: "docker" "start" "-a" "24f278877e06291bf0dc635f7b8cbcd70215ae6647caf15c9ce1b750291f5b93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "24f278877e06291bf0dc635f7b8cbcd70215ae6647caf15c9ce1b750291f5b93", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "24f278877e06291bf0dc635f7b8cbcd70215ae6647caf15c9ce1b750291f5b93", kill_on_drop: false }`
[INFO] [stdout] 24f278877e06291bf0dc635f7b8cbcd70215ae6647caf15c9ce1b750291f5b93
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6d2d2b8be6f0e2a7aafc768d5e5799e34f04f260a412641d8466a11372f0ad50
[INFO] running `Command { std: "docker" "start" "-a" "6d2d2b8be6f0e2a7aafc768d5e5799e34f04f260a412641d8466a11372f0ad50", 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.14s
[INFO] running `Command { std: "docker" "inspect" "6d2d2b8be6f0e2a7aafc768d5e5799e34f04f260a412641d8466a11372f0ad50", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6d2d2b8be6f0e2a7aafc768d5e5799e34f04f260a412641d8466a11372f0ad50", kill_on_drop: false }`
[INFO] [stdout] 6d2d2b8be6f0e2a7aafc768d5e5799e34f04f260a412641d8466a11372f0ad50
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 221a8f1d10379918b36bcf87ef0fb1332ff3a5ccd07cf5a4ee6a5ebb6ddcebaf
[INFO] running `Command { std: "docker" "start" "-a" "221a8f1d10379918b36bcf87ef0fb1332ff3a5ccd07cf5a4ee6a5ebb6ddcebaf", 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: 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]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "221a8f1d10379918b36bcf87ef0fb1332ff3a5ccd07cf5a4ee6a5ebb6ddcebaf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "221a8f1d10379918b36bcf87ef0fb1332ff3a5ccd07cf5a4ee6a5ebb6ddcebaf", kill_on_drop: false }`
[INFO] [stdout] 221a8f1d10379918b36bcf87ef0fb1332ff3a5ccd07cf5a4ee6a5ebb6ddcebaf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+1.83.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 915707d469da64cc691b81eca9ac9903a8c3e942d9140e1d515fac97abb943ff
[INFO] running `Command { std: "docker" "start" "-a" "915707d469da64cc691b81eca9ac9903a8c3e942d9140e1d515fac97abb943ff", 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` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/semaphorus-c3f83b1dc09f011b)
[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/1.83.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2021 --crate-type lib --color auto --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-4393198b83b196f9.rlib -C embed-bitcode=no --cfg 'feature="default"' --cfg 'feature="std"' --cfg 'feature="wrapper"' --check-cfg 'cfg(docsrs)' --check-cfg 'cfg(feature, values("default", "nightly", "std", "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" "915707d469da64cc691b81eca9ac9903a8c3e942d9140e1d515fac97abb943ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "915707d469da64cc691b81eca9ac9903a8c3e942d9140e1d515fac97abb943ff", kill_on_drop: false }`
[INFO] [stdout] 915707d469da64cc691b81eca9ac9903a8c3e942d9140e1d515fac97abb943ff
