[INFO] fetching crate remote-canvas 1.0.4...
[INFO] documenting remote-canvas-1.0.4 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate remote-canvas 1.0.4 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate remote-canvas 1.0.4 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate remote-canvas 1.0.4
[INFO] finished tweaking crates.io crate remote-canvas 1.0.4
[INFO] tweaked toml for crates.io crate remote-canvas 1.0.4 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-2021-08-01" "fetch" "--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 async-process v1.2.0
[INFO] [stderr]   Downloaded input_buffer v0.3.1
[INFO] [stderr]   Downloaded tokio-tungstenite v0.10.1
[INFO] [stderr]   Downloaded tungstenite v0.10.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 50bb209574475722a4f961e95aaa0c3ea61dc218540d7f01639a30b32a33ffda
[INFO] running `Command { std: "docker" "start" "-a" "50bb209574475722a4f961e95aaa0c3ea61dc218540d7f01639a30b32a33ffda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "50bb209574475722a4f961e95aaa0c3ea61dc218540d7f01639a30b32a33ffda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "50bb209574475722a4f961e95aaa0c3ea61dc218540d7f01639a30b32a33ffda", kill_on_drop: false }`
[INFO] [stdout] 50bb209574475722a4f961e95aaa0c3ea61dc218540d7f01639a30b32a33ffda
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 98c031ae530df75b44f4f589494a924650384db6ade2d57f016cbfaa472946f1
[INFO] running `Command { std: "docker" "start" "-a" "98c031ae530df75b44f4f589494a924650384db6ade2d57f016cbfaa472946f1", kill_on_drop: false }`
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking futures-io v0.3.16
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]     Checking fastrand v1.5.0
[INFO] [stderr]     Checking waker-fn v1.1.0
[INFO] [stderr]     Checking event-listener v2.5.1
[INFO] [stderr]     Checking parking v2.0.0
[INFO] [stderr]    Compiling openssl v0.10.35
[INFO] [stderr]    Compiling signal-hook v0.3.9
[INFO] [stderr]     Checking async-task v4.0.3
[INFO] [stderr]     Checking sha1 v0.6.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling value-bag v1.0.0-alpha.7
[INFO] [stderr]     Checking input_buffer v0.3.1
[INFO] [stderr]    Compiling openssl-sys v0.9.65
[INFO] [stderr]     Checking bytestring v1.0.0
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking socket2 v0.4.1
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]    Compiling ctor v0.1.20
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling actix-macros v0.1.3
[INFO] [stderr]    Compiling actix-web-codegen v0.2.2
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking futures-util v0.3.16
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking futures-lite v1.12.0
[INFO] [stderr]     Checking async-channel v1.6.1
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[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking uuid v0.5.1
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]     Checking async-executor v1.4.1
[INFO] [stderr]     Checking blocking v1.0.2
[INFO] [stderr]     Checking mio v0.6.23
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[INFO] [stderr]     Checking futures v0.3.16
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[INFO] [stderr]     Checking actix-rt v1.1.1
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[INFO] [stderr]     Checking trust-dns-proto v0.18.0-alpha.2
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[INFO] [stderr]     Checking actix-codec v0.2.0
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[INFO] [stderr]     Checking h2 v0.2.7
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[INFO] [stderr]     Checking actix-utils v2.0.0
[INFO] [stderr]     Checking actix-tls v1.0.0
[INFO] [stderr]     Checking actix-server v1.0.4
[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 remote-canvas v1.0.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0412]: cannot find type `Sender` in module `sync`
[INFO] [stdout]   --> src/canvas.rs:10:30
[INFO] [stdout]    |
[INFO] [stdout] 10 |     pub(crate) sender: sync::Sender<mpsc::Receiver<WSMessage>>,
[INFO] [stdout]    |                              ^^^^^^ not found in `sync`
[INFO] [stdout]    |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]    |
[INFO] [stdout] 1  | use async_std::channel::Sender;
[INFO] [stdout]    |
[INFO] [stdout] 1  | use crate::mpsc::Sender;
[INFO] [stdout]    |
[INFO] [stdout] 1  | use std::sync::mpsc::Sender;
[INFO] [stdout]    |
[INFO] [stdout] 1  | use tokio::sync::broadcast::Sender;
