[INFO] cloning repository https://github.com/Razakhel/rs-ds
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Razakhel/rs-ds" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRazakhel%2Frs-ds", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRazakhel%2Frs-ds'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7fad62cad817e09dbf5244be8a21479d641ec05a
[INFO] checking Razakhel/rs-ds/7fad62cad817e09dbf5244be8a21479d641ec05a against master#75530e9f72a1990ed2305e16fd51d02f47048f12 for pr-135899
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRazakhel%2Frs-ds" "/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/Razakhel/rs-ds on toolchain 75530e9f72a1990ed2305e16fd51d02f47048f12
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Razakhel/rs-ds
[INFO] finished tweaking git repo https://github.com/Razakhel/rs-ds
[INFO] tweaked toml for git repo https://github.com/Razakhel/rs-ds written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Razakhel/rs-ds 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" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "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@sha256:6475c868a6d27846ca172efb246699580b64b57a5b3744ef73949e850a31b38a" "/opt/rustwide/cargo-home/bin/cargo" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5cbf0618871da669ec2b93c49d046a25590132a7b68976e9462a1646866ae550
[INFO] running `Command { std: "docker" "start" "-a" "5cbf0618871da669ec2b93c49d046a25590132a7b68976e9462a1646866ae550", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5cbf0618871da669ec2b93c49d046a25590132a7b68976e9462a1646866ae550", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cbf0618871da669ec2b93c49d046a25590132a7b68976e9462a1646866ae550", kill_on_drop: false }`
[INFO] [stdout] 5cbf0618871da669ec2b93c49d046a25590132a7b68976e9462a1646866ae550
[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@sha256:6475c868a6d27846ca172efb246699580b64b57a5b3744ef73949e850a31b38a" "/opt/rustwide/cargo-home/bin/cargo" "+75530e9f72a1990ed2305e16fd51d02f47048f12" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0efe1364bdc5e11cb3ea89b5ce1d4d3c30de6ae4e93970943edbc24570ed4244
[INFO] running `Command { std: "docker" "start" "-a" "0efe1364bdc5e11cb3ea89b5ce1d4d3c30de6ae4e93970943edbc24570ed4244", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024
[INFO] [stderr]     Checking rs-ds v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: methods `peek`, `peek_mut`, and `into_iter` are never used
[INFO] [stdout]   --> src/linked_list.rs:38:10
[INFO] [stdout]    |
[INFO] [stdout] 18 | impl<T> List<T> {
[INFO] [stdout]    | --------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 38 |   pub fn peek(&self) -> Option<&T> {
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] ...
[INFO] [stdout] 44 |   pub fn peek_mut(&mut self) -> Option<&mut T> {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |   pub fn into_iter(self) -> IntoIter<T> {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.22s
[INFO] running `Command { std: "docker" "inspect" "0efe1364bdc5e11cb3ea89b5ce1d4d3c30de6ae4e93970943edbc24570ed4244", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0efe1364bdc5e11cb3ea89b5ce1d4d3c30de6ae4e93970943edbc24570ed4244", kill_on_drop: false }`
[INFO] [stdout] 0efe1364bdc5e11cb3ea89b5ce1d4d3c30de6ae4e93970943edbc24570ed4244