[INFO] crate ucg 0.7.0 is already in cache
[INFO] documenting ucg-0.7.0 against try#66dfc4e010913fbed0c4ea91fc2c010004b0f441 for pr-73566
[INFO] extracting crate ucg 0.7.0 into /workspace/builds/worker-8/source
[INFO] validating manifest of crates.io crate ucg 0.7.0 on toolchain 66dfc4e010913fbed0c4ea91fc2c010004b0f441
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ucg 0.7.0
[INFO] finished tweaking crates.io crate ucg 0.7.0
[INFO] tweaked toml for crates.io crate ucg 0.7.0 written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate crates.io crate ucg 0.7.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2a464127b86ed717749f9093723130b5922f7fd759f1b0016e1fc360eb3d6468
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "2a464127b86ed717749f9093723130b5922f7fd759f1b0016e1fc360eb3d6468", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2a464127b86ed717749f9093723130b5922f7fd759f1b0016e1fc360eb3d6468", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2a464127b86ed717749f9093723130b5922f7fd759f1b0016e1fc360eb3d6468", kill_on_drop: false }`
[INFO] [stdout] 2a464127b86ed717749f9093723130b5922f7fd759f1b0016e1fc360eb3d6468
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+66dfc4e010913fbed0c4ea91fc2c010004b0f441" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d5cfc8dbc60c80115be33f6558c2a837afb669bd153ec408444ff51dc60ffbfe
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d5cfc8dbc60c80115be33f6558c2a837afb669bd153ec408444ff51dc60ffbfe", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling serde v1.0.94
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling same-file v1.0.4
[INFO] [stderr]    Compiling nix v0.13.1
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]     Checking unicode-width v0.1.5
[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 linked-hash-map v0.5.2
[INFO] [stderr]     Checking ucd-util v0.1.3
[INFO] [stderr]     Checking ansi_term v0.9.0
[INFO] [stderr]     Checking utf8-ranges v1.0.3
[INFO] [stderr]     Checking unicode-segmentation v1.3.0
[INFO] [stderr]     Checking strsim v0.6.0
[INFO] [stderr]     Checking dtoa v0.4.4
[INFO] [stderr]     Checking bitflags v0.9.1
[INFO] [stderr]     Checking abortable_parser v0.2.3
[INFO] [stderr]     Checking simple-error v0.1.12
[INFO] [stderr]     Checking regex-syntax v0.6.8
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling walkdir v2.2.8
[INFO] [stderr]    Compiling libc v0.2.59
[INFO] [stderr]     Checking log v0.4.7
[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 yaml-rust v0.4.3
[INFO] [stderr]     Checking textwrap v0.8.0
[INFO] [stderr]     Checking clap v2.26.2
[INFO] [stderr]     Checking aho-corasick v0.7.4
[INFO] [stderr]     Checking base64 v0.10.1
[INFO] [stderr]    Compiling ucg v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking rustyline v4.1.0
[INFO] [stderr]     Checking serde_json v1.0.40
[INFO] [stderr]     Checking serde_yaml v0.8.9
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]  Documenting ucg v0.7.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 23.34s
[INFO] running `Command { std: "docker" "inspect" "d5cfc8dbc60c80115be33f6558c2a837afb669bd153ec408444ff51dc60ffbfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d5cfc8dbc60c80115be33f6558c2a837afb669bd153ec408444ff51dc60ffbfe", kill_on_drop: false }`
[INFO] [stdout] d5cfc8dbc60c80115be33f6558c2a837afb669bd153ec408444ff51dc60ffbfe