[INFO] cloning repository https://github.com/dinkdino/rust_algo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dinkdino/rust_algo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdinkdino%2Frust_algo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdinkdino%2Frust_algo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fc8630a2f999803aafc1e190f0b992eb616d28dd
[INFO] checking dinkdino/rust_algo against master#9fa580b1175018b0a276b0bc68f9827a106f7260 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdinkdino%2Frust_algo" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dinkdino/rust_algo on toolchain 9fa580b1175018b0a276b0bc68f9827a106f7260
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/dinkdino/rust_algo
[INFO] finished tweaking git repo https://github.com/dinkdino/rust_algo
[INFO] tweaked toml for git repo https://github.com/dinkdino/rust_algo written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/dinkdino/rust_algo already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 89fef1f59a89144685d6d3d550c86189908c15fd0645fcd9bcebed87e2defaf4
[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" "89fef1f59a89144685d6d3d550c86189908c15fd0645fcd9bcebed87e2defaf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "89fef1f59a89144685d6d3d550c86189908c15fd0645fcd9bcebed87e2defaf4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "89fef1f59a89144685d6d3d550c86189908c15fd0645fcd9bcebed87e2defaf4", kill_on_drop: false }`
[INFO] [stdout] 89fef1f59a89144685d6d3d550c86189908c15fd0645fcd9bcebed87e2defaf4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+9fa580b1175018b0a276b0bc68f9827a106f7260" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 97b5ef46f700ce8a33f71a16ac7a72c7f7206f8b77b7864216908a7dce0988f9
[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" "97b5ef46f700ce8a33f71a16ac7a72c7f7206f8b77b7864216908a7dce0988f9", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_algo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `heap::*`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use heap::*;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Heap`
[INFO] [stdout]  --> src/heap.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Heap<T: PartialOrd, F> {
[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: `new`
[INFO] [stdout]   --> src/heap.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(compare: F) -> Heap<T, F> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sink`
[INFO] [stdout]   --> src/heap.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn sink(&mut self, index: usize) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]   --> src/heap.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn push(&mut self, value: T) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]   --> src/heap.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn pop(&mut self) -> Option<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `heap::*`
[INFO] [stdout]  --> src/main.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use heap::*;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Heap`
[INFO] [stdout]  --> src/heap.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Heap<T: PartialOrd, F> {
[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: `new`
[INFO] [stdout]   --> src/heap.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(compare: F) -> Heap<T, F> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `sink`
[INFO] [stdout]   --> src/heap.rs:15:8
[INFO] [stdout]    |
[INFO] [stdout] 15 |     fn sink(&mut self, index: usize) {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `push`
[INFO] [stdout]   --> src/heap.rs:39:12
[INFO] [stdout]    |
[INFO] [stdout] 39 |     pub fn push(&mut self, value: T) {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `pop`
[INFO] [stdout]   --> src/heap.rs:43:12
[INFO] [stdout]    |
[INFO] [stdout] 43 |     pub fn pop(&mut self) -> Option<T> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.79s
[INFO] running `Command { std: "docker" "inspect" "97b5ef46f700ce8a33f71a16ac7a72c7f7206f8b77b7864216908a7dce0988f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97b5ef46f700ce8a33f71a16ac7a72c7f7206f8b77b7864216908a7dce0988f9", kill_on_drop: false }`
[INFO] [stdout] 97b5ef46f700ce8a33f71a16ac7a72c7f7206f8b77b7864216908a7dce0988f9