[INFO] fetching crate simple-grid 2.1.1...
[INFO] testing simple-grid-2.1.1 against beta-2022-02-22 for beta-1.60-1
[INFO] extracting crate simple-grid 2.1.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate simple-grid 2.1.1 on toolchain beta-2022-02-22
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate simple-grid 2.1.1
[INFO] finished tweaking crates.io crate simple-grid 2.1.1
[INFO] tweaked toml for crates.io crate simple-grid 2.1.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate crates.io crate simple-grid 2.1.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "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] a36f0ad725adee9a4d3977188a34c7b3116c4f9a78dde3a97924da216ffeb71e
[INFO] running `Command { std: "docker" "start" "-a" "a36f0ad725adee9a4d3977188a34c7b3116c4f9a78dde3a97924da216ffeb71e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a36f0ad725adee9a4d3977188a34c7b3116c4f9a78dde3a97924da216ffeb71e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a36f0ad725adee9a4d3977188a34c7b3116c4f9a78dde3a97924da216ffeb71e", kill_on_drop: false }`
[INFO] [stdout] a36f0ad725adee9a4d3977188a34c7b3116c4f9a78dde3a97924da216ffeb71e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4860a14abc1c7ab04abef8cee9adb1b56cd4d8e77ab2f856470524d0a43cfa44
[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" "4860a14abc1c7ab04abef8cee9adb1b56cd4d8e77ab2f856470524d0a43cfa44", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple-grid v2.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `square_size`
[INFO] [stdout]    --> src/lib.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn square_size(&self) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `panic_if_empty`
[INFO] [stdout]   --> src/utils.rs:74:15
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub(crate) fn panic_if_empty<T>(grid: &Grid<T>) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `panic_if_not_square`
[INFO] [stdout]   --> src/utils.rs:81:15
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub(crate) fn panic_if_not_square<T>(grid: &Grid<T>) {
[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 0.65s
[INFO] running `Command { std: "docker" "inspect" "4860a14abc1c7ab04abef8cee9adb1b56cd4d8e77ab2f856470524d0a43cfa44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4860a14abc1c7ab04abef8cee9adb1b56cd4d8e77ab2f856470524d0a43cfa44", kill_on_drop: false }`
[INFO] [stdout] 4860a14abc1c7ab04abef8cee9adb1b56cd4d8e77ab2f856470524d0a43cfa44
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 801dd93338f35ff4283ba2b3f4e2785d20e6700cd60b76db64305b385f12e807
[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" "801dd93338f35ff4283ba2b3f4e2785d20e6700cd60b76db64305b385f12e807", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stdout] warning: associated function is never used: `square_size`
[INFO] [stdout]    --> src/lib.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn square_size(&self) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `panic_if_empty`
[INFO] [stdout]   --> src/utils.rs:74:15
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub(crate) fn panic_if_empty<T>(grid: &Grid<T>) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `panic_if_not_square`
[INFO] [stdout]   --> src/utils.rs:81:15
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub(crate) fn panic_if_not_square<T>(grid: &Grid<T>) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]    Compiling simple-grid v2.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated function is never used: `square_size`
[INFO] [stdout]    --> src/lib.rs:174:8
[INFO] [stdout]     |
[INFO] [stdout] 174 |     fn square_size(&self) -> usize {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `panic_if_empty`
[INFO] [stdout]   --> src/utils.rs:74:15
[INFO] [stdout]    |
[INFO] [stdout] 74 | pub(crate) fn panic_if_empty<T>(grid: &Grid<T>) {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `panic_if_not_square`
[INFO] [stdout]   --> src/utils.rs:81:15
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub(crate) fn panic_if_not_square<T>(grid: &Grid<T>) {
[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 13.40s
[INFO] running `Command { std: "docker" "inspect" "801dd93338f35ff4283ba2b3f4e2785d20e6700cd60b76db64305b385f12e807", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "801dd93338f35ff4283ba2b3f4e2785d20e6700cd60b76db64305b385f12e807", kill_on_drop: false }`
[INFO] [stdout] 801dd93338f35ff4283ba2b3f4e2785d20e6700cd60b76db64305b385f12e807
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 6da5f07c57a52ff39a718a36c698b8582081491532c3b96bdd181ac4b81a3bc3
[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" "6da5f07c57a52ff39a718a36c698b8582081491532c3b96bdd181ac4b81a3bc3", kill_on_drop: false }`
[INFO] [stdout] 
[INFO] [stderr] warning: associated function is never used: `square_size`
[INFO] [stdout] running 29 tests
[INFO] [stderr]    --> src/lib.rs:174:8
[INFO] [stdout] test index::tests::to_linear_idx_in_test ... ok
[INFO] [stderr]     |
[INFO] [stdout] test tests::flip_horizontally_test ... ok
[INFO] [stderr] 174 |     fn square_size(&self) -> usize {
[INFO] [stdout] test tests::insert_column_at_end_test ... ok
