[INFO] fetching crate semaphorus 0.2.1...
[INFO] testing semaphorus-0.2.1 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate semaphorus 0.2.1 into /workspace/builds/worker-3-tc2/source
[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-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate semaphorus 0.2.1 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "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-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc45bb615d80aaf3e14cc1b0dbcfcad95ef5502a6cb062b446903cffd2366d6e
[INFO] running `Command { std: "docker" "start" "-a" "cc45bb615d80aaf3e14cc1b0dbcfcad95ef5502a6cb062b446903cffd2366d6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc45bb615d80aaf3e14cc1b0dbcfcad95ef5502a6cb062b446903cffd2366d6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc45bb615d80aaf3e14cc1b0dbcfcad95ef5502a6cb062b446903cffd2366d6e", kill_on_drop: false }`
[INFO] [stdout] cc45bb615d80aaf3e14cc1b0dbcfcad95ef5502a6cb062b446903cffd2366d6e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce74ba1af57587a2f59c3e1b99b9200b8bc26f71fd8955622aeb434f5df0716a
[INFO] running `Command { std: "docker" "start" "-a" "ce74ba1af57587a2f59c3e1b99b9200b8bc26f71fd8955622aeb434f5df0716a", 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/raw.rs:73:20
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn try_get(&self) -> Result<SemaphoreGuard, crate::SemaphoreError> {
[INFO] [stdout]    |                    ^^^^^            ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn try_get(&self) -> Result<SemaphoreGuard<'_>, crate::SemaphoreError> {
[INFO] [stdout]    |                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/wrapper.rs:33:16
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn get(&self) -> SemaphoreGuard<T> {
[INFO] [stdout]    |                ^^^^^     ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn get(&self) -> SemaphoreGuard<'_, T> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/wrapper.rs:53:20
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn try_get(&self) -> Result<SemaphoreGuard<T>, SemaphoreError> {
[INFO] [stdout]    |                    ^^^^^            ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn try_get(&self) -> Result<SemaphoreGuard<'_, T>, SemaphoreError> {
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.19s
[INFO] running `Command { std: "docker" "inspect" "ce74ba1af57587a2f59c3e1b99b9200b8bc26f71fd8955622aeb434f5df0716a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce74ba1af57587a2f59c3e1b99b9200b8bc26f71fd8955622aeb434f5df0716a", kill_on_drop: false }`
[INFO] [stdout] ce74ba1af57587a2f59c3e1b99b9200b8bc26f71fd8955622aeb434f5df0716a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d2e86e380b3eb93bc5aee09eca80df90bfbdf068e0bb3ab9b8c5dcc38acc3bd
[INFO] running `Command { std: "docker" "start" "-a" "7d2e86e380b3eb93bc5aee09eca80df90bfbdf068e0bb3ab9b8c5dcc38acc3bd", 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/raw.rs:73:20
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn try_get(&self) -> Result<SemaphoreGuard, crate::SemaphoreError> {
[INFO] [stdout]    |                    ^^^^^            ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn try_get(&self) -> Result<SemaphoreGuard<'_>, crate::SemaphoreError> {
[INFO] [stdout]    |                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling semaphorus v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/wrapper.rs:33:16
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn get(&self) -> SemaphoreGuard<T> {
[INFO] [stdout]    |                ^^^^^     ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn get(&self) -> SemaphoreGuard<'_, T> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/wrapper.rs:53:20
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn try_get(&self) -> Result<SemaphoreGuard<T>, SemaphoreError> {
[INFO] [stdout]    |                    ^^^^^            ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn try_get(&self) -> Result<SemaphoreGuard<'_, T>, SemaphoreError> {
[INFO] [stdout]    |                                                    +++
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/raw.rs:73:20
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn try_get(&self) -> Result<SemaphoreGuard, crate::SemaphoreError> {
[INFO] [stdout]    |                    ^^^^^            ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 73 |     pub fn try_get(&self) -> Result<SemaphoreGuard<'_>, crate::SemaphoreError> {
[INFO] [stdout]    |                                                   ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/wrapper.rs:33:16
