[INFO] fetching crate rucene 0.1.1...
[INFO] documenting rucene-0.1.1 against 1.69.0 for beta-1.70-rustdoc-1
[INFO] extracting crate rucene 0.1.1 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate rucene 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] removed /workspace/builds/worker-0-tc1/source/rust-toolchain
[INFO] started tweaking crates.io crate rucene 0.1.1
[INFO] finished tweaking crates.io crate rucene 0.1.1
[INFO] tweaked toml for crates.io crate rucene 0.1.1 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate rucene 0.1.1 already has a lockfile, it will not be regenerated
[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 ucd-util v0.1.5
[INFO] [stderr]   Downloaded fasthash v0.3.2
[INFO] [stderr]   Downloaded xoroshiro128 v0.3.0
[INFO] [stderr]   Downloaded crossbeam-queue v0.2.0
[INFO] [stderr]   Downloaded chan-signal v0.3.3
[INFO] [stderr]   Downloaded fasthash-sys v0.3.2
[INFO] [stderr]   Downloaded memmap v0.6.2
[INFO] [stderr]   Downloaded seahash v3.0.6
[INFO] [stderr]   Downloaded flate2 v1.0.13
[INFO] [stderr]   Downloaded utf8-ranges v1.0.4
[INFO] [stderr]   Downloaded unicode_reader v0.1.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 9f8091cfe3e0eb35a30bd3f2705ad92b03ec36ab77be615a90e3d9ea05cedaa3
[INFO] running `Command { std: "docker" "start" "-a" "9f8091cfe3e0eb35a30bd3f2705ad92b03ec36ab77be615a90e3d9ea05cedaa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9f8091cfe3e0eb35a30bd3f2705ad92b03ec36ab77be615a90e3d9ea05cedaa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9f8091cfe3e0eb35a30bd3f2705ad92b03ec36ab77be615a90e3d9ea05cedaa3", kill_on_drop: false }`
[INFO] [stdout] 9f8091cfe3e0eb35a30bd3f2705ad92b03ec36ab77be615a90e3d9ea05cedaa3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] f653ecb1c2fc8df15b11d70a9a753fee74c0d31033d9a39e476284cb5a7a6dbd
[INFO] running `Command { std: "docker" "start" "-a" "f653ecb1c2fc8df15b11d70a9a753fee74c0d31033d9a39e476284cb5a7a6dbd", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling semver-parser v0.7.0
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling cc v1.0.48
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]     Checking scopeguard v1.0.0
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling semver v0.9.0
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]     Checking adler32 v1.0.4
[INFO] [stderr]     Checking ucd-util v0.1.5
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling rustc_version v0.2.3
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]    Compiling fasthash v0.3.2
[INFO] [stderr]     Checking bit-vec v0.4.4
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]     Checking bit-set v0.4.0
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]     Checking miniz_oxide v0.3.5
[INFO] [stderr]    Compiling fasthash-sys v0.3.2
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking unicode-segmentation v1.6.0
[INFO] [stderr]     Checking seahash v3.0.6
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking utf8-ranges v1.0.4
[INFO] [stderr]     Checking itoa v0.4.4
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]     Checking crossbeam-queue v0.2.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[INFO] [stderr]     Checking crossbeam-channel v0.4.0
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]     Checking unicode_reader v0.1.1
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking crossbeam-deque v0.7.2
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking xoroshiro128 v0.3.0
[INFO] [stderr]     Checking chan v0.1.23
[INFO] [stderr]     Checking crossbeam v0.7.3
[INFO] [stderr]     Checking chan-signal v0.3.3
[INFO] [stderr]     Checking backtrace v0.3.40
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]  Documenting rucene 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:18:1
[INFO] [stdout]    |
[INFO] [stdout] 18 | #![feature(exact_size_is_empty)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:19:1
[INFO] [stdout]    |
