[INFO] cloning repository https://github.com/h-gr/square-array
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/h-gr/square-array" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh-gr%2Fsquare-array", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh-gr%2Fsquare-array'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 422dc15e0d1edc60c39f7151c4fdff9a308cab76
[INFO] checking h-gr/square-array against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fh-gr%2Fsquare-array" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/h-gr/square-array on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/h-gr/square-array
[INFO] finished tweaking git repo https://github.com/h-gr/square-array
[INFO] tweaked toml for git repo https://github.com/h-gr/square-array written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/h-gr/square-array already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 74ac90cc19f504d7b557c71ce60ffe9b3ea6f2c0b53b7abfe1f4007a1b07f3da
[INFO] running `Command { std: "docker" "start" "-a" "74ac90cc19f504d7b557c71ce60ffe9b3ea6f2c0b53b7abfe1f4007a1b07f3da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "74ac90cc19f504d7b557c71ce60ffe9b3ea6f2c0b53b7abfe1f4007a1b07f3da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74ac90cc19f504d7b557c71ce60ffe9b3ea6f2c0b53b7abfe1f4007a1b07f3da", kill_on_drop: false }`
[INFO] [stdout] 74ac90cc19f504d7b557c71ce60ffe9b3ea6f2c0b53b7abfe1f4007a1b07f3da
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bd1c9199232b8d984f64da022eebba78cbe8d3a4626e0a5cc3b5770337efc4b7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bd1c9199232b8d984f64da022eebba78cbe8d3a4626e0a5cc3b5770337efc4b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.80
[INFO] [stderr]    Compiling syn v1.0.53
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking pin-project-lite v0.2.0
[INFO] [stderr]    Compiling rayon-core v1.8.0 (https://github.com/wagnerf42/rayon?branch=tracing#41da67cf)
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling rayon v1.4.0 (https://github.com/wagnerf42/rayon?branch=tracing#41da67cf)
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]     Checking itertools v0.9.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling tracing-attributes v0.1.11
[INFO] [stderr]     Checking tracing v0.1.22
[INFO] [stderr]     Checking fast-tracer v0.1.0 (https://github.com/wagnerf42/fast-tracer#00d453ef)
[INFO] [stderr]     Checking array_square v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 30.73s
[INFO] running `Command { std: "docker" "inspect" "bd1c9199232b8d984f64da022eebba78cbe8d3a4626e0a5cc3b5770337efc4b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd1c9199232b8d984f64da022eebba78cbe8d3a4626e0a5cc3b5770337efc4b7", kill_on_drop: false }`
[INFO] [stdout] bd1c9199232b8d984f64da022eebba78cbe8d3a4626e0a5cc3b5770337efc4b7