[INFO] fetching crate fabruic 0.0.1-dev.2...
[INFO] documenting fabruic-0.0.1-dev.2 against 1.54.0 for beta-1.55-rustdoc-1
[INFO] extracting crate fabruic 0.0.1-dev.2 into /workspace/builds/worker-44/source
[INFO] validating manifest of crates.io crate fabruic 0.0.1-dev.2 on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate fabruic 0.0.1-dev.2
[INFO] finished tweaking crates.io crate fabruic 0.0.1-dev.2
[INFO] tweaked toml for crates.io crate fabruic 0.0.1-dev.2 written to /workspace/builds/worker-44/source/Cargo.toml
[INFO] crate crates.io crate fabruic 0.0.1-dev.2 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded funty v1.1.0
[INFO] [stderr]   Downloaded futures-channel v0.3.14
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[INFO] [stderr]   Downloaded allochronic-util v0.0.1-dev-1
[INFO] [stderr]   Downloaded anyhow v1.0.40
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[INFO] [stderr]   Downloaded tokio-macros v1.1.0
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 884b95d34414639a8eafba1443869c524a18b420707acd02b374cac4947b0ca6
[INFO] running `Command { std: "docker" "start" "-a" "884b95d34414639a8eafba1443869c524a18b420707acd02b374cac4947b0ca6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "884b95d34414639a8eafba1443869c524a18b420707acd02b374cac4947b0ca6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "884b95d34414639a8eafba1443869c524a18b420707acd02b374cac4947b0ca6", kill_on_drop: false }`
[INFO] [stdout] 884b95d34414639a8eafba1443869c524a18b420707acd02b374cac4947b0ca6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-44/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" "+1.54.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 27209e291a01453aa9b77adb0232daf7a6c340675bd0ef9683af5b8df4bb90d9
[INFO] running `Command { std: "docker" "start" "-a" "27209e291a01453aa9b77adb0232daf7a6c340675bd0ef9683af5b8df4bb90d9", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling proc-macro2 v1.0.26
[INFO] [stderr]    Compiling syn v1.0.69
[INFO] [stderr]    Compiling libc v0.2.93
[INFO] [stderr]    Compiling cc v1.0.67
[INFO] [stderr]    Compiling radium v0.5.3
[INFO] [stderr]     Checking once_cell v1.7.2
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]    Compiling lexical-core v0.7.5
[INFO] [stderr]    Compiling getrandom v0.2.2
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]    Compiling serde_derive v1.0.125
[INFO] [stderr]    Compiling serde v1.0.125
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]     Checking futures-core v0.3.14
[INFO] [stderr]     Checking futures-sink v0.3.14
[INFO] [stderr]    Compiling static_assertions v1.1.0
[INFO] [stderr]     Checking funty v1.1.0
[INFO] [stderr]    Compiling arrayvec v0.5.2
[INFO] [stderr]    Compiling tap v1.0.1
[INFO] [stderr]    Compiling wyz v0.2.0
[INFO] [stderr]     Checking futures-io v0.3.14
[INFO] [stderr]     Checking futures-task v0.3.14
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling rustversion v1.0.4
[INFO] [stderr]    Compiling trybuild v1.0.42
[INFO] [stderr]    Compiling oid-registry v0.1.1
[INFO] [stderr]     Checking openssl-probe v0.1.2
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]     Checking data-encoding v2.3.2
[INFO] [stderr]     Checking if_chain v1.0.1
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling num-integer v0.1.44
[INFO] [stderr]    Compiling nom v6.1.2
[INFO] [stderr]    Compiling num-bigint v0.4.0
[INFO] [stderr]     Checking tracing-core v0.1.17
[INFO] [stderr]    Compiling tokio v1.5.0
[INFO] [stderr]     Checking instant v0.1.9
[INFO] [stderr]     Checking form_urlencoded v1.0.1
[INFO] [stderr]     Checking memchr v2.3.4
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]     Checking unicode-normalization v0.1.17
[INFO] [stderr]     Checking lock_api v0.4.3
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking spinning_top v0.2.3
[INFO] [stderr]     Checking idna v0.2.2
[INFO] [stderr]     Checking futures-channel v0.3.14
[INFO] [stderr]     Checking url v2.2.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking mio v0.7.11
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking socket2 v0.3.19
[INFO] [stderr]    Compiling bitvec v0.19.5
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking nanorand v0.5.2
