[INFO] fetching crate abra 0.0.1...
[INFO] testing abra-0.0.1 against master#1871252fc8bb672d40787e67404e6eaae7059369 for pr-125151
[INFO] extracting crate abra 0.0.1 into /workspace/builds/worker-1-tc1/source
[INFO] validating manifest of crates.io crate abra 0.0.1 on toolchain 1871252fc8bb672d40787e67404e6eaae7059369
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate abra 0.0.1
[INFO] finished tweaking crates.io crate abra 0.0.1
[INFO] tweaked toml for crates.io crate abra 0.0.1 written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 27 packages to latest compatible versions
[INFO] [stderr]       Adding byteorder v0.5.3 (latest: v1.5.0)
[INFO] [stderr]       Adding chrono v0.2.25 (latest: v0.4.38)
[INFO] [stderr]       Adding num v0.1.42 (latest: v0.4.3)
[INFO] [stderr]       Adding num-bigint v0.1.44 (latest: v0.4.5)
[INFO] [stderr]       Adding num-complex v0.1.43 (latest: v0.4.6)
[INFO] [stderr]       Adding num-rational v0.1.42 (latest: v0.4.2)
[INFO] [stderr]       Adding rand v0.4.6 (latest: v0.8.5)
[INFO] [stderr]       Adding rand_core v0.3.1 (latest: v0.6.4)
[INFO] [stderr]       Adding rand_core v0.4.2 (latest: v0.6.4)
[INFO] [stderr]       Adding rdrand v0.4.0 (latest: v0.8.3)
[INFO] [stderr]       Adding roaring v0.4.2 (latest: v0.10.4)
[INFO] [stderr]       Adding time v0.1.45 (latest: v0.3.36)
[INFO] [stderr]       Adding wasi v0.10.0+wasi-snapshot-preview1 (latest: v0.13.1+wasi-0.2.0)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rdrand v0.4.0
[INFO] [stderr]   Downloaded num-integer v0.1.46
[INFO] [stderr]   Downloaded rustc-serialize v0.3.25
[INFO] [stderr]   Downloaded num-rational v0.1.42
[INFO] [stderr]   Downloaded num v0.1.42
[INFO] [stderr]   Downloaded num-bigint v0.1.44
[INFO] [stderr]   Downloaded byteorder v0.5.3
[INFO] [stderr]   Downloaded wasi v0.10.0+wasi-snapshot-preview1
[INFO] [stderr]   Downloaded time v0.1.45
[INFO] [stderr]   Downloaded chrono v0.2.25
[INFO] [stderr]   Downloaded maplit v1.0.2
[INFO] [stderr]   Downloaded num-complex v0.1.43
[INFO] [stderr]   Downloaded num-iter v0.1.45
[INFO] [stderr]   Downloaded fuchsia-cprng v0.1.1
[INFO] [stderr]   Downloaded rand_core v0.4.2
[INFO] [stderr]   Downloaded rand_core v0.3.1
[INFO] [stderr]   Downloaded rand v0.4.6
[INFO] [stderr]   Downloaded roaring v0.4.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b7a40d7ae6eb26dea65530c929605eb70771441b56d324fd2cfed86674b72e22
[INFO] running `Command { std: "docker" "start" "-a" "b7a40d7ae6eb26dea65530c929605eb70771441b56d324fd2cfed86674b72e22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b7a40d7ae6eb26dea65530c929605eb70771441b56d324fd2cfed86674b72e22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7a40d7ae6eb26dea65530c929605eb70771441b56d324fd2cfed86674b72e22", kill_on_drop: false }`
[INFO] [stdout] b7a40d7ae6eb26dea65530c929605eb70771441b56d324fd2cfed86674b72e22
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 985ea8e0195102cb16454456f8a5239e0ed2fb484c19f4031ff40b82b026eedd
[INFO] running `Command { std: "docker" "start" "-a" "985ea8e0195102cb16454456f8a5239e0ed2fb484c19f4031ff40b82b026eedd", kill_on_drop: false }`
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling libc v0.2.155
[INFO] [stderr]    Compiling rustc-serialize v0.3.25
[INFO] [stderr]    Compiling log v0.4.21
[INFO] [stderr]    Compiling unicode-segmentation v1.11.0
[INFO] [stderr]    Compiling maplit v1.0.2
[INFO] [stderr]    Compiling byteorder v0.5.3
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling time v0.1.45
[INFO] [stderr]    Compiling num-integer v0.1.46
[INFO] [stderr]    Compiling num-iter v0.1.45
[INFO] [stderr]    Compiling num-bigint v0.1.44
[INFO] [stderr]    Compiling num-complex v0.1.43
[INFO] [stderr]    Compiling num-rational v0.1.42
[INFO] [stderr]    Compiling num v0.1.42
[INFO] [stderr]    Compiling roaring v0.4.2
[INFO] [stderr]    Compiling chrono v0.2.25
[INFO] [stderr]    Compiling abra v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `TF_IDF` should have an upper camel case name
[INFO] [stdout]  --> src/similarity.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     TF_IDF,
[INFO] [stdout]   |     ^^^^^^ help: convert the identifier to upper camel case: `TfIdf`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/analysis/filters/lowercase.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 |     tokens: Box<Iterator<Item=Token> + 'a>,
