[INFO] fetching crate firmata-rs 0.4.1...
[INFO] checking firmata-rs-0.4.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate firmata-rs 0.4.1 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate firmata-rs 0.4.1 on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate firmata-rs 0.4.1
[INFO] finished tweaking crates.io crate firmata-rs 0.4.1
[INFO] tweaked toml for crates.io crate firmata-rs 0.4.1 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate firmata-rs 0.4.1 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded snafu v0.7.4
[INFO] [stderr]   Downloaded libudev v0.3.0
[INFO] [stderr]   Downloaded snafu-derive v0.7.4
[INFO] [stderr]   Downloaded serialport v4.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6840973440ae0ce8da70fe1f99bfc80eacfb107e3eb636727f9ae7256aaf05bd
[INFO] running `Command { std: "docker" "start" "-a" "6840973440ae0ce8da70fe1f99bfc80eacfb107e3eb636727f9ae7256aaf05bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6840973440ae0ce8da70fe1f99bfc80eacfb107e3eb636727f9ae7256aaf05bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6840973440ae0ce8da70fe1f99bfc80eacfb107e3eb636727f9ae7256aaf05bd", kill_on_drop: false }`
[INFO] [stdout] 6840973440ae0ce8da70fe1f99bfc80eacfb107e3eb636727f9ae7256aaf05bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2bd8b88899ed3add2859931834cffebb3ef82f7dbb5048b38736e5663c96f10d
[INFO] running `Command { std: "docker" "start" "-a" "2bd8b88899ed3add2859931834cffebb3ef82f7dbb5048b38736e5663c96f10d", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.146
[INFO] [stderr]    Compiling proc-macro2 v1.0.60
[INFO] [stderr]    Compiling quote v1.0.28
[INFO] [stderr]    Compiling unicode-ident v1.0.9
[INFO] [stderr]     Checking once_cell v1.18.0
[INFO] [stderr]    Compiling pkg-config v0.3.27
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking tracing-core v0.1.31
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking log v0.4.19
[INFO] [stderr]     Checking overload v0.1.1
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking nu-ansi-term v0.46.0
[INFO] [stderr]     Checking bitflags v2.0.2
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling syn v2.0.18
[INFO] [stderr]     Checking tracing-subscriber v0.3.17
[INFO] [stderr]     Checking getrandom v0.2.10
[INFO] [stderr]     Checking nix v0.26.2
[INFO] [stderr]     Checking libudev v0.3.0
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking serialport v4.2.1
[INFO] [stderr]     Checking backoff v0.4.0
[INFO] [stderr]    Compiling snafu-derive v0.7.4
[INFO] [stderr]    Compiling tracing-attributes v0.1.26
[INFO] [stderr]     Checking snafu v0.7.4
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking firmata-rs v0.4.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.56s
[INFO] running `Command { std: "docker" "inspect" "2bd8b88899ed3add2859931834cffebb3ef82f7dbb5048b38736e5663c96f10d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2bd8b88899ed3add2859931834cffebb3ef82f7dbb5048b38736e5663c96f10d", kill_on_drop: false }`
[INFO] [stdout] 2bd8b88899ed3add2859931834cffebb3ef82f7dbb5048b38736e5663c96f10d