[INFO] fetching crate sema 0.1.4...
[INFO] testing sema-0.1.4 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate sema 0.1.4 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate sema 0.1.4
[INFO] finished tweaking crates.io crate sema 0.1.4
[INFO] tweaked toml for crates.io crate sema 0.1.4 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate sema 0.1.4 on toolchain beta-2026-04-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "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-2026-04-21" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 18 packages to latest compatible versions
[INFO] [stderr]       Adding libc v0.1.12 (available: v0.2.186)
[INFO] [stderr]       Adding rand v0.3.23 (available: v0.10.1)
[INFO] [stderr]       Adding time v0.1.45 (available: v0.3.47)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (available: v0.10.2+wasi-snapshot-preview1)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2026-04-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 083ceecae7efc271781ddf4ae5b8e25187adee3e7d5d45b25d9114f2414d1017
[INFO] running `Command { std: "docker" "start" "-a" "083ceecae7efc271781ddf4ae5b8e25187adee3e7d5d45b25d9114f2414d1017", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "083ceecae7efc271781ddf4ae5b8e25187adee3e7d5d45b25d9114f2414d1017", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "083ceecae7efc271781ddf4ae5b8e25187adee3e7d5d45b25d9114f2414d1017", kill_on_drop: false }`
[INFO] [stdout] 083ceecae7efc271781ddf4ae5b8e25187adee3e7d5d45b25d9114f2414d1017
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4fb960e869fca0a9a0be9ef81fd92c356139e9124c7e1bdda8f791100a5ba558
[INFO] running `Command { std: "docker" "start" "-a" "4fb960e869fca0a9a0be9ef81fd92c356139e9124c7e1bdda8f791100a5ba558", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling libc v0.1.12
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling time v0.1.45
[INFO] [stderr]    Compiling rand v0.3.23
[INFO] [stderr]    Compiling sema v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/sys.rs:50:31
[INFO] [stdout]    |
[INFO] [stdout] 50 |     const ONE_WAITER: usize = (1 << NWAITERS_SHIFT);
[INFO] [stdout]    |                               ^                   ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 50 -     const ONE_WAITER: usize = (1 << NWAITERS_SHIFT);
[INFO] [stdout] 50 +     const ONE_WAITER: usize = 1 << NWAITERS_SHIFT ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/sys.rs:52:35
[INFO] [stdout]    |
[INFO] [stdout] 52 |     const NEG_ONE_WAITER: usize = (!0 << NWAITERS_SHIFT);
[INFO] [stdout]    |                                   ^                    ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 52 -     const NEG_ONE_WAITER: usize = (!0 << NWAITERS_SHIFT);
[INFO] [stdout] 52 +     const NEG_ONE_WAITER: usize = !0 << NWAITERS_SHIFT ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]   --> src/sys.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 66 |     extern {
[INFO] [stdout]    |     ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/sys.rs:157:13
[INFO] [stdout]     |
[INFO] [stdout] 157 |             try!(self.wait());
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/sys.rs:188:38
[INFO] [stdout]     |
[INFO] [stdout] 188 |                 let prev = self.data.compare_and_swap(d, d - 1, Ordering::Acquire);
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/sys.rs:226:42
[INFO] [stdout]     |
[INFO] [stdout] 226 |                     let prev = self.data.compare_and_swap(d, (d - 1) - ONE_WAITER, Ordering::Acquire);
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AsPointer` is never used
[INFO] [stdout]   --> src/sys.rs:98:18
[INFO] [stdout]    |
[INFO] [stdout] 98 |     unsafe trait AsPointer<T> {
[INFO] [stdout]    |                  ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (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/sys.rs:156:21
[INFO] [stdout]     |
[INFO] [stdout] 156 |         pub fn take(&self) -> Result<SemaphoreGuard, Error> {
[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] 156 |         pub fn take(&self) -> Result<SemaphoreGuard<'_>, Error> {
[INFO] [stdout]     |                                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.19s
[INFO] running `Command { std: "docker" "inspect" "4fb960e869fca0a9a0be9ef81fd92c356139e9124c7e1bdda8f791100a5ba558", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fb960e869fca0a9a0be9ef81fd92c356139e9124c7e1bdda8f791100a5ba558", kill_on_drop: false }`
[INFO] [stdout] 4fb960e869fca0a9a0be9ef81fd92c356139e9124c7e1bdda8f791100a5ba558
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 163eff7bddeef38316d81af6d64e8934462e3b42f64513ea0bac16f12a6227f2
[INFO] running `Command { std: "docker" "start" "-a" "163eff7bddeef38316d81af6d64e8934462e3b42f64513ea0bac16f12a6227f2", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr]    Compiling cfg_aliases v0.2.1
