[INFO] fetching crate glsp-engine 0.2.0...
[INFO] documenting glsp-engine-0.2.0 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate glsp-engine 0.2.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate glsp-engine 0.2.0 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 glsp-engine 0.2.0
[INFO] finished tweaking crates.io crate glsp-engine 0.2.0
[INFO] tweaked toml for crates.io crate glsp-engine 0.2.0 written to /workspace/builds/worker-2-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-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] d69eeb09429f5da94b6b5b4fcc98cc3486176efcc9ad7d325d380143134ff556
[INFO] running `Command { std: "docker" "start" "-a" "d69eeb09429f5da94b6b5b4fcc98cc3486176efcc9ad7d325d380143134ff556", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d69eeb09429f5da94b6b5b4fcc98cc3486176efcc9ad7d325d380143134ff556", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d69eeb09429f5da94b6b5b4fcc98cc3486176efcc9ad7d325d380143134ff556", kill_on_drop: false }`
[INFO] [stdout] d69eeb09429f5da94b6b5b4fcc98cc3486176efcc9ad7d325d380143134ff556
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 05eee020e2e4dd4e74da572f3de6689f0af6aaef5c3d2495c1567ac218d00c62
[INFO] running `Command { std: "docker" "start" "-a" "05eee020e2e4dd4e74da572f3de6689f0af6aaef5c3d2495c1567ac218d00c62", kill_on_drop: false }`
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking smallvec v1.11.2
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]  Documenting glsp-engine v0.2.0 (/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(min_specialization)]
[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(rustc_attrs)]
[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:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #![feature(unboxed_closures)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `rustc_attrs` is internal to the compiler or standard library
[INFO] [stdout]  --> src/lib.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | #![feature(rustc_attrs)]
[INFO] [stdout]   |            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: using it is strongly discouraged
[INFO] [stdout]   = note: `#[warn(internal_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around match arm expression
[INFO] [stdout]     --> src/collections.rs:1847:33
[INFO] [stdout]      |
[INFO] [stdout] 1847 |             StrStorage::Str1(ref vec) => (vec.capacity() + 1),
[INFO] [stdout]      |                                          ^                  ^
[INFO] [stdout]      |
[INFO] [stdout]      = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1847 -             StrStorage::Str1(ref vec) => (vec.capacity() + 1),
[INFO] [stdout] 1847 +             StrStorage::Str1(ref vec) => vec.capacity() + 1,
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0059]: type parameter to bare `std::ops::Fn` trait must be a tuple
[INFO] [stdout]     --> src/wrap.rs:2624:29
[INFO] [stdout]      |
[INFO] [stdout] 2624 | pub trait OutputIntoVal<T>: Fn<T> {
[INFO] [stdout]      |                             ^^^^^ the trait `std::marker::Tuple` is not implemented for `T`
[INFO] [stdout]      |
[INFO] [stdout] note: required by a bound in `std::ops::Fn`
[INFO] [stdout]     --> /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:76:1
[INFO] [stdout] help: consider restricting type parameter `T`
[INFO] [stdout]      |
[INFO] [stdout] 2624 | pub trait OutputIntoVal<T: std::marker::Tuple>: Fn<T> {
[INFO] [stdout]      |                          ++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0059]: type parameter to bare `std::ops::Fn` trait must be a tuple
[INFO] [stdout]     --> src/wrap.rs:2629:5
[INFO] [stdout]      |
[INFO] [stdout] 2629 |     F: Fn<T>,
[INFO] [stdout]      |        ^^^^^ the trait `std::marker::Tuple` is not implemented for `T`
[INFO] [stdout]      |
[INFO] [stdout] note: required by a bound in `std::ops::Fn`
[INFO] [stdout]     --> /rustc/82e1608dfa6e0b5569232559e3d385fea5a93112/library/core/src/ops/function.rs:76:1
[INFO] [stdout] help: consider further restricting type parameter `T`
[INFO] [stdout]      |
[INFO] [stdout] 2630 |     <F as FnOnce<T>>::Output: IntoVal, T: std::marker::Tuple
[INFO] [stdout]      |                                      +++++++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 5 previous errors; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0059, E0554.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0059`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `glsp-engine`
[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 glsp_engine src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=7f75d62b63fcd76d -L dependency=/opt/rustwide/target/debug/deps --extern fnv=/opt/rustwide/target/debug/deps/libfnv-fe654c28f7fcacdc.rmeta --extern owning_ref=/opt/rustwide/target/debug/deps/libowning_ref-5ee6bdadb2bf0df1.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-0c307f2db442a544.rmeta --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "05eee020e2e4dd4e74da572f3de6689f0af6aaef5c3d2495c1567ac218d00c62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "05eee020e2e4dd4e74da572f3de6689f0af6aaef5c3d2495c1567ac218d00c62", kill_on_drop: false }`
[INFO] [stdout] 05eee020e2e4dd4e74da572f3de6689f0af6aaef5c3d2495c1567ac218d00c62
