[INFO] cloning repository https://github.com/pfeuvraux/rust-zombies
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pfeuvraux/rust-zombies" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpfeuvraux%2Frust-zombies", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpfeuvraux%2Frust-zombies'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 24a96e43b686b21a69ac732a04ac1d17f01f4ab7
[INFO] checking pfeuvraux/rust-zombies against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpfeuvraux%2Frust-zombies" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/pfeuvraux/rust-zombies 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/pfeuvraux/rust-zombies
[INFO] finished tweaking git repo https://github.com/pfeuvraux/rust-zombies
[INFO] tweaked toml for git repo https://github.com/pfeuvraux/rust-zombies written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/pfeuvraux/rust-zombies 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 argparse v0.2.2
[INFO] [stderr]   Downloaded sysinfo v0.20.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] bb710d5c4e912b9b7981ecd37dbbdcae6bd7ddc0685f25c8b36bef7b7b478504
[INFO] running `Command { std: "docker" "start" "-a" "bb710d5c4e912b9b7981ecd37dbbdcae6bd7ddc0685f25c8b36bef7b7b478504", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb710d5c4e912b9b7981ecd37dbbdcae6bd7ddc0685f25c8b36bef7b7b478504", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb710d5c4e912b9b7981ecd37dbbdcae6bd7ddc0685f25c8b36bef7b7b478504", kill_on_drop: false }`
[INFO] [stdout] bb710d5c4e912b9b7981ecd37dbbdcae6bd7ddc0685f25c8b36bef7b7b478504
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] a8cdd28ecde83eecf749cb1858e90626463abd71c1e87b0bd1900e193a8cfd79
[INFO] running `Command { std: "docker" "start" "-a" "a8cdd28ecde83eecf749cb1858e90626463abd71c1e87b0bd1900e193a8cfd79", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.105
[INFO] [stderr]    Compiling sysinfo v0.20.5
[INFO] [stderr]     Checking argparse v0.2.2
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rayon-core v1.9.1
[INFO] [stderr]     Checking rayon v1.5.1
[INFO] [stderr]     Checking rust-zombies v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: the item `argparse` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use argparse;
[INFO] [stdout]   |     ^^^^^^^^ the item `argparse` 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/proc.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use sysinfo::{self, ProcessExt, SystemExt};
[INFO] [stdout]   |               ^^^^ the item `sysinfo` is already defined by prelude
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the item `argparse` is imported redundantly
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use argparse;
[INFO] [stdout]   |     ^^^^^^^^ the item `argparse` 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/proc.rs:3:15
[INFO] [stdout]   |
[INFO] [stdout] 3 | use sysinfo::{self, ProcessExt, 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 2.45s
[INFO] running `Command { std: "docker" "inspect" "a8cdd28ecde83eecf749cb1858e90626463abd71c1e87b0bd1900e193a8cfd79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a8cdd28ecde83eecf749cb1858e90626463abd71c1e87b0bd1900e193a8cfd79", kill_on_drop: false }`
[INFO] [stdout] a8cdd28ecde83eecf749cb1858e90626463abd71c1e87b0bd1900e193a8cfd79