[INFO] fetching crate art_exercise_2019 0.1.0...
[INFO] checking art_exercise_2019-0.1.0 against master#5e3f1b148db5bfa27fee52464ae1f5d34c49d77b for pr-75502
[INFO] extracting crate art_exercise_2019 0.1.0 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate art_exercise_2019 0.1.0 on toolchain 5e3f1b148db5bfa27fee52464ae1f5d34c49d77b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate art_exercise_2019 0.1.0
[INFO] finished tweaking crates.io crate art_exercise_2019 0.1.0
[INFO] tweaked toml for crates.io crate art_exercise_2019 0.1.0 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 71ba6812f0c3ebe3b711a7a51fb15bdda9884d09cc184c05093436018e3fe6cb
[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" "71ba6812f0c3ebe3b711a7a51fb15bdda9884d09cc184c05093436018e3fe6cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "71ba6812f0c3ebe3b711a7a51fb15bdda9884d09cc184c05093436018e3fe6cb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "71ba6812f0c3ebe3b711a7a51fb15bdda9884d09cc184c05093436018e3fe6cb", kill_on_drop: false }`
[INFO] [stdout] 71ba6812f0c3ebe3b711a7a51fb15bdda9884d09cc184c05093436018e3fe6cb
[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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+5e3f1b148db5bfa27fee52464ae1f5d34c49d77b" "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] 55f93cfa4d32ab682612177e77515759808e6e7d03e4c897f85d6769f6cbafea
[INFO] running `Command { std: "docker" "start" "-a" "55f93cfa4d32ab682612177e77515759808e6e7d03e4c897f85d6769f6cbafea", kill_on_drop: false }`
[INFO] [stderr]     Checking art_exercise_2019 v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `Command { std: "docker" "inspect" "55f93cfa4d32ab682612177e77515759808e6e7d03e4c897f85d6769f6cbafea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "55f93cfa4d32ab682612177e77515759808e6e7d03e4c897f85d6769f6cbafea", kill_on_drop: false }`
[INFO] [stdout] 55f93cfa4d32ab682612177e77515759808e6e7d03e4c897f85d6769f6cbafea