[INFO] cloning repository https://github.com/cmourglia/chess_engine [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cmourglia/chess_engine" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcmourglia%2Fchess_engine", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcmourglia%2Fchess_engine'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] d86f65ada4624fdcacdc1300cb4235a371024829 [INFO] testing cmourglia/chess_engine against beta-2022-02-22 for beta-1.60-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcmourglia%2Fchess_engine" "/workspace/builds/worker-89/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-89/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/cmourglia/chess_engine on toolchain beta-2022-02-22 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/cmourglia/chess_engine [INFO] finished tweaking git repo https://github.com/cmourglia/chess_engine [INFO] tweaked toml for git repo https://github.com/cmourglia/chess_engine written to /workspace/builds/worker-89/source/Cargo.toml [INFO] crate git repo https://github.com/cmourglia/chess_engine already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-02-22" "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-89/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/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@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] ce64cb77317ab6fabbcf25ccf76f24c28c529576029c770ae9ed9b1d9f2c66aa [INFO] running `Command { std: "docker" "start" "-a" "ce64cb77317ab6fabbcf25ccf76f24c28c529576029c770ae9ed9b1d9f2c66aa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "ce64cb77317ab6fabbcf25ccf76f24c28c529576029c770ae9ed9b1d9f2c66aa", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "ce64cb77317ab6fabbcf25ccf76f24c28c529576029c770ae9ed9b1d9f2c66aa", kill_on_drop: false }` [INFO] [stdout] ce64cb77317ab6fabbcf25ccf76f24c28c529576029c770ae9ed9b1d9f2c66aa [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-89/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:0cd99ca24d8e8c98e67c542213511d985b8778b5bdcbb160e038429496686047" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-02-22" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] b7986a984b8c3a5dba0cc4c3b454c271640ab11089fba5890720314e102a1e9b [INFO] running `Command { std: "docker" "start" "-a" "b7986a984b8c3a5dba0cc4c3b454c271640ab11089fba5890720314e102a1e9b", kill_on_drop: false }` [INFO] [stderr] Compiling proc-macro2 v1.0.36 [INFO] [stderr] Compiling unicode-xid v0.2.2 [INFO] [stderr] Compiling syn v1.0.86 [INFO] [stderr] Compiling libc v0.2.116 [INFO] [stderr] Compiling serde v1.0.136 [INFO] [stderr] Compiling siphasher v0.3.9 [INFO] [stderr] Compiling ppv-lite86 v0.2.16 [INFO] [stderr] Compiling proc-macro-hack v0.5.19 [INFO] [stderr] Compiling phf_shared v0.10.0 [INFO] [stderr] Compiling quote v1.0.15 [INFO] [stderr] Compiling getrandom v0.2.4 [INFO] [stderr] Compiling toml v0.5.8 [INFO] [stderr] Compiling rand_core v0.6.3 [INFO] [stderr] Compiling rand_chacha v0.3.1 [INFO] [stderr] Compiling rand v0.8.4 [INFO] [stderr] Compiling phf_generator v0.10.0 [INFO] [stderr] Compiling thiserror-impl v1.0.30 [INFO] [stderr] Compiling phf_macros v0.10.0 [INFO] [stderr] Compiling phf v0.10.1 [INFO] [stderr] Compiling thiserror v1.0.30 [INFO] [stderr] Compiling proc-macro-crate v1.1.0 [INFO] [stderr] Compiling num_enum_derive v0.5.6 [INFO] [stderr] Compiling num_enum v0.5.6 [INFO] [stderr] Compiling chess_engine v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `ascii_view::*` [INFO] [stdout] --> src/main.rs:5:5 [INFO] [stdout] | [INFO] [stdout] 5 | use ascii_view::*; [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `src_bitbard` [INFO] [stdout] --> src/board.rs:211:13 [INFO] [stdout] | [INFO] [stdout] 211 | let src_bitbard = bitboard_from_square(src_square); [INFO] [stdout] | ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_src_bitbard` [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/board.rs:215:13 [INFO] [stdout] | [INFO] [stdout] 215 | let mut bitboard = self.mut_bitboard(piece, self.side_to_move); [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/board.rs:218:13 [INFO] [stdout] | [INFO] [stdout] 218 | let mut my_occupancy = &mut self.occupancies[self.side_to_move as usize]; [INFO] [stdout] | ----^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: variable does not need to be mutable [INFO] [stdout] --> src/board.rs:221:13 [INFO] [stdout] | [INFO] [stdout] 221 | let mut all_occupancy = &mut self.occupancies[Side::Both as usize]; [INFO] [stdout] | ----^^^^^^^^^^^^^ [INFO] [stdout] | | [INFO] [stdout] | help: remove this `mut` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel [INFO] [stdout] --> src/main.rs:1:12 [INFO] [stdout] | [INFO] [stdout] 1 | #![feature(variant_count)] [INFO] [stdout] | ^^^^^^^^^^^^^ [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] error: aborting due to previous error; 5 warnings emitted [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] For more information about this error, try `rustc --explain E0554`. [INFO] [stdout] [INFO] [stderr] error: could not compile `chess_engine` due to 2 previous errors; 5 warnings emitted [INFO] running `Command { std: "docker" "inspect" "b7986a984b8c3a5dba0cc4c3b454c271640ab11089fba5890720314e102a1e9b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b7986a984b8c3a5dba0cc4c3b454c271640ab11089fba5890720314e102a1e9b", kill_on_drop: false }` [INFO] [stdout] b7986a984b8c3a5dba0cc4c3b454c271640ab11089fba5890720314e102a1e9b