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 6 |     tokens: Box<dyn Iterator<Item=Token> + 'a>,
[INFO] [stdout]   |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/analysis/filters/ngram.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 |     tokens: Box<Iterator<Item=Token> + 'a>,
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 |     tokens: Box<dyn Iterator<Item=Token> + 'a>,
[INFO] [stdout]   |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/analysis/filters/asciifolding.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 |     tokens: Box<Iterator<Item=Token> + 'a>,
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     tokens: Box<dyn Iterator<Item=Token> + 'a>,
[INFO] [stdout]   |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/store/mod.rs:16:61
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn iter_terms(&'a self, field_name: &str) -> Option<Box<Iterator<Item=&'a [u8]> + 'a>>;
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn iter_terms(&'a self, field_name: &str) -> Option<Box<dyn Iterator<Item=&'a [u8]> + 'a>>;
[INFO] [stdout]    |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/analysis/filters/lowercase.rs:11:28
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(tokens: Box<Iterator<Item=Token> +'a>) -> LowercaseFilter<'a> {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(tokens: Box<dyn Iterator<Item=Token> +'a>) -> LowercaseFilter<'a> {
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/analysis/filters/ngram.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(tokens: Box<Iterator<Item=Token> +'a >, min_size: usize, max_size: usize, edge: Edge) -> NGramFilter<'a> {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(tokens: Box<dyn Iterator<Item=Token> +'a >, min_size: usize, max_size: usize, edge: Edge) -> NGramFilter<'a> {
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/analysis/filters/asciifolding.rs:12:28
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(tokens: Box<Iterator<Item=Token> +'a >) -> ASCIIFoldingFilter<'a> {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(tokens: Box<dyn Iterator<Item=Token> +'a >) -> ASCIIFoldingFilter<'a> {
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/store/memory.rs:167:61
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn iter_terms(&'a self, field_name: &str) -> Option<Box<Iterator<Item=&'a [u8]> + 'a>> {
[INFO] [stdout]     |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn iter_terms(&'a self, field_name: &str) -> Option<Box<dyn Iterator<Item=&'a [u8]> + 'a>> {
[INFO] [stdout]     |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/analysis/tokenizers/mod.rs:22:57
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn initialise<'a>(&self, input: &'a str) -> Box<Iterator<Item=Token> + 'a> {
[INFO] [stdout]    |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn initialise<'a>(&self, input: &'a str) -> Box<dyn Iterator<Item=Token> + 'a> {
[INFO] [stdout]    |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/analysis/filters/mod.rs:25:45
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn initialise<'a>(&self, input: Box<Iterator<Item=Token> + 'a>) -> Box<Iterator<Item=Token> + 'a> {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn initialise<'a>(&self, input: Box<dyn Iterator<Item=Token> + 'a>) -> Box<Iterator<Item=Token> + 'a> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/analysis/filters/mod.rs:25:80
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn initialise<'a>(&self, input: Box<Iterator<Item=Token> + 'a>) -> Box<Iterator<Item=Token> + 'a> {
[INFO] [stdout]    |                                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn initialise<'a>(&self, input: Box<Iterator<Item=Token> + 'a>) -> Box<dyn Iterator<Item=Token> + 'a> {
[INFO] [stdout]    |                                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/analysis/tokenizers/standard.rs:28:18
[INFO] [stdout]    |
[INFO] [stdout] 28 |             Some(mut word) => {
[INFO] [stdout]    |                  ----^^^^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/analysis/filters/ngram.rs:41:29
[INFO] [stdout]    |
[INFO] [stdout] 41 |                         let mut ngram_generator = NGramGenerator::new(&word, self.min_size, self.max_size, self.edge);
[INFO] [stdout]    |                             ----^^^^^^^^^^^^^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/store/memory.rs:85:21
