[INFO] fetching crate picoserve 0.2.3...
[INFO] documenting picoserve-0.2.3 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate picoserve 0.2.3 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate picoserve 0.2.3 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] removed /workspace/builds/worker-6-tc1/source/rust-toolchain.toml
[INFO] started tweaking crates.io crate picoserve 0.2.3
[INFO] finished tweaking crates.io crate picoserve 0.2.3
[INFO] tweaked toml for crates.io crate picoserve 0.2.3 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded hash32 v0.3.1
[INFO] [stderr]   Downloaded heapless v0.8.0
[INFO] [stderr]   Downloaded embedded-io-async v0.6.1
[INFO] [stderr]   Downloaded lhash v1.1.0
[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] 9e0dc545f98042233e76e4e48903acc8d446a5e8e30b29f6e951898986a244da
[INFO] running `Command { std: "docker" "start" "-a" "9e0dc545f98042233e76e4e48903acc8d446a5e8e30b29f6e951898986a244da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e0dc545f98042233e76e4e48903acc8d446a5e8e30b29f6e951898986a244da", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e0dc545f98042233e76e4e48903acc8d446a5e8e30b29f6e951898986a244da", kill_on_drop: false }`
[INFO] [stdout] 9e0dc545f98042233e76e4e48903acc8d446a5e8e30b29f6e951898986a244da
[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] 3c6fc4384e6a8bcc5466f0a1add225d2ac4ab320409312f0ba1eb6fa1a16e1a8
[INFO] running `Command { std: "docker" "start" "-a" "3c6fc4384e6a8bcc5466f0a1add225d2ac4ab320409312f0ba1eb6fa1a16e1a8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling serde v1.0.195
[INFO] [stderr]    Compiling heapless v0.8.0
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling embedded-io-async v0.6.1
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking embedded-io v0.6.1
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking data-encoding v2.5.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking lhash v1.1.0
[INFO] [stderr]     Checking hash32 v0.3.1
[INFO] [stderr]    Compiling quote v1.0.35
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling serde_derive v1.0.195
[INFO] [stderr]  Documenting picoserve v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(async_fn_in_trait, type_alias_impl_trait)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `async_fn_in_trait` has been stable since `1.75.0` and no longer requires an attribute to enable
[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 `picoserve`
[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=2021 --crate-type lib --crate-name picoserve src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a9d1410bd63038cd -L dependency=/opt/rustwide/target/debug/deps --extern data_encoding=/opt/rustwide/target/debug/deps/libdata_encoding-4b5836a53cf091b8.rmeta --extern embedded_io_async=/opt/rustwide/target/debug/deps/libembedded_io_async-c8fe86b8fa6a7e30.rmeta --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-852c05a2cf3be346.rmeta --extern heapless=/opt/rustwide/target/debug/deps/libheapless-5c16591f0966b675.rmeta --extern lhash=/opt/rustwide/target/debug/deps/liblhash-306a360c42e3849f.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-91e42ebaf8a62e54.rmeta --extern ryu=/opt/rustwide/target/debug/deps/libryu-bf69ad52f5a61d9f.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-4dadecd56a09a54b.rmeta --cap-lints=warn --crate-version 0.2.3` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "3c6fc4384e6a8bcc5466f0a1add225d2ac4ab320409312f0ba1eb6fa1a16e1a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3c6fc4384e6a8bcc5466f0a1add225d2ac4ab320409312f0ba1eb6fa1a16e1a8", kill_on_drop: false }`
[INFO] [stdout] 3c6fc4384e6a8bcc5466f0a1add225d2ac4ab320409312f0ba1eb6fa1a16e1a8
