[INFO] fetching crate darling 0.10.2...
[INFO] documenting darling-0.10.2 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate darling 0.10.2 into /workspace/builds/worker-7/source
[INFO] validating manifest of crates.io crate darling 0.10.2 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 darling 0.10.2
[INFO] finished tweaking crates.io crate darling 0.10.2
[INFO] tweaked toml for crates.io crate darling 0.10.2 written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate crates.io crate darling 0.10.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4c1d88ed0df0d7ca9191550a8df0cd276d86936427dea47b4e5c9fd03bebe23d
[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" "4c1d88ed0df0d7ca9191550a8df0cd276d86936427dea47b4e5c9fd03bebe23d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4c1d88ed0df0d7ca9191550a8df0cd276d86936427dea47b4e5c9fd03bebe23d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4c1d88ed0df0d7ca9191550a8df0cd276d86936427dea47b4e5c9fd03bebe23d", kill_on_drop: false }`
[INFO] [stdout] 4c1d88ed0df0d7ca9191550a8df0cd276d86936427dea47b4e5c9fd03bebe23d
[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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3242ca730617edc0d9d4614b7ea91e5b821e74fcef8ca5f62bd77fcf02c63ada
[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" "3242ca730617edc0d9d4614b7ea91e5b821e74fcef8ca5f62bd77fcf02c63ada", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.0
[INFO] [stderr]    Compiling syn v1.0.1
[INFO] [stderr]     Checking unicode-xid v0.2.0
[INFO] [stderr]    Compiling strsim v0.9.2
[INFO] [stderr]    Compiling ident_case v1.0.0
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]     Checking quote v1.0.0
[INFO] [stderr]     Checking darling_core v0.10.2
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]  Documenting darling v0.10.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `[serde]` cannot be resolved, ignoring it.
[INFO] [stdout]  --> src/lib.rs:6:57
[INFO] [stdout]   |
[INFO] [stdout] 6 | //! Darling takes considerable design inspiration from [`serde`]. A data structure that can be
[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 28.95s
[INFO] running `Command { std: "docker" "inspect" "3242ca730617edc0d9d4614b7ea91e5b821e74fcef8ca5f62bd77fcf02c63ada", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3242ca730617edc0d9d4614b7ea91e5b821e74fcef8ca5f62bd77fcf02c63ada", kill_on_drop: false }`
[INFO] [stdout] 3242ca730617edc0d9d4614b7ea91e5b821e74fcef8ca5f62bd77fcf02c63ada