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 let mut field = self.fields.get_mut(field_name).unwrap();
[INFO] [stdout]    |                     ----^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/store/memory.rs:95:21
[INFO] [stdout]    |
[INFO] [stdout] 95 |                 let mut term = field.terms.get_mut(&term_bytes).unwrap();
[INFO] [stdout]    |                     ----^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scorer`
[INFO] [stdout]    --> src/query/mod.rs:123:64
[INFO] [stdout]     |
[INFO] [stdout] 123 |             Query::MatchTerm{ref field, ref term, ref matcher, ref scorer} => {
[INFO] [stdout]     |                                                                ^^^^^^^^^^ help: try ignoring the field: `scorer: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `boost`
[INFO] [stdout]    --> src/query/mod.rs:182:37
[INFO] [stdout]     |
[INFO] [stdout] 182 |             Query::Boost{ref query, boost} => {
[INFO] [stdout]     |                                     ^^^^^ help: try ignoring the field: `boost: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scorer`
[INFO] [stdout]    --> src/query_set.rs:227:60
[INFO] [stdout]     |
[INFO] [stdout] 227 |         Query::MatchTerm{ref field, ref term, ref matcher, ref scorer} => {
[INFO] [stdout]     |                                                            ^^^^^^^^^^ help: try ignoring the field: `scorer: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `queries`
[INFO] [stdout]    --> src/query_set.rs:320:29
[INFO] [stdout]     |
[INFO] [stdout] 320 |         Query::NDisjunction{ref queries, minimum_should_match} => {
[INFO] [stdout]     |                             ^^^^^^^^^^^ help: try ignoring the field: `queries: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `minimum_should_match`
[INFO] [stdout]    --> src/query_set.rs:320:42
[INFO] [stdout]     |
[INFO] [stdout] 320 |         Query::NDisjunction{ref queries, minimum_should_match} => {
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^ help: try ignoring the field: `minimum_should_match: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `boost`
[INFO] [stdout]    --> src/query_set.rs:351:33
[INFO] [stdout]     |
[INFO] [stdout] 351 |         Query::Boost{ref query, boost} => {
[INFO] [stdout]     |                                 ^^^^^ help: try ignoring the field: `boost: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/request.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let mut iterator = build_iterator_from_query(index_reader, &self.query);
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `tokenizers` and `filters` are never read
[INFO] [stdout]   --> src/analysis/registry.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct AnalyzerRegistry {
[INFO] [stdout]    |            ---------------- fields in this struct
[INFO] [stdout] 11 |     analyzers: HashMap<String, Analyzer>,
[INFO] [stdout] 12 |     tokenizers: HashMap<String, TokenizerSpec>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 13 |     filters: HashMap<String, FilterSpec>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AnalyzerRegistry` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/query_set.rs:252:59
[INFO] [stdout]     |
[INFO] [stdout] 252 | ...                   return Some(k.clone());
[INFO] [stdout]     |                                    ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[u8]` does not implement `Clone`, so calling `clone` on `&[u8]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 3.38s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: num-bigint v0.1.44, num-complex v0.1.43, num-rational v0.1.42
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "985ea8e0195102cb16454456f8a5239e0ed2fb484c19f4031ff40b82b026eedd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "985ea8e0195102cb16454456f8a5239e0ed2fb484c19f4031ff40b82b026eedd", kill_on_drop: false }`
[INFO] [stdout] 985ea8e0195102cb16454456f8a5239e0ed2fb484c19f4031ff40b82b026eedd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f2e4f643e0fa362f3480bde2ee4bd2b29fa8efe0105eb63d213141474ee86a96
[INFO] running `Command { std: "docker" "start" "-a" "f2e4f643e0fa362f3480bde2ee4bd2b29fa8efe0105eb63d213141474ee86a96", kill_on_drop: false }`
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `TF_IDF` should have an upper camel case name
