[INFO] fetching crate latin_squares 0.1.2...
[INFO] testing latin_squares-0.1.2 against master#c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38 for pr-146098-7
[INFO] extracting crate latin_squares 0.1.2 into /workspace/builds/worker-1-tc1/source
[INFO] started tweaking crates.io crate latin_squares 0.1.2
[INFO] finished tweaking crates.io crate latin_squares 0.1.2
[INFO] tweaked toml for crates.io crate latin_squares 0.1.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate latin_squares 0.1.2 on toolchain c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]      Locking 6 packages to latest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded moon_stats v0.1.2
[INFO] [stderr]   Downloaded moon_math v0.1.3
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4facccf1365a1780168803100ec9539b69ead3a7d0241cf6fa016c46a1a3aefe
[INFO] running `Command { std: "docker" "start" "-a" "4facccf1365a1780168803100ec9539b69ead3a7d0241cf6fa016c46a1a3aefe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4facccf1365a1780168803100ec9539b69ead3a7d0241cf6fa016c46a1a3aefe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4facccf1365a1780168803100ec9539b69ead3a7d0241cf6fa016c46a1a3aefe", kill_on_drop: false }`
[INFO] [stdout] 4facccf1365a1780168803100ec9539b69ead3a7d0241cf6fa016c46a1a3aefe
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ea2d4adca0c0eaa3be64df69eb7268021f50a4d3a77ec6dbbe4411943521de6
[INFO] running `Command { std: "docker" "start" "-a" "1ea2d4adca0c0eaa3be64df69eb7268021f50a4d3a77ec6dbbe4411943521de6", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.2.16
[INFO] [stderr]    Compiling moon_stats v0.1.2
[INFO] [stderr]    Compiling moon_math v0.1.3
[INFO] [stderr]    Compiling latin_squares v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::tui::print_2d_vec`
[INFO] [stdout]   --> src/lib.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | use crate::tui::print_2d_vec;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/lib.rs:191:10
[INFO] [stdout]     |
[INFO] [stdout] 191 |                 |&t| (count_cell_possibilities(working_square[row_start + t.0][col_start + t.1]) > 0)
[INFO] [stdout]     |                      ^                                                                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 191 -                 |&t| (count_cell_possibilities(working_square[row_start + t.0][col_start + t.1]) > 0)
[INFO] [stdout] 191 +                 |&t| count_cell_possibilities(working_square[row_start + t.0][col_start + t.1]) > 0
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.83s
[INFO] running `Command { std: "docker" "inspect" "1ea2d4adca0c0eaa3be64df69eb7268021f50a4d3a77ec6dbbe4411943521de6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ea2d4adca0c0eaa3be64df69eb7268021f50a4d3a77ec6dbbe4411943521de6", kill_on_drop: false }`
[INFO] [stdout] 1ea2d4adca0c0eaa3be64df69eb7268021f50a4d3a77ec6dbbe4411943521de6
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9124622a41f22f92e3a53cea2aae39776230e642b5f704bb5cade55931aba682
[INFO] running `Command { std: "docker" "start" "-a" "9124622a41f22f92e3a53cea2aae39776230e642b5f704bb5cade55931aba682", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `crate::tui::print_2d_vec`
[INFO] [stdout]   --> src/lib.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | use crate::tui::print_2d_vec;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/lib.rs:191:10
[INFO] [stdout]     |
[INFO] [stdout] 191 |                 |&t| (count_cell_possibilities(working_square[row_start + t.0][col_start + t.1]) > 0)
[INFO] [stdout]     |                      ^                                                                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 191 -                 |&t| (count_cell_possibilities(working_square[row_start + t.0][col_start + t.1]) > 0)
[INFO] [stdout] 191 +                 |&t| count_cell_possibilities(working_square[row_start + t.0][col_start + t.1]) > 0
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling latin_squares v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::tui::print_2d_vec`
[INFO] [stdout]   --> src/lib.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 | use crate::tui::print_2d_vec;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around closure body
