[INFO] cloning repository https://github.com/MetaMuffin/mc-isometric-rend
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/MetaMuffin/mc-isometric-rend" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMetaMuffin%2Fmc-isometric-rend", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMetaMuffin%2Fmc-isometric-rend'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6bf0a49d8bb32517073dad2a1b70509d7bdd810a
[INFO] documenting MetaMuffin/mc-isometric-rend against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMetaMuffin%2Fmc-isometric-rend" "/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/MetaMuffin/mc-isometric-rend on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/MetaMuffin/mc-isometric-rend
[INFO] finished tweaking git repo https://github.com/MetaMuffin/mc-isometric-rend
[INFO] tweaked toml for git repo https://github.com/MetaMuffin/mc-isometric-rend written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/MetaMuffin/mc-isometric-rend already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 469e519d1e35806394b9d9325ce7e9c1756a7f48e9c7af1400a0c8317bab2c92
[INFO] running `Command { std: "docker" "start" "-a" "469e519d1e35806394b9d9325ce7e9c1756a7f48e9c7af1400a0c8317bab2c92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "469e519d1e35806394b9d9325ce7e9c1756a7f48e9c7af1400a0c8317bab2c92", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "469e519d1e35806394b9d9325ce7e9c1756a7f48e9c7af1400a0c8317bab2c92", kill_on_drop: false }`
[INFO] [stdout] 469e519d1e35806394b9d9325ce7e9c1756a7f48e9c7af1400a0c8317bab2c92
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] df918354423202e6001977dd3f38236660ef33a3c36f203c0f335a9796e7c120
[INFO] running `Command { std: "docker" "start" "-a" "df918354423202e6001977dd3f38236660ef33a3c36f203c0f335a9796e7c120", kill_on_drop: false }`
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]     Checking weezl v0.1.5
[INFO] [stderr]    Compiling zstd-safe v4.1.0+zstd.1.5.0
[INFO] [stderr]     Checking bytemuck v1.5.1
[INFO] [stderr]     Checking integer-encoding v3.0.2
[INFO] [stderr]    Compiling crossbeam-utils v0.8.4
[INFO] [stderr]    Compiling memoffset v0.6.3
[INFO] [stderr]    Compiling num-bigint v0.3.2
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking deflate v0.8.6
[INFO] [stderr]    Compiling jobserver v0.1.22
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking getrandom v0.1.16
[INFO] [stderr]     Checking integer-sqrt v0.1.5
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]     Checking gif v0.11.2
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking png v0.16.8
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling zstd-sys v1.6.0+zstd.1.5.0
[INFO] [stderr]     Checking crossbeam-epoch v0.9.4
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.0
[INFO] [stderr]     Checking rand_distr v0.2.2
[INFO] [stderr]     Checking num-rational v0.3.2
[INFO] [stderr]     Checking num v0.3.1
[INFO] [stderr]     Checking jpeg-decoder v0.1.22
[INFO] [stderr]     Checking tiff v0.6.1
[INFO] [stderr]     Checking image v0.23.14
[INFO] [stderr]     Checking imageproc v0.22.0
[INFO] [stderr]     Checking zstd v0.8.1+zstd.1.5.0
[INFO] [stderr]  Documenting mc-rend v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(cstring_from_vec_with_nul)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/main.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(array_zip)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 3 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 `mc-rend`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name mc_rend 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 byteorder=/opt/rustwide/target/debug/deps/libbyteorder-b55b8e72bfe1c077.rmeta --extern image=/opt/rustwide/target/debug/deps/libimage-696bdeddae781aec.rmeta --extern imageproc=/opt/rustwide/target/debug/deps/libimageproc-a917538d4d0f0517.rmeta --extern integer_encoding=/opt/rustwide/target/debug/deps/libinteger_encoding-24c0cf8ef8db1d58.rmeta --extern integer_sqrt=/opt/rustwide/target/debug/deps/libinteger_sqrt-9a79bac657770159.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-acd7d23482fe8b54.rmeta --extern zstd=/opt/rustwide/target/debug/deps/libzstd-a45c1c9966439b87.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "df918354423202e6001977dd3f38236660ef33a3c36f203c0f335a9796e7c120", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df918354423202e6001977dd3f38236660ef33a3c36f203c0f335a9796e7c120", kill_on_drop: false }`
[INFO] [stdout] df918354423202e6001977dd3f38236660ef33a3c36f203c0f335a9796e7c120
