[INFO] cloning repository https://github.com/mdsteele/syzygy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mdsteele/syzygy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdsteele%2Fsyzygy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdsteele%2Fsyzygy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7b7f5ccf32035593f9f2c2bbf4d9ee99d48ca318
[INFO] documenting mdsteele/syzygy against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdsteele%2Fsyzygy" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mdsteele/syzygy on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mdsteele/syzygy
[INFO] finished tweaking git repo https://github.com/mdsteele/syzygy
[INFO] tweaked toml for git repo https://github.com/mdsteele/syzygy written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/mdsteele/syzygy already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating git repository `https://github.com/mdsteele/itersynth`
[INFO] [stderr]     Updating git repository `https://github.com/mdsteele/rust-sdl2`
[INFO] [stderr]     Updating git repository `https://github.com/mdsteele/winres`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded app_dirs v1.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5a580d6e7060954a3ebecfe6ba141eec48553cdc200e4da968f876e7e40007ac
[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" "5a580d6e7060954a3ebecfe6ba141eec48553cdc200e4da968f876e7e40007ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5a580d6e7060954a3ebecfe6ba141eec48553cdc200e4da968f876e7e40007ac", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5a580d6e7060954a3ebecfe6ba141eec48553cdc200e4da968f876e7e40007ac", kill_on_drop: false }`
[INFO] [stdout] 5a580d6e7060954a3ebecfe6ba141eec48553cdc200e4da968f876e7e40007ac
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 68797330b5b5d1f4b773704fa64e499663dcf613a45a7e6bb54fbaaa461aa36c
[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" "68797330b5b5d1f4b773704fa64e499663dcf613a45a7e6bb54fbaaa461aa36c", kill_on_drop: false }`
[INFO] [stderr]    Compiling adler32 v1.0.3
[INFO] [stderr]    Compiling num-traits v0.2.2
[INFO] [stderr]    Compiling byteorder v1.2.6
[INFO] [stderr]    Compiling bitflags v1.0.1
[INFO] [stderr]    Compiling serde v1.0.36
[INFO] [stderr]    Compiling cfg-if v0.1.2
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling itersynth v0.1.0 (https://github.com/mdsteele/itersynth?tag=v0.1.0#bc1e3ffe)
[INFO] [stderr]     Checking ahi v0.1.0 (https://github.com/mdsteele/ahi?tag=v0.1.0#8dfd2b39)
[INFO] [stderr]     Checking getopts v0.2.17
[INFO] [stderr]     Checking app_dirs v1.2.1
[INFO] [stderr]     Checking rand v0.4.2
[INFO] [stderr]    Compiling inflate v0.3.4
[INFO] [stderr]    Compiling sdl2-sys v0.31.0 (https://github.com/mdsteele/rust-sdl2?branch=hash#f277981d)
[INFO] [stderr]    Compiling deflate v0.7.19
[INFO] [stderr]     Checking rand v0.3.22
[INFO] [stderr]    Compiling num-integer v0.1.36
[INFO] [stderr]    Compiling num-iter v0.1.35
[INFO] [stderr]    Compiling png v0.11.0
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]    Compiling ico v0.1.0
[INFO] [stderr]     Checking sdl2 v0.31.0 (https://github.com/mdsteele/rust-sdl2?branch=hash#f277981d)
[INFO] [stderr]     Checking toml v0.4.5
[INFO] [stderr]    Compiling winres v0.1.6 (https://github.com/mdsteele/winres?branch=escape#d88139c3)
[INFO] [stderr]    Compiling syzygy v1.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting syzygy v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/save/puzzles/attic.rs:54:17
[INFO] [stdout]    |
[INFO] [stdout] 54 | /                 (self.is_toggled((1, 1))
[INFO] [stdout] 55 | |                     ^ self.is_toggled((2, 1))
[INFO] [stdout] 56 | |                     ^ self.is_toggled((3, 1)))
[INFO] [stdout]    | |______________________________________________^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 54 |                 self.is_toggled((1, 1))
[INFO] [stdout] 55 |                     ^ self.is_toggled((2, 1))
[INFO] [stdout] 56 |                     ^ self.is_toggled((3, 1))
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.57s
[INFO] running `Command { std: "docker" "inspect" "68797330b5b5d1f4b773704fa64e499663dcf613a45a7e6bb54fbaaa461aa36c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "68797330b5b5d1f4b773704fa64e499663dcf613a45a7e6bb54fbaaa461aa36c", kill_on_drop: false }`
[INFO] [stdout] 68797330b5b5d1f4b773704fa64e499663dcf613a45a7e6bb54fbaaa461aa36c