[INFO] [stdout] 19 | #![feature(drain_filter)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:20:1
[INFO] [stdout]    |
[INFO] [stdout] 20 | #![feature(hashmap_internals)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:21:1
[INFO] [stdout]    |
[INFO] [stdout] 21 | #![feature(integer_atomics)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:22:1
[INFO] [stdout]    |
[INFO] [stdout] 22 | #![feature(vec_remove_item)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:23:1
[INFO] [stdout]    |
[INFO] [stdout] 23 | #![feature(specialization)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:25:1
[INFO] [stdout]    |
[INFO] [stdout] 25 | #![feature(fn_traits)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:26:1
[INFO] [stdout]    |
[INFO] [stdout] 26 | #![feature(maybe_uninit_ref)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]   --> src/lib.rs:27:1
[INFO] [stdout]    |
[INFO] [stdout] 27 | #![feature(maybe_uninit_extra)]
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: the feature `specialization` is incomplete and may not be safe to use and/or cause compiler crashes
[INFO] [stdout]   --> src/lib.rs:23:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | #![feature(specialization)]
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[INFO] [stdout]    = help: consider using `min_specialization` instead, which is more stable and complete
[INFO] [stdout]    = note: `#[warn(incomplete_features)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/core/search/cache/query_cache.rs:776:55
[INFO] [stdout]     |
[INFO] [stdout] 776 |     fn first_doc_from_next_block(&mut self) -> Result<(DocId)> {
[INFO] [stdout]     |                                                       ^     ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 776 -     fn first_doc_from_next_block(&mut self) -> Result<(DocId)> {
[INFO] [stdout] 776 +     fn first_doc_from_next_block(&mut self) -> Result<DocId> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/core/search/query/spans/span.rs:525:47
[INFO] [stdout]     |
[INFO] [stdout] 525 |     fn score_current_doc(&mut self) -> Result<(f32)> {
[INFO] [stdout]     |                                               ^   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 525 -     fn score_current_doc(&mut self) -> Result<(f32)> {
[INFO] [stdout] 525 +     fn score_current_doc(&mut self) -> Result<f32> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/core/util/bkd/bkd_writer.rs:265:60
[INFO] [stdout]     |
[INFO] [stdout] 265 |         let scratch_out = (&mut bkd_writer.scratch_out) as (*mut GrowableByteArrayDataOutput);
[INFO] [stdout]     |                                                            ^                                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 265 -         let scratch_out = (&mut bkd_writer.scratch_out) as (*mut GrowableByteArrayDataOutput);
[INFO] [stdout] 265 +         let scratch_out = (&mut bkd_writer.scratch_out) as *mut GrowableByteArrayDataOutput;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/core/util/bkd/bkd_writer.rs:618:64
[INFO] [stdout]     |
[INFO] [stdout] 618 |         let min_packed_value = (&mut self.min_packed_value) as (*mut Vec<u8>);
[INFO] [stdout]     |                                                                ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 618 -         let min_packed_value = (&mut self.min_packed_value) as (*mut Vec<u8>);
[INFO] [stdout] 618 +         let min_packed_value = (&mut self.min_packed_value) as *mut Vec<u8>;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/core/util/bkd/bkd_writer.rs:619:64
[INFO] [stdout]     |
[INFO] [stdout] 619 |         let max_packed_value = (&mut self.max_packed_value) as (*mut Vec<u8>);
[INFO] [stdout]     |                                                                ^            ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 619 -         let max_packed_value = (&mut self.max_packed_value) as (*mut Vec<u8>);
