[INFO] fetching crate libpool 0.1.0...
[INFO] testing libpool-0.1.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate libpool 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate libpool 0.1.0
[INFO] finished tweaking crates.io crate libpool 0.1.0
[INFO] tweaked toml for crates.io crate libpool 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate libpool 0.1.0 on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "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-2025-09-21" "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-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb7abd8489e218d6600d13f62b8e38fa4208c7f744518197d4d1d820de936f90
[INFO] running `Command { std: "docker" "start" "-a" "cb7abd8489e218d6600d13f62b8e38fa4208c7f744518197d4d1d820de936f90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb7abd8489e218d6600d13f62b8e38fa4208c7f744518197d4d1d820de936f90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb7abd8489e218d6600d13f62b8e38fa4208c7f744518197d4d1d820de936f90", kill_on_drop: false }`
[INFO] [stdout] cb7abd8489e218d6600d13f62b8e38fa4208c7f744518197d4d1d820de936f90
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] caaf9c80f41e6d115d84cdc9fcd60a967e02d59bc8e5660dc3a8c8fb45fe59d3
[INFO] running `Command { std: "docker" "start" "-a" "caaf9c80f41e6d115d84cdc9fcd60a967e02d59bc8e5660dc3a8c8fb45fe59d3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libpool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/lib.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 72 | struct Worker {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 73 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "caaf9c80f41e6d115d84cdc9fcd60a967e02d59bc8e5660dc3a8c8fb45fe59d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "caaf9c80f41e6d115d84cdc9fcd60a967e02d59bc8e5660dc3a8c8fb45fe59d3", kill_on_drop: false }`
[INFO] [stdout] caaf9c80f41e6d115d84cdc9fcd60a967e02d59bc8e5660dc3a8c8fb45fe59d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3061be2df50f6993ade963d2020670b63abb5107379497d951156c179e29a1a8
[INFO] running `Command { std: "docker" "start" "-a" "3061be2df50f6993ade963d2020670b63abb5107379497d951156c179e29a1a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libpool v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/lib.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 72 | struct Worker {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 73 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `id` is never read
[INFO] [stdout]   --> src/lib.rs:73:5
[INFO] [stdout]    |
[INFO] [stdout] 72 | struct Worker {
[INFO] [stdout]    |        ------ field in this struct
[INFO] [stdout] 73 |     id: usize,
[INFO] [stdout]    |     ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.55s
[INFO] running `Command { std: "docker" "inspect" "3061be2df50f6993ade963d2020670b63abb5107379497d951156c179e29a1a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3061be2df50f6993ade963d2020670b63abb5107379497d951156c179e29a1a8", kill_on_drop: false }`
[INFO] [stdout] 3061be2df50f6993ade963d2020670b63abb5107379497d951156c179e29a1a8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 031de2c877dc7430ef532c0d123a50b897eebef46c6844993a5c966fd18167f4
[INFO] running `Command { std: "docker" "start" "-a" "031de2c877dc7430ef532c0d123a50b897eebef46c6844993a5c966fd18167f4", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: field `id` is never read
[INFO] [stdout] running 0 tests
[INFO] [stderr]   --> src/lib.rs:73:5
[INFO] [stdout] 
[INFO] [stderr]    |
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stderr] 72 | struct Worker {
[INFO] [stdout] 
[INFO] [stderr]    |        ------ field in this struct
[INFO] [stderr] 73 |     id: usize,
[INFO] [stderr]    |     ^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `libpool` (lib) generated 1 warning
[INFO] [stderr] warning: `libpool` (lib test) generated 1 warning (1 duplicate)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/libpool-1c9255f6cde247d2)
[INFO] [stderr]    Doc-tests libpool
[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" "031de2c877dc7430ef532c0d123a50b897eebef46c6844993a5c966fd18167f4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "031de2c877dc7430ef532c0d123a50b897eebef46c6844993a5c966fd18167f4", kill_on_drop: false }`
[INFO] [stdout] 031de2c877dc7430ef532c0d123a50b897eebef46c6844993a5c966fd18167f4