[INFO] cloning repository https://github.com/NougatRillettes/FourInARust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/NougatRillettes/FourInARust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNougatRillettes%2FFourInARust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNougatRillettes%2FFourInARust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6748701ea3c1022bc70e459bfcf2f641433154af
[INFO] checking NougatRillettes/FourInARust against try#a7a572ce3edd6d476191fbfe92c9c1986e009b34 for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNougatRillettes%2FFourInARust" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/NougatRillettes/FourInARust on toolchain a7a572ce3edd6d476191fbfe92c9c1986e009b34
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/NougatRillettes/FourInARust
[INFO] finished tweaking git repo https://github.com/NougatRillettes/FourInARust
[INFO] tweaked toml for git repo https://github.com/NougatRillettes/FourInARust written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/NougatRillettes/FourInARust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded array-init v2.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 38003902b8ab6933077e974a8cfbaffe543374af2fb88a09865fe2ee93481510
[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" "38003902b8ab6933077e974a8cfbaffe543374af2fb88a09865fe2ee93481510", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "38003902b8ab6933077e974a8cfbaffe543374af2fb88a09865fe2ee93481510", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "38003902b8ab6933077e974a8cfbaffe543374af2fb88a09865fe2ee93481510", kill_on_drop: false }`
[INFO] [stdout] 38003902b8ab6933077e974a8cfbaffe543374af2fb88a09865fe2ee93481510
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+a7a572ce3edd6d476191fbfe92c9c1986e009b34" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0bdc37c6e73219d1b0c4c821841edb9ef67f7b5baff7cb5009d7dccfc10f0d6d
[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" "0bdc37c6e73219d1b0c4c821841edb9ef67f7b5baff7cb5009d7dccfc10f0d6d", kill_on_drop: false }`
[INFO] [stderr] Copying to /tmp/fixit
[INFO] [stderr] Running `cargo fix --edition`
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling feature-probe v0.1.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking array-init v2.0.0
[INFO] [stderr]    Compiling bv v0.11.1
[INFO] [stderr]    Compiling ahash v0.7.2
[INFO] [stderr]     Checking four_in_a_rust v0.1.0 (/tmp/fixit)
[INFO] [stderr]    Migrating src/main.rs from 2018 edition to 2021
[INFO] [stderr]        Fixed src/ai.rs (1 fix)
[INFO] [stderr]        Fixed src/board.rs (1 fix)
[INFO] [stdout] warning: unused import: `io::BufRead`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use io::BufRead;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::BufRead`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use io::BufRead;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PLAYER_COLOR`
[INFO] [stdout]  --> src/ai.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | const PLAYER_COLOR: NonEmptySqrState = NonEmptySqrState::Red;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `other`
[INFO] [stdout]   --> src/board.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn other(self) -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> src/board.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn is_empty(self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]   --> src/board.rs:99:12
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub fn len(&self) -> u8 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_mut`
[INFO] [stdout]    --> src/board.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn get_mut(&mut self, i: usize) -> Option<&mut SqrState> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_cell_mut`
[INFO] [stdout]    --> src/board.rs:217:8
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn get_cell_mut(&mut self, coli: usize, rowi: usize) -> BoardResult<&mut SqrState> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_win_at`
[INFO] [stdout]    --> src/board.rs:253:12
[INFO] [stdout]     |
[INFO] [stdout] 253 |     pub fn try_win_at(&self, col_i: usize, row_i: usize) -> BoardResult<(SqrState, bool)> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_add_and_check`
[INFO] [stdout]    --> src/board.rs:279:12
[INFO] [stdout]     |
