[INFO] cloning repository https://github.com/mikekap/wink-mqtt-rs
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mikekap/wink-mqtt-rs" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikekap%2Fwink-mqtt-rs", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmikekap%2Fwink-mqtt-rs'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9f4446cf77dfc8bc015a9c5c20c8a32c903885e1
[INFO] documenting mikekap/wink-mqtt-rs 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%2Fmikekap%2Fwink-mqtt-rs" "/workspace/builds/worker-39/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-39/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mikekap/wink-mqtt-rs 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] removed /workspace/builds/worker-39/source/.cargo/config
[INFO] started tweaking git repo https://github.com/mikekap/wink-mqtt-rs
[INFO] finished tweaking git repo https://github.com/mikekap/wink-mqtt-rs
[INFO] tweaked toml for git repo https://github.com/mikekap/wink-mqtt-rs written to /workspace/builds/worker-39/source/Cargo.toml
[INFO] crate git repo https://github.com/mikekap/wink-mqtt-rs 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] warning: the cargo feature `strip` has been stabilized in the 1.58 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/profiles.html#strip-option for more information about using this feature.
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rumqttc v0.2.0
[INFO] [stderr]   Downloaded mqtt4bytes v0.3.0
[INFO] [stderr]   Downloaded pollster v0.2.0
[INFO] [stderr]   Downloaded slog-stdlog v4.1.0
[INFO] [stderr]   Downloaded rust-embed-impl v5.7.0
[INFO] [stderr]   Downloaded rust-embed v5.7.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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] eb9f62473418eefbc27575d6369c717cc6ed550cc3d2abce41dbd2e24c7d3396
[INFO] running `Command { std: "docker" "start" "-a" "eb9f62473418eefbc27575d6369c717cc6ed550cc3d2abce41dbd2e24c7d3396", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "eb9f62473418eefbc27575d6369c717cc6ed550cc3d2abce41dbd2e24c7d3396", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eb9f62473418eefbc27575d6369c717cc6ed550cc3d2abce41dbd2e24c7d3396", kill_on_drop: false }`
[INFO] [stdout] eb9f62473418eefbc27575d6369c717cc6ed550cc3d2abce41dbd2e24c7d3396
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-39/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] f3c3d93405974ea248c1e206d4599fd08b0b379f5083ed36be4d25e907ffebea
[INFO] running `Command { std: "docker" "start" "-a" "f3c3d93405974ea248c1e206d4599fd08b0b379f5083ed36be4d25e907ffebea", kill_on_drop: false }`
[INFO] [stderr] warning: the cargo feature `strip` has been stabilized in the 1.58 release and is no longer necessary to be listed in the manifest
[INFO] [stderr]   See https://doc.rust-lang.org/cargo/reference/profiles.html#strip-option for more information about using this feature.
[INFO] [stderr]    Compiling syn v1.0.54
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking futures-core v0.3.13
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]    Compiling crc32fast v1.2.1
[INFO] [stderr]    Compiling cc v1.0.66
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[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking pin-project-lite v0.2.6
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[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking once_cell v1.5.2
[INFO] [stderr]    Compiling pin-project-internal v0.4.27
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking pin-project-lite v0.1.11
[INFO] [stderr]     Checking futures-task v0.3.13
[INFO] [stderr]    Compiling adler32 v1.2.0
[INFO] [stderr]    Compiling rle-decode-fast v1.0.1
[INFO] [stderr]     Checking futures-io v0.3.13
[INFO] [stderr]     Checking itoa v0.4.6
[INFO] [stderr]    Compiling slog v2.7.0
[INFO] [stderr]    Compiling take_mut v0.2.2
[INFO] [stderr]    Compiling same-file v1.0.6
[INFO] [stderr]    Compiling serde_derive v1.0.118
[INFO] [stderr]     Checking hashbrown v0.9.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling unicode-segmentation v1.7.1
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[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]     Checking cache-padded v1.1.1
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling httparse v1.3.4
[INFO] [stderr]    Compiling serde_json v1.0.60
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[INFO] [stderr]    Compiling indexmap v1.6.0
