[INFO] fetching crate fncmd-impl 2.1.0...
[INFO] documenting fncmd-impl-2.1.0 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate fncmd-impl 2.1.0 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate fncmd-impl 2.1.0 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 fncmd-impl 2.1.0
[INFO] finished tweaking crates.io crate fncmd-impl 2.1.0
[INFO] tweaked toml for crates.io crate fncmd-impl 2.1.0 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[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] 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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 59f8451cd16b218d07a5dd32df53bf58c0412287fb5973f6e19b45d37b4810e4
[INFO] running `Command { std: "docker" "start" "-a" "59f8451cd16b218d07a5dd32df53bf58c0412287fb5973f6e19b45d37b4810e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59f8451cd16b218d07a5dd32df53bf58c0412287fb5973f6e19b45d37b4810e4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59f8451cd16b218d07a5dd32df53bf58c0412287fb5973f6e19b45d37b4810e4", kill_on_drop: false }`
[INFO] [stdout] 59f8451cd16b218d07a5dd32df53bf58c0412287fb5973f6e19b45d37b4810e4
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/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] ab974ce96d514d1ef55a0e0ab4e95e471aa3f34b7117d3ae6f9f362a8c5c09a1
[INFO] running `Command { std: "docker" "start" "-a" "ab974ce96d514d1ef55a0e0ab4e95e471aa3f34b7117d3ae6f9f362a8c5c09a1", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.160
[INFO] [stderr]    Compiling camino v1.1.4
[INFO] [stderr]    Compiling serde_json v1.0.96
[INFO] [stderr]    Compiling semver v1.0.17
[INFO] [stderr]     Checking syn v1.0.109
[INFO] [stderr]    Compiling darling_core v0.13.4
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]     Checking ident_case v1.0.1
[INFO] [stderr]     Checking ryu v1.0.13
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking strsim v0.10.0
[INFO] [stderr]     Checking itoa v1.0.6
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]    Compiling darling_macro v0.13.4
[INFO] [stderr]     Checking cargo-platform v0.1.2
[INFO] [stderr]     Checking proc-macro-error v1.0.4
[INFO] [stderr]     Checking cargo_metadata v0.15.4
[INFO] [stderr]     Checking darling v0.13.4
[INFO] [stderr]  Documenting fncmd-impl v2.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_span)]
[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 `fncmd-impl`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2021 --crate-type proc-macro --crate-name fncmd_impl src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=7603d4b4f4a462b9 -L dependency=/opt/rustwide/target/debug/deps --extern cargo_metadata=/opt/rustwide/target/debug/deps/libcargo_metadata-1909a7730c29ce4b.rmeta --extern darling=/opt/rustwide/target/debug/deps/libdarling-9c20385fff9789f1.rmeta --extern once_cell=/opt/rustwide/target/debug/deps/libonce_cell-8144794e5995c00e.rmeta --extern proc_macro_error=/opt/rustwide/target/debug/deps/libproc_macro_error-d28eb8010f8c7f9d.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-b4428f0723261f03.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-25938768891e3290.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-647fa6c941b674fe.rmeta --extern proc_macro --cap-lints=warn --crate-version 2.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ab974ce96d514d1ef55a0e0ab4e95e471aa3f34b7117d3ae6f9f362a8c5c09a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ab974ce96d514d1ef55a0e0ab4e95e471aa3f34b7117d3ae6f9f362a8c5c09a1", kill_on_drop: false }`
[INFO] [stdout] ab974ce96d514d1ef55a0e0ab4e95e471aa3f34b7117d3ae6f9f362a8c5c09a1
