[INFO] fetching crate fwd_ad 0.2.0...
[INFO] documenting fwd_ad-0.2.0 against 1.61.0 for beta-1.62-rustdoc-1
[INFO] extracting crate fwd_ad 0.2.0 into /workspace/builds/worker-109/source
[INFO] validating manifest of crates.io crate fwd_ad 0.2.0 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 fwd_ad 0.2.0
[INFO] finished tweaking crates.io crate fwd_ad 0.2.0
[INFO] tweaked toml for crates.io crate fwd_ad 0.2.0 written to /workspace/builds/worker-109/source/Cargo.toml
[INFO] crate crates.io crate fwd_ad 0.2.0 already has a lockfile, it will not be regenerated
[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 autocfg v1.0.0
[INFO] [stderr]   Downloaded criterion v0.3.2
[INFO] [stderr]   Downloaded same-file v1.0.6
[INFO] [stderr]   Downloaded num-traits v0.2.11
[INFO] [stderr]   Downloaded walkdir v2.3.1
[INFO] [stderr]   Downloaded serde_json v1.0.53
[INFO] [stderr]   Downloaded quote v1.0.6
[INFO] [stderr]   Downloaded serde_derive v1.0.110
[INFO] [stderr]   Downloaded ryu v1.0.4
[INFO] [stderr]   Downloaded proc-macro2 v1.0.13
[INFO] [stderr]   Downloaded serde v1.0.110
[INFO] [stderr]   Downloaded syn v1.0.22
[INFO] [stderr]   Downloaded regex v1.3.7
[INFO] [stderr]   Downloaded wasm-bindgen-backend v0.2.62
[INFO] [stderr]   Downloaded bumpalo v3.3.0
[INFO] [stderr]   Downloaded oorandom v11.1.1
[INFO] [stderr]   Downloaded js-sys v0.3.39
[INFO] [stderr]   Downloaded criterion-plot v0.4.2
[INFO] [stderr]   Downloaded memchr v2.3.3
[INFO] [stderr]   Downloaded wasm-bindgen-macro v0.2.62
[INFO] [stderr]   Downloaded regex-automata v0.1.9
[INFO] [stderr]   Downloaded itoa v0.4.5
[INFO] [stderr]   Downloaded maybe-uninit v2.0.0
[INFO] [stderr]   Downloaded crossbeam-utils v0.7.2
[INFO] [stderr]   Downloaded crossbeam-epoch v0.8.2
[INFO] [stderr]   Downloaded csv-core v0.1.10
[INFO] [stderr]   Downloaded wasm-bindgen-shared v0.2.62
[INFO] [stderr]   Downloaded crossbeam-deque v0.7.3
[INFO] [stderr]   Downloaded rayon-core v1.7.0
[INFO] [stderr]   Downloaded semver v0.9.0
[INFO] [stderr]   Downloaded unicode-width v0.1.7
[INFO] [stderr]   Downloaded cast v0.2.3
[INFO] [stderr]   Downloaded memoffset v0.5.4
[INFO] [stderr]   Downloaded hermit-abi v0.1.13
[INFO] [stderr]   Downloaded byteorder v1.3.4
[INFO] [stderr]   Downloaded rayon v1.3.0
[INFO] [stderr]   Downloaded clap v2.33.1
[INFO] [stderr]   Downloaded semver-parser v0.7.0
[INFO] [stderr]   Downloaded wasm-bindgen v0.2.62
[INFO] [stderr]   Downloaded libc v0.2.70
[INFO] [stderr]   Downloaded bstr v0.2.13
[INFO] [stderr]   Downloaded rustc_version v0.2.3
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[INFO] [stderr]   Downloaded csv v1.1.3
[INFO] [stderr]   Downloaded wasm-bindgen-macro-support v0.2.62
[INFO] [stderr]   Downloaded regex-syntax v0.6.17
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[INFO] [stderr]   Downloaded tinytemplate v1.0.4
[INFO] [stderr]   Downloaded num_cpus v1.13.0
[INFO] [stderr]   Downloaded crossbeam-queue v0.2.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/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] 59fb6b8e5cd3ac2de55b6570ffd1f994a4210872bf52fd5c73f1901c314b85f3
[INFO] running `Command { std: "docker" "start" "-a" "59fb6b8e5cd3ac2de55b6570ffd1f994a4210872bf52fd5c73f1901c314b85f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "59fb6b8e5cd3ac2de55b6570ffd1f994a4210872bf52fd5c73f1901c314b85f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "59fb6b8e5cd3ac2de55b6570ffd1f994a4210872bf52fd5c73f1901c314b85f3", kill_on_drop: false }`
[INFO] [stdout] 59fb6b8e5cd3ac2de55b6570ffd1f994a4210872bf52fd5c73f1901c314b85f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-109/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] 4a0693c3587604538e2274fab535dcbaf2d9fefe459e8a5ecbef3367aa18fd2e
[INFO] running `Command { std: "docker" "start" "-a" "4a0693c3587604538e2274fab535dcbaf2d9fefe459e8a5ecbef3367aa18fd2e", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling num-traits v0.2.11
[INFO] [stderr]  Documenting fwd_ad v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0557]: feature has been removed
[INFO] [stdout]  --> src/lib.rs:3:13
[INFO] [stdout]   |
[INFO] [stdout] 3 |     feature(external_doc),
[INFO] [stdout]   |             ^^^^^^^^^^^^ feature has been removed
[INFO] [stdout]   |
[INFO] [stdout]   = note: use #[doc = include_str!("filename")] instead, which handles macro invocations
[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 E0557`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `fwd_ad`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name fwd_ad src/lib.rs -o /opt/rustwide/target/doc --cfg 'feature="default"' --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=ced14d48ebf7a0d6 -L dependency=/opt/rustwide/target/debug/deps --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-ae9ae1d7ab84af61.rmeta --cap-lints=warn --crate-version 0.2.0` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "4a0693c3587604538e2274fab535dcbaf2d9fefe459e8a5ecbef3367aa18fd2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a0693c3587604538e2274fab535dcbaf2d9fefe459e8a5ecbef3367aa18fd2e", kill_on_drop: false }`
[INFO] [stdout] 4a0693c3587604538e2274fab535dcbaf2d9fefe459e8a5ecbef3367aa18fd2e