[INFO] cloning repository https://github.com/kmakeev/puzzle15rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kmakeev/puzzle15rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkmakeev%2Fpuzzle15rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkmakeev%2Fpuzzle15rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2a0a1577f752888a68360bf2d818b46b2513cdd5
[INFO] checking kmakeev/puzzle15rust against master#5518eaa946291f00471af8b254b2a1715f234882 for pr-120393-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkmakeev%2Fpuzzle15rust" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kmakeev/puzzle15rust on toolchain 5518eaa946291f00471af8b254b2a1715f234882
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kmakeev/puzzle15rust
[INFO] finished tweaking git repo https://github.com/kmakeev/puzzle15rust
[INFO] tweaked toml for git repo https://github.com/kmakeev/puzzle15rust written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/kmakeev/puzzle15rust 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" "+5518eaa946291f00471af8b254b2a1715f234882" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bd581cf2ca58f8c2f679e8d4e8c777c6866b8a62725d59b7d89897c61c7519de
[INFO] running `Command { std: "docker" "start" "-a" "bd581cf2ca58f8c2f679e8d4e8c777c6866b8a62725d59b7d89897c61c7519de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bd581cf2ca58f8c2f679e8d4e8c777c6866b8a62725d59b7d89897c61c7519de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bd581cf2ca58f8c2f679e8d4e8c777c6866b8a62725d59b7d89897c61c7519de", kill_on_drop: false }`
[INFO] [stdout] bd581cf2ca58f8c2f679e8d4e8c777c6866b8a62725d59b7d89897c61c7519de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+5518eaa946291f00471af8b254b2a1715f234882" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fd0c5f61c06ffb580207e8159bb3467b0fbac5b57542e8d335fd14e7bc9d195f
[INFO] running `Command { std: "docker" "start" "-a" "fd0c5f61c06ffb580207e8159bb3467b0fbac5b57542e8d335fd14e7bc9d195f", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling proc-macro2 v1.0.4
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]    Compiling rayon-core v1.5.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking puzzle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]  --> src/puzzle.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::time;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/puzzle.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/puzzle.rs:355:25
[INFO] [stdout]     |
[INFO] [stdout] 355 |                     tmp[(pos as usize)] = -1;
[INFO] [stdout]     |                         ^            ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 355 -                     tmp[(pos as usize)] = -1;
[INFO] [stdout] 355 +                     tmp[pos as usize] = -1;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/puzzle.rs:366:25
[INFO] [stdout]     |
[INFO] [stdout] 366 |                     tmp[(pos as usize)] = -1;
[INFO] [stdout]     |                         ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 366 -                     tmp[(pos as usize)] = -1;
[INFO] [stdout] 366 +                     tmp[pos as usize] = -1;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/puzzle.rs:377:25
[INFO] [stdout]     |
[INFO] [stdout] 377 |                     tmp[(pos as usize)] = -1;
[INFO] [stdout]     |                         ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 377 -                     tmp[(pos as usize)] = -1;
[INFO] [stdout] 377 +                     tmp[pos as usize] = -1;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/puzzle.rs:388:25
[INFO] [stdout]     |
[INFO] [stdout] 388 |                     tmp[(pos as usize)] = -1;
[INFO] [stdout]     |                         ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 388 -                     tmp[(pos as usize)] = -1;
[INFO] [stdout] 388 +                     tmp[pos as usize] = -1;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]  --> src/puzzle.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::time;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/puzzle.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/puzzle.rs:355:25
[INFO] [stdout]     |
[INFO] [stdout] 355 |                     tmp[(pos as usize)] = -1;
[INFO] [stdout]     |                         ^            ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 355 -                     tmp[(pos as usize)] = -1;
[INFO] [stdout] 355 +                     tmp[pos as usize] = -1;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/puzzle.rs:366:25
[INFO] [stdout]     |
[INFO] [stdout] 366 |                     tmp[(pos as usize)] = -1;
[INFO] [stdout]     |                         ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 366 -                     tmp[(pos as usize)] = -1;
[INFO] [stdout] 366 +                     tmp[pos as usize] = -1;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/puzzle.rs:377:25
