[INFO] fetching crate ftswarm_serial 0.2.5...
[INFO] testing ftswarm_serial-0.2.5 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate ftswarm_serial 0.2.5 into /workspace/builds/worker-3-tc2/source
[INFO] started tweaking crates.io crate ftswarm_serial 0.2.5
[INFO] finished tweaking crates.io crate ftswarm_serial 0.2.5
[INFO] tweaked toml for crates.io crate ftswarm_serial 0.2.5 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate ftswarm_serial 0.2.5 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] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 25 packages to latest compatible versions
[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-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 594369b1e583d999d3320b861adf530307f82554ef353be4fa36d856464f6779
[INFO] running `Command { std: "docker" "start" "-a" "594369b1e583d999d3320b861adf530307f82554ef353be4fa36d856464f6779", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "594369b1e583d999d3320b861adf530307f82554ef353be4fa36d856464f6779", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "594369b1e583d999d3320b861adf530307f82554ef353be4fa36d856464f6779", kill_on_drop: false }`
[INFO] [stdout] 594369b1e583d999d3320b861adf530307f82554ef353be4fa36d856464f6779
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 71572566e1795763497337268c58bbf4196a2194e23130089db46234a3d52174
[INFO] running `Command { std: "docker" "start" "-a" "71572566e1795763497337268c58bbf4196a2194e23130089db46234a3d52174", kill_on_drop: false }`
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling syn v2.0.106
[INFO] [stderr]    Compiling nix v0.26.4
[INFO] [stderr]    Compiling libudev v0.3.0
[INFO] [stderr]    Compiling thiserror-impl v2.0.17
[INFO] [stderr]    Compiling thiserror v2.0.17
[INFO] [stderr]    Compiling unescaper v0.1.6
[INFO] [stderr]    Compiling serialport v4.7.3
[INFO] [stderr]    Compiling ftswarm_serial v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.60s
[INFO] running `Command { std: "docker" "inspect" "71572566e1795763497337268c58bbf4196a2194e23130089db46234a3d52174", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71572566e1795763497337268c58bbf4196a2194e23130089db46234a3d52174", kill_on_drop: false }`
[INFO] [stdout] 71572566e1795763497337268c58bbf4196a2194e23130089db46234a3d52174
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 09f577e3a162254ead157f519fbbe44c16ade867b153fea64e00bccf751d7f6e
[INFO] running `Command { std: "docker" "start" "-a" "09f577e3a162254ead157f519fbbe44c16ade867b153fea64e00bccf751d7f6e", kill_on_drop: false }`
[INFO] [stderr]    Compiling ftswarm_serial v0.2.5 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.34s
[INFO] running `Command { std: "docker" "inspect" "09f577e3a162254ead157f519fbbe44c16ade867b153fea64e00bccf751d7f6e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09f577e3a162254ead157f519fbbe44c16ade867b153fea64e00bccf751d7f6e", kill_on_drop: false }`
[INFO] [stdout] 09f577e3a162254ead157f519fbbe44c16ade867b153fea64e00bccf751d7f6e
[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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 17596b6b42abebfe09692991e0bf4352494481d9db40dfcf3311b38322902120
[INFO] running `Command { std: "docker" "start" "-a" "17596b6b42abebfe09692991e0bf4352494481d9db40dfcf3311b38322902120", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/ftswarm_serial-0c23e54e9d035dbd)
[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 ftswarm_serial
[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" "17596b6b42abebfe09692991e0bf4352494481d9db40dfcf3311b38322902120", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17596b6b42abebfe09692991e0bf4352494481d9db40dfcf3311b38322902120", kill_on_drop: false }`
[INFO] [stdout] 17596b6b42abebfe09692991e0bf4352494481d9db40dfcf3311b38322902120