[INFO] cloning repository https://github.com/julienp17/petit-chevaux
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/julienp17/petit-chevaux" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulienp17%2Fpetit-chevaux", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulienp17%2Fpetit-chevaux'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8df83b31e4aac8a9b4bbb7b605517ee4b4c73d9f
[INFO] checking julienp17/petit-chevaux against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjulienp17%2Fpetit-chevaux" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/julienp17/petit-chevaux 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/julienp17/petit-chevaux
[INFO] finished tweaking git repo https://github.com/julienp17/petit-chevaux
[INFO] tweaked toml for git repo https://github.com/julienp17/petit-chevaux written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/julienp17/petit-chevaux 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-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] 156afc21bfc154bc48b64fa43a2b240ff48326226db1983da95ecb033ccd0446
[INFO] running `Command { std: "docker" "start" "-a" "156afc21bfc154bc48b64fa43a2b240ff48326226db1983da95ecb033ccd0446", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "156afc21bfc154bc48b64fa43a2b240ff48326226db1983da95ecb033ccd0446", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "156afc21bfc154bc48b64fa43a2b240ff48326226db1983da95ecb033ccd0446", kill_on_drop: false }`
[INFO] [stdout] 156afc21bfc154bc48b64fa43a2b240ff48326226db1983da95ecb033ccd0446
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] dc4bdf1f6e3b17b2c98fe78c43ff6c3e031075acf044284490b8a57f818d8fc0
[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" "dc4bdf1f6e3b17b2c98fe78c43ff6c3e031075acf044284490b8a57f818d8fc0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking ppv-lite86 v0.2.9
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[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]     Checking petit_chevaux v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `roll_dice`
[INFO] [stdout]   --> src/game.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn roll_dice(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `roll_dice`
[INFO] [stdout]   --> src/game.rs:60:8
[INFO] [stdout]    |
[INFO] [stdout] 60 |     fn roll_dice(&self) -> usize {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.04s
[INFO] running `Command { std: "docker" "inspect" "dc4bdf1f6e3b17b2c98fe78c43ff6c3e031075acf044284490b8a57f818d8fc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc4bdf1f6e3b17b2c98fe78c43ff6c3e031075acf044284490b8a57f818d8fc0", kill_on_drop: false }`
[INFO] [stdout] dc4bdf1f6e3b17b2c98fe78c43ff6c3e031075acf044284490b8a57f818d8fc0