[INFO] [stdout]     |
[INFO] [stdout] 377 |                     tmp[(pos as usize)] = -1;
[INFO] [stdout]     |                         ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 377 -                     tmp[(pos as usize)] = -1;
[INFO] [stdout] 377 +                     tmp[pos as usize] = -1;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/puzzle.rs:388:25
[INFO] [stdout]     |
[INFO] [stdout] 388 |                     tmp[(pos as usize)] = -1;
[INFO] [stdout]     |                         ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 388 -                     tmp[(pos as usize)] = -1;
[INFO] [stdout] 388 +                     tmp[pos as usize] = -1;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:147:21
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 let mut pos = pos_opt.unwrap() as i8;
[INFO] [stdout]     |                     ----^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `val` is never read
[INFO] [stdout]    --> src/puzzle.rs:194:17
[INFO] [stdout]     |
[INFO] [stdout] 194 |         let mut val = vec![];
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/puzzle.rs:196:19
[INFO] [stdout]     |
[INFO] [stdout] 196 |         let (key, value) = best.unwrap();
[INFO] [stdout]     |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/puzzle.rs:193:61
[INFO] [stdout]     |
[INFO] [stdout] 193 |     fn get_best_step(& self, map: & HashMap<Vec<i8>, Step>, f: u32) -> Vec<i8> {
[INFO] [stdout]     |                                                             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k1`
[INFO] [stdout]    --> src/puzzle.rs:195:44
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let best = map.par_iter().min_by(|(k1, s1),(k2,s2)| (s1.set.f.cmp(&s2.set.f)));
[INFO] [stdout]     |                                            ^^ help: if this is intentional, prefix it with an underscore: `_k1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k2`
[INFO] [stdout]    --> src/puzzle.rs:195:53
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let best = map.par_iter().min_by(|(k1, s1),(k2,s2)| (s1.set.f.cmp(&s2.set.f)));
[INFO] [stdout]     |                                                     ^^ help: if this is intentional, prefix it with an underscore: `_k2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `val` is never read
[INFO] [stdout]    --> src/puzzle.rs:202:17
[INFO] [stdout]     |
[INFO] [stdout] 202 |         let mut val = vec![];
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/puzzle.rs:204:19
[INFO] [stdout]     |
[INFO] [stdout] 204 |         let (key, value) = result.unwrap();
[INFO] [stdout]     |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k1`
[INFO] [stdout]    --> src/puzzle.rs:203:50
[INFO] [stdout]     |
[INFO] [stdout] 203 |         let result = map.par_iter().find_first(|(k1, s1)| (s1.hash_current == hash));
[INFO] [stdout]     |                                                  ^^ help: if this is intentional, prefix it with an underscore: `_k1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h`
[INFO] [stdout]    --> src/puzzle.rs:210:13
[INFO] [stdout]     |
[INFO] [stdout] 210 |         let h:i8 = self.size_h;
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_h`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/puzzle.rs:211:13
[INFO] [stdout]     |
[INFO] [stdout] 211 |         let v:i8 = self.size_v;
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cost`
[INFO] [stdout]    --> src/puzzle.rs:218:14
[INFO] [stdout]     |
[INFO] [stdout] 218 |         let (cost, h) = self.cost(self.start.clone());
[INFO] [stdout]     |              ^^^^ help: if this is intentional, prefix it with an underscore: `_cost`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]    --> src/puzzle.rs:245:26
[INFO] [stdout]     |
[INFO] [stdout] 245 |                     Some(result) => {continue},
[INFO] [stdout]     |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:224:17
[INFO] [stdout]     |
[INFO] [stdout] 224 |             let mut now = SystemTime::now();
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:229:17
[INFO] [stdout]     |
[INFO] [stdout] 229 |             let mut val = self.get_best_step(&h_open_sets, f);
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:236:25
[INFO] [stdout]     |
[INFO] [stdout] 236 |                     let mut val = self.get_by_hash(&mut h_close_sets, prev.hash_prev);
[INFO] [stdout]     |                         ----^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tmp` is never read
[INFO] [stdout]    --> src/puzzle.rs:286:21
[INFO] [stdout]     |
[INFO] [stdout] 286 |             let mut tmp: Vec<i8> = vec![];
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tmp` is never read
[INFO] [stdout]    --> src/puzzle.rs:335:21
[INFO] [stdout]     |
[INFO] [stdout] 335 |             let mut tmp: Vec<i8> = vec![];
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:448:25
[INFO] [stdout]     |