[INFO] [stdout] 279 |     pub fn try_add_and_check(&mut self, coli: usize, color: NonEmptySqrState) -> BoardResult<bool> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `columns`
[INFO] [stdout]    --> src/board.rs:284:12
[INFO] [stdout]     |
[INFO] [stdout] 284 |     pub fn columns(&self) -> &[Column<ROWS>; COLS] {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_packed_repr`
[INFO] [stdout]    --> src/board.rs:288:12
[INFO] [stdout]     |
[INFO] [stdout] 288 |     pub fn to_packed_repr(&self) -> u128 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> src/packedboard.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn is_empty(self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ALL_ROW_IDXS`
[INFO] [stdout]   --> src/packedboard.rs:75:1
[INFO] [stdout]    |
[INFO] [stdout] 75 | / pub const ALL_ROW_IDXS : [ColIdx; NROW as usize] = [
[INFO] [stdout] 76 | |     Idx(0),
[INFO] [stdout] 77 | |     Idx(1),
[INFO] [stdout] 78 | |     Idx(2),
[INFO] [stdout] ...  |
[INFO] [stdout] 81 | |     Idx(5),
[INFO] [stdout] 82 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RowIndexOutOfBounds`
[INFO] [stdout]   --> src/packedboard.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 91 | /     RowIndexOutOfBounds {
[INFO] [stdout] 92 | |         required_index: usize,
[INFO] [stdout] 93 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `check_row_idx`
[INFO] [stdout]    --> src/packedboard.rs:199:12
[INFO] [stdout]     |
[INFO] [stdout] 199 |     pub fn check_row_idx(idx: u8) -> BoardResult<RowIdx> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `col_is_full`
[INFO] [stdout]    --> src/packedboard.rs:219:12
[INFO] [stdout]     |
[INFO] [stdout] 219 |     pub fn col_is_full(&self, coli: ColIdx) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PLAYER_COLOR`
[INFO] [stdout]  --> src/ai.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | const PLAYER_COLOR: NonEmptySqrState = NonEmptySqrState::Red;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Red`
[INFO] [stdout]  --> src/board.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Red,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Yellow`
[INFO] [stdout]  --> src/board.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Yellow,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `other`
[INFO] [stdout]   --> src/board.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn other(self) -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `NonEmpty`
[INFO] [stdout]   --> src/board.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     NonEmpty(NonEmptySqrState),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> src/board.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn is_empty(self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ColumnFull`
[INFO] [stdout]   --> src/board.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     ColumnFull,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/board.rs:88:8
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_full`
[INFO] [stdout]   --> src/board.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn is_full(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]   --> src/board.rs:99:12
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub fn len(&self) -> u8 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_push`
[INFO] [stdout]    --> src/board.rs:103:8
[INFO] [stdout]     |
[INFO] [stdout] 103 |     fn try_push(&mut self, x: NonEmptySqrState) -> Result<usize, ColumnError> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_mut`
[INFO] [stdout]    --> src/board.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn get_mut(&mut self, i: usize) -> Option<&mut SqrState> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ColumnFull`
[INFO] [stdout]    --> src/board.rs:133:5
[INFO] [stdout]     |
[INFO] [stdout] 133 | /     ColumnFull {
[INFO] [stdout] 134 | |         column_index: usize,
[INFO] [stdout] 135 | |         tried_to_push: NonEmptySqrState,
[INFO] [stdout] 136 | |     },
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/board.rs:179:12
[INFO] [stdout]     |
[INFO] [stdout] 179 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `col_is_full`
[INFO] [stdout]    --> src/board.rs:186:12
[INFO] [stdout]     |
[INFO] [stdout] 186 |     pub fn col_is_full(&self, coli: usize) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_col_mut`
