[INFO] cloning repository https://github.com/Riku-KANO/ahc044
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Riku-KANO/ahc044" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRiku-KANO%2Fahc044", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRiku-KANO%2Fahc044'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 211062f6c092a8d39e16187071a3add6dbfbdeb1
[INFO] checking Riku-KANO/ahc044 against try#09eeb2bacb9b40b2ed1d47f03177442c0632cda1 for pr-157710
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FRiku-KANO%2Fahc044" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Riku-KANO/ahc044
[INFO] finished tweaking git repo https://github.com/Riku-KANO/ahc044
[INFO] tweaked toml for git repo https://github.com/Riku-KANO/ahc044 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Riku-KANO/ahc044 on toolchain 09eeb2bacb9b40b2ed1d47f03177442c0632cda1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+09eeb2bacb9b40b2ed1d47f03177442c0632cda1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Riku-KANO/ahc044 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" "+09eeb2bacb9b40b2ed1d47f03177442c0632cda1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3a6becf2bc8dde7f3fa57ede90e4f284e72d296796fc446bbb1e2c7cc0530151" "sleep" "infinity", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "59678707ec6be313f5b5c68a999b04468e5abc87c05aef2eda4e45b2bc91f4e6" "/opt/rustwide/cargo-home/bin/cargo" "+09eeb2bacb9b40b2ed1d47f03177442c0632cda1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59678707ec6be313f5b5c68a999b04468e5abc87c05aef2eda4e45b2bc91f4e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "59678707ec6be313f5b5c68a999b04468e5abc87c05aef2eda4e45b2bc91f4e6" "/opt/rustwide/cargo-home/bin/cargo" "+09eeb2bacb9b40b2ed1d47f03177442c0632cda1" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let mut best_score;
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:51:16
[INFO] [stdout]    |
[INFO] [stdout] 51 |         .map(|(i, &t)| t.0)
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `best_eval_score` is never read
[INFO] [stdout]   --> src/main.rs:30:31
[INFO] [stdout]    |
[INFO] [stdout] 30 |       let mut best_eval_score = 0.0;
[INFO] [stdout]    |                                 ^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 90 | /     best_eval_score = eval_score(
[INFO] [stdout] 91 | |         input,
[INFO] [stdout] 92 | |         &Output {
[INFO] [stdout] 93 | |             nexts: output.clone(),
[INFO] [stdout] 94 | |         },
[INFO] [stdout] 95 | |     );
[INFO] [stdout]    | |_____- `best_eval_score` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:158:9
[INFO] [stdout]     |
[INFO] [stdout] 158 |     for i in 0..input.l {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]    --> src/main.rs:199:21
[INFO] [stdout]     |
[INFO] [stdout] 199 |         let (index, target) = targets_with_index[i];
[INFO] [stdout]     |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `targets_with_index`
[INFO] [stdout]    --> src/main.rs:210:5
[INFO] [stdout]     |
[INFO] [stdout] 210 |     targets_with_index: &Vec<(usize, &usize)>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_targets_with_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:228:9
[INFO] [stdout]     |
[INFO] [stdout] 228 |     for i in 0..input.l {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:253:9
[INFO] [stdout]     |
[INFO] [stdout] 253 |     for i in 0..input.l {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `naive` is never used
[INFO] [stdout]    --> src/main.rs:190:4
[INFO] [stdout]     |
[INFO] [stdout] 190 | fn naive(input: &Input) -> Output {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:29:9
[INFO] [stdout]    |
[INFO] [stdout] 29 |     let mut best_score;
[INFO] [stdout]    |         ----^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/main.rs:51:16
[INFO] [stdout]    |
[INFO] [stdout] 51 |         .map(|(i, &t)| t.0)
[INFO] [stdout]    |                ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `best_eval_score` is never read
[INFO] [stdout]   --> src/main.rs:30:31
[INFO] [stdout]    |
[INFO] [stdout] 30 |       let mut best_eval_score = 0.0;
[INFO] [stdout]    |                                 ^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 90 | /     best_eval_score = eval_score(
[INFO] [stdout] 91 | |         input,
[INFO] [stdout] 92 | |         &Output {
[INFO] [stdout] 93 | |             nexts: output.clone(),
[INFO] [stdout] 94 | |         },
[INFO] [stdout] 95 | |     );
[INFO] [stdout]    | |_____- `best_eval_score` is overwritten here before the previous value is read
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:158:9
[INFO] [stdout]     |
[INFO] [stdout] 158 |     for i in 0..input.l {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `target`
[INFO] [stdout]    --> src/main.rs:199:21
[INFO] [stdout]     |
[INFO] [stdout] 199 |         let (index, target) = targets_with_index[i];
[INFO] [stdout]     |                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_target`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `targets_with_index`
[INFO] [stdout]    --> src/main.rs:210:5
[INFO] [stdout]     |
[INFO] [stdout] 210 |     targets_with_index: &Vec<(usize, &usize)>,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_targets_with_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:228:9
[INFO] [stdout]     |
[INFO] [stdout] 228 |     for i in 0..input.l {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/main.rs:253:9
[INFO] [stdout]     |
[INFO] [stdout] 253 |     for i in 0..input.l {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `naive` is never used
[INFO] [stdout]    --> src/main.rs:190:4
[INFO] [stdout]     |
[INFO] [stdout] 190 | fn naive(input: &Input) -> Output {
[INFO] [stdout]     |    ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 49.56s
[INFO] running `Command { std: "docker" "inspect" "59678707ec6be313f5b5c68a999b04468e5abc87c05aef2eda4e45b2bc91f4e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59678707ec6be313f5b5c68a999b04468e5abc87c05aef2eda4e45b2bc91f4e6", kill_on_drop: false }`
[INFO] [stdout] 59678707ec6be313f5b5c68a999b04468e5abc87c05aef2eda4e45b2bc91f4e6