[INFO] [stdout]  --> src/similarity.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     TF_IDF,
[INFO] [stdout]   |     ^^^^^^ help: convert the identifier to upper camel case: `TfIdf`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/analysis/filters/lowercase.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 |     tokens: Box<Iterator<Item=Token> + 'a>,
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 6 |     tokens: Box<dyn Iterator<Item=Token> + 'a>,
[INFO] [stdout]   |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/analysis/filters/ngram.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 |     tokens: Box<Iterator<Item=Token> + 'a>,
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 |     tokens: Box<dyn Iterator<Item=Token> + 'a>,
[INFO] [stdout]   |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/analysis/filters/asciifolding.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 |     tokens: Box<Iterator<Item=Token> + 'a>,
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     tokens: Box<dyn Iterator<Item=Token> + 'a>,
[INFO] [stdout]   |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/store/mod.rs:16:61
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn iter_terms(&'a self, field_name: &str) -> Option<Box<Iterator<Item=&'a [u8]> + 'a>>;
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn iter_terms(&'a self, field_name: &str) -> Option<Box<dyn Iterator<Item=&'a [u8]> + 'a>>;
[INFO] [stdout]    |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/analysis/filters/lowercase.rs:11:28
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(tokens: Box<Iterator<Item=Token> +'a>) -> LowercaseFilter<'a> {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(tokens: Box<dyn Iterator<Item=Token> +'a>) -> LowercaseFilter<'a> {
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/analysis/filters/ngram.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(tokens: Box<Iterator<Item=Token> +'a >, min_size: usize, max_size: usize, edge: Edge) -> NGramFilter<'a> {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(tokens: Box<dyn Iterator<Item=Token> +'a >, min_size: usize, max_size: usize, edge: Edge) -> NGramFilter<'a> {
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/analysis/filters/asciifolding.rs:12:28
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(tokens: Box<Iterator<Item=Token> +'a >) -> ASCIIFoldingFilter<'a> {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(tokens: Box<dyn Iterator<Item=Token> +'a >) -> ASCIIFoldingFilter<'a> {
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/store/memory.rs:167:61
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn iter_terms(&'a self, field_name: &str) -> Option<Box<Iterator<Item=&'a [u8]> + 'a>> {
[INFO] [stdout]     |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn iter_terms(&'a self, field_name: &str) -> Option<Box<dyn Iterator<Item=&'a [u8]> + 'a>> {
[INFO] [stdout]     |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/analysis/tokenizers/mod.rs:22:57
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn initialise<'a>(&self, input: &'a str) -> Box<Iterator<Item=Token> + 'a> {
[INFO] [stdout]    |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn initialise<'a>(&self, input: &'a str) -> Box<dyn Iterator<Item=Token> + 'a> {
[INFO] [stdout]    |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/analysis/filters/mod.rs:25:45
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn initialise<'a>(&self, input: Box<Iterator<Item=Token> + 'a>) -> Box<Iterator<Item=Token> + 'a> {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn initialise<'a>(&self, input: Box<dyn Iterator<Item=Token> + 'a>) -> Box<Iterator<Item=Token> + 'a> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/analysis/filters/mod.rs:25:80
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn initialise<'a>(&self, input: Box<Iterator<Item=Token> + 'a>) -> Box<Iterator<Item=Token> + 'a> {
[INFO] [stdout]    |                                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn initialise<'a>(&self, input: Box<Iterator<Item=Token> + 'a>) -> Box<dyn Iterator<Item=Token> + 'a> {
[INFO] [stdout]    |                                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/analysis/tokenizers/standard.rs:28:18
[INFO] [stdout]    |
[INFO] [stdout] 28 |             Some(mut word) => {
