[INFO] cloning repository https://github.com/jrfoxtx/crossword
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jrfoxtx/crossword" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrfoxtx%2Fcrossword", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrfoxtx%2Fcrossword'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0f579fdfcf49020cceedfbbfd985a32fe6d46cfa
[INFO] checking jrfoxtx/crossword against master#4fa76a4a7742bb9c1febe33019f5a9e7e4839a65 for pr-83744
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjrfoxtx%2Fcrossword" "/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/jrfoxtx/crossword on toolchain 4fa76a4a7742bb9c1febe33019f5a9e7e4839a65
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jrfoxtx/crossword
[INFO] finished tweaking git repo https://github.com/jrfoxtx/crossword
[INFO] tweaked toml for git repo https://github.com/jrfoxtx/crossword written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/jrfoxtx/crossword already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 182f33a9bf0bd17142155cb9d4a33c12f6233b7146820e0097b4ce8a2961d871
[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" "182f33a9bf0bd17142155cb9d4a33c12f6233b7146820e0097b4ce8a2961d871", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "182f33a9bf0bd17142155cb9d4a33c12f6233b7146820e0097b4ce8a2961d871", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "182f33a9bf0bd17142155cb9d4a33c12f6233b7146820e0097b4ce8a2961d871", kill_on_drop: false }`
[INFO] [stdout] 182f33a9bf0bd17142155cb9d4a33c12f6233b7146820e0097b4ce8a2961d871
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+4fa76a4a7742bb9c1febe33019f5a9e7e4839a65" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2030f2ff8d24fa82591b434356ce12285a36576d0cfb30f71c1af463eafc6c4f
[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" "2030f2ff8d24fa82591b434356ce12285a36576d0cfb30f71c1af463eafc6c4f", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]     Checking functions v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.48s
[INFO] running `Command { std: "docker" "inspect" "2030f2ff8d24fa82591b434356ce12285a36576d0cfb30f71c1af463eafc6c4f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2030f2ff8d24fa82591b434356ce12285a36576d0cfb30f71c1af463eafc6c4f", kill_on_drop: false }`
[INFO] [stdout] 2030f2ff8d24fa82591b434356ce12285a36576d0cfb30f71c1af463eafc6c4f