[INFO] fetching crate rafka 0.1.0...
[INFO] documenting rafka-0.1.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate rafka 0.1.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate rafka 0.1.0 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 rafka 0.1.0
[INFO] finished tweaking crates.io crate rafka 0.1.0
[INFO] tweaked toml for crates.io crate rafka 0.1.0 written to /workspace/builds/worker-2/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 }`
[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 tokio-tower v0.4.0
[INFO] [stderr]   Downloaded rafka_codegen v0.0.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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 }`
[INFO] [stdout] a7aa876d1cf685ed2d60fc15511952c2e98f9d0ac4125ddef006794a4cfcf3ea
[INFO] running `Command { std: "docker" "start" "-a" "a7aa876d1cf685ed2d60fc15511952c2e98f9d0ac4125ddef006794a4cfcf3ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7aa876d1cf685ed2d60fc15511952c2e98f9d0ac4125ddef006794a4cfcf3ea", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7aa876d1cf685ed2d60fc15511952c2e98f9d0ac4125ddef006794a4cfcf3ea", kill_on_drop: false }`
[INFO] [stdout] a7aa876d1cf685ed2d60fc15511952c2e98f9d0ac4125ddef006794a4cfcf3ea
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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] 51374914a4e763e7a5306fec90ad3fab1adc71e71813a1502c249e7cb5dea144
[INFO] running `Command { std: "docker" "start" "-a" "51374914a4e763e7a5306fec90ad3fab1adc71e71813a1502c249e7cb5dea144", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.39
[INFO] [stderr]    Compiling unicode-ident v1.0.0
[INFO] [stderr]    Compiling syn v1.0.95
[INFO] [stderr]    Compiling libc v0.2.126
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling pin-project-internal v0.4.29
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking pin-project-lite v0.1.12
[INFO] [stderr]     Checking bytes v0.5.6
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking pin-project-lite v0.2.9
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling cc v1.0.73
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking tower-layer v0.3.1
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking spin v0.5.2
[INFO] [stderr]     Checking once_cell v1.12.0
[INFO] [stderr]     Checking untrusted v0.7.1
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking base64 v0.12.3
[INFO] [stderr]    Compiling anyhow v1.0.57
[INFO] [stderr]     Checking byteorder v1.4.3
[INFO] [stderr]    Compiling crossbeam-utils v0.7.2
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.2
[INFO] [stderr]     Checking tracing-core v0.1.26
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]     Checking net2 v0.2.37
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.4
[INFO] [stderr]     Checking crossbeam-queue v0.2.3
[INFO] [stderr]     Checking mio v0.6.23
[INFO] [stderr]     Checking crossbeam-deque v0.7.4
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking mio-uds v0.6.8
[INFO] [stderr]     Checking sct v0.6.1
[INFO] [stderr]     Checking webpki v0.21.4
[INFO] [stderr]     Checking rustls v0.18.1
[INFO] [stderr]    Compiling tokio-macros v0.2.6
[INFO] [stderr]    Compiling futures-macro v0.3.21
[INFO] [stderr]    Compiling tracing-attributes v0.1.21
[INFO] [stderr]    Compiling rafka_codegen v0.0.0
[INFO] [stderr]     Checking tokio v0.2.25
[INFO] [stderr]     Checking pin-project v0.4.29
[INFO] [stderr]     Checking tower-discover v0.3.0
[INFO] [stderr]     Checking tower-load-shed v0.3.0
[INFO] [stderr]     Checking tracing v0.1.34
[INFO] [stderr]     Checking futures-executor v0.3.21
[INFO] [stderr]     Checking tower-util v0.3.1
[INFO] [stderr]     Checking futures v0.3.21
[INFO] [stderr]     Checking tower-load v0.3.0
[INFO] [stderr]     Checking tower-timeout v0.3.0
[INFO] [stderr]     Checking tower-buffer v0.3.0
[INFO] [stderr]     Checking tower-retry v0.3.0
[INFO] [stderr]     Checking tokio-rustls v0.14.1
[INFO] [stderr]     Checking tokio-util v0.3.1
[INFO] [stderr]     Checking tower-limit v0.3.1
[INFO] [stderr]     Checking tokio-tower v0.4.0
[INFO] [stderr]     Checking tower v0.3.1
[INFO] [stderr]  Documenting rafka v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> src/lib.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(min_const_generics)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove the attribute
[INFO] [stdout]   |
[INFO] [stdout]   = help: the feature `min_const_generics` has been stable since 1.51.0 and no longer requires an attribute to enable
[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 `rafka`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type staticlib --crate-type cdylib --crate-name rafka src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --cfg 'feature="tls"' --cfg 'feature="tokio-rustls"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=c3fe24186317a66e -L dependency=/opt/rustwide/target/debug/deps --extern anyhow=/opt/rustwide/target/debug/deps/libanyhow-a2ad8fa07e0781ab.rmeta --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-7c274f399d426ec2.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-d2f9b88178ca7b9a.rmeta --extern futures=/opt/rustwide/target/debug/deps/libfutures-30f3077da05beb9c.rmeta --extern rafka_codegen=/opt/rustwide/target/debug/deps/librafka_codegen-8867b34c9cb6de21.so --extern tokio=/opt/rustwide/target/debug/deps/libtokio-d8abd9869998abbd.rmeta --extern tokio_rustls=/opt/rustwide/target/debug/deps/libtokio_rustls-0207f0410ea341b7.rmeta --extern tokio_tower=/opt/rustwide/target/debug/deps/libtokio_tower-67469e99b7959d54.rmeta --extern tokio_util=/opt/rustwide/target/debug/deps/libtokio_util-7f0f5a59aa225a5b.rmeta --extern tower=/opt/rustwide/target/debug/deps/libtower-71121dffed66781e.rmeta --cap-lints=warn --crate-version 0.1.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "51374914a4e763e7a5306fec90ad3fab1adc71e71813a1502c249e7cb5dea144", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51374914a4e763e7a5306fec90ad3fab1adc71e71813a1502c249e7cb5dea144", kill_on_drop: false }`
[INFO] [stdout] 51374914a4e763e7a5306fec90ad3fab1adc71e71813a1502c249e7cb5dea144