[INFO] cloning repository https://github.com/niceguynix/sudoku-solver [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/niceguynix/sudoku-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fniceguynix%2Fsudoku-solver", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fniceguynix%2Fsudoku-solver'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 110beb43ec81a19f5a9429174a7076f4fa4b99fc [INFO] checking niceguynix/sudoku-solver against master#40daf23eeb711dadf140b2536e67e3ff4c999196 for pr-142287 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fniceguynix%2Fsudoku-solver" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/niceguynix/sudoku-solver on toolchain 40daf23eeb711dadf140b2536e67e3ff4c999196 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/niceguynix/sudoku-solver [INFO] finished tweaking git repo https://github.com/niceguynix/sudoku-solver [INFO] tweaked toml for git repo https://github.com/niceguynix/sudoku-solver written to /workspace/builds/worker-1-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/niceguynix/sudoku-solver 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" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] f42aca8ea26b26602390d74b057146a3062c07b297eece26ce5a69613064efc9 [INFO] running `Command { std: "docker" "start" "-a" "f42aca8ea26b26602390d74b057146a3062c07b297eece26ce5a69613064efc9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "f42aca8ea26b26602390d74b057146a3062c07b297eece26ce5a69613064efc9", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "f42aca8ea26b26602390d74b057146a3062c07b297eece26ce5a69613064efc9", kill_on_drop: false }` [INFO] [stdout] f42aca8ea26b26602390d74b057146a3062c07b297eece26ce5a69613064efc9 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0e1e8347827d94ea5ab65fee055228e9c986abc9e4693db9a4fd32afd801a322 [INFO] running `Command { std: "docker" "start" "-a" "0e1e8347827d94ea5ab65fee055228e9c986abc9e4693db9a4fd32afd801a322", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.139 [INFO] [stderr] Checking cfg-if v1.0.0 [INFO] [stderr] Checking ppv-lite86 v0.2.17 [INFO] [stderr] Checking getrandom v0.2.8 [INFO] [stderr] Checking rand_core v0.6.4 [INFO] [stderr] Checking rand_chacha v0.3.1 [INFO] [stderr] Checking rand v0.8.5 [INFO] [stderr] Checking sudoku-solver v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `val` is never read [INFO] [stdout] --> src/wfc.rs:42:17 [INFO] [stdout] | [INFO] [stdout] 42 | let mut val = t.choose(&mut rand::thread_rng()).expect("No possible state"); [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: variable does not need to be mutable [INFO] [stdout] --> src/wfc.rs:85:13 [INFO] [stdout] | [INFO] [stdout] 85 | let mut pattern = [[[1;9];9];9]; [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/wfc.rs:86:13 [INFO] [stdout] | [INFO] [stdout] 86 | let mut board = [[0;9];9]; [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:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let mut board = match choice { [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `is_valid`, `chk_row`, `chk_col`, and `chk_sqr` are never used [INFO] [stdout] --> src/board.rs:9:8 [INFO] [stdout] | [INFO] [stdout] 8 | impl SBoard { [INFO] [stdout] | ----------- methods in this implementation [INFO] [stdout] 9 | fn is_valid(&self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 19 | fn chk_row(&self, row: usize) -> bool { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 31 | fn chk_col(&self, col: usize) -> bool { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 43 | fn chk_sqr(&self, grid: usize) -> bool { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `Wfc` should have a snake case name [INFO] [stdout] --> src/main.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | let mut Wfc = wfc::WFC::new(); [INFO] [stdout] | ^^^ help: convert the identifier to snake case (notice the capitalization): `wfc` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/board.rs:109:5 [INFO] [stdout] | [INFO] [stdout] 109 | std::io::stdin().read_line(&mut buf); [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] 109 | let _ = std::io::stdin().read_line(&mut buf); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `val` is never read [INFO] [stdout] --> src/wfc.rs:42:17 [INFO] [stdout] | [INFO] [stdout] 42 | let mut val = t.choose(&mut rand::thread_rng()).expect("No possible state"); [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: variable does not need to be mutable [INFO] [stdout] --> src/wfc.rs:85:13 [INFO] [stdout] | [INFO] [stdout] 85 | let mut pattern = [[[1;9];9];9]; [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/wfc.rs:86:13 [INFO] [stdout] | [INFO] [stdout] 86 | let mut board = [[0;9];9]; [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:12:9 [INFO] [stdout] | [INFO] [stdout] 12 | let mut board = match choice { [INFO] [stdout] | ----^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: methods `is_valid`, `chk_row`, `chk_col`, and `chk_sqr` are never used [INFO] [stdout] --> src/board.rs:9:8 [INFO] [stdout] | [INFO] [stdout] 8 | impl SBoard { [INFO] [stdout] | ----------- methods in this implementation [INFO] [stdout] 9 | fn is_valid(&self) -> bool { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 19 | fn chk_row(&self, row: usize) -> bool { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 31 | fn chk_col(&self, col: usize) -> bool { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 43 | fn chk_sqr(&self, grid: usize) -> bool { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable `Wfc` should have a snake case name [INFO] [stdout] --> src/main.rs:19:13 [INFO] [stdout] | [INFO] [stdout] 19 | let mut Wfc = wfc::WFC::new(); [INFO] [stdout] | ^^^ help: convert the identifier to snake case (notice the capitalization): `wfc` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/board.rs:109:5 [INFO] [stdout] | [INFO] [stdout] 109 | std::io::stdin().read_line(&mut buf); [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] 109 | let _ = std::io::stdin().read_line(&mut buf); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.99s [INFO] running `Command { std: "docker" "inspect" "0e1e8347827d94ea5ab65fee055228e9c986abc9e4693db9a4fd32afd801a322", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0e1e8347827d94ea5ab65fee055228e9c986abc9e4693db9a4fd32afd801a322", kill_on_drop: false }` [INFO] [stdout] 0e1e8347827d94ea5ab65fee055228e9c986abc9e4693db9a4fd32afd801a322