[INFO] [stdout]    --> src/board.rs:200:8
[INFO] [stdout]     |
[INFO] [stdout] 200 |     fn get_col_mut(&mut self, coli: usize) -> BoardResult<&mut Column<ROWS>> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_cell_mut`
[INFO] [stdout]    --> src/board.rs:217:8
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn get_cell_mut(&mut self, coli: usize, rowi: usize) -> BoardResult<&mut SqrState> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_add_to_col`
[INFO] [stdout]    --> src/board.rs:229:12
[INFO] [stdout]     |
[INFO] [stdout] 229 |     pub fn try_add_to_col(
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_to_col`
[INFO] [stdout]    --> src/board.rs:248:12
[INFO] [stdout]     |
[INFO] [stdout] 248 |     pub fn add_to_col(&mut self, coli: usize, color: NonEmptySqrState) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_win_at`
[INFO] [stdout]    --> src/board.rs:253:12
[INFO] [stdout]     |
[INFO] [stdout] 253 |     pub fn try_win_at(&self, col_i: usize, row_i: usize) -> BoardResult<(SqrState, bool)> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_add_and_check`
[INFO] [stdout]    --> src/board.rs:279:12
[INFO] [stdout]     |
[INFO] [stdout] 279 |     pub fn try_add_and_check(&mut self, coli: usize, color: NonEmptySqrState) -> BoardResult<bool> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `columns`
[INFO] [stdout]    --> src/board.rs:284:12
[INFO] [stdout]     |
[INFO] [stdout] 284 |     pub fn columns(&self) -> &[Column<ROWS>; COLS] {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_packed_repr`
[INFO] [stdout]    --> src/board.rs:288:12
[INFO] [stdout]     |
[INFO] [stdout] 288 |     pub fn to_packed_repr(&self) -> u128 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> src/packedboard.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn is_empty(self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ALL_ROW_IDXS`
[INFO] [stdout]   --> src/packedboard.rs:75:1
[INFO] [stdout]    |
[INFO] [stdout] 75 | / pub const ALL_ROW_IDXS : [ColIdx; NROW as usize] = [
[INFO] [stdout] 76 | |     Idx(0),
[INFO] [stdout] 77 | |     Idx(1),
[INFO] [stdout] 78 | |     Idx(2),
[INFO] [stdout] ...  |
[INFO] [stdout] 81 | |     Idx(5),
[INFO] [stdout] 82 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RowIndexOutOfBounds`
[INFO] [stdout]   --> src/packedboard.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 91 | /     RowIndexOutOfBounds {
[INFO] [stdout] 92 | |         required_index: usize,
[INFO] [stdout] 93 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `check_row_idx`
[INFO] [stdout]    --> src/packedboard.rs:199:12
[INFO] [stdout]     |
[INFO] [stdout] 199 |     pub fn check_row_idx(idx: u8) -> BoardResult<RowIdx> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `col_is_full`
[INFO] [stdout]    --> src/packedboard.rs:219:12
[INFO] [stdout]     |
[INFO] [stdout] 219 |     pub fn col_is_full(&self, coli: ColIdx) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.23s
[INFO] [stderr] Running `cargo check` to verify 2021
[INFO] [stderr]     Checking four_in_a_rust v0.1.0 (/tmp/fixit)
[INFO] [stdout] warning: unused import: `io::BufRead`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use io::BufRead;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `io::BufRead`
[INFO] [stdout]  --> src/main.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use io::BufRead;
[INFO] [stdout]   |     ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PLAYER_COLOR`
[INFO] [stdout]  --> src/ai.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | const PLAYER_COLOR: NonEmptySqrState = NonEmptySqrState::Red;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Red`
[INFO] [stdout]  --> src/board.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     Red,
[INFO] [stdout]   |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Yellow`
[INFO] [stdout]  --> src/board.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Yellow,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `other`
[INFO] [stdout]   --> src/board.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn other(self) -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `NonEmpty`
[INFO] [stdout]   --> src/board.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 37 |     NonEmpty(NonEmptySqrState),
