[INFO] fetching crate enum-lexer-macro 0.1.0...
[INFO] documenting enum-lexer-macro-0.1.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate enum-lexer-macro 0.1.0 into /workspace/builds/worker-64/source
[INFO] validating manifest of crates.io crate enum-lexer-macro 0.1.0 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate enum-lexer-macro 0.1.0
[INFO] finished tweaking crates.io crate enum-lexer-macro 0.1.0
[INFO] tweaked toml for crates.io crate enum-lexer-macro 0.1.0 written to /workspace/builds/worker-64/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d9b04677bf2336ecdebd3d0c3dec82df81743f1e4632e3067e7bf4630974e0ec
[INFO] running `Command { std: "docker" "start" "-a" "d9b04677bf2336ecdebd3d0c3dec82df81743f1e4632e3067e7bf4630974e0ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d9b04677bf2336ecdebd3d0c3dec82df81743f1e4632e3067e7bf4630974e0ec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9b04677bf2336ecdebd3d0c3dec82df81743f1e4632e3067e7bf4630974e0ec", kill_on_drop: false }`
[INFO] [stdout] d9b04677bf2336ecdebd3d0c3dec82df81743f1e4632e3067e7bf4630974e0ec
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-64/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7032d50b644a773e5a2d83221dbe6ebb04959aa131d745ff5cd97d670cedc311
[INFO] running `Command { std: "docker" "start" "-a" "7032d50b644a773e5a2d83221dbe6ebb04959aa131d745ff5cd97d670cedc311", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]     Checking regex-syntax v0.6.26
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking quick-error v1.2.3
[INFO] [stderr]     Checking termcolor v1.1.3
[INFO] [stderr]     Checking sorted-vec v0.3.7
[INFO] [stderr]     Checking dot v0.1.4
[INFO] [stderr]     Checking humantime v1.3.0
[INFO] [stderr]     Checking aho-corasick v0.7.18
[INFO] [stderr]     Checking quote v1.0.18
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.5.6
[INFO] [stderr]     Checking env_logger v0.7.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]     Checking thiserror v1.0.31
[INFO] [stderr]     Checking regex-dfa-gen v0.1.0
[INFO] [stderr]  Documenting enum-lexer-macro v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:3:12
[INFO] [stdout]   |
[INFO] [stdout] 3 | #![feature(proc_macro_quote)]
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `enum-lexer-macro`
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type proc-macro --crate-name enum_lexer_macro src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=26e1338e94da4810 -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-bb324b73724fa6c6.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-5842325de40ecdfb.rmeta --extern regex_dfa_gen=/opt/rustwide/target/debug/deps/libregex_dfa_gen-aa43f9444f6cdc0e.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-cd6d78b0fb46b2c0.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-36c031ae9871e54c.rmeta --extern proc_macro --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "7032d50b644a773e5a2d83221dbe6ebb04959aa131d745ff5cd97d670cedc311", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7032d50b644a773e5a2d83221dbe6ebb04959aa131d745ff5cd97d670cedc311", kill_on_drop: false }`
[INFO] [stdout] 7032d50b644a773e5a2d83221dbe6ebb04959aa131d745ff5cd97d670cedc311