Nov 30 12:17:51.629 INFO checking AGausmann/tictactoe-rust against master#a49316ddc99d9d595193557fc899f6c52e4d9af9 for pr-56323
Nov 30 12:17:51.629 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-6/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-56323/master#a49316ddc99d9d595193557fc899f6c52e4d9af9:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +a49316ddc99d9d595193557fc899f6c52e4d9af9-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 30 12:17:52.174 INFO [stdout] 88c8c028f27b37e319aba1d8208636d5bb59c9bc07f3e795410daf8d1c651dd4
Nov 30 12:17:52.177 INFO running `"docker" "start" "-a" "88c8c028f27b37e319aba1d8208636d5bb59c9bc07f3e795410daf8d1c651dd4"`
Nov 30 12:17:53.804 INFO [stderr] usermod: no changes
Nov 30 12:17:53.838 INFO [stderr]     Checking tic_tac_toe v0.1.0 (/source)
Nov 30 12:17:54.304 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.304 INFO [stderr]   --> src/main.rs:93:9
Nov 30 12:17:54.304 INFO [stderr]    |
Nov 30 12:17:54.304 INFO [stderr] 85 |             'col: for j in 0..3 {
Nov 30 12:17:54.304 INFO [stderr]    |             ---- first declared here
Nov 30 12:17:54.304 INFO [stderr] ...
Nov 30 12:17:54.304 INFO [stderr] 93 |         'col: for j in 0..3 {
Nov 30 12:17:54.304 INFO [stderr]    |         ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.304 INFO [stderr] 
Nov 30 12:17:54.304 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.304 INFO [stderr]   --> src/main.rs:94:13
Nov 30 12:17:54.304 INFO [stderr]    |
Nov 30 12:17:54.304 INFO [stderr] 84 |         'row: for i in 0..3 {
Nov 30 12:17:54.304 INFO [stderr]    |         ---- first declared here
Nov 30 12:17:54.304 INFO [stderr] ...
Nov 30 12:17:54.304 INFO [stderr] 94 |             'row: for i in 0..3 {
Nov 30 12:17:54.304 INFO [stderr]    |             ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.304 INFO [stderr] 
Nov 30 12:17:54.304 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.304 INFO [stderr]    --> src/main.rs:118:9
Nov 30 12:17:54.304 INFO [stderr]     |
Nov 30 12:17:54.304 INFO [stderr] 84  |         'row: for i in 0..3 {
Nov 30 12:17:54.304 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.304 INFO [stderr] ...
Nov 30 12:17:54.304 INFO [stderr] 118 |         'row: for i in 0..3 {
Nov 30 12:17:54.304 INFO [stderr]     |         ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.304 INFO [stderr] 
Nov 30 12:17:54.304 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.304 INFO [stderr]    --> src/main.rs:118:9
Nov 30 12:17:54.304 INFO [stderr]     |
Nov 30 12:17:54.304 INFO [stderr] 94  |             'row: for i in 0..3 {
Nov 30 12:17:54.304 INFO [stderr]     |             ---- first declared here
Nov 30 12:17:54.304 INFO [stderr] ...
Nov 30 12:17:54.304 INFO [stderr] 118 |         'row: for i in 0..3 {
Nov 30 12:17:54.304 INFO [stderr]     |         ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.304 INFO [stderr] 
Nov 30 12:17:54.304 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.304 INFO [stderr]    --> src/main.rs:119:13
Nov 30 12:17:54.304 INFO [stderr]     |
Nov 30 12:17:54.304 INFO [stderr] 85  |             'col: for j in 0..3 {
Nov 30 12:17:54.304 INFO [stderr]     |             ---- first declared here
Nov 30 12:17:54.304 INFO [stderr] ...
Nov 30 12:17:54.304 INFO [stderr] 119 |             'col: for j in 0..3 {
Nov 30 12:17:54.304 INFO [stderr]     |             ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.304 INFO [stderr] 
Nov 30 12:17:54.304 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.305 INFO [stderr]    --> src/main.rs:119:13
Nov 30 12:17:54.305 INFO [stderr]     |
Nov 30 12:17:54.305 INFO [stderr] 93  |         'col: for j in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.305 INFO [stderr] ...
Nov 30 12:17:54.305 INFO [stderr] 119 |             'col: for j in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |             ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.305 INFO [stderr] 
Nov 30 12:17:54.305 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.305 INFO [stderr]    --> src/main.rs:127:9
Nov 30 12:17:54.305 INFO [stderr]     |
Nov 30 12:17:54.305 INFO [stderr] 85  |             'col: for j in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |             ---- first declared here
Nov 30 12:17:54.305 INFO [stderr] ...
