[INFO] cloning repository https://github.com/Nalleyer/SudokuSolver
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Nalleyer/SudokuSolver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNalleyer%2FSudokuSolver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNalleyer%2FSudokuSolver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 4d0677b09b28157087276910f7ddd483eb583bd2
[INFO] checking Nalleyer/SudokuSolver against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNalleyer%2FSudokuSolver" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Nalleyer/SudokuSolver
[INFO] finished tweaking git repo https://github.com/Nalleyer/SudokuSolver
[INFO] tweaked toml for git repo https://github.com/Nalleyer/SudokuSolver written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Nalleyer/SudokuSolver on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Nalleyer/SudokuSolver 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" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ec9c3e4afbdd71ac530bb5b43e1823942b0afd495cc6af505e8ad4018657e8a
[INFO] running `Command { std: "docker" "start" "-a" "1ec9c3e4afbdd71ac530bb5b43e1823942b0afd495cc6af505e8ad4018657e8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ec9c3e4afbdd71ac530bb5b43e1823942b0afd495cc6af505e8ad4018657e8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ec9c3e4afbdd71ac530bb5b43e1823942b0afd495cc6af505e8ad4018657e8a", kill_on_drop: false }`
[INFO] [stdout] 1ec9c3e4afbdd71ac530bb5b43e1823942b0afd495cc6af505e8ad4018657e8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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" "-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 67ae5d914ec92e0a7895315ec60a7e7475b579658a6c75d2dbbd35ec7832f03f
[INFO] running `Command { std: "docker" "start" "-a" "67ae5d914ec92e0a7895315ec60a7e7475b579658a6c75d2dbbd35ec7832f03f", kill_on_drop: false }`
[INFO] [stderr]     Checking sudoku_solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `View`
[INFO] [stdout]  --> src/solver.rs:1:36
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::sudoku::{Sudoku, Value, View};
[INFO] [stdout]   |                                    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/solver.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> src/solver.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `View`
[INFO] [stdout]  --> src/solver.rs:1:36
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::sudoku::{Sudoku, Value, View};
[INFO] [stdout]   |                                    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::collections::HashSet`
[INFO] [stdout]  --> src/solver.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::collections::HashSet;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> src/solver.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/sudoku.rs:167:20
[INFO] [stdout]     |
[INFO] [stdout] 167 |     pub fn get_row(&self, idx: usize) -> View {
[INFO] [stdout]     |                    ^^^^^                 ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 167 |     pub fn get_row(&self, idx: usize) -> View<'_> {
[INFO] [stdout]     |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/sudoku.rs:176:23
[INFO] [stdout]     |
[INFO] [stdout] 176 |     pub fn get_column(&self, idx: usize) -> View {
[INFO] [stdout]     |                       ^^^^^                 ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 176 |     pub fn get_column(&self, idx: usize) -> View<'_> {
[INFO] [stdout]     |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/sudoku.rs:187:21
[INFO] [stdout]     |
[INFO] [stdout] 187 |     pub fn get_area(&self, idx: usize) -> View {
[INFO] [stdout]     |                     ^^^^^                 ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 187 |     pub fn get_area(&self, idx: usize) -> View<'_> {
[INFO] [stdout]     |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Value`
[INFO] [stdout]  --> src/bin/main.rs:5:37
[INFO] [stdout]   |
[INFO] [stdout] 5 | use sudoku_solver::{Solver, Sudoku, Value};
[INFO] [stdout]   |                                     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/solver.rs:164:13
[INFO] [stdout]     |
[INFO] [stdout] 164 |         let mut sdk = Sudoku::new(&s_str).unwrap();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/solver.rs:165:13
[INFO] [stdout]     |
[INFO] [stdout] 165 |         let mut sdk2 = Sudoku::new(&s_str).unwrap();
[INFO] [stdout]     |             ----^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Value`
[INFO] [stdout]  --> src/bin/main.rs:5:37
[INFO] [stdout]   |
[INFO] [stdout] 5 | use sudoku_solver::{Solver, Sudoku, Value};
[INFO] [stdout]   |                                     ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/sudoku.rs:167:20
[INFO] [stdout]     |
[INFO] [stdout] 167 |     pub fn get_row(&self, idx: usize) -> View {
[INFO] [stdout]     |                    ^^^^^                 ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                    |
[INFO] [stdout]     |                    the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 167 |     pub fn get_row(&self, idx: usize) -> View<'_> {
[INFO] [stdout]     |                                              ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/sudoku.rs:176:23
[INFO] [stdout]     |
[INFO] [stdout] 176 |     pub fn get_column(&self, idx: usize) -> View {
[INFO] [stdout]     |                       ^^^^^                 ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                       |
[INFO] [stdout]     |                       the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 176 |     pub fn get_column(&self, idx: usize) -> View<'_> {
[INFO] [stdout]     |                                                 ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.46s
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/sudoku.rs:187:21
[INFO] [stdout]     |
[INFO] [stdout] 187 |     pub fn get_area(&self, idx: usize) -> View {
[INFO] [stdout]     |                     ^^^^^                 ^^^^ the same lifetime is hidden here
[INFO] [stdout]     |                     |
[INFO] [stdout]     |                     the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 187 |     pub fn get_area(&self, idx: usize) -> View<'_> {
[INFO] [stdout]     |                                               ++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "67ae5d914ec92e0a7895315ec60a7e7475b579658a6c75d2dbbd35ec7832f03f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "67ae5d914ec92e0a7895315ec60a7e7475b579658a6c75d2dbbd35ec7832f03f", kill_on_drop: false }`
[INFO] [stdout] 67ae5d914ec92e0a7895315ec60a7e7475b579658a6c75d2dbbd35ec7832f03f
