[INFO] fetching crate halfling 0.8.0...
[INFO] checking halfling-0.8.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate halfling 0.8.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate halfling 0.8.0
[INFO] finished tweaking crates.io crate halfling 0.8.0
[INFO] tweaked toml for crates.io crate halfling 0.8.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate halfling 0.8.0 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate halfling 0.8.0 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 56f82a154da8d640b69ed4b9ca0ffe620151460ac6d04d8837f2fe22c09cc30f
[INFO] running `Command { std: "docker" "start" "-a" "56f82a154da8d640b69ed4b9ca0ffe620151460ac6d04d8837f2fe22c09cc30f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "56f82a154da8d640b69ed4b9ca0ffe620151460ac6d04d8837f2fe22c09cc30f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56f82a154da8d640b69ed4b9ca0ffe620151460ac6d04d8837f2fe22c09cc30f", kill_on_drop: false }`
[INFO] [stdout] 56f82a154da8d640b69ed4b9ca0ffe620151460ac6d04d8837f2fe22c09cc30f
[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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8a3cb95bc95f0f4d54c96999fe394dde0f8f4a3bb65679f00caffbdb291d882e
[INFO] running `Command { std: "docker" "start" "-a" "8a3cb95bc95f0f4d54c96999fe394dde0f8f4a3bb65679f00caffbdb291d882e", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.39
[INFO] [stderr]    Compiling syn v2.0.99
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]     Checking thiserror v2.0.12
[INFO] [stderr]     Checking halfling v0.8.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/internal.rs:74:18
[INFO] [stdout]    |
[INFO] [stdout] 74 |         unsafe { core::mem::transmute(int) }
[INFO] [stdout]    |                  --------------------^^^^^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  help: replace this with: `u8::cast_signed`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary transmute
[INFO] [stdout]   --> src/internal.rs:74:18
[INFO] [stdout]    |
[INFO] [stdout] 74 |         unsafe { core::mem::transmute(int) }
[INFO] [stdout]    |                  --------------------^^^^^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  help: replace this with: `u8::cast_signed`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unnecessary_transmutes)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.38s
[INFO] running `Command { std: "docker" "inspect" "8a3cb95bc95f0f4d54c96999fe394dde0f8f4a3bb65679f00caffbdb291d882e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8a3cb95bc95f0f4d54c96999fe394dde0f8f4a3bb65679f00caffbdb291d882e", kill_on_drop: false }`
[INFO] [stdout] 8a3cb95bc95f0f4d54c96999fe394dde0f8f4a3bb65679f00caffbdb291d882e