[INFO] cloning repository https://github.com/yenser/challenge-383-easy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/yenser/challenge-383-easy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyenser%2Fchallenge-383-easy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyenser%2Fchallenge-383-easy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fe891795741f1c3b3e33874886acb0e577fe2dec
[INFO] checking yenser/challenge-383-easy against master#36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923 for pr-81863
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fyenser%2Fchallenge-383-easy" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/yenser/challenge-383-easy on toolchain 36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/yenser/challenge-383-easy
[INFO] finished tweaking git repo https://github.com/yenser/challenge-383-easy
[INFO] tweaked toml for git repo https://github.com/yenser/challenge-383-easy written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/yenser/challenge-383-easy already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "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] 3592df6b919e199ad257e944185c7856b5c2120e6cca39f5696a26065c93f31f
[INFO] running `Command { std: "docker" "start" "-a" "3592df6b919e199ad257e944185c7856b5c2120e6cca39f5696a26065c93f31f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3592df6b919e199ad257e944185c7856b5c2120e6cca39f5696a26065c93f31f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3592df6b919e199ad257e944185c7856b5c2120e6cca39f5696a26065c93f31f", kill_on_drop: false }`
[INFO] [stdout] 3592df6b919e199ad257e944185c7856b5c2120e6cca39f5696a26065c93f31f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:ce6408862c0f4858e6cd2b85b2cf085ff7d0d6323904d0a94b71664a228554ab" "/opt/rustwide/cargo-home/bin/cargo" "+36ecbc94eb6be90bc38b2d0fdd4bfac3f34d9923" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 291bd24102c574a348b0adfba6886c36f862c158b14b7f2702da20c0667948de
[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" "291bd24102c574a348b0adfba6886c36f862c158b14b7f2702da20c0667948de", kill_on_drop: false }`
[INFO] [stderr]     Checking challenge-383-easy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.51s
[INFO] running `Command { std: "docker" "inspect" "291bd24102c574a348b0adfba6886c36f862c158b14b7f2702da20c0667948de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "291bd24102c574a348b0adfba6886c36f862c158b14b7f2702da20c0667948de", kill_on_drop: false }`
[INFO] [stdout] 291bd24102c574a348b0adfba6886c36f862c158b14b7f2702da20c0667948de