[INFO] fetching crate concurrency_traits 0.7.2...
[INFO] documenting concurrency_traits-0.7.2 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate concurrency_traits 0.7.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate concurrency_traits 0.7.2 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 concurrency_traits 0.7.2
[INFO] finished tweaking crates.io crate concurrency_traits 0.7.2
[INFO] tweaked toml for crates.io crate concurrency_traits 0.7.2 written to /workspace/builds/worker-0/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] 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-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 1881e7b91844a68481e9d4699809bf29e23a074b7deb0130e66af880545f7df3
[INFO] running `Command { std: "docker" "start" "-a" "1881e7b91844a68481e9d4699809bf29e23a074b7deb0130e66af880545f7df3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1881e7b91844a68481e9d4699809bf29e23a074b7deb0130e66af880545f7df3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1881e7b91844a68481e9d4699809bf29e23a074b7deb0130e66af880545f7df3", kill_on_drop: false }`
[INFO] [stdout] 1881e7b91844a68481e9d4699809bf29e23a074b7deb0130e66af880545f7df3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 4e25c3c8f129f31f4f79a4e8ca6af6f453bd720536c6678cd2cf55a6959a298d
[INFO] running `Command { std: "docker" "start" "-a" "4e25c3c8f129f31f4f79a4e8ca6af6f453bd720536c6678cd2cf55a6959a298d", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling async-trait v0.1.53
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking atomic_swapping v0.1.0
[INFO] [stderr]     Checking simple_futures v0.1.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking num-complex v0.4.1
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]  Documenting concurrency_traits v0.7.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 9.56s
[INFO] running `Command { std: "docker" "inspect" "4e25c3c8f129f31f4f79a4e8ca6af6f453bd720536c6678cd2cf55a6959a298d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4e25c3c8f129f31f4f79a4e8ca6af6f453bd720536c6678cd2cf55a6959a298d", kill_on_drop: false }`
[INFO] [stdout] 4e25c3c8f129f31f4f79a4e8ca6af6f453bd720536c6678cd2cf55a6959a298d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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] 4f2354dd03b47d32f40cb5c6962d81e7e30cb0473771f019f927b30d6b5176a9
[INFO] running `Command { std: "docker" "start" "-a" "4f2354dd03b47d32f40cb5c6962d81e7e30cb0473771f019f927b30d6b5176a9", kill_on_drop: false }`
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling async-trait v0.1.53
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking atomic_swapping v0.1.0
[INFO] [stderr]     Checking simple_futures v0.1.2
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling num-rational v0.4.0
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking num-complex v0.4.1
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]  Documenting concurrency_traits v0.7.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 22.01s
[INFO] running `Command { std: "docker" "inspect" "4f2354dd03b47d32f40cb5c6962d81e7e30cb0473771f019f927b30d6b5176a9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f2354dd03b47d32f40cb5c6962d81e7e30cb0473771f019f927b30d6b5176a9", kill_on_drop: false }`
[INFO] [stdout] 4f2354dd03b47d32f40cb5c6962d81e7e30cb0473771f019f927b30d6b5176a9