[INFO] fetching crate buffering_nocopy_macro 0.2.2...
[INFO] documenting buffering_nocopy_macro-0.2.2 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate buffering_nocopy_macro 0.2.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate buffering_nocopy_macro 0.2.2 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 buffering_nocopy_macro 0.2.2
[INFO] finished tweaking crates.io crate buffering_nocopy_macro 0.2.2
[INFO] tweaked toml for crates.io crate buffering_nocopy_macro 0.2.2 written to /workspace/builds/worker-0/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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] c4fc798bca29c889e768b89d78c03f0d774ae9e7a6a0253c8702cbb19dc76a69
[INFO] running `Command { std: "docker" "start" "-a" "c4fc798bca29c889e768b89d78c03f0d774ae9e7a6a0253c8702cbb19dc76a69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4fc798bca29c889e768b89d78c03f0d774ae9e7a6a0253c8702cbb19dc76a69", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4fc798bca29c889e768b89d78c03f0d774ae9e7a6a0253c8702cbb19dc76a69", kill_on_drop: false }`
[INFO] [stdout] c4fc798bca29c889e768b89d78c03f0d774ae9e7a6a0253c8702cbb19dc76a69
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a2e45e21700f35a38e0f96054cb9ffe2da66d5f3723c5d46c900507f5e6adfb2
[INFO] running `Command { std: "docker" "start" "-a" "a2e45e21700f35a38e0f96054cb9ffe2da66d5f3723c5d46c900507f5e6adfb2", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]     Checking proc-macro2 v1.0.39
[INFO] [stderr]     Checking quote v1.0.18
[INFO] [stderr]  Documenting buffering_nocopy_macro v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `syn::export`
[INFO] [stdout]   --> src/lib.rs:36:5
[INFO] [stdout]    |
[INFO] [stdout] 36 |     export::Span, Attribute, DeriveInput, Field, Ident, Lit, Meta, MetaList, MetaNameValue,
[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 `buffering_nocopy_macro`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type proc-macro --crate-name buffering_nocopy_macro src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=77ee2bdbe4bf35d0 -L dependency=/opt/rustwide/target/debug/deps --extern quote=/opt/rustwide/target/debug/deps/libquote-3dd15ba3b73b2472.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-a98ed1d12c69cb34.rmeta --extern proc_macro --cap-lints=warn --crate-version 0.2.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "a2e45e21700f35a38e0f96054cb9ffe2da66d5f3723c5d46c900507f5e6adfb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a2e45e21700f35a38e0f96054cb9ffe2da66d5f3723c5d46c900507f5e6adfb2", kill_on_drop: false }`
[INFO] [stdout] a2e45e21700f35a38e0f96054cb9ffe2da66d5f3723c5d46c900507f5e6adfb2