[INFO] fetching crate redox_dmi 0.1.5...
[INFO] documenting redox_dmi-0.1.5 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate redox_dmi 0.1.5 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate redox_dmi 0.1.5 on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate redox_dmi 0.1.5
[INFO] finished tweaking crates.io crate redox_dmi 0.1.5
[INFO] tweaked toml for crates.io crate redox_dmi 0.1.5 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b5541489cecb6c9a2750d63192ffac7624dea46b132b6536290de4c9063a40be
[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" "b5541489cecb6c9a2750d63192ffac7624dea46b132b6536290de4c9063a40be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b5541489cecb6c9a2750d63192ffac7624dea46b132b6536290de4c9063a40be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b5541489cecb6c9a2750d63192ffac7624dea46b132b6536290de4c9063a40be", kill_on_drop: false }`
[INFO] [stdout] b5541489cecb6c9a2750d63192ffac7624dea46b132b6536290de4c9063a40be
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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" "+1.46.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 95d5df0e2b2b6a9e9330e5b482085d39e5a2d8cb60a35b5a6f3a4e3766c0b5a9
[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" "95d5df0e2b2b6a9e9330e5b482085d39e5a2d8cb60a35b5a6f3a4e3766c0b5a9", kill_on_drop: false }`
[INFO] [stderr]  Documenting redox_dmi v0.1.5 (/opt/rustwide/workdir)
[INFO] [stderr] error: Could not document `redox_dmi`.
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:35
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![cfg_attr(not(feature = "std"), feature(alloc))]
[INFO] [stdout]   |                                   ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name dmi src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern plain=/opt/rustwide/target/debug/deps/libplain-8d80decfb695f730.rmeta --cap-lints=warn` (exit code: 1)
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "95d5df0e2b2b6a9e9330e5b482085d39e5a2d8cb60a35b5a6f3a4e3766c0b5a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95d5df0e2b2b6a9e9330e5b482085d39e5a2d8cb60a35b5a6f3a4e3766c0b5a9", kill_on_drop: false }`
[INFO] [stdout] 95d5df0e2b2b6a9e9330e5b482085d39e5a2d8cb60a35b5a6f3a4e3766c0b5a9