[INFO] cloning repository https://github.com/AWildDevAppears/n00t
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/AWildDevAppears/n00t" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAWildDevAppears%2Fn00t", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAWildDevAppears%2Fn00t'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 391f75a2c4aac5ae4c56215f1cf44c86c72ee7cb
[INFO] checking AWildDevAppears/n00t against try#b2f80f6008cdafc35b4472bd46afa16cc6b0cd63 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FAWildDevAppears%2Fn00t" "/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/AWildDevAppears/n00t on toolchain b2f80f6008cdafc35b4472bd46afa16cc6b0cd63
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/AWildDevAppears/n00t
[INFO] finished tweaking git repo https://github.com/AWildDevAppears/n00t
[INFO] tweaked toml for git repo https://github.com/AWildDevAppears/n00t written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/AWildDevAppears/n00t already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded redox_syscall v0.1.42
[INFO] [stderr]   Downloaded miniz_oxide_c_api v0.2.0
[INFO] [stderr]   Downloaded miniz_oxide v0.2.0
[INFO] [stderr]   Downloaded filetime v0.2.4
[INFO] [stderr]   Downloaded ncurses v5.97.0
[INFO] [stderr]   Downloaded miniz-sys v0.1.11
[INFO] [stderr]   Downloaded flate2 v1.0.4
[INFO] [stderr]   Downloaded tar v0.4.20
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "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] aefe9983cf86ed6cf785c7531ad88e168d59bb883e46a207598457af9e5668d0
[INFO] running `Command { std: "docker" "start" "-a" "aefe9983cf86ed6cf785c7531ad88e168d59bb883e46a207598457af9e5668d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aefe9983cf86ed6cf785c7531ad88e168d59bb883e46a207598457af9e5668d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aefe9983cf86ed6cf785c7531ad88e168d59bb883e46a207598457af9e5668d0", kill_on_drop: false }`
[INFO] [stdout] aefe9983cf86ed6cf785c7531ad88e168d59bb883e46a207598457af9e5668d0
[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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b2f80f6008cdafc35b4472bd46afa16cc6b0cd63" "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] b4cf77ef3722789d6f3f65ef30acd63b0fe250cbfb9bd6bc4025763ec8fde71c
[INFO] running `Command { std: "docker" "start" "-a" "b4cf77ef3722789d6f3f65ef30acd63b0fe250cbfb9bd6bc4025763ec8fde71c", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.43
[INFO] [stderr]    Compiling cc v1.0.25
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking cfg-if v0.1.6
[INFO] [stderr]     Checking rustc-serialize v0.3.24
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking filetime v0.2.4
[INFO] [stderr]     Checking time v0.1.40
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking tar v0.4.20
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]    Compiling miniz-sys v0.1.11
[INFO] [stderr]    Compiling ncurses v5.97.0
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]     Checking flate2 v1.0.4
[INFO] [stderr]     Checking n00t v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.31s
[INFO] running `Command { std: "docker" "inspect" "b4cf77ef3722789d6f3f65ef30acd63b0fe250cbfb9bd6bc4025763ec8fde71c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b4cf77ef3722789d6f3f65ef30acd63b0fe250cbfb9bd6bc4025763ec8fde71c", kill_on_drop: false }`
[INFO] [stdout] b4cf77ef3722789d6f3f65ef30acd63b0fe250cbfb9bd6bc4025763ec8fde71c