[INFO] fetching crate quickbacktrack 0.7.2...
[INFO] testing quickbacktrack-0.7.2 against beta-2026-04-21 for beta-1.96-2
[INFO] extracting crate quickbacktrack 0.7.2 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate quickbacktrack 0.7.2
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate quickbacktrack 0.7.2
[INFO] tweaked toml for crates.io crate quickbacktrack 0.7.2 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate quickbacktrack 0.7.2 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 quickbacktrack 0.7.2 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-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4a7b063e8b254f226b4f5a2f12f0b8c5d9d573dda08bc057b4786957e9490b23
[INFO] running `Command { std: "docker" "start" "-a" "4a7b063e8b254f226b4f5a2f12f0b8c5d9d573dda08bc057b4786957e9490b23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4a7b063e8b254f226b4f5a2f12f0b8c5d9d573dda08bc057b4786957e9490b23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a7b063e8b254f226b4f5a2f12f0b8c5d9d573dda08bc057b4786957e9490b23", kill_on_drop: false }`
[INFO] [stdout] 4a7b063e8b254f226b4f5a2f12f0b8c5d9d573dda08bc057b4786957e9490b23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] fcc0f528ad9da1e708ddf944827ab7bccc11d1744dd049f62bb516101ae38e71
[INFO] running `Command { std: "docker" "start" "-a" "fcc0f528ad9da1e708ddf944827ab7bccc11d1744dd049f62bb516101ae38e71", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling getrandom v0.3.4
[INFO] [stderr]    Compiling rand_core v0.9.3
[INFO] [stderr]    Compiling rand_chacha v0.9.0
[INFO] [stderr]    Compiling rand v0.9.2
[INFO] [stderr]    Compiling quickbacktrack v0.7.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.30s
[INFO] running `Command { std: "docker" "inspect" "fcc0f528ad9da1e708ddf944827ab7bccc11d1744dd049f62bb516101ae38e71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcc0f528ad9da1e708ddf944827ab7bccc11d1744dd049f62bb516101ae38e71", kill_on_drop: false }`
[INFO] [stdout] fcc0f528ad9da1e708ddf944827ab7bccc11d1744dd049f62bb516101ae38e71
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 9c8b7c2e7fd5423825de8ed4b9250a80bb04df8bf04eced0b54491e43dbec677
[INFO] running `Command { std: "docker" "start" "-a" "9c8b7c2e7fd5423825de8ed4b9250a80bb04df8bf04eced0b54491e43dbec677", kill_on_drop: false }`
[INFO] [stderr]    Compiling quickbacktrack v0.7.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.63s
[INFO] running `Command { std: "docker" "inspect" "9c8b7c2e7fd5423825de8ed4b9250a80bb04df8bf04eced0b54491e43dbec677", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9c8b7c2e7fd5423825de8ed4b9250a80bb04df8bf04eced0b54491e43dbec677", kill_on_drop: false }`
[INFO] [stdout] 9c8b7c2e7fd5423825de8ed4b9250a80bb04df8bf04eced0b54491e43dbec677
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 910c925b3fc19322615e49d14b2f71b3be6cefa22d17f1e71f2ea3f802e0dbf1
[INFO] running `Command { std: "docker" "start" "-a" "910c925b3fc19322615e49d14b2f71b3be6cefa22d17f1e71f2ea3f802e0dbf1", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/quickbacktrack-7951d4c97079762f)
[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 quickbacktrack
[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" "910c925b3fc19322615e49d14b2f71b3be6cefa22d17f1e71f2ea3f802e0dbf1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "910c925b3fc19322615e49d14b2f71b3be6cefa22d17f1e71f2ea3f802e0dbf1", kill_on_drop: false }`
[INFO] [stdout] 910c925b3fc19322615e49d14b2f71b3be6cefa22d17f1e71f2ea3f802e0dbf1
