[INFO] fetching crate primg 0.1.0...
[INFO] documenting primg-0.1.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate primg 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate primg 0.1.0 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 crates.io crate primg 0.1.0
[INFO] finished tweaking crates.io crate primg 0.1.0
[INFO] tweaked toml for crates.io crate primg 0.1.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cesu8 v1.1.0
[INFO] [stderr]   Downloaded png v0.11.0
[INFO] [stderr]   Downloaded ascii v0.7.1
[INFO] [stderr]   Downloaded image v0.18.0
[INFO] [stderr]   Downloaded jni-sys v0.3.0
[INFO] [stderr]   Downloaded jni v0.8.1
[INFO] [stderr]   Downloaded combine v2.5.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 754e9910555cfb6da308797917825816e314d2d4cb7676bd9675fd91e3507579
[INFO] running `Command { std: "docker" "start" "-a" "754e9910555cfb6da308797917825816e314d2d4cb7676bd9675fd91e3507579", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "754e9910555cfb6da308797917825816e314d2d4cb7676bd9675fd91e3507579", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "754e9910555cfb6da308797917825816e314d2d4cb7676bd9675fd91e3507579", kill_on_drop: false }`
[INFO] [stdout] 754e9910555cfb6da308797917825816e314d2d4cb7676bd9675fd91e3507579
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] bbfe2b69a1c00d1ab055c5591b69248418ad808a9a3816b35d4c8bd4ac1f06d4
[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" "bbfe2b69a1c00d1ab055c5591b69248418ad808a9a3816b35d4c8bd4ac1f06d4", kill_on_drop: false }`
[INFO] [stderr]     Checking inflate v0.3.4
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking num-iter v0.1.41
[INFO] [stderr]     Checking num-rational v0.1.42
[INFO] [stderr]     Checking jpeg-decoder v0.1.20
[INFO] [stderr]     Checking png v0.11.0
[INFO] [stderr]     Checking image v0.18.0
[INFO] [stderr]     Checking primg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting primg v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]    --> src/shape.rs:502:9
[INFO] [stdout]     |
[INFO] [stdout] 502 |     for i in 0..n {
[INFO] [stdout]     |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `h`
[INFO] [stdout]   --> src/util.rs:40:45
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn draw_lines(buf: &mut [u8], w: usize, h: usize, a: &Color, lines: &[Scanline]) {
[INFO] [stdout]    |                                             ^ help: if this is intentional, prefix it with an underscore: `_h`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `put`
[INFO] [stdout]   --> src/core.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 |     pub fn put(&mut self, x: usize, y: usize, color: &Color) {
[INFO] [stdout]    |            ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_rgba`
[INFO] [stdout]    --> src/core.rs:192:12
[INFO] [stdout]     |
[INFO] [stdout] 192 |     pub fn to_rgba(&self) -> Rgba<u8> {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.33s
[INFO] running `Command { std: "docker" "inspect" "bbfe2b69a1c00d1ab055c5591b69248418ad808a9a3816b35d4c8bd4ac1f06d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bbfe2b69a1c00d1ab055c5591b69248418ad808a9a3816b35d4c8bd4ac1f06d4", kill_on_drop: false }`
[INFO] [stdout] bbfe2b69a1c00d1ab055c5591b69248418ad808a9a3816b35d4c8bd4ac1f06d4