[INFO] cloning repository https://github.com/notgarrett/RustTicTacToe [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/notgarrett/RustTicTacToe" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnotgarrett%2FRustTicTacToe", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnotgarrett%2FRustTicTacToe'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] f7a5e900ac6aa60ba165c998e55841d0de3bb09e [INFO] building notgarrett/RustTicTacToe against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnotgarrett%2FRustTicTacToe" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/notgarrett/RustTicTacToe on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/notgarrett/RustTicTacToe [INFO] finished tweaking git repo https://github.com/notgarrett/RustTicTacToe [INFO] tweaked toml for git repo https://github.com/notgarrett/RustTicTacToe written to /workspace/builds/worker-6-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/notgarrett/RustTicTacToe 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 88426bf647b22a5e94dfe1fd31ca02efe71863d0110aef078695a2f2969e11df [INFO] running `Command { std: "docker" "start" "-a" "88426bf647b22a5e94dfe1fd31ca02efe71863d0110aef078695a2f2969e11df", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "88426bf647b22a5e94dfe1fd31ca02efe71863d0110aef078695a2f2969e11df", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "88426bf647b22a5e94dfe1fd31ca02efe71863d0110aef078695a2f2969e11df", kill_on_drop: false }` [INFO] [stdout] 88426bf647b22a5e94dfe1fd31ca02efe71863d0110aef078695a2f2969e11df [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1a1c4aede978a3e977f7cd99028f537dbedbe3c113c526f9cd753218e7d8f923 [INFO] running `Command { std: "docker" "start" "-a" "1a1c4aede978a3e977f7cd99028f537dbedbe3c113c526f9cd753218e7d8f923", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.153 [INFO] [stderr] Compiling ppv-lite86 v0.2.17 [INFO] [stderr] Compiling getrandom v0.2.12 [INFO] [stderr] Compiling rand_core v0.6.4 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling rand v0.8.5 [INFO] [stderr] Compiling tictactoe v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `borrow::BorrowMut` and `rc::Rc` [INFO] [stdout] --> src/mcts.rs:5:11 [INFO] [stdout] | [INFO] [stdout] 5 | use std::{borrow::BorrowMut, rc::Rc}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `child` [INFO] [stdout] --> src/mcts.rs:54:17 [INFO] [stdout] | [INFO] [stdout] 54 | let mut child = MctsNode::new(clone, self.turn); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_child` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/mcts.rs:54:13 [INFO] [stdout] | [INFO] [stdout] 54 | let mut child = MctsNode::new(clone, self.turn); [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: struct `MctsNode` is never constructed [INFO] [stdout] --> src/mcts.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | struct MctsNode { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: multiple associated items are never used [INFO] [stdout] --> src/mcts.rs:18:12 [INFO] [stdout] | [INFO] [stdout] 17 | impl MctsNode { [INFO] [stdout] | ------------- associated items in this implementation [INFO] [stdout] 18 | pub fn new(state: TicTacToe, turn: CurrentTurn) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 29 | pub fn set_parent(&mut self, parent: Box) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 33 | pub fn generate_moves(&mut self) { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 43 | pub fn play(&mut self, pos: usize) -> Result<(), GameError> { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 62 | pub fn generate_tree(&mut self) { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 66 | pub fn rollout(&mut self) -> GameStates { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 80 | pub fn propegate_wins(&mut self) { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 89 | pub fn add_child(&mut self, child: MctsNode) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 93 | fn is_terminal(self) -> bool { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 97 | fn bcu_vector(&self) -> std::vec::Vec { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 105 | fn bcu(node: &MctsNode) -> f32 { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `turn` is never used [INFO] [stdout] --> src/tictactoe.rs:90:12 [INFO] [stdout] | [INFO] [stdout] 50 | impl TicTacToe { [INFO] [stdout] | -------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 90 | pub fn