[INFO] [stdout] 448 |                     let mut v: i8 = (((*j-1) / self.size_v) - (c as i8 / self.size_v)).abs();
[INFO] [stdout]     |                         ----^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:449:25
[INFO] [stdout]     |
[INFO] [stdout] 449 |                     let mut h: i8 = (((*j-1) % self.size_h) - (c as i8 % self.size_h)).abs();
[INFO] [stdout]     |                         ----^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:470:21
[INFO] [stdout]     |
[INFO] [stdout] 470 |                 let mut position1: i8;
[INFO] [stdout]     |                     ----^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:471:21
[INFO] [stdout]     |
[INFO] [stdout] 471 |                 let mut position2: i8;
[INFO] [stdout]     |                     ----^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:147:21
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 let mut pos = pos_opt.unwrap() as i8;
[INFO] [stdout]     |                     ----^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `val` is never read
[INFO] [stdout]    --> src/puzzle.rs:194:17
[INFO] [stdout]     |
[INFO] [stdout] 194 |         let mut val = vec![];
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/puzzle.rs:196:19
[INFO] [stdout]     |
[INFO] [stdout] 196 |         let (key, value) = best.unwrap();
[INFO] [stdout]     |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/puzzle.rs:193:61
[INFO] [stdout]     |
[INFO] [stdout] 193 |     fn get_best_step(& self, map: & HashMap<Vec<i8>, Step>, f: u32) -> Vec<i8> {
[INFO] [stdout]     |                                                             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k1`
[INFO] [stdout]    --> src/puzzle.rs:195:44
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let best = map.par_iter().min_by(|(k1, s1),(k2,s2)| (s1.set.f.cmp(&s2.set.f)));
[INFO] [stdout]     |                                            ^^ help: if this is intentional, prefix it with an underscore: `_k1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k2`
[INFO] [stdout]    --> src/puzzle.rs:195:53
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let best = map.par_iter().min_by(|(k1, s1),(k2,s2)| (s1.set.f.cmp(&s2.set.f)));
[INFO] [stdout]     |                                                     ^^ help: if this is intentional, prefix it with an underscore: `_k2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `val` is never read
[INFO] [stdout]    --> src/puzzle.rs:202:17
[INFO] [stdout]     |
[INFO] [stdout] 202 |         let mut val = vec![];
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/puzzle.rs:204:19
[INFO] [stdout]     |
[INFO] [stdout] 204 |         let (key, value) = result.unwrap();
[INFO] [stdout]     |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k1`
[INFO] [stdout]    --> src/puzzle.rs:203:50
[INFO] [stdout]     |
[INFO] [stdout] 203 |         let result = map.par_iter().find_first(|(k1, s1)| (s1.hash_current == hash));
[INFO] [stdout]     |                                                  ^^ help: if this is intentional, prefix it with an underscore: `_k1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h`
[INFO] [stdout]    --> src/puzzle.rs:210:13
[INFO] [stdout]     |
[INFO] [stdout] 210 |         let h:i8 = self.size_h;
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_h`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/puzzle.rs:211:13
[INFO] [stdout]     |
[INFO] [stdout] 211 |         let v:i8 = self.size_v;
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cost`
[INFO] [stdout]    --> src/puzzle.rs:218:14
[INFO] [stdout]     |
[INFO] [stdout] 218 |         let (cost, h) = self.cost(self.start.clone());
[INFO] [stdout]     |              ^^^^ help: if this is intentional, prefix it with an underscore: `_cost`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]    --> src/puzzle.rs:245:26
[INFO] [stdout]     |
[INFO] [stdout] 245 |                     Some(result) => {continue},
[INFO] [stdout]     |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:224:17
[INFO] [stdout]     |
[INFO] [stdout] 224 |             let mut now = SystemTime::now();
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:229:17
[INFO] [stdout]     |
[INFO] [stdout] 229 |             let mut val = self.get_best_step(&h_open_sets, f);
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:236:25
[INFO] [stdout]     |
[INFO] [stdout] 236 |                     let mut val = self.get_by_hash(&mut h_close_sets, prev.hash_prev);
[INFO] [stdout]     |                         ----^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tmp` is never read
[INFO] [stdout]    --> src/puzzle.rs:286:21
[INFO] [stdout]     |
[INFO] [stdout] 286 |             let mut tmp: Vec<i8> = vec![];
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tmp` is never read
[INFO] [stdout]    --> src/puzzle.rs:335:21
[INFO] [stdout]     |
[INFO] [stdout] 335 |             let mut tmp: Vec<i8> = vec![];
