[INFO] fetching crate serialmessage 0.1.1...
[INFO] checking serialmessage-0.1.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate serialmessage 0.1.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate serialmessage 0.1.1 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 serialmessage 0.1.1
[INFO] finished tweaking crates.io crate serialmessage 0.1.1
[INFO] tweaked toml for crates.io crate serialmessage 0.1.1 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate serialmessage 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serialport v4.2.0
[INFO] [stderr]   Downloaded zerocopy-derive v0.3.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 3ad049159d8f1c167d414faf0d2f72b0803843e3e87392466cd008fb37454d86
[INFO] running `Command { std: "docker" "start" "-a" "3ad049159d8f1c167d414faf0d2f72b0803843e3e87392466cd008fb37454d86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ad049159d8f1c167d414faf0d2f72b0803843e3e87392466cd008fb37454d86", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ad049159d8f1c167d414faf0d2f72b0803843e3e87392466cd008fb37454d86", kill_on_drop: false }`
[INFO] [stdout] 3ad049159d8f1c167d414faf0d2f72b0803843e3e87392466cd008fb37454d86
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] fbccf8fb7f7df39a7b60f65b76c49938054937c56b43b8717c8eaa9c692fff51
[INFO] running `Command { std: "docker" "start" "-a" "fbccf8fb7f7df39a7b60f65b76c49938054937c56b43b8717c8eaa9c692fff51", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking serialmessage v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking nix v0.24.2
[INFO] [stderr]     Checking libudev v0.3.0
[INFO] [stderr]     Checking serialport v4.2.0
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]    Compiling zerocopy-derive v0.3.1
[INFO] [stderr]     Checking zerocopy v0.6.1
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.86s
[INFO] running `Command { std: "docker" "inspect" "fbccf8fb7f7df39a7b60f65b76c49938054937c56b43b8717c8eaa9c692fff51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbccf8fb7f7df39a7b60f65b76c49938054937c56b43b8717c8eaa9c692fff51", kill_on_drop: false }`
[INFO] [stdout] fbccf8fb7f7df39a7b60f65b76c49938054937c56b43b8717c8eaa9c692fff51
[INFO] checking serialmessage-0.1.1 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate serialmessage 0.1.1 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate serialmessage 0.1.1 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serialmessage 0.1.1
[INFO] finished tweaking crates.io crate serialmessage 0.1.1
[INFO] tweaked toml for crates.io crate serialmessage 0.1.1 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate serialmessage 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 222ed63d1c0d91f2b76eaf670e2311d64681a1ba649cd01ff44ae11ff3809452
[INFO] running `Command { std: "docker" "start" "-a" "222ed63d1c0d91f2b76eaf670e2311d64681a1ba649cd01ff44ae11ff3809452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "222ed63d1c0d91f2b76eaf670e2311d64681a1ba649cd01ff44ae11ff3809452", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "222ed63d1c0d91f2b76eaf670e2311d64681a1ba649cd01ff44ae11ff3809452", kill_on_drop: false }`
[INFO] [stdout] 222ed63d1c0d91f2b76eaf670e2311d64681a1ba649cd01ff44ae11ff3809452
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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=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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27bedde9d638f5f982de6424904c34a3c96a0c495f5d8c4e1d98cda6167fac7c
[INFO] running `Command { std: "docker" "start" "-a" "27bedde9d638f5f982de6424904c34a3c96a0c495f5d8c4e1d98cda6167fac7c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling libc v0.2.132
[INFO] [stderr]    Compiling unicode-ident v1.0.1
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]    Compiling syn v1.0.96
[INFO] [stderr]    Compiling unicode-xid v0.2.3
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]     Checking serialmessage v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking nix v0.24.2
[INFO] [stderr]     Checking libudev v0.3.0
[INFO] [stdout] error[E0284]: type annotations needed: cannot satisfy `_ -> _`
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/libudev-0.3.0/src/enumerator.rs:171:17
[INFO] [stdout]     |
[INFO] [stdout] 171 | /                 if !device.is_null() {
[INFO] [stdout] 172 | |                     return Some(::device::from_raw(device));
[INFO] [stdout] 173 | |                 }
[INFO] [stdout] 174 | |                 else {
[INFO] [stdout] 175 | |                     continue;
[INFO] [stdout] 176 | |                 }
[INFO] [stdout]     | |_________________^ cannot satisfy `_ -> _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0284`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libudev` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "27bedde9d638f5f982de6424904c34a3c96a0c495f5d8c4e1d98cda6167fac7c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27bedde9d638f5f982de6424904c34a3c96a0c495f5d8c4e1d98cda6167fac7c", kill_on_drop: false }`
[INFO] [stdout] 27bedde9d638f5f982de6424904c34a3c96a0c495f5d8c4e1d98cda6167fac7c