Nov 30 12:17:54.305 INFO [stderr] 127 |         'col: for j in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |         ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.305 INFO [stderr] 
Nov 30 12:17:54.305 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.305 INFO [stderr]    --> src/main.rs:127:9
Nov 30 12:17:54.305 INFO [stderr]     |
Nov 30 12:17:54.305 INFO [stderr] 93  |         'col: for j in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.305 INFO [stderr] ...
Nov 30 12:17:54.305 INFO [stderr] 127 |         'col: for j in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |         ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.305 INFO [stderr] 
Nov 30 12:17:54.305 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.305 INFO [stderr]    --> src/main.rs:127:9
Nov 30 12:17:54.305 INFO [stderr]     |
Nov 30 12:17:54.305 INFO [stderr] 119 |             'col: for j in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |             ---- first declared here
Nov 30 12:17:54.305 INFO [stderr] ...
Nov 30 12:17:54.305 INFO [stderr] 127 |         'col: for j in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |         ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.305 INFO [stderr] 
Nov 30 12:17:54.305 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.305 INFO [stderr]    --> src/main.rs:128:13
Nov 30 12:17:54.305 INFO [stderr]     |
Nov 30 12:17:54.305 INFO [stderr] 84  |         'row: for i in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.305 INFO [stderr] ...
Nov 30 12:17:54.305 INFO [stderr] 128 |             'row: for i in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |             ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.305 INFO [stderr] 
Nov 30 12:17:54.305 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.305 INFO [stderr]    --> src/main.rs:128:13
Nov 30 12:17:54.305 INFO [stderr]     |
Nov 30 12:17:54.305 INFO [stderr] 94  |             'row: for i in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |             ---- first declared here
Nov 30 12:17:54.305 INFO [stderr] ...
Nov 30 12:17:54.305 INFO [stderr] 128 |             'row: for i in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |             ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.305 INFO [stderr] 
Nov 30 12:17:54.305 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.305 INFO [stderr]    --> src/main.rs:128:13
Nov 30 12:17:54.305 INFO [stderr]     |
Nov 30 12:17:54.305 INFO [stderr] 118 |         'row: for i in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.305 INFO [stderr] ...
Nov 30 12:17:54.305 INFO [stderr] 128 |             'row: for i in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |             ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.305 INFO [stderr] 
Nov 30 12:17:54.305 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.305 INFO [stderr]    --> src/main.rs:190:5
Nov 30 12:17:54.305 INFO [stderr]     |
Nov 30 12:17:54.305 INFO [stderr] 178 |         'col: for j in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.305 INFO [stderr] ...
Nov 30 12:17:54.305 INFO [stderr] 190 |     'col: for j in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |     ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.305 INFO [stderr] 
Nov 30 12:17:54.305 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.305 INFO [stderr]    --> src/main.rs:192:9
Nov 30 12:17:54.305 INFO [stderr]     |
Nov 30 12:17:54.305 INFO [stderr] 176 |     'row: for i in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |     ---- first declared here
Nov 30 12:17:54.305 INFO [stderr] ...
Nov 30 12:17:54.305 INFO [stderr] 192 |         'row: for i in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |         ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.305 INFO [stderr] 
Nov 30 12:17:54.305 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.305 INFO [stderr]    --> src/main.rs:230:5
Nov 30 12:17:54.305 INFO [stderr]     |
Nov 30 12:17:54.305 INFO [stderr] 176 |     'row: for i in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |     ---- first declared here
Nov 30 12:17:54.305 INFO [stderr] ...
Nov 30 12:17:54.305 INFO [stderr] 230 |     'row: for i in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |     ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.305 INFO [stderr] 
Nov 30 12:17:54.305 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.305 INFO [stderr]    --> src/main.rs:230:5
Nov 30 12:17:54.305 INFO [stderr]     |
Nov 30 12:17:54.305 INFO [stderr] 192 |         'row: for i in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.305 INFO [stderr] ...
Nov 30 12:17:54.305 INFO [stderr] 230 |     'row: for i in 0..3 {
Nov 30 12:17:54.305 INFO [stderr]     |     ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.305 INFO [stderr] 
Nov 30 12:17:54.306 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.306 INFO [stderr]    --> src/main.rs:232:9
Nov 30 12:17:54.306 INFO [stderr]     |
Nov 30 12:17:54.306 INFO [stderr] 178 |         'col: for j in 0..3 {
Nov 30 12:17:54.306 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.306 INFO [stderr] ...
