[INFO] fetching crate rs-jsonrpc-http-server 8.0.0...
[INFO] documenting rs-jsonrpc-http-server-8.0.0 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate rs-jsonrpc-http-server 8.0.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate rs-jsonrpc-http-server 8.0.0 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 rs-jsonrpc-http-server 8.0.0
[INFO] finished tweaking crates.io crate rs-jsonrpc-http-server 8.0.0
[INFO] tweaked toml for crates.io crate rs-jsonrpc-http-server 8.0.0 written to /workspace/builds/worker-8/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded take v0.1.0
[INFO] [stderr]   Downloaded slab v0.3.0
[INFO] [stderr]   Downloaded smallvec v0.2.1
[INFO] [stderr]   Downloaded relay v0.1.1
[INFO] [stderr]   Downloaded futures-cpupool v0.1.8
[INFO] [stderr]   Downloaded tokio-proto v0.1.1
[INFO] [stderr]   Downloaded try-lock v0.1.0
[INFO] [stderr]   Downloaded hyper v0.11.27
[INFO] [stderr]   Downloaded base64 v0.9.3
[INFO] [stderr]   Downloaded safemem v0.3.3
[INFO] [stderr]   Downloaded version_check v0.9.2
[INFO] [stderr]   Downloaded want v0.0.4
[INFO] [stderr]   Downloaded language-tags v0.2.2
[INFO] [stderr]   Downloaded rand v0.3.23
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 88952908ec91123698fa100f5a86712b66c06766bb7c46c3ba2deb0a9e9f7900
[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" "88952908ec91123698fa100f5a86712b66c06766bb7c46c3ba2deb0a9e9f7900", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "88952908ec91123698fa100f5a86712b66c06766bb7c46c3ba2deb0a9e9f7900", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "88952908ec91123698fa100f5a86712b66c06766bb7c46c3ba2deb0a9e9f7900", kill_on_drop: false }`
[INFO] [stdout] 88952908ec91123698fa100f5a86712b66c06766bb7c46c3ba2deb0a9e9f7900
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 05d527b806e8ac3d7ff143b668b5fcfe02ece4053af9a82a7f00f85ec7b844fe
[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" "05d527b806e8ac3d7ff143b668b5fcfe02ece4053af9a82a7f00f85ec7b844fe", kill_on_drop: false }`
[INFO] [stderr]     Checking slab v0.3.0
[INFO] [stderr]     Checking take v0.1.0
[INFO] [stderr]     Checking smallvec v0.2.1
[INFO] [stderr]     Checking want v0.0.4
[INFO] [stderr]     Checking rs-jsonrpc-core v8.0.0
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking globset v0.1.4
[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking tokio-proto v0.1.1
[INFO] [stderr]     Checking rs-jsonrpc-server-utils v8.0.0
[INFO] [stderr]     Checking hyper v0.11.27
[INFO] [stderr]  Documenting rs-jsonrpc-http-server v8.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/lib.rs:346:27
[INFO] [stdout]     |
[INFO] [stdout] 346 |         }).collect::<io::Result<(Vec<_>)>>()?;
[INFO] [stdout]     |                                 ^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.23s
[INFO] running `Command { std: "docker" "inspect" "05d527b806e8ac3d7ff143b668b5fcfe02ece4053af9a82a7f00f85ec7b844fe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05d527b806e8ac3d7ff143b668b5fcfe02ece4053af9a82a7f00f85ec7b844fe", kill_on_drop: false }`
[INFO] [stdout] 05d527b806e8ac3d7ff143b668b5fcfe02ece4053af9a82a7f00f85ec7b844fe