[INFO] fetching crate metrics-exporter-http-async_std 0.1.0...
[INFO] documenting metrics-exporter-http-async_std-0.1.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate metrics-exporter-http-async_std 0.1.0 into /workspace/builds/worker-39/source
[INFO] validating manifest of crates.io crate metrics-exporter-http-async_std 0.1.0 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 metrics-exporter-http-async_std 0.1.0
[INFO] finished tweaking crates.io crate metrics-exporter-http-async_std 0.1.0
[INFO] tweaked toml for crates.io crate metrics-exporter-http-async_std 0.1.0 written to /workspace/builds/worker-39/source/Cargo.toml
[INFO] crate crates.io crate metrics-exporter-http-async_std 0.1.0 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]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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] 8d73310ade53d746db9c48cbdd22f79c9cce6c8a830d38d0924491a8843f37e6
[INFO] running `Command { std: "docker" "start" "-a" "8d73310ade53d746db9c48cbdd22f79c9cce6c8a830d38d0924491a8843f37e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8d73310ade53d746db9c48cbdd22f79c9cce6c8a830d38d0924491a8843f37e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d73310ade53d746db9c48cbdd22f79c9cce6c8a830d38d0924491a8843f37e6", kill_on_drop: false }`
[INFO] [stdout] 8d73310ade53d746db9c48cbdd22f79c9cce6c8a830d38d0924491a8843f37e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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] [stdout] 72e4c7778b39861e6560f6fd1ac8879581f0d90164ce668ed19c608bcdda6b58
[INFO] running `Command { std: "docker" "start" "-a" "72e4c7778b39861e6560f6fd1ac8879581f0d90164ce668ed19c608bcdda6b58", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling proc-macro2 v1.0.13
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling syn v1.0.22
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]     Checking scopeguard v1.1.0
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[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking futures-io v0.3.5
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[INFO] [stderr]     Checking futures-timer v2.0.2
[INFO] [stderr]     Checking metrics-core v0.5.2
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
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[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking kv-log-macro v1.0.5
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[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]     Checking async-std v1.5.0
[INFO] [stderr]  Documenting metrics-exporter-http-async_std v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.55s
[INFO] running `Command { std: "docker" "inspect" "72e4c7778b39861e6560f6fd1ac8879581f0d90164ce668ed19c608bcdda6b58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72e4c7778b39861e6560f6fd1ac8879581f0d90164ce668ed19c608bcdda6b58", kill_on_drop: false }`
[INFO] [stdout] 72e4c7778b39861e6560f6fd1ac8879581f0d90164ce668ed19c608bcdda6b58
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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" "RUSTC_BOOTSTRAP=1" "-e" "DOCS_RS=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" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 4f3c9f9db617fda4426c3de648b6a4490ab570b67d22603f5b17313e962fabdd
[INFO] running `Command { std: "docker" "start" "-a" "4f3c9f9db617fda4426c3de648b6a4490ab570b67d22603f5b17313e962fabdd", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling libc v0.2.70
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling proc-macro2 v1.0.13
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.22
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[INFO] [stderr]    Compiling memchr v2.3.3
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[INFO] [stderr]     Checking futures-core v0.3.5
[INFO] [stderr]     Checking metrics-core v0.5.2
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling memoffset v0.5.4
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking kv-log-macro v1.0.5
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[INFO] [stderr]     Checking net2 v0.2.34
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[INFO] [stderr]     Checking crossbeam-channel v0.4.2
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking crossbeam-deque v0.7.3
[INFO] [stderr]    Compiling async-attributes v1.1.1
[INFO] [stderr]     Checking async-std v1.5.0
[INFO] [stderr]  Documenting metrics-exporter-http-async_std v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 10.59s
[INFO] running `Command { std: "docker" "inspect" "4f3c9f9db617fda4426c3de648b6a4490ab570b67d22603f5b17313e962fabdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f3c9f9db617fda4426c3de648b6a4490ab570b67d22603f5b17313e962fabdd", kill_on_drop: false }`
[INFO] [stdout] 4f3c9f9db617fda4426c3de648b6a4490ab570b67d22603f5b17313e962fabdd