[INFO] cloning repository https://github.com/JohnnyUrosevic/chess
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/JohnnyUrosevic/chess" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJohnnyUrosevic%2Fchess", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJohnnyUrosevic%2Fchess'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c462c4da6ba729e372984a493ac54332bc6418d4
[INFO] documenting JohnnyUrosevic/chess against 1.75.0 for beta-1.76-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJohnnyUrosevic%2Fchess" "/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/JohnnyUrosevic/chess on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/JohnnyUrosevic/chess
[INFO] finished tweaking git repo https://github.com/JohnnyUrosevic/chess
[INFO] tweaked toml for git repo https://github.com/JohnnyUrosevic/chess written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/JohnnyUrosevic/chess 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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sapp-windows v0.2.19
[INFO] [stderr]   Downloaded sapp-wasm v0.1.26
[INFO] [stderr]   Downloaded miniquad v0.3.0-alpha.38
[INFO] [stderr]   Downloaded sapp-linux v0.1.13
[INFO] [stderr]   Downloaded quad-snd v0.2.3
[INFO] [stderr]   Downloaded lyon_geom v0.17.6
[INFO] [stderr]   Downloaded sapp-darwin v0.1.6
[INFO] [stderr]   Downloaded sapp-ios v0.1.2
[INFO] [stderr]   Downloaded base-x v0.2.10
[INFO] [stderr]   Downloaded sapp-dummy v0.1.5
[INFO] [stderr]   Downloaded glyph_brush v0.7.2
[INFO] [stderr]   Downloaded sapp-android v0.1.15
[INFO] [stderr]   Downloaded good-web-game v0.5.0
[INFO] [stderr]   Downloaded shakmaty v0.21.1
[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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d455668db19b2e950aa31da875ddfe7847cfcd1a7bc074a95c2e863ee464159b
[INFO] running `Command { std: "docker" "start" "-a" "d455668db19b2e950aa31da875ddfe7847cfcd1a7bc074a95c2e863ee464159b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d455668db19b2e950aa31da875ddfe7847cfcd1a7bc074a95c2e863ee464159b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d455668db19b2e950aa31da875ddfe7847cfcd1a7bc074a95c2e863ee464159b", kill_on_drop: false }`
[INFO] [stdout] d455668db19b2e950aa31da875ddfe7847cfcd1a7bc074a95c2e863ee464159b
[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=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 049ef4256a38ca75093e3607ff69765396a783abfc864294dbaa747cf523486b
[INFO] running `Command { std: "docker" "start" "-a" "049ef4256a38ca75093e3607ff69765396a783abfc864294dbaa747cf523486b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling rayon-core v1.9.3
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]     Checking arrayvec v0.5.2
[INFO] [stderr]    Compiling pkg-config v0.3.25
[INFO] [stderr]     Checking ttf-parser v0.15.0
[INFO] [stderr]     Checking euclid v0.22.7
[INFO] [stderr]    Compiling rayon v1.5.3
[INFO] [stderr]    Compiling quad-alsa-sys v0.3.2
[INFO] [stderr]     Checking ogg v0.7.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling sapp-linux v0.1.13
[INFO] [stderr]     Checking dasp_sample v0.11.0
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking dasp_frame v0.11.0
[INFO] [stderr]     Checking float_next_after v0.1.5
[INFO] [stderr]     Checking approx v0.5.1
[INFO] [stderr]     Checking sid v0.6.1
[INFO] [stderr]     Checking hound v3.4.0
[INFO] [stderr]    Compiling libudev-sys v0.1.4
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]     Checking lewton v0.9.4
[INFO] [stderr]    Compiling quad-snd v0.2.3
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]    Compiling cgmath v0.17.0
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking ordered-float v2.10.0
[INFO] [stderr]     Checking lyon_geom v0.17.6
[INFO] [stderr]    Compiling shakmaty v0.21.1
[INFO] [stderr]     Checking mint v0.5.9
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]     Checking btoi v0.4.2
[INFO] [stderr]     Checking bytemuck v1.9.1
[INFO] [stderr]     Checking image v0.22.5
[INFO] [stderr]     Checking audrey v0.3.0
[INFO] [stderr]     Checking lyon_path v0.17.7
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking filetime v0.2.16
[INFO] [stderr]     Checking lyon_tessellation v0.17.10
[INFO] [stderr]     Checking lyon_algorithms v0.17.7
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking tar v0.4.38
[INFO] [stderr]     Checking owned_ttf_parser v0.15.0
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking ab_glyph v0.2.15
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking glyph_brush_layout v0.2.3
[INFO] [stderr]     Checking lyon v0.17.10
[INFO] [stderr]     Checking miniquad v0.3.0-alpha.38
[INFO] [stderr]     Checking twox-hash v1.5.0
[INFO] [stderr]     Checking glyph_brush_draw_cache v0.1.5
[INFO] [stderr]     Checking glyph_brush v0.7.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling bytemuck_derive v1.1.0
[INFO] [stderr]    Compiling smart-default v0.6.0
[INFO] [stderr]    Compiling serde_derive v1.0.137
[INFO] [stderr]     Checking gilrs-core v0.3.2
[INFO] [stderr]     Checking gilrs v0.8.2
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking zip v0.5.13
[INFO] [stderr]     Checking good-web-game v0.5.0
[INFO] [stderr]  Documenting chess v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(option_result_contains)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(let_chains)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^
[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 `chess`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2018 --crate-type bin --crate-name chess src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items '-Arustdoc::private-intra-doc-links' -C metadata=dd8eb572845acabd -L dependency=/opt/rustwide/target/debug/deps --extern cgmath=/opt/rustwide/target/debug/deps/libcgmath-a8d40d2e122aee35.rmeta --extern good_web_game=/opt/rustwide/target/debug/deps/libgood_web_game-ce66fd806d4a7fa1.rmeta --extern mint=/opt/rustwide/target/debug/deps/libmint-1ccc9c617445d406.rmeta --extern shakmaty=/opt/rustwide/target/debug/deps/libshakmaty-3105174ecb840253.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "049ef4256a38ca75093e3607ff69765396a783abfc864294dbaa747cf523486b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "049ef4256a38ca75093e3607ff69765396a783abfc864294dbaa747cf523486b", kill_on_drop: false }`
[INFO] [stdout] 049ef4256a38ca75093e3607ff69765396a783abfc864294dbaa747cf523486b