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:448:25
[INFO] [stdout]     |
[INFO] [stdout] 448 |                     let mut v: i8 = (((*j-1) / self.size_v) - (c as i8 / self.size_v)).abs();
[INFO] [stdout]     |                         ----^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:449:25
[INFO] [stdout]     |
[INFO] [stdout] 449 |                     let mut h: i8 = (((*j-1) % self.size_h) - (c as i8 % self.size_h)).abs();
[INFO] [stdout]     |                         ----^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:470:21
[INFO] [stdout]     |
[INFO] [stdout] 470 |                 let mut position1: i8;
[INFO] [stdout]     |                     ----^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:471:21
[INFO] [stdout]     |
[INFO] [stdout] 471 |                 let mut position2: i8;
[INFO] [stdout]     |                     ----^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count_solutions` is never read
[INFO] [stdout]   --> src/main.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let mut count_solutions:i32 = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/main.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |         Err(n) => {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/main.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |         Err(n) => {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/main.rs:104:17
[INFO] [stdout]     |
[INFO] [stdout] 104 |             Err(n) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/main.rs:146:32
[INFO] [stdout]     |
[INFO] [stdout] 146 | ...                   Ok(t) => {}
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/main.rs:155:24
[INFO] [stdout]     |
[INFO] [stdout] 155 |                     Ok(t) => {println!();
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut size_h:i8;
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut size_v:i8;
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:131:29
[INFO] [stdout]     |
[INFO] [stdout] 131 |                         let mut result:i8 = match set {
[INFO] [stdout]     |                             ----^^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count_solutions` is never read
[INFO] [stdout]   --> src/main.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let mut count_solutions:i32 = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/main.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |         Err(n) => {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/main.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |         Err(n) => {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/main.rs:104:17
[INFO] [stdout]     |
[INFO] [stdout] 104 |             Err(n) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/main.rs:146:32
[INFO] [stdout]     |
[INFO] [stdout] 146 | ...                   Ok(t) => {}
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/main.rs:155:24
[INFO] [stdout]     |
[INFO] [stdout] 155 |                     Ok(t) => {println!();
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut size_h:i8;
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut size_v:i8;
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:131:29
[INFO] [stdout]     |
[INFO] [stdout] 131 |                         let mut result:i8 = match set {
[INFO] [stdout]     |                             ----^^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.68s
[INFO] running `Command { std: "docker" "inspect" "fd0c5f61c06ffb580207e8159bb3467b0fbac5b57542e8d335fd14e7bc9d195f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fd0c5f61c06ffb580207e8159bb3467b0fbac5b57542e8d335fd14e7bc9d195f", kill_on_drop: false }`
[INFO] [stdout] fd0c5f61c06ffb580207e8159bb3467b0fbac5b57542e8d335fd14e7bc9d195f
[INFO] checking kmakeev/puzzle15rust against try#7622c0f807a4e13c4db886a1681bf343795692df+rustflags=-Dnon_local_definitions for pr-120393-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkmakeev%2Fpuzzle15rust" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kmakeev/puzzle15rust on toolchain 7622c0f807a4e13c4db886a1681bf343795692df
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7622c0f807a4e13c4db886a1681bf343795692df" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/kmakeev/puzzle15rust
[INFO] finished tweaking git repo https://github.com/kmakeev/puzzle15rust
[INFO] tweaked toml for git repo https://github.com/kmakeev/puzzle15rust written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/kmakeev/puzzle15rust 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" "+7622c0f807a4e13c4db886a1681bf343795692df" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7622c0f807a4e13c4db886a1681bf343795692df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fdde6f9768786bf02361e3c6827263a37c06e6f619f8b79fe561c98d3fd936f9
