[INFO] fetching crate rsquery 0.1.1...
[INFO] documenting rsquery-0.1.1 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate rsquery 0.1.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate rsquery 0.1.1 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 rsquery 0.1.1
[INFO] finished tweaking crates.io crate rsquery 0.1.1
[INFO] tweaked toml for crates.io crate rsquery 0.1.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "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" "+1.75.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 783ca2eee0639a891277df3f11591cc9b2353e71cf1ffddafda8c1d0467192c9
[INFO] running `Command { std: "docker" "start" "-a" "783ca2eee0639a891277df3f11591cc9b2353e71cf1ffddafda8c1d0467192c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "783ca2eee0639a891277df3f11591cc9b2353e71cf1ffddafda8c1d0467192c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "783ca2eee0639a891277df3f11591cc9b2353e71cf1ffddafda8c1d0467192c9", kill_on_drop: false }`
[INFO] [stdout] 783ca2eee0639a891277df3f11591cc9b2353e71cf1ffddafda8c1d0467192c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] c5fd6971c1816cb974711fa30e563251508ad0cfd4f7bfb7086cfcd9bd4fbfd6
[INFO] running `Command { std: "docker" "start" "-a" "c5fd6971c1816cb974711fa30e563251508ad0cfd4f7bfb7086cfcd9bd4fbfd6", kill_on_drop: false }`
[INFO] [stderr]    Compiling parking_lot_core v0.9.9
[INFO] [stderr]     Checking smallvec v1.11.2
[INFO] [stderr]     Checking scopeguard v1.2.0
[INFO] [stderr]     Checking pin-project-lite v0.2.13
[INFO] [stderr]     Checking bytes v1.5.0
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling lock_api v0.4.11
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking signal-hook-registry v1.4.1
[INFO] [stderr]     Checking socket2 v0.5.5
[INFO] [stderr]     Checking mio v0.8.10
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling actix-macros v0.2.4
[INFO] [stderr]     Checking tokio v1.35.1
[INFO] [stderr]     Checking actix-rt v2.9.0
[INFO] [stderr]  Documenting rsquery v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_closure)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `rsquery`
[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 rsquery src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=747c31200bfd71d2 -L dependency=/opt/rustwide/target/debug/deps --extern actix_rt=/opt/rustwide/target/debug/deps/libactix_rt-405775aa1df8b291.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-7620dcb02882a88c.rmeta --extern hex=/opt/rustwide/target/debug/deps/libhex-154257be2cdb5bdc.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-7c14306ccbf0b227.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-81fa6e676c3eb005.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "c5fd6971c1816cb974711fa30e563251508ad0cfd4f7bfb7086cfcd9bd4fbfd6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5fd6971c1816cb974711fa30e563251508ad0cfd4f7bfb7086cfcd9bd4fbfd6", kill_on_drop: false }`
[INFO] [stdout] c5fd6971c1816cb974711fa30e563251508ad0cfd4f7bfb7086cfcd9bd4fbfd6
