[INFO] cloning repository https://github.com/zmeadows/feldspar [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zmeadows/feldspar" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzmeadows%2Ffeldspar"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzmeadows%2Ffeldspar'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 770ccc7fba2c6f5c6d26f517b68960b970e9d9c8 [INFO] testing zmeadows/feldspar against 1.44.0 for beta-1.45-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzmeadows%2Ffeldspar" "/workspace/builds/worker-3/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/zmeadows/feldspar on toolchain 1.44.0 [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/zmeadows/feldspar [INFO] finished tweaking git repo https://github.com/zmeadows/feldspar [INFO] tweaked toml for git repo https://github.com/zmeadows/feldspar written to /workspace/builds/worker-3/source/Cargo.toml [INFO] crate git repo https://github.com/zmeadows/feldspar already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+1.44.0" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 7cb6c979e591c8a321708e200a83392fadec6f5205f2868a475348cb1008beea [INFO] running `"docker" "start" "-a" "7cb6c979e591c8a321708e200a83392fadec6f5205f2868a475348cb1008beea"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling libc v0.2.41 [INFO] [stderr] Compiling num-traits v0.2.5 [INFO] [stderr] Compiling byteorder v1.2.3 [INFO] [stderr] Compiling strsim v0.6.0 [INFO] [stderr] Compiling rand_core v0.2.1 [INFO] [stderr] Compiling cfg-if v0.1.3 [INFO] [stderr] Compiling term v0.4.6 [INFO] [stderr] Compiling bitflags v0.9.1 [INFO] [stderr] Compiling encode_unicode v0.3.1 [INFO] [stderr] Compiling yaml-rust v0.3.5 [INFO] [stderr] Compiling bitflags v1.0.3 [INFO] [stderr] Compiling textwrap v0.9.0 [INFO] [stderr] Compiling colored v1.6.0 [INFO] [stderr] Compiling log v0.4.1 [INFO] [stderr] Compiling memchr v1.0.2 [INFO] [stderr] Compiling atty v0.2.10 [INFO] [stderr] Compiling time v0.1.40 [INFO] [stderr] Compiling rand v0.5.1 [INFO] [stderr] Compiling num_cpus v1.8.0 [INFO] [stderr] Compiling csv v0.15.0 [INFO] [stderr] Compiling clap v2.27.1 [INFO] [stderr] Compiling num-integer v0.1.39 [INFO] [stderr] Compiling prettytable-rs v0.6.7 [INFO] [stderr] Compiling chrono v0.4.4 [INFO] [stderr] Compiling feldspar2 v0.2.0 (/opt/rustwide/workdir) [INFO] [stderr] error[E0557]: feature has been removed [INFO] [stderr] --> src/main.rs:7:20 [INFO] [stderr] | [INFO] [stderr] 7 | #![feature(plugin, custom_attribute)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^ feature has been removed [INFO] [stderr] | [INFO] [stderr] = note: removed in favor of `#![register_tool]` and `#![register_attr]` [INFO] [stderr] [INFO] [stderr] error[E0432]: unresolved import `std::simd` [INFO] [stderr] --> src/bitboard.rs:13:10 [INFO] [stderr] | [INFO] [stderr] 13 | use std::simd::{u64x4}; [INFO] [stderr] | ^^^^ could not find `simd` in `std` [INFO] [stderr] [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:1:1 [INFO] [stderr] | [INFO] [stderr] 1 | #![feature(const_fn)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:2:1 [INFO] [stderr] | [INFO] [stderr] 2 | #![feature(reverse_bits)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:4:1 [INFO] [stderr] | [INFO] [stderr] 4 | #![feature(extern_prelude)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:5:1 [INFO] [stderr] | [INFO] [stderr] 5 | #![feature(stdsimd)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:6:1 [INFO] [stderr] | [INFO] [stderr] 6 | #![feature(iterator_step_by)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] error[E0554]: `#![feature]` may not be used on the stable release channel [INFO] [stderr] --> src/main.rs:7:1 [INFO] [stderr] | [INFO] [stderr] 7 | #![feature(plugin, custom_attribute)] [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead [INFO] [stderr] --> src/core.rs:202:1 [INFO] [stderr] | [INFO] [stderr] 202 | / bitflags! { [INFO] [stderr] 203 | | pub struct CastlingRights: