[INFO] fetching crate simple-grid 2.2.1...
[INFO] testing simple-grid-2.2.1 against master#caccb4d0368bd918ef6668af8e13834d07040417 for pr-146098-1
[INFO] extracting crate simple-grid 2.2.1 into /workspace/builds/worker-4-tc1/source
[INFO] started tweaking crates.io crate simple-grid 2.2.1
[INFO] finished tweaking crates.io crate simple-grid 2.2.1
[INFO] tweaked toml for crates.io crate simple-grid 2.2.1 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate simple-grid 2.2.1 on toolchain caccb4d0368bd918ef6668af8e13834d07040417
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate simple-grid 2.2.1 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" "+caccb4d0368bd918ef6668af8e13834d07040417" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded syn v1.0.56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4b84d53649e1ab0d8f340879882644120e76b02215225d3ed1e3d4db82950fb4
[INFO] running `Command { std: "docker" "start" "-a" "4b84d53649e1ab0d8f340879882644120e76b02215225d3ed1e3d4db82950fb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4b84d53649e1ab0d8f340879882644120e76b02215225d3ed1e3d4db82950fb4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b84d53649e1ab0d8f340879882644120e76b02215225d3ed1e3d4db82950fb4", kill_on_drop: false }`
[INFO] [stdout] 4b84d53649e1ab0d8f340879882644120e76b02215225d3ed1e3d4db82950fb4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cb13dd753754f3a889c3d420cf5bd79a0cb2811f24ec02a0790e5683f73addf3
[INFO] running `Command { std: "docker" "start" "-a" "cb13dd753754f3a889c3d420cf5bd79a0cb2811f24ec02a0790e5683f73addf3", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple-grid v2.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `panic_if_empty` is never used
[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]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `panic_if_not_square` is never used
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "cb13dd753754f3a889c3d420cf5bd79a0cb2811f24ec02a0790e5683f73addf3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb13dd753754f3a889c3d420cf5bd79a0cb2811f24ec02a0790e5683f73addf3", kill_on_drop: false }`
[INFO] [stdout] cb13dd753754f3a889c3d420cf5bd79a0cb2811f24ec02a0790e5683f73addf3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 40ba9e4009355e70ea7387a48dba39de654fabac54a46b7ca7626e091bd471e4
[INFO] running `Command { std: "docker" "start" "-a" "40ba9e4009355e70ea7387a48dba39de654fabac54a46b7ca7626e091bd471e4", kill_on_drop: false }`
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stdout] warning: function `panic_if_empty` is never used
[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]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `panic_if_not_square` is never used
[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] [stderr]    Compiling simple-grid v2.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: function `panic_if_empty` is never used
[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]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `panic_if_not_square` is never used
[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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 6.34s
[INFO] running `Command { std: "docker" "inspect" "40ba9e4009355e70ea7387a48dba39de654fabac54a46b7ca7626e091bd471e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "40ba9e4009355e70ea7387a48dba39de654fabac54a46b7ca7626e091bd471e4", kill_on_drop: false }`
[INFO] [stdout] 40ba9e4009355e70ea7387a48dba39de654fabac54a46b7ca7626e091bd471e4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+caccb4d0368bd918ef6668af8e13834d07040417" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] db6e9aba826a1b1f811efa06f3edb89d9cd977f566c157fe2ad344f071ffe4fa
[INFO] running `Command { std: "docker" "start" "-a" "db6e9aba826a1b1f811efa06f3edb89d9cd977f566c157fe2ad344f071ffe4fa", kill_on_drop: false }`
[INFO] [stderr] warning: function `panic_if_empty` is never used
[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]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function `panic_if_not_square` is never used
[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 2 warnings
[INFO] [stderr] warning: `simple-grid` (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/simple_grid-30fe4529412c9a07)
[INFO] [stdout] 
[INFO] [stdout] running 30 tests
[INFO] [stdout] test index::tests::to_linear_idx_in_test ... ok
[INFO] [stdout] test tests::insert_column_at_end_test ... ok
[INFO] [stdout] test tests::flip_vertically_test ... ok
[INFO] [stdout] test tests::indices_test ... ok
[INFO] [stdout] test tests::contains_test ... ok
[INFO] [stdout] test tests::insert_column_in_middle_test ... ok
[INFO] [stdout] test tests::flip_horizontally_test ... ok
[INFO] [stdout] test tests::col_iter_test ... ok
[INFO] [stdout] test tests::insert_row_at_end_test ... ok
[INFO] [stdout] test tests::insert_row_in_middle_test ... ok
[INFO] [stdout] test tests::is_empty_test ... ok
[INFO] [stdout] test tests::new_default_test ... ok
[INFO] [stdout] test tests::remove_column_test ... ok
[INFO] [stdout] test tests::remove_column_until_empty_test ... ok
[INFO] [stdout] test tests::replace_cell_test ... ok
[INFO] [stdout] test tests::replace_column_test ... ok
[INFO] [stdout] test tests::remove_row_test ... ok
[INFO] [stdout] test tests::replace_row_test ... ok
[INFO] [stdout] test tests::rotate_cw_test ... ok
[INFO] [stdout] test tests::rotate_ccw_test ... ok
[INFO] [stdout] test tests::row_iter_test ... ok
[INFO] [stdout] test tests::swap_rows_test ... ok
[INFO] [stdout] test tests::remove_row_until_empty_test ... ok
[INFO] [stdout] test tests::subgrid_test ... ok
[INFO] [stdout] test tests::swap_cells_test ... ok
[INFO] [stdout] test tests::transpose_test ... ok
