[INFO] fetching crate blanket 0.2.0...
[INFO] documenting blanket-0.2.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate blanket 0.2.0 into /workspace/builds/worker-33/source
[INFO] validating manifest of crates.io crate blanket 0.2.0 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate blanket 0.2.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate blanket 0.2.0
[INFO] tweaked toml for crates.io crate blanket 0.2.0 written to /workspace/builds/worker-33/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 176734e8ce70b3855e1e8434bbafbc46dfc01ec58275418c0aa240cb316512ff
[INFO] running `Command { std: "docker" "start" "-a" "176734e8ce70b3855e1e8434bbafbc46dfc01ec58275418c0aa240cb316512ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "176734e8ce70b3855e1e8434bbafbc46dfc01ec58275418c0aa240cb316512ff", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "176734e8ce70b3855e1e8434bbafbc46dfc01ec58275418c0aa240cb316512ff", kill_on_drop: false }`
[INFO] [stdout] 176734e8ce70b3855e1e8434bbafbc46dfc01ec58275418c0aa240cb316512ff
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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" "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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1978b71cab519a1c3ec1b7386bda93d5d7bddc95b3f91c20a19784821362af84
[INFO] running `Command { std: "docker" "start" "-a" "1978b71cab519a1c3ec1b7386bda93d5d7bddc95b3f91c20a19784821362af84", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]     Checking unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]     Checking quote v1.0.18
[INFO] [stderr]  Documenting blanket v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.43s
[INFO] running `Command { std: "docker" "inspect" "1978b71cab519a1c3ec1b7386bda93d5d7bddc95b3f91c20a19784821362af84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1978b71cab519a1c3ec1b7386bda93d5d7bddc95b3f91c20a19784821362af84", kill_on_drop: false }`
[INFO] [stdout] 1978b71cab519a1c3ec1b7386bda93d5d7bddc95b3f91c20a19784821362af84
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-33/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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--features" "_doc" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 6f5d62a0bd49a9ba98e8bd370d0161ac2fde8add9e739b7b27bd65e1b2b7eab5
[INFO] running `Command { std: "docker" "start" "-a" "6f5d62a0bd49a9ba98e8bd370d0161ac2fde8add9e739b7b27bd65e1b2b7eab5", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]     Checking unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]     Checking quote v1.0.18
[INFO] [stderr]  Documenting blanket v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:1:48
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![cfg_attr(feature = "_doc", feature(doc_cfg, external_doc))]
[INFO] [stdout]   |                                                ^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: use #[doc = include_str!("filename")] instead, which handles macro invocations
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[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 E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `blanket`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type proc-macro --crate-name blanket src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="_doc"' --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat -Z unstable-options --document-private-items -C metadata=4bfe5e6bc3cbedc6 -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-412f8ac4638e7e9b.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-c3252a44ced4e42f.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-e6d86da3c7f9d82e.rmeta --extern proc_macro --extern-html-root-url 'proc_macro2=https://docs.rs/proc-macro2/1.0.39/' --extern-html-root-url 'quote=https://docs.rs/quote/1.0.18/' --extern-html-root-url 'syn=https://docs.rs/syn/1.0.95/' -Zunstable-options --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "6f5d62a0bd49a9ba98e8bd370d0161ac2fde8add9e739b7b27bd65e1b2b7eab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f5d62a0bd49a9ba98e8bd370d0161ac2fde8add9e739b7b27bd65e1b2b7eab5", kill_on_drop: false }`
[INFO] [stdout] 6f5d62a0bd49a9ba98e8bd370d0161ac2fde8add9e739b7b27bd65e1b2b7eab5