[INFO] cloning repository https://github.com/aishsingh/nine-mens-morris
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aishsingh/nine-mens-morris" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faishsingh%2Fnine-mens-morris", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faishsingh%2Fnine-mens-morris'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 057e60876ac6d8a707f59aa69650745c7a1ebc5c
[INFO] testing aishsingh/nine-mens-morris against 1.47.0 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faishsingh%2Fnine-mens-morris" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aishsingh/nine-mens-morris on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aishsingh/nine-mens-morris
[INFO] finished tweaking git repo https://github.com/aishsingh/nine-mens-morris
[INFO] tweaked toml for git repo https://github.com/aishsingh/nine-mens-morris written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/aishsingh/nine-mens-morris already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] error: the lock file /workspace/builds/worker-12/source/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] [stderr] If you want to try to generate the lock file without accessing the network, use the --offline flag.
[INFO] the lockfile is outdated, regenerating it
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 077708f875060d85087aa69d655e035e1132f5f3e04648ff5afa3657a568177b
[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" "077708f875060d85087aa69d655e035e1132f5f3e04648ff5afa3657a568177b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "077708f875060d85087aa69d655e035e1132f5f3e04648ff5afa3657a568177b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "077708f875060d85087aa69d655e035e1132f5f3e04648ff5afa3657a568177b", kill_on_drop: false }`
[INFO] [stdout] 077708f875060d85087aa69d655e035e1132f5f3e04648ff5afa3657a568177b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.47.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 56e724f5b33a522020d49214d34e71ecd188aadded3db2400530553a38380abf
[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" "56e724f5b33a522020d49214d34e71ecd188aadded3db2400530553a38380abf", kill_on_drop: false }`
[INFO] [stderr]    Compiling sdl2-sys v0.19.0
[INFO] [stderr]    Compiling bitflags v0.6.0
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling sdl2 v0.19.0
[INFO] [stderr]    Compiling sdl2_ttf v0.19.0
[INFO] [stderr]    Compiling nine-mens-morris v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `sdl2::pixels::Color`
[INFO] [stdout]  --> src/piece.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use sdl2::pixels::Color;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `placed` should have an upper camel case name
[INFO] [stdout]   --> src/piece.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     placed { p: Piece },
[INFO] [stdout]    |     ^^^^^^ help: convert the identifier to upper camel case: `Placed`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `empty` should have an upper camel case name
[INFO] [stdout]   --> src/piece.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout] 16 |     empty
[INFO] [stdout]    |     ^^^^^ help: convert the identifier to upper camel case: `Empty`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `completed` should have an upper camel case name
[INFO] [stdout]   --> src/action.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     completed,
[INFO] [stdout]    |     ^^^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Completed`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `stopped` should have an upper camel case name
[INFO] [stdout]   --> src/action.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     stopped,
[INFO] [stdout]    |     ^^^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Stopped`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `mill_detected` should have an upper camel case name
[INFO] [stdout]   --> src/action.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     mill_detected
[INFO] [stdout]    |     ^^^^^^^^^^^^^ help: convert the identifier to upper camel case: `MillDetected`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:73:40
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 Event::MouseButtonDown{x, y, ..} => {
[INFO] [stdout]    |                                        ^ help: try ignoring the field: `x: _`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/main.rs:73:43
[INFO] [stdout]    |
[INFO] [stdout] 73 |                 Event::MouseButtonDown{x, y, ..} => {
[INFO] [stdout]    |                                           ^ help: try ignoring the field: `y: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/main.rs:77:36
[INFO] [stdout]    |
[INFO] [stdout] 77 |                 Event::MouseMotion{x, y, ..} => {
[INFO] [stdout]    |                                    ^ help: try ignoring the field: `x: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `y`
[INFO] [stdout]   --> src/main.rs:77:39
[INFO] [stdout]    |
[INFO] [stdout] 77 |                 Event::MouseMotion{x, y, ..} => {
[INFO] [stdout]    |                                       ^ help: try ignoring the field: `y: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/action.rs:50:26
