[INFO] cloning repository https://github.com/red2fred2/649-n-queens
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/red2fred2/649-n-queens" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fred2fred2%2F649-n-queens", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fred2fred2%2F649-n-queens'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 13ba43e2c98ba87c07495099cff95561915f286d
[INFO] testing red2fred2/649-n-queens against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fred2fred2%2F649-n-queens" "/workspace/builds/worker-107/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-107/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/red2fred2/649-n-queens on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/red2fred2/649-n-queens
[INFO] finished tweaking git repo https://github.com/red2fred2/649-n-queens
[INFO] tweaked toml for git repo https://github.com/red2fred2/649-n-queens written to /workspace/builds/worker-107/source/Cargo.toml
[INFO] crate git repo https://github.com/red2fred2/649-n-queens already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--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-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 69bb06b8da270b63f715a2e64bc73de1eb6062b7373cf49b898239ed0cc8b154
[INFO] running `Command { std: "docker" "start" "-a" "69bb06b8da270b63f715a2e64bc73de1eb6062b7373cf49b898239ed0cc8b154", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69bb06b8da270b63f715a2e64bc73de1eb6062b7373cf49b898239ed0cc8b154", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69bb06b8da270b63f715a2e64bc73de1eb6062b7373cf49b898239ed0cc8b154", kill_on_drop: false }`
[INFO] [stdout] 69bb06b8da270b63f715a2e64bc73de1eb6062b7373cf49b898239ed0cc8b154
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] db62f803fc90605c2fda0377eb60dc0b92a2ee25d41b55b0d94e6766b07ef6fa
[INFO] running `Command { std: "docker" "start" "-a" "db62f803fc90605c2fda0377eb60dc0b92a2ee25d41b55b0d94e6766b07ef6fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.118
[INFO] [stderr]    Compiling getrandom v0.2.4
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.5
[INFO] [stderr]    Compiling n-queens v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 38.09s
[INFO] running `Command { std: "docker" "inspect" "db62f803fc90605c2fda0377eb60dc0b92a2ee25d41b55b0d94e6766b07ef6fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db62f803fc90605c2fda0377eb60dc0b92a2ee25d41b55b0d94e6766b07ef6fa", kill_on_drop: false }`
[INFO] [stdout] db62f803fc90605c2fda0377eb60dc0b92a2ee25d41b55b0d94e6766b07ef6fa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 22d865a9b28136162ffec1159552337ee7d335992418c68114b42f18aa5f92f3
[INFO] running `Command { std: "docker" "start" "-a" "22d865a9b28136162ffec1159552337ee7d335992418c68114b42f18aa5f92f3", kill_on_drop: false }`
[INFO] [stderr]    Compiling n-queens v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.15s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/n_queens-6e938af5b2cba6bc)
[INFO] running `Command { std: "docker" "inspect" "22d865a9b28136162ffec1159552337ee7d335992418c68114b42f18aa5f92f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "22d865a9b28136162ffec1159552337ee7d335992418c68114b42f18aa5f92f3", kill_on_drop: false }`
[INFO] [stdout] 22d865a9b28136162ffec1159552337ee7d335992418c68114b42f18aa5f92f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-107/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=warn" "-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:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 5f1ceed238e8fc196cf6405732979e2842bfba78e686fd5432266f0d1a370b05
[INFO] running `Command { std: "docker" "start" "-a" "5f1ceed238e8fc196cf6405732979e2842bfba78e686fd5432266f0d1a370b05", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/n_queens-6e938af5b2cba6bc)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "5f1ceed238e8fc196cf6405732979e2842bfba78e686fd5432266f0d1a370b05", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5f1ceed238e8fc196cf6405732979e2842bfba78e686fd5432266f0d1a370b05", kill_on_drop: false }`
[INFO] [stdout] 5f1ceed238e8fc196cf6405732979e2842bfba78e686fd5432266f0d1a370b05