[INFO] cloning repository https://github.com/jianglibo/play-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jianglibo/play-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjianglibo%2Fplay-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjianglibo%2Fplay-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 22f88bc8e01591254bccda84743424602eff78aa
[INFO] documenting jianglibo/play-rs against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjianglibo%2Fplay-rs" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jianglibo/play-rs on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jianglibo/play-rs
[INFO] finished tweaking git repo https://github.com/jianglibo/play-rs
[INFO] tweaked toml for git repo https://github.com/jianglibo/play-rs written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/jianglibo/play-rs already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 21868e5327f1c831b164e682f1fdc07067a37149dd6b1a12203c0f13d9271fbb
[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" "21868e5327f1c831b164e682f1fdc07067a37149dd6b1a12203c0f13d9271fbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "21868e5327f1c831b164e682f1fdc07067a37149dd6b1a12203c0f13d9271fbb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "21868e5327f1c831b164e682f1fdc07067a37149dd6b1a12203c0f13d9271fbb", kill_on_drop: false }`
[INFO] [stdout] 21868e5327f1c831b164e682f1fdc07067a37149dd6b1a12203c0f13d9271fbb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+394e1b40d264aa6928811919c1124fa248e7d802" "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] 28f4666c88668ec32970244bd66670a39b02bd83824fa75da6549f255173cb71
[INFO] running `Command { std: "docker" "start" "-a" "28f4666c88668ec32970244bd66670a39b02bd83824fa75da6549f255173cb71", kill_on_drop: false }`
[INFO] [stderr]     Checking smallvec v0.6.9
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking memoffset v0.2.1
[INFO] [stderr]    Compiling fnv v1.0.6
[INFO] [stderr]    Compiling ident_case v1.0.0
[INFO] [stderr]    Compiling serde v1.0.88
[INFO] [stderr]     Checking safemem v0.3.0
[INFO] [stderr]     Checking traitobject v0.1.0
[INFO] [stderr]    Compiling derive_builder v0.7.1
[INFO] [stderr]     Checking typeable v0.1.2
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]     Checking remove_dir_all v0.5.1
[INFO] [stderr]    Compiling backtrace v0.3.14
[INFO] [stderr]     Checking tokio-sync v0.1.1
[INFO] [stderr]     Checking log v0.3.9
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]     Checking lock_api v0.1.5
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking inotify-sys v0.1.3
[INFO] [stderr]     Checking filetime v0.2.4
[INFO] [stderr]     Checking tokio-timer v0.2.10
[INFO] [stderr]     Checking crossbeam-epoch v0.7.1
[INFO] [stderr]     Checking base64 v0.9.3
[INFO] [stderr]     Checking aho-corasick v0.6.9
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking walkdir v2.2.7
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking inotify v0.6.1
[INFO] [stderr]     Checking rand_pcg v0.1.1
[INFO] [stderr]     Checking mime v0.2.6
[INFO] [stderr]     Checking unicode-normalization v0.1.8
[INFO] [stderr]     Checking crossbeam-channel v0.3.8
[INFO] [stderr]     Checking tokio-codec v0.1.1
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking crossbeam-deque v0.6.3
[INFO] [stderr]     Checking regex v1.1.0
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling syn v0.15.26
[INFO] [stderr]     Checking mio-uds v0.6.7
[INFO] [stderr]     Checking mio-extras v2.0.5
[INFO] [stderr]     Checking notify v4.0.9
[INFO] [stderr]     Checking parking_lot_core v0.4.0
[INFO] [stderr]     Checking tempfile v3.0.7
[INFO] [stderr]     Checking idna v0.1.5
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking env_logger v0.6.0
[INFO] [stderr]     Checking tokio-reactor v0.1.8
[INFO] [stderr]     Checking crossbeam v0.6.0
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking tokio-threadpool v0.1.11
[INFO] [stderr]     Checking tokio-tcp v0.1.3
[INFO] [stderr]     Checking tokio-uds v0.2.5
[INFO] [stderr]     Checking tokio-udp v0.1.3
[INFO] [stderr]     Checking tokio-fs v0.1.5
[INFO] [stderr]     Checking tokio v0.1.15
[INFO] [stderr]     Checking hyper v0.10.15
[INFO] [stderr]     Checking websocket v0.22.2
[INFO] [stderr]    Compiling darling_core v0.8.5
[INFO] [stderr]    Compiling synstructure v0.10.1
[INFO] [stderr]    Compiling serde_derive v1.0.88
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]     Checking failure v0.1.5
[INFO] [stderr]     Checking which v2.0.1
[INFO] [stderr]    Compiling darling_macro v0.8.5
[INFO] [stderr]    Compiling darling v0.8.5
[INFO] [stderr]    Compiling derive_builder_core v0.4.1
[INFO] [stderr]     Checking serde_json v1.0.38
[INFO] [stderr]     Checking toml v0.4.10
[INFO] [stderr]     Checking headless_chrome v0.1.3
[INFO] [stderr]  Documenting play-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant `IO_ERROR` should have an upper camel case name
[INFO] [stdout]  --> src/tests/test_file.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     IO_ERROR(std::io::Error), //std::io::Error
[INFO] [stdout]   |     ^^^^^^^^ help: convert the identifier to upper camel case: `IoError`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 23s
[INFO] running `Command { std: "docker" "inspect" "28f4666c88668ec32970244bd66670a39b02bd83824fa75da6549f255173cb71", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "28f4666c88668ec32970244bd66670a39b02bd83824fa75da6549f255173cb71", kill_on_drop: false }`
[INFO] [stdout] 28f4666c88668ec32970244bd66670a39b02bd83824fa75da6549f255173cb71