[INFO] cloning repository https://github.com/danielliwd/suduku_resolve_rs [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/danielliwd/suduku_resolve_rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielliwd%2Fsuduku_resolve_rs", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielliwd%2Fsuduku_resolve_rs'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 1a6852911d9a0bd6e28c50191e105ba4c4d891d1 [INFO] checking danielliwd/suduku_resolve_rs/1a6852911d9a0bd6e28c50191e105ba4c4d891d1 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdanielliwd%2Fsuduku_resolve_rs" "/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/danielliwd/suduku_resolve_rs on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/danielliwd/suduku_resolve_rs [INFO] finished tweaking git repo https://github.com/danielliwd/suduku_resolve_rs [INFO] tweaked toml for git repo https://github.com/danielliwd/suduku_resolve_rs written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/danielliwd/suduku_resolve_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" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded bitmaps v3.2.1 [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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 7b6322d22e18bed4fe309df9d1c66a9af3b040a149d12525306b3bf0de4ed6c1 [INFO] running `Command { std: "docker" "start" "-a" "7b6322d22e18bed4fe309df9d1c66a9af3b040a149d12525306b3bf0de4ed6c1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7b6322d22e18bed4fe309df9d1c66a9af3b040a149d12525306b3bf0de4ed6c1", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7b6322d22e18bed4fe309df9d1c66a9af3b040a149d12525306b3bf0de4ed6c1", kill_on_drop: false }` [INFO] [stdout] 7b6322d22e18bed4fe309df9d1c66a9af3b040a149d12525306b3bf0de4ed6c1 [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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 608c5bf90d9cfc993276905207af1d502e483ffa92f4947d1a17cff62ce44650 [INFO] running `Command { std: "docker" "start" "-a" "608c5bf90d9cfc993276905207af1d502e483ffa92f4947d1a17cff62ce44650", kill_on_drop: false }` [INFO] [stderr] Checking memchr v2.7.2 [INFO] [stderr] Checking regex-syntax v0.8.3 [INFO] [stderr] Checking utf8parse v0.2.1 [INFO] [stderr] Checking is_terminal_polyfill v1.70.0 [INFO] [stderr] Checking log v0.4.21 [INFO] [stderr] Checking anstyle-query v1.0.3 [INFO] [stderr] Checking anstyle v1.0.7 [INFO] [stderr] Checking colorchoice v1.0.1 [INFO] [stderr] Compiling anyhow v1.0.86 [INFO] [stderr] Checking humantime v2.1.0 [INFO] [stderr] Checking dotenvy v0.15.7 [INFO] [stderr] Checking bitmaps v3.2.1 [INFO] [stderr] Checking anstyle-parse v0.2.4 [INFO] [stderr] Checking anstream v0.6.14 [INFO] [stderr] Checking aho-corasick v1.1.3 [INFO] [stderr] Checking regex-automata v0.4.6 [INFO] [stderr] Checking regex v1.10.4 [INFO] [stderr] Checking env_filter v0.1.0 [INFO] [stderr] Checking env_logger v0.11.3 [INFO] [stderr] Checking sudoku_resolve v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `BufReader` [INFO] [stdout] --> src/lib.rs:7:33 [INFO] [stdout] | [INFO] [stdout] 7 | use std::io::{BufWriter, Write, BufReader, Read}; [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::cmp::Reverse` [INFO] [stdout] --> src/lib.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use std::cmp::Reverse; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `std::cmp::Reverse` [INFO] [stdout] --> src/lib.rs:8:5 [INFO] [stdout] | [INFO] [stdout] 8 | use std::cmp::Reverse; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Read` [INFO] [stdout] --> src/lib.rs:7:44 [INFO] [stdout] | [INFO] [stdout] 7 | use std::io::{BufWriter, Write, BufReader, Read}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `Read` [INFO] [stdout] --> src/lib.rs:7:44 [INFO] [stdout] | [INFO] [stdout] 7 | use std::io::{BufWriter, Write, BufReader, Read}; [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:353:17 [INFO] [stdout] | [INFO] [stdout] 353 | let mut tpl = Bitmap::<10>::mask(1); [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/lib.rs:416:17 [INFO] [stdout] | [INFO] [stdout] 416 | let mut cans = &mut self.candidates[cell.0][cell.1]; [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/lib.rs:353:17 [INFO] [stdout] | [INFO] [stdout] 353 | let mut tpl = Bitmap::<10>::mask(1); [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/lib.rs:416:17 [INFO] [stdout] | [INFO] [stdout] 416 | let mut cans = &mut self.candidates[cell.0][cell.1]; [INFO] [stdout] | ----^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:306:17 [INFO] [stdout] | [INFO] [stdout] 306 | backup.fill(cell, num); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 306 | let _ = backup.fill(cell, num); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:308:21 [INFO] [stdout] | [INFO] [stdout] 308 | mem::replace(self, backup); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 308 | let _ = mem::replace(self, backup); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:321:9 [INFO] [stdout] | [INFO] [stdout] 321 | self.init_state(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 321 | let _ = self.init_state(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/lib.rs:688:13 [INFO] [stdout] | [INFO] [stdout] 688 | let mut sudoku = Sudoku::load(reader).unwrap(); [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/lib.rs:711:13 [INFO] [stdout] | [INFO] [stdout] 711 | let mut sudoku = Sudoku::load(reader).unwrap(); [INFO] [stdout] | ----^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `col` [INFO] [stdout] --> src/lib.rs:749:21 [INFO] [stdout] | [INFO] [stdout] 749 | let col = lt.1 + c_off; [INFO] [stdout] | ^^^ help: if this is intentional, prefix it with an underscore: `_col` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 8 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:306:17 [INFO] [stdout] | [INFO] [stdout] 306 | backup.fill(cell, num); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 306 | let _ = backup.fill(cell, num); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used [INFO] [stdout] --> src/lib.rs:308:21 [INFO] [stdout] | [INFO] [stdout] 308 | mem::replace(self, backup); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: if you don't need the old value, you can just assign the new value directly [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 308 | let _ = mem::replace(self, backup); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:321:9 [INFO] [stdout] | [INFO] [stdout] 321 | self.init_state(); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 321 | let _ = self.init_state(); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:721:9 [INFO] [stdout] | [INFO] [stdout] 721 | state.fill((1,1), 3); // same row [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 721 | let _ = state.fill((1,1), 3); // same row [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:722:9 [INFO] [stdout] | [INFO] [stdout] 722 | state.fill((1,2), 4); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 722 | let _ = state.fill((1,2), 4); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:723:9 [INFO] [stdout] | [INFO] [stdout] 723 | state.fill((1,3), 5); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 723 | let _ = state.fill((1,3), 5); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:724:9 [INFO] [stdout] | [INFO] [stdout] 724 | state.fill((3,5), 7); // same column [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 724 | let _ = state.fill((3,5), 7); // same column [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:725:9 [INFO] [stdout] | [INFO] [stdout] 725 | state.fill((4,5), 8); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 725 | let _ = state.fill((4,5), 8); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:726:9 [INFO] [stdout] | [INFO] [stdout] 726 | state.fill((2,4), 9); // same grid [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 726 | let _ = state.fill((2,4), 9); // same grid [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/lib.rs:738:9 [INFO] [stdout] | [INFO] [stdout] 738 | state.fill(pos, num); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 738 | let _ = state.fill(pos, num); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 17 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.88s [INFO] running `Command { std: "docker" "inspect" "608c5bf90d9cfc993276905207af1d502e483ffa92f4947d1a17cff62ce44650", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "608c5bf90d9cfc993276905207af1d502e483ffa92f4947d1a17cff62ce44650", kill_on_drop: false }` [INFO] [stdout] 608c5bf90d9cfc993276905207af1d502e483ffa92f4947d1a17cff62ce44650