[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 1.46.0 for beta-1.47-rustdoc-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fducc%2Frabbitmqtest" "/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/ducc/rabbitmqtest on toolchain 1.46.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.46.0" "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-7/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" "+1.46.0" "fetch" "--locked" "--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-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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 919ba0ba0069d51a2883675bf9f95b645d1df647cbf1d2d814b844100bc56bda
[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" "919ba0ba0069d51a2883675bf9f95b645d1df647cbf1d2d814b844100bc56bda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "919ba0ba0069d51a2883675bf9f95b645d1df647cbf1d2d814b844100bc56bda", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "919ba0ba0069d51a2883675bf9f95b645d1df647cbf1d2d814b844100bc56bda", kill_on_drop: false }`
[INFO] [stdout] 919ba0ba0069d51a2883675bf9f95b645d1df647cbf1d2d814b844100bc56bda
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+1.46.0" "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] aec4389bbf343d3885bca827720b1b5db951b18e234600db6bcd7feeb6c7b744
[INFO] running `Command { std: "docker" "start" "-a" "aec4389bbf343d3885bca827720b1b5db951b18e234600db6bcd7feeb6c7b744", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.73
[INFO] [stderr]    Compiling syn v1.0.35
[INFO] [stderr]    Compiling rand_core v0.4.2
[INFO] [stderr]     Checking once_cell v1.4.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.22
[INFO] [stderr]    Compiling serde v1.0.114
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]    Compiling proc-macro-hack v0.5.16
[INFO] [stderr]    Compiling serde_json v1.0.56
[INFO] [stderr]    Compiling lexical-core v0.7.4
[INFO] [stderr]     Checking arrayvec v0.5.1
[INFO] [stderr]     Checking static_assertions v1.1.0
[INFO] [stderr]     Checking smallvec v1.4.1
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking cookie-factory v0.3.1
[INFO] [stderr]    Compiling amq-protocol v6.0.0-rc12
[INFO] [stderr]    Compiling lapin v1.2.1
[INFO] [stderr]    Compiling prometheus v0.8.0
[INFO] [stderr]     Checking utf-8 v0.7.5
[INFO] [stderr]     Checking async-task v3.0.0
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[INFO] [stderr]    Compiling phf_generator v0.7.24
[INFO] [stderr]    Compiling phf_codegen v0.7.24
[INFO] [stderr]    Compiling mime_guess v1.8.8
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[INFO] [stderr]    Compiling serde_derive v1.0.114
[INFO] [stderr]    Compiling futures-macro v0.3.5
[INFO] [stderr]    Compiling tokio-macros v0.2.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.9
[INFO] [stderr]    Compiling thiserror-impl v1.0.20
[INFO] [stderr]     Checking tokio v0.2.21
[INFO] [stderr]     Checking thiserror v1.0.20
[INFO] [stderr]     Checking tracing v0.1.17
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[INFO] [stderr]     Checking pin-project v0.4.22
[INFO] [stderr]     Checking futures-util v0.3.5
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking futures-executor v0.3.5
[INFO] [stderr]     Checking h2 v0.2.6
[INFO] [stderr]     Checking futures v0.3.5
[INFO] [stderr]     Checking tokio-tungstenite v0.10.1
[INFO] [stderr]     Checking serde_urlencoded v0.6.1
[INFO] [stderr]     Checking tracing-serde v0.1.1
[INFO] [stderr]     Checking amq-protocol-types v6.0.0-rc12
[INFO] [stderr]     Checking tracing-subscriber v0.2.8
[INFO] [stderr]     Checking hyper v0.13.7
[INFO] [stderr]     Checking tokio-amqp v0.1.3
[INFO] [stderr]     Checking warp v0.2.4
[INFO] [stderr]  Documenting rabbitmqtest 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 `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-1de9e51fa88716a7.rmeta --extern futures_executor=/opt/rustwide/target/debug/deps/libfutures_executor-dca7de7c8a89581e.rmeta --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-6717b7d558e05316.rmeta --extern lapin=/opt/rustwide/target/debug/deps/liblapin-4e637531e5fa10c5.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-57a7edc7f441d44c.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-958bf2a074a4960f.rmeta --extern prometheus=/opt/rustwide/target/debug/deps/libprometheus-cb687d25ca5b34e1.rmeta --extern prometheus_exporter=/opt/rustwide/target/debug/deps/libprometheus_exporter-0c29bc6caa037652.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-9f7472e4a0c02057.rmeta --extern tokio_amqp=/opt/rustwide/target/debug/deps/libtokio_amqp-5017eabdabbcabfc.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-5c5bc9a757bd225e.rmeta --extern tracing_futures=/opt/rustwide/target/debug/deps/libtracing_futures-e9bf45b46a28703e.rmeta --extern tracing_subscriber=/opt/rustwide/target/debug/deps/libtracing_subscriber-48cb17513d2e2fb3.rmeta --extern warp=/opt/rustwide/target/debug/deps/libwarp-37eb873c47c12cad.rmeta --cap-lints=warn` (exit code: 1)
[INFO] running `Command { std: "docker" "inspect" "aec4389bbf343d3885bca827720b1b5db951b18e234600db6bcd7feeb6c7b744", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "aec4389bbf343d3885bca827720b1b5db951b18e234600db6bcd7feeb6c7b744", kill_on_drop: false }`
[INFO] [stdout] aec4389bbf343d3885bca827720b1b5db951b18e234600db6bcd7feeb6c7b744