[INFO] cloning repository https://github.com/bennufactory/FabChess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bennufactory/FabChess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbennufactory%2FFabChess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbennufactory%2FFabChess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 866f9f3a79c9a22681cc989799ed58357d3ecc01
[INFO] documenting bennufactory/FabChess against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbennufactory%2FFabChess" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bennufactory/FabChess on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bennufactory/FabChess
[INFO] finished tweaking git repo https://github.com/bennufactory/FabChess
[INFO] tweaked toml for git repo https://github.com/bennufactory/FabChess written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/bennufactory/FabChess already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1ff5bd6c70b6093fe5516980670055dca627ecac4c8909d7a3a31acfb6a09f6d
[INFO] running `Command { std: "docker" "start" "-a" "1ff5bd6c70b6093fe5516980670055dca627ecac4c8909d7a3a31acfb6a09f6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1ff5bd6c70b6093fe5516980670055dca627ecac4c8909d7a3a31acfb6a09f6d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ff5bd6c70b6093fe5516980670055dca627ecac4c8909d7a3a31acfb6a09f6d", kill_on_drop: false }`
[INFO] [stdout] 1ff5bd6c70b6093fe5516980670055dca627ecac4c8909d7a3a31acfb6a09f6d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "RUSTDOCFLAGS=--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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68a884442e5860fc2f67fa57e774ff9c05a33d304ffa8192e5a117d05ae00caf
[INFO] running `Command { std: "docker" "start" "-a" "68a884442e5860fc2f67fa57e774ff9c05a33d304ffa8192e5a117d05ae00caf", kill_on_drop: false }`
[INFO] [stderr]     Checking futures v0.1.28
[INFO] [stderr]     Checking smallvec v0.6.10
[INFO] [stderr]    Compiling syn v0.15.39
[INFO] [stderr]     Checking arc-swap v0.3.11
[INFO] [stderr]     Checking crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]     Checking num_cpus v1.10.1
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking hostname v0.1.5
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking signal-hook-registry v1.0.1
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking crossbeam-queue v0.1.2
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking signal-hook v0.1.9
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking crossbeam-deque v0.7.1
[INFO] [stderr]     Checking tokio-executor v0.1.8
[INFO] [stderr]     Checking tokio-io v0.1.12
[INFO] [stderr]     Checking tokio-sync v0.1.6
[INFO] [stderr]     Checking tokio-threadpool v0.1.15
[INFO] [stderr]     Checking tokio-timer v0.2.11
[INFO] [stderr]     Checking tokio-current-thread v0.1.6
[INFO] [stderr]     Checking tokio-reactor v0.1.9
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking tokio-fs v0.1.6
[INFO] [stderr]     Checking chrono v0.4.9
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-signal v0.2.7
[INFO] [stderr]     Checking tokio-process v0.2.4
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]    Compiling serde_derive v1.0.94
[INFO] [stderr]     Checking serde v1.0.94
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking FabChess v1.12.8 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting FabChess v1.12.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/evaluation/mod.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |             (psqt_w - psqt_b)
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/move_generation/magic.rs:215:5
[INFO] [stdout]     |
[INFO] [stdout] 215 | /     (((RANKS[square / 8] & !(FILES[0] | FILES[7])) | (FILES[square % 8] & !(RANKS[0] | RANKS[7])))
[INFO] [stdout] 216 | |         & NOT_SQUARES[square])
[INFO] [stdout]     | |______________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 215 |     ((RANKS[square / 8] & !(FILES[0] | FILES[7])) | (FILES[square % 8] & !(RANKS[0] | RANKS[7])))
[INFO] [stdout] 216 |         & NOT_SQUARES[square]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/evaluation/mod.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |             (psqt_w - psqt_b)
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/move_generation/magic.rs:215:5
[INFO] [stdout]     |
[INFO] [stdout] 215 | /     (((RANKS[square / 8] & !(FILES[0] | FILES[7])) | (FILES[square % 8] & !(RANKS[0] | RANKS[7])))
[INFO] [stdout] 216 | |         & NOT_SQUARES[square])
