[INFO] fetching crate bian-proc 0.2.0...
[INFO] documenting bian-proc-0.2.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate bian-proc 0.2.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate bian-proc 0.2.0 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 bian-proc 0.2.0
[INFO] finished tweaking crates.io crate bian-proc 0.2.0
[INFO] tweaked toml for crates.io crate bian-proc 0.2.0 written to /workspace/builds/worker-4/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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] f840d5d080c475ebfbcc06e65823b65d51793d79c9d713094d00fb6b56cc90b2
[INFO] running `Command { std: "docker" "start" "-a" "f840d5d080c475ebfbcc06e65823b65d51793d79c9d713094d00fb6b56cc90b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f840d5d080c475ebfbcc06e65823b65d51793d79c9d713094d00fb6b56cc90b2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f840d5d080c475ebfbcc06e65823b65d51793d79c9d713094d00fb6b56cc90b2", kill_on_drop: false }`
[INFO] [stdout] f840d5d080c475ebfbcc06e65823b65d51793d79c9d713094d00fb6b56cc90b2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ce662f294a18567ce6e61f3795aceeffb2d4fec4e96f41dcf9adab6abbe84713
[INFO] running `Command { std: "docker" "start" "-a" "ce662f294a18567ce6e61f3795aceeffb2d4fec4e96f41dcf9adab6abbe84713", 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 bian-proc v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved imports `syn::FnArg`, `syn::Pat`
[INFO] [stdout]  --> src/lib.rs:3:30
[INFO] [stdout]   |
[INFO] [stdout] 3 | use syn::{parse_macro_input, FnArg, Pat};
[INFO] [stdout]   |                              ^^^^^  ^^^
[INFO] [stdout]   |                              |      |
[INFO] [stdout]   |                              |      no `Pat` in the root
[INFO] [stdout]   |                              |      help: a similar name exists in the module: `Path`
[INFO] [stdout]   |                              no `FnArg` in the root
[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 E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `bian-proc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type proc-macro --crate-name bian_proc src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=34abd9aec148fb7a -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-c1d3bfa6658bd3cb.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-5e860005d80c271d.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-dc001e36810ebbc6.rmeta --extern proc_macro --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ce662f294a18567ce6e61f3795aceeffb2d4fec4e96f41dcf9adab6abbe84713", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce662f294a18567ce6e61f3795aceeffb2d4fec4e96f41dcf9adab6abbe84713", kill_on_drop: false }`
[INFO] [stdout] ce662f294a18567ce6e61f3795aceeffb2d4fec4e96f41dcf9adab6abbe84713