[INFO] fetching crate messagebus 0.12.1...
[INFO] documenting messagebus-0.12.1 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate messagebus 0.12.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate messagebus 0.12.1 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate messagebus 0.12.1
[INFO] finished tweaking crates.io crate messagebus 0.12.1
[INFO] tweaked toml for crates.io crate messagebus 0.12.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate messagebus 0.12.1 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" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded messagebus_derive v0.3.0
[INFO] [stderr]   Downloaded ctxerr_derive v0.5.1
[INFO] [stderr]   Downloaded segvec v0.1.5
[INFO] [stderr]   Downloaded ctxerr v0.2.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 82fc432480df882525995b8cc1263ee6bc0fc5dceac16fa01f440abdcada0ab4
[INFO] running `Command { std: "docker" "start" "-a" "82fc432480df882525995b8cc1263ee6bc0fc5dceac16fa01f440abdcada0ab4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "82fc432480df882525995b8cc1263ee6bc0fc5dceac16fa01f440abdcada0ab4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82fc432480df882525995b8cc1263ee6bc0fc5dceac16fa01f440abdcada0ab4", kill_on_drop: false }`
[INFO] [stdout] 82fc432480df882525995b8cc1263ee6bc0fc5dceac16fa01f440abdcada0ab4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fff8387af0ca89437e42059b61754cf8fb446d268284b877bf677629f49a8541
[INFO] running `Command { std: "docker" "start" "-a" "fff8387af0ca89437e42059b61754cf8fb446d268284b877bf677629f49a8541", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.141
[INFO] [stderr]    Compiling tokio v1.27.0
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]    Compiling crossbeam-queue v0.3.8
[INFO] [stderr]    Compiling serde v1.0.159
[INFO] [stderr]     Checking futures-channel v0.3.28
[INFO] [stderr]     Checking crossbeam-epoch v0.9.14
[INFO] [stderr]    Compiling erased-serde v0.3.25
[INFO] [stderr]     Checking crossbeam-channel v0.5.7
[INFO] [stderr]    Compiling syn v2.0.13
[INFO] [stderr]     Checking hashbrown v0.12.3
[INFO] [stderr]    Compiling messagebus_derive v0.3.0
[INFO] [stderr]     Checking segvec v0.1.5
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking crossbeam v0.8.2
[INFO] [stderr]     Checking parking_lot_core v0.9.7
[INFO] [stderr]     Checking dashmap v5.4.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking tokio-util v0.7.7
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]    Compiling ctxerr_derive v0.5.1
[INFO] [stderr]     Checking futures-util v0.3.28
[INFO] [stderr]     Checking thiserror v1.0.40
[INFO] [stderr]     Checking ctxerr v0.2.5
[INFO] [stderr]     Checking futures-executor v0.3.28
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]  Documenting messagebus v0.12.1 (/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(type_alias_impl_trait)]
[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 `messagebus`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type lib --crate-name messagebus src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=d926836232699464 -L dependency=/opt/rustwide/target/debug/deps --extern crossbeam=/opt/rustwide/target/debug/deps/libcrossbeam-2f8fc1c9f9c4f55a.rmeta --extern ctxerr=/opt/rustwide/target/debug/deps/libctxerr-8f7447d4b50c3f6d.rmeta --extern dashmap=/opt/rustwide/target/debug/deps/libdashmap-b7bef2ccda6ffe13.rmeta --extern erased_serde=/opt/rustwide/target/debug/deps/liberased_serde-16725dd97d8acd9e.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-183a8f5826696f92.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-9c7d51f549cf58b7.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-43372439ad3c157d.rmeta --extern messagebus_derive=/opt/rustwide/target/debug/deps/libmessagebus_derive-745d9afa4bdeaf4b.so --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-e4e8e149274c3b41.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-f5b9c786bd3fed62.rmeta --extern segvec=/opt/rustwide/target/debug/deps/libsegvec-1c00df8dd021b23b.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-2b7f578d0816c95c.rmeta --extern sharded_slab=/opt/rustwide/target/debug/deps/libsharded_slab-9dc654679f640e1e.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-ce9423d6e436717d.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-0ae27868bdb0ca74.rmeta --extern tokio_util=/opt/rustwide/target/debug/deps/libtokio_util-b8539a8612910fc9.rmeta --cap-lints=warn --crate-version 0.12.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "fff8387af0ca89437e42059b61754cf8fb446d268284b877bf677629f49a8541", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fff8387af0ca89437e42059b61754cf8fb446d268284b877bf677629f49a8541", kill_on_drop: false }`
[INFO] [stdout] fff8387af0ca89437e42059b61754cf8fb446d268284b877bf677629f49a8541
