[INFO] cloning repository https://github.com/cowboy8625/RustRain
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/cowboy8625/RustRain" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcowboy8625%2FRustRain", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcowboy8625%2FRustRain'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 81258c4911c7b98e5c32afd85d58318df0ab66ce
[INFO] documenting cowboy8625/RustRain 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%2Fcowboy8625%2FRustRain" "/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/cowboy8625/RustRain 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/cowboy8625/RustRain
[INFO] finished tweaking git repo https://github.com/cowboy8625/RustRain
[INFO] tweaked toml for git repo https://github.com/cowboy8625/RustRain written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/cowboy8625/RustRain 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]  Downloading crates ...
[INFO] [stderr]   Downloaded crossterm v0.13.3
[INFO] [stderr]   Downloaded terminal_size v0.1.8
[INFO] [stderr]   Downloaded crossterm_winapi v0.4.0
[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] 8d9c66834dae491db2b00f30498e7c2a05e168430a7bdae346e53483b97af390
[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" "8d9c66834dae491db2b00f30498e7c2a05e168430a7bdae346e53483b97af390", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d9c66834dae491db2b00f30498e7c2a05e168430a7bdae346e53483b97af390", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d9c66834dae491db2b00f30498e7c2a05e168430a7bdae346e53483b97af390", kill_on_drop: false }`
[INFO] [stdout] 8d9c66834dae491db2b00f30498e7c2a05e168430a7bdae346e53483b97af390
[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] a7b1788d1e7d70e46fd7de6c41a20fe3f0097cd32d8139f1a69f54f5c046398d
[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" "a7b1788d1e7d70e46fd7de6c41a20fe3f0097cd32d8139f1a69f54f5c046398d", kill_on_drop: false }`
[INFO] [stderr]     Checking terminal_size v0.1.8
[INFO] [stderr]     Checking crossterm v0.13.3
[INFO] [stderr]  Documenting matrix_rain v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around function argument
[INFO] [stdout]    --> src/main.rs:186:34
[INFO] [stdout]     |
[INFO] [stdout] 186 |             rgbv.insert(0, clamp((255 - (x * (255 / self.length)) as u8), 0, 255));
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]    --> src/main.rs:269:18
[INFO] [stdout]     |
[INFO] [stdout] 269 |         for _ in (0..amount) {
[INFO] [stdout]     |                  ^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.84s
[INFO] running `Command { std: "docker" "inspect" "a7b1788d1e7d70e46fd7de6c41a20fe3f0097cd32d8139f1a69f54f5c046398d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7b1788d1e7d70e46fd7de6c41a20fe3f0097cd32d8139f1a69f54f5c046398d", kill_on_drop: false }`
[INFO] [stdout] a7b1788d1e7d70e46fd7de6c41a20fe3f0097cd32d8139f1a69f54f5c046398d