[INFO] cloning repository https://github.com/artran/rudoku [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/artran/rudoku" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartran%2Frudoku", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartran%2Frudoku'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 5c112775cdf80d3859ea4ce81dc1eb4c735473a5 [INFO] testing artran/rudoku against master#a77da2d454e6caa227a85b16410b95f93495e7e0 for pr-91031 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fartran%2Frudoku" "/workspace/builds/worker-4/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/artran/rudoku on toolchain a77da2d454e6caa227a85b16410b95f93495e7e0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/artran/rudoku [INFO] finished tweaking git repo https://github.com/artran/rudoku [INFO] tweaked toml for git repo https://github.com/artran/rudoku written to /workspace/builds/worker-4/source/Cargo.toml [INFO] crate git repo https://github.com/artran/rudoku already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] fd4c5d36b59e8876067c916f3a9b0e7a020188f67cca10099b83f98f113047be [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" "fd4c5d36b59e8876067c916f3a9b0e7a020188f67cca10099b83f98f113047be", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "fd4c5d36b59e8876067c916f3a9b0e7a020188f67cca10099b83f98f113047be", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "fd4c5d36b59e8876067c916f3a9b0e7a020188f67cca10099b83f98f113047be", kill_on_drop: false }` [INFO] [stdout] fd4c5d36b59e8876067c916f3a9b0e7a020188f67cca10099b83f98f113047be [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 2040757437edd5d62366d2a4caabca33985d1a12accbcf68a2ee1e1d1d95c273 [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" "2040757437edd5d62366d2a4caabca33985d1a12accbcf68a2ee1e1d1d95c273", kill_on_drop: false }` [INFO] [stderr] Compiling itertools v0.10.0 [INFO] [stderr] Compiling sudoku v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/board.rs:68:9 [INFO] [stdout] | [INFO] [stdout] 68 | &mut self.cols[col_idx - 1].remove(&value); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 68 | let _ = &mut self.cols[col_idx - 1].remove(&value); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/board.rs:69:9 [INFO] [stdout] | [INFO] [stdout] 69 | &mut self.rows[row_idx - 1].remove(&value); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 69 | let _ = &mut self.rows[row_idx - 1].remove(&value); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/board.rs:70:9 [INFO] [stdout] | [INFO] [stdout] 70 | &mut self.squares[(col_idx - 1) / 3 + 3 * ((row_idx - 1) / 3)].remove(&value); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 70 | let _ = &mut self.squares[(col_idx - 1) / 3 + 3 * ((row_idx - 1) / 3)].remove(&value); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 3.67s [INFO] running `Command { std: "docker" "inspect" "2040757437edd5d62366d2a4caabca33985d1a12accbcf68a2ee1e1d1d95c273", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "2040757437edd5d62366d2a4caabca33985d1a12accbcf68a2ee1e1d1d95c273", kill_on_drop: false }` [INFO] [stdout] 2040757437edd5d62366d2a4caabca33985d1a12accbcf68a2ee1e1d1d95c273 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 228434277bdaf8330ca858cf234d5bb58c17c08f7d29221bc07eb06ebcabea64 [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" "228434277bdaf8330ca858cf234d5bb58c17c08f7d29221bc07eb06ebcabea64", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.94 [INFO] [stderr] Compiling num-integer v0.1.44 [INFO] [stderr] Compiling num-iter v0.1.42 [INFO] [stderr] Compiling num-complex v0.1.43 [INFO] [stderr] Compiling rand v0.4.6 [INFO] [stderr] Compiling num-bigint v0.1.44 [INFO] [stderr] Compiling num-rational v0.1.42 [INFO] [stderr] Compiling num v0.1.42 [INFO] [stderr] Compiling spectral v0.6.0 [INFO] [stderr] Compiling sudoku v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/board.rs:68:9 [INFO] [stdout] | [INFO] [stdout] 68 | &mut self.cols[col_idx - 1].remove(&value); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 68 | let _ = &mut self.cols[col_idx - 1].remove(&value); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/board.rs:69:9 [INFO] [stdout] | [INFO] [stdout] 69 | &mut self.rows[row_idx - 1].remove(&value); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 69 | let _ = &mut self.rows[row_idx - 1].remove(&value); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused borrow that must be used [INFO] [stdout] --> src/board.rs:70:9 [INFO] [stdout] | [INFO] [stdout] 70 | &mut self.squares[(col_idx - 1) / 3 + 3 * ((row_idx - 1) / 3)].remove(&value); [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stdout] | [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 70 | let _ = &mut self.squares[(col_idx - 1) / 3 + 3 * ((row_idx - 1) / 