[INFO] crate tracing-log 0.1.1 is already in cache
[INFO] documenting tracing-log-0.1.1 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate tracing-log 0.1.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate tracing-log 0.1.1 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 tracing-log 0.1.1
[INFO] finished tweaking crates.io crate tracing-log 0.1.1
[INFO] tweaked toml for crates.io crate tracing-log 0.1.1 written to /workspace/builds/worker-4/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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] a6161ce9279e9dadaac11ea98e8160dd139d4bad0eace5f34de76da6f8745c02
[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" "a6161ce9279e9dadaac11ea98e8160dd139d4bad0eace5f34de76da6f8745c02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a6161ce9279e9dadaac11ea98e8160dd139d4bad0eace5f34de76da6f8745c02", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a6161ce9279e9dadaac11ea98e8160dd139d4bad0eace5f34de76da6f8745c02", kill_on_drop: false }`
[INFO] [stdout] a6161ce9279e9dadaac11ea98e8160dd139d4bad0eace5f34de76da6f8745c02
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] ebc6b5bf6bb0383bc133b9c90ff2f4a7cf19cf396b8894cfee428b42794b11a0
[INFO] running `Command { std: "docker" "start" "-a" "ebc6b5bf6bb0383bc133b9c90ff2f4a7cf19cf396b8894cfee428b42794b11a0", kill_on_drop: false }`
[INFO] [stderr]     Checking tracing-core v0.1.10
[INFO] [stderr]  Documenting tracing-log v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `[flags]` cannot be resolved, ignoring it.
[INFO] [stdout]   --> src/lib.rs:50:57
[INFO] [stdout]    |
[INFO] [stdout] 50 | //! Enabling the ["log" and "log-always" feature flags][flags] on the `tracing`
[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: `[flags]` cannot be resolved, ignoring it.
[INFO] [stdout]   --> src/lib.rs:50:57
[INFO] [stdout]    |
[INFO] [stdout] 50 | //! Enabling the ["log" and "log-always" feature flags][flags] on the `tracing`
[INFO] [stdout]    |                                                         ^^^^^ cannot be resolved, ignoring
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[flags]` cannot be resolved, ignoring it.
[INFO] [stdout]   --> src/trace_logger.rs:38:12
[INFO] [stdout]    |
[INFO] [stdout] 38 | /// flags][flags] on the `tracing` crate should be used instead.
[INFO] [stdout]    |            ^^^^^ cannot be resolved, ignoring
[INFO] [stdout]    |
[INFO] [stdout]    = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.85s
[INFO] running `Command { std: "docker" "inspect" "ebc6b5bf6bb0383bc133b9c90ff2f4a7cf19cf396b8894cfee428b42794b11a0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebc6b5bf6bb0383bc133b9c90ff2f4a7cf19cf396b8894cfee428b42794b11a0", kill_on_drop: false }`
[INFO] [stdout] ebc6b5bf6bb0383bc133b9c90ff2f4a7cf19cf396b8894cfee428b42794b11a0