[INFO] cloning repository https://github.com/nkoppel/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/nkoppel/sudoku-solver" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnkoppel%2Fsudoku-solver", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnkoppel%2Fsudoku-solver'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 1b9ae501ef3bd0b1844f239d0c580d363eaff7d5
[INFO] checking nkoppel/sudoku-solver against beta for pr-78714
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnkoppel%2Fsudoku-solver" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nkoppel/sudoku-solver on toolchain beta
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nkoppel/sudoku-solver
[INFO] finished tweaking git repo https://github.com/nkoppel/sudoku-solver
[INFO] tweaked toml for git repo https://github.com/nkoppel/sudoku-solver written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/nkoppel/sudoku-solver already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9be5468d9676ece9300378bf6d119675f1d9b56c4cc1722044c1698ca6196949
[INFO] running `Command { std: "docker" "start" "-a" "9be5468d9676ece9300378bf6d119675f1d9b56c4cc1722044c1698ca6196949", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9be5468d9676ece9300378bf6d119675f1d9b56c4cc1722044c1698ca6196949", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9be5468d9676ece9300378bf6d119675f1d9b56c4cc1722044c1698ca6196949", kill_on_drop: false }`
[INFO] [stdout] 9be5468d9676ece9300378bf6d119675f1d9b56c4cc1722044c1698ca6196949
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:6eabd152ff4036248d66efda456a36cb33d24b7291b33f25f75140726c88da35" "/opt/rustwide/cargo-home/bin/cargo" "+beta" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] bea3188358e6274aba9fe1b90ba4bf2945696c90bcf1fe2aa0e40966e39a6707
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bea3188358e6274aba9fe1b90ba4bf2945696c90bcf1fe2aa0e40966e39a6707", kill_on_drop: false }`
[INFO] [stderr]     Checking sudoku-solver v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `sudoku2`
[INFO] [stdout]  --> benches/benches.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use sudoku2::*;
[INFO] [stdout]   |     ^^^^^^^ use of undeclared crate or module `sudoku2`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Puzzle`
[INFO] [stdout]   --> benches/benches.rs:12:18
[INFO] [stdout]    |
[INFO] [stdout] 12 |     let puzzle = Puzzle::from_str(TEST_PUZZLE);
[INFO] [stdout]    |                  ^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use sudoku_solver::Puzzle;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Puzzle`
[INFO] [stdout]   --> benches/benches.rs:19:15
[INFO] [stdout]    |
[INFO] [stdout] 19 |     b.iter(|| Puzzle::from_str(test::black_box(TEST_PUZZLE)));
[INFO] [stdout]    |               ^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use sudoku_solver::Puzzle;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Puzzle`
[INFO] [stdout]   --> benches/benches.rs:24:18
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let puzzle = Puzzle::from_str(TEST_PUZZLE);
[INFO] [stdout]    |                  ^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use sudoku_solver::Puzzle;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Solver`
[INFO] [stdout]   --> benches/benches.rs:25:22
[INFO] [stdout]    |
[INFO] [stdout] 25 |     let mut solver = Solver::new();
[INFO] [stdout]    |                      ^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use sudoku_solver::Solver;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Puzzle`
[INFO] [stdout]   --> benches/benches.rs:35:18
[INFO] [stdout]    |
[INFO] [stdout] 35 |     let puzzle = Puzzle::from_str(TEST_PUZZLE);
[INFO] [stdout]    |                  ^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use sudoku_solver::Puzzle;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Solver`
[INFO] [stdout]   --> benches/benches.rs:36:22
[INFO] [stdout]    |
[INFO] [stdout] 36 |     let mut solver = Solver::new();
[INFO] [stdout]    |                      ^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use sudoku_solver::Solver;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Puzzle`
[INFO] [stdout]   --> benches/benches.rs:43:18
[INFO] [stdout]    |
[INFO] [stdout] 43 |     let puzzle = Puzzle::from_str(TEST_PUZZLE);
[INFO] [stdout]    |                  ^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use sudoku_solver::Puzzle;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Solver`
[INFO] [stdout]   --> benches/benches.rs:44:22
[INFO] [stdout]    |
[INFO] [stdout] 44 |     let mut solver = Solver::new();
[INFO] [stdout]    |                      ^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use sudoku_solver::Solver;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Puzzle`
[INFO] [stdout]   --> benches/benches.rs:54:18
[INFO] [stdout]    |
[INFO] [stdout] 54 |     let puzzle = Puzzle::from_str(TEST_PUZZLE);
[INFO] [stdout]    |                  ^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use sudoku_solver::Puzzle;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: use of undeclared type `Solver`
[INFO] [stdout]   --> benches/benches.rs:55:22
[INFO] [stdout]    |
[INFO] [stdout] 55 |     let mut solver = Solver::new();
[INFO] [stdout]    |                      ^^^^^^ not found in this scope
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing this struct
[INFO] [stdout]    |
[INFO] [stdout] 3  | use sudoku_solver::Solver;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> benches/benches.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 12 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `sudoku-solver`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: function is never used: `print_board`
[INFO] [stdout]  --> src/puzzle.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn print_board(b: u128) {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `test`
[INFO] [stdout]    --> src/solve.rs:186:12
[INFO] [stdout]     |
[INFO] [stdout] 186 |     pub fn test(&mut self, puzzle: &str, solution: &str) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_from_lines`
[INFO] [stdout]   --> src/main.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn test_from_lines<T>(lines: Lines<T>)
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `print_board`
[INFO] [stdout]  --> src/puzzle.rs:1:8
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub fn print_board(b: u128) {
[INFO] [stdout]   |        ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `test`
[INFO] [stdout]    --> src/solve.rs:186:12
[INFO] [stdout]     |
[INFO] [stdout] 186 |     pub fn test(&mut self, puzzle: &str, solution: &str) {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_from_lines`
[INFO] [stdout]   --> src/main.rs:10:4
[INFO] [stdout]    |
[INFO] [stdout] 10 | fn test_from_lines<T>(lines: Lines<T>)
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "bea3188358e6274aba9fe1b90ba4bf2945696c90bcf1fe2aa0e40966e39a6707", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bea3188358e6274aba9fe1b90ba4bf2945696c90bcf1fe2aa0e40966e39a6707", kill_on_drop: false }`
[INFO] [stdout] bea3188358e6274aba9fe1b90ba4bf2945696c90bcf1fe2aa0e40966e39a6707