[INFO] [stdout] test tests::iter_test ... ok
[INFO] [stdout] test tests::swap_columns_test ... ok
[INFO] [stdout] test tests::index_test ... ok
[INFO] [stdout] test tests::set_value_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 30 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.23s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests simple_grid
[INFO] [stdout] 
[INFO] [stdout] running 62 tests
[INFO] [stdout] test src/index.rs - index::GridIndex::right (line 98) ... ok
[INFO] [stdout] test src/index.rs - index::GridIndex::down_left (line 194) ... ok
[INFO] [stdout] test src/index.rs - index::GridIndex::down_right (line 177) ... ok
[INFO] [stdout] test src/index.rs - index::GridIndex::neighbors (line 26) ... ok
[INFO] [stdout] test src/index.rs - index::GridIndex::up_left (line 145) ... ok
[INFO] [stdout] test src/index.rs - index::GridIndex::up_right (line 159) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::cells_with_indices_iter (line 938) ... ok
[INFO] [stdout] test src/index.rs - index::GridIndex::left (line 127) ... ok
[INFO] [stdout] test src/index.rs - index::GridIndex::cardinal_neighbors (line 57) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::area (line 196) ... ok
[INFO] [stdout] test src/index.rs - index::GridIndex::down (line 112) ... ok
[INFO] [stdout] test src/index.rs - index::GridIndex::up (line 80) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::column_iter (line 267) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::contains (line 1434) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::dimensions (line 153) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::cardinal_neighbor_cells_of (line 1055) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::contains_index (line 952) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::columns (line 884) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::down_index (line 1237) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::down_right_index (line 1195) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::down_left_index (line 1279) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::down_right_cell (line 1219) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::cardinal_neighbor_indices_of (line 1030) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::get (line 209) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::from_grid (line 68) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::insert_row (line 286) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::is_square (line 166) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::indices (line 923) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::insert_column (line 442) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::flip_horizontally (line 723) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::down_cell (line 1261) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::down_left_cell (line 1303) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::neighbor_cells_of (line 1000) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::flip_vertically (line 759) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::new_default (line 1413) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::left_index (line 1321) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::neighbor_indices_of (line 969) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::left_cell (line 1345) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::pop_column (line 586) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::push_column (line 488) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::position (line 901) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::new (line 38) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::right_index (line 1153) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::subgrid (line 111) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::right_cell (line 1177) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::to_pretty_string (line 1452) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::up_cell (line 1099) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::remove_column (line 547) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::rotate_ccw (line 647) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::swap_cells (line 607) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::rows (line 871) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::pop_row (line 402) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::push_row (line 331) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::up_left_cell (line 1387) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::up_index (line 1075) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::transpose (line 795) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::row_iter (line 249) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::up_right_index (line 1117) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::up_left_index (line 1363) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::remove_row (line 373) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::rotate_cw (line 685) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::up_right_cell (line 1135) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 62 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 3.19s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "db6e9aba826a1b1f811efa06f3edb89d9cd977f566c157fe2ad344f071ffe4fa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db6e9aba826a1b1f811efa06f3edb89d9cd977f566c157fe2ad344f071ffe4fa", kill_on_drop: false }`
[INFO] [stdout] db6e9aba826a1b1f811efa06f3edb89d9cd977f566c157fe2ad344f071ffe4fa