Nov 30 12:17:54.306 INFO [stderr] 232 |         'col: for j in 0..3 {
Nov 30 12:17:54.306 INFO [stderr]     |         ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.306 INFO [stderr] 
Nov 30 12:17:54.306 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.306 INFO [stderr]    --> src/main.rs:232:9
Nov 30 12:17:54.306 INFO [stderr]     |
Nov 30 12:17:54.306 INFO [stderr] 190 |     'col: for j in 0..3 {
Nov 30 12:17:54.306 INFO [stderr]     |     ---- first declared here
Nov 30 12:17:54.306 INFO [stderr] ...
Nov 30 12:17:54.306 INFO [stderr] 232 |         'col: for j in 0..3 {
Nov 30 12:17:54.306 INFO [stderr]     |         ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.306 INFO [stderr] 
Nov 30 12:17:54.306 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.306 INFO [stderr]    --> src/main.rs:244:5
Nov 30 12:17:54.306 INFO [stderr]     |
Nov 30 12:17:54.306 INFO [stderr] 178 |         'col: for j in 0..3 {
Nov 30 12:17:54.306 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.306 INFO [stderr] ...
Nov 30 12:17:54.306 INFO [stderr] 244 |     'col: for j in 0..3 {
Nov 30 12:17:54.306 INFO [stderr]     |     ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.306 INFO [stderr] 
Nov 30 12:17:54.306 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.306 INFO [stderr]    --> src/main.rs:244:5
Nov 30 12:17:54.306 INFO [stderr]     |
Nov 30 12:17:54.306 INFO [stderr] 190 |     'col: for j in 0..3 {
Nov 30 12:17:54.306 INFO [stderr]     |     ---- first declared here
Nov 30 12:17:54.306 INFO [stderr] ...
Nov 30 12:17:54.306 INFO [stderr] 244 |     'col: for j in 0..3 {
Nov 30 12:17:54.306 INFO [stderr]     |     ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.306 INFO [stderr] 
Nov 30 12:17:54.306 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.306 INFO [stderr]    --> src/main.rs:244:5
Nov 30 12:17:54.306 INFO [stderr]     |
Nov 30 12:17:54.306 INFO [stderr] 232 |         'col: for j in 0..3 {
Nov 30 12:17:54.306 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.306 INFO [stderr] ...
Nov 30 12:17:54.306 INFO [stderr] 244 |     'col: for j in 0..3 {
Nov 30 12:17:54.306 INFO [stderr]     |     ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.306 INFO [stderr] 
Nov 30 12:17:54.306 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.306 INFO [stderr]    --> src/main.rs:246:9
Nov 30 12:17:54.306 INFO [stderr]     |
Nov 30 12:17:54.306 INFO [stderr] 176 |     'row: for i in 0..3 {
Nov 30 12:17:54.306 INFO [stderr]     |     ---- first declared here
Nov 30 12:17:54.306 INFO [stderr] ...
Nov 30 12:17:54.306 INFO [stderr] 246 |         'row: for i in 0..3 {
Nov 30 12:17:54.306 INFO [stderr]     |         ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.306 INFO [stderr] 
Nov 30 12:17:54.306 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.306 INFO [stderr]    --> src/main.rs:246:9
Nov 30 12:17:54.306 INFO [stderr]     |
Nov 30 12:17:54.306 INFO [stderr] 192 |         'row: for i in 0..3 {
Nov 30 12:17:54.306 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.306 INFO [stderr] ...
Nov 30 12:17:54.306 INFO [stderr] 246 |         'row: for i in 0..3 {
Nov 30 12:17:54.306 INFO [stderr]     |         ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.306 INFO [stderr] 
Nov 30 12:17:54.306 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.306 INFO [stderr]    --> src/main.rs:246:9
Nov 30 12:17:54.306 INFO [stderr]     |
Nov 30 12:17:54.306 INFO [stderr] 230 |     'row: for i in 0..3 {
Nov 30 12:17:54.306 INFO [stderr]     |     ---- first declared here
Nov 30 12:17:54.306 INFO [stderr] ...
