[INFO] fetching crate ucg 0.7.2...
[INFO] documenting ucg-0.7.2 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate ucg 0.7.2 into /workspace/builds/worker-31/source
[INFO] validating manifest of crates.io crate ucg 0.7.2 on toolchain 1.61.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ucg 0.7.2
[INFO] finished tweaking crates.io crate ucg 0.7.2
[INFO] tweaked toml for crates.io crate ucg 0.7.2 written to /workspace/builds/worker-31/source/Cargo.toml
[INFO] crate crates.io crate ucg 0.7.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded aho-corasick v0.7.4
[INFO] [stderr]   Downloaded backtrace v0.3.32
[INFO] [stderr]   Downloaded log v0.4.7
[INFO] [stderr]   Downloaded clap v2.26.2
[INFO] [stderr]   Downloaded serde v1.0.94
[INFO] [stderr]   Downloaded textwrap v0.8.0
[INFO] [stderr]   Downloaded regex v1.1.9
[INFO] [stderr]   Downloaded rustyline v4.1.0
[INFO] [stderr]   Downloaded regex-syntax v0.6.8
[INFO] [stderr]   Downloaded libc v0.2.59
[INFO] [stderr]   Downloaded simple-error v0.1.12
[INFO] [stderr]   Downloaded abortable_parser v0.2.3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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" "+1.61.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9668ccb02e3fa5ecbc1e9337f16b38c8674682da289067dbe71e77efc698c2af
[INFO] running `Command { std: "docker" "start" "-a" "9668ccb02e3fa5ecbc1e9337f16b38c8674682da289067dbe71e77efc698c2af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9668ccb02e3fa5ecbc1e9337f16b38c8674682da289067dbe71e77efc698c2af", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9668ccb02e3fa5ecbc1e9337f16b38c8674682da289067dbe71e77efc698c2af", kill_on_drop: false }`
[INFO] [stdout] 9668ccb02e3fa5ecbc1e9337f16b38c8674682da289067dbe71e77efc698c2af
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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" "+1.61.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 087f313b33b889e73289627f718d444ed71d63f972964d06c7b4dcfd3829edfa
[INFO] running `Command { std: "docker" "start" "-a" "087f313b33b889e73289627f718d444ed71d63f972964d06c7b4dcfd3829edfa", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.59
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]    Compiling nix v0.13.1
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling regex v1.1.9
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking dtoa v0.4.4
[INFO] [stderr]     Checking utf8-ranges v1.0.3
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking unicode-segmentation v1.3.0
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking xml-rs v0.8.0
[INFO] [stderr]     Checking abortable_parser v0.2.3
[INFO] [stderr]     Checking simple-error v0.1.12
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking regex-syntax v0.6.8
[INFO] [stderr]    Compiling walkdir v2.2.8
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking aho-corasick v0.7.4
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking dirs v1.0.5
[INFO] [stderr]     Checking textwrap v0.8.0
[INFO] [stderr]    Compiling ucg v0.7.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking clap v2.26.2
[INFO] [stderr]     Checking rustyline v4.1.0
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]  Documenting ucg v0.7.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.21s
[INFO] running `Command { std: "docker" "inspect" "087f313b33b889e73289627f718d444ed71d63f972964d06c7b4dcfd3829edfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "087f313b33b889e73289627f718d444ed71d63f972964d06c7b4dcfd3829edfa", kill_on_drop: false }`
[INFO] [stdout] 087f313b33b889e73289627f718d444ed71d63f972964d06c7b4dcfd3829edfa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-31/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" "+1.61.0" "rustdoc" "--lib" "-Zrustdoc-map" "--frozen" "--message-format=json" "--" "-Z" "unstable-options" "--document-private-items", kill_on_drop: false }`
[INFO] [stdout] 29219e7ab9613a7e7a9c5b6d3cd7d5b60878a0fa0da73c8b21905d1b01234bb5
[INFO] running `Command { std: "docker" "start" "-a" "29219e7ab9613a7e7a9c5b6d3cd7d5b60878a0fa0da73c8b21905d1b01234bb5", 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] [stderr]    Compiling libc v0.2.59
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling ryu v1.0.0
[INFO] [stderr]     Checking cfg-if v0.1.9
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]    Compiling log v0.4.7
[INFO] [stderr]    Compiling nix v0.13.1
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking linked-hash-map v0.5.4
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]    Compiling regex v1.1.9
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking unicode-segmentation v1.3.0
[INFO] [stderr]     Checking utf8-ranges v1.0.3
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking dtoa v0.4.4
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking xml-rs v0.8.0
[INFO] [stderr]     Checking simple-error v0.1.12
[INFO] [stderr]     Checking abortable_parser v0.2.3
[INFO] [stderr]    Compiling walkdir v2.2.8
[INFO] [stderr]     Checking regex-syntax v0.6.8
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking yaml-rust v0.4.5
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]     Checking aho-corasick v0.7.4
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking textwrap v0.8.0
[INFO] [stderr]    Compiling ucg v0.7.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking clap v2.26.2
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking rustyline v4.1.0
[INFO] [stderr]     Checking serde_yaml v0.8.17
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]  Documenting ucg v0.7.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 12.05s
[INFO] running `Command { std: "docker" "inspect" "29219e7ab9613a7e7a9c5b6d3cd7d5b60878a0fa0da73c8b21905d1b01234bb5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "29219e7ab9613a7e7a9c5b6d3cd7d5b60878a0fa0da73c8b21905d1b01234bb5", kill_on_drop: false }`
[INFO] [stdout] 29219e7ab9613a7e7a9c5b6d3cd7d5b60878a0fa0da73c8b21905d1b01234bb5