[INFO] fetching crate four-char-code 2.3.0...
[INFO] testing four-char-code-2.3.0 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate four-char-code 2.3.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate four-char-code 2.3.0
[INFO] finished tweaking crates.io crate four-char-code 2.3.0
[INFO] tweaked toml for crates.io crate four-char-code 2.3.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate four-char-code 2.3.0 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] crate crates.io crate four-char-code 2.3.0 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-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9eab1fbff84300cda03138ae73a090140627cca4999481caa21340c2e3ea48da
[INFO] running `Command { std: "docker" "start" "-a" "9eab1fbff84300cda03138ae73a090140627cca4999481caa21340c2e3ea48da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9eab1fbff84300cda03138ae73a090140627cca4999481caa21340c2e3ea48da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9eab1fbff84300cda03138ae73a090140627cca4999481caa21340c2e3ea48da", kill_on_drop: false }`
[INFO] [stdout] 9eab1fbff84300cda03138ae73a090140627cca4999481caa21340c2e3ea48da
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2d1d279c281ae485f3f5269fb5c98bb1c324d4bd3fe530a1214fb181f2d79755
[INFO] running `Command { std: "docker" "start" "-a" "2d1d279c281ae485f3f5269fb5c98bb1c324d4bd3fe530a1214fb181f2d79755", kill_on_drop: false }`
[INFO] [stderr]    Compiling four-char-code v2.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "2d1d279c281ae485f3f5269fb5c98bb1c324d4bd3fe530a1214fb181f2d79755", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2d1d279c281ae485f3f5269fb5c98bb1c324d4bd3fe530a1214fb181f2d79755", kill_on_drop: false }`
[INFO] [stdout] 2d1d279c281ae485f3f5269fb5c98bb1c324d4bd3fe530a1214fb181f2d79755
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 907c2768fb4cab91d1706fcb3392e5ce24ccf68e677f22e2e33758587441d782
[INFO] running `Command { std: "docker" "start" "-a" "907c2768fb4cab91d1706fcb3392e5ce24ccf68e677f22e2e33758587441d782", kill_on_drop: false }`
[INFO] [stderr]    Compiling four-char-code v2.3.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.49s
[INFO] running `Command { std: "docker" "inspect" "907c2768fb4cab91d1706fcb3392e5ce24ccf68e677f22e2e33758587441d782", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "907c2768fb4cab91d1706fcb3392e5ce24ccf68e677f22e2e33758587441d782", kill_on_drop: false }`
[INFO] [stdout] 907c2768fb4cab91d1706fcb3392e5ce24ccf68e677f22e2e33758587441d782
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5180b6ed1c72b7975c103d0901c54fcc8cff63e3a5e63b7639ca29f37be83cba
[INFO] running `Command { std: "docker" "start" "-a" "5180b6ed1c72b7975c103d0901c54fcc8cff63e3a5e63b7639ca29f37be83cba", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/four_char_code-93bfb0c64893cd3d)
[INFO] [stdout] running 3 tests
[INFO] [stdout] test tests::valid ... ok
[INFO] [stdout] test tests::format ... ok
[INFO] [stdout] test tests::invalid ... ok
[INFO] [stderr]    Doc-tests four_char_code
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.12s
[INFO] [stdout] 
[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" "5180b6ed1c72b7975c103d0901c54fcc8cff63e3a5e63b7639ca29f37be83cba", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5180b6ed1c72b7975c103d0901c54fcc8cff63e3a5e63b7639ca29f37be83cba", kill_on_drop: false }`
[INFO] [stdout] 5180b6ed1c72b7975c103d0901c54fcc8cff63e3a5e63b7639ca29f37be83cba