[INFO] fetching crate nsq-client 0.1.12...
[INFO] documenting nsq-client-0.1.12 against 1.76.0 for beta-1.77-rustdoc-1
[INFO] extracting crate nsq-client 0.1.12 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate nsq-client 0.1.12 on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nsq-client 0.1.12
[INFO] finished tweaking crates.io crate nsq-client 0.1.12
[INFO] tweaked toml for crates.io crate nsq-client 0.1.12 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-signal v0.2.9
[INFO] [stderr]   Downloaded actix_derive v0.3.2
[INFO] [stderr]   Downloaded ipconfig v0.1.9
[INFO] [stderr]   Downloaded backoff v0.1.6
[INFO] [stderr]   Downloaded winreg v0.5.1
[INFO] [stderr]   Downloaded winutil v0.1.1
[INFO] [stderr]   Downloaded trust-dns-resolver v0.10.3
[INFO] [stderr]   Downloaded error-chain v0.8.1
[INFO] [stderr]   Downloaded actix v0.7.9
[INFO] [stderr]   Downloaded trust-dns-proto v0.6.3
[INFO] [stderr]   Downloaded trust-dns-proto v0.5.0
[INFO] [stderr]   Downloaded widestring v0.2.2
[INFO] [stderr]   Downloaded hostname v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 608e4bdbf288f427e7fe8908ac847adbee85e836eb232e398fb349ce992b3d76
[INFO] running `Command { std: "docker" "start" "-a" "608e4bdbf288f427e7fe8908ac847adbee85e836eb232e398fb349ce992b3d76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "608e4bdbf288f427e7fe8908ac847adbee85e836eb232e398fb349ce992b3d76", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "608e4bdbf288f427e7fe8908ac847adbee85e836eb232e398fb349ce992b3d76", kill_on_drop: false }`
[INFO] [stdout] 608e4bdbf288f427e7fe8908ac847adbee85e836eb232e398fb349ce992b3d76
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "RUSTFLAGS=--cap-lints=warn" "-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5704bc11ddd851c5a8bb0c4e4e8bb649a47a77d95b8e43851cd149ce888e4915
[INFO] running `Command { std: "docker" "start" "-a" "5704bc11ddd851c5a8bb0c4e4e8bb649a47a77d95b8e43851cd149ce888e4915", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.153
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]    Compiling autocfg v0.1.8
[INFO] [stderr]     Checking lock_api v0.3.4
[INFO] [stderr]    Compiling proc-macro2 v1.0.78
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking maybe-uninit v2.0.0
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking memchr v2.7.1
[INFO] [stderr]     Checking matches v0.1.10
[INFO] [stderr]     Checking smallvec v0.6.14
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling rand_pcg v0.1.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]     Checking rand_xorshift v0.1.1
[INFO] [stderr]     Checking rand_isaac v0.1.1
[INFO] [stderr]     Checking rand_hc v0.1.0
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]     Checking unicode-bidi v0.3.15
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking percent-encoding v1.0.1
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]     Checking stable_deref_trait v1.2.0
[INFO] [stderr]     Checking match_cfg v0.1.0
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]    Compiling serde v1.0.196
[INFO] [stderr]     Checking scopeguard v0.3.3
[INFO] [stderr]     Checking lru-cache v0.1.2
[INFO] [stderr]    Compiling quote v1.0.35
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[INFO] [stderr]     Checking scoped-tls v0.1.2
[INFO] [stderr]    Compiling parking_lot_core v0.6.3
[INFO] [stderr]    Compiling parking_lot v0.9.0
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
[INFO] [stderr]     Checking idna v0.1.5
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[INFO] [stderr]     Checking crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking tokio-executor v0.1.10
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[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.16.0
[INFO] [stderr]     Checking net2 v0.2.39
[INFO] [stderr]    Compiling cc v1.0.83
[INFO] [stderr]     Checking tokio-timer v0.2.13
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking tokio-current-thread v0.1.7
[INFO] [stderr]     Checking tokio-threadpool v0.1.18
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking mio v0.6.23
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[INFO] [stderr]     Checking tokio-io v0.1.13
[INFO] [stderr]     Checking tokio-codec v0.1.2
[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking tokio-reactor v0.1.12
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]    Compiling backtrace v0.3.69
[INFO] [stderr]     Checking tokio-tcp v0.1.4
[INFO] [stderr]     Checking tokio-udp v0.1.6
[INFO] [stderr]     Checking tokio-uds v0.2.7
[INFO] [stderr]     Checking tokio-signal v0.2.9
[INFO] [stderr]     Checking uuid v0.7.4
[INFO] [stderr]     Checking backoff v0.1.6
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking tokio-core v0.1.18
[INFO] [stderr]    Compiling serde_derive v1.0.196
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking serde_json v1.0.113
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking trust-dns-proto v0.6.3
[INFO] [stderr]     Checking trust-dns-proto v0.5.0
[INFO] [stderr]    Compiling actix_derive v0.3.2
[INFO] [stderr]     Checking trust-dns-resolver v0.10.3
[INFO] [stderr]     Checking actix v0.7.9
[INFO] [stderr]  Documenting nsq-client v0.1.12 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:62:1
[INFO] [stdout]    |
[INFO] [stdout] 62 | #![feature(try_from, associated_type_defaults)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `nsq-client`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/rustup-home/toolchains/1.76.0-x86_64-unknown-linux-gnu/bin/rustdoc --crate-type lib --crate-name nsq_client src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=9487247863513c44 -L dependency=/opt/rustwide/target/debug/deps --extern actix=/opt/rustwide/target/debug/deps/libactix-d36ce904d61e3e29.rmeta --extern backoff=/opt/rustwide/target/debug/deps/libbackoff-c37fe5f8af61eb56.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-4d0457ff00ff859b.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-13343696e8f2818d.rmeta --extern fnv=/opt/rustwide/target/debug/deps/libfnv-3514bddba4744bba.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-45a10f53aca908f9.rmeta --extern hostname=/opt/rustwide/target/debug/deps/libhostname-e50b67e584451bd4.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-c2b9fe8f0bb60ac5.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-08aa3493627b02f1.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-f6c0658181dd854c.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-da66e27a5548ca83.rmeta --extern tokio_codec=/opt/rustwide/target/debug/deps/libtokio_codec-fe53274eeb588191.rmeta --extern tokio_core=/opt/rustwide/target/debug/deps/libtokio_core-a8166d9444a052fa.rmeta --extern tokio_io=/opt/rustwide/target/debug/deps/libtokio_io-a788194223b63f4f.rmeta --extern tokio_tcp=/opt/rustwide/target/debug/deps/libtokio_tcp-7a949e05020f9d4e.rmeta --cap-lints=warn --crate-version 0.1.12` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "5704bc11ddd851c5a8bb0c4e4e8bb649a47a77d95b8e43851cd149ce888e4915", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5704bc11ddd851c5a8bb0c4e4e8bb649a47a77d95b8e43851cd149ce888e4915", kill_on_drop: false }`
[INFO] [stdout] 5704bc11ddd851c5a8bb0c4e4e8bb649a47a77d95b8e43851cd149ce888e4915
