[INFO] crate nix 0.17.0 is already in cache
[INFO] documenting nix-0.17.0 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate nix 0.17.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate nix 0.17.0 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 nix 0.17.0
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate nix 0.17.0
[INFO] tweaked toml for crates.io crate nix 0.17.0 written to /workspace/builds/worker-8/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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 0f95072a2c086b45d98dd5569ca8cc991502dd4dda394c9d71df0ff573c14e42
[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" "0f95072a2c086b45d98dd5569ca8cc991502dd4dda394c9d71df0ff573c14e42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0f95072a2c086b45d98dd5569ca8cc991502dd4dda394c9d71df0ff573c14e42", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0f95072a2c086b45d98dd5569ca8cc991502dd4dda394c9d71df0ff573c14e42", kill_on_drop: false }`
[INFO] [stdout] 0f95072a2c086b45d98dd5569ca8cc991502dd4dda394c9d71df0ff573c14e42
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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] 232a0e55e4b4f17f6a60798668d2f3d615f9dcc7c0338a4eeab4f6822012195a
[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" "232a0e55e4b4f17f6a60798668d2f3d615f9dcc7c0338a4eeab4f6822012195a", kill_on_drop: false }`
[INFO] [stderr]    Compiling nix v0.17.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]  Documenting nix v0.17.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `[#enum.ControlMessage.html#variant.ScmRights]` has an issue with the link anchor.
[INFO] [stdout]    --> src/sys/socket/mod.rs:366:39
[INFO] [stdout]     |
[INFO] [stdout] 366 |     /// [`ControlMessage::ScmRights`][#enum.ControlMessage.html#variant.ScmRights]
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ only one `#` is allowed in a link
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(intra_doc_link_resolution_failure)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[#enum.ControlMessage.html#variant.ScmRights]` has an issue with the link anchor.
[INFO] [stdout]    --> src/sys/socket/mod.rs:366:39
[INFO] [stdout]     |
[INFO] [stdout] 366 |     /// [`ControlMessage::ScmRights`][#enum.ControlMessage.html#variant.ScmRights]
[INFO] [stdout]     |                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ only one `#` is allowed in a link
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[#enum.ControlMessage.html#variant.ScmCredentials]` has an issue with the link anchor.
[INFO] [stdout]    --> src/sys/socket/mod.rs:369:44
[INFO] [stdout]     |
[INFO] [stdout] 369 |     /// [`ControlMessage::ScmCredentials`][#enum.ControlMessage.html#variant.ScmCredentials]
[INFO] [stdout]     |                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ only one `#` is allowed in a link
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.29s
[INFO] running `Command { std: "docker" "inspect" "232a0e55e4b4f17f6a60798668d2f3d615f9dcc7c0338a4eeab4f6822012195a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "232a0e55e4b4f17f6a60798668d2f3d615f9dcc7c0338a4eeab4f6822012195a", kill_on_drop: false }`
[INFO] [stdout] 232a0e55e4b4f17f6a60798668d2f3d615f9dcc7c0338a4eeab4f6822012195a