[INFO] running `Command { std: "docker" "start" "-a" "fdde6f9768786bf02361e3c6827263a37c06e6f619f8b79fe561c98d3fd936f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fdde6f9768786bf02361e3c6827263a37c06e6f619f8b79fe561c98d3fd936f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fdde6f9768786bf02361e3c6827263a37c06e6f619f8b79fe561c98d3fd936f9", kill_on_drop: false }`
[INFO] [stdout] fdde6f9768786bf02361e3c6827263a37c06e6f619f8b79fe561c98d3fd936f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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 -Dnon_local_definitions" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+7622c0f807a4e13c4db886a1681bf343795692df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5d0dc307cd002145cf304fbf54a4a48b29ce790253a05b94f8512aa117706030
[INFO] running `Command { std: "docker" "start" "-a" "5d0dc307cd002145cf304fbf54a4a48b29ce790253a05b94f8512aa117706030", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling arrayvec v0.4.11
[INFO] [stderr]    Compiling proc-macro2 v1.0.4
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking nodrop v0.1.13
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling serde v1.0.101
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]    Compiling rayon-core v1.5.0
[INFO] [stderr]    Compiling syn v1.0.5
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking either v1.5.2
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking regex-automata v0.1.8
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking csv-core v0.1.6
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking rayon v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.101
[INFO] [stderr]     Checking bstr v0.2.8
[INFO] [stderr]     Checking csv v1.1.1
[INFO] [stderr]     Checking puzzle v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]  --> src/puzzle.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::time;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/puzzle.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::time`
[INFO] [stdout]  --> src/puzzle.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::time;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::sync::Arc`
[INFO] [stdout]  --> src/puzzle.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::sync::Arc;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/puzzle.rs:355:25
[INFO] [stdout]     |
[INFO] [stdout] 355 |                     tmp[(pos as usize)] = -1;
[INFO] [stdout]     |                         ^            ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 355 -                     tmp[(pos as usize)] = -1;
[INFO] [stdout] 355 +                     tmp[pos as usize] = -1;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/puzzle.rs:355:25
[INFO] [stdout]     |
[INFO] [stdout] 355 |                     tmp[(pos as usize)] = -1;
[INFO] [stdout]     |                         ^            ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 355 -                     tmp[(pos as usize)] = -1;
[INFO] [stdout] 355 +                     tmp[pos as usize] = -1;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/puzzle.rs:366:25
[INFO] [stdout]     |
[INFO] [stdout] 366 |                     tmp[(pos as usize)] = -1;
[INFO] [stdout]     |                         ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 366 -                     tmp[(pos as usize)] = -1;
[INFO] [stdout] 366 +                     tmp[pos as usize] = -1;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/puzzle.rs:366:25
[INFO] [stdout]     |
[INFO] [stdout] 366 |                     tmp[(pos as usize)] = -1;
[INFO] [stdout]     |                         ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 366 -                     tmp[(pos as usize)] = -1;
[INFO] [stdout] 366 +                     tmp[pos as usize] = -1;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/puzzle.rs:377:25
[INFO] [stdout]     |
[INFO] [stdout] 377 |                     tmp[(pos as usize)] = -1;
[INFO] [stdout]     |                         ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 377 -                     tmp[(pos as usize)] = -1;
[INFO] [stdout] 377 +                     tmp[pos as usize] = -1;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/puzzle.rs:377:25
[INFO] [stdout]     |
[INFO] [stdout] 377 |                     tmp[(pos as usize)] = -1;
[INFO] [stdout]     |                         ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 377 -                     tmp[(pos as usize)] = -1;
[INFO] [stdout] 377 +                     tmp[pos as usize] = -1;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/puzzle.rs:388:25
[INFO] [stdout]     |
[INFO] [stdout] 388 |                     tmp[(pos as usize)] = -1;
[INFO] [stdout]     |                         ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 388 -                     tmp[(pos as usize)] = -1;
[INFO] [stdout] 388 +                     tmp[pos as usize] = -1;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/puzzle.rs:388:25
[INFO] [stdout]     |