Nov 30 12:17:54.306 INFO [stderr] 246 |         'row: for i in 0..3 {
Nov 30 12:17:54.306 INFO [stderr]     |         ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.306 INFO [stderr] 
Nov 30 12:17:54.428 INFO [stderr] warning: value assigned to `cell_count` is never read
Nov 30 12:17:54.428 INFO [stderr]    --> src/main.rs:172:13
Nov 30 12:17:54.428 INFO [stderr]     |
Nov 30 12:17:54.428 INFO [stderr] 172 |     let mut cell_count = 0;
Nov 30 12:17:54.428 INFO [stderr]     |             ^^^^^^^^^^
Nov 30 12:17:54.428 INFO [stderr]     |
Nov 30 12:17:54.428 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Nov 30 12:17:54.428 INFO [stderr] 
Nov 30 12:17:54.448 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 12:17:54.448 INFO [stderr]    --> src/main.rs:186:13
Nov 30 12:17:54.449 INFO [stderr]     |
Nov 30 12:17:54.449 INFO [stderr] 186 |             board.set_o(empty_cell);
Nov 30 12:17:54.449 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 12:17:54.449 INFO [stderr]     |
Nov 30 12:17:54.449 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 30 12:17:54.449 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 12:17:54.449 INFO [stderr] 
Nov 30 12:17:54.449 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 12:17:54.449 INFO [stderr]    --> src/main.rs:200:13
Nov 30 12:17:54.449 INFO [stderr]     |
Nov 30 12:17:54.449 INFO [stderr] 200 |             board.set_o(empty_cell);
Nov 30 12:17:54.449 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 12:17:54.449 INFO [stderr]     |
Nov 30 12:17:54.449 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 12:17:54.449 INFO [stderr] 
Nov 30 12:17:54.449 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 12:17:54.449 INFO [stderr]    --> src/main.rs:213:9
Nov 30 12:17:54.449 INFO [stderr]     |
Nov 30 12:17:54.449 INFO [stderr] 213 |         board.set_o(empty_cell);
Nov 30 12:17:54.449 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 12:17:54.449 INFO [stderr]     |
Nov 30 12:17:54.449 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 12:17:54.449 INFO [stderr] 
Nov 30 12:17:54.449 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 12:17:54.449 INFO [stderr]    --> src/main.rs:225:9
Nov 30 12:17:54.449 INFO [stderr]     |
Nov 30 12:17:54.449 INFO [stderr] 225 |         board.set_o(empty_cell);
Nov 30 12:17:54.449 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 12:17:54.449 INFO [stderr]     |
Nov 30 12:17:54.449 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 12:17:54.449 INFO [stderr] 
Nov 30 12:17:54.449 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 12:17:54.449 INFO [stderr]    --> src/main.rs:240:13
Nov 30 12:17:54.449 INFO [stderr]     |
Nov 30 12:17:54.449 INFO [stderr] 240 |             board.set_o(empty_cell);
Nov 30 12:17:54.449 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 12:17:54.449 INFO [stderr]     |
Nov 30 12:17:54.449 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 12:17:54.449 INFO [stderr] 
Nov 30 12:17:54.449 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 12:17:54.449 INFO [stderr]    --> src/main.rs:254:13
Nov 30 12:17:54.449 INFO [stderr]     |
Nov 30 12:17:54.449 INFO [stderr] 254 |             board.set_o(empty_cell);
Nov 30 12:17:54.449 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 12:17:54.449 INFO [stderr]     |
Nov 30 12:17:54.449 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 12:17:54.449 INFO [stderr] 
Nov 30 12:17:54.449 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 12:17:54.449 INFO [stderr]    --> src/main.rs:267:9
Nov 30 12:17:54.449 INFO [stderr]     |
Nov 30 12:17:54.449 INFO [stderr] 267 |         board.set_o(empty_cell);
Nov 30 12:17:54.449 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 12:17:54.449 INFO [stderr]     |
Nov 30 12:17:54.449 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 12:17:54.449 INFO [stderr] 
Nov 30 12:17:54.449 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 12:17:54.449 INFO [stderr]    --> src/main.rs:279:9
Nov 30 12:17:54.449 INFO [stderr]     |
Nov 30 12:17:54.449 INFO [stderr] 279 |         board.set_o(empty_cell);
Nov 30 12:17:54.449 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 12:17:54.449 INFO [stderr]     |
Nov 30 12:17:54.449 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 12:17:54.449 INFO [stderr] 
Nov 30 12:17:54.476 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.476 INFO [stderr]   --> src/main.rs:93:9
Nov 30 12:17:54.476 INFO [stderr]    |
Nov 30 12:17:54.476 INFO [stderr] 85 |             'col: for j in 0..3 {
Nov 30 12:17:54.476 INFO [stderr]    |             ---- first declared here
Nov 30 12:17:54.476 INFO [stderr] ...
