[INFO] cloning repository https://github.com/ducc/rabbitmqtest
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ducc/rabbitmqtest" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fducc%2Frabbitmqtest", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fducc%2Frabbitmqtest'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3acfc1ec80d708187d69fb3af5b9f7c4fd5cc864
[INFO] documenting ducc/rabbitmqtest against beta-2020-10-09 for beta-1.48-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fducc%2Frabbitmqtest" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ducc/rabbitmqtest on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ducc/rabbitmqtest
[INFO] finished tweaking git repo https://github.com/ducc/rabbitmqtest
[INFO] tweaked toml for git repo https://github.com/ducc/rabbitmqtest written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/ducc/rabbitmqtest already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 285b2b310610f1d8ee5b90adb1969ec051436d9498df4e3dcbdf80619bf4dacc
[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" "285b2b310610f1d8ee5b90adb1969ec051436d9498df4e3dcbdf80619bf4dacc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "285b2b310610f1d8ee5b90adb1969ec051436d9498df4e3dcbdf80619bf4dacc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "285b2b310610f1d8ee5b90adb1969ec051436d9498df4e3dcbdf80619bf4dacc", kill_on_drop: false }`
[INFO] [stdout] 285b2b310610f1d8ee5b90adb1969ec051436d9498df4e3dcbdf80619bf4dacc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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-2020-10-09" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5e9918144248cb3a4d8a80073e4aeb46711a686d09fa403d86d7d4f5da33bf52
[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" "5e9918144248cb3a4d8a80073e4aeb46711a686d09fa403d86d7d4f5da33bf52", kill_on_drop: false }`
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[INFO] [stderr]     Checking tokio-amqp v0.1.3
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[INFO] [stderr]  Documenting rabbitmqtest v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta 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 `rabbitmqtest`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name rabbitmqtest 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 env_logger=/opt/rustwide/target/debug/deps/libenv_logger-993e51fe2c46586f.rmeta --extern futures_executor=/opt/rustwide/target/debug/deps/libfutures_executor-c6efea1fe2bf3bae.rmeta --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-5ee66f8c828f2dd8.rmeta --extern lapin=/opt/rustwide/target/debug/deps/liblapin-8a2b36044a5f514c.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-db88f49d9e5662e7.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-95a9d57e67df36ac.rmeta --extern prometheus=/opt/rustwide/target/debug/deps/libprometheus-4b1df9b2b0633b99.rmeta --extern prometheus_exporter=/opt/rustwide/target/debug/deps/libprometheus_exporter-a32d9ac21dd44fa5.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-49d61c1ce1e5597b.rmeta --extern tokio_amqp=/opt/rustwide/target/debug/deps/libtokio_amqp-0c55fca21f6b8ce2.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-01e5c3b0c7546ba6.rmeta --extern tracing_futures=/opt/rustwide/target/debug/deps/libtracing_futures-d9cd1995ef3efa21.rmeta --extern tracing_subscriber=/opt/rustwide/target/debug/deps/libtracing_subscriber-58b90accb44e1282.rmeta --extern warp=/opt/rustwide/target/debug/deps/libwarp-3d842780578bfb97.rmeta --cap-lints=warn --crate-version 0.1.0` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "5e9918144248cb3a4d8a80073e4aeb46711a686d09fa403d86d7d4f5da33bf52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5e9918144248cb3a4d8a80073e4aeb46711a686d09fa403d86d7d4f5da33bf52", kill_on_drop: false }`
[INFO] [stdout] 5e9918144248cb3a4d8a80073e4aeb46711a686d09fa403d86d7d4f5da33bf52
