[INFO] cloning repository https://github.com/arturocs/letters_game
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arturocs/letters_game" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farturocs%2Fletters_game", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farturocs%2Fletters_game'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8089fabe5595e4313b9d13cd55102e856f2d6b41
[INFO] documenting arturocs/letters_game against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farturocs%2Fletters_game" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arturocs/letters_game on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/arturocs/letters_game
[INFO] finished tweaking git repo https://github.com/arturocs/letters_game
[INFO] tweaked toml for git repo https://github.com/arturocs/letters_game written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/arturocs/letters_game already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded owned_ttf_parser v0.12.0
[INFO] [stderr]   Downloaded ab_glyph v0.2.10
[INFO] [stderr]   Downloaded clipboard-win v4.1.0
[INFO] [stderr]   Downloaded cast v0.2.5
[INFO] [stderr]   Downloaded crossbeam-epoch v0.9.4
[INFO] [stderr]   Downloaded euclid v0.22.3
[INFO] [stderr]   Downloaded ttf-parser v0.12.0
[INFO] [stderr]   Downloaded error-code v2.2.0
[INFO] [stderr]   Downloaded str-buf v2.0.0
[INFO] [stderr]   Downloaded smithay-clipboard v0.6.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 05478a3278a34d0fee96a54a7f8ff6a186da01d172f90e45cfa03d8ca11a5a6b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "05478a3278a34d0fee96a54a7f8ff6a186da01d172f90e45cfa03d8ca11a5a6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "05478a3278a34d0fee96a54a7f8ff6a186da01d172f90e45cfa03d8ca11a5a6b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05478a3278a34d0fee96a54a7f8ff6a186da01d172f90e45cfa03d8ca11a5a6b", kill_on_drop: false }`
[INFO] [stdout] 05478a3278a34d0fee96a54a7f8ff6a186da01d172f90e45cfa03d8ca11a5a6b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e50faac257c9e3954cdca5de2a4a4a0917394319658c0aa3e8f082e137dc7fc0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e50faac257c9e3954cdca5de2a4a4a0917394319658c0aa3e8f082e137dc7fc0", kill_on_drop: false }`
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking gethostname v0.2.1
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking nom v6.1.2
[INFO] [stderr]     Checking euclid v0.22.3
[INFO] [stderr]     Checking wayland-commons v0.28.5
[INFO] [stderr]     Checking calloop v0.6.5
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling futures-macro v0.3.14
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling bytemuck_derive v1.0.1
[INFO] [stderr]     Checking glyph_brush_layout v0.2.1
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking spirv_cross v0.23.1
[INFO] [stderr]     Checking twox-hash v1.6.0
[INFO] [stderr]     Checking x11rb v0.8.1
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking wayland-client v0.28.5
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]    Compiling freetype-sys v0.13.1
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]     Checking guillotiere v0.6.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking xcursor v0.3.3
[INFO] [stderr]    Compiling servo-fontconfig-sys v5.1.0
[INFO] [stderr]     Checking bytemuck v1.5.1
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking futures-util v0.3.14
[INFO] [stderr]     Checking wayland-protocols v0.28.5
[INFO] [stderr]     Checking wayland-cursor v0.28.5
[INFO] [stderr]     Checking naga v0.3.2
[INFO] [stderr]     Checking freetype v0.7.0
[INFO] [stderr]     Checking servo-fontconfig v0.5.1
[INFO] [stderr]     Checking glyph_brush_draw_cache v0.1.4
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]     Checking font-kit v0.10.0
[INFO] [stderr]     Checking glyph_brush v0.7.2
[INFO] [stderr]     Checking gpu-descriptor v0.1.1
[INFO] [stderr]     Checking gpu-alloc v0.3.0
[INFO] [stderr]     Checking clipboard_x11 v0.3.1
[INFO] [stderr]     Checking gfx-hal v0.7.0
[INFO] [stderr]     Checking futures-executor v0.3.14
[INFO] [stderr]     Checking smithay-client-toolkit v0.12.3
[INFO] [stderr]     Checking futures v0.3.14
[INFO] [stderr]     Checking iced_futures v0.3.0
[INFO] [stderr]     Checking iced_native v0.4.0
[INFO] [stderr]     Checking smithay-clipboard v0.6.3
[INFO] [stderr]     Checking winit v0.24.0
[INFO] [stderr]     Checking clipboard_wayland v0.2.0
[INFO] [stderr]     Checking gfx-auxil v0.8.0
[INFO] [stderr]     Checking gfx-backend-vulkan v0.7.0
[INFO] [stderr]     Checking gfx-backend-empty v0.7.0
[INFO] [stderr]     Checking iced_graphics v0.2.0
[INFO] [stderr]     Checking window_clipboard v0.2.0
[INFO] [stderr]     Checking gfx-backend-gl v0.7.1
[INFO] [stderr]     Checking iced_winit v0.3.0
[INFO] [stderr]     Checking wgpu-core v0.7.1
[INFO] [stderr]     Checking wgpu v0.7.1
[INFO] [stderr]     Checking wgpu_glyph v0.11.0
[INFO] [stderr]     Checking iced_wgpu v0.4.0
[INFO] [stderr]     Checking iced v0.3.0
[INFO] [stderr]  Documenting letters v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 50.23s
[INFO] running `Command { std: "docker" "inspect" "e50faac257c9e3954cdca5de2a4a4a0917394319658c0aa3e8f082e137dc7fc0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e50faac257c9e3954cdca5de2a4a4a0917394319658c0aa3e8f082e137dc7fc0", kill_on_drop: false }`
[INFO] [stdout] e50faac257c9e3954cdca5de2a4a4a0917394319658c0aa3e8f082e137dc7fc0