[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#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexesmet%2Fmonitor-box-daemon" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alexesmet/monitor-box-daemon on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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-4-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sysinfo v0.15.1
[INFO] [stderr]   Downloaded ntapi v0.3.4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b811100cf34f972722bd27264794b58b0ae67b838e69c93bab26e60029e5fb25
[INFO] running `Command { std: "docker" "start" "-a" "b811100cf34f972722bd27264794b58b0ae67b838e69c93bab26e60029e5fb25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b811100cf34f972722bd27264794b58b0ae67b838e69c93bab26e60029e5fb25", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b811100cf34f972722bd27264794b58b0ae67b838e69c93bab26e60029e5fb25", kill_on_drop: false }`
[INFO] [stdout] b811100cf34f972722bd27264794b58b0ae67b838e69c93bab26e60029e5fb25
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5fb2aba3d50645f92d249de1f093feac806c6bfa362091f73f987146a33e694
[INFO] running `Command { std: "docker" "start" "-a" "e5fb2aba3d50645f92d249de1f093feac806c6bfa362091f73f987146a33e694", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling sysinfo v0.15.1
[INFO] [stderr]     Checking either v1.6.0
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[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 9.93s
[INFO] running `Command { std: "docker" "inspect" "e5fb2aba3d50645f92d249de1f093feac806c6bfa362091f73f987146a33e694", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5fb2aba3d50645f92d249de1f093feac806c6bfa362091f73f987146a33e694", kill_on_drop: false }`
[INFO] [stdout] e5fb2aba3d50645f92d249de1f093feac806c6bfa362091f73f987146a33e694
[INFO] checking alexesmet/monitor-box-daemon against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexesmet%2Fmonitor-box-daemon" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/alexesmet/monitor-box-daemon on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "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-4-tc2/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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2b4927bbcfeda0a85d16b2f096cbdc662ab47d54820cf00d3e7879cab1854499
[INFO] running `Command { std: "docker" "start" "-a" "2b4927bbcfeda0a85d16b2f096cbdc662ab47d54820cf00d3e7879cab1854499", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2b4927bbcfeda0a85d16b2f096cbdc662ab47d54820cf00d3e7879cab1854499", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2b4927bbcfeda0a85d16b2f096cbdc662ab47d54820cf00d3e7879cab1854499", kill_on_drop: false }`
[INFO] [stdout] 2b4927bbcfeda0a85d16b2f096cbdc662ab47d54820cf00d3e7879cab1854499
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72b121bae1b42ced113b1739bd9e8992262afe0d99b6c519fa893621550aa4d6
[INFO] running `Command { std: "docker" "start" "-a" "72b121bae1b42ced113b1739bd9e8992262afe0d99b6c519fa893621550aa4d6", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling libc v0.2.76
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling rayon-core v1.7.1
[INFO] [stderr]    Compiling pkg-config v0.3.18
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling sysinfo v0.15.1
[INFO] [stderr]     Checking either v1.6.0
[INFO] [stderr]     Checking once_cell v1.4.1
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling rayon v1.3.1
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking libudev v0.2.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[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 9.02s
[INFO] running `Command { std: "docker" "inspect" "72b121bae1b42ced113b1739bd9e8992262afe0d99b6c519fa893621550aa4d6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72b121bae1b42ced113b1739bd9e8992262afe0d99b6c519fa893621550aa4d6", kill_on_drop: false }`
[INFO] [stdout] 72b121bae1b42ced113b1739bd9e8992262afe0d99b6c519fa893621550aa4d6