[INFO] fetching crate exrng 0.1.2...
[INFO] documenting exrng-0.1.2 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate exrng 0.1.2 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate exrng 0.1.2 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 exrng 0.1.2
[INFO] finished tweaking crates.io crate exrng 0.1.2
[INFO] tweaked toml for crates.io crate exrng 0.1.2 written to /workspace/builds/worker-13/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] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "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" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd9ada732e573c5ef75115357bcdbfc7ecd43672d8884425f8a16cf268584b33
[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" "cd9ada732e573c5ef75115357bcdbfc7ecd43672d8884425f8a16cf268584b33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd9ada732e573c5ef75115357bcdbfc7ecd43672d8884425f8a16cf268584b33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd9ada732e573c5ef75115357bcdbfc7ecd43672d8884425f8a16cf268584b33", kill_on_drop: false }`
[INFO] [stdout] cd9ada732e573c5ef75115357bcdbfc7ecd43672d8884425f8a16cf268584b33
[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" "+beta-2020-10-09" "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] 45a5a3b55f2805d52704ebb3360f3ed45fe8fe131cf37881ac17fe478015c61b
[INFO] running `Command { std: "docker" "start" "-a" "45a5a3b55f2805d52704ebb3360f3ed45fe8fe131cf37881ac17fe478015c61b", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]  Documenting exrng v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: Rust code block is empty
[INFO] [stdout]   --> src/lib.rs:39:5
[INFO] [stdout]    |
[INFO] [stdout] 39 |   //! ```
[INFO] [stdout]    |  _____^
[INFO] [stdout] 40 | | //! // pub fn attach_rng<T,R>(t: T, rng: R) -> SigningTranscriptWithRng<T,R>
[INFO] [stdout] 41 | | //! // where T: SigningTranscript, R: RngCore+CryptoRng
[INFO] [stdout] 42 | | //! // {
[INFO] [stdout] ...  |
[INFO] [stdout] 46 | | //! // }
[INFO] [stdout] 47 | | //! ```
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout] help: mark blocks that do not contain Rust code as text
[INFO] [stdout]    |
[INFO] [stdout] 39 | //! ```text
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: Rust code block is empty
[INFO] [stdout]   --> src/lib.rs:50:5
[INFO] [stdout]    |
[INFO] [stdout] 50 |   //! ```
[INFO] [stdout]    |  _____^
[INFO] [stdout] 51 | | //! // rand_core = {version="0.4.2"} //!!! must 0.4.x
[INFO] [stdout] 52 | | //! // let trng_bytes = slice::from_raw_parts(random, PUB_KEY_LEN);
[INFO] [stdout] 53 | | //!    // let signature: Signature = keypair.sign(
[INFO] [stdout] ...  |
[INFO] [stdout] 59 | | //! //              ));
[INFO] [stdout] 60 | | //! ```
[INFO] [stdout]    | |_______^
[INFO] [stdout]    |
[INFO] [stdout] help: mark blocks that do not contain Rust code as text
[INFO] [stdout]    |
[INFO] [stdout] 50 | //! ```text
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.26s
[INFO] running `Command { std: "docker" "inspect" "45a5a3b55f2805d52704ebb3360f3ed45fe8fe131cf37881ac17fe478015c61b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "45a5a3b55f2805d52704ebb3360f3ed45fe8fe131cf37881ac17fe478015c61b", kill_on_drop: false }`
[INFO] [stdout] 45a5a3b55f2805d52704ebb3360f3ed45fe8fe131cf37881ac17fe478015c61b
