[INFO] fetching crate rust_graphics_window 0.1.2...
[INFO] documenting rust_graphics_window-0.1.2 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate rust_graphics_window 0.1.2 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate rust_graphics_window 0.1.2 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 crates.io crate rust_graphics_window 0.1.2
[INFO] finished tweaking crates.io crate rust_graphics_window 0.1.2
[INFO] tweaked toml for crates.io crate rust_graphics_window 0.1.2 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate crates.io crate rust_graphics_window 0.1.2 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 rust_graphics_library_loader v0.1.3
[INFO] [stderr]   Downloaded rust_graphics_log v0.1.0
[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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] dcfcdac1cfab589e1c04cf587ff237ada7230df0ff98d94797cfe0f81f685cb9
[INFO] running `Command { std: "docker" "start" "-a" "dcfcdac1cfab589e1c04cf587ff237ada7230df0ff98d94797cfe0f81f685cb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dcfcdac1cfab589e1c04cf587ff237ada7230df0ff98d94797cfe0f81f685cb9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dcfcdac1cfab589e1c04cf587ff237ada7230df0ff98d94797cfe0f81f685cb9", kill_on_drop: false }`
[INFO] [stdout] dcfcdac1cfab589e1c04cf587ff237ada7230df0ff98d94797cfe0f81f685cb9
[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] 8e88e9234bf930af8784ea203e6bef0ff51c6fce520dde73f514b6d213725801
[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" "8e88e9234bf930af8784ea203e6bef0ff51c6fce520dde73f514b6d213725801", kill_on_drop: false }`
[INFO] [stderr]     Checking rust_graphics_log v0.1.0
[INFO] [stderr]     Checking rust_graphics_library_loader v0.1.3
[INFO] [stderr]  Documenting rust_graphics_window v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(drain_filter)]
[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 `rust_graphics_window`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name rust_graphics_window src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern bitflags=/opt/rustwide/target/debug/deps/libbitflags-7925d1bf53c9b12a.rmeta --extern libc=/opt/rustwide/target/debug/deps/liblibc-eee6c2ac64d7d901.rmeta --extern rust_graphics_library_loader=/opt/rustwide/target/debug/deps/librust_graphics_library_loader-4c04bd22d841b358.rmeta --extern rust_graphics_log=/opt/rustwide/target/debug/deps/librust_graphics_log-7269f4a4412de361.rmeta --cap-lints=warn --crate-version 0.1.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "8e88e9234bf930af8784ea203e6bef0ff51c6fce520dde73f514b6d213725801", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8e88e9234bf930af8784ea203e6bef0ff51c6fce520dde73f514b6d213725801", kill_on_drop: false }`
[INFO] [stdout] 8e88e9234bf930af8784ea203e6bef0ff51c6fce520dde73f514b6d213725801