Nov 30 12:17:54.476 INFO [stderr] 93 |         'col: for j in 0..3 {
Nov 30 12:17:54.476 INFO [stderr]    |         ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.476 INFO [stderr] 
Nov 30 12:17:54.476 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.476 INFO [stderr]   --> src/main.rs:94:13
Nov 30 12:17:54.476 INFO [stderr]    |
Nov 30 12:17:54.476 INFO [stderr] 84 |         'row: for i in 0..3 {
Nov 30 12:17:54.476 INFO [stderr]    |         ---- first declared here
Nov 30 12:17:54.476 INFO [stderr] ...
Nov 30 12:17:54.476 INFO [stderr] 94 |             'row: for i in 0..3 {
Nov 30 12:17:54.476 INFO [stderr]    |             ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.476 INFO [stderr] 
Nov 30 12:17:54.476 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.476 INFO [stderr]    --> src/main.rs:118:9
Nov 30 12:17:54.476 INFO [stderr]     |
Nov 30 12:17:54.476 INFO [stderr] 84  |         'row: for i in 0..3 {
Nov 30 12:17:54.476 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.476 INFO [stderr] ...
Nov 30 12:17:54.476 INFO [stderr] 118 |         'row: for i in 0..3 {
Nov 30 12:17:54.476 INFO [stderr]     |         ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.476 INFO [stderr] 
Nov 30 12:17:54.476 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.476 INFO [stderr]    --> src/main.rs:118:9
Nov 30 12:17:54.476 INFO [stderr]     |
Nov 30 12:17:54.476 INFO [stderr] 94  |             'row: for i in 0..3 {
Nov 30 12:17:54.476 INFO [stderr]     |             ---- first declared here
Nov 30 12:17:54.476 INFO [stderr] ...
Nov 30 12:17:54.476 INFO [stderr] 118 |         'row: for i in 0..3 {
Nov 30 12:17:54.476 INFO [stderr]     |         ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.476 INFO [stderr] 
Nov 30 12:17:54.476 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.476 INFO [stderr]    --> src/main.rs:119:13
Nov 30 12:17:54.476 INFO [stderr]     |
Nov 30 12:17:54.476 INFO [stderr] 85  |             'col: for j in 0..3 {
Nov 30 12:17:54.476 INFO [stderr]     |             ---- first declared here
Nov 30 12:17:54.476 INFO [stderr] ...
Nov 30 12:17:54.476 INFO [stderr] 119 |             'col: for j in 0..3 {
Nov 30 12:17:54.476 INFO [stderr]     |             ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.476 INFO [stderr] 
Nov 30 12:17:54.476 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.476 INFO [stderr]    --> src/main.rs:119:13
Nov 30 12:17:54.476 INFO [stderr]     |
Nov 30 12:17:54.476 INFO [stderr] 93  |         'col: for j in 0..3 {
Nov 30 12:17:54.476 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.476 INFO [stderr] ...
Nov 30 12:17:54.476 INFO [stderr] 119 |             'col: for j in 0..3 {
Nov 30 12:17:54.476 INFO [stderr]     |             ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.476 INFO [stderr] 
Nov 30 12:17:54.476 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.476 INFO [stderr]    --> src/main.rs:127:9
Nov 30 12:17:54.476 INFO [stderr]     |
Nov 30 12:17:54.477 INFO [stderr] 85  |             'col: for j in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |             ---- first declared here
Nov 30 12:17:54.477 INFO [stderr] ...
Nov 30 12:17:54.477 INFO [stderr] 127 |         'col: for j in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |         ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.477 INFO [stderr] 
Nov 30 12:17:54.477 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.477 INFO [stderr]    --> src/main.rs:127:9
Nov 30 12:17:54.477 INFO [stderr]     |
Nov 30 12:17:54.477 INFO [stderr] 93  |         'col: for j in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.477 INFO [stderr] ...
Nov 30 12:17:54.477 INFO [stderr] 127 |         'col: for j in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |         ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.477 INFO [stderr] 
Nov 30 12:17:54.477 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.477 INFO [stderr]    --> src/main.rs:127:9
Nov 30 12:17:54.477 INFO [stderr]     |
Nov 30 12:17:54.477 INFO [stderr] 119 |             'col: for j in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |             ---- first declared here
Nov 30 12:17:54.477 INFO [stderr] ...
