[INFO] crate uavcan 0.1.0-preview0 is already in cache
[INFO] documenting uavcan-0.1.0-preview0 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate uavcan 0.1.0-preview0 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate uavcan 0.1.0-preview0 on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate uavcan 0.1.0-preview0
[INFO] finished tweaking crates.io crate uavcan 0.1.0-preview0
[INFO] tweaked toml for crates.io crate uavcan 0.1.0-preview0 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 69b917b77db7d283a92a10989b0c8bdfad6e50a7c0eb55cbfa7fd67c7f905539
[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" "69b917b77db7d283a92a10989b0c8bdfad6e50a7c0eb55cbfa7fd67c7f905539", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "69b917b77db7d283a92a10989b0c8bdfad6e50a7c0eb55cbfa7fd67c7f905539", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "69b917b77db7d283a92a10989b0c8bdfad6e50a7c0eb55cbfa7fd67c7f905539", kill_on_drop: false }`
[INFO] [stdout] 69b917b77db7d283a92a10989b0c8bdfad6e50a7c0eb55cbfa7fd67c7f905539
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52afdd257f972ae469104c3db26fc082cad910896e197495ab621d731c871d53
[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" "52afdd257f972ae469104c3db26fc082cad910896e197495ab621d731c871d53", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling unicode-xid v0.0.4
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling quote v0.3.15
[INFO] [stderr]     Checking ux v0.0.1
[INFO] [stderr]     Checking bit_field v0.8.0
[INFO] [stderr]     Checking embedded_types v0.3.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling synom v0.11.3
[INFO] [stderr]    Compiling syn v0.11.11
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling uavcan-derive v0.1.0-preview0
[INFO] [stderr]  Documenting uavcan v0.1.0-preview0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `[u]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/serializer.rs:142:40
[INFO] [stdout]     |
[INFO] [stdout] 142 |     /// serialize(&self, buffer: &mut [u]) -> usize
[INFO] [stdout]     |                                        ^ cannot be resolved, ignoring
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(intra_doc_link_resolution_failure)]` on by default
[INFO] [stdout]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 34.33s
[INFO] running `Command { std: "docker" "inspect" "52afdd257f972ae469104c3db26fc082cad910896e197495ab621d731c871d53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52afdd257f972ae469104c3db26fc082cad910896e197495ab621d731c871d53", kill_on_drop: false }`
[INFO] [stdout] 52afdd257f972ae469104c3db26fc082cad910896e197495ab621d731c871d53