[INFO] fetching crate serde_prometheus 0.1.6...
[INFO] documenting serde_prometheus-0.1.6 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate serde_prometheus 0.1.6 into /workspace/builds/worker-9/source
[INFO] validating manifest of crates.io crate serde_prometheus 0.1.6 on toolchain beta-2022-05-20
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate serde_prometheus 0.1.6
[INFO] finished tweaking crates.io crate serde_prometheus 0.1.6
[INFO] tweaked toml for crates.io crate serde_prometheus 0.1.6 written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate crates.io crate serde_prometheus 0.1.6 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+beta-2022-05-20" "metadata" "--no-deps" "--format-version=1", 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] 631ee08789d56cdbcee93605269ad98d687fe8d2c182f0951fe11e0d5e94f515
[INFO] running `Command { std: "docker" "start" "-a" "631ee08789d56cdbcee93605269ad98d687fe8d2c182f0951fe11e0d5e94f515", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "631ee08789d56cdbcee93605269ad98d687fe8d2c182f0951fe11e0d5e94f515", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "631ee08789d56cdbcee93605269ad98d687fe8d2c182f0951fe11e0d5e94f515", kill_on_drop: false }`
[INFO] [stdout] 631ee08789d56cdbcee93605269ad98d687fe8d2c182f0951fe11e0d5e94f515
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+beta-2022-05-20" "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] 99d0a74765125ea8c38d865eac8b968698d40faffb7292fcb9c8b1ee0895a3e1
[INFO] running `Command { std: "docker" "start" "-a" "99d0a74765125ea8c38d865eac8b968698d40faffb7292fcb9c8b1ee0895a3e1", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.20
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking ftoa v0.1.1
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]    Compiling snafu-derive v0.6.8
[INFO] [stderr]     Checking snafu v0.6.8
[INFO] [stderr]     Checking serde v1.0.110
[INFO] [stderr]  Documenting serde_prometheus v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 39.95s
[INFO] running `Command { std: "docker" "inspect" "99d0a74765125ea8c38d865eac8b968698d40faffb7292fcb9c8b1ee0895a3e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "99d0a74765125ea8c38d865eac8b968698d40faffb7292fcb9c8b1ee0895a3e1", kill_on_drop: false }`
[INFO] [stdout] 99d0a74765125ea8c38d865eac8b968698d40faffb7292fcb9c8b1ee0895a3e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", 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] 2a0ed3983568cffd7a3ebd899bb802c23f8bc22050fd6d71ff73522d30cfc89a
[INFO] running `Command { std: "docker" "start" "-a" "2a0ed3983568cffd7a3ebd899bb802c23f8bc22050fd6d71ff73522d30cfc89a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.12
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling syn v1.0.20
[INFO] [stderr]    Compiling memchr v2.3.3
[INFO] [stderr]    Compiling serde v1.0.110
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking ftoa v0.1.1
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling indexmap v1.6.2
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]    Compiling quote v1.0.4
[INFO] [stderr]     Checking regex v1.3.7
[INFO] [stderr]    Compiling serde_derive v1.0.110
[INFO] [stderr]    Compiling snafu-derive v0.6.8
[INFO] [stderr]     Checking snafu v0.6.8
[INFO] [stderr]  Documenting serde_prometheus v0.1.6 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 51.38s
[INFO] running `Command { std: "docker" "inspect" "2a0ed3983568cffd7a3ebd899bb802c23f8bc22050fd6d71ff73522d30cfc89a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a0ed3983568cffd7a3ebd899bb802c23f8bc22050fd6d71ff73522d30cfc89a", kill_on_drop: false }`
[INFO] [stdout] 2a0ed3983568cffd7a3ebd899bb802c23f8bc22050fd6d71ff73522d30cfc89a