[INFO] fetching crate simple-grid 2.0.0...
[INFO] testing simple-grid-2.0.0 against 1.55.0 for beta-1.56-1
[INFO] extracting crate simple-grid 2.0.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate simple-grid 2.0.0 on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate simple-grid 2.0.0
[INFO] finished tweaking crates.io crate simple-grid 2.0.0
[INFO] tweaked toml for crates.io crate simple-grid 2.0.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate simple-grid 2.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded itoa v0.4.7
[INFO] [stderr]   Downloaded syn v1.0.56
[INFO] [stderr]   Downloaded quote v1.0.8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dcdab2a8112dec507785e32bb9c687e8d2b262abe385460c1dd43f73ba0fd439
[INFO] running `Command { std: "docker" "start" "-a" "dcdab2a8112dec507785e32bb9c687e8d2b262abe385460c1dd43f73ba0fd439", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dcdab2a8112dec507785e32bb9c687e8d2b262abe385460c1dd43f73ba0fd439", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcdab2a8112dec507785e32bb9c687e8d2b262abe385460c1dd43f73ba0fd439", kill_on_drop: false }`
[INFO] [stdout] dcdab2a8112dec507785e32bb9c687e8d2b262abe385460c1dd43f73ba0fd439
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] af8b1579b1e7147df4ce9bf31a199c31615e59bbff8183ea0bafdb0398736c83
[INFO] running `Command { std: "docker" "start" "-a" "af8b1579b1e7147df4ce9bf31a199c31615e59bbff8183ea0bafdb0398736c83", kill_on_drop: false }`
[INFO] [stderr]    Compiling simple-grid v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `Command { std: "docker" "inspect" "af8b1579b1e7147df4ce9bf31a199c31615e59bbff8183ea0bafdb0398736c83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af8b1579b1e7147df4ce9bf31a199c31615e59bbff8183ea0bafdb0398736c83", kill_on_drop: false }`
[INFO] [stdout] af8b1579b1e7147df4ce9bf31a199c31615e59bbff8183ea0bafdb0398736c83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8096c6b8797c46a842a7b59a4c2d5cfff4ec037f3f93c003b51e61cbea002626
[INFO] running `Command { std: "docker" "start" "-a" "8096c6b8797c46a842a7b59a4c2d5cfff4ec037f3f93c003b51e61cbea002626", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling serde_json v1.0.60
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling simple-grid v2.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 9.14s
[INFO] running `Command { std: "docker" "inspect" "8096c6b8797c46a842a7b59a4c2d5cfff4ec037f3f93c003b51e61cbea002626", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8096c6b8797c46a842a7b59a4c2d5cfff4ec037f3f93c003b51e61cbea002626", kill_on_drop: false }`
[INFO] [stdout] 8096c6b8797c46a842a7b59a4c2d5cfff4ec037f3f93c003b51e61cbea002626
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] c956cb2b4168f0a0490a7dba037073b03607133450287d9bccd92101705875a6
[INFO] running `Command { std: "docker" "start" "-a" "c956cb2b4168f0a0490a7dba037073b03607133450287d9bccd92101705875a6", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/simple_grid-ecca5868c8d28b2a)
[INFO] [stdout] running 27 tests
[INFO] [stdout] test tests::col_iter_test ... ok
[INFO] [stdout] test tests::insert_column_at_end_test ... ok
[INFO] [stdout] test tests::remove_column_test ... ok
[INFO] [stdout] test tests::swap_columns_test ... ok
[INFO] [stdout] test tests::swap_rows_test ... ok
[INFO] [stdout] test tests::flip_vertically_test ... ok
[INFO] [stdout] test tests::insert_row_at_end_test ... ok
[INFO] [stdout] test tests::transpose_test ... ok
[INFO] [stdout] test tests::remove_row_test ... ok
[INFO] [stdout] test tests::remove_column_until_empty_test ... ok
[INFO] [stdout] test tests::is_empty_test ... ok
[INFO] [stdout] test tests::replace_cell_test ... ok
[INFO] [stdout] test tests::set_value_test ... ok
[INFO] [stdout] test tests::flip_horizontally_test ... ok
[INFO] [stdout] test tests::insert_row_in_middle_test ... ok
[INFO] [stdout] test tests::row_iter_test ... ok
[INFO] [stdout] test tests::subgrid_test ... ok
[INFO] [stdout] test tests::new_default_test ... ok
[INFO] [stdout] test tests::remove_row_until_empty_test ... ok
[INFO] [stdout] test tests::replace_column_test ... ok
[INFO] [stdout] test tests::rotate_cw_test ... ok
[INFO] [stdout] test tests::contains_test ... ok
[INFO] [stdout] test tests::swap_cells_test ... ok
[INFO] [stdout] test tests::replace_row_test ... ok
[INFO] [stdout] test tests::rotate_ccw_test ... ok
[INFO] [stdout] test tests::insert_column_in_middle_test ... ok
[INFO] [stderr]    Doc-tests simple-grid
[INFO] [stdout] test tests::index_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 27 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.05s
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 20 tests
[INFO] [stdout] test src/lib.rs - Grid<T>::is_square (line 118) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::dimensions (line 105) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::row_iter (line 193) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::contains (line 789) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::new (line 32) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::area (line 140) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::get (line 153) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::swap_cells (line 476) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::remove_column (line 436) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::column_iter (line 211) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::transpose (line 664) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::rows (line 740) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::columns (line 753) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::insert_row (line 230) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::rotate_cw (line 554) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::remove_row (line 299) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::insert_column (line 348) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::flip_horizontally (line 592) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::rotate_ccw (line 516) ... ok
[INFO] [stdout] test src/lib.rs - Grid<T>::flip_vertically (line 628) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 20 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 1.97s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "c956cb2b4168f0a0490a7dba037073b03607133450287d9bccd92101705875a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c956cb2b4168f0a0490a7dba037073b03607133450287d9bccd92101705875a6", kill_on_drop: false }`
[INFO] [stdout] c956cb2b4168f0a0490a7dba037073b03607133450287d9bccd92101705875a6