[INFO] fetching crate rhythm-core 0.2.0...
[INFO] testing rhythm-core-0.2.0 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate rhythm-core 0.2.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate rhythm-core 0.2.0
[INFO] finished tweaking crates.io crate rhythm-core 0.2.0
[INFO] tweaked toml for crates.io crate rhythm-core 0.2.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rhythm-core 0.2.0 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 7 packages to latest compatible versions
[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-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] cb93bac807c053052bcbd904ee272dad7fdbd6ee395cc81bf86e37bf1d1c0319
[INFO] running `Command { std: "docker" "start" "-a" "cb93bac807c053052bcbd904ee272dad7fdbd6ee395cc81bf86e37bf1d1c0319", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb93bac807c053052bcbd904ee272dad7fdbd6ee395cc81bf86e37bf1d1c0319", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb93bac807c053052bcbd904ee272dad7fdbd6ee395cc81bf86e37bf1d1c0319", kill_on_drop: false }`
[INFO] [stdout] cb93bac807c053052bcbd904ee272dad7fdbd6ee395cc81bf86e37bf1d1c0319
[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] cee9377e2b3140a5e00c0c01eccd509df236a7087d36b6e4715a91f164fc89e9
[INFO] running `Command { std: "docker" "start" "-a" "cee9377e2b3140a5e00c0c01eccd509df236a7087d36b6e4715a91f164fc89e9", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.228
[INFO] [stderr]    Compiling rhythm-core v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.78s
[INFO] running `Command { std: "docker" "inspect" "cee9377e2b3140a5e00c0c01eccd509df236a7087d36b6e4715a91f164fc89e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cee9377e2b3140a5e00c0c01eccd509df236a7087d36b6e4715a91f164fc89e9", kill_on_drop: false }`
[INFO] [stdout] cee9377e2b3140a5e00c0c01eccd509df236a7087d36b6e4715a91f164fc89e9
[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] df200e963c8ef75b473180492f1feadd13e43accbc67b9e3e3a6ce2c1381e743
[INFO] running `Command { std: "docker" "start" "-a" "df200e963c8ef75b473180492f1feadd13e43accbc67b9e3e3a6ce2c1381e743", kill_on_drop: false }`
[INFO] [stderr]    Compiling rhythm-core v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.72s
[INFO] running `Command { std: "docker" "inspect" "df200e963c8ef75b473180492f1feadd13e43accbc67b9e3e3a6ce2c1381e743", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df200e963c8ef75b473180492f1feadd13e43accbc67b9e3e3a6ce2c1381e743", kill_on_drop: false }`
[INFO] [stdout] df200e963c8ef75b473180492f1feadd13e43accbc67b9e3e3a6ce2c1381e743
[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] ea97d043d6053c6284a0e02be19785d0dd8e4a4044d990fe84c1f4f43c1924ad
[INFO] running `Command { std: "docker" "start" "-a" "ea97d043d6053c6284a0e02be19785d0dd8e4a4044d990fe84c1f4f43c1924ad", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/rhythm_core-e952919111104c4b)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test rhythm::tests::test_single_note ... ok
[INFO] [stdout] test rhythm::tests::test_combo_note ... ok
[INFO] [stderr]    Doc-tests rhythm_core
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[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" "ea97d043d6053c6284a0e02be19785d0dd8e4a4044d990fe84c1f4f43c1924ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea97d043d6053c6284a0e02be19785d0dd8e4a4044d990fe84c1f4f43c1924ad", kill_on_drop: false }`
[INFO] [stdout] ea97d043d6053c6284a0e02be19785d0dd8e4a4044d990fe84c1f4f43c1924ad
