[INFO] cloning repository https://github.com/mylesmegyesi/tic-tac-toe-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mylesmegyesi/tic-tac-toe-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmylesmegyesi%2Ftic-tac-toe-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmylesmegyesi%2Ftic-tac-toe-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 41a5375fab35295be839def6bb1d1a6fc521686e
[INFO] checking mylesmegyesi/tic-tac-toe-rust against try#87f2ecc56b5f6032b075c8934ebc77f28d57183c for pr-148190
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmylesmegyesi%2Ftic-tac-toe-rust" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mylesmegyesi/tic-tac-toe-rust
[INFO] finished tweaking git repo https://github.com/mylesmegyesi/tic-tac-toe-rust
[INFO] tweaked toml for git repo https://github.com/mylesmegyesi/tic-tac-toe-rust written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mylesmegyesi/tic-tac-toe-rust on toolchain 87f2ecc56b5f6032b075c8934ebc77f28d57183c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+87f2ecc56b5f6032b075c8934ebc77f28d57183c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mylesmegyesi/tic-tac-toe-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+87f2ecc56b5f6032b075c8934ebc77f28d57183c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] [stdout] 5fb30a0284e2f59c6d89b241b1e3445c7cac0cde71984a3dac1cf4564f43f1e5
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[INFO] running `Command { std: "docker" "inspect" "5fb30a0284e2f59c6d89b241b1e3445c7cac0cde71984a3dac1cf4564f43f1e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fb30a0284e2f59c6d89b241b1e3445c7cac0cde71984a3dac1cf4564f43f1e5", kill_on_drop: false }`
[INFO] [stdout] 5fb30a0284e2f59c6d89b241b1e3445c7cac0cde71984a3dac1cf4564f43f1e5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+87f2ecc56b5f6032b075c8934ebc77f28d57183c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ca2724ed26a06602bdf7b83f458764a5b5df79858c7830f15f74769f6dfe822d
[INFO] running `Command { std: "docker" "start" "-a" "ca2724ed26a06602bdf7b83f458764a5b5df79858c7830f15f74769f6dfe822d", kill_on_drop: false }`
[INFO] [stderr]     Checking tic-tac-toe-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/board.rs:12:25
[INFO] [stdout]    |
[INFO] [stdout] 12 |     occupant: Option<Rc<Player>>,
[INFO] [stdout]    |                         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 |     occupant: Option<Rc<dyn Player>>,
[INFO] [stdout]    |                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/rules.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Win(Rc<Player>),
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Win(Rc<dyn Player>),
[INFO] [stdout]   |            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/player.rs:7:49
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn get_move<'board>(&self, other_player: Rc<Player>, board: &'board Board) -> &'board CellReference;
[INFO] [stdout]   |                                                 ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn get_move<'board>(&self, other_player: Rc<dyn Player>, board: &'board Board) -> &'board CellReference;
[INFO] [stdout]   |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/player.rs:8:30
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn to_boxed(self) -> Box<Player>;
[INFO] [stdout]   |                              ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn to_boxed(self) -> Box<dyn Player>;
[INFO] [stdout]   |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/board.rs:12:25
[INFO] [stdout]    |
[INFO] [stdout] 12 |     occupant: Option<Rc<Player>>,
[INFO] [stdout]    |                         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 |     occupant: Option<Rc<dyn Player>>,
[INFO] [stdout]    |                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/rules.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Win(Rc<Player>),
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 |     Win(Rc<dyn Player>),
[INFO] [stdout]   |            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/player.rs:7:49
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn get_move<'board>(&self, other_player: Rc<Player>, board: &'board Board) -> &'board CellReference;
[INFO] [stdout]   |                                                 ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     fn get_move<'board>(&self, other_player: Rc<dyn Player>, board: &'board Board) -> &'board CellReference;
[INFO] [stdout]   |                                                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/player.rs:8:30
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn to_boxed(self) -> Box<Player>;
[INFO] [stdout]   |                              ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 8 |     fn to_boxed(self) -> Box<dyn Player>;
[INFO] [stdout]   |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/player.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl PartialEq for Player {
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl PartialEq for dyn Player {
[INFO] [stdout]    |                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/rules.rs:40:58
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn get_segment_winner(segment: &Vec<&Cell>) -> Option<Rc<Player>> {
[INFO] [stdout]    |                                                          ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn get_segment_winner(segment: &Vec<&Cell>) -> Option<Rc<dyn Player>> {
