[INFO] fetching crate bitfields 0.2.0...
[INFO] documenting bitfields-0.2.0 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate bitfields 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate bitfields 0.2.0 on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate bitfields 0.2.0
[INFO] finished tweaking crates.io crate bitfields 0.2.0
[INFO] tweaked toml for crates.io crate bitfields 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "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-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f39cb256a8e43e07fceb7d87f90f315334cb6a9c34a3652a99c2dff7b56981a6
[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" "f39cb256a8e43e07fceb7d87f90f315334cb6a9c34a3652a99c2dff7b56981a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f39cb256a8e43e07fceb7d87f90f315334cb6a9c34a3652a99c2dff7b56981a6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f39cb256a8e43e07fceb7d87f90f315334cb6a9c34a3652a99c2dff7b56981a6", kill_on_drop: false }`
[INFO] [stdout] f39cb256a8e43e07fceb7d87f90f315334cb6a9c34a3652a99c2dff7b56981a6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "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] 4c01183468afcc53ded7715e54776980fded6da652f7bbf8c0a9c087f92b9685
[INFO] running `Command { std: "docker" "start" "-a" "4c01183468afcc53ded7715e54776980fded6da652f7bbf8c0a9c087f92b9685", kill_on_drop: false }`
[INFO] [stderr]  Documenting bitfields v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/lib.rs:110:9
[INFO] [stdout]     |
[INFO] [stdout] 110 |         ((target >> pos) & 0b1)
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[BitFieldSet]` cannot be resolved, ignoring it.
[INFO] [stdout]   --> src/lib.rs:15:45
[INFO] [stdout]    |
[INFO] [stdout] 15 | /// Helper trait for defining where in the [BitFieldSet] to put data.
[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: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.58s
[INFO] running `Command { std: "docker" "inspect" "4c01183468afcc53ded7715e54776980fded6da652f7bbf8c0a9c087f92b9685", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c01183468afcc53ded7715e54776980fded6da652f7bbf8c0a9c087f92b9685", kill_on_drop: false }`
[INFO] [stdout] 4c01183468afcc53ded7715e54776980fded6da652f7bbf8c0a9c087f92b9685