[INFO] fetching crate dacquiri_derive 0.5.1...
[INFO] documenting dacquiri_derive-0.5.1 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate dacquiri_derive 0.5.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate dacquiri_derive 0.5.1 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 dacquiri_derive 0.5.1
[INFO] finished tweaking crates.io crate dacquiri_derive 0.5.1
[INFO] tweaked toml for crates.io crate dacquiri_derive 0.5.1 written to /workspace/builds/worker-7-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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] c4737577f03fe801f165c7110bdc186086c619e6ca1f1ff2f2dcb84225abda09
[INFO] running `Command { std: "docker" "start" "-a" "c4737577f03fe801f165c7110bdc186086c619e6ca1f1ff2f2dcb84225abda09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4737577f03fe801f165c7110bdc186086c619e6ca1f1ff2f2dcb84225abda09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4737577f03fe801f165c7110bdc186086c619e6ca1f1ff2f2dcb84225abda09", kill_on_drop: false }`
[INFO] [stdout] c4737577f03fe801f165c7110bdc186086c619e6ca1f1ff2f2dcb84225abda09
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] ea726a94d0cd28f23e18242e7bc226beb13a958c6ba4e12ea3d1fbb13026a000
[INFO] running `Command { std: "docker" "start" "-a" "ea726a94d0cd28f23e18242e7bc226beb13a958c6ba4e12ea3d1fbb13026a000", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]     Checking syn v1.0.109
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]     Checking thiserror v1.0.56
[INFO] [stderr]  Documenting dacquiri_derive v0.5.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(adt_const_params)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(iter_intersperse)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[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 E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `dacquiri_derive`
[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 proc-macro --crate-name dacquiri_derive src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a989b38daffcf0f4 -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-3889f6209a44556f.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-b5c91c32bf6deb64.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-82df1375c9560a74.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-4422abd86c5af033.rmeta --extern proc_macro --cap-lints=warn --crate-version 0.5.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ea726a94d0cd28f23e18242e7bc226beb13a958c6ba4e12ea3d1fbb13026a000", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ea726a94d0cd28f23e18242e7bc226beb13a958c6ba4e12ea3d1fbb13026a000", kill_on_drop: false }`
[INFO] [stdout] ea726a94d0cd28f23e18242e7bc226beb13a958c6ba4e12ea3d1fbb13026a000
