[INFO] cloning repository https://github.com/trevorwhitney/twentyfour-days-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/trevorwhitney/twentyfour-days-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftrevorwhitney%2Ftwentyfour-days-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftrevorwhitney%2Ftwentyfour-days-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 44b22a9e3b13c171e74248270e2890190c4e50ee
[INFO] checking trevorwhitney/twentyfour-days-rust against master#2ad5292aea6328113b55968b4322528d48261316 for pr-80243
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftrevorwhitney%2Ftwentyfour-days-rust" "/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/trevorwhitney/twentyfour-days-rust on toolchain 2ad5292aea6328113b55968b4322528d48261316
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/trevorwhitney/twentyfour-days-rust
[INFO] finished tweaking git repo https://github.com/trevorwhitney/twentyfour-days-rust
[INFO] tweaked toml for git repo https://github.com/trevorwhitney/twentyfour-days-rust written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/trevorwhitney/twentyfour-days-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b06cdf4bbf60f1ebf02f6045f605760f9e5b8b018f8927beda0ce69368198ac6
[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" "b06cdf4bbf60f1ebf02f6045f605760f9e5b8b018f8927beda0ce69368198ac6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b06cdf4bbf60f1ebf02f6045f605760f9e5b8b018f8927beda0ce69368198ac6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b06cdf4bbf60f1ebf02f6045f605760f9e5b8b018f8927beda0ce69368198ac6", kill_on_drop: false }`
[INFO] [stdout] b06cdf4bbf60f1ebf02f6045f605760f9e5b8b018f8927beda0ce69368198ac6
[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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+2ad5292aea6328113b55968b4322528d48261316" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1720731be9c695b8554cb5655e3c4041257d540b4490345fd5189ce9236fa68e
[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" "1720731be9c695b8554cb5655e3c4041257d540b4490345fd5189ce9236fa68e", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.5
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]     Checking hamming v0.1.3
[INFO] [stderr]     Checking smallvec v0.4.4
[INFO] [stderr]     Checking primal-estimate v0.2.1
[INFO] [stderr]     Checking primal-bit v0.2.4
[INFO] [stderr]     Checking primal-sieve v0.2.8
[INFO] [stderr]     Checking primal-check v0.2.3
[INFO] [stderr]     Checking primal v0.2.3
[INFO] [stderr]     Checking twentyfour-days-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.20s
[INFO] running `Command { std: "docker" "inspect" "1720731be9c695b8554cb5655e3c4041257d540b4490345fd5189ce9236fa68e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1720731be9c695b8554cb5655e3c4041257d540b4490345fd5189ce9236fa68e", kill_on_drop: false }`
[INFO] [stdout] 1720731be9c695b8554cb5655e3c4041257d540b4490345fd5189ce9236fa68e