[INFO] fetching crate usbenum 0.1.0...
[INFO] checking usbenum-0.1.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate usbenum 0.1.0 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate usbenum 0.1.0 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 usbenum 0.1.0
[INFO] finished tweaking crates.io crate usbenum 0.1.0
[INFO] tweaked toml for crates.io crate usbenum 0.1.0 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate usbenum 0.1.0 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded udev v0.6.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 81802a0dab41b38d4be80c563d55a7351066169d0d7037623d48e17fe959f8c2
[INFO] running `Command { std: "docker" "start" "-a" "81802a0dab41b38d4be80c563d55a7351066169d0d7037623d48e17fe959f8c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "81802a0dab41b38d4be80c563d55a7351066169d0d7037623d48e17fe959f8c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "81802a0dab41b38d4be80c563d55a7351066169d0d7037623d48e17fe959f8c2", kill_on_drop: false }`
[INFO] [stdout] 81802a0dab41b38d4be80c563d55a7351066169d0d7037623d48e17fe959f8c2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] af08f9caaad2190d78b7c7bdff28e7a1361f0314659c6d2a34294560ef28cdce
[INFO] running `Command { std: "docker" "start" "-a" "af08f9caaad2190d78b7c7bdff28e7a1361f0314659c6d2a34294560ef28cdce", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling serde_derive v1.0.128
[INFO] [stderr]    Compiling serde v1.0.128
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking udev v0.6.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking usbenum v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [optimized + debuginfo] target(s) in 5.99s
[INFO] running `Command { std: "docker" "inspect" "af08f9caaad2190d78b7c7bdff28e7a1361f0314659c6d2a34294560ef28cdce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af08f9caaad2190d78b7c7bdff28e7a1361f0314659c6d2a34294560ef28cdce", kill_on_drop: false }`
[INFO] [stdout] af08f9caaad2190d78b7c7bdff28e7a1361f0314659c6d2a34294560ef28cdce
[INFO] checking usbenum-0.1.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate usbenum 0.1.0 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate usbenum 0.1.0 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 usbenum 0.1.0
[INFO] finished tweaking crates.io crate usbenum 0.1.0
[INFO] tweaked toml for crates.io crate usbenum 0.1.0 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate usbenum 0.1.0 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 408d08ca23479f07ce7080cc5b63cf9be2d4dd0a50883f2fe9457cb5cdaf86be
[INFO] running `Command { std: "docker" "start" "-a" "408d08ca23479f07ce7080cc5b63cf9be2d4dd0a50883f2fe9457cb5cdaf86be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "408d08ca23479f07ce7080cc5b63cf9be2d4dd0a50883f2fe9457cb5cdaf86be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "408d08ca23479f07ce7080cc5b63cf9be2d4dd0a50883f2fe9457cb5cdaf86be", kill_on_drop: false }`
[INFO] [stdout] 408d08ca23479f07ce7080cc5b63cf9be2d4dd0a50883f2fe9457cb5cdaf86be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 7354e6ef7d65cc9e1c75f582828e7d79a5397d523f511c2a76f391d0bb9cab35
[INFO] running `Command { std: "docker" "start" "-a" "7354e6ef7d65cc9e1c75f582828e7d79a5397d523f511c2a76f391d0bb9cab35", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.28
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.75
[INFO] [stderr]    Compiling libc v0.2.100
[INFO] [stderr]    Compiling pkg-config v0.3.19
[INFO] [stderr]    Compiling serde_derive v1.0.128
[INFO] [stderr]    Compiling serde v1.0.128
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking udev v0.6.2
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/udev-0.6.2/src/enumerator.rs:200:13
[INFO] [stdout]     |
[INFO] [stdout] 200 | /             match Device::from_syspath(syspath) {
[INFO] [stdout] 201 | |                 Ok(d) => return Some(d),
[INFO] [stdout] 202 | |                 Err(_) => continue,
[INFO] [stdout] 203 | |             };
[INFO] [stdout]     | |_____________^ cannot infer type
[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 E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `udev` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "7354e6ef7d65cc9e1c75f582828e7d79a5397d523f511c2a76f391d0bb9cab35", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7354e6ef7d65cc9e1c75f582828e7d79a5397d523f511c2a76f391d0bb9cab35", kill_on_drop: false }`
[INFO] [stdout] 7354e6ef7d65cc9e1c75f582828e7d79a5397d523f511c2a76f391d0bb9cab35