[INFO] cloning repository https://github.com/Frozen/hierarchy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Frozen/hierarchy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrozen%2Fhierarchy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrozen%2Fhierarchy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] e43b6ec362026353024196540157938f151785de
[INFO] building Frozen/hierarchy against master#ad211ced81509462cdfe4c29ed10f97279a0acae for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FFrozen%2Fhierarchy" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Frozen/hierarchy on toolchain ad211ced81509462cdfe4c29ed10f97279a0acae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Frozen/hierarchy
[INFO] finished tweaking git repo https://github.com/Frozen/hierarchy
[INFO] tweaked toml for git repo https://github.com/Frozen/hierarchy written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Frozen/hierarchy already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 09633f10734bd978d1f391faec66ce2a7a15bb9506bb03c3a5cd0519ec5051af
[INFO] running `Command { std: "docker" "start" "-a" "09633f10734bd978d1f391faec66ce2a7a15bb9506bb03c3a5cd0519ec5051af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "09633f10734bd978d1f391faec66ce2a7a15bb9506bb03c3a5cd0519ec5051af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "09633f10734bd978d1f391faec66ce2a7a15bb9506bb03c3a5cd0519ec5051af", kill_on_drop: false }`
[INFO] [stdout] 09633f10734bd978d1f391faec66ce2a7a15bb9506bb03c3a5cd0519ec5051af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/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" "RUSTDOCFLAGS=--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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4def6164cdd7efb85c0270ce3c5e8e664abd34c362def19fde3a60fa8a1dac6
[INFO] running `Command { std: "docker" "start" "-a" "e4def6164cdd7efb85c0270ce3c5e8e664abd34c362def19fde3a60fa8a1dac6", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]    Compiling hierarchy v0.1.5 (/opt/rustwide/workdir)
[INFO] [stdout] error: fields `tree` and `parent` are never read
[INFO] [stdout]    --> src/lib.rs:112:5
[INFO] [stdout]     |
[INFO] [stdout] 108 | pub struct TreeIterator<'a, T: 'a> {
[INFO] [stdout]     |            ------------ fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 112 |     tree: &'a HashMap<Parent, Vec<Child>>,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 113 |     /// root node, we should iterate over it children
[INFO] [stdout] 114 |     parent: usize,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `TreeIterator` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]    --> src/lib.rs:3:9
[INFO] [stdout]     |
[INFO] [stdout] 3   | #![deny(warnings)]
[INFO] [stdout]     |         ^^^^^^^^
[INFO] [stdout]     = note: `#[deny(dead_code)]` implied by `#[deny(warnings)]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hierarchy` (lib) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "e4def6164cdd7efb85c0270ce3c5e8e664abd34c362def19fde3a60fa8a1dac6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4def6164cdd7efb85c0270ce3c5e8e664abd34c362def19fde3a60fa8a1dac6", kill_on_drop: false }`
[INFO] [stdout] e4def6164cdd7efb85c0270ce3c5e8e664abd34c362def19fde3a60fa8a1dac6