Nov 30 12:17:54.477 INFO [stderr] 127 |         'col: for j in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |         ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.477 INFO [stderr] 
Nov 30 12:17:54.477 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.477 INFO [stderr]    --> src/main.rs:128:13
Nov 30 12:17:54.477 INFO [stderr]     |
Nov 30 12:17:54.477 INFO [stderr] 84  |         'row: for i in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.477 INFO [stderr] ...
Nov 30 12:17:54.477 INFO [stderr] 128 |             'row: for i in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |             ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.477 INFO [stderr] 
Nov 30 12:17:54.477 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.477 INFO [stderr]    --> src/main.rs:128:13
Nov 30 12:17:54.477 INFO [stderr]     |
Nov 30 12:17:54.477 INFO [stderr] 94  |             'row: for i in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |             ---- first declared here
Nov 30 12:17:54.477 INFO [stderr] ...
Nov 30 12:17:54.477 INFO [stderr] 128 |             'row: for i in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |             ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.477 INFO [stderr] 
Nov 30 12:17:54.477 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.477 INFO [stderr]    --> src/main.rs:128:13
Nov 30 12:17:54.477 INFO [stderr]     |
Nov 30 12:17:54.477 INFO [stderr] 118 |         'row: for i in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.477 INFO [stderr] ...
Nov 30 12:17:54.477 INFO [stderr] 128 |             'row: for i in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |             ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.477 INFO [stderr] 
Nov 30 12:17:54.477 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.477 INFO [stderr]    --> src/main.rs:190:5
Nov 30 12:17:54.477 INFO [stderr]     |
Nov 30 12:17:54.477 INFO [stderr] 178 |         'col: for j in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.477 INFO [stderr] ...
Nov 30 12:17:54.477 INFO [stderr] 190 |     'col: for j in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |     ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.477 INFO [stderr] 
Nov 30 12:17:54.477 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.477 INFO [stderr]    --> src/main.rs:192:9
Nov 30 12:17:54.477 INFO [stderr]     |
Nov 30 12:17:54.477 INFO [stderr] 176 |     'row: for i in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |     ---- first declared here
Nov 30 12:17:54.477 INFO [stderr] ...
Nov 30 12:17:54.477 INFO [stderr] 192 |         'row: for i in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |         ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.477 INFO [stderr] 
Nov 30 12:17:54.477 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.477 INFO [stderr]    --> src/main.rs:230:5
Nov 30 12:17:54.477 INFO [stderr]     |
Nov 30 12:17:54.477 INFO [stderr] 176 |     'row: for i in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |     ---- first declared here
Nov 30 12:17:54.477 INFO [stderr] ...
Nov 30 12:17:54.477 INFO [stderr] 230 |     'row: for i in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |     ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.477 INFO [stderr] 
Nov 30 12:17:54.477 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.477 INFO [stderr]    --> src/main.rs:230:5
Nov 30 12:17:54.477 INFO [stderr]     |
Nov 30 12:17:54.477 INFO [stderr] 192 |         'row: for i in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.477 INFO [stderr] ...
Nov 30 12:17:54.477 INFO [stderr] 230 |     'row: for i in 0..3 {
Nov 30 12:17:54.477 INFO [stderr]     |     ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.477 INFO [stderr] 
Nov 30 12:17:54.477 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.478 INFO [stderr]    --> src/main.rs:232:9
Nov 30 12:17:54.478 INFO [stderr]     |
Nov 30 12:17:54.478 INFO [stderr] 178 |         'col: for j in 0..3 {
Nov 30 12:17:54.478 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.478 INFO [stderr] ...
Nov 30 12:17:54.478 INFO [stderr] 232 |         'col: for j in 0..3 {
Nov 30 12:17:54.478 INFO [stderr]     |         ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.478 INFO [stderr] 
Nov 30 12:17:54.478 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.478 INFO [stderr]    --> src/main.rs:232:9
Nov 30 12:17:54.478 INFO [stderr]     |
Nov 30 12:17:54.478 INFO [stderr] 190 |     'col: for j in 0..3 {
Nov 30 12:17:54.478 INFO [stderr]     |     ---- first declared here
Nov 30 12:17:54.478 INFO [stderr] ...
