[INFO] fetching crate ur20-modbus 0.5.0...
[INFO] testing ur20-modbus-0.5.0 against beta-2025-10-28 for beta-1.92-2
[INFO] extracting crate ur20-modbus 0.5.0 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate ur20-modbus 0.5.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate ur20-modbus 0.5.0
[INFO] tweaked toml for crates.io crate ur20-modbus 0.5.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ur20-modbus 0.5.0 on toolchain beta-2025-10-28
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate ur20-modbus 0.5.0 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" "+beta-2025-10-28" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8dfc1dae64cdda205fc6e0c6645010db5a81d5436f47450c5fab9365660be185
[INFO] running `Command { std: "docker" "start" "-a" "8dfc1dae64cdda205fc6e0c6645010db5a81d5436f47450c5fab9365660be185", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8dfc1dae64cdda205fc6e0c6645010db5a81d5436f47450c5fab9365660be185", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8dfc1dae64cdda205fc6e0c6645010db5a81d5436f47450c5fab9365660be185", kill_on_drop: false }`
[INFO] [stdout] 8dfc1dae64cdda205fc6e0c6645010db5a81d5436f47450c5fab9365660be185
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c501be4223829f673eea798df89f836382ab089db912f8b7414f1f1c572b1d04
[INFO] running `Command { std: "docker" "start" "-a" "c501be4223829f673eea798df89f836382ab089db912f8b7414f1f1c572b1d04", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.95
[INFO] [stderr]    Compiling unicode-ident v1.0.18
[INFO] [stderr]    Compiling libc v0.2.172
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling thiserror v2.0.12
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling log v0.4.27
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]    Compiling syn v2.0.101
[INFO] [stderr]    Compiling socket2 v0.5.9
[INFO] [stderr]    Compiling mio v1.0.4
[INFO] [stderr]    Compiling tokio v1.45.1
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]    Compiling async-trait v0.1.88
[INFO] [stderr]    Compiling num-derive v0.4.2
[INFO] [stderr]    Compiling tokio-util v0.7.15
[INFO] [stderr]    Compiling ur20 v0.6.0
[INFO] [stderr]    Compiling tokio-modbus v0.16.1
[INFO] [stderr]    Compiling ur20-modbus v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.14s
[INFO] running `Command { std: "docker" "inspect" "c501be4223829f673eea798df89f836382ab089db912f8b7414f1f1c572b1d04", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c501be4223829f673eea798df89f836382ab089db912f8b7414f1f1c572b1d04", kill_on_drop: false }`
[INFO] [stdout] c501be4223829f673eea798df89f836382ab089db912f8b7414f1f1c572b1d04
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1fcbdea3c7d29057610285964c545a89551998332bb5c27eaa19a3f23d202559
[INFO] running `Command { std: "docker" "start" "-a" "1fcbdea3c7d29057610285964c545a89551998332bb5c27eaa19a3f23d202559", kill_on_drop: false }`
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
[INFO] [stderr]    Compiling smallvec v1.15.0
[INFO] [stderr]    Compiling arc-swap v0.4.4
[INFO] [stderr]    Compiling lock_api v0.4.6
[INFO] [stderr]    Compiling tokio-macros v2.5.0
[INFO] [stderr]    Compiling signal-hook-registry v1.2.0
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling tokio v1.45.1
[INFO] [stderr]    Compiling tokio-util v0.7.15
[INFO] [stderr]    Compiling tokio-modbus v0.16.1
[INFO] [stderr]    Compiling ur20-modbus v0.5.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 13.02s
[INFO] running `Command { std: "docker" "inspect" "1fcbdea3c7d29057610285964c545a89551998332bb5c27eaa19a3f23d202559", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1fcbdea3c7d29057610285964c545a89551998332bb5c27eaa19a3f23d202559", kill_on_drop: false }`
[INFO] [stdout] 1fcbdea3c7d29057610285964c545a89551998332bb5c27eaa19a3f23d202559
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-10-28" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] b478eebbaca3ce14e5a2c3c75ea2fb72a7f57d80ba27f100fd610e50e0aed721
[INFO] running `Command { std: "docker" "start" "-a" "b478eebbaca3ce14e5a2c3c75ea2fb72a7f57d80ba27f100fd610e50e0aed721", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ur20_modbus-3e69f93bc5d2d0ca)
[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 ur20_modbus
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test src/lib.rs - (line 5) - compile ... 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] [stdout] all doctests ran in 1.01s; merged doctests compilation took 1.00s
[INFO] running `Command { std: "docker" "inspect" "b478eebbaca3ce14e5a2c3c75ea2fb72a7f57d80ba27f100fd610e50e0aed721", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b478eebbaca3ce14e5a2c3c75ea2fb72a7f57d80ba27f100fd610e50e0aed721", kill_on_drop: false }`
[INFO] [stdout] b478eebbaca3ce14e5a2c3c75ea2fb72a7f57d80ba27f100fd610e50e0aed721