[INFO] cloning repository https://github.com/alexesmet/monitor-box-daemon
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/alexesmet/monitor-box-daemon" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexesmet%2Fmonitor-box-daemon", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexesmet%2Fmonitor-box-daemon'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f37306d38d523312f758e887d15941daa3acde35
[INFO] checking alexesmet/monitor-box-daemon against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexesmet%2Fmonitor-box-daemon" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alexesmet/monitor-box-daemon 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 git repo https://github.com/alexesmet/monitor-box-daemon
[INFO] finished tweaking git repo https://github.com/alexesmet/monitor-box-daemon
[INFO] tweaked toml for git repo https://github.com/alexesmet/monitor-box-daemon written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/alexesmet/monitor-box-daemon 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]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded libudev v0.2.0
[INFO] [stderr]   Downloaded serialport v3.3.0
[INFO] [stderr]   Downloaded IOKit-sys v0.1.5
[INFO] [stderr]   Downloaded sysinfo v0.15.1
[INFO] [stderr]   Downloaded CoreFoundation-sys v0.1.4
[INFO] [stderr]   Downloaded mach v0.1.2
[INFO] [stderr]   Downloaded cc v1.0.59
[INFO] [stderr]   Downloaded mach v0.2.3
[INFO] [stderr]   Downloaded either v1.6.0
[INFO] [stderr]   Downloaded libc v0.2.76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] db04d08d1ef0a033b5552d2b67e2652176f4e977850b1eb6cbcab9a4c3bfb696
[INFO] running `Command { std: "docker" "start" "-a" "db04d08d1ef0a033b5552d2b67e2652176f4e977850b1eb6cbcab9a4c3bfb696", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db04d08d1ef0a033b5552d2b67e2652176f4e977850b1eb6cbcab9a4c3bfb696", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db04d08d1ef0a033b5552d2b67e2652176f4e977850b1eb6cbcab9a4c3bfb696", kill_on_drop: false }`
[INFO] [stdout] db04d08d1ef0a033b5552d2b67e2652176f4e977850b1eb6cbcab9a4c3bfb696
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 19e8d23bfa1eb025f5c0ee755e804b5520d4f586813e72401325eb36abc791dd
[INFO] running `Command { std: "docker" "start" "-a" "19e8d23bfa1eb025f5c0ee755e804b5520d4f586813e72401325eb36abc791dd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling sysinfo v0.15.1
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking either v1.6.0
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking rayon-core v1.7.1
[INFO] [stderr]     Checking rayon v1.3.1
[INFO] [stderr]     Checking serialport v3.3.0
[INFO] [stderr]     Checking monitor-box-daemon v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `serialport` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use serialport;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `serialport` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `sysinfo` is imported redundantly
[INFO] [stdout]  --> src/main.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use sysinfo::{self, ProcessorExt, SystemExt};
[INFO] [stdout]   |               ^^^^ the item `sysinfo` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `serialport` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use serialport;
[INFO] [stdout]   |     ^^^^^^^^^^ the item `serialport` is already defined by prelude
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `sysinfo` is imported redundantly
[INFO] [stdout]  --> src/main.rs:5:15
[INFO] [stdout]   |
[INFO] [stdout] 5 | use sysinfo::{self, ProcessorExt, SystemExt};
[INFO] [stdout]   |               ^^^^ the item `sysinfo` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.09s
[INFO] running `Command { std: "docker" "inspect" "19e8d23bfa1eb025f5c0ee755e804b5520d4f586813e72401325eb36abc791dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19e8d23bfa1eb025f5c0ee755e804b5520d4f586813e72401325eb36abc791dd", kill_on_drop: false }`
[INFO] [stdout] 19e8d23bfa1eb025f5c0ee755e804b5520d4f586813e72401325eb36abc791dd