[INFO] fetching crate cobweb 0.2.2...
[INFO] documenting cobweb-0.2.2 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate cobweb 0.2.2 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate cobweb 0.2.2 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate cobweb 0.2.2
[INFO] finished tweaking crates.io crate cobweb 0.2.2
[INFO] tweaked toml for crates.io crate cobweb 0.2.2 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded zeroize v0.5.2
[INFO] [stderr]   Downloaded keybob v0.3.1
[INFO] [stderr]   Downloaded pmac v0.2.0
[INFO] [stderr]   Downloaded pbkdf2 v0.2.3
[INFO] [stderr]   Downloaded miscreant v0.4.2
[INFO] [stderr]   Downloaded tun-tap v0.1.2
[INFO] [stderr]   Downloaded tun-tap-mac v0.1.2
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "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] 49abafc446fe63d573184c6bf1a97c7b78220cb666cda5283e4c19d374c61363
[INFO] running `Command { std: "docker" "start" "-a" "49abafc446fe63d573184c6bf1a97c7b78220cb666cda5283e4c19d374c61363", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "49abafc446fe63d573184c6bf1a97c7b78220cb666cda5283e4c19d374c61363", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "49abafc446fe63d573184c6bf1a97c7b78220cb666cda5283e4c19d374c61363", kill_on_drop: false }`
[INFO] [stdout] 49abafc446fe63d573184c6bf1a97c7b78220cb666cda5283e4c19d374c61363
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c30322f76e559e5249aad80528dccfe8349a96fa1363f812ccdde5904ce63f4c
[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" "c30322f76e559e5249aad80528dccfe8349a96fa1363f812ccdde5904ce63f4c", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: only one of `license` or `license-file` is necessary
[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]     Checking zeroize v0.5.2
[INFO] [stderr]    Compiling tun-tap v0.1.2
[INFO] [stderr]    Compiling tun-tap-mac v0.1.2
[INFO] [stderr]     Checking dbl v0.2.1
[INFO] [stderr]     Checking stream-cipher v0.3.2
[INFO] [stderr]     Checking crypto-mac v0.6.2
[INFO] [stderr]     Checking crypto-mac v0.5.2
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking ctr v0.3.2
[INFO] [stderr]     Checking blake2 v0.7.1
[INFO] [stderr]     Checking hmac v0.6.3
[INFO] [stderr]     Checking pmac v0.2.0
[INFO] [stderr]     Checking cmac v0.2.0
[INFO] [stderr]     Checking pbkdf2 v0.2.3
[INFO] [stderr]     Checking miscreant v0.4.2
[INFO] [stderr]     Checking keybob v0.3.1
[INFO] [stderr]  Documenting cobweb v0.2.2 (/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(trivial_bounds)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(unboxed_closures)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(fn_traits)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 4 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 `cobweb`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name cobweb 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 futures=/opt/rustwide/target/debug/deps/libfutures-75c56670229df1bb.rmeta --extern keybob=/opt/rustwide/target/debug/deps/libkeybob-04ddfe4757f33832.rmeta --extern miscreant=/opt/rustwide/target/debug/deps/libmiscreant-a4dfeac42246c3bb.rmeta --extern tokio_core=/opt/rustwide/target/debug/deps/libtokio_core-4e70da6b6a88c5cb.rmeta --extern tun_tap=/opt/rustwide/target/debug/deps/libtun_tap-e06bfdd71ce0a855.rmeta --extern tun_tap_mac=/opt/rustwide/target/debug/deps/libtun_tap_mac-c655873a9dc21a74.rmeta --cap-lints=warn --crate-version 0.2.2` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "c30322f76e559e5249aad80528dccfe8349a96fa1363f812ccdde5904ce63f4c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c30322f76e559e5249aad80528dccfe8349a96fa1363f812ccdde5904ce63f4c", kill_on_drop: false }`
[INFO] [stdout] c30322f76e559e5249aad80528dccfe8349a96fa1363f812ccdde5904ce63f4c
