[INFO] fetching crate futures-signals-structs-derive 0.2.0...
[INFO] documenting futures-signals-structs-derive-0.2.0 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate futures-signals-structs-derive 0.2.0 into /workspace/builds/worker-74/source
[INFO] validating manifest of crates.io crate futures-signals-structs-derive 0.2.0 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futures-signals-structs-derive 0.2.0
[INFO] finished tweaking crates.io crate futures-signals-structs-derive 0.2.0
[INFO] tweaked toml for crates.io crate futures-signals-structs-derive 0.2.0 written to /workspace/builds/worker-74/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e779926aaec62b4d7215f203d37a5888fa21e2349fa658fafe2237f14cb774a
[INFO] running `Command { std: "docker" "start" "-a" "2e779926aaec62b4d7215f203d37a5888fa21e2349fa658fafe2237f14cb774a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e779926aaec62b4d7215f203d37a5888fa21e2349fa658fafe2237f14cb774a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e779926aaec62b4d7215f203d37a5888fa21e2349fa658fafe2237f14cb774a", kill_on_drop: false }`
[INFO] [stdout] 2e779926aaec62b4d7215f203d37a5888fa21e2349fa658fafe2237f14cb774a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-74/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ee3d3624edc8ac73f9af642efd696ff572cb072b6eec4fa9c69e8cd7f07f168f
[INFO] running `Command { std: "docker" "start" "-a" "ee3d3624edc8ac73f9af642efd696ff572cb072b6eec4fa9c69e8cd7f07f168f", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.74
[INFO] [stderr]     Checking proc-macro2 v1.0.28
[INFO] [stderr]     Checking quote v1.0.9
[INFO] [stderr]  Documenting futures-signals-structs-derive v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `mutable_type`
[INFO] [stdout]    --> src/lib.rs:153:63
[INFO] [stdout]     |
[INFO] [stdout] 153 | /// Structs can depend on other structs when annotated with #[mutable_type]
[INFO] [stdout]     |                                                               ^^^^^^^^^^^^ no item named `mutable_type` 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: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.10s
[INFO] running `Command { std: "docker" "inspect" "ee3d3624edc8ac73f9af642efd696ff572cb072b6eec4fa9c69e8cd7f07f168f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee3d3624edc8ac73f9af642efd696ff572cb072b6eec4fa9c69e8cd7f07f168f", kill_on_drop: false }`
[INFO] [stdout] ee3d3624edc8ac73f9af642efd696ff572cb072b6eec4fa9c69e8cd7f07f168f
