[INFO] cloning repository https://github.com/efyang/conway-piston
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/efyang/conway-piston" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fefyang%2Fconway-piston", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fefyang%2Fconway-piston'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 17714e7a8c2065554a20713ce6150807c6294947
[INFO] documenting efyang/conway-piston 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%2Fefyang%2Fconway-piston" "/workspace/builds/worker-20/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-20/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/efyang/conway-piston 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/efyang/conway-piston
[INFO] finished tweaking git repo https://github.com/efyang/conway-piston
[INFO] tweaked toml for git repo https://github.com/efyang/conway-piston written to /workspace/builds/worker-20/source/Cargo.toml
[INFO] crate git repo https://github.com/efyang/conway-piston 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bitflags v0.3.2
[INFO] [stderr]   Downloaded x11-dl v2.0.1
[INFO] [stderr]   Downloaded pistoncore-window v0.9.1
[INFO] [stderr]   Downloaded pistoncore-glutin_window v0.12.0
[INFO] [stderr]   Downloaded tempfile v1.1.1
[INFO] [stderr]   Downloaded cocoa v0.1.3
[INFO] [stderr]   Downloaded log v0.3.2
[INFO] [stderr]   Downloaded gl_generator v0.0.26
[INFO] [stderr]   Downloaded wayland-kbd v0.2.0
[INFO] [stderr]   Downloaded shared_library v0.1.0
[INFO] [stderr]   Downloaded malloc_buf v0.0.5
[INFO] [stderr]   Downloaded glutin v0.3.5
[INFO] [stderr]   Downloaded freetype-sys v0.1.2
[INFO] [stderr]   Downloaded clock_ticks v0.0.6
[INFO] [stderr]   Downloaded pistoncore-event_loop v0.10.1
[INFO] [stderr]   Downloaded piston v0.10.1
[INFO] [stderr]   Downloaded piston-viewport v0.1.0
[INFO] [stderr]   Downloaded pistoncore-input v0.5.1
[INFO] [stderr]   Downloaded core-graphics v0.1.0
[INFO] [stderr]   Downloaded gleam v0.1.9
[INFO] [stderr]   Downloaded gl v0.0.12
[INFO] [stderr]   Downloaded pkg-config v0.3.5
[INFO] [stderr]   Downloaded clap v1.4.0
[INFO] [stderr]   Downloaded ansi_term v0.6.3
[INFO] [stderr]   Downloaded image v0.3.12
[INFO] [stderr]   Downloaded piston-float v0.1.0
[INFO] [stderr]   Downloaded flate2 v0.2.8
[INFO] [stderr]   Downloaded freetype-rs v0.3.0
[INFO] [stderr]   Downloaded strsim v0.4.0
[INFO] [stderr]   Downloaded gl_common v0.0.4
[INFO] [stderr]   Downloaded objc v0.1.6
[INFO] [stderr]   Downloaded libz-sys v0.1.8
[INFO] [stderr]   Downloaded khronos_api v0.0.7
[INFO] [stderr]   Downloaded piston2d-opengl_graphics v0.10.0
[INFO] [stderr]   Downloaded piston2d-graphics v0.8.0
[INFO] [stderr]   Downloaded piston-texture v0.2.3
[INFO] [stderr]   Downloaded vecmath v0.1.1
[INFO] [stderr]   Downloaded gl_generator v0.0.27
[INFO] [stderr]   Downloaded android_glue v0.0.2
[INFO] [stderr]   Downloaded cgl v0.1.0
[INFO] [stderr]   Downloaded core-foundation v0.1.0
[INFO] [stderr]   Downloaded wayland-client v0.2.1
[INFO] [stderr]   Downloaded dlib v0.1.1
[INFO] [stderr]   Downloaded png v0.3.1
[INFO] [stderr]   Downloaded khronos_api v0.0.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] fa005da7e7589e9b20e2061128b6cf16cae0674c822455307a4fe2b77c258dae
[INFO] running `Command { std: "docker" "start" "-a" "fa005da7e7589e9b20e2061128b6cf16cae0674c822455307a4fe2b77c258dae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa005da7e7589e9b20e2061128b6cf16cae0674c822455307a4fe2b77c258dae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa005da7e7589e9b20e2061128b6cf16cae0674c822455307a4fe2b77c258dae", kill_on_drop: false }`
[INFO] [stdout] fa005da7e7589e9b20e2061128b6cf16cae0674c822455307a4fe2b77c258dae
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-20/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] 3bc0ca191842cfb67f0b6cfa1f452535e599d42e0a5e7dc0062e25504aa46a49
[INFO] running `Command { std: "docker" "start" "-a" "3bc0ca191842cfb67f0b6cfa1f452535e599d42e0a5e7dc0062e25504aa46a49", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.1.10
[INFO] [stderr]     Checking bitflags v0.3.2
[INFO] [stderr]     Checking winapi v0.2.2
[INFO] [stderr]    Compiling gcc v0.3.13
[INFO] [stderr]     Checking rustc-serialize v0.3.16
[INFO] [stderr]     Checking piston-float v0.1.0
[INFO] [stderr]    Compiling khronos_api v0.0.5
[INFO] [stderr]    Compiling pkg-config v0.3.5
[INFO] [stderr]     Checking lazy_static v0.1.14
[INFO] [stderr]    Compiling khronos_api v0.0.8
[INFO] [stderr]     Checking byteorder v0.3.13
[INFO] [stderr]    Compiling khronos_api v0.0.7
[INFO] [stderr]     Checking bitflags v0.1.1
[INFO] [stderr]     Checking glob v0.2.10
[INFO] [stderr]     Checking piston-texture v0.2.3
[INFO] [stderr]     Checking piston-shaders_graphics2d v0.1.0
[INFO] [stderr]     Checking ansi_term v0.6.3
[INFO] [stderr]     Checking strsim v0.4.0
[INFO] [stderr]    Compiling advapi32-sys v0.1.2
[INFO] [stderr]    Compiling kernel32-sys v0.1.4
[INFO] [stdout] error[E0642]: patterns aren't allowed in functions without bodies
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc-serialize-0.3.16/src/serialize.rs:145:45
[INFO] [stdout]     |
[INFO] [stdout] 145 | ...                   &f_name: &str,
[INFO] [stdout]     |                       ^^^^^^^ pattern not allowed in function without body
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking draw_state v0.2.0
[INFO] [stderr]     Checking piston-viewport v0.1.0
[INFO] [stderr]     Checking vecmath v0.1.1
[INFO] [stderr]    Compiling log v0.3.2
[INFO] [stderr]    Compiling xml-rs v0.1.26
[INFO] [stderr]    Compiling freetype-sys v0.1.2
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0642`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rustc-serialize`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "3bc0ca191842cfb67f0b6cfa1f452535e599d42e0a5e7dc0062e25504aa46a49", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3bc0ca191842cfb67f0b6cfa1f452535e599d42e0a5e7dc0062e25504aa46a49", kill_on_drop: false }`
[INFO] [stdout] 3bc0ca191842cfb67f0b6cfa1f452535e599d42e0a5e7dc0062e25504aa46a49