[INFO] cloning repository https://github.com/anewton1998/rust_chap_20
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/anewton1998/rust_chap_20" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanewton1998%2Frust_chap_20", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanewton1998%2Frust_chap_20'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1901c3c406cf32532c676cd3693e19602d3f4555
[INFO] checking anewton1998/rust_chap_20 against master#9503ea19edbf01b9435e80e17d60ce1b88390116 for pr-81782
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fanewton1998%2Frust_chap_20" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/anewton1998/rust_chap_20 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/anewton1998/rust_chap_20
[INFO] finished tweaking git repo https://github.com/anewton1998/rust_chap_20
[INFO] tweaked toml for git repo https://github.com/anewton1998/rust_chap_20 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/anewton1998/rust_chap_20 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 30e6c630ce9af1f50b1ab14f6350e7b1daf01e190a4ecf8344169d1b23c50d33
[INFO] running `Command { std: "docker" "start" "-a" "30e6c630ce9af1f50b1ab14f6350e7b1daf01e190a4ecf8344169d1b23c50d33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "30e6c630ce9af1f50b1ab14f6350e7b1daf01e190a4ecf8344169d1b23c50d33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30e6c630ce9af1f50b1ab14f6350e7b1daf01e190a4ecf8344169d1b23c50d33", kill_on_drop: false }`
[INFO] [stdout] 30e6c630ce9af1f50b1ab14f6350e7b1daf01e190a4ecf8344169d1b23c50d33
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stdout] 965c86a1a1ac46a635e493e353242edf3044bf932deb9a730df71fdb1f9b4da3
[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" "965c86a1a1ac46a635e493e353242edf3044bf932deb9a730df71fdb1f9b4da3", kill_on_drop: false }`
[INFO] [stderr]     Checking hello v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
[INFO] running `Command { std: "docker" "inspect" "965c86a1a1ac46a635e493e353242edf3044bf932deb9a730df71fdb1f9b4da3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "965c86a1a1ac46a635e493e353242edf3044bf932deb9a730df71fdb1f9b4da3", kill_on_drop: false }`
[INFO] [stdout] 965c86a1a1ac46a635e493e353242edf3044bf932deb9a730df71fdb1f9b4da3