[INFO] cloning repository https://github.com/HazyAlex/maze_solver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/HazyAlex/maze_solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHazyAlex%2Fmaze_solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHazyAlex%2Fmaze_solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 700beebbd06bbc89331b23c468c07783b54a0cf4
[INFO] testing HazyAlex/maze_solver against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHazyAlex%2Fmaze_solver" "/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/HazyAlex/maze_solver on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/HazyAlex/maze_solver
[INFO] finished tweaking git repo https://github.com/HazyAlex/maze_solver
[INFO] tweaked toml for git repo https://github.com/HazyAlex/maze_solver written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/HazyAlex/maze_solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4d098ae4ee9af94df4078a0c6ef1fa4b92315d28004cb8fdbbcfa08e8b3fbc91
[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" "4d098ae4ee9af94df4078a0c6ef1fa4b92315d28004cb8fdbbcfa08e8b3fbc91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4d098ae4ee9af94df4078a0c6ef1fa4b92315d28004cb8fdbbcfa08e8b3fbc91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4d098ae4ee9af94df4078a0c6ef1fa4b92315d28004cb8fdbbcfa08e8b3fbc91", kill_on_drop: false }`
[INFO] [stdout] 4d098ae4ee9af94df4078a0c6ef1fa4b92315d28004cb8fdbbcfa08e8b3fbc91
[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=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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4469dd94e45a01d29c5ec1f6181efc559d5c85c2b65083e95b8de037f52126fa
[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" "4469dd94e45a01d29c5ec1f6181efc559d5c85c2b65083e95b8de037f52126fa", kill_on_drop: false }`
[INFO] [stderr]    Compiling adler32 v1.0.3
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling gif v0.10.2
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling tiff v0.3.1
[INFO] [stderr]    Compiling inflate v0.4.5
[INFO] [stderr]    Compiling deflate v0.7.20
[INFO] [stderr]    Compiling rayon-core v1.5.0
[INFO] [stderr]    Compiling rayon v1.1.0
[INFO] [stderr]    Compiling png v0.15.0
[INFO] [stderr]    Compiling jpeg-decoder v0.1.15
[INFO] [stderr]    Compiling image v0.22.1
[INFO] [stderr]    Compiling maze_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 27.79s
[INFO] running `Command { std: "docker" "inspect" "4469dd94e45a01d29c5ec1f6181efc559d5c85c2b65083e95b8de037f52126fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4469dd94e45a01d29c5ec1f6181efc559d5c85c2b65083e95b8de037f52126fa", kill_on_drop: false }`
[INFO] [stdout] 4469dd94e45a01d29c5ec1f6181efc559d5c85c2b65083e95b8de037f52126fa
[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=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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen" "--no-run" "--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] 288340c2c3c20761b427f64bdd42ef48bcd21aa3708e8ae6e44e8b02f5328c88
[INFO] running `Command { std: "docker" "start" "-a" "288340c2c3c20761b427f64bdd42ef48bcd21aa3708e8ae6e44e8b02f5328c88", kill_on_drop: false }`
[INFO] [stderr]    Compiling maze_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.41s
[INFO] running `Command { std: "docker" "inspect" "288340c2c3c20761b427f64bdd42ef48bcd21aa3708e8ae6e44e8b02f5328c88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "288340c2c3c20761b427f64bdd42ef48bcd21aa3708e8ae6e44e8b02f5328c88", kill_on_drop: false }`
[INFO] [stdout] 288340c2c3c20761b427f64bdd42ef48bcd21aa3708e8ae6e44e8b02f5328c88
[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=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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "test" "--frozen", 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] 079d3328263e3763e95e468983ad933171e67a5a5565b75e2b201c06208bee18
[INFO] running `Command { std: "docker" "start" "-a" "079d3328263e3763e95e468983ad933171e67a5a5565b75e2b201c06208bee18", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/maze_solver-93003ae339c906c5
[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
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/maze_solver-c335d33e5e51aea2
[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
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests maze_solver
[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
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "079d3328263e3763e95e468983ad933171e67a5a5565b75e2b201c06208bee18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "079d3328263e3763e95e468983ad933171e67a5a5565b75e2b201c06208bee18", kill_on_drop: false }`
[INFO] [stdout] 079d3328263e3763e95e468983ad933171e67a5a5565b75e2b201c06208bee18