[INFO] fetching crate drone-cortex-m-svd 0.7.0...
[INFO] documenting drone-cortex-m-svd-0.7.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate drone-cortex-m-svd 0.7.0 into /workspace/builds/worker-11/source
[INFO] validating manifest of crates.io crate drone-cortex-m-svd 0.7.0 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate drone-cortex-m-svd 0.7.0
[INFO] finished tweaking crates.io crate drone-cortex-m-svd 0.7.0
[INFO] tweaked toml for crates.io crate drone-cortex-m-svd 0.7.0 written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 07d2572ac80135c85a731184506bb7796abc30f855058f99841cf17f4e08bcd5
[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" "07d2572ac80135c85a731184506bb7796abc30f855058f99841cf17f4e08bcd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "07d2572ac80135c85a731184506bb7796abc30f855058f99841cf17f4e08bcd5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "07d2572ac80135c85a731184506bb7796abc30f855058f99841cf17f4e08bcd5", kill_on_drop: false }`
[INFO] [stdout] 07d2572ac80135c85a731184506bb7796abc30f855058f99841cf17f4e08bcd5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cade6c929fbf5b5bfd2fe95da0559f9edfa3d5378fd20d10f13ed87dd980c149
[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" "cade6c929fbf5b5bfd2fe95da0559f9edfa3d5378fd20d10f13ed87dd980c149", kill_on_drop: false }`
[INFO] [stderr]     Checking syn v0.11.11
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]  Documenting drone-cortex-m-svd v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(range_contains)]
[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 `drone-cortex-m-svd`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name drone_cortex_m_svd 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 failure=/opt/rustwide/target/debug/deps/libfailure-3d0ba9b30d5da469.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-e0f26ad3a807cf6f.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-ec5e695d7e4b5284.rmeta --extern serde_xml_rs=/opt/rustwide/target/debug/deps/libserde_xml_rs-501c8c006ba92795.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-3a89c57880b62507.so --extern syn=/opt/rustwide/target/debug/deps/libsyn-5b344e73efa40b26.rmeta --cap-lints=warn --crate-version 0.7.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "cade6c929fbf5b5bfd2fe95da0559f9edfa3d5378fd20d10f13ed87dd980c149", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cade6c929fbf5b5bfd2fe95da0559f9edfa3d5378fd20d10f13ed87dd980c149", kill_on_drop: false }`
[INFO] [stdout] cade6c929fbf5b5bfd2fe95da0559f9edfa3d5378fd20d10f13ed87dd980c149