[INFO] fetching crate serde_single_or_vec 1.0.1...
[INFO] documenting serde_single_or_vec-1.0.1 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate serde_single_or_vec 1.0.1 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate serde_single_or_vec 1.0.1 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 serde_single_or_vec 1.0.1
[INFO] finished tweaking crates.io crate serde_single_or_vec 1.0.1
[INFO] tweaked toml for crates.io crate serde_single_or_vec 1.0.1 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] 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] d503deee8ea1638aa65400020a9d1d244ae7b312121d8fe99f9011f79d7f901b
[INFO] running `Command { std: "docker" "start" "-a" "d503deee8ea1638aa65400020a9d1d244ae7b312121d8fe99f9011f79d7f901b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d503deee8ea1638aa65400020a9d1d244ae7b312121d8fe99f9011f79d7f901b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d503deee8ea1638aa65400020a9d1d244ae7b312121d8fe99f9011f79d7f901b", kill_on_drop: false }`
[INFO] [stdout] d503deee8ea1638aa65400020a9d1d244ae7b312121d8fe99f9011f79d7f901b
[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] 5452c58e3defc7fc17afb0566c8904f988281be2d7f84f167250565b5b828370
[INFO] running `Command { std: "docker" "start" "-a" "5452c58e3defc7fc17afb0566c8904f988281be2d7f84f167250565b5b828370", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling serde v1.0.195
[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 serde_single_or_vec v1.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unknown lint: `rustdoc::missing_doc_code_examples`
[INFO] [stdout]    --> src/lib.rs:128:1
[INFO] [stdout]     |
[INFO] [stdout] 128 | / #![warn(
[INFO] [stdout] 129 | |     absolute_paths_not_starting_with_crate,
[INFO] [stdout] 130 | |     anonymous_parameters,
[INFO] [stdout] 131 | |     box_pointers,
[INFO] [stdout] ...   |
[INFO] [stdout] 160 | |     variant_size_differences
[INFO] [stdout] 161 | | )]
[INFO] [stdout]     | |__^
[INFO] [stdout]     |
[INFO] [stdout]     = note: the `rustdoc::missing_doc_code_examples` lint is unstable
[INFO] [stdout]     = note: see issue #101730 <https://github.com/rust-lang/rust/issues/101730> for more information
[INFO] [stdout]     = note: `#[warn(unknown_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0433]: failed to resolve: could not find `private` in `serde`
[INFO] [stdout]    --> src/lib.rs:183:5
[INFO] [stdout]     |
[INFO] [stdout] 183 |     private::de::{Content, ContentRefDeserializer},
[INFO] [stdout]     |     ^^^^^^^ could not find `private` in `serde`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `missing_crate_level_docs` has been renamed to `rustdoc::missing_crate_level_docs`
[INFO] [stdout]    --> src/lib.rs:141:5
[INFO] [stdout]     |
[INFO] [stdout] 141 |     missing_crate_level_docs,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `rustdoc::missing_crate_level_docs`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(renamed_and_removed_lints)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `missing_doc_code_examples` has been renamed to `rustdoc::missing_doc_code_examples`
[INFO] [stdout]    --> src/lib.rs:144:5
[INFO] [stdout]     |
[INFO] [stdout] 144 |     missing_doc_code_examples,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `rustdoc::missing_doc_code_examples`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `private_doc_tests` has been renamed to `rustdoc::private_doc_tests`
[INFO] [stdout]    --> src/lib.rs:146:5
[INFO] [stdout]     |
[INFO] [stdout] 146 |     private_doc_tests,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^ help: use the new name: `rustdoc::private_doc_tests`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: lint `unaligned_references` has been removed: converted into hard error, see issue #82523 <https://github.com/rust-lang/rust/issues/82523> for more information
[INFO] [stdout]    --> src/lib.rs:150:5
[INFO] [stdout]     |
[INFO] [stdout] 150 |     unaligned_references,
[INFO] [stdout]     |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0433`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `serde_single_or_vec`
[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 serde_single_or_vec src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="std"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=ef170cb6914f4029 -L dependency=/opt/rustwide/target/debug/deps --extern serde=/opt/rustwide/target/debug/deps/libserde-4d407a2ca149febc.rmeta --cap-lints=warn --crate-version 1.0.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "5452c58e3defc7fc17afb0566c8904f988281be2d7f84f167250565b5b828370", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5452c58e3defc7fc17afb0566c8904f988281be2d7f84f167250565b5b828370", kill_on_drop: false }`
[INFO] [stdout] 5452c58e3defc7fc17afb0566c8904f988281be2d7f84f167250565b5b828370
