[INFO] cloning repository https://github.com/mitsuhiko/unbox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mitsuhiko/unbox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmitsuhiko%2Funbox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmitsuhiko%2Funbox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 2ed7338b491e5a258c17d076245f2e3c62510d8b
[INFO] documenting mitsuhiko/unbox against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmitsuhiko%2Funbox" "/workspace/builds/worker-9/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-9/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mitsuhiko/unbox on toolchain beta-2020-08-29
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mitsuhiko/unbox
[INFO] finished tweaking git repo https://github.com/mitsuhiko/unbox
[INFO] tweaked toml for git repo https://github.com/mitsuhiko/unbox written to /workspace/builds/worker-9/source/Cargo.toml
[INFO] crate git repo https://github.com/mitsuhiko/unbox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-08-29" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded parking_lot v0.7.0
[INFO] [stderr]   Downloaded smallvec v0.6.7
[INFO] [stderr]   Downloaded parking_lot v0.4.8
[INFO] [stderr]   Downloaded autocfg v0.1.1
[INFO] [stderr]   Downloaded rustc-demangle v0.1.11
[INFO] [stderr]   Downloaded console v0.7.2
[INFO] [stderr]   Downloaded miniz_oxide_c_api v0.2.0
[INFO] [stderr]   Downloaded plain v0.2.3
[INFO] [stderr]   Downloaded scroll_derive v0.9.5
[INFO] [stderr]   Downloaded scroll v0.9.2
[INFO] [stderr]   Downloaded encode_unicode v0.3.5
[INFO] [stderr]   Downloaded ar v0.6.2
[INFO] [stderr]   Downloaded flate2 v1.0.6
[INFO] [stderr]   Downloaded cab v0.2.0
[INFO] [stderr]   Downloaded strum v0.13.0
[INFO] [stderr]   Downloaded indicatif v0.11.0
[INFO] [stderr]   Downloaded number_prefix v0.2.8
[INFO] [stderr]   Downloaded strum_macros v0.13.0
[INFO] [stderr]   Downloaded tree_magic v0.2.1
[INFO] [stderr]   Downloaded libflate v0.1.19
[INFO] [stderr]   Downloaded clicolors-control v1.0.0
[INFO] [stderr]   Downloaded nom v2.2.1
[INFO] [stderr]   Downloaded zip v0.5.0
[INFO] [stderr]   Downloaded xz2 v0.1.6
[INFO] [stderr]   Downloaded miniz_oxide v0.2.0
[INFO] [stderr]   Downloaded goblin v0.0.19
[INFO] [stderr]   Downloaded lzma-sys v0.1.12
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2e1b0239e52bf8545cbca611970c2c006a1d3777cd3c81679b830c855035ad31
[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" "2e1b0239e52bf8545cbca611970c2c006a1d3777cd3c81679b830c855035ad31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2e1b0239e52bf8545cbca611970c2c006a1d3777cd3c81679b830c855035ad31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2e1b0239e52bf8545cbca611970c2c006a1d3777cd3c81679b830c855035ad31", kill_on_drop: false }`
[INFO] [stdout] 2e1b0239e52bf8545cbca611970c2c006a1d3777cd3c81679b830c855035ad31
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-9/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-08-29" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 35de11f860c409fdbac28d0654d6464789ccec4b3f02d9ea09bb93d252e0ff7b
[INFO] running `Command { std: "docker" "start" "-a" "35de11f860c409fdbac28d0654d6464789ccec4b3f02d9ea09bb93d252e0ff7b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.45
[INFO] [stderr]    Compiling failure_derive v0.1.3
[INFO] [stderr]     Checking ordermap v0.3.5
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]     Checking fixedbitset v0.1.9
[INFO] [stderr]     Checking rustc-demangle v0.1.11
[INFO] [stderr]     Checking plain v0.2.3
[INFO] [stderr]     Checking nom v2.2.1
[INFO] [stderr]     Checking strum v0.13.0
[INFO] [stderr]    Compiling bzip2-sys v0.1.7
[INFO] [stderr]    Compiling miniz_oxide_c_api v0.2.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]     Checking regex-syntax v0.6.4
[INFO] [stderr]    Compiling backtrace v0.3.13
[INFO] [stderr]    Compiling lzma-sys v0.1.12
[INFO] [stderr]     Checking ar v0.6.2
[INFO] [stderr]    Compiling scroll v0.9.2
[INFO] [stderr]     Checking num-integer v0.1.39
[INFO] [stderr]     Checking number_prefix v0.2.8
[INFO] [stderr]    Compiling syn v0.15.23
[INFO] [stderr]    Compiling heck v0.3.1
[INFO] [stderr]     Checking petgraph v0.4.13
[INFO] [stderr]     Checking rand v0.6.1
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking rand v0.4.3
[INFO] [stderr]     Checking time v0.1.41
[INFO] [stderr]     Checking clicolors-control v1.0.0
[INFO] [stderr]     Checking termios v0.3.1
[INFO] [stderr]     Checking filetime v0.2.4
[INFO] [stderr]     Checking xattr v0.2.2
[INFO] [stderr]     Checking rand v0.5.5
[INFO] [stderr]     Checking memmap v0.7.0
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking bzip2 v0.3.3
[INFO] [stderr]     Checking tar v0.4.20
[INFO] [stderr]     Checking xz2 v0.1.6
[INFO] [stderr]     Checking flate2 v1.0.6
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking zip v0.5.0
[INFO] [stderr]     Checking parking_lot_core v0.2.14
[INFO] [stderr]     Checking parking_lot v0.4.8
[INFO] [stderr]     Checking tree_magic v0.2.1
[INFO] [stderr]     Checking uuid v0.7.1
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking cab v0.2.0
[INFO] [stderr]     Checking parking_lot v0.7.0
[INFO] [stderr]     Checking regex v1.1.0
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]     Checking console v0.7.2
[INFO] [stderr]     Checking indicatif v0.11.0
[INFO] [stderr]    Compiling scroll_derive v0.9.5
[INFO] [stderr]    Compiling strum_macros v0.13.0
[INFO] [stderr]     Checking failure v0.1.3
[INFO] [stderr]     Checking goblin v0.0.19
[INFO] [stderr]  Documenting unbox v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 42.45s
[INFO] running `Command { std: "docker" "inspect" "35de11f860c409fdbac28d0654d6464789ccec4b3f02d9ea09bb93d252e0ff7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "35de11f860c409fdbac28d0654d6464789ccec4b3f02d9ea09bb93d252e0ff7b", kill_on_drop: false }`
[INFO] [stdout] 35de11f860c409fdbac28d0654d6464789ccec4b3f02d9ea09bb93d252e0ff7b