[INFO] fetching crate wasm-wrapper-gen-build 0.0.3...
[INFO] documenting wasm-wrapper-gen-build-0.0.3 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate wasm-wrapper-gen-build 0.0.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate wasm-wrapper-gen-build 0.0.3 on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wasm-wrapper-gen-build 0.0.3
[INFO] finished tweaking crates.io crate wasm-wrapper-gen-build 0.0.3
[INFO] tweaked toml for crates.io crate wasm-wrapper-gen-build 0.0.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 308c80a8bc2cee67e8faad26211828aa131ddb19f6120af2a31f6ae6a0bd7fef
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "308c80a8bc2cee67e8faad26211828aa131ddb19f6120af2a31f6ae6a0bd7fef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "308c80a8bc2cee67e8faad26211828aa131ddb19f6120af2a31f6ae6a0bd7fef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "308c80a8bc2cee67e8faad26211828aa131ddb19f6120af2a31f6ae6a0bd7fef", kill_on_drop: false }`
[INFO] [stdout] 308c80a8bc2cee67e8faad26211828aa131ddb19f6120af2a31f6ae6a0bd7fef
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a206ce76e92f6f0e4588a823c61ec2e53d8d24ff8fa6ddc9f733673fdfa5f1f6
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "a206ce76e92f6f0e4588a823c61ec2e53d8d24ff8fa6ddc9f733673fdfa5f1f6", kill_on_drop: false }`
[INFO] [stderr]     Checking synom v0.11.3
[INFO] [stderr]     Checking syn v0.11.11
[INFO] [stderr]     Checking wasm-wrapper-gen-shared v0.0.3
[INFO] [stderr]  Documenting wasm-wrapper-gen-build v0.0.3 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved import `syn::visit`
[INFO] [stdout]  --> src/source_searching.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 |     use syn::visit::Visitor;
[INFO] [stdout]   |              ^^^^^ could not find `visit` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `wasm-wrapper-gen-build`.
[INFO] [stdout] error[E0433]: failed to resolve: could not find `visit` in `syn`
[INFO] [stdout]   --> src/source_searching.rs:53:11
[INFO] [stdout]    |
[INFO] [stdout] 53 | impl syn::visit::Visitor for FindMacrosVisitor {
[INFO] [stdout]    |           ^^^^^ could not find `visit` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] Caused by:
[INFO] [stdout] error: aborting due to 3 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name wasm_wrapper_gen_build src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern failure=/opt/rustwide/target/debug/deps/libfailure-3d0ba9b30d5da469.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-ba22b9c26e155c11.rmeta --extern wasm_wrapper_gen_shared=/opt/rustwide/target/debug/deps/libwasm_wrapper_gen_shared-7349a6fee6839869.rmeta --cap-lints=warn --crate-version 0.0.3` (exit code: 1)
[INFO] [stdout] Some errors have detailed explanations: E0432, E0433.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "a206ce76e92f6f0e4588a823c61ec2e53d8d24ff8fa6ddc9f733673fdfa5f1f6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a206ce76e92f6f0e4588a823c61ec2e53d8d24ff8fa6ddc9f733673fdfa5f1f6", kill_on_drop: false }`
[INFO] [stdout] a206ce76e92f6f0e4588a823c61ec2e53d8d24ff8fa6ddc9f733673fdfa5f1f6