[INFO] fetching crate tracing-tower 0.0.0...
[INFO] documenting tracing-tower-0.0.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate tracing-tower 0.0.0 into /workspace/builds/worker-34/source
[INFO] validating manifest of crates.io crate tracing-tower 0.0.0 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 tracing-tower 0.0.0
[INFO] finished tweaking crates.io crate tracing-tower 0.0.0
[INFO] tweaked toml for crates.io crate tracing-tower 0.0.0 written to /workspace/builds/worker-34/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-05-20" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[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-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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] ccc287c33fc98e4723c937de018e2040e8add309db6d47c1eba97726d46308eb
[INFO] running `Command { std: "docker" "start" "-a" "ccc287c33fc98e4723c937de018e2040e8add309db6d47c1eba97726d46308eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ccc287c33fc98e4723c937de018e2040e8add309db6d47c1eba97726d46308eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ccc287c33fc98e4723c937de018e2040e8add309db6d47c1eba97726d46308eb", kill_on_drop: false }`
[INFO] [stdout] ccc287c33fc98e4723c937de018e2040e8add309db6d47c1eba97726d46308eb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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] 01b87ef70696542269aa636451ac9243978d76b22a34c40ec43f52ece6edf4df
[INFO] running `Command { std: "docker" "start" "-a" "01b87ef70696542269aa636451ac9243978d76b22a34c40ec43f52ece6edf4df", kill_on_drop: false }`
[INFO] [stderr]  Documenting tracing-tower v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "01b87ef70696542269aa636451ac9243978d76b22a34c40ec43f52ece6edf4df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "01b87ef70696542269aa636451ac9243978d76b22a34c40ec43f52ece6edf4df", kill_on_drop: false }`
[INFO] [stdout] 01b87ef70696542269aa636451ac9243978d76b22a34c40ec43f52ece6edf4df
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-34/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] [stdout] bf4a48875b72d411e64bc23556b4472e64a7d36cbcff2489bb65e8805643bcd7
[INFO] running `Command { std: "docker" "start" "-a" "bf4a48875b72d411e64bc23556b4472e64a7d36cbcff2489bb65e8805643bcd7", kill_on_drop: false }`
[INFO] [stderr]  Documenting tracing-tower v0.0.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
[INFO] running `Command { std: "docker" "inspect" "bf4a48875b72d411e64bc23556b4472e64a7d36cbcff2489bb65e8805643bcd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bf4a48875b72d411e64bc23556b4472e64a7d36cbcff2489bb65e8805643bcd7", kill_on_drop: false }`
[INFO] [stdout] bf4a48875b72d411e64bc23556b4472e64a7d36cbcff2489bb65e8805643bcd7