[INFO] cloning repository https://github.com/LU15W1R7H/crawler
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LU15W1R7H/crawler" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLU15W1R7H%2Fcrawler", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLU15W1R7H%2Fcrawler'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 91e7998761a961579c975769fe7aeb15d6717ac1
[INFO] documenting LU15W1R7H/crawler against 1.47.0 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLU15W1R7H%2Fcrawler" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/LU15W1R7H/crawler on toolchain 1.47.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/LU15W1R7H/crawler
[INFO] finished tweaking git repo https://github.com/LU15W1R7H/crawler
[INFO] tweaked toml for git repo https://github.com/LU15W1R7H/crawler written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/LU15W1R7H/crawler already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.47.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+1.47.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 434b97d76bc02133cf832b3add5f0a2508d26042244ee5c9fa3c1d7936650305
[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" "434b97d76bc02133cf832b3add5f0a2508d26042244ee5c9fa3c1d7936650305", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "434b97d76bc02133cf832b3add5f0a2508d26042244ee5c9fa3c1d7936650305", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "434b97d76bc02133cf832b3add5f0a2508d26042244ee5c9fa3c1d7936650305", kill_on_drop: false }`
[INFO] [stdout] 434b97d76bc02133cf832b3add5f0a2508d26042244ee5c9fa3c1d7936650305
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+1.47.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 007dd9ef97d42f71d0697b1a1cc8c0117271969e32ceb097bc00b6c88a3c4c6f
[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" "007dd9ef97d42f71d0697b1a1cc8c0117271969e32ceb097bc00b6c88a3c4c6f", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.29
[INFO] [stderr]    Compiling itoa v0.4.5
[INFO] [stderr]    Compiling eyre v0.4.2
[INFO] [stderr]     Checking indenter v0.3.0
[INFO] [stderr]    Compiling crawler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking lwirth-rs v0.1.0 (https://github.com/LU15W1R7H/lwirth-rs#1f6c2642)
[INFO] [stderr]    Compiling ryu v1.0.4
[INFO] [stderr]    Compiling serde v1.0.111
[INFO] [stderr]     Checking tracing-log v0.1.1
[INFO] [stderr]     Checking regex-automata v0.1.9
[INFO] [stderr]     Checking tracing-serde v0.1.1
[INFO] [stderr]     Checking serde_json v1.0.53
[INFO] [stderr]     Checking string_cache v0.8.0
[INFO] [stderr]    Compiling rand_core v0.5.1
[INFO] [stderr]     Checking color-backtrace v0.4.2
[INFO] [stderr]     Checking console v0.11.3
[INFO] [stderr]     Checking rand_pcg v0.2.1
[INFO] [stderr]     Checking native-tls v0.2.4
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]    Compiling rand_chacha v0.2.2
[INFO] [stderr]     Checking indicatif v0.14.0
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking tracing-subscriber v0.2.5
[INFO] [stderr]    Compiling phf_generator v0.8.0
[INFO] [stderr]    Compiling phf_codegen v0.8.0
[INFO] [stderr]    Compiling string_cache_codegen v0.5.1
[INFO] [stderr]    Compiling pin-project-internal v0.4.17
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.8
[INFO] [stderr]    Compiling serde_derive v1.0.111
[INFO] [stderr]    Compiling html5ever v0.25.1
[INFO] [stderr]    Compiling thiserror-impl v1.0.19
[INFO] [stderr]     Checking tokio v0.2.21
[INFO] [stderr]     Checking thiserror v1.0.19
[INFO] [stderr]     Checking pin-project v0.4.17
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking tracing v0.1.14
[INFO] [stderr]     Checking tracing-error v0.1.2
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking color-spantrace v0.1.1
[INFO] [stderr]     Checking color-eyre v0.3.2
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-tls v0.3.1
[INFO] [stderr]    Compiling markup5ever v0.10.0
[INFO] [stderr]     Checking h2 v0.2.5
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking hyper v0.13.6
[INFO] [stderr]     Checking hyper-tls v0.4.1
[INFO] [stderr]     Checking reqwest v0.10.6
[INFO] [stderr]  Documenting crawler v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/main.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | #![feature(drain_filter)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: Compilation failed, aborting rustdoc
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: Could not document `crawler`.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name crawler src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern atty=/opt/rustwide/target/debug/deps/libatty-876d06097c23b0b6.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-c7089d2aa8cbefaa.rmeta --extern chrono=/opt/rustwide/target/debug/deps/libchrono-5fe0020f823aa958.rmeta --extern clap=/opt/rustwide/target/debug/deps/libclap-198be6fd34033396.rmeta --extern color_eyre=/opt/rustwide/target/debug/deps/libcolor_eyre-ea2222341e7c6a51.rmeta --extern console=/opt/rustwide/target/debug/deps/libconsole-bede2c36e491c55e.rmeta --extern eyre=/opt/rustwide/target/debug/deps/libeyre-aa70426d01c88d51.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-eaf5d5ec5fbd0b72.rmeta --extern html5ever=/opt/rustwide/target/debug/deps/libhtml5ever-f2fe80fd6e63736b.rmeta --extern indicatif=/opt/rustwide/target/debug/deps/libindicatif-0574dc89c2b13f99.rmeta --extern lwirth_rs=/opt/rustwide/target/debug/deps/liblwirth_rs-9767dae4fb39e8a2.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-563ce77644297078.rmeta --extern reqwest=/opt/rustwide/target/debug/deps/libreqwest-77cfbf920edecc3d.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-137a07148542f859.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-8459c00fa86d127d.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-db5aebd1d2a1dd79.rmeta --extern tracing_error=/opt/rustwide/target/debug/deps/libtracing_error-ba517956105a1d6f.rmeta --extern tracing_futures=/opt/rustwide/target/debug/deps/libtracing_futures-5772151eeba519dc.rmeta --extern tracing_subscriber=/opt/rustwide/target/debug/deps/libtracing_subscriber-0f7479f49a6c86e2.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-810e4ec5dd58d4ee.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "007dd9ef97d42f71d0697b1a1cc8c0117271969e32ceb097bc00b6c88a3c4c6f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "007dd9ef97d42f71d0697b1a1cc8c0117271969e32ceb097bc00b6c88a3c4c6f", kill_on_drop: false }`
[INFO] [stdout] 007dd9ef97d42f71d0697b1a1cc8c0117271969e32ceb097bc00b6c88a3c4c6f
