[INFO] fetching crate prometheus_exporter 0.8.4...
[INFO] documenting prometheus_exporter-0.8.4 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate prometheus_exporter 0.8.4 into /workspace/builds/worker-3/source
[INFO] validating manifest of crates.io crate prometheus_exporter 0.8.4 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate prometheus_exporter 0.8.4
[INFO] finished tweaking crates.io crate prometheus_exporter 0.8.4
[INFO] tweaked toml for crates.io crate prometheus_exporter 0.8.4 written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate crates.io crate prometheus_exporter 0.8.4 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded reqwest v0.11.4
[INFO] [stderr]   Downloaded security-framework-sys v2.0.0
[INFO] [stderr]   Downloaded http v0.2.2
[INFO] [stderr]   Downloaded smallvec v1.5.1
[INFO] [stderr]   Downloaded parking_lot_core v0.8.2
[INFO] [stderr]   Downloaded thiserror-impl v1.0.20
[INFO] [stderr]   Downloaded thiserror v1.0.20
[INFO] [stderr]   Downloaded syn v1.0.56
[INFO] [stderr]   Downloaded tokio v1.10.0
[INFO] [stderr]   Downloaded hyper v0.14.8
[INFO] [stderr]   Downloaded wasm-bindgen-futures v0.4.19
[INFO] [stderr]   Downloaded tokio-util v0.6.7
[INFO] [stderr]   Downloaded prometheus v0.13.0
[INFO] [stderr]   Downloaded humantime v2.0.1
[INFO] [stderr]   Downloaded time v0.3.5
[INFO] [stderr]   Downloaded time-macros v0.2.3
[INFO] [stderr]   Downloaded tiny_http v0.10.0
[INFO] [stderr]   Downloaded security-framework v2.0.0
[INFO] [stderr]   Downloaded ascii v1.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ae1c4cd725edcc42120575300c423f40256f36fd5603fb2543d8a1b599655ce3
[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" "ae1c4cd725edcc42120575300c423f40256f36fd5603fb2543d8a1b599655ce3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ae1c4cd725edcc42120575300c423f40256f36fd5603fb2543d8a1b599655ce3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ae1c4cd725edcc42120575300c423f40256f36fd5603fb2543d8a1b599655ce3", kill_on_drop: false }`
[INFO] [stdout] ae1c4cd725edcc42120575300c423f40256f36fd5603fb2543d8a1b599655ce3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "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] b72bec06b6e515cdf3d66c252605279c4404a622277dc160dd58f1115035d49f
[INFO] running `Command { std: "docker" "start" "-a" "b72bec06b6e515cdf3d66c252605279c4404a622277dc160dd58f1115035d49f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]     Checking smallvec v1.5.1
[INFO] [stderr]    Compiling time-macros v0.2.3
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]    Compiling prometheus v0.13.0
[INFO] [stderr]     Checking chunked_transfer v1.3.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking ascii v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking form_urlencoded v1.0.0
[INFO] [stderr]     Checking tinyvec v1.1.0
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking time v0.3.5
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]     Checking tiny_http v0.10.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]  Documenting prometheus_exporter v0.8.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.73s
[INFO] running `Command { std: "docker" "inspect" "b72bec06b6e515cdf3d66c252605279c4404a622277dc160dd58f1115035d49f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b72bec06b6e515cdf3d66c252605279c4404a622277dc160dd58f1115035d49f", kill_on_drop: false }`
[INFO] [stdout] b72bec06b6e515cdf3d66c252605279c4404a622277dc160dd58f1115035d49f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "DOCS_RS=1" "-e" "RUSTC_BOOTSTRAP=1" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d190cb871061d98bc6d0581d85cb2ecb09a0f8a142ba5463de30be9999fc3251" "/opt/rustwide/cargo-home/bin/cargo" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--features" "logging internal_metrics" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] aa7cfced92c2f350e56b67caf2305e258586ab0fb0d5595d9240b049b52e28a4
[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" "aa7cfced92c2f350e56b67caf2305e258586ab0fb0d5595d9240b049b52e28a4", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling libc v0.2.99
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.56
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]     Checking smallvec v1.5.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling prometheus v0.13.0
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling time-macros v0.2.3
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking chunked_transfer v1.3.0
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking ascii v1.0.0
[INFO] [stderr]     Checking lock_api v0.4.2
[INFO] [stderr]     Checking tinyvec v1.1.0
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking unicode-bidi v0.3.4
[INFO] [stderr]     Checking form_urlencoded v1.0.0
[INFO] [stderr]     Checking parking_lot_core v0.8.2
[INFO] [stderr]     Checking unicode-normalization v0.1.16
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking time v0.3.5
[INFO] [stderr]     Checking idna v0.2.0
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]     Checking tiny_http v0.10.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]  Documenting prometheus_exporter v0.8.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 41.85s
[INFO] running `Command { std: "docker" "inspect" "aa7cfced92c2f350e56b67caf2305e258586ab0fb0d5595d9240b049b52e28a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aa7cfced92c2f350e56b67caf2305e258586ab0fb0d5595d9240b049b52e28a4", kill_on_drop: false }`
[INFO] [stdout] aa7cfced92c2f350e56b67caf2305e258586ab0fb0d5595d9240b049b52e28a4