[INFO] cloning repository https://github.com/mjrochford/grnd
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mjrochford/grnd" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmjrochford%2Fgrnd", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmjrochford%2Fgrnd'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b273d32c013e23c862e0f8b32351ade30aefc4d8
[INFO] documenting mjrochford/grnd against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmjrochford%2Fgrnd" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mjrochford/grnd on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mjrochford/grnd
[INFO] finished tweaking git repo https://github.com/mjrochford/grnd
[INFO] tweaked toml for git repo https://github.com/mjrochford/grnd written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/mjrochford/grnd already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded font-kit v0.7.1
[INFO] [stderr]   Downloaded plotters-bitmap v0.3.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d557237b031571e79b5c8a0be6007ed9755a2af230e2ad56d75ba7d1998554c3
[INFO] running `Command { std: "docker" "start" "-a" "d557237b031571e79b5c8a0be6007ed9755a2af230e2ad56d75ba7d1998554c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d557237b031571e79b5c8a0be6007ed9755a2af230e2ad56d75ba7d1998554c3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d557237b031571e79b5c8a0be6007ed9755a2af230e2ad56d75ba7d1998554c3", kill_on_drop: false }`
[INFO] [stdout] d557237b031571e79b5c8a0be6007ed9755a2af230e2ad56d75ba7d1998554c3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1c61315345616cc36bdfd40717e8187776ed56c1dd1791b7a93ac44bbdb56b2
[INFO] running `Command { std: "docker" "start" "-a" "d1c61315345616cc36bdfd40717e8187776ed56c1dd1791b7a93ac44bbdb56b2", kill_on_drop: false }`
[INFO] [stderr]     Checking weezl v0.1.4
[INFO] [stderr]    Compiling matrixmultiply v0.1.15
[INFO] [stderr]     Checking plotters-backend v0.3.0
[INFO] [stderr]     Checking bytemuck v1.5.0
[INFO] [stderr]     Checking rawpointer v0.1.0
[INFO] [stderr]    Compiling anyhow v1.0.38
[INFO] [stderr]     Checking float-ord v0.2.0
[INFO] [stderr]     Checking custom_derive v0.1.7
[INFO] [stderr]    Compiling num-iter v0.1.42
[INFO] [stderr]    Compiling num-rational v0.2.4
[INFO] [stderr]    Compiling cmake v0.1.45
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.9
[INFO] [stderr]     Checking inflate v0.4.5
[INFO] [stderr]     Checking deflate v0.7.20
[INFO] [stderr]     Checking stb_truetype v0.3.1
[INFO] [stderr]     Checking gif v0.10.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]    Compiling pathfinder_simd v0.5.0
[INFO] [stderr]     Checking dirs-sys v0.3.5
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking ordered-float v1.1.1
[INFO] [stderr]     Checking num-bigint v0.3.1
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking conv v0.3.3
[INFO] [stderr]     Checking gif v0.11.1
[INFO] [stderr]     Checking rusttype v0.8.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rayon-core v1.9.0
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]     Checking plotters-svg v0.3.0
[INFO] [stderr]     Checking num v0.1.42
[INFO] [stderr]     Checking rulinalg v0.4.2
[INFO] [stderr]     Checking png v0.15.3
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking num-rational v0.3.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking rayon v1.5.0
[INFO] [stderr]     Checking freetype v0.4.1
[INFO] [stderr]     Checking servo-fontconfig v0.4.0
[INFO] [stderr]     Checking pathfinder_geometry v0.5.1
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking font-kit v0.7.1
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking tiff v0.6.1
[INFO] [stderr]     Checking image v0.22.5
[INFO] [stderr]     Checking image v0.23.13
[INFO] [stderr]     Checking plotters-bitmap v0.3.0
[INFO] [stderr]     Checking imageproc v0.22.0
[INFO] [stderr]     Checking plotters v0.3.0
[INFO] [stderr]  Documenting grnd v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(iterator_fold_self)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `grnd`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name grnd src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-0f10df8acf815383.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-3cadb2c088cfe523.rmeta --extern imageproc=/opt/rustwide/target/debug/deps/libimageproc-04bf4247892e4db9.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-f56cf71ed82f214f.rmeta --extern plotters=/opt/rustwide/target/debug/deps/libplotters-0f2587d3d5ed2a29.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "d1c61315345616cc36bdfd40717e8187776ed56c1dd1791b7a93ac44bbdb56b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1c61315345616cc36bdfd40717e8187776ed56c1dd1791b7a93ac44bbdb56b2", kill_on_drop: false }`
[INFO] [stdout] d1c61315345616cc36bdfd40717e8187776ed56c1dd1791b7a93ac44bbdb56b2
