[INFO] fetching crate nsq-client 0.1.12...
[INFO] documenting nsq-client-0.1.12 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate nsq-client 0.1.12 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate nsq-client 0.1.12 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] 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-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.61.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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 }`
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[INFO] running `Command { std: "docker" "start" "-a" "9e82dbebbf9698fe89b9bf49f1b96d18a49ca2a04988fb0eaef4aee4fbde54c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9e82dbebbf9698fe89b9bf49f1b96d18a49ca2a04988fb0eaef4aee4fbde54c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9e82dbebbf9698fe89b9bf49f1b96d18a49ca2a04988fb0eaef4aee4fbde54c5", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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] 5db84baad58e2f5d86b671ad26aa701675120f69de52d807fe7cf957858f5965
[INFO] running `Command { std: "docker" "start" "-a" "5db84baad58e2f5d86b671ad26aa701675120f69de52d807fe7cf957858f5965", kill_on_drop: false }`
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[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: 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 `nsq-client`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `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=342a2a5b17f6bc89 -L dependency=/opt/rustwide/target/debug/deps --extern actix=/opt/rustwide/target/debug/deps/libactix-cad3cf2bb0da735d.rmeta --extern backoff=/opt/rustwide/target/debug/deps/libbackoff-6ad651abda2d68aa.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-7c274f399d426ec2.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-20bddf4f74ffc010.rmeta --extern fnv=/opt/rustwide/target/debug/deps/libfnv-5eaa67ceb9d9bb54.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-34937b916995a2ad.rmeta --extern hostname=/opt/rustwide/target/debug/deps/libhostname-203eecc0e32c5f42.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-11fcf639aa746c8b.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-495ec9fdc6b7531e.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-cbe02c8b7676a721.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-46fc30c329c07e99.rmeta --extern tokio_codec=/opt/rustwide/target/debug/deps/libtokio_codec-b3ce53f69ac39b30.rmeta --extern tokio_core=/opt/rustwide/target/debug/deps/libtokio_core-c816294fd77d31bd.rmeta --extern tokio_io=/opt/rustwide/target/debug/deps/libtokio_io-8cefbdab5b0b55c3.rmeta --extern tokio_tcp=/opt/rustwide/target/debug/deps/libtokio_tcp-a43b1176ca71f581.rmeta --cap-lints=warn --crate-version 0.1.12` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "5db84baad58e2f5d86b671ad26aa701675120f69de52d807fe7cf957858f5965", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5db84baad58e2f5d86b671ad26aa701675120f69de52d807fe7cf957858f5965", kill_on_drop: false }`
[INFO] [stdout] 5db84baad58e2f5d86b671ad26aa701675120f69de52d807fe7cf957858f5965