[INFO] fetching crate lcpc-brakedown-pc 0.1.1...
[INFO] documenting lcpc-brakedown-pc-0.1.1 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate lcpc-brakedown-pc 0.1.1 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate lcpc-brakedown-pc 0.1.1 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 lcpc-brakedown-pc 0.1.1
[INFO] finished tweaking crates.io crate lcpc-brakedown-pc 0.1.1
[INFO] tweaked toml for crates.io crate lcpc-brakedown-pc 0.1.1 written to /workspace/builds/worker-7-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 addchain v0.2.0
[INFO] [stderr]   Downloaded ff_derive v0.12.1
[INFO] [stderr]   Downloaded ff-derive-num v0.2.0
[INFO] [stderr]   Downloaded lcpc-test-fields v0.1.1
[INFO] [stderr]   Downloaded err-derive v0.2.4
[INFO] [stderr]   Downloaded merlin v2.0.1
[INFO] [stderr]   Downloaded sprs v0.10.0
[INFO] [stderr]   Downloaded lcpc-2d v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] a26e5892508b367d42b17162f8b7cd6afb4b19e4ec0ec3f06832a4bf104cea2a
[INFO] running `Command { std: "docker" "start" "-a" "a26e5892508b367d42b17162f8b7cd6afb4b19e4ec0ec3f06832a4bf104cea2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a26e5892508b367d42b17162f8b7cd6afb4b19e4ec0ec3f06832a4bf104cea2a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a26e5892508b367d42b17162f8b7cd6afb4b19e4ec0ec3f06832a4bf104cea2a", kill_on_drop: false }`
[INFO] [stdout] a26e5892508b367d42b17162f8b7cd6afb4b19e4ec0ec3f06832a4bf104cea2a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] c4e5914e10348ce00dc4f899b8bc04e97e6f6c4a17550bacd7c6cd67897b39c0
[INFO] running `Command { std: "docker" "start" "-a" "c4e5914e10348ce00dc4f899b8bc04e97e6f6c4a17550bacd7c6cd67897b39c0", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling libm v0.2.6
[INFO] [stderr]    Compiling num-traits v0.2.15
[INFO] [stderr]    Compiling num-integer v0.1.45
[INFO] [stderr]    Compiling crossbeam-utils v0.8.15
[INFO] [stderr]    Compiling memoffset v0.8.0
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.14
[INFO] [stderr]    Compiling num-bigint v0.3.3
[INFO] [stderr]    Compiling rustversion v1.0.12
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling rayon-core v1.11.0
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]     Checking getrandom v0.2.9
[INFO] [stderr]    Compiling syn v2.0.15
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling num-complex v0.2.4
[INFO] [stderr]     Checking rand_core v0.6.4
[INFO] [stderr]     Checking either v1.8.1
[INFO] [stderr]    Compiling ndarray v0.14.0
[INFO] [stderr]     Checking rawpointer v0.2.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.17
[INFO] [stderr]     Checking subtle v2.4.1
[INFO] [stderr]     Checking keccak v0.1.3
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking matrixmultiply v0.2.4
[INFO] [stderr]     Checking digest v0.9.0
[INFO] [stderr]     Checking itertools v0.10.5
[INFO] [stderr]     Checking crossbeam-channel v0.5.8
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.3
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]    Compiling err-derive v0.2.4
[INFO] [stderr]     Checking num-complex v0.3.1
[INFO] [stderr]     Checking approx v0.3.2
[INFO] [stderr]     Checking rayon v1.7.0
[INFO] [stderr]     Checking alga v0.9.3
[INFO] [stderr]    Compiling addchain v0.2.0
[INFO] [stderr]     Checking sprs v0.10.0
[INFO] [stderr]    Compiling zeroize_derive v1.4.2
[INFO] [stderr]    Compiling serde_derive v1.0.160
[INFO] [stderr]    Compiling synstructure v0.12.6
[INFO] [stderr]     Checking zeroize v1.6.0
[INFO] [stderr]    Compiling ff_derive v0.12.1
[INFO] [stderr]     Checking merlin v2.0.1
[INFO] [stderr]     Checking ff v0.12.1
[INFO] [stderr]     Checking serde v1.0.160
[INFO] [stderr]     Checking serde_bytes v0.11.9
[INFO] [stderr]     Checking lcpc-2d v0.1.1
[INFO] [stderr]  Documenting lcpc-brakedown-pc v0.1.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | #![feature(test)]
[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 `lcpc-brakedown-pc`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --edition=2018 --crate-type lib --crate-name lcpc_brakedown_pc src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=4a7298729b1ca747 -L dependency=/opt/rustwide/target/debug/deps --extern ff=/opt/rustwide/target/debug/deps/libff-74bd5986fb8217bf.rmeta --extern itertools=/opt/rustwide/target/debug/deps/libitertools-578991b5e0b8e761.rmeta --extern lcpc_2d=/opt/rustwide/target/debug/deps/liblcpc_2d-3d18ad6e27a2c6c8.rmeta --extern ndarray=/opt/rustwide/target/debug/deps/libndarray-5e095062e1c1fdc9.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-b502659acacc5589.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-eceea4d3dd3b8e1e.rmeta --extern rand_chacha=/opt/rustwide/target/debug/deps/librand_chacha-db10f2fca28709dc.rmeta --extern rayon=/opt/rustwide/target/debug/deps/librayon-7c7b941102f614a4.rmeta --extern sprs=/opt/rustwide/target/debug/deps/libsprs-a617ec985eb5e489.rmeta --extern typenum=/opt/rustwide/target/debug/deps/libtypenum-b33689bde3278af4.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "c4e5914e10348ce00dc4f899b8bc04e97e6f6c4a17550bacd7c6cd67897b39c0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4e5914e10348ce00dc4f899b8bc04e97e6f6c4a17550bacd7c6cd67897b39c0", kill_on_drop: false }`
[INFO] [stdout] c4e5914e10348ce00dc4f899b8bc04e97e6f6c4a17550bacd7c6cd67897b39c0
