[INFO] fetching crate u144 0.4.0...
[INFO] documenting u144-0.4.0 against beta-2022-05-20 for beta-1.62-rustdoc-1
[INFO] extracting crate u144 0.4.0 into /workspace/builds/worker-28/source
[INFO] validating manifest of crates.io crate u144 0.4.0 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 u144 0.4.0
[INFO] finished tweaking crates.io crate u144 0.4.0
[INFO] tweaked toml for crates.io crate u144 0.4.0 written to /workspace/builds/worker-28/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-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 2c71970ecf506c95defb1be59382caccb377110db7a6b586083aedb6eb56b4d3
[INFO] running `Command { std: "docker" "start" "-a" "2c71970ecf506c95defb1be59382caccb377110db7a6b586083aedb6eb56b4d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2c71970ecf506c95defb1be59382caccb377110db7a6b586083aedb6eb56b4d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c71970ecf506c95defb1be59382caccb377110db7a6b586083aedb6eb56b4d3", kill_on_drop: false }`
[INFO] [stdout] 2c71970ecf506c95defb1be59382caccb377110db7a6b586083aedb6eb56b4d3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 1528d9a51561d5ba7748e1472c2e1a7114d764171d7d3d926d98acce383eab08
[INFO] running `Command { std: "docker" "start" "-a" "1528d9a51561d5ba7748e1472c2e1a7114d764171d7d3d926d98acce383eab08", kill_on_drop: false }`
[INFO] [stderr]     Checking fixed-array v0.2.0
[INFO] [stderr]     Checking uints v0.7.0
[INFO] [stderr]  Documenting u144 v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.41s
[INFO] running `Command { std: "docker" "inspect" "1528d9a51561d5ba7748e1472c2e1a7114d764171d7d3d926d98acce383eab08", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1528d9a51561d5ba7748e1472c2e1a7114d764171d7d3d926d98acce383eab08", kill_on_drop: false }`
[INFO] [stdout] 1528d9a51561d5ba7748e1472c2e1a7114d764171d7d3d926d98acce383eab08
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-28/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] 8f88bde382e11aa3b66cc3dc2d02d5c6dd8464542892c2918e798e0a0775aeab
[INFO] running `Command { std: "docker" "start" "-a" "8f88bde382e11aa3b66cc3dc2d02d5c6dd8464542892c2918e798e0a0775aeab", kill_on_drop: false }`
[INFO] [stderr]     Checking fixed-array v0.2.0
[INFO] [stderr]     Checking uints v0.7.0
[INFO] [stderr]  Documenting u144 v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `Command { std: "docker" "inspect" "8f88bde382e11aa3b66cc3dc2d02d5c6dd8464542892c2918e798e0a0775aeab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f88bde382e11aa3b66cc3dc2d02d5c6dd8464542892c2918e798e0a0775aeab", kill_on_drop: false }`
[INFO] [stdout] 8f88bde382e11aa3b66cc3dc2d02d5c6dd8464542892c2918e798e0a0775aeab