[INFO] fetching crate rucene 0.1.1...
[INFO] documenting rucene-0.1.1 against master#394e1b40d264aa6928811919c1124fa248e7d802 for pr-73566
[INFO] extracting crate rucene 0.1.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate rucene 0.1.1 on toolchain 394e1b40d264aa6928811919c1124fa248e7d802
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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-1/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: "/workspace/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 7acc4e59000488ab5b8aee7b5389bbe6eeea57f0528f37b8511e4f276af85239
[INFO] running `Command { std: "docker" "start" "-a" "7acc4e59000488ab5b8aee7b5389bbe6eeea57f0528f37b8511e4f276af85239", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7acc4e59000488ab5b8aee7b5389bbe6eeea57f0528f37b8511e4f276af85239", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7acc4e59000488ab5b8aee7b5389bbe6eeea57f0528f37b8511e4f276af85239", kill_on_drop: false }`
[INFO] [stdout] 7acc4e59000488ab5b8aee7b5389bbe6eeea57f0528f37b8511e4f276af85239
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+394e1b40d264aa6928811919c1124fa248e7d802" "doc" "--frozen" "--no-deps" "--document-private-items" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6c3fa549b1a0dce6072212a942e42838f83d4ff53c79c2e0778ea0ce9f60bda5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6c3fa549b1a0dce6072212a942e42838f83d4ff53c79c2e0778ea0ce9f60bda5", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]    Compiling autocfg v0.1.7
[INFO] [stderr]    Compiling cc v1.0.48
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling memchr v2.2.1
[INFO] [stderr]    Compiling syn v1.0.11
[INFO] [stderr]    Compiling serde v1.0.103
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]    Compiling ryu v1.0.2
[INFO] [stderr]     Checking bit-vec v0.4.4
[INFO] [stderr]     Checking rustc-demangle v0.1.16
[INFO] [stderr]     Checking ucd-util v0.1.5
[INFO] [stderr]    Compiling fasthash v0.3.2
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking lazy_static v0.2.11
[INFO] [stderr]     Checking seahash v3.0.6
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking thread_local v0.3.6
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]     Checking regex-syntax v0.5.6
[INFO] [stderr]     Checking bit-set v0.4.0
[INFO] [stderr]     Checking miniz_oxide v0.3.5
[INFO] [stderr]     Checking unicode_reader v0.1.1
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.6
[INFO] [stderr]    Compiling memoffset v0.5.3
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr]    Compiling crossbeam-utils v0.7.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.8.0
[INFO] [stderr]    Compiling num-traits v0.2.10
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]     Checking aho-corasick v0.6.10
[INFO] [stderr]    Compiling fasthash-sys v0.3.2
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking iovec v0.1.4
[INFO] [stderr]     Checking memmap v0.6.2
[INFO] [stderr]     Checking rand v0.5.6
[INFO] [stderr]     Checking flate2 v1.0.13
[INFO] [stderr]     Checking num_cpus v1.11.1
[INFO] [stderr]     Checking crossbeam-queue v0.2.0
[INFO] [stderr]     Checking crossbeam-channel v0.4.0
[INFO] [stderr]     Checking bytes v0.4.12
[INFO] [stderr]    Compiling backtrace-sys v0.1.32
[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]     Checking regex v0.2.11
[INFO] [stderr]     Checking serde_json v1.0.44
[INFO] [stderr]    Compiling serde_derive v1.0.103
[INFO] [stderr]  Documenting rucene v0.1.1 (/opt/rustwide/workdir)
[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: `#[warn(incomplete_features)]` on by default
[INFO] [stdout]    = note: see issue #31844 <https://github.com/rust-lang/rust/issues/31844> for more information
[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]     |                                                       ^^^^^^^ help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_parens)]` on by default
[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]     |                                               ^^^^^ help: remove these parentheses
[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]     |                                                                                     ^^^^^ help: remove these parentheses
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `[IndexSearcher]` cannot be resolved, ignoring it.
[INFO] [stdout]    --> src/core/search/query/mod.rs:113:6
[INFO] [stdout]     |
[INFO] [stdout] 113 | /// [`IndexSearcher`] dependent state of the query should reside in the [`Weight`]
[INFO] [stdout]     |      ^^^^^^^^^^^^^^^ cannot be resolved, ignoring
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(intra_doc_link_resolution_failure)]` on by default
[INFO] [stdout]     = help: to escape `[` and `]` characters, just add '\' before them like `\[` or `\]`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 04s
[INFO] running `Command { std: "docker" "inspect" "6c3fa549b1a0dce6072212a942e42838f83d4ff53c79c2e0778ea0ce9f60bda5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6c3fa549b1a0dce6072212a942e42838f83d4ff53c79c2e0778ea0ce9f60bda5", kill_on_drop: false }`
[INFO] [stdout] 6c3fa549b1a0dce6072212a942e42838f83d4ff53c79c2e0778ea0ce9f60bda5