[INFO] [stdout]    |
[INFO] [stdout]      and 3 other candidates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Sender` in module `sync`
[INFO] [stdout]    --> src/websocket.rs:302:32
[INFO] [stdout]     |
[INFO] [stdout] 302 |     pub response: Option<sync::Sender<WsMessageResponse>>,
[INFO] [stdout]     |                                ^^^^^^ not found in `sync`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]     |
[INFO] [stdout] 1   | use async_std::channel::Sender;
[INFO] [stdout]     |
[INFO] [stdout] 1   | use crate::mpsc::Sender;
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::sync::mpsc::Sender;
[INFO] [stdout]     |
[INFO] [stdout] 1   | use tokio::sync::broadcast::Sender;
[INFO] [stdout]     |
[INFO] [stdout]       and 3 other candidates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Receiver` in module `sync`
[INFO] [stdout]    --> src/websocket.rs:321:25
[INFO] [stdout]     |
[INFO] [stdout] 321 |     mut receiver: sync::Receiver<mpsc::Receiver<WSMessage>>,
[INFO] [stdout]     |                         ^^^^^^^^ not found in `sync`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]     |
[INFO] [stdout] 1   | use async_std::channel::Receiver;
[INFO] [stdout]     |
[INFO] [stdout] 1   | use core::ops::Receiver;
[INFO] [stdout]     |
[INFO] [stdout] 1   | use crate::mpsc::Receiver;
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::ops::Receiver;
[INFO] [stdout]     |
[INFO] [stdout]       and 5 other candidates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Receiver` in module `sync`
[INFO] [stdout]    --> src/websocket.rs:375:21
[INFO] [stdout]     |
[INFO] [stdout] 375 |     receiver: sync::Receiver<mpsc::Receiver<WSMessage>>,
[INFO] [stdout]     |                     ^^^^^^^^ not found in `sync`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]     |
[INFO] [stdout] 1   | use async_std::channel::Receiver;
[INFO] [stdout]     |
[INFO] [stdout] 1   | use core::ops::Receiver;
[INFO] [stdout]     |
[INFO] [stdout] 1   | use crate::mpsc::Receiver;
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::ops::Receiver;
[INFO] [stdout]     |
[INFO] [stdout]       and 5 other candidates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0412]: cannot find type `Receiver` in module `sync`
[INFO] [stdout]    --> src/websocket.rs:389:21
[INFO] [stdout]     |
[INFO] [stdout] 389 |     receiver: sync::Receiver<mpsc::Receiver<WSMessage>>,
[INFO] [stdout]     |                     ^^^^^^^^ not found in `sync`
[INFO] [stdout]     |
[INFO] [stdout] help: consider importing one of these items
[INFO] [stdout]     |
[INFO] [stdout] 1   | use async_std::channel::Receiver;
[INFO] [stdout]     |
[INFO] [stdout] 1   | use core::ops::Receiver;
[INFO] [stdout]     |
[INFO] [stdout] 1   | use crate::mpsc::Receiver;
[INFO] [stdout]     |
[INFO] [stdout] 1   | use std::ops::Receiver;
[INFO] [stdout]     |
[INFO] [stdout]       and 5 other candidates
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 6 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0412`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `remote-canvas`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name remote_canvas 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-78e43abb620fbfc7.rmeta --extern actix_web=/opt/rustwide/target/debug/deps/libactix_web-03b51655e57bf14d.rmeta --extern async_std=/opt/rustwide/target/debug/deps/libasync_std-a85e99a8d174252c.rmeta --extern env_logger=/opt/rustwide/target/debug/deps/libenv_logger-61a2a26c5b1808a8.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-5e3de1a9c42bd1da.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-cb156d765cd610ee.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-253739828b8c95ea.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-7fe2094465ab36c6.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-5505dbc5846dce8a.rmeta --extern tokio_tungstenite=/opt/rustwide/target/debug/deps/libtokio_tungstenite-70d936fbdf6c1ee0.rmeta --extern tungstenite=/opt/rustwide/target/debug/deps/libtungstenite-a3526de01bd1542e.rmeta --extern uuid=/opt/rustwide/target/debug/deps/libuuid-8be80c3d830c4c15.rmeta --cap-lints=warn --crate-version 1.0.4` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "98c031ae530df75b44f4f589494a924650384db6ade2d57f016cbfaa472946f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "98c031ae530df75b44f4f589494a924650384db6ade2d57f016cbfaa472946f1", kill_on_drop: false }`
[INFO] [stdout] 98c031ae530df75b44f4f589494a924650384db6ade2d57f016cbfaa472946f1
