[INFO] cloning repository https://github.com/spencer-thompson/euler.rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/spencer-thompson/euler.rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspencer-thompson%2Feuler.rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspencer-thompson%2Feuler.rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d63ec4e37bca761c8bbf89c958805ca6ecaef83e
[INFO] checking spencer-thompson/euler.rs against master#8317fef20409adedaa7c385fa6e954867bf626fc for pr-154149-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fspencer-thompson%2Feuler.rs" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/spencer-thompson/euler.rs
[INFO] finished tweaking git repo https://github.com/spencer-thompson/euler.rs
[INFO] tweaked toml for git repo https://github.com/spencer-thompson/euler.rs written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/spencer-thompson/euler.rs on toolchain 8317fef20409adedaa7c385fa6e954867bf626fc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8317fef20409adedaa7c385fa6e954867bf626fc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/spencer-thompson/euler.rs 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" "+8317fef20409adedaa7c385fa6e954867bf626fc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8317fef20409adedaa7c385fa6e954867bf626fc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6a2bce71eb6fb67d974bc9fca3a418bfc9a70a62e87f28acdc9671f796346881
[INFO] running `Command { std: "docker" "start" "-a" "6a2bce71eb6fb67d974bc9fca3a418bfc9a70a62e87f28acdc9671f796346881", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6a2bce71eb6fb67d974bc9fca3a418bfc9a70a62e87f28acdc9671f796346881", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a2bce71eb6fb67d974bc9fca3a418bfc9a70a62e87f28acdc9671f796346881", kill_on_drop: false }`
[INFO] [stdout] 6a2bce71eb6fb67d974bc9fca3a418bfc9a70a62e87f28acdc9671f796346881
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+8317fef20409adedaa7c385fa6e954867bf626fc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e7ece430a432e918d849b351f281d83975f95200848672ca00d2c98cffd40d90
[INFO] running `Command { std: "docker" "start" "-a" "e7ece430a432e918d849b351f281d83975f95200848672ca00d2c98cffd40d90", kill_on_drop: false }`
[INFO] [stderr]     Checking euler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `problem_input`
[INFO] [stdout]   --> src/e_14.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let problem_input = Collatz::new(13);
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_problem_input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate` is never used
[INFO] [stdout]  --> src/e_7.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn generate(n: usize, memo: &mut HashMap<usize, Vec<usize>>) -> Vec<usize> {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `correct_num` is never used
[INFO] [stdout]   --> src/e_7.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn correct_num(n: usize) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/e_7.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `problem_input`
[INFO] [stdout]   --> src/e_14.rs:44:9
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let problem_input = Collatz::new(13);
[INFO] [stdout]    |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_problem_input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `generate` is never used
[INFO] [stdout]  --> src/e_7.rs:3:4
[INFO] [stdout]   |
[INFO] [stdout] 3 | fn generate(n: usize, memo: &mut HashMap<usize, Vec<usize>>) -> Vec<usize> {
[INFO] [stdout]   |    ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `correct_num` is never used
[INFO] [stdout]   --> src/e_7.rs:25:4
[INFO] [stdout]    |
[INFO] [stdout] 25 | fn correct_num(n: usize) -> usize {
[INFO] [stdout]    |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run` is never used
[INFO] [stdout]   --> src/e_7.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 | pub fn run() {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.17s
[INFO] running `Command { std: "docker" "inspect" "e7ece430a432e918d849b351f281d83975f95200848672ca00d2c98cffd40d90", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e7ece430a432e918d849b351f281d83975f95200848672ca00d2c98cffd40d90", kill_on_drop: false }`
[INFO] [stdout] e7ece430a432e918d849b351f281d83975f95200848672ca00d2c98cffd40d90