[INFO] fetching crate snake_tuner 0.5.3...
[INFO] testing snake_tuner-0.5.3 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate snake_tuner 0.5.3 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate snake_tuner 0.5.3
[INFO] finished tweaking crates.io crate snake_tuner 0.5.3
[INFO] tweaked toml for crates.io crate snake_tuner 0.5.3 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate snake_tuner 0.5.3 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 32 packages to latest compatible versions
[INFO] [stderr]       Adding nalgebra v0.32.6 (available: v0.34.2)
[INFO] [stderr]       Adding rand v0.8.6 (available: v0.10.1)
[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]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 7c791545f7d500cd68b1b2830db30a8768386dd7eba39492ce5da70970e7d614
[INFO] running `Command { std: "docker" "start" "-a" "7c791545f7d500cd68b1b2830db30a8768386dd7eba39492ce5da70970e7d614", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c791545f7d500cd68b1b2830db30a8768386dd7eba39492ce5da70970e7d614", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c791545f7d500cd68b1b2830db30a8768386dd7eba39492ce5da70970e7d614", kill_on_drop: false }`
[INFO] [stdout] 7c791545f7d500cd68b1b2830db30a8768386dd7eba39492ce5da70970e7d614
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] fe4277ce624a33c823bb2a80eeae54fa4832d1a889e0381e539caf5458f305f9
[INFO] running `Command { std: "docker" "start" "-a" "fe4277ce624a33c823bb2a80eeae54fa4832d1a889e0381e539caf5458f305f9", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.186
[INFO] [stderr]    Compiling approx v0.5.1
[INFO] [stderr]    Compiling num-complex v0.4.6
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling nalgebra-macros v0.2.2
[INFO] [stderr]    Compiling num-rational v0.4.2
[INFO] [stderr]    Compiling simba v0.8.1
[INFO] [stderr]    Compiling getrandom v0.2.17
[INFO] [stderr]    Compiling rand_core v0.6.4
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.6
[INFO] [stderr]    Compiling rand_distr v0.4.3
[INFO] [stderr]    Compiling nalgebra v0.32.6
[INFO] [stderr]    Compiling snake_tuner v0.5.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 16.03s
[INFO] running `Command { std: "docker" "inspect" "fe4277ce624a33c823bb2a80eeae54fa4832d1a889e0381e539caf5458f305f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fe4277ce624a33c823bb2a80eeae54fa4832d1a889e0381e539caf5458f305f9", kill_on_drop: false }`
[INFO] [stdout] fe4277ce624a33c823bb2a80eeae54fa4832d1a889e0381e539caf5458f305f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 568135c5bfb0f29803d17c9480fff67f53e2d3b292ea1c6e7ea28640e36c67c3
[INFO] running `Command { std: "docker" "start" "-a" "568135c5bfb0f29803d17c9480fff67f53e2d3b292ea1c6e7ea28640e36c67c3", kill_on_drop: false }`
[INFO] [stderr]    Compiling snake_tuner v0.5.3 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.60s
[INFO] running `Command { std: "docker" "inspect" "568135c5bfb0f29803d17c9480fff67f53e2d3b292ea1c6e7ea28640e36c67c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "568135c5bfb0f29803d17c9480fff67f53e2d3b292ea1c6e7ea28640e36c67c3", kill_on_drop: false }`
[INFO] [stdout] 568135c5bfb0f29803d17c9480fff67f53e2d3b292ea1c6e7ea28640e36c67c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 5d94880ca2f47b91252c4339a9cc3e57e5ceb8e29b9a5d3940aa22fc9c1848d6
[INFO] running `Command { std: "docker" "start" "-a" "5d94880ca2f47b91252c4339a9cc3e57e5ceb8e29b9a5d3940aa22fc9c1848d6", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/snake_tuner-615e2f189578162f)
[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 snake_tuner
[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" "5d94880ca2f47b91252c4339a9cc3e57e5ceb8e29b9a5d3940aa22fc9c1848d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d94880ca2f47b91252c4339a9cc3e57e5ceb8e29b9a5d3940aa22fc9c1848d6", kill_on_drop: false }`
[INFO] [stdout] 5d94880ca2f47b91252c4339a9cc3e57e5ceb8e29b9a5d3940aa22fc9c1848d6
