[INFO] fetching crate nsq-client 0.1.12...
[INFO] documenting nsq-client-0.1.12 against beta-2021-08-01 for beta-1.55-rustdoc-1
[INFO] extracting crate nsq-client 0.1.12 into /workspace/builds/worker-54/source
[INFO] validating manifest of crates.io crate nsq-client 0.1.12 on toolchain beta-2021-08-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "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-54/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-08-01" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
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[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded actix_derive v0.3.2
[INFO] [stderr]   Downloaded tokio-signal v0.2.9
[INFO] [stderr]   Downloaded trust-dns-proto v0.5.0
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[INFO] [stderr]   Downloaded actix v0.7.9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1e4a278b6ad2d166b347353e023690d483015c1bd29626e4e4ae83f7238ae2e9
[INFO] running `Command { std: "docker" "start" "-a" "1e4a278b6ad2d166b347353e023690d483015c1bd29626e4e4ae83f7238ae2e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e4a278b6ad2d166b347353e023690d483015c1bd29626e4e4ae83f7238ae2e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e4a278b6ad2d166b347353e023690d483015c1bd29626e4e4ae83f7238ae2e9", kill_on_drop: false }`
[INFO] [stdout] 1e4a278b6ad2d166b347353e023690d483015c1bd29626e4e4ae83f7238ae2e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-54/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-08-01" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c367c56aaa7c37fdd9244627c3307548c1ad24ed19fad9b28d258e1c6c5e7e11
[INFO] running `Command { std: "docker" "start" "-a" "c367c56aaa7c37fdd9244627c3307548c1ad24ed19fad9b28d258e1c6c5e7e11", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]     Checking futures v0.1.31
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling autocfg v0.1.7
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[INFO] [stderr]     Checking tinyvec_macros v0.1.0
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[INFO] [stderr]     Checking gimli v0.25.0
[INFO] [stderr]     Checking matches v0.1.8
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]     Checking rustc-demangle v0.1.20
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]     Checking percent-encoding v1.0.1
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[INFO] [stderr]     Checking match_cfg v0.1.0
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[INFO] [stderr]    Compiling serde v1.0.127
[INFO] [stderr]     Checking quick-error v1.2.3
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[INFO] [stderr]     Checking tokio-sync v0.1.8
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[INFO] [stderr]     Checking idna v0.1.5
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[INFO] [stderr]     Checking tokio-fs v0.1.7
[INFO] [stderr]     Checking parking_lot v0.7.1
[INFO] [stderr]     Checking tokio v0.1.22
[INFO] [stderr]     Checking url v1.7.2
[INFO] [stderr]     Checking tokio-core v0.1.18
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]     Checking serde_json v1.0.66
[INFO] [stderr]    Compiling serde_derive v1.0.127
[INFO] [stderr]    Compiling actix_derive v0.3.2
[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]     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 beta 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 --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern actix=/opt/rustwide/target/debug/deps/libactix-67e6f35f83a1c899.rmeta --extern backoff=/opt/rustwide/target/debug/deps/libbackoff-16ee3681823d330e.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-bd8a801b2746a03c.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-ae7b021d454340dc.rmeta --extern fnv=/opt/rustwide/target/debug/deps/libfnv-1da472caa9ef57c3.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-ed2fb1b377e34b93.rmeta --extern hostname=/opt/rustwide/target/debug/deps/libhostname-7c2fdd1e00ef3a30.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-be8c314c6d97e413.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-6a5809dcce96c926.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-2799fcdcc706ff71.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-f6976e00c51eb486.rmeta --extern tokio_codec=/opt/rustwide/target/debug/deps/libtokio_codec-d11c138637599ec1.rmeta --extern tokio_core=/opt/rustwide/target/debug/deps/libtokio_core-8fa5c1bfddf9ab7b.rmeta --extern tokio_io=/opt/rustwide/target/debug/deps/libtokio_io-be0dff34823e0770.rmeta --extern tokio_tcp=/opt/rustwide/target/debug/deps/libtokio_tcp-4589fe13b44146e1.rmeta --cap-lints=warn --crate-version 0.1.12` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "c367c56aaa7c37fdd9244627c3307548c1ad24ed19fad9b28d258e1c6c5e7e11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c367c56aaa7c37fdd9244627c3307548c1ad24ed19fad9b28d258e1c6c5e7e11", kill_on_drop: false }`
[INFO] [stdout] c367c56aaa7c37fdd9244627c3307548c1ad24ed19fad9b28d258e1c6c5e7e11
