[INFO] fetching crate static-reflect 0.2.0-alpha.6...
[INFO] documenting static-reflect-0.2.0-alpha.6 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate static-reflect 0.2.0-alpha.6 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate static-reflect 0.2.0-alpha.6 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 static-reflect 0.2.0-alpha.6
[INFO] finished tweaking crates.io crate static-reflect 0.2.0-alpha.6
[INFO] tweaked toml for crates.io crate static-reflect 0.2.0-alpha.6 written to /workspace/builds/worker-4-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]  Downloading crates ...
[INFO] [stderr]   Downloaded proc-macro-kwargs-derive v0.1.5
[INFO] [stderr]   Downloaded proc-macro-kwargs v0.1.5
[INFO] [stderr]   Downloaded zerogc v0.2.0-alpha.7
[INFO] [stderr]   Downloaded zerogc-derive v0.2.0-alpha.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 4cf0330745393eebca4273f8a398cb0754b5d9c41fe54132a97a8efe72d8ce0f
[INFO] running `Command { std: "docker" "start" "-a" "4cf0330745393eebca4273f8a398cb0754b5d9c41fe54132a97a8efe72d8ce0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4cf0330745393eebca4273f8a398cb0754b5d9c41fe54132a97a8efe72d8ce0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cf0330745393eebca4273f8a398cb0754b5d9c41fe54132a97a8efe72d8ce0f", kill_on_drop: false }`
[INFO] [stdout] 4cf0330745393eebca4273f8a398cb0754b5d9c41fe54132a97a8efe72d8ce0f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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] 5b6f8926f2a50252ba128acea5f19bbab676513ebec84b0a66d482ff9ef91e01
[INFO] running `Command { std: "docker" "start" "-a" "5b6f8926f2a50252ba128acea5f19bbab676513ebec84b0a66d482ff9ef91e01", kill_on_drop: false }`
[INFO] [stderr]  Documenting static-reflect v0.2.0-alpha.6 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | / #![feature(
[INFO] [stdout] 14 | |     const_option, // We use Option::unwrap
[INFO] [stdout] 15 | |     const_fn_fn_ptr_basics, // We use PhantomData<fn() -> T>
[INFO] [stdout] 16 | |     const_fn_trait_bound,
[INFO] [stdout] 17 | |     // Used for field_offset macro
[INFO] [stdout] 18 | |     const_ptr_offset_from,
[INFO] [stdout] 19 | | )]
[INFO] [stdout]    | |__^
[INFO] [stdout]    |
[INFO] [stdout]    = help: the feature `const_fn_trait_bound` has been stable since `1.61.0` and no longer requires an attribute to enable
[INFO] [stdout]    = help: the feature `const_fn_trait_bound` has been stable since `1.61.0` and no longer requires an attribute to enable
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:20:32
[INFO] [stdout]    |
[INFO] [stdout] 20 | #![cfg_attr(feature = "never", feature(never_type))]
[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 `static-reflect`
[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 static_reflect src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="builtins"' --cfg 'feature="default"' --cfg 'feature="never"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=8b56301564dbcc47 -L dependency=/opt/rustwide/target/debug/deps --cap-lints=warn --crate-version 0.2.0-alpha.6` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "5b6f8926f2a50252ba128acea5f19bbab676513ebec84b0a66d482ff9ef91e01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5b6f8926f2a50252ba128acea5f19bbab676513ebec84b0a66d482ff9ef91e01", kill_on_drop: false }`
[INFO] [stdout] 5b6f8926f2a50252ba128acea5f19bbab676513ebec84b0a66d482ff9ef91e01