[INFO] [stderr]    Compiling bitflags v2.11.1
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/sys.rs:50:31
[INFO] [stdout]    |
[INFO] [stdout] 50 |     const ONE_WAITER: usize = (1 << NWAITERS_SHIFT);
[INFO] [stdout]    |                               ^                   ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 50 -     const ONE_WAITER: usize = (1 << NWAITERS_SHIFT);
[INFO] [stdout] 50 +     const ONE_WAITER: usize = 1 << NWAITERS_SHIFT ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/sys.rs:52:35
[INFO] [stdout]    |
[INFO] [stdout] 52 |     const NEG_ONE_WAITER: usize = (!0 << NWAITERS_SHIFT);
[INFO] [stdout]    |                                   ^                    ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 52 -     const NEG_ONE_WAITER: usize = (!0 << NWAITERS_SHIFT);
[INFO] [stdout] 52 +     const NEG_ONE_WAITER: usize = !0 << NWAITERS_SHIFT ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]   --> src/sys.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 66 |     extern {
[INFO] [stdout]    |     ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/sys.rs:157:13
[INFO] [stdout]     |
[INFO] [stdout] 157 |             try!(self.wait());
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/sys.rs:188:38
[INFO] [stdout]     |
[INFO] [stdout] 188 |                 let prev = self.data.compare_and_swap(d, d - 1, Ordering::Acquire);
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/sys.rs:226:42
[INFO] [stdout]     |
[INFO] [stdout] 226 |                     let prev = self.data.compare_and_swap(d, (d - 1) - ONE_WAITER, Ordering::Acquire);
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AsPointer` is never used
[INFO] [stdout]   --> src/sys.rs:98:18
[INFO] [stdout]    |
[INFO] [stdout] 98 |     unsafe trait AsPointer<T> {
[INFO] [stdout]    |                  ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (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/sys.rs:156:21
[INFO] [stdout]     |
[INFO] [stdout] 156 |         pub fn take(&self) -> Result<SemaphoreGuard, Error> {
[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] 156 |         pub fn take(&self) -> Result<SemaphoreGuard<'_>, Error> {
[INFO] [stdout]     |                                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling nix v0.31.2
[INFO] [stderr]    Compiling sema v0.1.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/sys.rs:50:31
[INFO] [stdout]    |
[INFO] [stdout] 50 |     const ONE_WAITER: usize = (1 << NWAITERS_SHIFT);
[INFO] [stdout]    |                               ^                   ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 50 -     const ONE_WAITER: usize = (1 << NWAITERS_SHIFT);
[INFO] [stdout] 50 +     const ONE_WAITER: usize = 1 << NWAITERS_SHIFT ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around assigned value
[INFO] [stdout]   --> src/sys.rs:52:35
[INFO] [stdout]    |
[INFO] [stdout] 52 |     const NEG_ONE_WAITER: usize = (!0 << NWAITERS_SHIFT);
[INFO] [stdout]    |                                   ^                    ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 52 -     const NEG_ONE_WAITER: usize = (!0 << NWAITERS_SHIFT);
[INFO] [stdout] 52 +     const NEG_ONE_WAITER: usize = !0 << NWAITERS_SHIFT ;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stdout]   --> src/sys.rs:66:5
[INFO] [stdout]    |
[INFO] [stdout] 66 |     extern {
[INFO] [stdout]    |     ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(missing_abi)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]    --> src/sys.rs:157:13
[INFO] [stdout]     |
[INFO] [stdout] 157 |             try!(self.wait());
[INFO] [stdout]     |             ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/sys.rs:188:38
[INFO] [stdout]     |
[INFO] [stdout] 188 |                 let prev = self.data.compare_and_swap(d, d - 1, Ordering::Acquire);
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stdout]    --> src/sys.rs:226:42
[INFO] [stdout]     |
[INFO] [stdout] 226 |                     let prev = self.data.compare_and_swap(d, (d - 1) - ONE_WAITER, Ordering::Acquire);
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait `AsPointer` is never used
[INFO] [stdout]   --> src/sys.rs:98:18
[INFO] [stdout]    |
[INFO] [stdout] 98 |     unsafe trait AsPointer<T> {
[INFO] [stdout]    |                  ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (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/sys.rs:156:21
[INFO] [stdout]     |
[INFO] [stdout] 156 |         pub fn take(&self) -> Result<SemaphoreGuard, Error> {
[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] 156 |         pub fn take(&self) -> Result<SemaphoreGuard<'_>, Error> {
[INFO] [stdout]     |                                                    ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.43s