turn(&self) -> CurrentTurn { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/mcts.rs:39:13 [INFO] [stdout] | [INFO] [stdout] 39 | self.play(i); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 39 | let _ = self.play(i); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.86s [INFO] running `Command { std: "docker" "inspect" "1a1c4aede978a3e977f7cd99028f537dbedbe3c113c526f9cd753218e7d8f923", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1a1c4aede978a3e977f7cd99028f537dbedbe3c113c526f9cd753218e7d8f923", kill_on_drop: false }` [INFO] [stdout] 1a1c4aede978a3e977f7cd99028f537dbedbe3c113c526f9cd753218e7d8f923 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] ea93aa0bc85b7a6336f4b641f9f86ad96a7c10658b20f2ac0b8d9fb208191304 [INFO] running `Command { std: "docker" "start" "-a" "ea93aa0bc85b7a6336f4b641f9f86ad96a7c10658b20f2ac0b8d9fb208191304", kill_on_drop: false }` [INFO] [stderr] Compiling tictactoe v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused imports: `borrow::BorrowMut` and `rc::Rc` [INFO] [stdout] --> src/mcts.rs:5:11 [INFO] [stdout] | [INFO] [stdout] 5 | use std::{borrow::BorrowMut, rc::Rc}; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^ ^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `child` [INFO] [stdout] --> src/mcts.rs:54:17 [INFO] [stdout] | [INFO] [stdout] 54 | let mut child = MctsNode::new(clone, self.turn); [INFO] [stdout] | ^^^^^ help: if this is intentional, prefix it with an underscore: `_child` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/mcts.rs:54:13 [INFO] [stdout] | [INFO] [stdout] 54 | let mut child = MctsNode::new(clone, self.turn); [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: struct `MctsNode` is never constructed [INFO] [stdout] --> src/mcts.rs:8:8 [INFO] [stdout] | [INFO] [stdout] 8 | struct MctsNode { [INFO] [stdout] | ^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: multiple associated items are never used [INFO] [stdout] --> src/mcts.rs:18:12 [INFO] [stdout] | [INFO] [stdout] 17 | impl MctsNode { [INFO] [stdout] | ------------- associated items in this implementation [INFO] [stdout] 18 | pub fn new(state: TicTacToe, turn: CurrentTurn) -> Self { [INFO] [stdout] | ^^^ [INFO] [stdout] ... [INFO] [stdout] 29 | pub fn set_parent(&mut self, parent: Box) { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 33 | pub fn generate_moves(&mut self) { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 43 | pub fn play(&mut self, pos: usize) -> Result<(), GameError> { [INFO] [stdout] | ^^^^ [INFO] [stdout] ... [INFO] [stdout] 62 | pub fn generate_tree(&mut self) { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 66 | pub fn rollout(&mut self) -> GameStates { [INFO] [stdout] | ^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 80 | pub fn propegate_wins(&mut self) { [INFO] [stdout] | ^^^^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 89 | pub fn add_child(&mut self, child: MctsNode) { [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 93 | fn is_terminal(self) -> bool { [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 97 | fn bcu_vector(&self) -> std::vec::Vec { [INFO] [stdout] | ^^^^^^^^^^ [INFO] [stdout] ... [INFO] [stdout] 105 | fn bcu(node: &MctsNode) -> f32 { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: method `turn` is never used [INFO] [stdout] --> src/tictactoe.rs:90:12 [INFO] [stdout] | [INFO] [stdout] 50 | impl TicTacToe { [INFO] [stdout] | -------------- method in this implementation [INFO] [stdout] ... [INFO] [stdout] 90 | pub fn turn(&self) -> CurrentTurn { [INFO] [stdout] | ^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/mcts.rs:39:13 [INFO] [stdout] | [INFO] [stdout] 39 | self.play(i); [INFO] [stdout] | ^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: this `Result` may be an `Err` variant, which should be handled [INFO] [stdout] = note: `#[warn(unused_must_use)]` on by default [INFO] [stdout] help: use `let _ = ...` to ignore the resulting value [INFO] [stdout] | [INFO] [stdout] 39 | let _ = self.play(i); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `test` profile [unoptimized + debuginfo] target(s) in 0.24s [INFO] running `Command { std: "docker" "inspect" "ea93aa0bc85b7a6336f4b641f9f86ad96a7c10658b20f2ac0b8d9fb208191304", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ea93aa0bc85b7a6336f4b641f9f86ad96a7c10658b20f2ac0b8d9fb208191304", kill_on_drop: false }` [INFO] [stdout] ea93aa0bc85b7a6336f4b641f9f86ad96a7c10658b20f2ac0b8d9fb208191304