[INFO] fetching crate ak-rt 0.1.1...
[INFO] documenting ak-rt-0.1.1 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate ak-rt 0.1.1 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate ak-rt 0.1.1 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ak-rt 0.1.1
[INFO] finished tweaking crates.io crate ak-rt 0.1.1
[INFO] tweaked toml for crates.io crate ak-rt 0.1.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-executor v0.2.0-alpha.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3e2c1b279ea3571176edb7ad088aeceb875ba92ed8a28501f3dc6b10626884ca
[INFO] running `Command { std: "docker" "start" "-a" "3e2c1b279ea3571176edb7ad088aeceb875ba92ed8a28501f3dc6b10626884ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3e2c1b279ea3571176edb7ad088aeceb875ba92ed8a28501f3dc6b10626884ca", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3e2c1b279ea3571176edb7ad088aeceb875ba92ed8a28501f3dc6b10626884ca", kill_on_drop: false }`
[INFO] [stdout] 3e2c1b279ea3571176edb7ad088aeceb875ba92ed8a28501f3dc6b10626884ca
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 368cfc3adc824adc504c0f0ac49a2f0ef0b2acff3e37e6b37a2ed8bb8f8ab64c
[INFO] running `Command { std: "docker" "start" "-a" "368cfc3adc824adc504c0f0ac49a2f0ef0b2acff3e37e6b37a2ed8bb8f8ab64c", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking tokio-executor v0.2.0-alpha.6
[INFO] [stderr]  Documenting ak-rt v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `tokio::prelude::Future`
[INFO] [stdout]  --> src/lib.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tokio::prelude::Future;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^ no `Future` in `prelude`
[INFO] [stdout]   |
[INFO] [stdout] help: consider importing one of these items instead
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core::future::Future;
[INFO] [stdout]   |     ~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 1 | use std::future::Future;
[INFO] [stdout]   |     ~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 1 | use tokio::future::MaybeDone::Future;
[INFO] [stdout]   |     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 1 | use tokio::macros::support::Future;
[INFO] [stdout]   |     ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0432]: unresolved import `tokio::spawn`
[INFO] [stdout]    --> src/lib.rs:2:5
[INFO] [stdout]     |
[INFO] [stdout] 2   | use tokio::spawn;
[INFO] [stdout]     |     ^^^^^^^^^^^^ no `spawn` in the root
[INFO] [stdout]     |
[INFO] [stdout] note: found an item that was configured out
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/tokio-0.2.25/src/lib.rs:390:19
[INFO] [stdout]     |
[INFO] [stdout] 390 |     pub use task::spawn;
[INFO] [stdout]     |                   ^^^^^
[INFO] [stdout]     = note: the item is gated behind the `rt-core` feature
[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 `ak-rt`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2018 --crate-type lib --crate-name ak_rt src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=dc2f808afcaa4004 -L dependency=/opt/rustwide/target/debug/deps --extern tokio=/opt/rustwide/target/debug/deps/libtokio-51041d5c2bc27baf.rmeta --extern tokio_executor=/opt/rustwide/target/debug/deps/libtokio_executor-d70a896e4fe98289.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "368cfc3adc824adc504c0f0ac49a2f0ef0b2acff3e37e6b37a2ed8bb8f8ab64c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "368cfc3adc824adc504c0f0ac49a2f0ef0b2acff3e37e6b37a2ed8bb8f8ab64c", kill_on_drop: false }`
[INFO] [stdout] 368cfc3adc824adc504c0f0ac49a2f0ef0b2acff3e37e6b37a2ed8bb8f8ab64c