[INFO] [stdout]    |                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:13:39
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn play_game<'players>(player_one: Rc<Player>, player_two: Rc<Player>) -> GameState {
[INFO] [stdout]    |                                       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn play_game<'players>(player_one: Rc<dyn Player>, player_two: Rc<Player>) -> GameState {
[INFO] [stdout]    |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:13:63
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn play_game<'players>(player_one: Rc<Player>, player_two: Rc<Player>) -> GameState {
[INFO] [stdout]    |                                                               ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn play_game<'players>(player_one: Rc<Player>, player_two: Rc<dyn Player>) -> GameState {
[INFO] [stdout]    |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/board.rs:25:45
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn get_occupant(&self) -> Option<Rc<Player>> {
[INFO] [stdout]    |                                             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn get_occupant(&self) -> Option<Rc<dyn Player>> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/board.rs:78:44
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn occupy_cell(&self, occupant: Rc<Player>, reference: &CellReference) -> Self {
[INFO] [stdout]    |                                            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn occupy_cell(&self, occupant: Rc<dyn Player>, reference: &CellReference) -> Self {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/player.rs:11:20
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl PartialEq for Player {
[INFO] [stdout]    |                    ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl PartialEq for dyn Player {
[INFO] [stdout]    |                    +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/rules.rs:40:58
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn get_segment_winner(segment: &Vec<&Cell>) -> Option<Rc<Player>> {
[INFO] [stdout]    |                                                          ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn get_segment_winner(segment: &Vec<&Cell>) -> Option<Rc<dyn Player>> {
[INFO] [stdout]    |                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/mock_player.rs:27:38
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn get_move<'board>(&self, _: Rc<Player>, board: &'board Board) -> &'board CellReference {
[INFO] [stdout]    |                                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 27 |     fn get_move<'board>(&self, _: Rc<dyn Player>, board: &'board Board) -> &'board CellReference {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/mock_player.rs:37:30
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn to_boxed(self) -> Box<Player> {
[INFO] [stdout]    |                              ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 37 |     fn to_boxed(self) -> Box<dyn Player> {
[INFO] [stdout]    |                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:13:39
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn play_game<'players>(player_one: Rc<Player>, player_two: Rc<Player>) -> GameState {
[INFO] [stdout]    |                                       ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn play_game<'players>(player_one: Rc<dyn Player>, player_two: Rc<Player>) -> GameState {
[INFO] [stdout]    |                                       +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:13:63
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn play_game<'players>(player_one: Rc<Player>, player_two: Rc<Player>) -> GameState {
[INFO] [stdout]    |                                                               ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn play_game<'players>(player_one: Rc<Player>, player_two: Rc<dyn Player>) -> GameState {
[INFO] [stdout]    |                                                               +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/board.rs:25:45
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn get_occupant(&self) -> Option<Rc<Player>> {
[INFO] [stdout]    |                                             ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn get_occupant(&self) -> Option<Rc<dyn Player>> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/board.rs:78:44
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn occupy_cell(&self, occupant: Rc<Player>, reference: &CellReference) -> Self {
[INFO] [stdout]    |                                            ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn occupy_cell(&self, occupant: Rc<dyn Player>, reference: &CellReference) -> Self {
[INFO] [stdout]    |                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/board.rs:90:38
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub fn with_board(player_one: Rc<Player>, player_two: Rc<Player>, board_string: &str) -> Self {
[INFO] [stdout]    |                                      ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub fn with_board(player_one: Rc<dyn Player>, player_two: Rc<Player>, board_string: &str) -> Self {
[INFO] [stdout]    |                                      +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/board.rs:90:62
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub fn with_board(player_one: Rc<Player>, player_two: Rc<Player>, board_string: &str) -> Self {
