[INFO] cloning repository https://github.com/MathisBurger/eight-queen-problem
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MathisBurger/eight-queen-problem" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMathisBurger%2Feight-queen-problem", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMathisBurger%2Feight-queen-problem'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] bc35a4158ec87dea785c53b60ef3f04df262fb8f
[INFO] checking MathisBurger/eight-queen-problem against master#9503ea19edbf01b9435e80e17d60ce1b88390116 for pr-81782
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMathisBurger%2Feight-queen-problem" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/MathisBurger/eight-queen-problem on toolchain 9503ea19edbf01b9435e80e17d60ce1b88390116
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MathisBurger/eight-queen-problem
[INFO] finished tweaking git repo https://github.com/MathisBurger/eight-queen-problem
[INFO] tweaked toml for git repo https://github.com/MathisBurger/eight-queen-problem written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/MathisBurger/eight-queen-problem already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2102cf9fe798d0fc37d9fb73f4bf5a0c492a75f4a07738364511a1bc81e2321e
[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" "2102cf9fe798d0fc37d9fb73f4bf5a0c492a75f4a07738364511a1bc81e2321e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2102cf9fe798d0fc37d9fb73f4bf5a0c492a75f4a07738364511a1bc81e2321e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2102cf9fe798d0fc37d9fb73f4bf5a0c492a75f4a07738364511a1bc81e2321e", kill_on_drop: false }`
[INFO] [stdout] 2102cf9fe798d0fc37d9fb73f4bf5a0c492a75f4a07738364511a1bc81e2321e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9503ea19edbf01b9435e80e17d60ce1b88390116" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] 157dc9f36d3e152f1bc756a91a9a5d13888aa69d8ff6951629cee5f97abc13f1
[INFO] running `Command { std: "docker" "start" "-a" "157dc9f36d3e152f1bc756a91a9a5d13888aa69d8ff6951629cee5f97abc13f1", kill_on_drop: false }`
[INFO] [stderr]     Checking reduce v0.1.4
[INFO] [stderr]     Checking Acht-Damen-Problem v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: crate `Acht_Damen_Problem` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `acht_damen_problem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: crate `Acht_Damen_Problem` should have a snake case name
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_snake_case)]` on by default
[INFO] [stdout]   = help: convert the identifier to snake case: `acht_damen_problem`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.39s
[INFO] running `Command { std: "docker" "inspect" "157dc9f36d3e152f1bc756a91a9a5d13888aa69d8ff6951629cee5f97abc13f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "157dc9f36d3e152f1bc756a91a9a5d13888aa69d8ff6951629cee5f97abc13f1", kill_on_drop: false }`
[INFO] [stdout] 157dc9f36d3e152f1bc756a91a9a5d13888aa69d8ff6951629cee5f97abc13f1