[INFO] fetching crate futures-async-combinators 0.3.2...
[INFO] documenting futures-async-combinators-0.3.2 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate futures-async-combinators 0.3.2 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate futures-async-combinators 0.3.2 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futures-async-combinators 0.3.2
[INFO] finished tweaking crates.io crate futures-async-combinators 0.3.2
[INFO] tweaked toml for crates.io crate futures-async-combinators 0.3.2 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate crates.io crate futures-async-combinators 0.3.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded walkdir v2.2.9
[INFO] [stderr]   Downloaded futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]   Downloaded rand_xoshiro v0.3.1
[INFO] [stderr]   Downloaded itertools v0.8.0
[INFO] [stderr]   Downloaded tinytemplate v1.0.2
[INFO] [stderr]   Downloaded criterion-plot v0.4.0
[INFO] [stderr]   Downloaded same-file v1.0.5
[INFO] [stderr]   Downloaded criterion v0.3.0
[INFO] [stderr]   Downloaded cast v0.2.2
[INFO] [stderr]   Downloaded futures-io-preview v0.3.0-alpha.19
[INFO] [stderr]   Downloaded rand_os v0.2.2
[INFO] [stderr]   Downloaded futures-preview v0.3.0-alpha.19
[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" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 16e2f3118067ab28a68633efdb26a2e5ddcaa1493c4f070046235aafaf675588
[INFO] running `Command { std: "docker" "start" "-a" "16e2f3118067ab28a68633efdb26a2e5ddcaa1493c4f070046235aafaf675588", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "16e2f3118067ab28a68633efdb26a2e5ddcaa1493c4f070046235aafaf675588", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16e2f3118067ab28a68633efdb26a2e5ddcaa1493c4f070046235aafaf675588", kill_on_drop: false }`
[INFO] [stdout] 16e2f3118067ab28a68633efdb26a2e5ddcaa1493c4f070046235aafaf675588
[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" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e63a78e706e87e5eb1232eb44be9329cb3e98c2f385d942c1b2c17f6e66fa8c
[INFO] running `Command { std: "docker" "start" "-a" "5e63a78e706e87e5eb1232eb44be9329cb3e98c2f385d942c1b2c17f6e66fa8c", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking pin-utils v0.1.0-alpha.4
[INFO] [stderr]  Documenting futures-async-combinators v0.3.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:39
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_closure, gen_future, generators)]
[INFO] [stdout]   |                                       ^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: renamed to `coroutines`
[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 E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `futures-async-combinators`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2018 --crate-type lib --crate-name futures_async_combinators src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=fd001cd11c550003 -L dependency=/opt/rustwide/target/debug/deps --extern futures_core=/opt/rustwide/target/debug/deps/libfutures_core-b83f38c3b928a774.rmeta --extern pin_utils=/opt/rustwide/target/debug/deps/libpin_utils-a00225cfe1604031.rmeta --cap-lints=warn --crate-version 0.3.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "5e63a78e706e87e5eb1232eb44be9329cb3e98c2f385d942c1b2c17f6e66fa8c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e63a78e706e87e5eb1232eb44be9329cb3e98c2f385d942c1b2c17f6e66fa8c", kill_on_drop: false }`
[INFO] [stdout] 5e63a78e706e87e5eb1232eb44be9329cb3e98c2f385d942c1b2c17f6e66fa8c
