[INFO] fetching crate skim 0.8.2...
[INFO] documenting skim-0.8.2 against beta-2020-08-29 for beta-1.47-rustdoc-1
[INFO] extracting crate skim 0.8.2 into /workspace/builds/worker-12/source
[INFO] validating manifest of crates.io crate skim 0.8.2 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 crates.io crate skim 0.8.2
[INFO] finished tweaking crates.io crate skim 0.8.2
[INFO] tweaked toml for crates.io crate skim 0.8.2 written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate crates.io crate skim 0.8.2 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]  Downloading crates ...
[INFO] [stderr]   Downloaded nix v0.14.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] cd4ec57959e5db17b61f9a6289b4fbaf53c9b713b1f4ab58da4e5335be82607e
[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" "cd4ec57959e5db17b61f9a6289b4fbaf53c9b713b1f4ab58da4e5335be82607e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd4ec57959e5db17b61f9a6289b4fbaf53c9b713b1f4ab58da4e5335be82607e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd4ec57959e5db17b61f9a6289b4fbaf53c9b713b1f4ab58da4e5335be82607e", kill_on_drop: false }`
[INFO] [stdout] cd4ec57959e5db17b61f9a6289b4fbaf53c9b713b1f4ab58da4e5335be82607e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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] [stdout] 863bddc3e0520dc0acbd9044de47d62d52e15fd982869c6671564dca5a6bc7aa
[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" "863bddc3e0520dc0acbd9044de47d62d52e15fd982869c6671564dca5a6bc7aa", 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]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking cfg-if v0.1.7
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling memchr v2.2.0
[INFO] [stderr]    Compiling num-traits v0.2.6
[INFO] [stderr]    Compiling num-integer v0.1.39
[INFO] [stderr]    Compiling rayon-core v1.4.1
[INFO] [stderr]    Compiling nix v0.14.0
[INFO] [stderr]    Compiling regex v1.1.6
[INFO] [stderr]    Compiling rayon v1.0.3
[INFO] [stderr]     Checking either v1.5.1
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking lazy_static v1.3.0
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking regex-syntax v0.6.6
[INFO] [stderr]     Checking crossbeam-utils v0.2.2
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]     Checking crossbeam-utils v0.7.0
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking thread_local v1.0.0
[INFO] [stderr]     Checking fuzzy-matcher v0.3.4
[INFO] [stderr]     Checking crossbeam-epoch v0.8.0
[INFO] [stderr]     Checking crossbeam-queue v0.2.1
[INFO] [stderr]     Checking crossbeam-channel v0.4.0
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking crossbeam-epoch v0.3.1
[INFO] [stderr]     Checking aho-corasick v0.7.3
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking time v0.1.42
[INFO] [stderr]     Checking atty v0.2.11
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking crossbeam-deque v0.2.0
[INFO] [stderr]     Checking term v0.6.1
[INFO] [stderr]     Checking chrono v0.4.6
[INFO] [stderr]     Checking timer v0.2.0
[INFO] [stderr]     Checking env_logger v0.6.1
[INFO] [stderr]     Checking tuikit v0.3.3
[INFO] [stderr]    Compiling darling_core v0.10.2
[INFO] [stderr]    Compiling darling_macro v0.10.2
[INFO] [stderr]    Compiling darling v0.10.2
[INFO] [stderr]    Compiling derive_builder_core v0.9.0
[INFO] [stderr]    Compiling derive_builder v0.9.0
[INFO] [stderr]     Checking skim v0.8.2 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting skim v0.8.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 52.04s
[INFO] running `Command { std: "docker" "inspect" "863bddc3e0520dc0acbd9044de47d62d52e15fd982869c6671564dca5a6bc7aa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "863bddc3e0520dc0acbd9044de47d62d52e15fd982869c6671564dca5a6bc7aa", kill_on_drop: false }`
[INFO] [stdout] 863bddc3e0520dc0acbd9044de47d62d52e15fd982869c6671564dca5a6bc7aa