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking yasna v0.3.2
[INFO] [stderr]     Checking rusticata-macros v3.0.1
[INFO] [stderr]     Checking sct v0.6.1
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking rcgen v0.8.10
[INFO] [stderr]     Checking ct-logs v0.8.0
[INFO] [stderr]     Checking rustls v0.19.0
[INFO] [stderr]     Checking webpki-roots v0.21.1
[INFO] [stderr]    Compiling synstructure v0.12.4
[INFO] [stderr]     Checking rustls-native-certs v0.5.0
[INFO] [stderr]    Compiling futures-macro v0.3.14
[INFO] [stderr]    Compiling thiserror-impl v1.0.24
[INFO] [stderr]    Compiling pin-project-internal v1.0.6
[INFO] [stderr]    Compiling tracing-attributes v0.1.15
[INFO] [stderr]    Compiling der-oid-macro v0.4.0
[INFO] [stderr]    Compiling tokio-macros v1.1.0
[INFO] [stderr]    Compiling allochronic-util-macros v0.0.1-dev-1
[INFO] [stderr]    Compiling zeroize_derive v1.0.1
[INFO] [stderr]     Checking der-parser v5.1.0
[INFO] [stderr]     Checking zeroize v1.2.0
[INFO] [stderr]     Checking thiserror v1.0.24
[INFO] [stderr]     Checking futures-util v0.3.14
[INFO] [stderr]     Checking x509-parser v0.9.2
[INFO] [stderr]     Checking tracing v0.1.25
[INFO] [stderr]     Checking pin-project v1.0.6
[INFO] [stderr]     Checking flume v0.10.4
[INFO] [stderr]     Checking quinn-proto v0.7.2
[INFO] [stderr]     Checking futures-executor v0.3.14
[INFO] [stderr]     Checking futures v0.3.14
[INFO] [stderr]     Checking quinn v0.7.2
[INFO] [stderr]     Checking toml v0.5.8
[INFO] [stderr]     Checking serde_json v1.0.64
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking allochronic-util v0.0.1-dev-1
[INFO] [stderr]  Documenting fabruic v0.0.1-dev.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:50:2
[INFO] [stdout]    |
[INFO] [stdout] 50 |     feature(doc_cfg),
[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 `fabruic`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name fabruic src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi --document-private-items -L dependency=/opt/rustwide/target/debug/deps --extern allochronic_util=/opt/rustwide/target/debug/deps/liballochronic_util-80f80153976661d7.rmeta --extern bincode=/opt/rustwide/target/debug/deps/libbincode-af52cce8b67c8c2a.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-7b9084f8ae89ce82.rmeta --extern flume=/opt/rustwide/target/debug/deps/libflume-9c61353d1bfc1e91.rmeta --extern futures_channel=/opt/rustwide/target/debug/deps/libfutures_channel-464ebdc318d4b40b.rmeta --extern futures_executor=/opt/rustwide/target/debug/deps/libfutures_executor-adee2a382297f642.rmeta --extern futures_util=/opt/rustwide/target/debug/deps/libfutures_util-dc0d003c73e05835.rmeta --extern if_chain=/opt/rustwide/target/debug/deps/libif_chain-0228792e4871914c.rmeta --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-7c63c8cb827323d5.rmeta --extern pin_project=/opt/rustwide/target/debug/deps/libpin_project-2c7167f63b5f21c9.rmeta --extern quinn=/opt/rustwide/target/debug/deps/libquinn-51b8b60adb287d17.rmeta --extern rcgen=/opt/rustwide/target/debug/deps/librcgen-74130ba0ab31d2b3.rmeta --extern ring=/opt/rustwide/target/debug/deps/libring-53a2a8728b6c792e.rmeta --extern rustls=/opt/rustwide/target/debug/deps/librustls-70267fb0e6793881.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-428bac75d165e4fa.rmeta --extern thiserror=/opt/rustwide/target/debug/deps/libthiserror-ba338b5466e747ad.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-7b648907b668f8cb.rmeta --extern url=/opt/rustwide/target/debug/deps/liburl-223ae8540946c356.rmeta --extern webpki=/opt/rustwide/target/debug/deps/libwebpki-22cce06aa1af82be.rmeta --extern webpki_roots=/opt/rustwide/target/debug/deps/libwebpki_roots-513abebd549175ba.rmeta --extern x509_parser=/opt/rustwide/target/debug/deps/libx509_parser-ad7bacafacf5c695.rmeta --extern zeroize=/opt/rustwide/target/debug/deps/libzeroize-66d5bfc72d928206.rmeta --cap-lints=warn --crate-version 0.0.1-dev.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "27209e291a01453aa9b77adb0232daf7a6c340675bd0ef9683af5b8df4bb90d9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "27209e291a01453aa9b77adb0232daf7a6c340675bd0ef9683af5b8df4bb90d9", kill_on_drop: false }`
[INFO] [stdout] 27209e291a01453aa9b77adb0232daf7a6c340675bd0ef9683af5b8df4bb90d9
