[INFO] fetching crate syndicate 0.28.2...
[INFO] documenting syndicate-0.28.2 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate syndicate 0.28.2 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate syndicate 0.28.2 on toolchain 1.69.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate syndicate 0.28.2
[INFO] finished tweaking crates.io crate syndicate 0.28.2
[INFO] tweaked toml for crates.io crate syndicate 0.28.2 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" __CARGO_TEST_CHANNEL_OVERRIDE_DO_NOT_USE_THIS="nightly" "/workspace/cargo-home/bin/cargo" "+1.69.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.69.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded preserves-schema v3.2.1
[INFO] [stderr]   Downloaded preserves v3.0.0
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 91099c7c285f172650c0d306f15dbf89a044b7369ae2988f27fb6f5927639695
[INFO] running `Command { std: "docker" "start" "-a" "91099c7c285f172650c0d306f15dbf89a044b7369ae2988f27fb6f5927639695", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "91099c7c285f172650c0d306f15dbf89a044b7369ae2988f27fb6f5927639695", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "91099c7c285f172650c0d306f15dbf89a044b7369ae2988f27fb6f5927639695", kill_on_drop: false }`
[INFO] [stdout] 91099c7c285f172650c0d306f15dbf89a044b7369ae2988f27fb6f5927639695
[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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+1.69.0" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 19558baa2f46f802851685c309da502d53f57c8a1f49f1047518218e8bf06936
[INFO] running `Command { std: "docker" "start" "-a" "19558baa2f46f802851685c309da502d53f57c8a1f49f1047518218e8bf06936", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.56
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling num-bigint v0.4.3
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling num-rational v0.4.1
[INFO] [stderr]    Compiling num-iter v0.1.43
[INFO] [stderr]    Compiling unicode-segmentation v1.10.1
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]    Compiling typenum v1.16.0
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]     Checking once_cell v1.17.1
[INFO] [stderr]    Compiling thiserror v1.0.40
[INFO] [stderr]    Compiling unicode-width v0.1.10
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling slab v0.4.8
[INFO] [stderr]     Checking tracing-core v0.1.30
[INFO] [stderr]    Compiling futures-task v0.3.28
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling regex-syntax v0.7.1
[INFO] [stderr]    Compiling futures-channel v0.3.28
[INFO] [stderr]     Checking futures-sink v0.3.28
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling base64 v0.13.1
[INFO] [stderr]    Compiling futures-util v0.3.28
[INFO] [stderr]     Checking aho-corasick v1.0.1
[INFO] [stderr]    Compiling dtoa v0.4.8
[INFO] [stderr]    Compiling quote v1.0.26
[INFO] [stderr]    Compiling lock_api v0.4.9
[INFO] [stderr]    Compiling tokio v1.28.0
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]     Checking regex-syntax v0.6.29
[INFO] [stderr]    Compiling parking_lot_core v0.8.6
[INFO] [stderr]    Compiling syn v2.0.15
[INFO] [stderr]    Compiling convert_case v0.4.0
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking smallvec v1.10.0
[INFO] [stderr]     Checking num-complex v0.4.3
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking bytes v1.4.0
[INFO] [stderr]     Checking iana-time-zone v0.1.56
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking chrono v0.4.24
[INFO] [stderr]     Checking digest v0.10.6
[INFO] [stderr]     Checking tracing-log v0.1.3
[INFO] [stderr]     Checking thread_local v1.1.7
[INFO] [stderr]     Checking sharded-slab v0.1.4
[INFO] [stderr]     Checking glob v0.3.1
[INFO] [stderr]     Checking regex v1.8.1
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking blake2 v0.10.6
[INFO] [stderr]     Checking hmac v0.12.1
[INFO] [stderr]     Checking getrandom v0.2.9
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking num v0.4.0
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling pin-project-internal v1.0.12
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]    Compiling thiserror-impl v1.0.40
[INFO] [stderr]    Compiling tracing-attributes v0.1.24
[INFO] [stderr]    Compiling futures-macro v0.3.28
[INFO] [stderr]    Compiling tokio-macros v2.1.0
[INFO] [stderr]     Checking pin-project v1.0.12
[INFO] [stderr]    Compiling structopt v0.3.26
[INFO] [stderr]     Checking tracing v0.1.37
[INFO] [stderr]     Checking tracing-futures v0.2.5
[INFO] [stderr]     Checking serde v1.0.160
[INFO] [stderr]     Checking tokio-util v0.6.10
[INFO] [stderr]     Checking futures-executor v0.3.28
[INFO] [stderr]     Checking futures v0.3.28
[INFO] [stderr]     Checking serde_bytes v0.11.9
[INFO] [stderr]     Checking serde_json v1.0.96
[INFO] [stderr]     Checking tracing-serde v0.1.3
[INFO] [stderr]     Checking preserves v3.0.0
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr]     Checking preserves-schema v3.2.1
[INFO] [stderr]    Compiling syndicate v0.28.2 (/opt/rustwide/workdir)
[INFO] [stderr]  Documenting syndicate v0.28.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:2:1
[INFO] [stdout]   |
[INFO] [stdout] 2 | #![feature(min_specialization)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 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 `syndicate`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name syndicate src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=73fb0545d91a00ed -L dependency=/opt/rustwide/target/debug/deps --extern blake2=/opt/rustwide/target/debug/deps/libblake2-0077a5b5adcc8446.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-cdba088f09c8631e.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-7aaa27b414f249a2.rmeta --extern getrandom=/opt/rustwide/target/debug/deps/libgetrandom-890e7bfb8616a075.rmeta --extern hmac=/opt/rustwide/target/debug/deps/libhmac-c51cf06c86b22628.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-9c7d51f549cf58b7.rmeta --extern parking_lot=/opt/rustwide/target/debug/deps/libparking_lot-cf6b76ce652d933d.rmeta --extern preserves=/opt/rustwide/target/debug/deps/libpreserves-6dd65c5f92bf9a4a.rmeta --extern preserves_schema=/opt/rustwide/target/debug/deps/libpreserves_schema-af5d9ef7879ee7d3.rmeta --extern tokio=/opt/rustwide/target/debug/deps/libtokio-04d7acb6f3996cde.rmeta --extern tokio_util=/opt/rustwide/target/debug/deps/libtokio_util-e4d85a8c01750ca4.rmeta --extern tracing=/opt/rustwide/target/debug/deps/libtracing-cc4587aa643d5680.rmeta --extern tracing_futures=/opt/rustwide/target/debug/deps/libtracing_futures-3b426f9d80d6b39c.rmeta --extern tracing_subscriber=/opt/rustwide/target/debug/deps/libtracing_subscriber-c4e38038895d144f.rmeta --cap-lints=warn --crate-version 0.28.2` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "19558baa2f46f802851685c309da502d53f57c8a1f49f1047518218e8bf06936", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "19558baa2f46f802851685c309da502d53f57c8a1f49f1047518218e8bf06936", kill_on_drop: false }`
[INFO] [stdout] 19558baa2f46f802851685c309da502d53f57c8a1f49f1047518218e8bf06936
