[INFO] fetching crate ringkernel-metal 0.4.2...
[INFO] testing ringkernel-metal-0.4.2 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate ringkernel-metal 0.4.2 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate ringkernel-metal 0.4.2
[INFO] finished tweaking crates.io crate ringkernel-metal 0.4.2
[INFO] tweaked toml for crates.io crate ringkernel-metal 0.4.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ringkernel-metal 0.4.2 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] crate crates.io crate ringkernel-metal 0.4.2 already has a lockfile, it will not be regenerated
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 6aea64ea4b45e5b4e57fb2c7c5ffcc02355940067cd59810d6b8e5b64dfd9a04
[INFO] running `Command { std: "docker" "start" "-a" "6aea64ea4b45e5b4e57fb2c7c5ffcc02355940067cd59810d6b8e5b64dfd9a04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6aea64ea4b45e5b4e57fb2c7c5ffcc02355940067cd59810d6b8e5b64dfd9a04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6aea64ea4b45e5b4e57fb2c7c5ffcc02355940067cd59810d6b8e5b64dfd9a04", kill_on_drop: false }`
[INFO] [stdout] 6aea64ea4b45e5b4e57fb2c7c5ffcc02355940067cd59810d6b8e5b64dfd9a04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 67480e1fafdac6a01b12e85243fb76e943a15637c93b1bcc9e5e9423bc3e1edb
[INFO] running `Command { std: "docker" "start" "-a" "67480e1fafdac6a01b12e85243fb76e943a15637c93b1bcc9e5e9423bc3e1edb", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.42
[INFO] [stderr]    Compiling libc v0.2.177
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling zerocopy v0.8.30
[INFO] [stderr]    Compiling bytecheck v0.6.12
[INFO] [stderr]    Compiling simdutf8 v0.1.5
[INFO] [stderr]    Compiling rend v0.4.2
[INFO] [stderr]    Compiling rkyv v0.7.45
[INFO] [stderr]    Compiling tracing-core v0.1.35
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.18
[INFO] [stderr]    Compiling crossbeam-queue v0.3.12
[INFO] [stderr]    Compiling crossbeam-channel v0.5.15
[INFO] [stderr]    Compiling bytes v1.11.1
[INFO] [stderr]    Compiling byteorder v1.5.0
[INFO] [stderr]    Compiling seahash v4.1.0
[INFO] [stderr]    Compiling inventory v0.3.21
[INFO] [stderr]    Compiling crossbeam-deque v0.8.6
[INFO] [stderr]    Compiling syn v2.0.111
[INFO] [stderr]    Compiling crossbeam v0.8.4
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling parking_lot_core v0.9.12
[INFO] [stderr]    Compiling mio v1.1.0
[INFO] [stderr]    Compiling socket2 v0.6.1
[INFO] [stderr]    Compiling signal-hook-registry v1.4.7
[INFO] [stderr]    Compiling ahash v0.7.8
[INFO] [stderr]    Compiling parking_lot v0.12.5
[INFO] [stderr]    Compiling hashbrown v0.12.3
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling ppv-lite86 v0.2.21
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling uuid v1.18.1
[INFO] [stderr]    Compiling ptr_meta_derive v0.1.4
[INFO] [stderr]    Compiling bytecheck_derive v0.6.12
[INFO] [stderr]    Compiling rkyv_derive v0.7.45
[INFO] [stderr]    Compiling ptr_meta v0.1.4
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling bytemuck_derive v1.10.2
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]    Compiling tokio-macros v2.6.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.31
[INFO] [stderr]    Compiling zerocopy-derive v0.7.35
[INFO] [stderr]    Compiling async-trait v0.1.89
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling tokio v1.48.0
[INFO] [stderr]    Compiling zerocopy v0.7.35
[INFO] [stderr]    Compiling tracing v0.1.41
[INFO] [stderr]    Compiling bytemuck v1.24.0
[INFO] [stderr]    Compiling thiserror v2.0.17
[INFO] [stderr]    Compiling atomic v0.6.1
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling ringkernel-core v0.4.2
[INFO] [stderr]    Compiling ringkernel-metal v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 22.72s
[INFO] running `Command { std: "docker" "inspect" "67480e1fafdac6a01b12e85243fb76e943a15637c93b1bcc9e5e9423bc3e1edb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67480e1fafdac6a01b12e85243fb76e943a15637c93b1bcc9e5e9423bc3e1edb", kill_on_drop: false }`
[INFO] [stdout] 67480e1fafdac6a01b12e85243fb76e943a15637c93b1bcc9e5e9423bc3e1edb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 42d54902cdef0a4cdf89788bb2081a45518ab40e09731a2ce3cdf329ab12ca36
[INFO] running `Command { std: "docker" "start" "-a" "42d54902cdef0a4cdf89788bb2081a45518ab40e09731a2ce3cdf329ab12ca36", kill_on_drop: false }`
[INFO] [stderr]    Compiling tokio v1.48.0
[INFO] [stderr]    Compiling ringkernel-core v0.4.2
[INFO] [stderr]    Compiling ringkernel-metal v0.4.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 12.87s
[INFO] running `Command { std: "docker" "inspect" "42d54902cdef0a4cdf89788bb2081a45518ab40e09731a2ce3cdf329ab12ca36", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42d54902cdef0a4cdf89788bb2081a45518ab40e09731a2ce3cdf329ab12ca36", kill_on_drop: false }`
[INFO] [stdout] 42d54902cdef0a4cdf89788bb2081a45518ab40e09731a2ce3cdf329ab12ca36
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f4640569f160ae6e193f473af48c745dcaabc15c88014c2ea19d8bb2553baff3
[INFO] running `Command { std: "docker" "start" "-a" "f4640569f160ae6e193f473af48c745dcaabc15c88014c2ea19d8bb2553baff3", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ringkernel_metal-c14b6b3aebb1df06)
[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 ringkernel_metal
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 20) ... ignored
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f4640569f160ae6e193f473af48c745dcaabc15c88014c2ea19d8bb2553baff3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4640569f160ae6e193f473af48c745dcaabc15c88014c2ea19d8bb2553baff3", kill_on_drop: false }`
[INFO] [stdout] f4640569f160ae6e193f473af48c745dcaabc15c88014c2ea19d8bb2553baff3
