[INFO] cloning repository https://github.com/mtib/huawei-metrics-exporter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mtib/huawei-metrics-exporter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtib%2Fhuawei-metrics-exporter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtib%2Fhuawei-metrics-exporter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d9e210919c919c72a966cc2ee73741af3e7576b5
[INFO] documenting mtib/huawei-metrics-exporter against 1.54.0 for beta-1.55-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmtib%2Fhuawei-metrics-exporter" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mtib/huawei-metrics-exporter on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mtib/huawei-metrics-exporter
[INFO] finished tweaking git repo https://github.com/mtib/huawei-metrics-exporter
[INFO] tweaked toml for git repo https://github.com/mtib/huawei-metrics-exporter written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/mtib/huawei-metrics-exporter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8c7e5c2558c47e3ed001bb845b1f51183dc2e9858a92c9712c5c2f5d87fef476
[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" "8c7e5c2558c47e3ed001bb845b1f51183dc2e9858a92c9712c5c2f5d87fef476", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8c7e5c2558c47e3ed001bb845b1f51183dc2e9858a92c9712c5c2f5d87fef476", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c7e5c2558c47e3ed001bb845b1f51183dc2e9858a92c9712c5c2f5d87fef476", kill_on_drop: false }`
[INFO] [stdout] 8c7e5c2558c47e3ed001bb845b1f51183dc2e9858a92c9712c5c2f5d87fef476
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7b36481891b0ce7732644236d978c0ab2a8d047be33e17de59f2f3ac511459d3
[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" "7b36481891b0ce7732644236d978c0ab2a8d047be33e17de59f2f3ac511459d3", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]     Checking pin-project-lite v0.2.7
[INFO] [stderr]    Compiling openssl-sys v0.9.65
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr]     Checking time v0.1.43
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking tracing v0.1.26
[INFO] [stderr]     Checking http-body v0.4.2
[INFO] [stderr]     Checking cookie v0.12.0
[INFO] [stderr]    Compiling openssl v0.10.35
[INFO] [stderr]    Compiling native-tls v0.2.7
[INFO] [stderr]    Compiling tokio-macros v1.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling time-macros-impl v0.1.2
[INFO] [stderr]    Compiling thiserror-impl v1.0.26
[INFO] [stderr]     Checking tokio v1.8.0
[INFO] [stderr]     Checking time-macros v0.1.1
[INFO] [stderr]     Checking futures-util v0.3.15
[INFO] [stderr]     Checking time v0.2.27
[INFO] [stderr]     Checking thiserror v1.0.26
[INFO] [stderr]     Checking prometheus v0.12.0
[INFO] [stderr]     Checking cookie v0.14.4
[INFO] [stderr]     Checking tokio-util v0.6.7
[INFO] [stderr]     Checking tokio-native-tls v0.3.0
[INFO] [stderr]     Checking serde v1.0.126
[INFO] [stderr]     Checking h2 v0.3.3
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking hyper v0.14.9
[INFO] [stderr]     Checking webdriver v0.43.1
[INFO] [stderr]     Checking hyper-tls v0.5.0
[INFO] [stderr]     Checking fantoccini v0.17.4
[INFO] [stderr]  Documenting huawei-metrics 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:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(async_closure)]
[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 `huawei-metrics`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name huawei_metrics 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 clap=/opt/rustwide/target/debug/deps/libclap-8b68c4630cde21c1.rmeta --extern dotenv=/opt/rustwide/target/debug/deps/libdotenv-fac2af56d99fafd7.rmeta --extern fantoccini=/opt/rustwide/target/debug/deps/libfantoccini-a3463a7f88913185.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-f8abb66ffc16068c.rmeta --extern pretty_env_logger=/opt/rustwide/target/debug/deps/libpretty_env_logger-1a3e6a941d99a643.rmeta --extern prometheus=/opt/rustwide/target/debug/deps/libprometheus-713d9216f7c3f8c5.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-46bf5b535d6b6b09.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-c23f7a072c90bc9e.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-44f8cf4596201973.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-af72b41db4600095.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "7b36481891b0ce7732644236d978c0ab2a8d047be33e17de59f2f3ac511459d3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b36481891b0ce7732644236d978c0ab2a8d047be33e17de59f2f3ac511459d3", kill_on_drop: false }`
[INFO] [stdout] 7b36481891b0ce7732644236d978c0ab2a8d047be33e17de59f2f3ac511459d3
