[INFO] fetching crate mcp2221 0.1.1...
[INFO] testing mcp2221-0.1.1 against beta-2025-09-21 for beta-1.91-3
[INFO] extracting crate mcp2221 0.1.1 into /workspace/builds/worker-6-tc2/source
[INFO] started tweaking crates.io crate mcp2221 0.1.1
[INFO] finished tweaking crates.io crate mcp2221 0.1.1
[INFO] tweaked toml for crates.io crate mcp2221 0.1.1 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate mcp2221 0.1.1 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 mcp2221 0.1.1 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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 2fbbfa5547f1c96ff1b04ed3ba9859c03f5a87e785f80abc5970839d3e62d1c0
[INFO] running `Command { std: "docker" "start" "-a" "2fbbfa5547f1c96ff1b04ed3ba9859c03f5a87e785f80abc5970839d3e62d1c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2fbbfa5547f1c96ff1b04ed3ba9859c03f5a87e785f80abc5970839d3e62d1c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2fbbfa5547f1c96ff1b04ed3ba9859c03f5a87e785f80abc5970839d3e62d1c0", kill_on_drop: false }`
[INFO] [stdout] 2fbbfa5547f1c96ff1b04ed3ba9859c03f5a87e785f80abc5970839d3e62d1c0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 7c8e8ba7bef4a35ab19d4bed1ad4edad56e140cb9bdcbe6182b0c665479d6ece
[INFO] running `Command { std: "docker" "start" "-a" "7c8e8ba7bef4a35ab19d4bed1ad4edad56e140cb9bdcbe6182b0c665479d6ece", kill_on_drop: false }`
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling rusb v0.8.1
[INFO] [stderr]    Compiling nb v1.0.0
[INFO] [stderr]    Compiling nb v0.1.3
[INFO] [stderr]    Compiling embedded-hal v0.2.7
[INFO] [stderr]    Compiling libusb1-sys v0.5.0
[INFO] [stderr]    Compiling mcp2221 v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.98s
[INFO] running `Command { std: "docker" "inspect" "7c8e8ba7bef4a35ab19d4bed1ad4edad56e140cb9bdcbe6182b0c665479d6ece", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c8e8ba7bef4a35ab19d4bed1ad4edad56e140cb9bdcbe6182b0c665479d6ece", kill_on_drop: false }`
[INFO] [stdout] 7c8e8ba7bef4a35ab19d4bed1ad4edad56e140cb9bdcbe6182b0c665479d6ece
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 3d9072f8ae40712c8b759d5dd393e24eaac88c7680feb2d57aa881d869c8653f
[INFO] running `Command { std: "docker" "start" "-a" "3d9072f8ae40712c8b759d5dd393e24eaac88c7680feb2d57aa881d869c8653f", kill_on_drop: false }`
[INFO] [stderr]    Compiling mcp2221 v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.54s
[INFO] running `Command { std: "docker" "inspect" "3d9072f8ae40712c8b759d5dd393e24eaac88c7680feb2d57aa881d869c8653f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3d9072f8ae40712c8b759d5dd393e24eaac88c7680feb2d57aa881d869c8653f", kill_on_drop: false }`
[INFO] [stdout] 3d9072f8ae40712c8b759d5dd393e24eaac88c7680feb2d57aa881d869c8653f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] b6807a310a3ec7d25fcc65db2a1f31683edc15181db1f735d7db93005205ffe5
[INFO] running `Command { std: "docker" "start" "-a" "b6807a310a3ec7d25fcc65db2a1f31683edc15181db1f735d7db93005205ffe5", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/mcp2221-c133ba4a002bd1c2)
[INFO] [stdout] running 0 tests
[INFO] [stderr]    Doc-tests mcp2221
[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] [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" "b6807a310a3ec7d25fcc65db2a1f31683edc15181db1f735d7db93005205ffe5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b6807a310a3ec7d25fcc65db2a1f31683edc15181db1f735d7db93005205ffe5", kill_on_drop: false }`
[INFO] [stdout] b6807a310a3ec7d25fcc65db2a1f31683edc15181db1f735d7db93005205ffe5