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stdout] test tests::flip_vertically_test ... ok
[INFO] [stderr]     |
[INFO] [stdout] test tests::insert_column_in_middle_test ... ok
[INFO] [stderr]     = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `panic_if_empty`
[INFO] [stderr]   --> src/utils.rs:74:15
[INFO] [stderr]    |
[INFO] [stderr] 74 | pub(crate) fn panic_if_empty<T>(grid: &Grid<T>) {
[INFO] [stderr]    |               ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `panic_if_not_square`
[INFO] [stderr]   --> src/utils.rs:81:15
[INFO] [stderr]    |
[INFO] [stderr] 81 | pub(crate) fn panic_if_not_square<T>(grid: &Grid<T>) {
[INFO] [stderr]    |               ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `simple-grid` (lib) generated 3 warnings
[INFO] [stderr] warning: `simple-grid` (lib test) generated 3 warnings (3 duplicates)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/simple_grid-5af776b66c39536b)
[INFO] [stdout] test tests::insert_row_in_middle_test ... ok
[INFO] [stdout] test tests::is_empty_test ... ok
[INFO] [stdout] test tests::insert_row_at_end_test ... ok
[INFO] [stdout] test tests::new_default_test ... ok
[INFO] [stdout] test tests::remove_column_test ... ok
[INFO] [stdout] test tests::set_value_test ... ok
[INFO] [stdout] test tests::replace_row_test ... ok
[INFO] [stdout] test tests::row_iter_test ... ok
[INFO] [stdout] test tests::rotate_ccw_test ... ok
[INFO] [stdout] test tests::rotate_cw_test ... ok
[INFO] [stdout] test tests::indices_test ... ok
[INFO] [stdout] test tests::contains_test ... ok
[INFO] [stdout] test tests::subgrid_test ... ok
[INFO] [stdout] test tests::swap_cells_test ... ok
[INFO] [stdout] test tests::swap_columns_test ... ok
[INFO] [stdout] test tests::swap_rows_test ... ok
[INFO] [stdout] test tests::remove_column_until_empty_test ... ok
[INFO] [stdout] test tests::col_iter_test ... ok
[INFO] [stdout] test tests::remove_row_test ... ok
[INFO] [stdout] test tests::remove_row_until_empty_test ... ok
[INFO] [stdout] test tests::replace_cell_test ... ok
[INFO] [stdout] test tests::transpose_test ... ok
[INFO] [stdout] test tests::replace_column_test ... ok
[INFO] [stdout] test tests::index_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 29 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.09s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests simple-grid
[INFO] [stdout] 
[INFO] [stdout] running 30 tests
[INFO] [stdout] test src/lib.rs - Grid<T>::dimensions (line 149) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::area (line 191) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::is_square (line 162) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::column_iter (line 262) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::new_default (line 942) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::contains (line 963) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::columns (line 879) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::indices (line 918) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::from_grid (line 64) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::get (line 204) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::new (line 34) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::insert_column (line 437) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::pop_column (line 581) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::insert_row (line 281) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::flip_horizontally (line 718) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::flip_vertically (line 754) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::position (line 896) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::pop_row (line 397) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::rows (line 866) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::row_iter (line 244) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::swap_cells (line 602) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::subgrid (line 107) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::remove_column (line 542) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::push_row (line 326) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::remove_row (line 368) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::to_pretty_string (line 981) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::push_column (line 483) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::transpose (line 790) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::rotate_ccw (line 642) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::rotate_cw (line 680) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 30 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 11.99s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "6da5f07c57a52ff39a718a36c698b8582081491532c3b96bdd181ac4b81a3bc3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6da5f07c57a52ff39a718a36c698b8582081491532c3b96bdd181ac4b81a3bc3", kill_on_drop: false }`
[INFO] [stdout] 6da5f07c57a52ff39a718a36c698b8582081491532c3b96bdd181ac4b81a3bc3