[INFO] [stdout] 619 +         let max_packed_value = (&mut self.max_packed_value) as *mut Vec<u8>;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/core/util/bkd/bkd_writer.rs:775:59
[INFO] [stdout]     |
[INFO] [stdout] 775 |         let one_dim_writer_ptr = (&mut one_dim_writer) as (*mut OneDimensionBKDWriter<D, O>);
[INFO] [stdout]     |                                                           ^                                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 775 -         let one_dim_writer_ptr = (&mut one_dim_writer) as (*mut OneDimensionBKDWriter<D, O>);
[INFO] [stdout] 775 +         let one_dim_writer_ptr = (&mut one_dim_writer) as *mut OneDimensionBKDWriter<D, O>;
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]    --> src/core/util/bkd/bkd_writer.rs:973:42
[INFO] [stdout]     |
[INFO] [stdout] 973 |                     - (last_split_values[(split_dim * self.bytes_per_dim + prefix)] as u32 as i32);
[INFO] [stdout]     |                                          ^                                       ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 973 -                     - (last_split_values[(split_dim * self.bytes_per_dim + prefix)] as u32 as i32);
[INFO] [stdout] 973 +                     - (last_split_values[split_dim * self.bytes_per_dim + prefix] as u32 as i32);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/core/util/bkd/bkd_writer.rs:1456:52
[INFO] [stdout]      |
[INFO] [stdout] 1456 |             let scratch1 = (&mut self.scratch1) as (*mut Vec<u8>);
[INFO] [stdout]      |                                                    ^            ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1456 -             let scratch1 = (&mut self.scratch1) as (*mut Vec<u8>);
[INFO] [stdout] 1456 +             let scratch1 = (&mut self.scratch1) as *mut Vec<u8>;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/core/util/bkd/bkd_writer.rs:1494:68
[INFO] [stdout]      |
[INFO] [stdout] 1494 |                 let min_packed_value = (&self.min_packed_value) as (*const Vec<u8>);
[INFO] [stdout]      |                                                                    ^              ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1494 -                 let min_packed_value = (&self.min_packed_value) as (*const Vec<u8>);
[INFO] [stdout] 1494 +                 let min_packed_value = (&self.min_packed_value) as *const Vec<u8>;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/core/util/bkd/bkd_writer.rs:1495:68
[INFO] [stdout]      |
[INFO] [stdout] 1495 |                 let max_packed_value = (&self.max_packed_value) as (*const Vec<u8>);
[INFO] [stdout]      |                                                                    ^              ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1495 -                 let max_packed_value = (&self.max_packed_value) as (*const Vec<u8>);
[INFO] [stdout] 1495 +                 let max_packed_value = (&self.max_packed_value) as *const Vec<u8>;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]     --> src/core/util/bkd/bkd_writer.rs:1505:50
[INFO] [stdout]      |
[INFO] [stdout] 1505 |             let source = (&slices[split_dim]) as (*const PathSlice<PointWriterEnum<D>>);
[INFO] [stdout]      |                                                  ^                                    ^
[INFO] [stdout]      |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]      |
[INFO] [stdout] 1505 -             let source = (&slices[split_dim]) as (*const PathSlice<PointWriterEnum<D>>);
[INFO] [stdout] 1505 +             let source = (&slices[split_dim]) as *const PathSlice<PointWriterEnum<D>>;
[INFO] [stdout]      |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]    --> src/core/util/bkd/offline_point.rs:147:9
[INFO] [stdout]     |
[INFO] [stdout] 147 |         (i1p1 << 24 | i1p2 << 16 | i1p3 << 8 | i1p4)
[INFO] [stdout]     |         ^                                          ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 147 -         (i1p1 << 24 | i1p2 << 16 | i1p3 << 8 | i1p4)
