[INFO] cloning repository https://github.com/JHeinzde/engine [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JHeinzde/engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJHeinzde%2Fengine", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJHeinzde%2Fengine'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 391425d3c80e5edb9d5ec987478b2ef6dcf766ab [INFO] checking JHeinzde/engine against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJHeinzde%2Fengine" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/JHeinzde/engine on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/JHeinzde/engine [INFO] finished tweaking git repo https://github.com/JHeinzde/engine [INFO] tweaked toml for git repo https://github.com/JHeinzde/engine written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/JHeinzde/engine 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 7367b4c06959fe3f5335e0c99fd1c45abcbf5641237cf98a1099d1d049a139dc [INFO] running `Command { std: "docker" "start" "-a" "7367b4c06959fe3f5335e0c99fd1c45abcbf5641237cf98a1099d1d049a139dc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7367b4c06959fe3f5335e0c99fd1c45abcbf5641237cf98a1099d1d049a139dc", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7367b4c06959fe3f5335e0c99fd1c45abcbf5641237cf98a1099d1d049a139dc", kill_on_drop: false }` [INFO] [stdout] 7367b4c06959fe3f5335e0c99fd1c45abcbf5641237cf98a1099d1d049a139dc [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] bbce74e87aaffd10fc34abe92b2b96ae8f3d01103c9aa383aa19de105b4e72b7 [INFO] running `Command { std: "docker" "start" "-a" "bbce74e87aaffd10fc34abe92b2b96ae8f3d01103c9aa383aa19de105b4e72b7", kill_on_drop: false }` [INFO] [stderr] Compiling libc v0.2.151 [INFO] [stderr] Compiling syn v1.0.109 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Compiling unicode-xid v0.2.4 [INFO] [stderr] Compiling adler v1.0.2 [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Compiling gimli v0.28.1 [INFO] [stderr] Compiling memchr v2.6.4 [INFO] [stderr] Compiling ppv-lite86 v0.2.17 [INFO] [stderr] Compiling rustc-demangle v0.1.23 [INFO] [stderr] Checking nodrop v0.1.14 [INFO] [stderr] Compiling miniz_oxide v0.7.1 [INFO] [stderr] Compiling rand_pcg v0.2.1 [INFO] [stderr] Compiling rand_chacha v0.2.2 [INFO] [stderr] Checking object v0.32.2 [INFO] [stderr] Compiling rand v0.7.3 [INFO] [stderr] Compiling cc v1.0.83 [INFO] [stderr] Compiling addr2line v0.21.0 [INFO] [stderr] Compiling backtrace v0.3.69 [INFO] [stderr] Compiling synstructure v0.12.6 [INFO] [stderr] Checking failure v0.1.8 [INFO] [stderr] Compiling chess v3.2.0 [INFO] [stderr] Checking chess-engine v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: value assigned to `first_guess` is never read [INFO] [stdout] --> src/Engine.rs:259:17 [INFO] [stdout] | [INFO] [stdout] 259 | let mut first_guess = 0; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `best_move` is never read [INFO] [stdout] --> src/Engine.rs:260:17 [INFO] [stdout] | [INFO] [stdout] 260 | let mut best_move = ChessMove::default(); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `score` is never read [INFO] [stdout] --> src/Engine.rs:367:17 [INFO] [stdout] | [INFO] [stdout] 367 | let mut score = i32::MIN; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/Engine.rs:366:13 [INFO] [stdout] | [INFO] [stdout] 366 | let mut moves_iter = moves.iter(); [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: unused variable: `sorted_moves` [INFO] [stdout] --> src/Engine.rs:433:13 [INFO] [stdout] | [INFO] [stdout] 433 | let sorted_moves = self.sort_moves(&board, &mut legal_moves, None); [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sorted_moves` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `score` is never read [INFO] [stdout] --> src/Engine.rs:455:17 [INFO] [stdout] | [INFO] [stdout] 455 | let mut score = 0; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `first_guess` is never read [INFO] [stdout] --> src/Engine.rs:259:17 [INFO] [stdout] | [INFO] [stdout] 259 | let mut first_guess = 0; [INFO] [stdout] | ^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] = note: `#[warn(unused_assignments)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `best_move` is never read [INFO] [stdout] --> src/Engine.rs:260:17 [INFO] [stdout] | [INFO] [stdout] 260 | let mut best_move = ChessMove::default(); [INFO] [stdout] | ^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `score` is