[INFO] cloning repository https://github.com/Elements6007v2/lvgl-wasm2
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Elements6007v2/lvgl-wasm2" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElements6007v2%2Flvgl-wasm2", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElements6007v2%2Flvgl-wasm2'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3649270fade1b380f50b390331507f7320eaea7f
[INFO] documenting Elements6007v2/lvgl-wasm2 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FElements6007v2%2Flvgl-wasm2" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
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[INFO] validating manifest of git repo https://github.com/Elements6007v2/lvgl-wasm2 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Elements6007v2/lvgl-wasm2
[INFO] finished tweaking git repo https://github.com/Elements6007v2/lvgl-wasm2
[INFO] tweaked toml for git repo https://github.com/Elements6007v2/lvgl-wasm2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/Elements6007v2/lvgl-wasm2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ea6c1bd2c0491e5919b9238d2f3f6fbc70bec30be1dc9cb6f8addb359d27b3d4
[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" "ea6c1bd2c0491e5919b9238d2f3f6fbc70bec30be1dc9cb6f8addb359d27b3d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ea6c1bd2c0491e5919b9238d2f3f6fbc70bec30be1dc9cb6f8addb359d27b3d4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea6c1bd2c0491e5919b9238d2f3f6fbc70bec30be1dc9cb6f8addb359d27b3d4", kill_on_drop: false }`
[INFO] [stdout] ea6c1bd2c0491e5919b9238d2f3f6fbc70bec30be1dc9cb6f8addb359d27b3d4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", 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] 7ca5ca4e5495b351fa91ff8835dcebe8fbc780866fb9a3416a825948adf2cc43
[INFO] running `Command { std: "docker" "start" "-a" "7ca5ca4e5495b351fa91ff8835dcebe8fbc780866fb9a3416a825948adf2cc43", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.38
[INFO] [stderr]    Compiling wasm-bindgen-shared v0.2.67
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling bumpalo v3.4.0
[INFO] [stderr]    Compiling wasm-bindgen v0.2.67
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling wasm-bindgen-backend v0.2.67
[INFO] [stderr]    Compiling wasm-bindgen-macro-support v0.2.67
[INFO] [stderr]    Compiling wasm-bindgen-macro v0.2.67
[INFO] [stderr]     Checking js-sys v0.3.44
[INFO] [stderr]     Checking web-sys v0.3.44
[INFO] [stderr]  Documenting lvgl_wasm_rust v0.1.0 (/opt/rustwide/workdir/rust)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> rust/src/lib.rs:9:12
[INFO] [stdout]   |
[INFO] [stdout] 9 | #![feature(libc)]
[INFO] [stdout]   |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `lvgl_wasm_rust`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type staticlib --crate-name lvgl_wasm_rust rust/src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=8801a9122813142a -L dependency=/opt/rustwide/target/debug/deps --extern wasm_bindgen=/opt/rustwide/target/debug/deps/libwasm_bindgen-077a5f57f758d4d8.rmeta --extern web_sys=/opt/rustwide/target/debug/deps/libweb_sys-6e94b14db8860308.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "7ca5ca4e5495b351fa91ff8835dcebe8fbc780866fb9a3416a825948adf2cc43", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7ca5ca4e5495b351fa91ff8835dcebe8fbc780866fb9a3416a825948adf2cc43", kill_on_drop: false }`
[INFO] [stdout] 7ca5ca4e5495b351fa91ff8835dcebe8fbc780866fb9a3416a825948adf2cc43