[INFO] fetching crate sse-actix-web 0.8.1...
[INFO] documenting sse-actix-web-0.8.1 against 1.46.0 for beta-1.47-rustdoc-1
[INFO] extracting crate sse-actix-web 0.8.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate sse-actix-web 0.8.1 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 sse-actix-web 0.8.1
[INFO] finished tweaking crates.io crate sse-actix-web 0.8.1
[INFO] tweaked toml for crates.io crate sse-actix-web 0.8.1 written to /workspace/builds/worker-4/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 6438b590eefb722127e5720d7aa78328152e962b6b634dd364c6ed34a7334a10
[INFO] running `Command { std: "docker" "start" "-a" "6438b590eefb722127e5720d7aa78328152e962b6b634dd364c6ed34a7334a10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6438b590eefb722127e5720d7aa78328152e962b6b634dd364c6ed34a7334a10", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6438b590eefb722127e5720d7aa78328152e962b6b634dd364c6ed34a7334a10", kill_on_drop: false }`
[INFO] [stdout] 6438b590eefb722127e5720d7aa78328152e962b6b634dd364c6ed34a7334a10
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] 20c53fc88f85a536cf29b36884c3acda5bde04a8ab2a63be09b021b4e6694179
[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" "20c53fc88f85a536cf29b36884c3acda5bde04a8ab2a63be09b021b4e6694179", kill_on_drop: false }`
[INFO] [stderr]     Checking instant v0.1.6
[INFO] [stderr]     Checking copyless v0.1.5
[INFO] [stderr]     Checking match_cfg v0.1.0
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]     Checking bytestring v0.1.5
[INFO] [stderr]     Checking lock_api v0.4.1
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]    Compiling brotli-sys v0.3.2
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]     Checking tracing v0.1.19
[INFO] [stderr]     Checking flate2 v1.0.17
[INFO] [stderr]     Checking threadpool v1.8.1
[INFO] [stderr]     Checking fxhash v0.2.1
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]    Compiling derive_more v0.99.9
[INFO] [stderr]    Compiling actix-macros v0.1.2
[INFO] [stderr]    Compiling enum-as-inner v0.3.3
[INFO] [stderr]    Compiling actix-web-codegen v0.2.2
[INFO] [stderr]     Checking parking_lot_core v0.8.0
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking hostname v0.3.1
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking actix-router v0.2.4
[INFO] [stderr]     Checking tokio v0.2.22
[INFO] [stderr]     Checking resolv-conf v0.6.3
[INFO] [stderr]     Checking parking_lot v0.11.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking tokio-util v0.2.0
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking actix-codec v0.2.0
[INFO] [stderr]     Checking actix-threadpool v0.3.3
[INFO] [stderr]     Checking brotli2 v0.3.2
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking actix-service v1.0.6
[INFO] [stderr]     Checking actix-rt v1.1.1
[INFO] [stderr]     Checking h2 v0.2.6
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking trust-dns-proto v0.18.0-alpha.2
[INFO] [stderr]     Checking actix-utils v1.0.6
[INFO] [stderr]     Checking actix-server v1.0.3
[INFO] [stderr]     Checking actix-tls v1.0.0
[INFO] [stderr]     Checking actix-testing v1.0.1
[INFO] [stderr]     Checking trust-dns-resolver v0.18.0-alpha.2
[INFO] [stderr]     Checking actix-connect v1.0.2
[INFO] [stderr]     Checking actix-http v1.0.1
[INFO] [stderr]     Checking awc v1.0.1
[INFO] [stderr]     Checking actix-web v2.0.0
[INFO] [stderr]  Documenting sse-actix-web v0.8.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0603]: module `sync` is private
[INFO] [stdout]    --> src/lib.rs:10:12
[INFO] [stdout]     |
[INFO] [stdout] 10  | use tokio::sync::mpsc::{channel, Receiver, Sender};
[INFO] [stdout]     |            ^^^^ private module
[INFO] [stdout]     |
[INFO] [stdout] note: the module `sync` is defined here
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/tokio-0.2.22/src/lib.rs:384:5
[INFO] [stdout]     |
[INFO] [stdout] 384 |     mod sync;
[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 E0603`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `sse-actix-web`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name sse_actix_web 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 actix_rt=/opt/rustwide/target/debug/deps/libactix_rt-9905d410d2b87415.rmeta --extern actix_web=/opt/rustwide/target/debug/deps/libactix_web-8e4ec6ac1ca1fbbf.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-351bc4da3a063e76.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-f56a86bd0127d3fc.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "20c53fc88f85a536cf29b36884c3acda5bde04a8ab2a63be09b021b4e6694179", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "20c53fc88f85a536cf29b36884c3acda5bde04a8ab2a63be09b021b4e6694179", kill_on_drop: false }`
[INFO] [stdout] 20c53fc88f85a536cf29b36884c3acda5bde04a8ab2a63be09b021b4e6694179