[INFO] [stdout] 388 |                     tmp[(pos as usize)] = -1;
[INFO] [stdout]     |                         ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 388 -                     tmp[(pos as usize)] = -1;
[INFO] [stdout] 388 +                     tmp[pos as usize] = -1;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:147:21
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 let mut pos = pos_opt.unwrap() as i8;
[INFO] [stdout]     |                     ----^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `val` is never read
[INFO] [stdout]    --> src/puzzle.rs:194:17
[INFO] [stdout]     |
[INFO] [stdout] 194 |         let mut val = vec![];
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/puzzle.rs:196:19
[INFO] [stdout]     |
[INFO] [stdout] 196 |         let (key, value) = best.unwrap();
[INFO] [stdout]     |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/puzzle.rs:193:61
[INFO] [stdout]     |
[INFO] [stdout] 193 |     fn get_best_step(& self, map: & HashMap<Vec<i8>, Step>, f: u32) -> Vec<i8> {
[INFO] [stdout]     |                                                             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k1`
[INFO] [stdout]    --> src/puzzle.rs:195:44
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let best = map.par_iter().min_by(|(k1, s1),(k2,s2)| (s1.set.f.cmp(&s2.set.f)));
[INFO] [stdout]     |                                            ^^ help: if this is intentional, prefix it with an underscore: `_k1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k2`
[INFO] [stdout]    --> src/puzzle.rs:195:53
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let best = map.par_iter().min_by(|(k1, s1),(k2,s2)| (s1.set.f.cmp(&s2.set.f)));
[INFO] [stdout]     |                                                     ^^ help: if this is intentional, prefix it with an underscore: `_k2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `val` is never read
[INFO] [stdout]    --> src/puzzle.rs:202:17
[INFO] [stdout]     |
[INFO] [stdout] 202 |         let mut val = vec![];
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/puzzle.rs:204:19
[INFO] [stdout]     |
[INFO] [stdout] 204 |         let (key, value) = result.unwrap();
[INFO] [stdout]     |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k1`
[INFO] [stdout]    --> src/puzzle.rs:203:50
[INFO] [stdout]     |
[INFO] [stdout] 203 |         let result = map.par_iter().find_first(|(k1, s1)| (s1.hash_current == hash));
[INFO] [stdout]     |                                                  ^^ help: if this is intentional, prefix it with an underscore: `_k1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h`
[INFO] [stdout]    --> src/puzzle.rs:210:13
[INFO] [stdout]     |
[INFO] [stdout] 210 |         let h:i8 = self.size_h;
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_h`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/puzzle.rs:211:13
[INFO] [stdout]     |
[INFO] [stdout] 211 |         let v:i8 = self.size_v;
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cost`
[INFO] [stdout]    --> src/puzzle.rs:218:14
[INFO] [stdout]     |
[INFO] [stdout] 218 |         let (cost, h) = self.cost(self.start.clone());
[INFO] [stdout]     |              ^^^^ help: if this is intentional, prefix it with an underscore: `_cost`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]    --> src/puzzle.rs:245:26
[INFO] [stdout]     |
[INFO] [stdout] 245 |                     Some(result) => {continue},
[INFO] [stdout]     |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:224:17
[INFO] [stdout]     |
[INFO] [stdout] 224 |             let mut now = SystemTime::now();
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:229:17
[INFO] [stdout]     |
[INFO] [stdout] 229 |             let mut val = self.get_best_step(&h_open_sets, f);
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:236:25
[INFO] [stdout]     |
[INFO] [stdout] 236 |                     let mut val = self.get_by_hash(&mut h_close_sets, prev.hash_prev);
[INFO] [stdout]     |                         ----^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tmp` is never read
[INFO] [stdout]    --> src/puzzle.rs:286:21
[INFO] [stdout]     |
[INFO] [stdout] 286 |             let mut tmp: Vec<i8> = vec![];
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tmp` is never read
[INFO] [stdout]    --> src/puzzle.rs:335:21
[INFO] [stdout]     |
[INFO] [stdout] 335 |             let mut tmp: Vec<i8> = vec![];
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:448:25
[INFO] [stdout]     |
[INFO] [stdout] 448 |                     let mut v: i8 = (((*j-1) / self.size_v) - (c as i8 / self.size_v)).abs();
[INFO] [stdout]     |                         ----^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:449:25
[INFO] [stdout]     |
[INFO] [stdout] 449 |                     let mut h: i8 = (((*j-1) % self.size_h) - (c as i8 % self.size_h)).abs();
[INFO] [stdout]     |                         ----^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:470:21
