[INFO] cloning repository https://github.com/jiqiang/rustbyexample
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/jiqiang/rustbyexample" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjiqiang%2Frustbyexample", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjiqiang%2Frustbyexample'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 98538804fe40f9c9945fd7f8f27ff8f718c2a973
[INFO] documenting jiqiang/rustbyexample against 1.61.0 for beta-1.62-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjiqiang%2Frustbyexample" "/workspace/builds/worker-15/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-15/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jiqiang/rustbyexample 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 git repo https://github.com/jiqiang/rustbyexample
[INFO] finished tweaking git repo https://github.com/jiqiang/rustbyexample
[INFO] tweaked toml for git repo https://github.com/jiqiang/rustbyexample written to /workspace/builds/worker-15/source/Cargo.toml
[INFO] crate git repo https://github.com/jiqiang/rustbyexample 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 2aa40df0cfb06093490d6d7fd7d0c0c7fe0828845aa652aa3845fdf0c97dc6e1
[INFO] running `Command { std: "docker" "start" "-a" "2aa40df0cfb06093490d6d7fd7d0c0c7fe0828845aa652aa3845fdf0c97dc6e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2aa40df0cfb06093490d6d7fd7d0c0c7fe0828845aa652aa3845fdf0c97dc6e1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2aa40df0cfb06093490d6d7fd7d0c0c7fe0828845aa652aa3845fdf0c97dc6e1", kill_on_drop: false }`
[INFO] [stdout] 2aa40df0cfb06093490d6d7fd7d0c0c7fe0828845aa652aa3845fdf0c97dc6e1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-15/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] 1275fe67e41915e9cabceef688b15d064709377bb7dad195a0cd59aefd198c45
[INFO] running `Command { std: "docker" "start" "-a" "1275fe67e41915e9cabceef688b15d064709377bb7dad195a0cd59aefd198c45", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rustbyexample v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting rustbyexample v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:113:16
[INFO] [stdout]     |
[INFO] [stdout] 113 | type Job = Box<FnBox + Send + 'static>;
[INFO] [stdout]     |                ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 113 - type Job = Box<FnBox + Send + 'static>;
[INFO] [stdout] 113 + type Job = Box<dyn FnBox + Send + 'static>;
[INFO] [stdout]     | 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]  --> src/bin/match.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 |         n @ 1...12 => println!("{} is between 1 and 12", n),
[INFO] [stdout]   |              ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]  --> src/bin/match.rs:9:15
[INFO] [stdout]   |
[INFO] [stdout] 9 |         n @ 13...19 => println!("{} is between 13 and 19", n),
[INFO] [stdout]   |               ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name declare_first src/bin/declare_first.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=d0f5b1756ad9b33a -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name closures_type_anonymity src/bin/closures_type_anonymity.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=3b61339faf15eedb -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name boxes src/bin/boxes.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=c6be2af29f3b9a6a -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name constants src/bin/constants.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=1961d6369a4a4e87 -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name closures_iterator_any src/bin/closures_iterator_any.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=b66bdc8f47c970e8 -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name scope_and_shadowing src/bin/scope_and_shadowing.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=aecc7e5b3cc5b486 -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name match src/bin/match.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=eb207c36270071fd -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name structures src/bin/structures.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=2fcf83b7b38be203 -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name custom_types src/bin/custom_types.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=a3efd0221c1f2a04 -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name variable_bindings src/bin/variable_bindings.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f8f3551ba5feb503 -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name reference src/bin/reference.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=2795c292b7882d07 -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name enum_use src/bin/enum_use.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=badc2652de4d24ef -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name mutability src/bin/mutability.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=0ef5873459657f72 -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name web_server src/bin/web_server.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=479124d4e34b90fd -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name closures src/bin/closures.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=85bc3c3467cfb5cb -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name reference_counting src/bin/reference_counting.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=7c7860f1b37d39c4 -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name type_casting src/bin/type_casting.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=db6218a959f3e24c -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name collections src/bin/collections.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=f077166821a864e5 -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name gui src/bin/gui.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=11eac76897ccd503 -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name fearless_concurrency src/bin/fearless_concurrency.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=3910cd2466cff03b -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name blog src/bin/blog.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=99af07eaeb0d5f1e -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name formatted_print src/bin/formatted_print.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=eb087f6111c990a0 -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] [stderr] error: could not document `rustbyexample`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type bin --crate-name enum src/bin/enum.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=e0c762226f3bc506 -L dependency=/opt/rustwide/target/debug/deps --extern rustbyexample=/opt/rustwide/target/debug/deps/librustbyexample-6dec1c8c7b7615a8.rmeta --cap-lints=warn --crate-version 0.1.0` (signal: 9, SIGKILL: kill)
[INFO] running `Command { std: "docker" "inspect" "1275fe67e41915e9cabceef688b15d064709377bb7dad195a0cd59aefd198c45", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1275fe67e41915e9cabceef688b15d064709377bb7dad195a0cd59aefd198c45", kill_on_drop: false }`
[INFO] [stdout] 1275fe67e41915e9cabceef688b15d064709377bb7dad195a0cd59aefd198c45