[INFO] fetching crate quack_engine_core 0.0.1...
[INFO] testing quack_engine_core-0.0.1 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate quack_engine_core 0.0.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate quack_engine_core 0.0.1
[INFO] finished tweaking crates.io crate quack_engine_core 0.0.1
[INFO] tweaked toml for crates.io crate quack_engine_core 0.0.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate quack_engine_core 0.0.1 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] 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 3e1dbce20ea49cb04358539b5407b005e2ea0574e5fb4a021cd60ccfcf39080b
[INFO] running `Command { std: "docker" "start" "-a" "3e1dbce20ea49cb04358539b5407b005e2ea0574e5fb4a021cd60ccfcf39080b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e1dbce20ea49cb04358539b5407b005e2ea0574e5fb4a021cd60ccfcf39080b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e1dbce20ea49cb04358539b5407b005e2ea0574e5fb4a021cd60ccfcf39080b", kill_on_drop: false }`
[INFO] [stdout] 3e1dbce20ea49cb04358539b5407b005e2ea0574e5fb4a021cd60ccfcf39080b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] cbd22d90b43091397f290ff8d7fcb97e25b541c6492f61ff1469c1c00d7060af
[INFO] running `Command { std: "docker" "start" "-a" "cbd22d90b43091397f290ff8d7fcb97e25b541c6492f61ff1469c1c00d7060af", kill_on_drop: false }`
[INFO] [stderr]    Compiling quack_engine_core v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] running `Command { std: "docker" "inspect" "cbd22d90b43091397f290ff8d7fcb97e25b541c6492f61ff1469c1c00d7060af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cbd22d90b43091397f290ff8d7fcb97e25b541c6492f61ff1469c1c00d7060af", kill_on_drop: false }`
[INFO] [stdout] cbd22d90b43091397f290ff8d7fcb97e25b541c6492f61ff1469c1c00d7060af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 98922f90ac41f8ca8252243f76076ac8957cfa09e234d7ff2a1cf4b5689319bc
[INFO] running `Command { std: "docker" "start" "-a" "98922f90ac41f8ca8252243f76076ac8957cfa09e234d7ff2a1cf4b5689319bc", kill_on_drop: false }`
[INFO] [stderr]    Compiling quack_engine_core v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "98922f90ac41f8ca8252243f76076ac8957cfa09e234d7ff2a1cf4b5689319bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98922f90ac41f8ca8252243f76076ac8957cfa09e234d7ff2a1cf4b5689319bc", kill_on_drop: false }`
[INFO] [stdout] 98922f90ac41f8ca8252243f76076ac8957cfa09e234d7ff2a1cf4b5689319bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] ab794a8760366fd17aa203370a7300f48f3219dfaf12207fc971d4977289f760
[INFO] running `Command { std: "docker" "start" "-a" "ab794a8760366fd17aa203370a7300f48f3219dfaf12207fc971d4977289f760", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/quack_engine_core-afc799da61f7bcce)
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test tests::it_works ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests quack_engine_core
[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" "ab794a8760366fd17aa203370a7300f48f3219dfaf12207fc971d4977289f760", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab794a8760366fd17aa203370a7300f48f3219dfaf12207fc971d4977289f760", kill_on_drop: false }`
[INFO] [stdout] ab794a8760366fd17aa203370a7300f48f3219dfaf12207fc971d4977289f760