3)].remove(&value); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 3 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 11.12s [INFO] running `Command { std: "docker" "inspect" "228434277bdaf8330ca858cf234d5bb58c17c08f7d29221bc07eb06ebcabea64", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "228434277bdaf8330ca858cf234d5bb58c17c08f7d29221bc07eb06ebcabea64", kill_on_drop: false }` [INFO] [stdout] 228434277bdaf8330ca858cf234d5bb58c17c08f7d29221bc07eb06ebcabea64 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+a77da2d454e6caa227a85b16410b95f93495e7e0" "test" "--frozen", 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] 364dff3f7067579e8a00b089d9b4e9ed3bc5c1babdcb0e96abb817c45f7ed29c [INFO] running `Command { std: "docker" "start" "-a" "364dff3f7067579e8a00b089d9b4e9ed3bc5c1babdcb0e96abb817c45f7ed29c", kill_on_drop: false }` [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/board.rs:68:9 [INFO] [stderr] | [INFO] [stderr] 68 | &mut self.cols[col_idx - 1].remove(&value); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_must_use)]` on by default [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 68 | let _ = &mut self.cols[col_idx - 1].remove(&value); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/board.rs:69:9 [INFO] [stderr] | [INFO] [stderr] 69 | &mut self.rows[row_idx - 1].remove(&value); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 69 | let _ = &mut self.rows[row_idx - 1].remove(&value); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: unused borrow that must be used [INFO] [stderr] --> src/board.rs:70:9 [INFO] [stderr] | [INFO] [stderr] 70 | &mut self.squares[(col_idx - 1) / 3 + 3 * ((row_idx - 1) / 3)].remove(&value); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value [INFO] [stderr] | [INFO] [stderr] help: use `let _ = ...` to ignore the resulting value [INFO] [stderr] | [INFO] [stderr] 70 | let _ = &mut self.squares[(col_idx - 1) / 3 + 3 * ((row_idx - 1) / 3)].remove(&value); [INFO] [stderr] | +++++++ [INFO] [stderr] [INFO] [stderr] warning: `sudoku` (bin "sudoku" test) generated 3 warnings [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.04s [INFO] [stderr] Running unittests (/opt/rustwide/target/debug/deps/sudoku-c1a10d73a0755d46) [INFO] [stdout] [INFO] [stdout] running 24 tests [INFO] [stdout] test board::tests::test_clear_value_at_removes_the_value_at_a_locations_col ... ok [INFO] [stdout] test board::tests::test_clear_value_at_removes_the_value_at_a_locations_cell ... ok [INFO] [stdout] test board::tests::test_is_empty_at_return_false_if_cell_at_location_is_not_empty ... ok [INFO] [stdout] test board::tests::test_setting_unacceptable_value_returns_false ... ok [INFO] [stdout] test board::tests::test_setting_unacceptable_value_does_not_update_board ... ok [INFO] [stdout] test board::tests::test_new_board_has_nine_rows ... ok [INFO] [stdout] test board::tests::test_setting_unacceptable_value_leaves_state_unchanged ... ok [INFO] [stdout] test board::tests::test_new_board_has_nine_cols ... ok [INFO] [stdout] test board::tests::test_setting_acceptable_value_updates_board ... ok [INFO] [stdout] test board::tests::test_clear_value_at_removes_the_value_at_a_locations_row ... ok [INFO] [stdout] test board::tests::test_setting_acceptable_value_returns_true ... ok [INFO] [stdout] test board::tests::test_new_board_has_nine_boxes ... ok [INFO] [stdout] test board::tests::test_the_board_can_be_initialised_from_a_string ... ok [INFO] [stdout] test cell_group::test::test_insert_stores_digit ... ok [INFO] [stdout] test cell_group::test::test_contains_returns_true_if_number_is_stored ... ok [INFO] [stdout] test board::tests::test_the_board_can_print_itself ... ok [INFO] [stdout] test cell_group::test::test_insert_accepts_0_to_9 ... ok [INFO] [stdout] test board::tests::test_setting_value_puts_value_in_correct_groups ... ok [INFO] [stdout] test board::tests::test_clear_value_at_removes_the_value_at_a_locations_square ... ok [INFO] [stdout] test board::tests::test_is_empty_at_return_true_if_cell_at_location_is_empty ... ok [INFO] [stdout] test cell_group::test::test_remove_takes_digit_out_of_cell_group ... ok [INFO] [stdout] test cell_group::test::test_contains_returns_false_if_number_is_not_stored ... ok [INFO] [stdout] test board::tests::test_that_the_board_solves_sudoku ... ok [INFO] [stdout] test cell_group::test::test_insert_rejects_values_more_than_nine - should panic ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 24 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.11s [INFO] [stdout] [INFO] running `Command { std: "docker" "inspect" "364dff3f7067579e8a00b089d9b4e9ed3bc5c1babdcb0e96abb817c45f7ed29c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "364dff3f7067579e8a00b089d9b4e9ed3bc5c1babdcb0e96abb817c45f7ed29c", kill_on_drop: false }` [INFO] [stdout] 364dff3f7067579e8a00b089d9b4e9ed3bc5c1babdcb0e96abb817c45f7ed29c