[INFO] fetching crate futures-util 0.3.5...
[INFO] documenting futures-util-0.3.5 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate futures-util 0.3.5 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate futures-util 0.3.5 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 futures-util 0.3.5
[INFO] finished tweaking crates.io crate futures-util 0.3.5
[INFO] tweaked toml for crates.io crate futures-util 0.3.5 written to /workspace/builds/worker-3/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-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] 904f5be9c719dfa4be5ec4f102fa9291f5c47556e096608659b536915f59b6a6
[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" "904f5be9c719dfa4be5ec4f102fa9291f5c47556e096608659b536915f59b6a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "904f5be9c719dfa4be5ec4f102fa9291f5c47556e096608659b536915f59b6a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "904f5be9c719dfa4be5ec4f102fa9291f5c47556e096608659b536915f59b6a6", kill_on_drop: false }`
[INFO] [stdout] 904f5be9c719dfa4be5ec4f102fa9291f5c47556e096608659b536915f59b6a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 21d9b6a6f46a09e0686efac447dc58c7d853384f0325747370f1f54fa25b7aec
[INFO] running `Command { std: "docker" "start" "-a" "21d9b6a6f46a09e0686efac447dc58c7d853384f0325747370f1f54fa25b7aec", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.18
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.33
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]     Checking once_cell v1.4.0
[INFO] [stderr]    Compiling proc-macro-hack v0.5.16
[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking futures-task v0.3.5
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]     Checking pin-project v0.4.22
[INFO] [stderr]  Documenting futures-util v0.3.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `[TryFutureExt::try_flatten_err]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:286:9
[INFO] [stdout]     |
[INFO] [stdout] 286 |         #[pin_project::pin_project]
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(intra_doc_link_resolution_failure)]` on by default
[INFO] [stdout]     = note: the link appears in this line:
[INFO] [stdout]             
[INFO] [stdout]             Future for the [`try_flatten_err`](TryFutureExt::try_flatten_err) method.
[INFO] [stdout]                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[SpawnExt::spawn_with_handle]` cannot be resolved, ignoring it.
[INFO] [stdout]   --> src/task/spawn.rs:27:43
[INFO] [stdout]    |
[INFO] [stdout] 27 |     /// You can use [`spawn_with_handle`](SpawnExt::spawn_with_handle) if
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[SpawnExt::spawn_with_handle]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/task/spawn.rs:102:43
[INFO] [stdout]     |
[INFO] [stdout] 102 |     /// You can use [`spawn_with_handle`](SpawnExt::spawn_with_handle) if
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]     |
[INFO] [stdout]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.14s
[INFO] running `Command { std: "docker" "inspect" "21d9b6a6f46a09e0686efac447dc58c7d853384f0325747370f1f54fa25b7aec", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21d9b6a6f46a09e0686efac447dc58c7d853384f0325747370f1f54fa25b7aec", kill_on_drop: false }`
[INFO] [stdout] 21d9b6a6f46a09e0686efac447dc58c7d853384f0325747370f1f54fa25b7aec