u8 { [INFO] [stderr] 204 | | const WHITE_KINGSIDE = 0b0001; [INFO] [stderr] 205 | | const WHITE_QUEENSIDE = 0b0010; [INFO] [stderr] ... | [INFO] [stderr] 208 | | } [INFO] [stderr] 209 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(deprecated)]` on by default [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead [INFO] [stderr] --> src/core.rs:202:1 [INFO] [stderr] | [INFO] [stderr] 202 | / bitflags! { [INFO] [stderr] 203 | | pub struct CastlingRights: u8 { [INFO] [stderr] 204 | | const WHITE_KINGSIDE = 0b0001; [INFO] [stderr] 205 | | const WHITE_QUEENSIDE = 0b0010; [INFO] [stderr] ... | [INFO] [stderr] 208 | | } [INFO] [stderr] 209 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead [INFO] [stderr] --> src/core.rs:202:1 [INFO] [stderr] | [INFO] [stderr] 202 | / bitflags! { [INFO] [stderr] 203 | | pub struct CastlingRights: u8 { [INFO] [stderr] 204 | | const WHITE_KINGSIDE = 0b0001; [INFO] [stderr] 205 | | const WHITE_QUEENSIDE = 0b0010; [INFO] [stderr] ... | [INFO] [stderr] 208 | | } [INFO] [stderr] 209 | | } [INFO] [stderr] | |_^ [INFO] [stderr] | [INFO] [stderr] = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info) [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/search.rs:92:12 [INFO] [stderr] | [INFO] [stderr] 92 | if (s2 > best_value || best_move == Move::null()) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_parens)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/game.rs:331:24 [INFO] [stderr] | [INFO] [stderr] 331 | if (self.ep_square.is_some()) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/game.rs:481:16 [INFO] [stderr] | [INFO] [stderr] 481 | if (self.ep_square.is_some()) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/moves.rs:67:17 [INFO] [stderr] | [INFO] [stderr] 67 | let a = ((captured_piece as u32) << 19); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/moves.rs:68:17 [INFO] [stderr] | [INFO] [stderr] 68 | let b = ((moved_piece as u32) << 16); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/moves.rs:69:17 [INFO] [stderr] | [INFO] [stderr] 69 | let c = ((flag) << 12); [INFO] [stderr] | ^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/moves.rs:70:17 [INFO] [stderr] | [INFO] [stderr] 70 | let d = ((from.unwrap()) << 6); [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/moves.rs:71:17 [INFO] [stderr] | [INFO] [stderr] 71 | let e = (to.unwrap()); [INFO] [stderr] | ^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/move_list.rs:36:16 [INFO] [stderr] | [INFO] [stderr] 36 | if (best_move_candidate.is_some()) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/move_list.rs:37:20 [INFO] [stderr] | [INFO] [stderr] 37 | if (*m1 == best_move_candidate.unwrap()) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/move_list.rs:40:20 [INFO] [stderr] | [INFO] [stderr] 40 | if (*m2 == best_move_candidate.unwrap()) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1009:17 [INFO] [stderr] | [INFO] [stderr] 1009 | pro &= (pro >> 8 ); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1011:17 [INFO] [stderr] | [INFO] [stderr] 1011 | pro &= (pro >> 16); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1018:17 [INFO] [stderr] | [INFO] [stderr] 1018 | pro &= (pro << 8); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1020:17 [INFO] [stderr] | [INFO] [stderr] 1020 | pro &= (pro << 16); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1028:17 [INFO] [stderr] | [INFO] [stderr] 1028 | pro &= (pro << 1); [INFO] [stderr] | ^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1030:17 [INFO] [stderr] | [INFO] [stderr] 1030 | pro &= (pro << 2); [INFO] [stderr] | ^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1038:17 [INFO] [stderr] | [INFO] [stderr] 1038 | pro &= (pro << 9); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1040:17 [INFO] [stderr] | [INFO] [stderr] 1040 | pro &= (pro << 18); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1048:17 [INFO] [stderr] | [INFO] [stderr] 1048 | pro &= (pro >> 7); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1050:17 [INFO] [stderr] | [INFO] [stderr] 1050 | pro &= (pro >> 14); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1058:17 [INFO] [stderr] | [INFO] [stderr] 1058 | pro &= (pro >> 1); [INFO] [stderr] | ^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1060:17 [INFO] [stderr] | [INFO] [stderr] 1060 | pro &= (pro >> 2); [INFO] [stderr] | ^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1068:17 [INFO] [stderr] | [INFO] [stderr] 1068 | pro &= (pro >> 9); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1070:17 [INFO] [stderr] | [INFO] [stderr] 1070 | pro &= (pro >> 18); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1078:17 [INFO] [stderr] | [INFO] [stderr] 1078 | pro &= (pro << 7); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1080:17 [INFO] [stderr] | [INFO] [stderr] 1080 | pro &= (pro << 14); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1096:17 [INFO] [stderr] | [INFO] [stderr] 1096 | pro &= (pro >> 8 ); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1098:17 [INFO] [stderr] | [INFO] [stderr] 1098 | pro &= (pro >> 16); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1105:17 [INFO] [stderr] | [INFO] [stderr] 1105 | pro &= (pro << 8); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1107:17 [INFO] [stderr] | [INFO] [stderr] 1107 | pro &= (pro << 16); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1115:17 [INFO] [stderr] | [INFO] [stderr] 1115 | pro &= (pro << 1); [INFO] [stderr] | ^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1117:17 [INFO] [stderr] | [INFO] [stderr] 1117 | pro &= (pro << 2); [INFO] [stderr] | ^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1125:17 [INFO] [stderr] | [INFO] [stderr] 1125 | pro &= (pro << 9); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1127:17 [INFO] [stderr] | [INFO] [stderr] 1127 | pro &= (pro << 18); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1135:17 [INFO] [stderr] | [INFO] [stderr] 1135 | pro &= (pro >> 7); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1137:17 [INFO] [stderr] | [INFO] [stderr] 1137 | pro &= (pro >> 14); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1145:17 [INFO] [stderr] | [INFO] [stderr] 1145 | pro &= (pro >> 1); [INFO] [stderr] | ^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1147:17 [INFO] [stderr] | [INFO] [stderr] 1147 | pro &= (pro >> 2); [INFO] [stderr] | ^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1155:17 [INFO] [stderr] | [INFO] [stderr] 1155 | pro &= (pro >> 9); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1157:17 [INFO] [stderr] | [INFO] [stderr] 1157 | pro &= (pro >> 18); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1165:17 [INFO] [stderr] | [INFO] [stderr] 1165 | pro &= (pro << 7); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around assigned value [INFO] [stderr] --> src/tables.rs:1167:17 [INFO] [stderr] | [INFO] [stderr] 1167 | pro &= (pro << 14); [INFO] [stderr] | ^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] warning: unnecessary parentheses around `if` condition [INFO] [stderr] --> src/zobrist.rs:213:12 [INFO] [stderr] | [INFO] [stderr] 213 | if (probed_entry.key.unwrap() ^ probed_entry.entry.unwrap() == hash.unwrap()) { [INFO] [stderr] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses [INFO] [stderr] [INFO] [stderr] error: aborting due to 8 previous errors; 47 warnings emitted [INFO] [stderr] [INFO] [stderr] Some errors have detailed explanations: E0432, E0554, E0557. [INFO] [stderr] For more information about an error, try `rustc --explain E0432`. [INFO] [stderr] error: could not compile `feldspar2`. [INFO] [stderr] [INFO] [stderr] To learn more, run the command again with --verbose. [INFO] running `"docker" "inspect" "7cb6c979e591c8a321708e200a83392fadec6f5205f2868a475348cb1008beea"` [INFO] running `"docker" "rm" "-f" "7cb6c979e591c8a321708e200a83392fadec6f5205f2868a475348cb1008beea"` [INFO] [stdout] 7cb6c979e591c8a321708e200a83392fadec6f5205f2868a475348cb1008beea