[INFO] [stdout]    --> src/lib.rs:191:10
[INFO] [stdout]     |
[INFO] [stdout] 191 |                 |&t| (count_cell_possibilities(working_square[row_start + t.0][col_start + t.1]) > 0)
[INFO] [stdout]     |                      ^                                                                              ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 191 -                 |&t| (count_cell_possibilities(working_square[row_start + t.0][col_start + t.1]) > 0)
[INFO] [stdout] 191 +                 |&t| count_cell_possibilities(working_square[row_start + t.0][col_start + t.1]) > 0
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "9124622a41f22f92e3a53cea2aae39776230e642b5f704bb5cade55931aba682", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9124622a41f22f92e3a53cea2aae39776230e642b5f704bb5cade55931aba682", kill_on_drop: false }`
[INFO] [stdout] 9124622a41f22f92e3a53cea2aae39776230e642b5f704bb5cade55931aba682
[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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+c90bcb9571b7aab0d8beaa2ce8a998ffaf079d38" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 351fbb30ab214347972caa5d2fe7d17d9830ab1ea1e2a737cef5306e4cdbd535
[INFO] running `Command { std: "docker" "start" "-a" "351fbb30ab214347972caa5d2fe7d17d9830ab1ea1e2a737cef5306e4cdbd535", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `crate::tui::print_2d_vec`
[INFO] [stderr]   --> src/lib.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 | use crate::tui::print_2d_vec;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stderr]    --> src/lib.rs:191:10
[INFO] [stderr]     |
[INFO] [stderr] 191 |                 |&t| (count_cell_possibilities(working_square[row_start + t.0][col_start + t.1]) > 0)
[INFO] [stderr]     |                      ^                                                                              ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 191 -                 |&t| (count_cell_possibilities(working_square[row_start + t.0][col_start + t.1]) > 0)
[INFO] [stderr] 191 +                 |&t| count_cell_possibilities(working_square[row_start + t.0][col_start + t.1]) > 0
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: `latin_squares` (lib) generated 2 warnings (run `cargo fix --lib -p latin_squares` to apply 2 suggestions)
[INFO] [stderr] warning: `latin_squares` (lib test) generated 2 warnings (2 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/latin_squares-5db042ba39288f50)
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test tests::test_latin_placer ... ok
[INFO] [stdout] test tests::test_prob_collapse ... ok
[INFO] [stdout] test tests::test_latin_solver ... ok
[INFO] [stdout] test tests::oversize_square - should panic ... ok
[INFO] [stdout] test tests::test_sudoku_single_answer_generation ... ok
[INFO] [stdout] test tests::test_latin_culler ... ok
[INFO] [stdout] test tests::generation_distribution_statistics ... ok
[INFO] [stdout] test tests::get_samples ... ok
[INFO] [stdout] test tests::test_sudoku_solver ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 4.99s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests latin_squares
[INFO] [stderr] warning: unnecessary parentheses around closure body
[INFO] [stderr]    --> src/lib.rs:191:10
[INFO] [stderr]     |
[INFO] [stderr] 191 |                 |&t| (count_cell_possibilities(working_square[row_start + t.0][col_start + t.1]) > 0)
[INFO] [stderr]     |                      ^                                                                              ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 191 -                 |&t| (count_cell_possibilities(working_square[row_start + t.0][col_start + t.1]) > 0)
[INFO] [stderr] 191 +                 |&t| count_cell_possibilities(working_square[row_start + t.0][col_start + t.1]) > 0
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "351fbb30ab214347972caa5d2fe7d17d9830ab1ea1e2a737cef5306e4cdbd535", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "351fbb30ab214347972caa5d2fe7d17d9830ab1ea1e2a737cef5306e4cdbd535", kill_on_drop: false }`
[INFO] [stdout] 351fbb30ab214347972caa5d2fe7d17d9830ab1ea1e2a737cef5306e4cdbd535