[INFO] cloning repository https://github.com/bddap/chaincad
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bddap/chaincad" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbddap%2Fchaincad", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbddap%2Fchaincad'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 141df341f4df4635c8b76e73b06c8feb8e2521a7
[INFO] checking bddap/chaincad against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbddap%2Fchaincad" "/workspace/builds/worker-13/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-13/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bddap/chaincad on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bddap/chaincad
[INFO] finished tweaking git repo https://github.com/bddap/chaincad
[INFO] tweaked toml for git repo https://github.com/bddap/chaincad written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] crate git repo https://github.com/bddap/chaincad already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7981777b500c1bbafc98ca716c5159a7e149b9aa22be8c3631b722aa9208742d
[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" "7981777b500c1bbafc98ca716c5159a7e149b9aa22be8c3631b722aa9208742d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7981777b500c1bbafc98ca716c5159a7e149b9aa22be8c3631b722aa9208742d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7981777b500c1bbafc98ca716c5159a7e149b9aa22be8c3631b722aa9208742d", kill_on_drop: false }`
[INFO] [stdout] 7981777b500c1bbafc98ca716c5159a7e149b9aa22be8c3631b722aa9208742d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] facd6dad9c76664b87b6714d0a408a979200837684e4c3fd7ceb531ca396a19a
[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" "facd6dad9c76664b87b6714d0a408a979200837684e4c3fd7ceb531ca396a19a", kill_on_drop: false }`
[INFO] [stderr]     Checking chaincad v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `Parent`
[INFO] [stdout]  --> src/eval.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     Parent(Vec<DeSugaredClip<'a>>),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Child`
[INFO] [stdout]  --> src/eval.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Child(&'a [char]),
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `desugar`
[INFO] [stdout]   --> src/eval.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn desugar<'b>(src: &'b Clip) -> DeSugaredClip<'b> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `desugar_parent`
[INFO] [stdout]   --> src/eval.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn desugar_parent<'b>(parent: &'b [Clip]) -> DeSugaredClip<'b> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.90s
[INFO] running `Command { std: "docker" "inspect" "facd6dad9c76664b87b6714d0a408a979200837684e4c3fd7ceb531ca396a19a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "facd6dad9c76664b87b6714d0a408a979200837684e4c3fd7ceb531ca396a19a", kill_on_drop: false }`
[INFO] [stdout] facd6dad9c76664b87b6714d0a408a979200837684e4c3fd7ceb531ca396a19a