[INFO] [stdout]    |                                                              ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub fn with_board(player_one: Rc<Player>, player_two: Rc<dyn Player>, board_string: &str) -> Self {
[INFO] [stdout]    |                                                              +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `play_game` is never used
[INFO] [stdout]   --> src/lib.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn play_game<'players>(player_one: Rc<Player>, player_two: Rc<Player>) -> GameState {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Board` is never constructed
[INFO] [stdout]  --> src/board.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Board {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Cell` is never constructed
[INFO] [stdout]   --> src/board.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct Cell {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_marker`, `get_reference`, and `get_occupant` are never used
[INFO] [stdout]   --> src/board.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl Cell {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] 16 |     pub fn get_marker(&self) -> Option<String> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 21 |     pub fn get_reference(&self) -> &CellReference {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 25 |     pub fn get_occupant(&self) -> Option<Rc<Player>> {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `CellReference` is never constructed
[INFO] [stdout]   --> src/board.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub struct CellReference(usize);
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `empty_board`, `empty_cells`, `cells`, `segments`, and `occupy_cell` are never used
[INFO] [stdout]   --> src/board.rs:34:12
[INFO] [stdout]    |
[INFO] [stdout] 33 | impl Board {
[INFO] [stdout]    | ---------- associated items in this implementation
[INFO] [stdout] 34 |     pub fn empty_board() -> Board {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 45 |     pub fn empty_cells(&self) -> Vec<&CellReference> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 52 |     pub fn cells(&self) -> impl Iterator<Item=&Cell> {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 56 |     pub fn segments(&self) -> Vec<Vec<&Cell>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 78 |     pub fn occupy_cell(&self, occupant: Rc<Player>, reference: &CellReference) -> Self {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `GameState` is never used
[INFO] [stdout]  --> src/rules.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub enum GameState {
[INFO] [stdout]   |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `analyze_game_state` is never used
[INFO] [stdout]   --> src/rules.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub fn analyze_game_state(board: &Board) -> GameState {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `get_segment_winner` is never used
[INFO] [stdout]   --> src/rules.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn get_segment_winner(segment: &Vec<&Cell>) -> Option<Rc<Player>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_move` and `to_boxed` are never used
[INFO] [stdout]  --> src/player.rs:7:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Player: Debug {
[INFO] [stdout]   |           ------ methods in this trait
[INFO] [stdout] 6 |     fn get_marker(&self) -> &str;
[INFO] [stdout] 7 |     fn get_move<'board>(&self, other_player: Rc<Player>, board: &'board Board) -> &'board CellReference;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 8 |     fn to_boxed(self) -> Box<Player>;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/board.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |         std::mem::replace(&mut cells[index], Cell { occupant: Some(occupant), reference: CellReference(index) });
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 81 |         let _ = std::mem::replace(&mut cells[index], Cell { occupant: Some(occupant), reference: CellReference(index) });
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `empty_cell_indices` is never used
[INFO] [stdout]    --> src/board.rs:124:8
[INFO] [stdout]     |
[INFO] [stdout] 124 |     fn empty_cell_indices(board: &Board) -> Vec<usize> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `to_boxed` is never used
[INFO] [stdout]  --> src/player.rs:8:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub trait Player: Debug {
[INFO] [stdout]   |           ------ method in this trait
[INFO] [stdout] ...
[INFO] [stdout] 8 |     fn to_boxed(self) -> Box<Player>;
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `std::mem::replace` that must be used
[INFO] [stdout]   --> src/board.rs:81:9
[INFO] [stdout]    |
[INFO] [stdout] 81 |         std::mem::replace(&mut cells[index], Cell { occupant: Some(occupant), reference: CellReference(index) });
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you don't need the old value, you can just assign the new value directly
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 81 |         let _ = std::mem::replace(&mut cells[index], Cell { occupant: Some(occupant), reference: CellReference(index) });
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.16s
[INFO] running `Command { std: "docker" "inspect" "ca2724ed26a06602bdf7b83f458764a5b5df79858c7830f15f74769f6dfe822d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca2724ed26a06602bdf7b83f458764a5b5df79858c7830f15f74769f6dfe822d", kill_on_drop: false }`
[INFO] [stdout] ca2724ed26a06602bdf7b83f458764a5b5df79858c7830f15f74769f6dfe822d