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn move_piece(&self, p: &piece::Piece) -> ActionResult {
[INFO] [stdout]    |                          ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `p`
[INFO] [stdout]   --> src/action.rs:55:26
[INFO] [stdout]    |
[INFO] [stdout] 55 |     fn jump_piece(&self, p: &piece::Piece) -> ActionResult {
[INFO] [stdout]    |                          ^ help: if this is intentional, prefix it with an underscore: `_p`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:231:9
[INFO] [stdout]     |
[INFO] [stdout] 231 |     let mut renderer = window.renderer().build().unwrap();
[INFO] [stdout]     |         ----^^^^^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:234:9
[INFO] [stdout]     |
[INFO] [stdout] 234 |     let mut font = ttf_context.load_font(Path::new("font/Arvo-Regular.ttf"), 24).unwrap();
[INFO] [stdout]     |         ----^^^^
[INFO] [stdout]     |         |
[INFO] [stdout]     |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `remove_piece`
[INFO] [stdout]   --> src/player.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 30 |     pub fn remove_piece(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:145:17
[INFO] [stdout]     |
[INFO] [stdout] 145 |                 self.sdl_renderer.fill_rect(Rect::new(board[i][j][0], board[i][j][1], 5, 5));
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:150:9
[INFO] [stdout]     |
[INFO] [stdout] 150 |         self.sdl_renderer.draw_line(Point::new(2+board[0][3][0], 2+board[0][3][1]), Point::new(2+board[2][3][0], 2+board[2][3][1]));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:151:9
[INFO] [stdout]     |
[INFO] [stdout] 151 |         self.sdl_renderer.draw_line(Point::new(2+board[4][3][0], 2+board[4][3][1]), Point::new(2+board[6][3][0], 2+board[6][3][1]));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:152:9
[INFO] [stdout]     |
[INFO] [stdout] 152 |         self.sdl_renderer.draw_line(Point::new(2+board[3][0][0], 2+board[3][0][1]), Point::new(2+board[3][2][0], 2+board[3][2][1]));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:153:9
[INFO] [stdout]     |
[INFO] [stdout] 153 |         self.sdl_renderer.draw_line(Point::new(2+board[3][4][0], 2+board[3][4][1]), Point::new(2+board[3][6][0], 2+board[3][6][1]));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 |         self.sdl_renderer.draw_line(Point::new(2+board[0][0][0], 2+board[0][0][1]), Point::new(2+board[0][6][0], 2+board[0][6][1]));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:157:9
[INFO] [stdout]     |
[INFO] [stdout] 157 |         self.sdl_renderer.draw_line(Point::new(2+board[6][0][0], 2+board[6][0][1]), Point::new(2+board[6][6][0], 2+board[6][6][1]));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:158:9
[INFO] [stdout]     |
[INFO] [stdout] 158 |         self.sdl_renderer.draw_line(Point::new(2+board[0][0][0], 2+board[0][0][1]), Point::new(2+board[6][0][0], 2+board[6][0][1]));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:159:9
[INFO] [stdout]     |
[INFO] [stdout] 159 |         self.sdl_renderer.draw_line(Point::new(2+board[0][6][0], 2+board[0][6][1]), Point::new(2+board[6][6][0], 2+board[6][6][1]));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         self.sdl_renderer.draw_line(Point::new(2+board[1][1][0], 2+board[1][1][1]), Point::new(2+board[1][5][0], 2+board[1][5][1]));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:163:9
[INFO] [stdout]     |
[INFO] [stdout] 163 |         self.sdl_renderer.draw_line(Point::new(2+board[5][1][0], 2+board[5][1][1]), Point::new(2+board[5][5][0], 2+board[5][5][1]));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:164:9
[INFO] [stdout]     |
[INFO] [stdout] 164 |         self.sdl_renderer.draw_line(Point::new(2+board[1][1][0], 2+board[1][1][1]), Point::new(2+board[5][1][0], 2+board[5][1][1]));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:165:9
[INFO] [stdout]     |
[INFO] [stdout] 165 |         self.sdl_renderer.draw_line(Point::new(2+board[1][5][0], 2+board[1][5][1]), Point::new(2+board[5][5][0], 2+board[5][5][1]));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:168:9
[INFO] [stdout]     |
[INFO] [stdout] 168 |         self.sdl_renderer.draw_line(Point::new(2+board[2][2][0], 2+board[2][2][1]), Point::new(2+board[2][4][0], 2+board[2][4][1]));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:169:9
[INFO] [stdout]     |
[INFO] [stdout] 169 |         self.sdl_renderer.draw_line(Point::new(2+board[4][2][0], 2+board[4][2][1]), Point::new(2+board[4][4][0], 2+board[4][4][1]));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:170:9
[INFO] [stdout]     |
[INFO] [stdout] 170 |         self.sdl_renderer.draw_line(Point::new(2+board[2][2][0], 2+board[2][2][1]), Point::new(2+board[4][2][0], 2+board[4][2][1]));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]    --> src/main.rs:171:9
[INFO] [stdout]     |
[INFO] [stdout] 171 |         self.sdl_renderer.draw_line(Point::new(2+board[2][4][0], 2+board[2][4][1]), Point::new(2+board[4][4][0], 2+board[4][4][1]));
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/piece.rs:22:9
[INFO] [stdout]    |
