[INFO] fetching crate metrics-core 0.5.2...
[INFO] documenting metrics-core-0.5.2 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate metrics-core 0.5.2 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate metrics-core 0.5.2 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 metrics-core 0.5.2
[INFO] finished tweaking crates.io crate metrics-core 0.5.2
[INFO] tweaked toml for crates.io crate metrics-core 0.5.2 written to /workspace/builds/worker-4/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] 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" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 238c0b41083aed14ec22c94acf48574f388a03a0bd69089bbce4047dba03f9de
[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" "238c0b41083aed14ec22c94acf48574f388a03a0bd69089bbce4047dba03f9de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "238c0b41083aed14ec22c94acf48574f388a03a0bd69089bbce4047dba03f9de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "238c0b41083aed14ec22c94acf48574f388a03a0bd69089bbce4047dba03f9de", kill_on_drop: false }`
[INFO] [stdout] 238c0b41083aed14ec22c94acf48574f388a03a0bd69089bbce4047dba03f9de
[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" "+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] ca16752acabee52c630c25ab17f75bbbcd817825ca7af7583cdf16c33688e0a8
[INFO] running `Command { std: "docker" "start" "-a" "ca16752acabee52c630c25ab17f75bbbcd817825ca7af7583cdf16c33688e0a8", kill_on_drop: false }`
[INFO] [stderr]  Documenting metrics-core v0.5.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `[metrics_core::IntoLabels]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/lib.rs:318:57
[INFO] [stdout]     |
[INFO] [stdout] 318 | /// to do the exact same thing in calls that depend on [`metrics_core::IntoLabels`].
[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 1.30s
[INFO] running `Command { std: "docker" "inspect" "ca16752acabee52c630c25ab17f75bbbcd817825ca7af7583cdf16c33688e0a8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ca16752acabee52c630c25ab17f75bbbcd817825ca7af7583cdf16c33688e0a8", kill_on_drop: false }`
[INFO] [stdout] ca16752acabee52c630c25ab17f75bbbcd817825ca7af7583cdf16c33688e0a8