[INFO] cloning repository https://github.com/mmihira/prowst
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mmihira/prowst" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmihira%2Fprowst", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmmihira%2Fprowst'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 91b833f2af64687cb1c470a5d6db2304f066e350
[INFO] documenting mmihira/prowst 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%2Fmmihira%2Fprowst" "/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/mmihira/prowst 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/mmihira/prowst
[INFO] finished tweaking git repo https://github.com/mmihira/prowst
[INFO] tweaked toml for git repo https://github.com/mmihira/prowst written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/mmihira/prowst 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 sdl2 v0.29.0
[INFO] [stderr]   Downloaded uuid v0.5.0
[INFO] [stderr]   Downloaded c_vec v1.0.12
[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" "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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 9062348ee62f56be01cd2cdd9451585bbd494fbb2e8b945ab0177fd56d712a88
[INFO] running `Command { std: "docker" "start" "-a" "9062348ee62f56be01cd2cdd9451585bbd494fbb2e8b945ab0177fd56d712a88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9062348ee62f56be01cd2cdd9451585bbd494fbb2e8b945ab0177fd56d712a88", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9062348ee62f56be01cd2cdd9451585bbd494fbb2e8b945ab0177fd56d712a88", kill_on_drop: false }`
[INFO] [stdout] 9062348ee62f56be01cd2cdd9451585bbd494fbb2e8b945ab0177fd56d712a88
[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" "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] 74eae2ff959576638a65b68d5aee371395dd14e781a5160dda75c7f200e070b6
[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" "74eae2ff959576638a65b68d5aee371395dd14e781a5160dda75c7f200e070b6", kill_on_drop: false }`
[INFO] [stderr]     Checking libc v0.2.21
[INFO] [stderr]     Checking num-traits v0.1.37
[INFO] [stderr]    Compiling sdl2-sys v0.27.2
[INFO] [stderr]     Checking bitflags v0.7.0
[INFO] [stderr]     Checking lazy_static v0.2.4
[INFO] [stderr]     Checking c_vec v1.0.12
[INFO] [stderr]     Checking rand v0.3.15
[INFO] [stderr]     Checking time v0.1.36
[INFO] [stderr]     Checking num-integer v0.1.33
[INFO] [stderr]     Checking num-iter v0.1.33
[INFO] [stderr]     Checking num v0.1.37
[INFO] [stderr]     Checking uuid v0.5.0
[INFO] [stderr]     Checking sdl2 v0.29.0
[INFO] [stderr]  Documenting prowst v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around `for` iterator expression
[INFO] [stdout]   --> src/simulation_engine/trait_update_cell_positions.rs:29:26
[INFO] [stdout]    |
[INFO] [stdout] 29 |                 for x in (0..self.buffer_width) {
[INFO] [stdout]    |                          ^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [optimized + debuginfo] target(s) in 7.57s
[INFO] running `Command { std: "docker" "inspect" "74eae2ff959576638a65b68d5aee371395dd14e781a5160dda75c7f200e070b6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "74eae2ff959576638a65b68d5aee371395dd14e781a5160dda75c7f200e070b6", kill_on_drop: false }`
[INFO] [stdout] 74eae2ff959576638a65b68d5aee371395dd14e781a5160dda75c7f200e070b6