[INFO] crate async-stdio 0.3.0-alpha.4 is already in cache
[INFO] documenting async-stdio-0.3.0-alpha.4 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate async-stdio 0.3.0-alpha.4 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate async-stdio 0.3.0-alpha.4 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 async-stdio 0.3.0-alpha.4
[INFO] finished tweaking crates.io crate async-stdio 0.3.0-alpha.4
[INFO] tweaked toml for crates.io crate async-stdio 0.3.0-alpha.4 written to /workspace/builds/worker-7/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-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] e9992e465f3557b78fd4d409109f87c8be8bbffdb3f98faf857c2be0b6a71853
[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" "e9992e465f3557b78fd4d409109f87c8be8bbffdb3f98faf857c2be0b6a71853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9992e465f3557b78fd4d409109f87c8be8bbffdb3f98faf857c2be0b6a71853", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9992e465f3557b78fd4d409109f87c8be8bbffdb3f98faf857c2be0b6a71853", kill_on_drop: false }`
[INFO] [stdout] e9992e465f3557b78fd4d409109f87c8be8bbffdb3f98faf857c2be0b6a71853
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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] 1142f780c6f99da8806e7ccc805f29b3d7763cf70b301ee441c4d34afa794155
[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" "1142f780c6f99da8806e7ccc805f29b3d7763cf70b301ee441c4d34afa794155", kill_on_drop: false }`
[INFO] [stderr]     Checking futures-core-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-sink-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-io-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking futures-channel-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-util-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-executor-preview v0.3.0-alpha.19
[INFO] [stderr]     Checking futures-preview v0.3.0-alpha.19
[INFO] [stderr]  Documenting async-stdio v0.3.0-alpha.4 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `[AsyncWrite::close]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:239:10
[INFO] [stdout]     |
[INFO] [stdout] 239 |     /// [AsyncWrite::close] on it which doesn't have an `std` counterpart.
[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 6.35s
[INFO] running `Command { std: "docker" "inspect" "1142f780c6f99da8806e7ccc805f29b3d7763cf70b301ee441c4d34afa794155", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1142f780c6f99da8806e7ccc805f29b3d7763cf70b301ee441c4d34afa794155", kill_on_drop: false }`
[INFO] [stdout] 1142f780c6f99da8806e7ccc805f29b3d7763cf70b301ee441c4d34afa794155