[INFO] cloning repository https://github.com/OrfeasLitos/categories-for-programmers
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/OrfeasLitos/categories-for-programmers" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOrfeasLitos%2Fcategories-for-programmers", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOrfeasLitos%2Fcategories-for-programmers'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ed6f24a3fb41bfa5525007d1da4c4471d04212e7
[INFO] checking OrfeasLitos/categories-for-programmers against master#5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FOrfeasLitos%2Fcategories-for-programmers" "/workspace/builds/worker-10/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-10/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/OrfeasLitos/categories-for-programmers on toolchain 5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/OrfeasLitos/categories-for-programmers
[INFO] finished tweaking git repo https://github.com/OrfeasLitos/categories-for-programmers
[INFO] tweaked toml for git repo https://github.com/OrfeasLitos/categories-for-programmers written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] crate git repo https://github.com/OrfeasLitos/categories-for-programmers already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e2d723c05fb1df37682691c205d5dbc9833e111bc03c8c416c8575cbd5811768
[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" "e2d723c05fb1df37682691c205d5dbc9833e111bc03c8c416c8575cbd5811768", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e2d723c05fb1df37682691c205d5dbc9833e111bc03c8c416c8575cbd5811768", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2d723c05fb1df37682691c205d5dbc9833e111bc03c8c416c8575cbd5811768", kill_on_drop: false }`
[INFO] [stdout] e2d723c05fb1df37682691c205d5dbc9833e111bc03c8c416c8575cbd5811768
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+5a8a44196b3cf099f8c9b0156bd902eaec0b4e5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 03d190e1b834ecccfbf2bdeb362fe973797d96123fedb6f6279f965446bbca68
[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" "03d190e1b834ecccfbf2bdeb362fe973797d96123fedb6f6279f965446bbca68", kill_on_drop: false }`
[INFO] [stderr]     Checking categories-for-programmers v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum is never used: `Shape`
[INFO] [stdout]  --> src/shapes_enum.rs:3:6
[INFO] [stdout]   |
[INFO] [stdout] 3 | enum Shape {
[INFO] [stdout]   |      ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `area`
[INFO] [stdout]   --> src/shapes_enum.rs:10:8
[INFO] [stdout]    |
[INFO] [stdout] 10 |     fn area(&self) -> f64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `circ`
[INFO] [stdout]   --> src/shapes_enum.rs:18:8
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn circ(&self) -> f64 {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `fmap`
[INFO] [stdout]  --> src/reader.rs:1:4
[INFO] [stdout]   |
[INFO] [stdout] 1 | fn fmap<'a, A, B, R>(f: &'a dyn Fn(A) -> B, g: &'a dyn Fn(R) -> A) -> impl Fn(R) -> B + 'a {
[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 0.60s
[INFO] running `Command { std: "docker" "inspect" "03d190e1b834ecccfbf2bdeb362fe973797d96123fedb6f6279f965446bbca68", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "03d190e1b834ecccfbf2bdeb362fe973797d96123fedb6f6279f965446bbca68", kill_on_drop: false }`
[INFO] [stdout] 03d190e1b834ecccfbf2bdeb362fe973797d96123fedb6f6279f965446bbca68