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn get(&self) -> SemaphoreGuard<T> {
[INFO] [stdout]    |                ^^^^^     ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                |
[INFO] [stdout]    |                the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn get(&self) -> SemaphoreGuard<'_, T> {
[INFO] [stdout]    |                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]   --> src/wrapper.rs:53:20
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn try_get(&self) -> Result<SemaphoreGuard<T>, SemaphoreError> {
[INFO] [stdout]    |                    ^^^^^            ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stdout]    |                    |
[INFO] [stdout]    |                    the lifetime is elided here
[INFO] [stdout]    |
[INFO] [stdout]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]    |
[INFO] [stdout] 53 |     pub fn try_get(&self) -> Result<SemaphoreGuard<'_, T>, SemaphoreError> {
[INFO] [stdout]    |                                                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.36s
[INFO] running `Command { std: "docker" "inspect" "7d2e86e380b3eb93bc5aee09eca80df90bfbdf068e0bb3ab9b8c5dcc38acc3bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d2e86e380b3eb93bc5aee09eca80df90bfbdf068e0bb3ab9b8c5dcc38acc3bd", kill_on_drop: false }`
[INFO] [stdout] 7d2e86e380b3eb93bc5aee09eca80df90bfbdf068e0bb3ab9b8c5dcc38acc3bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 283a4f2f44e8e370863f1407c0d534e109fb667d53870b3d4b381aec1117e7be
[INFO] running `Command { std: "docker" "start" "-a" "283a4f2f44e8e370863f1407c0d534e109fb667d53870b3d4b381aec1117e7be", 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/raw.rs:73:20
[INFO] [stderr]    |
[INFO] [stderr] 73 |     pub fn try_get(&self) -> Result<SemaphoreGuard, crate::SemaphoreError> {
[INFO] [stderr]    |                    ^^^^^            ^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                    |
[INFO] [stderr]    |                    the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr]    = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 73 |     pub fn try_get(&self) -> Result<SemaphoreGuard<'_>, crate::SemaphoreError> {
[INFO] [stderr]    |                                                   ++++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/wrapper.rs:33:16
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn get(&self) -> SemaphoreGuard<T> {
[INFO] [stderr]    |                ^^^^^     ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                |
[INFO] [stderr]    |                the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 33 |     pub fn get(&self) -> SemaphoreGuard<'_, T> {
[INFO] [stderr]    |                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]   --> src/wrapper.rs:53:20
[INFO] [stderr]    |
[INFO] [stderr] 53 |     pub fn try_get(&self) -> Result<SemaphoreGuard<T>, SemaphoreError> {
[INFO] [stderr]    |                    ^^^^^            ^^^^^^^^^^^^^^^^^ the same lifetime is hidden here
[INFO] [stderr]    |                    |
[INFO] [stderr]    |                    the lifetime is elided here
[INFO] [stderr]    |
[INFO] [stderr]    = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stderr] help: use `'_` for type paths
[INFO] [stderr]    |
[INFO] [stderr] 53 |     pub fn try_get(&self) -> Result<SemaphoreGuard<'_, T>, SemaphoreError> {
[INFO] [stderr]    |                                                    +++
[INFO] [stderr] 
[INFO] [stderr] warning: `semaphorus` (lib) generated 4 warnings (run `cargo fix --lib -p semaphorus` to apply 4 suggestions)
[INFO] [stderr] warning: `semaphorus` (lib test) generated 4 warnings (4 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/semaphorus-d0245f80c9bef49e)
[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 0.01s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests semaphorus
[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-2025-10-28-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-32eb9528b34870b3.rlib -C embed-bitcode=no --cfg 'feature="default"' --cfg 'feature="std"' --cfg 'feature="wrapper"' --check-cfg 'cfg(docsrs,test)' --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 --no-capture to the harness.
[INFO] running `Command { std: "docker" "inspect" "283a4f2f44e8e370863f1407c0d534e109fb667d53870b3d4b381aec1117e7be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "283a4f2f44e8e370863f1407c0d534e109fb667d53870b3d4b381aec1117e7be", kill_on_drop: false }`
[INFO] [stdout] 283a4f2f44e8e370863f1407c0d534e109fb667d53870b3d4b381aec1117e7be