[INFO] [stdout]     | |______________________________^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 215 |     ((RANKS[square / 8] & !(FILES[0] | FILES[7])) | (FILES[square % 8] & !(RANKS[0] | RANKS[7])))
[INFO] [stdout] 216 |         & NOT_SQUARES[square]
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/pgn/pgn_reader.rs:295:17
[INFO] [stdout]     |
[INFO] [stdout] 295 |     type Item = (String);
[INFO] [stdout]     |                 ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/search/alphabeta.rs:545:6
[INFO] [stdout]     |
[INFO] [stdout] 545 | ) -> (i16) {
[INFO] [stdout]     |      ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/pgn/pgn_reader.rs:295:17
[INFO] [stdout]     |
[INFO] [stdout] 295 |     type Item = (String);
[INFO] [stdout]     |                 ^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/search/alphabeta.rs:545:6
[INFO] [stdout]     |
[INFO] [stdout] 545 | ) -> (i16) {
[INFO] [stdout]     |      ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/logging.rs:15:60
[INFO] [stdout]    |
[INFO] [stdout] 15 |         Err(why) => panic!("Couldn't create file, {}", why.description()),
[INFO] [stdout]    |                                                            ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/logging.rs:26:52
[INFO] [stdout]    |
[INFO] [stdout] 26 |             panic!("Something went wrong, {}", why.description())
[INFO] [stdout]    |                                                    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/misc.rs:53:42
[INFO] [stdout]    |
[INFO] [stdout] 53 |             Err(why) => panic!("{}", why.description()),
[INFO] [stdout]    |                                          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]    --> src/pgn/pgn_reader.rs:325:22
[INFO] [stdout]     |
[INFO] [stdout] 325 |                 if e.description()
[INFO] [stdout]     |                      ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `alpha`
[INFO] [stdout]    --> src/evaluation/mod.rs:112:5
[INFO] [stdout]     |
[INFO] [stdout] 112 |     alpha: i16,
[INFO] [stdout]     |     ^^^^^ help: if this is intentional, prefix it with an underscore: `_alpha`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `beta`
[INFO] [stdout]    --> src/evaluation/mod.rs:113:5
[INFO] [stdout]     |
[INFO] [stdout] 113 |     beta: i16,
[INFO] [stdout]     |     ^^^^ help: if this is intentional, prefix it with an underscore: `_beta`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]   --> src/tuning/loading.rs:89:28
[INFO] [stdout]    |
[INFO] [stdout] 89 |                     panic!(format!("Invalid split {}", fen_split[1]));
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_fmt_panic)]` on by default
[INFO] [stdout]    = note: this is no longer accepted in Rust 2021
[INFO] [stdout]    = note: the panic!() macro supports formatting, so there's no need for the format!() macro here
[INFO] [stdout] help: remove the `format!(..)` macro call
[INFO] [stdout]    |
[INFO] [stdout] 89 |                     panic!("Invalid split {}", fen_split[1]);
[INFO] [stdout]    |                           --                              --
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 11 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/benchmarking/benchmarks.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(test)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `FabChess`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name benchmarking src/benchmarking/benchmarks.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern core=/opt/rustwide/target/debug/deps/libcore-6311d64c9ca23e84.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-9f580e65d45ca254.rmeta --extern hostname=/opt/rustwide/target/debug/deps/libhostname-8a49773a7f38b3b0.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-7a342a7b267c2dfd.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-1cd1d7c65b9a3f90.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-cbe82d3ebc2ccd57.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-ad6abd387df22be1.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-f95baf53a46e27ce.rmeta --extern tokio_io=/opt/rustwide/target/debug/deps/libtokio_io-046bc0355ce169c6.rmeta --extern tokio_process=/opt/rustwide/target/debug/deps/libtokio_process-537b3f5ee4eac516.rmeta --cap-lints=warn --crate-version 1.12.8` (exit status: 1)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "68a884442e5860fc2f67fa57e774ff9c05a33d304ffa8192e5a117d05ae00caf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68a884442e5860fc2f67fa57e774ff9c05a33d304ffa8192e5a117d05ae00caf", kill_on_drop: false }`
[INFO] [stdout] 68a884442e5860fc2f67fa57e774ff9c05a33d304ffa8192e5a117d05ae00caf
