[INFO] fetching crate bincode-grpc-macro 0.7.2...
[INFO] documenting bincode-grpc-macro-0.7.2 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate bincode-grpc-macro 0.7.2 into /workspace/builds/worker-37/source
[INFO] validating manifest of crates.io crate bincode-grpc-macro 0.7.2 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 bincode-grpc-macro 0.7.2
[INFO] finished tweaking crates.io crate bincode-grpc-macro 0.7.2
[INFO] tweaked toml for crates.io crate bincode-grpc-macro 0.7.2 written to /workspace/builds/worker-37/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] 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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] aa4afad2b559ab0841fab86a6768a1f9eb4820bfb46906cb903aca27f688e11c
[INFO] running `Command { std: "docker" "start" "-a" "aa4afad2b559ab0841fab86a6768a1f9eb4820bfb46906cb903aca27f688e11c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "aa4afad2b559ab0841fab86a6768a1f9eb4820bfb46906cb903aca27f688e11c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa4afad2b559ab0841fab86a6768a1f9eb4820bfb46906cb903aca27f688e11c", kill_on_drop: false }`
[INFO] [stdout] aa4afad2b559ab0841fab86a6768a1f9eb4820bfb46906cb903aca27f688e11c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-37/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] f99ef5d3e121e005a7caade816f5b5f10b6f2e703a16747641c60d059793f4b7
[INFO] running `Command { std: "docker" "start" "-a" "f99ef5d3e121e005a7caade816f5b5f10b6f2e703a16747641c60d059793f4b7", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]     Checking unicode-segmentation v1.9.0
[INFO] [stderr]     Checking heck v0.3.3
[INFO] [stderr]     Checking quote v1.0.18
[INFO] [stderr]     Checking toml v0.5.9
[INFO] [stderr]     Checking proc-macro-crate v0.1.5
[INFO] [stderr]  Documenting bincode-grpc-macro v0.7.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `syn::export`
[INFO] [stdout]  --> src/lib.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | use syn::export::TokenStream2;
[INFO] [stdout]   |          ^^^^^^ could not find `export` in `syn`
[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 `bincode-grpc-macro`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type proc-macro --crate-name bincode_grpc_macro src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=64105800c8f7a663 -L dependency=/opt/rustwide/target/debug/deps --extern heck=/opt/rustwide/target/debug/deps/libheck-0d9e993a31b4b522.rmeta --extern proc_macro_crate=/opt/rustwide/target/debug/deps/libproc_macro_crate-0cd06941b9cd4017.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-3dd15ba3b73b2472.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-98fd4ea0a9364f0b.rmeta --extern proc_macro --cap-lints=warn --crate-version 0.7.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "f99ef5d3e121e005a7caade816f5b5f10b6f2e703a16747641c60d059793f4b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f99ef5d3e121e005a7caade816f5b5f10b6f2e703a16747641c60d059793f4b7", kill_on_drop: false }`
[INFO] [stdout] f99ef5d3e121e005a7caade816f5b5f10b6f2e703a16747641c60d059793f4b7