Nov 30 12:17:54.478 INFO [stderr] 232 |         'col: for j in 0..3 {
Nov 30 12:17:54.478 INFO [stderr]     |         ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.478 INFO [stderr] 
Nov 30 12:17:54.478 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.478 INFO [stderr]    --> src/main.rs:244:5
Nov 30 12:17:54.478 INFO [stderr]     |
Nov 30 12:17:54.478 INFO [stderr] 178 |         'col: for j in 0..3 {
Nov 30 12:17:54.478 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.478 INFO [stderr] ...
Nov 30 12:17:54.478 INFO [stderr] 244 |     'col: for j in 0..3 {
Nov 30 12:17:54.478 INFO [stderr]     |     ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.478 INFO [stderr] 
Nov 30 12:17:54.478 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.478 INFO [stderr]    --> src/main.rs:244:5
Nov 30 12:17:54.478 INFO [stderr]     |
Nov 30 12:17:54.478 INFO [stderr] 190 |     'col: for j in 0..3 {
Nov 30 12:17:54.478 INFO [stderr]     |     ---- first declared here
Nov 30 12:17:54.478 INFO [stderr] ...
Nov 30 12:17:54.478 INFO [stderr] 244 |     'col: for j in 0..3 {
Nov 30 12:17:54.478 INFO [stderr]     |     ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.478 INFO [stderr] 
Nov 30 12:17:54.478 INFO [stderr] warning: label name `'col` shadows a label name that is already in scope
Nov 30 12:17:54.478 INFO [stderr]    --> src/main.rs:244:5
Nov 30 12:17:54.478 INFO [stderr]     |
Nov 30 12:17:54.478 INFO [stderr] 232 |         'col: for j in 0..3 {
Nov 30 12:17:54.478 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.478 INFO [stderr] ...
Nov 30 12:17:54.478 INFO [stderr] 244 |     'col: for j in 0..3 {
Nov 30 12:17:54.478 INFO [stderr]     |     ^^^^ lifetime 'col already in scope
Nov 30 12:17:54.478 INFO [stderr] 
Nov 30 12:17:54.478 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.478 INFO [stderr]    --> src/main.rs:246:9
Nov 30 12:17:54.478 INFO [stderr]     |
Nov 30 12:17:54.478 INFO [stderr] 176 |     'row: for i in 0..3 {
Nov 30 12:17:54.478 INFO [stderr]     |     ---- first declared here
Nov 30 12:17:54.478 INFO [stderr] ...
Nov 30 12:17:54.478 INFO [stderr] 246 |         'row: for i in 0..3 {
Nov 30 12:17:54.478 INFO [stderr]     |         ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.478 INFO [stderr] 
Nov 30 12:17:54.478 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.478 INFO [stderr]    --> src/main.rs:246:9
Nov 30 12:17:54.478 INFO [stderr]     |
Nov 30 12:17:54.478 INFO [stderr] 192 |         'row: for i in 0..3 {
Nov 30 12:17:54.478 INFO [stderr]     |         ---- first declared here
Nov 30 12:17:54.478 INFO [stderr] ...
Nov 30 12:17:54.478 INFO [stderr] 246 |         'row: for i in 0..3 {
Nov 30 12:17:54.478 INFO [stderr]     |         ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.478 INFO [stderr] 
Nov 30 12:17:54.478 INFO [stderr] warning: label name `'row` shadows a label name that is already in scope
Nov 30 12:17:54.478 INFO [stderr]    --> src/main.rs:246:9
Nov 30 12:17:54.478 INFO [stderr]     |
Nov 30 12:17:54.478 INFO [stderr] 230 |     'row: for i in 0..3 {
Nov 30 12:17:54.478 INFO [stderr]     |     ---- first declared here
Nov 30 12:17:54.478 INFO [stderr] ...