[INFO] [stdout]     |
[INFO] [stdout] 470 |                 let mut position1: i8;
[INFO] [stdout]     |                     ----^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:471:21
[INFO] [stdout]     |
[INFO] [stdout] 471 |                 let mut position2: i8;
[INFO] [stdout]     |                     ----^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:147:21
[INFO] [stdout]     |
[INFO] [stdout] 147 |                 let mut pos = pos_opt.unwrap() as i8;
[INFO] [stdout]     |                     ----^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `val` is never read
[INFO] [stdout]    --> src/puzzle.rs:194:17
[INFO] [stdout]     |
[INFO] [stdout] 194 |         let mut val = vec![];
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/puzzle.rs:196:19
[INFO] [stdout]     |
[INFO] [stdout] 196 |         let (key, value) = best.unwrap();
[INFO] [stdout]     |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `f`
[INFO] [stdout]    --> src/puzzle.rs:193:61
[INFO] [stdout]     |
[INFO] [stdout] 193 |     fn get_best_step(& self, map: & HashMap<Vec<i8>, Step>, f: u32) -> Vec<i8> {
[INFO] [stdout]     |                                                             ^ help: if this is intentional, prefix it with an underscore: `_f`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k1`
[INFO] [stdout]    --> src/puzzle.rs:195:44
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let best = map.par_iter().min_by(|(k1, s1),(k2,s2)| (s1.set.f.cmp(&s2.set.f)));
[INFO] [stdout]     |                                            ^^ help: if this is intentional, prefix it with an underscore: `_k1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k2`
[INFO] [stdout]    --> src/puzzle.rs:195:53
[INFO] [stdout]     |
[INFO] [stdout] 195 |         let best = map.par_iter().min_by(|(k1, s1),(k2,s2)| (s1.set.f.cmp(&s2.set.f)));
[INFO] [stdout]     |                                                     ^^ help: if this is intentional, prefix it with an underscore: `_k2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `val` is never read
[INFO] [stdout]    --> src/puzzle.rs:202:17
[INFO] [stdout]     |
[INFO] [stdout] 202 |         let mut val = vec![];
[INFO] [stdout]     |                 ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/puzzle.rs:204:19
[INFO] [stdout]     |
[INFO] [stdout] 204 |         let (key, value) = result.unwrap();
[INFO] [stdout]     |                   ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `k1`
[INFO] [stdout]    --> src/puzzle.rs:203:50
[INFO] [stdout]     |
[INFO] [stdout] 203 |         let result = map.par_iter().find_first(|(k1, s1)| (s1.hash_current == hash));
[INFO] [stdout]     |                                                  ^^ help: if this is intentional, prefix it with an underscore: `_k1`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h`
[INFO] [stdout]    --> src/puzzle.rs:210:13
[INFO] [stdout]     |
[INFO] [stdout] 210 |         let h:i8 = self.size_h;
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_h`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]    --> src/puzzle.rs:211:13
[INFO] [stdout]     |
[INFO] [stdout] 211 |         let v:i8 = self.size_v;
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cost`
[INFO] [stdout]    --> src/puzzle.rs:218:14
[INFO] [stdout]     |
[INFO] [stdout] 218 |         let (cost, h) = self.cost(self.start.clone());
[INFO] [stdout]     |              ^^^^ help: if this is intentional, prefix it with an underscore: `_cost`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `result`
[INFO] [stdout]    --> src/puzzle.rs:245:26
[INFO] [stdout]     |
[INFO] [stdout] 245 |                     Some(result) => {continue},
[INFO] [stdout]     |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_result`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:224:17
[INFO] [stdout]     |
[INFO] [stdout] 224 |             let mut now = SystemTime::now();
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:229:17
[INFO] [stdout]     |
[INFO] [stdout] 229 |             let mut val = self.get_best_step(&h_open_sets, f);
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:236:25
[INFO] [stdout]     |
[INFO] [stdout] 236 |                     let mut val = self.get_by_hash(&mut h_close_sets, prev.hash_prev);
[INFO] [stdout]     |                         ----^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tmp` is never read
[INFO] [stdout]    --> src/puzzle.rs:286:21
[INFO] [stdout]     |
[INFO] [stdout] 286 |             let mut tmp: Vec<i8> = vec![];
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `tmp` is never read
[INFO] [stdout]    --> src/puzzle.rs:335:21
[INFO] [stdout]     |
[INFO] [stdout] 335 |             let mut tmp: Vec<i8> = vec![];
[INFO] [stdout]     |                     ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = help: maybe it is overwritten before being read?
