[INFO] fetching crate epimetheus 0.7.1...
[INFO] documenting epimetheus-0.7.1 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate epimetheus 0.7.1 into /workspace/builds/worker-50/source
[INFO] validating manifest of crates.io crate epimetheus 0.7.1 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 epimetheus 0.7.1
[INFO] finished tweaking crates.io crate epimetheus 0.7.1
[INFO] tweaked toml for crates.io crate epimetheus 0.7.1 written to /workspace/builds/worker-50/source/Cargo.toml
[INFO] crate crates.io crate epimetheus 0.7.1 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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] [stdout] 9cfbbaf199a8133e5db2a7dd212eb61f5ad95ab7597ae5a171bfbe64881f631b
[INFO] running `Command { std: "docker" "start" "-a" "9cfbbaf199a8133e5db2a7dd212eb61f5ad95ab7597ae5a171bfbe64881f631b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9cfbbaf199a8133e5db2a7dd212eb61f5ad95ab7597ae5a171bfbe64881f631b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9cfbbaf199a8133e5db2a7dd212eb61f5ad95ab7597ae5a171bfbe64881f631b", kill_on_drop: false }`
[INFO] [stdout] 9cfbbaf199a8133e5db2a7dd212eb61f5ad95ab7597ae5a171bfbe64881f631b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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] [stdout] 6f11c08d73bcc2083ec4aeefc865ba487a22ef1428dbd7a7810c92d9d2f50b87
[INFO] running `Command { std: "docker" "start" "-a" "6f11c08d73bcc2083ec4aeefc865ba487a22ef1428dbd7a7810c92d9d2f50b87", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]  Documenting epimetheus v0.7.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.64s
[INFO] running `Command { std: "docker" "inspect" "6f11c08d73bcc2083ec4aeefc865ba487a22ef1428dbd7a7810c92d9d2f50b87", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6f11c08d73bcc2083ec4aeefc865ba487a22ef1428dbd7a7810c92d9d2f50b87", kill_on_drop: false }`
[INFO] [stdout] 6f11c08d73bcc2083ec4aeefc865ba487a22ef1428dbd7a7810c92d9d2f50b87
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-50/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" "+beta-2022-05-20" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 844825a20a06687b498c0614d345e395327a87ff0ce8c516f97aee24d8ed8ebb
[INFO] running `Command { std: "docker" "start" "-a" "844825a20a06687b498c0614d345e395327a87ff0ce8c516f97aee24d8ed8ebb", kill_on_drop: false }`
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking once_cell v1.8.0
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]  Documenting epimetheus v0.7.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.32s
[INFO] running `Command { std: "docker" "inspect" "844825a20a06687b498c0614d345e395327a87ff0ce8c516f97aee24d8ed8ebb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "844825a20a06687b498c0614d345e395327a87ff0ce8c516f97aee24d8ed8ebb", kill_on_drop: false }`
[INFO] [stdout] 844825a20a06687b498c0614d345e395327a87ff0ce8c516f97aee24d8ed8ebb