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> src/board.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn is_empty(self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ColumnFull`
[INFO] [stdout]   --> src/board.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     ColumnFull,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/board.rs:88:8
[INFO] [stdout]    |
[INFO] [stdout] 88 |     fn new() -> Self {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_full`
[INFO] [stdout]   --> src/board.rs:95:12
[INFO] [stdout]    |
[INFO] [stdout] 95 |     pub fn is_full(&self) -> bool {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]   --> src/board.rs:99:12
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub fn len(&self) -> u8 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_push`
[INFO] [stdout]    --> src/board.rs:103:8
[INFO] [stdout]     |
[INFO] [stdout] 103 |     fn try_push(&mut self, x: NonEmptySqrState) -> Result<usize, ColumnError> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_mut`
[INFO] [stdout]    --> src/board.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn get_mut(&mut self, i: usize) -> Option<&mut SqrState> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `ColumnFull`
[INFO] [stdout]    --> src/board.rs:133:5
[INFO] [stdout]     |
[INFO] [stdout] 133 | /     ColumnFull {
[INFO] [stdout] 134 | |         column_index: usize,
[INFO] [stdout] 135 | |         tried_to_push: NonEmptySqrState,
[INFO] [stdout] 136 | |     },
[INFO] [stdout]     | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]    --> src/board.rs:179:12
[INFO] [stdout]     |
[INFO] [stdout] 179 |     pub fn new() -> Self {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `col_is_full`
[INFO] [stdout]    --> src/board.rs:186:12
[INFO] [stdout]     |
[INFO] [stdout] 186 |     pub fn col_is_full(&self, coli: usize) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_col_mut`
[INFO] [stdout]    --> src/board.rs:200:8
[INFO] [stdout]     |
[INFO] [stdout] 200 |     fn get_col_mut(&mut self, coli: usize) -> BoardResult<&mut Column<ROWS>> {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_cell_mut`
[INFO] [stdout]    --> src/board.rs:217:8
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn get_cell_mut(&mut self, coli: usize, rowi: usize) -> BoardResult<&mut SqrState> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_add_to_col`
[INFO] [stdout]    --> src/board.rs:229:12
[INFO] [stdout]     |
[INFO] [stdout] 229 |     pub fn try_add_to_col(
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_to_col`
[INFO] [stdout]    --> src/board.rs:248:12
[INFO] [stdout]     |
[INFO] [stdout] 248 |     pub fn add_to_col(&mut self, coli: usize, color: NonEmptySqrState) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_win_at`
[INFO] [stdout]    --> src/board.rs:253:12
[INFO] [stdout]     |
[INFO] [stdout] 253 |     pub fn try_win_at(&self, col_i: usize, row_i: usize) -> BoardResult<(SqrState, bool)> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_add_and_check`
[INFO] [stdout]    --> src/board.rs:279:12
[INFO] [stdout]     |
[INFO] [stdout] 279 |     pub fn try_add_and_check(&mut self, coli: usize, color: NonEmptySqrState) -> BoardResult<bool> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `columns`
[INFO] [stdout]    --> src/board.rs:284:12
[INFO] [stdout]     |
[INFO] [stdout] 284 |     pub fn columns(&self) -> &[Column<ROWS>; COLS] {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_packed_repr`
[INFO] [stdout]    --> src/board.rs:288:12
[INFO] [stdout]     |
[INFO] [stdout] 288 |     pub fn to_packed_repr(&self) -> u128 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> src/packedboard.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn is_empty(self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ALL_ROW_IDXS`
[INFO] [stdout]   --> src/packedboard.rs:75:1
[INFO] [stdout]    |
[INFO] [stdout] 75 | / pub const ALL_ROW_IDXS : [ColIdx; NROW as usize] = [
[INFO] [stdout] 76 | |     Idx(0),
[INFO] [stdout] 77 | |     Idx(1),
[INFO] [stdout] 78 | |     Idx(2),
[INFO] [stdout] ...  |
[INFO] [stdout] 81 | |     Idx(5),
[INFO] [stdout] 82 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RowIndexOutOfBounds`
[INFO] [stdout]   --> src/packedboard.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 91 | /     RowIndexOutOfBounds {
