[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 1.54.0 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-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arturocs/letters_game 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/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-3/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" "+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-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" "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] 9047c90bf4f94b271faf42392d0a6d560dd17fdfdb43ccf2a432024b0505e822
[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" "9047c90bf4f94b271faf42392d0a6d560dd17fdfdb43ccf2a432024b0505e822", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9047c90bf4f94b271faf42392d0a6d560dd17fdfdb43ccf2a432024b0505e822", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9047c90bf4f94b271faf42392d0a6d560dd17fdfdb43ccf2a432024b0505e822", kill_on_drop: false }`
[INFO] [stdout] 9047c90bf4f94b271faf42392d0a6d560dd17fdfdb43ccf2a432024b0505e822
[INFO] running `Command { std: "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" "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] 6ec9e9fa323c5c770174d0f1c5c8c0cdc5aedc21db529379ebed3a22630793e5
[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" "6ec9e9fa323c5c770174d0f1c5c8c0cdc5aedc21db529379ebed3a22630793e5", kill_on_drop: false }`
[INFO] [stderr]    Compiling jobserver v0.1.22
[INFO] [stderr]     Checking nix v0.18.0
[INFO] [stderr]     Checking dirs-sys v0.3.6
[INFO] [stderr]     Checking khronos-egl v3.0.2
[INFO] [stderr]     Checking gethostname v0.2.1
[INFO] [stderr]     Checking getrandom v0.2.2
[INFO] [stderr]     Checking approx v0.4.0
[INFO] [stderr]     Checking ordered-float v2.1.1
[INFO] [stderr]     Checking euclid v0.22.3
[INFO] [stderr]     Checking wayland-commons v0.28.5
[INFO] [stderr]     Checking parking_lot v0.11.1
[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 mio v0.6.23
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]     Checking twox-hash v1.6.0
[INFO] [stderr]     Checking x11rb v0.8.1
[INFO] [stderr]     Checking glyph_brush_layout v0.2.1
[INFO] [stderr]     Checking naga v0.3.2
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking wayland-client v0.28.5
[INFO] [stderr]     Checking mio-extras v2.0.6
[INFO] [stderr]     Checking guillotiere v0.6.0
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]    Compiling freetype-sys v0.13.1
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling spirv_cross v0.23.1
[INFO] [stderr]     Checking bytemuck v1.5.1
[INFO] [stderr]     Checking futures-util v0.3.14
[INFO] [stderr]    Compiling servo-fontconfig-sys v5.1.0
[INFO] [stderr]     Checking wayland-cursor v0.28.5
[INFO] [stderr]     Checking wayland-protocols v0.28.5
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]     Checking gpu-alloc v0.3.0
[INFO] [stderr]     Checking gpu-descriptor v0.1.1
[INFO] [stderr] error: could not compile `nix`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustc --crate-name nix --edition=2018 /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nix-0.18.0/src/lib.rs --error-format=json --json=diagnostic-rendered-ansi --crate-type lib --emit=dep-info,metadata -C embed-bitcode=no -C debuginfo=2 -C metadata=47cd5bc770231dfb -C extra-filename=-47cd5bc770231dfb --out-dir /opt/rustwide/target/debug/deps -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-c759f8d07719039e.rmeta --extern cfg_if=/opt/rustwide/target/debug/deps/libcfg_if-20b9f5fb82bebd1b.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-07cc8c586ff03717.rmeta --cap-lints allow` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] The following warnings were emitted during compilation:
[INFO] [stderr] 
[INFO] [stderr] warning: src/wrapper.cpp:2: warning: ignoring #pragma warning  [-Wunknown-pragmas]
[INFO] [stderr] warning:     2 | #pragma warning(disable : 4996 4101)
[INFO] [stderr] warning:       | 
[INFO] [stderr] warning: c++: fatal error: Killed signal terminated program cc1plus
[INFO] [stderr] warning: compilation terminated.
[INFO] [stderr] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6ec9e9fa323c5c770174d0f1c5c8c0cdc5aedc21db529379ebed3a22630793e5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6ec9e9fa323c5c770174d0f1c5c8c0cdc5aedc21db529379ebed3a22630793e5", kill_on_drop: false }`
[INFO] [stdout] 6ec9e9fa323c5c770174d0f1c5c8c0cdc5aedc21db529379ebed3a22630793e5