[INFO] fetching crate next-gen_proc-macro 0.0.10...
[INFO] documenting next-gen_proc-macro-0.0.10 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate next-gen_proc-macro 0.0.10 into /workspace/builds/worker-4-tc1/source
[INFO] validating manifest of crates.io crate next-gen_proc-macro 0.0.10 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate next-gen_proc-macro 0.0.10
[INFO] finished tweaking crates.io crate next-gen_proc-macro 0.0.10
[INFO] tweaked toml for crates.io crate next-gen_proc-macro 0.0.10 written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded fstrings-proc-macro v0.2.3
[INFO] [stderr]   Downloaded fstrings v0.2.3
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c879870d59075a8855eebec6abca073712827b3a66fffbc7e944f5e39d0b6fd
[INFO] running `Command { std: "docker" "start" "-a" "1c879870d59075a8855eebec6abca073712827b3a66fffbc7e944f5e39d0b6fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c879870d59075a8855eebec6abca073712827b3a66fffbc7e944f5e39d0b6fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c879870d59075a8855eebec6abca073712827b3a66fffbc7e944f5e39d0b6fd", kill_on_drop: false }`
[INFO] [stdout] 1c879870d59075a8855eebec6abca073712827b3a66fffbc7e944f5e39d0b6fd
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 974b289e6a6becb8f05f80e64b34822f647e0d9e535fee26e210b6edc1bbada9
[INFO] running `Command { std: "docker" "start" "-a" "974b289e6a6becb8f05f80e64b34822f647e0d9e535fee26e210b6edc1bbada9", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-hack v0.5.20+deprecated
[INFO] [stderr]     Checking unicode-ident v1.0.8
[INFO] [stderr]     Checking proc-macro2 v1.0.56
[INFO] [stderr]     Checking quote v1.0.26
[INFO] [stderr]    Compiling fstrings-proc-macro v0.2.3
[INFO] [stderr]     Checking fstrings v0.2.3
[INFO] [stderr]  Documenting next-gen_proc-macro v0.0.10 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.04s
[INFO] running `Command { std: "docker" "inspect" "974b289e6a6becb8f05f80e64b34822f647e0d9e535fee26e210b6edc1bbada9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "974b289e6a6becb8f05f80e64b34822f647e0d9e535fee26e210b6edc1bbada9", kill_on_drop: false }`
[INFO] [stdout] 974b289e6a6becb8f05f80e64b34822f647e0d9e535fee26e210b6edc1bbada9
[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" "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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "rustdoc" "--lib" "-Zrustdoc-map" "--features" "external_doc" "-Z" "unstable-options" "--config" "build.rustdocflags=[\"-Z\", \"unstable-options\", \"--document-private-items\"]" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 632185fd76b0f28d9538631478de2b8d677c18f473b18b1a918fa1f2db7e8694
[INFO] running `Command { std: "docker" "start" "-a" "632185fd76b0f28d9538631478de2b8d677c18f473b18b1a918fa1f2db7e8694", kill_on_drop: false }`
[INFO] [stderr]  Documenting next-gen_proc-macro v0.0.10 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> mod.rs:2:13
[INFO] [stdout]   |
[INFO] [stdout] 2 |     feature(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 `next-gen_proc-macro`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type proc-macro --crate-name next_gen_proc_macro mod.rs -o /opt/rustwide/target/doc --cfg 'feature="external_doc"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat -C metadata=114249201008929b -L dependency=/opt/rustwide/target/debug/deps --extern fstrings=/opt/rustwide/target/debug/deps/libfstrings-547a2a8b54f85a73.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-25938768891e3290.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-72effca52e7ddeb7.rmeta --extern proc_macro --extern-html-root-url 'fstrings=https://docs.rs/fstrings/0.2.3/' --extern-html-root-url 'quote=https://docs.rs/quote/1.0.26/' --extern-html-root-url 'syn=https://docs.rs/syn/1.0.109/' -Zunstable-options --cap-lints=warn --crate-version 0.0.10` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "632185fd76b0f28d9538631478de2b8d677c18f473b18b1a918fa1f2db7e8694", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "632185fd76b0f28d9538631478de2b8d677c18f473b18b1a918fa1f2db7e8694", kill_on_drop: false }`
[INFO] [stdout] 632185fd76b0f28d9538631478de2b8d677c18f473b18b1a918fa1f2db7e8694