[INFO] [stdout] 92 | |         required_index: usize,
[INFO] [stdout] 93 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `check_row_idx`
[INFO] [stdout]    --> src/packedboard.rs:199:12
[INFO] [stdout]     |
[INFO] [stdout] 199 |     pub fn check_row_idx(idx: u8) -> BoardResult<RowIdx> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `col_is_full`
[INFO] [stdout]    --> src/packedboard.rs:219:12
[INFO] [stdout]     |
[INFO] [stdout] 219 |     pub fn col_is_full(&self, coli: ColIdx) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PLAYER_COLOR`
[INFO] [stdout]  --> src/ai.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | const PLAYER_COLOR: NonEmptySqrState = NonEmptySqrState::Red;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `other`
[INFO] [stdout]   --> src/board.rs:20:12
[INFO] [stdout]    |
[INFO] [stdout] 20 |     pub fn other(self) -> Self {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> src/board.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 49 |     pub fn is_empty(self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `len`
[INFO] [stdout]   --> src/board.rs:99:12
[INFO] [stdout]    |
[INFO] [stdout] 99 |     pub fn len(&self) -> u8 {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_mut`
[INFO] [stdout]    --> src/board.rs:118:8
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn get_mut(&mut self, i: usize) -> Option<&mut SqrState> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `get_cell_mut`
[INFO] [stdout]    --> src/board.rs:217:8
[INFO] [stdout]     |
[INFO] [stdout] 217 |     fn get_cell_mut(&mut self, coli: usize, rowi: usize) -> BoardResult<&mut SqrState> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_win_at`
[INFO] [stdout]    --> src/board.rs:253:12
[INFO] [stdout]     |
[INFO] [stdout] 253 |     pub fn try_win_at(&self, col_i: usize, row_i: usize) -> BoardResult<(SqrState, bool)> {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `try_add_and_check`
[INFO] [stdout]    --> src/board.rs:279:12
[INFO] [stdout]     |
[INFO] [stdout] 279 |     pub fn try_add_and_check(&mut self, coli: usize, color: NonEmptySqrState) -> BoardResult<bool> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `columns`
[INFO] [stdout]    --> src/board.rs:284:12
[INFO] [stdout]     |
[INFO] [stdout] 284 |     pub fn columns(&self) -> &[Column<ROWS>; COLS] {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_packed_repr`
[INFO] [stdout]    --> src/board.rs:288:12
[INFO] [stdout]     |
[INFO] [stdout] 288 |     pub fn to_packed_repr(&self) -> u128 {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_empty`
[INFO] [stdout]   --> src/packedboard.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn is_empty(self) -> bool {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `ALL_ROW_IDXS`
[INFO] [stdout]   --> src/packedboard.rs:75:1
[INFO] [stdout]    |
[INFO] [stdout] 75 | / pub const ALL_ROW_IDXS : [ColIdx; NROW as usize] = [
[INFO] [stdout] 76 | |     Idx(0),
[INFO] [stdout] 77 | |     Idx(1),
[INFO] [stdout] 78 | |     Idx(2),
[INFO] [stdout] ...  |
[INFO] [stdout] 81 | |     Idx(5),
[INFO] [stdout] 82 | | ];
[INFO] [stdout]    | |__^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `RowIndexOutOfBounds`
[INFO] [stdout]   --> src/packedboard.rs:91:5
[INFO] [stdout]    |
[INFO] [stdout] 91 | /     RowIndexOutOfBounds {
[INFO] [stdout] 92 | |         required_index: usize,
[INFO] [stdout] 93 | |     },
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `check_row_idx`
[INFO] [stdout]    --> src/packedboard.rs:199:12
[INFO] [stdout]     |
[INFO] [stdout] 199 |     pub fn check_row_idx(idx: u8) -> BoardResult<RowIdx> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `col_is_full`
[INFO] [stdout]    --> src/packedboard.rs:219:12
[INFO] [stdout]     |
[INFO] [stdout] 219 |     pub fn col_is_full(&self, coli: ColIdx) -> bool {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 29 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 16 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.69s
[INFO] running `Command { std: "docker" "inspect" "0bdc37c6e73219d1b0c4c821841edb9ef67f7b5baff7cb5009d7dccfc10f0d6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0bdc37c6e73219d1b0c4c821841edb9ef67f7b5baff7cb5009d7dccfc10f0d6d", kill_on_drop: false }`
[INFO] [stdout] 0bdc37c6e73219d1b0c4c821841edb9ef67f7b5baff7cb5009d7dccfc10f0d6d