[INFO] fetching crate wraptest 0.2.1...
[INFO] documenting wraptest-0.2.1 against 1.75.0 for beta-1.76-rustdoc-1
[INFO] extracting crate wraptest 0.2.1 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate wraptest 0.2.1 on toolchain 1.75.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate wraptest 0.2.1
[INFO] finished tweaking crates.io crate wraptest 0.2.1
[INFO] tweaked toml for crates.io crate wraptest 0.2.1 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.75.0" "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-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1c2fa8acda6b952e846dddf15b9f07cf18e2efdfd3ca570f4f25282059c49710
[INFO] running `Command { std: "docker" "start" "-a" "1c2fa8acda6b952e846dddf15b9f07cf18e2efdfd3ca570f4f25282059c49710", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1c2fa8acda6b952e846dddf15b9f07cf18e2efdfd3ca570f4f25282059c49710", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1c2fa8acda6b952e846dddf15b9f07cf18e2efdfd3ca570f4f25282059c49710", kill_on_drop: false }`
[INFO] [stdout] 1c2fa8acda6b952e846dddf15b9f07cf18e2efdfd3ca570f4f25282059c49710
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.75.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ce69200c712354f4e27f9b6f939461c8b1f735691149cdc81a15615b6170afa9
[INFO] running `Command { std: "docker" "start" "-a" "ce69200c712354f4e27f9b6f939461c8b1f735691149cdc81a15615b6170afa9", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.76
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling unicode-ident v1.0.12
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]  Documenting wraptest v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0432]: unresolved imports `syn::visit_mut`, `syn::visit_mut`
[INFO] [stdout]    --> src/lib.rs:127:5
[INFO] [stdout]     |
[INFO] [stdout] 127 |     visit_mut::{self, VisitMut},
[INFO] [stdout]     |     ^^^^^^^^^   ^^^^ no `visit_mut` in the root
[INFO] [stdout]     |     |
[INFO] [stdout]     |     could not find `visit_mut` in `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0432`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `wraptest`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.75.0-x86_64-unknown-linux-gnu/bin/rustdoc --edition=2018 --crate-type proc-macro --crate-name wraptest src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=8780ae7f6286eb90 -L dependency=/opt/rustwide/target/debug/deps --extern proc_macro_error=/opt/rustwide/target/debug/deps/libproc_macro_error-ea9ce2767c071d30.rmeta --extern proc_macro2=/opt/rustwide/target/debug/deps/libproc_macro2-3889f6209a44556f.rmeta --extern quote=/opt/rustwide/target/debug/deps/libquote-b5c91c32bf6deb64.rmeta --extern syn=/opt/rustwide/target/debug/deps/libsyn-82df1375c9560a74.rmeta --extern proc_macro --cap-lints=warn --crate-version 0.2.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "ce69200c712354f4e27f9b6f939461c8b1f735691149cdc81a15615b6170afa9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce69200c712354f4e27f9b6f939461c8b1f735691149cdc81a15615b6170afa9", kill_on_drop: false }`
[INFO] [stdout] ce69200c712354f4e27f9b6f939461c8b1f735691149cdc81a15615b6170afa9
