[INFO] fetching crate msiz_rustc-ap-rustc_macros 3.0.0...
[INFO] documenting msiz_rustc-ap-rustc_macros-3.0.0 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate msiz_rustc-ap-rustc_macros 3.0.0 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate msiz_rustc-ap-rustc_macros 3.0.0 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 msiz_rustc-ap-rustc_macros 3.0.0
[INFO] finished tweaking crates.io crate msiz_rustc-ap-rustc_macros 3.0.0
[INFO] tweaked toml for crates.io crate msiz_rustc-ap-rustc_macros 3.0.0 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __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] 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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b17297919a389ecd22a6fb6ad15b0cfda029ccf2fa982be54b95066bc5d52564
[INFO] running `Command { std: "docker" "start" "-a" "b17297919a389ecd22a6fb6ad15b0cfda029ccf2fa982be54b95066bc5d52564", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b17297919a389ecd22a6fb6ad15b0cfda029ccf2fa982be54b95066bc5d52564", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b17297919a389ecd22a6fb6ad15b0cfda029ccf2fa982be54b95066bc5d52564", kill_on_drop: false }`
[INFO] [stdout] b17297919a389ecd22a6fb6ad15b0cfda029ccf2fa982be54b95066bc5d52564
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/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] 5bf0a01770b2e62bbb58dbff12a31d12b00aa6b539106401e3afd036bce0fa38
[INFO] running `Command { std: "docker" "start" "-a" "5bf0a01770b2e62bbb58dbff12a31d12b00aa6b539106401e3afd036bce0fa38", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]     Checking proc-macro2 v0.4.30
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking quote v0.6.13
[INFO] [stderr]     Checking synstructure v0.10.2
[INFO] [stderr]  Documenting msiz_rustc-ap-rustc_macros v3.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(proc_macro_hygiene)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `msiz_rustc-ap-rustc_macros`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type proc-macro --crate-name msiz_rustc_ap_rustc_macros src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a939a868ba5d71fe -L dependency=/opt/rustwide/target/debug/deps --extern itertools=/opt/rustwide/target/debug/deps/libitertools-24766f31da8f3aa7.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-d52c00771e85a30b.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-1aae7ef5c2bf0fa9.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-71e90fc7dad228a7.rmeta --extern synstructure=/opt/rustwide/target/debug/deps/libsynstructure-91fef9b10e4520ce.rmeta --extern proc_macro --cap-lints=warn --crate-version 3.0.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "5bf0a01770b2e62bbb58dbff12a31d12b00aa6b539106401e3afd036bce0fa38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5bf0a01770b2e62bbb58dbff12a31d12b00aa6b539106401e3afd036bce0fa38", kill_on_drop: false }`
[INFO] [stdout] 5bf0a01770b2e62bbb58dbff12a31d12b00aa6b539106401e3afd036bce0fa38