[INFO] running `Command { std: "docker" "inspect" "163eff7bddeef38316d81af6d64e8934462e3b42f64513ea0bac16f12a6227f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "163eff7bddeef38316d81af6d64e8934462e3b42f64513ea0bac16f12a6227f2", kill_on_drop: false }`
[INFO] [stdout] 163eff7bddeef38316d81af6d64e8934462e3b42f64513ea0bac16f12a6227f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2026-04-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 82df752c125a4d4dac29f21964b67bafb56cbdd3eae571422363f3c83cee4d03
[INFO] running `Command { std: "docker" "start" "-a" "82df752c125a4d4dac29f21964b67bafb56cbdd3eae571422363f3c83cee4d03", kill_on_drop: false }`
[INFO] [stderr] warning: `package.edition` is unspecified, defaulting to `2015` while the latest is `2024`
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/sys.rs:50:31
[INFO] [stderr]    |
[INFO] [stderr] 50 |     const ONE_WAITER: usize = (1 << NWAITERS_SHIFT);
[INFO] [stderr]    |                               ^                   ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 50 -     const ONE_WAITER: usize = (1 << NWAITERS_SHIFT);
[INFO] [stderr] 50 +     const ONE_WAITER: usize = 1 << NWAITERS_SHIFT ;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/sys.rs:52:35
[INFO] [stderr]    |
[INFO] [stderr] 52 |     const NEG_ONE_WAITER: usize = (!0 << NWAITERS_SHIFT);
[INFO] [stderr]    |                                   ^                    ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 52 -     const NEG_ONE_WAITER: usize = (!0 << NWAITERS_SHIFT);
[INFO] [stderr] 52 +     const NEG_ONE_WAITER: usize = !0 << NWAITERS_SHIFT ;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: `extern` declarations without an explicit ABI are deprecated
[INFO] [stderr]   --> src/sys.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     extern {
[INFO] [stderr]    |     ^^^^^^ help: explicitly specify the "C" ABI: `extern "C"`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(missing_abi)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stderr]    --> src/sys.rs:157:13
[INFO] [stderr]     |
[INFO] [stderr] 157 |             try!(self.wait());
[INFO] [stderr]     |             ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/sys.rs:188:38
[INFO] [stderr]     |
[INFO] [stderr] 188 |                 let prev = self.data.compare_and_swap(d, d - 1, Ordering::Acquire);
[INFO] [stderr]     |                                      ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated method `std::sync::atomic::Atomic::<usize>::compare_and_swap`: Use `compare_exchange` or `compare_exchange_weak` instead
[INFO] [stderr]    --> src/sys.rs:226:42
[INFO] [stderr]     |
[INFO] [stderr] 226 |                     let prev = self.data.compare_and_swap(d, (d - 1) - ONE_WAITER, Ordering::Acquire);
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait `AsPointer` is never used
[INFO] [stderr]   --> src/sys.rs:98:18
[INFO] [stderr]    |
[INFO] [stderr] 98 |     unsafe trait AsPointer<T> {
[INFO] [stderr]    |                  ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stderr]    --> src/sys.rs:156:21
[INFO] [stderr]     |
[INFO] [stderr] 156 |         pub fn take(&self) -> Result<SemaphoreGuard, Error> {
[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] 156 |         pub fn take(&self) -> Result<SemaphoreGuard<'_>, Error> {
[INFO] [stderr]     |                                                    ++++
[INFO] [stderr] 
[INFO] [stderr] warning: `sema` (lib) generated 8 warnings (run `cargo fix --lib -p sema` to apply 4 suggestions)
[INFO] [stderr] warning: `sema` (lib test) generated 8 warnings (8 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/sema-7c007403d894cd0b)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests sema
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/sys.rs:50:31
[INFO] [stderr]    |
[INFO] [stderr] 50 |     const ONE_WAITER: usize = (1 << NWAITERS_SHIFT);
[INFO] [stderr]    |                               ^                   ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 50 -     const ONE_WAITER: usize = (1 << NWAITERS_SHIFT);
[INFO] [stderr] 50 +     const ONE_WAITER: usize = 1 << NWAITERS_SHIFT ;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around assigned value
[INFO] [stderr]   --> src/sys.rs:52:35
[INFO] [stderr]    |
[INFO] [stderr] 52 |     const NEG_ONE_WAITER: usize = (!0 << NWAITERS_SHIFT);
[INFO] [stderr]    |                                   ^                    ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 52 -     const NEG_ONE_WAITER: usize = (!0 << NWAITERS_SHIFT);
[INFO] [stderr] 52 +     const NEG_ONE_WAITER: usize = !0 << NWAITERS_SHIFT ;
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "82df752c125a4d4dac29f21964b67bafb56cbdd3eae571422363f3c83cee4d03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82df752c125a4d4dac29f21964b67bafb56cbdd3eae571422363f3c83cee4d03", kill_on_drop: false }`
[INFO] [stdout] 82df752c125a4d4dac29f21964b67bafb56cbdd3eae571422363f3c83cee4d03