Nov 30 12:17:54.478 INFO [stderr] 246 |         'row: for i in 0..3 {
Nov 30 12:17:54.478 INFO [stderr]     |         ^^^^ lifetime 'row already in scope
Nov 30 12:17:54.478 INFO [stderr] 
Nov 30 12:17:54.611 INFO [stderr] warning: value assigned to `cell_count` is never read
Nov 30 12:17:54.611 INFO [stderr]    --> src/main.rs:172:13
Nov 30 12:17:54.611 INFO [stderr]     |
Nov 30 12:17:54.611 INFO [stderr] 172 |     let mut cell_count = 0;
Nov 30 12:17:54.611 INFO [stderr]     |             ^^^^^^^^^^
Nov 30 12:17:54.611 INFO [stderr]     |
Nov 30 12:17:54.611 INFO [stderr]     = note: #[warn(unused_assignments)] on by default
Nov 30 12:17:54.611 INFO [stderr] 
Nov 30 12:17:54.645 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 12:17:54.645 INFO [stderr]    --> src/main.rs:186:13
Nov 30 12:17:54.645 INFO [stderr]     |
Nov 30 12:17:54.645 INFO [stderr] 186 |             board.set_o(empty_cell);
Nov 30 12:17:54.645 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 12:17:54.645 INFO [stderr]     |
Nov 30 12:17:54.645 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 30 12:17:54.645 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 12:17:54.645 INFO [stderr] 
Nov 30 12:17:54.645 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 12:17:54.645 INFO [stderr]    --> src/main.rs:200:13
Nov 30 12:17:54.645 INFO [stderr]     |
Nov 30 12:17:54.645 INFO [stderr] 200 |             board.set_o(empty_cell);
Nov 30 12:17:54.645 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 12:17:54.645 INFO [stderr]     |
Nov 30 12:17:54.645 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 12:17:54.645 INFO [stderr] 
Nov 30 12:17:54.645 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 12:17:54.645 INFO [stderr]    --> src/main.rs:213:9
Nov 30 12:17:54.645 INFO [stderr]     |
Nov 30 12:17:54.645 INFO [stderr] 213 |         board.set_o(empty_cell);
Nov 30 12:17:54.645 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 12:17:54.645 INFO [stderr]     |
Nov 30 12:17:54.646 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 12:17:54.646 INFO [stderr] 
Nov 30 12:17:54.646 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 12:17:54.646 INFO [stderr]    --> src/main.rs:225:9
Nov 30 12:17:54.646 INFO [stderr]     |
Nov 30 12:17:54.646 INFO [stderr] 225 |         board.set_o(empty_cell);
Nov 30 12:17:54.646 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 12:17:54.646 INFO [stderr]     |
Nov 30 12:17:54.646 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 12:17:54.646 INFO [stderr] 
Nov 30 12:17:54.646 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 12:17:54.646 INFO [stderr]    --> src/main.rs:240:13
Nov 30 12:17:54.646 INFO [stderr]     |
Nov 30 12:17:54.646 INFO [stderr] 240 |             board.set_o(empty_cell);
Nov 30 12:17:54.646 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 12:17:54.646 INFO [stderr]     |
Nov 30 12:17:54.646 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 12:17:54.646 INFO [stderr] 
Nov 30 12:17:54.646 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 12:17:54.646 INFO [stderr]    --> src/main.rs:254:13
Nov 30 12:17:54.646 INFO [stderr]     |
Nov 30 12:17:54.646 INFO [stderr] 254 |             board.set_o(empty_cell);
Nov 30 12:17:54.646 INFO [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 12:17:54.646 INFO [stderr]     |
Nov 30 12:17:54.646 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 12:17:54.646 INFO [stderr] 
Nov 30 12:17:54.646 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 12:17:54.646 INFO [stderr]    --> src/main.rs:267:9
Nov 30 12:17:54.646 INFO [stderr]     |
Nov 30 12:17:54.646 INFO [stderr] 267 |         board.set_o(empty_cell);
Nov 30 12:17:54.646 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 12:17:54.646 INFO [stderr]     |
Nov 30 12:17:54.646 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 12:17:54.646 INFO [stderr] 
Nov 30 12:17:54.646 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 30 12:17:54.646 INFO [stderr]    --> src/main.rs:279:9
Nov 30 12:17:54.646 INFO [stderr]     |
Nov 30 12:17:54.646 INFO [stderr] 279 |         board.set_o(empty_cell);
Nov 30 12:17:54.646 INFO [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 30 12:17:54.646 INFO [stderr]     |
Nov 30 12:17:54.646 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 30 12:17:54.646 INFO [stderr] 
Nov 30 12:17:54.662 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
Nov 30 12:17:54.664 INFO [stderr] su: No module specific data is present
Nov 30 12:17:55.061 INFO running `"docker" "inspect" "88c8c028f27b37e319aba1d8208636d5bb59c9bc07f3e795410daf8d1c651dd4"`
Nov 30 12:17:55.205 INFO running `"docker" "rm" "-f" "88c8c028f27b37e319aba1d8208636d5bb59c9bc07f3e795410daf8d1c651dd4"`
Nov 30 12:17:55.344 INFO [stdout] 88c8c028f27b37e319aba1d8208636d5bb59c9bc07f3e795410daf8d1c651dd4