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[INFO] [stderr]     Checking tinyvec v1.1.0
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]     Checking walkdir v2.3.1
[INFO] [stderr]     Checking form_urlencoded v1.0.0
[INFO] [stderr]    Compiling quote v1.0.7
[INFO] [stderr]     Checking futures-channel v0.3.13
[INFO] [stderr]     Checking concurrent-queue v1.2.2
[INFO] [stderr]     Checking textwrap v0.12.1
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[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]     Checking http v0.2.1
[INFO] [stderr]     Checking mqtt4bytes v0.3.0
[INFO] [stderr]     Checking async-channel v1.5.1
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[INFO] [stderr]    Compiling heck v0.3.1
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[INFO] [stderr]     Checking slog-term v2.6.0
[INFO] [stderr]     Checking url v2.2.0
[INFO] [stderr]    Compiling include-flate-codegen v0.1.3
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[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling futures-macro v0.3.13
[INFO] [stderr]    Compiling thiserror-impl v1.0.22
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling rust-embed-impl v5.7.0
[INFO] [stderr]    Compiling clap_derive v3.0.0-beta.2
[INFO] [stderr]    Compiling async-trait v0.1.42
[INFO] [stderr]     Checking rustls v0.18.1
[INFO] [stderr]     Checking include-flate-codegen-exports v0.1.3
[INFO] [stderr]     Checking include-flate v0.1.3
[INFO] [stderr]     Checking rust-embed v5.7.0
[INFO] [stderr]     Checking tokio v0.2.24
[INFO] [stderr]     Checking futures-util v0.3.13
[INFO] [stderr]     Checking pin-project v1.0.2
[INFO] [stderr]     Checking thiserror v1.0.22
[INFO] [stderr]     Checking pin-project v0.4.27
[INFO] [stderr]     Checking clap v3.0.0-beta.2
[INFO] [stderr]     Checking tracing-futures v0.2.4
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tokio-rustls v0.14.1
[INFO] [stderr]     Checking rumqttc v0.2.0
[INFO] [stderr]     Checking futures-executor v0.3.13
[INFO] [stderr]     Checking h2 v0.2.7
[INFO] [stderr]     Checking futures v0.3.13
[INFO] [stderr]     Checking hyper v0.13.9
[INFO] [stderr]  Documenting wink-mqtt-rs v0.2.3-prerelease (/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 `wink-mqtt-rs`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type bin --crate-name wink_mqtt_rs src/main.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=947d3112d3d7ed20 -L dependency=/opt/rustwide/target/debug/deps --extern async_channel=/opt/rustwide/target/debug/deps/libasync_channel-612c163a5a569c9b.rmeta --extern async_trait=/opt/rustwide/target/debug/deps/libasync_trait-07bc8462770b415f.so --extern clap=/opt/rustwide/target/debug/deps/libclap-92505aa3fb3d9458.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-3147248dfba10954.rmeta --extern hyper=/opt/rustwide/target/debug/deps/libhyper-d3ec50ddc63ac3ce.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-1479f2b7adeaa2b6.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-2be53ef7d3962f41.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-7f7c07494e82902c.rmeta --extern rumqttc=/opt/rustwide/target/debug/deps/librumqttc-d8cc86cef8dde0a6.rmeta --extern rust_embed=/opt/rustwide/target/debug/deps/librust_embed-1fdf891afbb19f79.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-822741040a849b56.rmeta --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-355321cd76e33511.rmeta --extern simple_error=/opt/rustwide/target/debug/deps/libsimple_error-72a954289cf12ba2.rmeta --extern slog=/opt/rustwide/target/debug/deps/libslog-54653a4417f6e533.rmeta --extern slog_scope=/opt/rustwide/target/debug/deps/libslog_scope-d6eea6db8c30d337.rmeta --extern slog_stdlog=/opt/rustwide/target/debug/deps/libslog_stdlog-ef310d5a87a4d509.rmeta --extern slog_term=/opt/rustwide/target/debug/deps/libslog_term-f859f56dffed208a.rmeta --extern subprocess=/opt/rustwide/target/debug/deps/libsubprocess-d8edb4950abed478.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-c5247b07f049db9c.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-9c306add38ae221f.rmeta --cap-lints=warn --crate-version 0.2.3-prerelease` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "f3c3d93405974ea248c1e206d4599fd08b0b379f5083ed36be4d25e907ffebea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f3c3d93405974ea248c1e206d4599fd08b0b379f5083ed36be4d25e907ffebea", kill_on_drop: false }`
[INFO] [stdout] f3c3d93405974ea248c1e206d4599fd08b0b379f5083ed36be4d25e907ffebea