[INFO] fetching crate synext 0.3.0...
[INFO] documenting synext-0.3.0 against da3f5c31e5535b3dc210067de660a45784ae1e9c for pr-162169
[INFO] extracting crate synext 0.3.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate synext 0.3.0
[INFO] finished tweaking crates.io crate synext 0.3.0
[INFO] tweaked toml for crates.io crate synext 0.3.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate synext 0.3.0 on toolchain da3f5c31e5535b3dc210067de660a45784ae1e9c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+da3f5c31e5535b3dc210067de660a45784ae1e9c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+da3f5c31e5535b3dc210067de660a45784ae1e9c" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 4 packages to highest compatible versions
[INFO] [stderr]       Adding syn v1.0.109 (available: v3.0.5)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+da3f5c31e5535b3dc210067de660a45784ae1e9c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:8683fc1fc2eb5c9ac98e0d076ab094b2ffac7f99da555d2b6a2e27f346de2ec7" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 3490edb8616032e5306930bc2d9577e1fc855be07526bc71942ae614441002fc
[INFO] running `Command { std: "docker" "start" "3490edb8616032e5306930bc2d9577e1fc855be07526bc71942ae614441002fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3490edb8616032e5306930bc2d9577e1fc855be07526bc71942ae614441002fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "3490edb8616032e5306930bc2d9577e1fc855be07526bc71942ae614441002fc" "/opt/rustwide/cargo-home/bin/cargo" "+da3f5c31e5535b3dc210067de660a45784ae1e9c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3490edb8616032e5306930bc2d9577e1fc855be07526bc71942ae614441002fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-w" "/opt/rustwide/workdir" "--user" "0:0" "3490edb8616032e5306930bc2d9577e1fc855be07526bc71942ae614441002fc" "/opt/rustwide/cargo-home/bin/cargo" "+da3f5c31e5535b3dc210067de660a45784ae1e9c" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.107
[INFO] [stderr]    Compiling quote v1.0.47
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]  Documenting synext v0.3.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: markdown element starts on one item and ends on another
[INFO] [stdout]   --> src/syntax/attr/parser.rs:53:1
[INFO] [stdout]    |
[INFO] [stdout] 53 | / pub fn try_extract_attribute_args(attr: &str, args: AttributeArgs) -> Option<String> {
[INFO] [stdout] 54 | |     let mut attrbute = None;
[INFO] [stdout] 55 | |
[INFO] [stdout] 56 | |     for arg in args {
[INFO] [stdout] ...  |
[INFO] [stdout] 69 | |     attrbute
[INFO] [stdout] 70 | | }
[INFO] [stdout]    | |_^
[INFO] [stdout]    |
[INFO] [stdout]    = help: the way this is parsed might change in the future
[INFO] [stdout]    = help: starts near ` @since 0.3.0`
[INFO] [stdout]    = help: ends near ` Try to extract the specified attribute value from an attribute macro.`
[INFO] [stdout]    = note: `#[deny(rustdoc::unportable_markdown)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: markdown element starts on one item and ends on another
[INFO] [stdout]    --> src/syntax/attr/parser.rs:100:1
[INFO] [stdout]     |
[INFO] [stdout] 100 | / pub fn try_extract_attribute_first_args(args: AttributeArgs) -> Option<String> {
[INFO] [stdout] 101 | |     match args.first() {
[INFO] [stdout] 102 | |         Some(NestedMeta::Lit(Lit::Str(v))) => Some(v.value()),
[INFO] [stdout] 103 | |         _ => None,
[INFO] [stdout] 104 | |     }
[INFO] [stdout] 105 | | }
[INFO] [stdout]     | |_^
[INFO] [stdout]     |
[INFO] [stdout]     = help: the way this is parsed might change in the future
[INFO] [stdout]     = help: starts near ` @since 0.3.0`
[INFO] [stdout]     = help: ends near ` Try to extract the first attribute value from an attribute macro.`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `synext`
[INFO] running `Command { std: "docker" "inspect" "3490edb8616032e5306930bc2d9577e1fc855be07526bc71942ae614441002fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3490edb8616032e5306930bc2d9577e1fc855be07526bc71942ae614441002fc", kill_on_drop: false }`
[INFO] [stdout] 3490edb8616032e5306930bc2d9577e1fc855be07526bc71942ae614441002fc