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:448:25
[INFO] [stdout]     |
[INFO] [stdout] 448 |                     let mut v: i8 = (((*j-1) / self.size_v) - (c as i8 / self.size_v)).abs();
[INFO] [stdout]     |                         ----^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:449:25
[INFO] [stdout]     |
[INFO] [stdout] 449 |                     let mut h: i8 = (((*j-1) % self.size_h) - (c as i8 % self.size_h)).abs();
[INFO] [stdout]     |                         ----^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:470:21
[INFO] [stdout]     |
[INFO] [stdout] 470 |                 let mut position1: i8;
[INFO] [stdout]     |                     ----^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/puzzle.rs:471:21
[INFO] [stdout]     |
[INFO] [stdout] 471 |                 let mut position2: i8;
[INFO] [stdout]     |                     ----^^^^^^^^^
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 28 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count_solutions` is never read
[INFO] [stdout]   --> src/main.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let mut count_solutions:i32 = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/main.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |         Err(n) => {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/main.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |         Err(n) => {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/main.rs:104:17
[INFO] [stdout]     |
[INFO] [stdout] 104 |             Err(n) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/main.rs:146:32
[INFO] [stdout]     |
[INFO] [stdout] 146 | ...                   Ok(t) => {}
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/main.rs:155:24
[INFO] [stdout]     |
[INFO] [stdout] 155 |                     Ok(t) => {println!();
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut size_h:i8;
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut size_v:i8;
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:131:29
[INFO] [stdout]     |
[INFO] [stdout] 131 |                         let mut result:i8 = match set {
[INFO] [stdout]     |                             ----^^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-local `impl` definition, they should be avoided as they go against expectation
[INFO] [stdout]   --> src/main.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[derive(Serialize)]
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: move this `impl` block outside the of the current constant `_IMPL_SERIALIZE_FOR_Row`
[INFO] [stdout]    = note: an `impl` definition is non-local if it is nested inside an item and neither the type nor the trait are at the same nesting level as the `impl` block
[INFO] [stdout]    = note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <https://github.com/rust-lang/rust/issues/120363>
[INFO] [stdout]    = note: requested on the command line with `-D non-local-definitions`
[INFO] [stdout]    = note: this error originates in the derive macro `Serialize` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `count_solutions` is never read
[INFO] [stdout]   --> src/main.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |     let mut count_solutions:i32 = 0;
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: maybe it is overwritten before being read?
[INFO] [stdout]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/main.rs:49:13
[INFO] [stdout]    |
[INFO] [stdout] 49 |         Err(n) => {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]   --> src/main.rs:59:13
[INFO] [stdout]    |
[INFO] [stdout] 59 |         Err(n) => {
[INFO] [stdout]    |             ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `n`
[INFO] [stdout]    --> src/main.rs:104:17
[INFO] [stdout]     |
[INFO] [stdout] 104 |             Err(n) => {
[INFO] [stdout]     |                 ^ help: if this is intentional, prefix it with an underscore: `_n`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/main.rs:146:32
[INFO] [stdout]     |
[INFO] [stdout] 146 | ...                   Ok(t) => {}
[INFO] [stdout]     |                          ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> src/main.rs:155:24
[INFO] [stdout]     |
[INFO] [stdout] 155 |                     Ok(t) => {println!();
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `puzzle` (bin "puzzle" test) due to 2 previous errors; 9 warnings emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:40:9
[INFO] [stdout]    |
[INFO] [stdout] 40 |     let mut size_h:i8;
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |     let mut size_v:i8;
[INFO] [stdout]    |         ----^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:131:29
[INFO] [stdout]     |
[INFO] [stdout] 131 |                         let mut result:i8 = match set {
[INFO] [stdout]     |                             ----^^^^^^
[INFO] [stdout]     |                             |
[INFO] [stdout]     |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: non-local `impl` definition, they should be avoided as they go against expectation
[INFO] [stdout]   --> src/main.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 | #[derive(Serialize)]
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = help: move this `impl` block outside the of the current constant `_IMPL_SERIALIZE_FOR_Row`
[INFO] [stdout]    = note: an `impl` definition is non-local if it is nested inside an item and neither the type nor the trait are at the same nesting level as the `impl` block
[INFO] [stdout]    = note: this lint may become deny-by-default in the edition 2024 and higher, see the tracking issue <https://github.com/rust-lang/rust/issues/120363>
[INFO] [stdout]    = note: requested on the command line with `-D non-local-definitions`
[INFO] [stdout]    = note: this error originates in the derive macro `Serialize` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error; 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `puzzle` (bin "puzzle") due to 2 previous errors; 9 warnings emitted
[INFO] running `Command { std: "docker" "inspect" "5d0dc307cd002145cf304fbf54a4a48b29ce790253a05b94f8512aa117706030", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d0dc307cd002145cf304fbf54a4a48b29ce790253a05b94f8512aa117706030", kill_on_drop: false }`
[INFO] [stdout] 5d0dc307cd002145cf304fbf54a4a48b29ce790253a05b94f8512aa117706030