[INFO] fetching crate futures-util 0.3.6...
[INFO] documenting futures-util-0.3.6 against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] extracting crate futures-util 0.3.6 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate futures-util 0.3.6 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate futures-util 0.3.6
[INFO] finished tweaking crates.io crate futures-util 0.3.6
[INFO] tweaked toml for crates.io crate futures-util 0.3.6 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "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-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ce240c88514e271c1aadca4c853c89043e2e70486641fcd7e5f87034e04de7b5
[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" "ce240c88514e271c1aadca4c853c89043e2e70486641fcd7e5f87034e04de7b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ce240c88514e271c1aadca4c853c89043e2e70486641fcd7e5f87034e04de7b5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ce240c88514e271c1aadca4c853c89043e2e70486641fcd7e5f87034e04de7b5", kill_on_drop: false }`
[INFO] [stdout] ce240c88514e271c1aadca4c853c89043e2e70486641fcd7e5f87034e04de7b5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eb81eed840de1d1b9e0afd949e05d53638c3765eb4ce37addac514511fce9cea
[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" "eb81eed840de1d1b9e0afd949e05d53638c3765eb4ce37addac514511fce9cea", kill_on_drop: false }`
[INFO] [stderr]    Compiling futures-macro v0.3.6
[INFO] [stderr]  Documenting futures-util v0.3.6 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unresolved link to `TryFutureExt::try_flatten_err`
[INFO] [stdout]    --> src/lib.rs:292:11
[INFO] [stdout]     |
[INFO] [stdout] 292 |           $(#[$attr])*
[INFO] [stdout]     |             ^^^^^^^^
[INFO] [stdout]     | 
[INFO] [stdout]    ::: src/future/try_future/mod.rs:37:1
[INFO] [stdout]     |
[INFO] [stdout] 37  | / delegate_all!(
[INFO] [stdout] 38  | |     /// Future for the [`try_flatten_err`](TryFutureExt::try_flatten_err) method.
[INFO] [stdout] 39  | |     TryFlattenErr<Fut1, Fut2>(
[INFO] [stdout] 40  | |         try_flatten_err::TryFlattenErr<Fut1, Fut2>
[INFO] [stdout] 41  | |     ): Debug + Future + FusedFuture + New[|x: Fut1| try_flatten_err::TryFlattenErr::new(x)]
[INFO] [stdout] 42  | | );
[INFO] [stdout]     | |__- in this macro invocation
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(broken_intra_doc_links)]` 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]     = note: the trait `TryFutureExt` has no associated item named `try_flatten_err`
[INFO] [stdout]     = note: this warning originates in a macro (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `SpawnExt::spawn_with_handle`
[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]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `SpawnExt` has no associated item named `spawn_with_handle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unresolved link to `SpawnExt::spawn_with_handle`
[INFO] [stdout]    --> src/task/spawn.rs:104:43
[INFO] [stdout]     |
[INFO] [stdout] 104 |     /// You can use [`spawn_with_handle`](SpawnExt::spawn_with_handle) if
[INFO] [stdout]     |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^ the trait `SpawnExt` has no associated item named `spawn_with_handle`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.57s
[INFO] running `Command { std: "docker" "inspect" "eb81eed840de1d1b9e0afd949e05d53638c3765eb4ce37addac514511fce9cea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb81eed840de1d1b9e0afd949e05d53638c3765eb4ce37addac514511fce9cea", kill_on_drop: false }`
[INFO] [stdout] eb81eed840de1d1b9e0afd949e05d53638c3765eb4ce37addac514511fce9cea