never read [INFO] [stdout] --> src/Engine.rs:367:17 [INFO] [stdout] | [INFO] [stdout] 367 | let mut score = i32::MIN; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `cut_off_counter` is never read [INFO] [stdout] --> src/Engine.rs:157:9 [INFO] [stdout] | [INFO] [stdout] 155 | pub struct Engine { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] 156 | pub pos_counter: u32, [INFO] [stdout] 157 | pub cut_off_counter: u32, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `SortedMoveGen` is never constructed [INFO] [stdout] --> src/Engine.rs:477:8 [INFO] [stdout] | [INFO] [stdout] 477 | struct SortedMoveGen { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/Engine.rs:484:8 [INFO] [stdout] | [INFO] [stdout] 483 | impl SortedMoveGen { [INFO] [stdout] | ------------------ associated function in this implementation [INFO] [stdout] 484 | fn new(move_gen: MoveGen, board: &Board) -> SortedMoveGen { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: module `Engine` should have a snake case name [INFO] [stdout] --> src/main.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | mod Engine; [INFO] [stdout] | ^^^^^^ help: convert the identifier to snake case: `engine` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/Engine.rs:366:13 [INFO] [stdout] | [INFO] [stdout] 366 | let mut moves_iter = moves.iter(); [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: unused variable: `sorted_moves` [INFO] [stdout] --> src/Engine.rs:433:13 [INFO] [stdout] | [INFO] [stdout] 433 | let sorted_moves = self.sort_moves(&board, &mut legal_moves, None); [INFO] [stdout] | ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_sorted_moves` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: value assigned to `score` is never read [INFO] [stdout] --> src/Engine.rs:455:17 [INFO] [stdout] | [INFO] [stdout] 455 | let mut score = 0; [INFO] [stdout] | ^^^^^ [INFO] [stdout] | [INFO] [stdout] = help: maybe it is overwritten before being read? [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/Engine.rs:264:13 [INFO] [stdout] | [INFO] [stdout] 264 | tx.send((first_guess, best_move, d, self.pos_counter)); [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] 264 | let _ = tx.send((first_guess, best_move, d, self.pos_counter)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: field `cut_off_counter` is never read [INFO] [stdout] --> src/Engine.rs:157:9 [INFO] [stdout] | [INFO] [stdout] 155 | pub struct Engine { [INFO] [stdout] | ------ field in this struct [INFO] [stdout] 156 | pub pos_counter: u32, [INFO] [stdout] 157 | pub cut_off_counter: u32, [INFO] [stdout] | ^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(dead_code)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: struct `SortedMoveGen` is never constructed [INFO] [stdout] --> src/Engine.rs:477:8 [INFO] [stdout] | [INFO] [stdout] 477 | struct SortedMoveGen { [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: associated function `new` is never used [INFO] [stdout] --> src/Engine.rs:484:8 [INFO] [stdout] | [INFO] [stdout] 483 | impl SortedMoveGen { [INFO] [stdout] | ------------------ associated function in this implementation [INFO] [stdout] 484 | fn new(move_gen: MoveGen, board: &Board) -> SortedMoveGen { [INFO] [stdout] | ^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: module `Engine` should have a snake case name [INFO] [stdout] --> src/main.rs:13:5 [INFO] [stdout] | [INFO] [stdout] 13 | mod Engine; [INFO] [stdout] | ^^^^^^ help: convert the identifier to snake case: `engine` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(non_snake_case)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused `Result` that must be used [INFO] [stdout] --> src/Engine.rs:264:13 [INFO] [stdout] | [INFO] [stdout] 264 | tx.send((first_guess, best_move, d, self.pos_counter)); [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] 264 | let _ = tx.send((first_guess, best_move, d, self.pos_counter)); [INFO] [stdout] | +++++++ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: 11 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 01s [INFO] running `Command { std: "docker" "inspect" "bbce74e87aaffd10fc34abe92b2b96ae8f3d01103c9aa383aa19de105b4e72b7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "bbce74e87aaffd10fc34abe92b2b96ae8f3d01103c9aa383aa19de105b4e72b7", kill_on_drop: false }` [INFO] [stdout] bbce74e87aaffd10fc34abe92b2b96ae8f3d01103c9aa383aa19de105b4e72b7