[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 try#012cd62c9add58ab3910e44c137d87db3ab70f61 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJHeinzde%2Fengine" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[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-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/JHeinzde/engine on toolchain 012cd62c9add58ab3910e44c137d87db3ab70f61
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[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" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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_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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] bb6300ca0d2c43541d9fc770107818b3b25c12a0849f02ad7ee533dba769cf49
[INFO] running `Command { std: "docker" "start" "-a" "bb6300ca0d2c43541d9fc770107818b3b25c12a0849f02ad7ee533dba769cf49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb6300ca0d2c43541d9fc770107818b3b25c12a0849f02ad7ee533dba769cf49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb6300ca0d2c43541d9fc770107818b3b25c12a0849f02ad7ee533dba769cf49", kill_on_drop: false }`
[INFO] [stdout] bb6300ca0d2c43541d9fc770107818b3b25c12a0849f02ad7ee533dba769cf49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+012cd62c9add58ab3910e44c137d87db3ab70f61" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 75e102af172be39a6973125a6b3efbb58c2e4ebb8d1854772028fc48fa8fb796
[INFO] running `Command { std: "docker" "start" "-a" "75e102af172be39a6973125a6b3efbb58c2e4ebb8d1854772028fc48fa8fb796", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.151
[INFO] [stderr]    Compiling proc-macro2 v1.0.71
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling unicode-xid v0.2.4
[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 adler v1.0.2
[INFO] [stderr]    Compiling ppv-lite86 v0.2.17
[INFO] [stderr]    Compiling miniz_oxide v0.7.1
[INFO] [stderr]    Compiling rustc-demangle v0.1.23
[INFO] [stderr]    Compiling rand_pcg v0.2.1
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]    Compiling object v0.32.2
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling rand v0.7.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking nodrop v0.1.14
[INFO] [stderr]    Compiling backtrace v0.3.69
[INFO] [stderr]    Compiling addr2line v0.21.0
[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:259:31
[INFO] [stdout]     |
[INFO] [stdout] 259 |         let mut first_guess = 0;
[INFO] [stdout]     |                               ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 263 |             (first_guess, best_move) = self.pvs(board, i32::MIN, i32::MAX, d);
[INFO] [stdout]     |              ----------- `first_guess` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `best_move` is never read
[INFO] [stdout]    --> src/Engine.rs:260:29
[INFO] [stdout]     |
[INFO] [stdout] 260 |         let mut best_move = ChessMove::default();
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 263 |             (first_guess, best_move) = self.pvs(board, i32::MIN, i32::MAX, d);
[INFO] [stdout]     |                           --------- `best_move` is overwritten here before the previous value is 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `score` is never read
[INFO] [stdout]    --> src/Engine.rs:367:25
[INFO] [stdout]     |
[INFO] [stdout] 367 |         let mut score = i32::MIN;
[INFO] [stdout]     |                         ^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 376 |                 (score) = self.zws(board.make_move_new(*mov), alpha.saturating_neg(), depth - 1);
[INFO] [stdout]     |                 -------------------------------------------------------------------------------- `score` is overwritten here before the previous value is read
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `score` is never read
[INFO] [stdout]    --> src/Engine.rs:455:25
[INFO] [stdout]     |
[INFO] [stdout] 455 |         let mut score = 0;
[INFO] [stdout]     |                         ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 463 |             score = self.quiesce_search(beta.saturating_neg(), alpha.saturating_neg(), &board.make_move_new(mov)).saturating_neg();
[INFO] [stdout]     |             ---------------------------------------------------------------------------------------------------------------------- `score` is overwritten here before the previous value is 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(nonstandard_style)]`) 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)]` (part of `#[warn(unused)]`) 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: value assigned to `first_guess` is never read
[INFO] [stdout]    --> src/Engine.rs:259:31
[INFO] [stdout]     |
[INFO] [stdout] 259 |         let mut first_guess = 0;
[INFO] [stdout]     |                               ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 263 |             (first_guess, best_move) = self.pvs(board, i32::MIN, i32::MAX, d);
[INFO] [stdout]     |              ----------- `first_guess` is overwritten here before the previous value is read
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_assignments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `best_move` is never read
[INFO] [stdout]    --> src/Engine.rs:260:29
[INFO] [stdout]     |
[INFO] [stdout] 260 |         let mut best_move = ChessMove::default();
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 263 |             (first_guess, best_move) = self.pvs(board, i32::MIN, i32::MAX, d);
[INFO] [stdout]     |                           --------- `best_move` is overwritten here before the previous value is 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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `score` is never read
[INFO] [stdout]    --> src/Engine.rs:367:25
[INFO] [stdout]     |
[INFO] [stdout] 367 |         let mut score = i32::MIN;
[INFO] [stdout]     |                         ^^^^^^^^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 376 |                 (score) = self.zws(board.make_move_new(*mov), alpha.saturating_neg(), depth - 1);
[INFO] [stdout]     |                 -------------------------------------------------------------------------------- `score` is overwritten here before the previous value is read
[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)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `score` is never read
[INFO] [stdout]    --> src/Engine.rs:455:25
[INFO] [stdout]     |
[INFO] [stdout] 455 |         let mut score = 0;
[INFO] [stdout]     |                         ^ this value is reassigned later and never used
[INFO] [stdout] ...
[INFO] [stdout] 463 |             score = self.quiesce_search(beta.saturating_neg(), alpha.saturating_neg(), &board.make_move_new(mov)).saturating_neg();
[INFO] [stdout]     |             ---------------------------------------------------------------------------------------------------------------------- `score` is overwritten here before the previous value is 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)]` (part of `#[warn(unused)]`) 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)]` (part of `#[warn(nonstandard_style)]`) 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)]` (part of `#[warn(unused)]`) 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 16s
[INFO] running `Command { std: "docker" "inspect" "75e102af172be39a6973125a6b3efbb58c2e4ebb8d1854772028fc48fa8fb796", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75e102af172be39a6973125a6b3efbb58c2e4ebb8d1854772028fc48fa8fb796", kill_on_drop: false }`
[INFO] [stdout] 75e102af172be39a6973125a6b3efbb58c2e4ebb8d1854772028fc48fa8fb796
