[INFO] cloning repository https://github.com/Enlightenments/rust_day_code
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Enlightenments/rust_day_code" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEnlightenments%2Frust_day_code", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEnlightenments%2Frust_day_code'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ea182c36938a30a9b62cf10af3def946bc4da90c
[INFO] documenting Enlightenments/rust_day_code against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEnlightenments%2Frust_day_code" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Enlightenments/rust_day_code on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Enlightenments/rust_day_code
[INFO] finished tweaking git repo https://github.com/Enlightenments/rust_day_code
[INFO] tweaked toml for git repo https://github.com/Enlightenments/rust_day_code written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/Enlightenments/rust_day_code already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48b5b0da17d82229724bc92f180001697b2b24694c7f4946dc7c07d0f7bd08f1
[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" "48b5b0da17d82229724bc92f180001697b2b24694c7f4946dc7c07d0f7bd08f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48b5b0da17d82229724bc92f180001697b2b24694c7f4946dc7c07d0f7bd08f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48b5b0da17d82229724bc92f180001697b2b24694c7f4946dc7c07d0f7bd08f1", kill_on_drop: false }`
[INFO] [stdout] 48b5b0da17d82229724bc92f180001697b2b24694c7f4946dc7c07d0f7bd08f1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "RUSTDOCFLAGS=--cap-lints=warn" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--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] b0fff4d6baf6be694e29b8141c7399c8ad05494c5cbec14d7c71728c55c55314
[INFO] running `Command { std: "docker" "start" "-a" "b0fff4d6baf6be694e29b8141c7399c8ad05494c5cbec14d7c71728c55c55314", kill_on_drop: false }`
[INFO] [stderr]     Checking util v0.1.0 (/opt/rustwide/workdir/util)
[INFO] [stdout] warning: unused variable: `s1`
[INFO] [stdout]  --> util/src/year2022/may/day22.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 5 |     let s1 = "hello world";
[INFO] [stdout]   |         ^^ help: if this is intentional, prefix it with an underscore: `_s1`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `s2` is never read
[INFO] [stdout]  --> util/src/year2022/may/day22.rs:6:13
[INFO] [stdout]   |
[INFO] [stdout] 6 |     let mut s2 = String::from("hello world");
[INFO] [stdout]   |             ^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Person`
[INFO] [stdout]   --> util/src/year2022/may/day22.rs:31:8
[INFO] [stdout]    |
[INFO] [stdout] 31 | struct Person<'a>{
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]  Documenting rust_day v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.45s
[INFO] running `Command { std: "docker" "inspect" "b0fff4d6baf6be694e29b8141c7399c8ad05494c5cbec14d7c71728c55c55314", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0fff4d6baf6be694e29b8141c7399c8ad05494c5cbec14d7c71728c55c55314", kill_on_drop: false }`
[INFO] [stdout] b0fff4d6baf6be694e29b8141c7399c8ad05494c5cbec14d7c71728c55c55314