[INFO] fetching crate channel-async 0.3.0-deprecated...
[INFO] documenting channel-async-0.3.0-deprecated against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate channel-async 0.3.0-deprecated into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate channel-async 0.3.0-deprecated 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 channel-async 0.3.0-deprecated
[INFO] finished tweaking crates.io crate channel-async 0.3.0-deprecated
[INFO] tweaked toml for crates.io crate channel-async 0.3.0-deprecated 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] 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] 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] c0cd70bdc9d3e33ce4096cf61b396e9678146c62e052e58e6863b1d1cb11fe20
[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" "c0cd70bdc9d3e33ce4096cf61b396e9678146c62e052e58e6863b1d1cb11fe20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c0cd70bdc9d3e33ce4096cf61b396e9678146c62e052e58e6863b1d1cb11fe20", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c0cd70bdc9d3e33ce4096cf61b396e9678146c62e052e58e6863b1d1cb11fe20", kill_on_drop: false }`
[INFO] [stdout] c0cd70bdc9d3e33ce4096cf61b396e9678146c62e052e58e6863b1d1cb11fe20
[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] 597dc1a80e5ca100585a5033a9e99cfff994ba31135a89e25227550b6bede919
[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" "597dc1a80e5ca100585a5033a9e99cfff994ba31135a89e25227550b6bede919", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-core v0.3.16
[INFO] [stderr]    Compiling futures-channel v0.3.16
[INFO] [stderr]     Checking futures-sink v0.3.16
[INFO] [stderr]     Checking futures-io v0.3.16
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking backtrace v0.3.61
[INFO] [stderr]    Compiling futures-macro v0.3.16
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking futures-util v0.3.16
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking futures-executor v0.3.16
[INFO] [stderr]     Checking futures v0.3.16
[INFO] [stderr]  Documenting channel-async v0.3.0-deprecated (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `tokio::timer`
[INFO] [stdout]  --> src/receiver.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | use tokio::timer::Delay;
[INFO] [stdout]   |            ^^^^^ could not find `timer` in `tokio`
[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 E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `channel-async`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name channel_async 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 crossbeam_channel=/opt/rustwide/target/debug/deps/libcrossbeam_channel-0f9f1c2598365a35.rmeta --extern failure=/opt/rustwide/target/debug/deps/libfailure-a1f54d67741f8ef0.rmeta --extern failure_derive=/opt/rustwide/target/debug/deps/libfailure_derive-ec8ab72ea5448c52.so --extern futures=/opt/rustwide/target/debug/deps/libfutures-c8d61cb70fe4639c.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-24c03ba210ad2142.rmeta --cap-lints=warn --crate-version 0.3.0-deprecated` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "597dc1a80e5ca100585a5033a9e99cfff994ba31135a89e25227550b6bede919", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "597dc1a80e5ca100585a5033a9e99cfff994ba31135a89e25227550b6bede919", kill_on_drop: false }`
[INFO] [stdout] 597dc1a80e5ca100585a5033a9e99cfff994ba31135a89e25227550b6bede919