[INFO] [stdout] 22 |         renderer.fill_rect(Rect::new(self.x - (30/2), self.y - (30/2), 30, 30));
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit code: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/nine_mens_morris-d97e3a1dc0e2a6d5.nine_mens_morris.1lawx6t1-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/nine_mens_morris-d97e3a1dc0e2a6d5.nine_mens_morris.1lawx6t1-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/nine_mens_morris-d97e3a1dc0e2a6d5.nine_mens_morris.1lawx6t1-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/nine_mens_morris-d97e3a1dc0e2a6d5.nine_mens_morris.1lawx6t1-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/nine_mens_morris-d97e3a1dc0e2a6d5.nine_mens_morris.1lawx6t1-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/nine_mens_morris-d97e3a1dc0e2a6d5.nine_mens_morris.1lawx6t1-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/nine_mens_morris-d97e3a1dc0e2a6d5.nine_mens_morris.1lawx6t1-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/nine_mens_morris-d97e3a1dc0e2a6d5.nine_mens_morris.1lawx6t1-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/nine_mens_morris-d97e3a1dc0e2a6d5.nine_mens_morris.1lawx6t1-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/nine_mens_morris-d97e3a1dc0e2a6d5.nine_mens_morris.1lawx6t1-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/nine_mens_morris-d97e3a1dc0e2a6d5.nine_mens_morris.1lawx6t1-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/nine_mens_morris-d97e3a1dc0e2a6d5.nine_mens_morris.1lawx6t1-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/nine_mens_morris-d97e3a1dc0e2a6d5.nine_mens_morris.1lawx6t1-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/nine_mens_morris-d97e3a1dc0e2a6d5.nine_mens_morris.1lawx6t1-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/nine_mens_morris-d97e3a1dc0e2a6d5.nine_mens_morris.1lawx6t1-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/nine_mens_morris-d97e3a1dc0e2a6d5.nine_mens_morris.1lawx6t1-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/nine_mens_morris-d97e3a1dc0e2a6d5" "/opt/rustwide/target/debug/deps/nine_mens_morris-d97e3a1dc0e2a6d5.58es4yjium13ltar.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libsdl2_ttf-510a850715c6ccb3.rlib" "/opt/rustwide/target/debug/deps/libbitflags-1aab0d2bf34d66cc.rlib" "/opt/rustwide/target/debug/deps/libsdl2-374cfc8155e17938.rlib" "/opt/rustwide/target/debug/deps/librand-585d60ef731bf42f.rlib" "/opt/rustwide/target/debug/deps/libsdl2_sys-37c2ee91732829a3.rlib" "/opt/rustwide/target/debug/deps/libbitflags-fbadfc843aa7a603.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-4b460a565d885068.rlib" "/opt/rustwide/target/debug/deps/libnum-2bf1a1d086d45002.rlib" "/opt/rustwide/target/debug/deps/libnum_rational-00b3387f4215641a.rlib" "/opt/rustwide/target/debug/deps/libnum_bigint-8715fdc18b3f6f3b.rlib" "/opt/rustwide/target/debug/deps/librand-148ff1a0c46e003f.rlib" "/opt/rustwide/target/debug/deps/liblibc-0a43f320b0d2a047.rlib" "/opt/rustwide/target/debug/deps/libnum_complex-cb16313afbfd36e1.rlib" "/opt/rustwide/target/debug/deps/librustc_serialize-b94f9e5a325066ba.rlib" "/opt/rustwide/target/debug/deps/libnum_iter-6d8d1064c87aae83.rlib" "/opt/rustwide/target/debug/deps/libnum_integer-2afc3791b2473ea0.rlib" "/opt/rustwide/target/debug/deps/libnum_traits-b647543940554833.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-f14aca24435a5414.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-48d342a8b48d1d01.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-14bc0820888c8eb3.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-9cbd9e217bff06bc.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-31826136df98934e.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-075976a117c8fd5d.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-2d5cbedfbf17a011.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-0474372ff08c5319.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-d437c34460d2315a.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-fb61ed1b8cc4de79.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-bf76d1b643bfc9f0.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-a1b53aa7fddcf418.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-28585e57fac45c73.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-64801769bc15ab28.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-541997b56bb98660.rlib" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-cdea3c81adab3d12.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.47.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-cd9f15a39fb65cbc.rlib" "-Wl,-Bdynamic" "-lSDL2_ttf" "-lSDL2" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lSDL2_ttf
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 33 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `nine-mens-morris`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "56e724f5b33a522020d49214d34e71ecd188aadded3db2400530553a38380abf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "56e724f5b33a522020d49214d34e71ecd188aadded3db2400530553a38380abf", kill_on_drop: false }`
[INFO] [stdout] 56e724f5b33a522020d49214d34e71ecd188aadded3db2400530553a38380abf