[INFO] [stdout] 147 +         i1p1 << 24 | i1p2 << 16 | i1p3 << 8 | i1p4
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]    --> src/core/util/fst/fst_builder.rs:629:85
[INFO] [stdout]     |
[INFO] [stdout] 629 |     pub fn add(&mut self, builder: &mut FstBuilder<F>, node_index: usize) -> Result<(u64)> {
[INFO] [stdout]     |                                                                                     ^   ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 629 -     pub fn add(&mut self, builder: &mut FstBuilder<F>, node_index: usize) -> Result<(u64)> {
[INFO] [stdout] 629 +     pub fn add(&mut self, builder: &mut FstBuilder<F>, node_index: usize) -> Result<u64> {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around block return value
[INFO] [stdout]   --> src/core/util/bit_util.rs:35:9
[INFO] [stdout]    |
[INFO] [stdout] 35 |         ((*self as u64 >> 1) as i64 ^ -(self & 1))
[INFO] [stdout]    |         ^                                        ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 35 -         ((*self as u64 >> 1) as i64 ^ -(self & 1))
[INFO] [stdout] 35 +         (*self as u64 >> 1) as i64 ^ -(self & 1)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 9 previous errors; 15 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: could not document `rucene`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `rustdoc --crate-type lib --crate-name rucene src/lib.rs -o /opt/rustwide/target/doc --error-format=json --json=diagnostic-rendered-ansi,artifacts,future-incompat --document-private-items -C metadata=eead759141afef4c -L dependency=/opt/rustwide/target/debug/deps --extern byteorder=/opt/rustwide/target/debug/deps/libbyteorder-31877efb397b315e.rmeta --extern bytes=/opt/rustwide/target/debug/deps/libbytes-c74aeace4fa9c538.rmeta --extern chan=/opt/rustwide/target/debug/deps/libchan-a858bb76b2f016e0.rmeta --extern chan_signal=/opt/rustwide/target/debug/deps/libchan_signal-4de4d90211a141c9.rmeta --extern crc=/opt/rustwide/target/debug/deps/libcrc-344b0ae1c462c34c.rmeta --extern crossbeam=/opt/rustwide/target/debug/deps/libcrossbeam-4455951558e5b5a4.rmeta --extern either=/opt/rustwide/target/debug/deps/libeither-00107484dee1a9d3.rmeta --extern error_chain=/opt/rustwide/target/debug/deps/liberror_chain-7f7eaa1141d306d9.rmeta --extern fasthash=/opt/rustwide/target/debug/deps/libfasthash-c137a09b7ecb7ff9.rmeta --extern flate2=/opt/rustwide/target/debug/deps/libflate2-e669656a82b8bec1.rmeta --extern lazy_static=/opt/rustwide/target/debug/deps/liblazy_static-9c7d51f549cf58b7.rmeta --extern log=/opt/rustwide/target/debug/deps/liblog-a87020c44a871e97.rmeta --extern memmap=/opt/rustwide/target/debug/deps/libmemmap-5dae11d123a5e15a.rmeta --extern num_traits=/opt/rustwide/target/debug/deps/libnum_traits-0c77d2af0e052608.rmeta --extern num_cpus=/opt/rustwide/target/debug/deps/libnum_cpus-4cc4ae9d399939d5.rmeta --extern rand=/opt/rustwide/target/debug/deps/librand-51d06c393fd66189.rmeta --extern regex=/opt/rustwide/target/debug/deps/libregex-01ff145d2c50c764.rmeta --extern serde=/opt/rustwide/target/debug/deps/libserde-def870587a393ea9.rmeta --extern serde_derive=/opt/rustwide/target/debug/deps/libserde_derive-6f147b21f0544cac.so --extern serde_json=/opt/rustwide/target/debug/deps/libserde_json-c20ae775cf2e3053.rmeta --extern smallvec=/opt/rustwide/target/debug/deps/libsmallvec-e034cc50f5d092cf.rmeta --extern thread_local=/opt/rustwide/target/debug/deps/libthread_local-be7dc20bbae9c049.rmeta --extern unicode_reader=/opt/rustwide/target/debug/deps/libunicode_reader-54ef1d7a3b5c3aea.rmeta --cap-lints=warn --crate-version 0.1.1` (exit status: 1)
[INFO] running `Command { std: "docker" "inspect" "f653ecb1c2fc8df15b11d70a9a753fee74c0d31033d9a39e476284cb5a7a6dbd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f653ecb1c2fc8df15b11d70a9a753fee74c0d31033d9a39e476284cb5a7a6dbd", kill_on_drop: false }`
[INFO] [stdout] f653ecb1c2fc8df15b11d70a9a753fee74c0d31033d9a39e476284cb5a7a6dbd
