[INFO] fetching crate syn 1.0.92...
[INFO] documenting syn-1.0.92 against master#e1df625306f4136949e02612406f0c60df6008f3 for pr-96676
[INFO] extracting crate syn 1.0.92 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate syn 1.0.92 on toolchain e1df625306f4136949e02612406f0c60df6008f3
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1df625306f4136949e02612406f0c60df6008f3" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate syn 1.0.92
[INFO] finished tweaking crates.io crate syn 1.0.92
[INFO] tweaked toml for crates.io crate syn 1.0.92 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1df625306f4136949e02612406f0c60df6008f3" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e1df625306f4136949e02612406f0c60df6008f3" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded automod v1.0.3
[INFO] [stderr]   Downloaded syn-test-suite v0.0.0+test
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+e1df625306f4136949e02612406f0c60df6008f3" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77e2d883b3b6a6b6a4dcc2ba9bd4108dcac06732e737e8dcb6311e223901b3b7
[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" "77e2d883b3b6a6b6a4dcc2ba9bd4108dcac06732e737e8dcb6311e223901b3b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77e2d883b3b6a6b6a4dcc2ba9bd4108dcac06732e737e8dcb6311e223901b3b7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77e2d883b3b6a6b6a4dcc2ba9bd4108dcac06732e737e8dcb6311e223901b3b7", kill_on_drop: false }`
[INFO] [stdout] 77e2d883b3b6a6b6a4dcc2ba9bd4108dcac06732e737e8dcb6311e223901b3b7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=forbid" "-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" "+e1df625306f4136949e02612406f0c60df6008f3" "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] e2e7f5fceb59403a6b4963987109657e5ffc3695dff734fb824b325ead936934
[INFO] running `Command { std: "docker" "start" "-a" "e2e7f5fceb59403a6b4963987109657e5ffc3695dff734fb824b325ead936934", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]     Checking unicode-xid v0.2.3
[INFO] [stderr]    Compiling syn v1.0.92 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking quote v1.0.18
[INFO] [stderr]  Documenting syn v1.0.92 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `File`
[INFO] [stdout]   --> src/lib.rs:42:20
[INFO] [stdout]    |
[INFO] [stdout] 42 | //! [`syn::File`]: File
[INFO] [stdout]    |                    ^^^^ no item named `File` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(rustdoc::broken_intra_doc_links)]` on by default
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `Item`
[INFO] [stdout]   --> src/lib.rs:43:20
[INFO] [stdout]    |
[INFO] [stdout] 43 | //! [`syn::Item`]: Item
[INFO] [stdout]    |                    ^^^^ no item named `Item` in scope
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `crate::ItemStatic`
[INFO] [stdout]   --> src/token.rs:13:21
[INFO] [stdout]    |
[INFO] [stdout] 13 | //! [`ItemStatic`]: crate::ItemStatic
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^ no item named `ItemStatic` in module `syn`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `Block::parse_within`
[INFO] [stdout]   --> src/parse_quote.rs:61:20
[INFO] [stdout]    |
[INFO] [stdout] 61 | /// [`Vec<Stmt>`]: Block::parse_within
[INFO] [stdout]    |                    ^^^^^^^^^^^^^^^^^^^ no item named `Block` in scope
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.27s
[INFO] running `Command { std: "docker" "inspect" "e2e7f5fceb59403a6b4963987109657e5ffc3695dff734fb824b325ead936934", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e2e7f5fceb59403a6b4963987109657e5ffc3695dff734fb824b325ead936934", kill_on_drop: false }`
[INFO] [stdout] e2e7f5fceb59403a6b4963987109657e5ffc3695dff734fb824b325ead936934
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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=forbid" "-e" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=1" "-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" "+e1df625306f4136949e02612406f0c60df6008f3" "rustdoc" "--lib" "-Zrustdoc-map" "--all-features" "--frozen" "--message-format=json" "--" "--cfg" "doc_cfg" "-Z" "unstable-options" "--document-private-items", 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] b0e484af4dbf9e27f3f74ac2150d6904b4c1160a1db1f7ea51a6c8f2c27a2de6
[INFO] running `Command { std: "docker" "start" "-a" "b0e484af4dbf9e27f3f74ac2150d6904b4c1160a1db1f7ea51a6c8f2c27a2de6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]     Checking unicode-xid v0.2.3
[INFO] [stderr]    Compiling syn v1.0.92 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking quote v1.0.18
[INFO] [stderr]  Documenting syn v1.0.92 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.99s
[INFO] running `Command { std: "docker" "inspect" "b0e484af4dbf9e27f3f74ac2150d6904b4c1160a1db1f7ea51a6c8f2c27a2de6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0e484af4dbf9e27f3f74ac2150d6904b4c1160a1db1f7ea51a6c8f2c27a2de6", kill_on_drop: false }`
[INFO] [stdout] b0e484af4dbf9e27f3f74ac2150d6904b4c1160a1db1f7ea51a6c8f2c27a2de6