[INFO] [stdout]    |                  ----^^^^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/analysis/filters/ngram.rs:41:29
[INFO] [stdout]    |
[INFO] [stdout] 41 |                         let mut ngram_generator = NGramGenerator::new(&word, self.min_size, self.max_size, self.edge);
[INFO] [stdout]    |                             ----^^^^^^^^^^^^^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/store/memory.rs:85:21
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 let mut field = self.fields.get_mut(field_name).unwrap();
[INFO] [stdout]    |                     ----^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/store/memory.rs:95:21
[INFO] [stdout]    |
[INFO] [stdout] 95 |                 let mut term = field.terms.get_mut(&term_bytes).unwrap();
[INFO] [stdout]    |                     ----^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scorer`
[INFO] [stdout]    --> src/query/mod.rs:123:64
[INFO] [stdout]     |
[INFO] [stdout] 123 |             Query::MatchTerm{ref field, ref term, ref matcher, ref scorer} => {
[INFO] [stdout]     |                                                                ^^^^^^^^^^ help: try ignoring the field: `scorer: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `boost`
[INFO] [stdout]    --> src/query/mod.rs:182:37
[INFO] [stdout]     |
[INFO] [stdout] 182 |             Query::Boost{ref query, boost} => {
[INFO] [stdout]     |                                     ^^^^^ help: try ignoring the field: `boost: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scorer`
[INFO] [stdout]    --> src/query_set.rs:227:60
[INFO] [stdout]     |
[INFO] [stdout] 227 |         Query::MatchTerm{ref field, ref term, ref matcher, ref scorer} => {
[INFO] [stdout]     |                                                            ^^^^^^^^^^ help: try ignoring the field: `scorer: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `queries`
[INFO] [stdout]    --> src/query_set.rs:320:29
[INFO] [stdout]     |
[INFO] [stdout] 320 |         Query::NDisjunction{ref queries, minimum_should_match} => {
[INFO] [stdout]     |                             ^^^^^^^^^^^ help: try ignoring the field: `queries: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `minimum_should_match`
[INFO] [stdout]    --> src/query_set.rs:320:42
[INFO] [stdout]     |
[INFO] [stdout] 320 |         Query::NDisjunction{ref queries, minimum_should_match} => {
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^ help: try ignoring the field: `minimum_should_match: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `boost`
[INFO] [stdout]    --> src/query_set.rs:351:33
[INFO] [stdout]     |
[INFO] [stdout] 351 |         Query::Boost{ref query, boost} => {
[INFO] [stdout]     |                                 ^^^^^ help: try ignoring the field: `boost: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/request.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let mut iterator = build_iterator_from_query(index_reader, &self.query);
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `tokenizers` and `filters` are never read
[INFO] [stdout]   --> src/analysis/registry.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct AnalyzerRegistry {
[INFO] [stdout]    |            ---------------- fields in this struct
[INFO] [stdout] 11 |     analyzers: HashMap<String, Analyzer>,
[INFO] [stdout] 12 |     tokenizers: HashMap<String, TokenizerSpec>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 13 |     filters: HashMap<String, FilterSpec>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AnalyzerRegistry` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling abra v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/query_set.rs:252:59
[INFO] [stdout]     |
[INFO] [stdout] 252 | ...                   return Some(k.clone());
[INFO] [stdout]     |                                    ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[u8]` does not implement `Clone`, so calling `clone` on `&[u8]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 27 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `term::Term`
[INFO] [stdout]    --> src/analysis/ngram_generator.rs:120:9
[INFO] [stdout]     |
[INFO] [stdout] 120 |     use term::Term;
[INFO] [stdout]     |         ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `token::Token`
[INFO] [stdout]    --> src/analysis/ngram_generator.rs:121:9
[INFO] [stdout]     |
[INFO] [stdout] 121 |     use token::Token;
[INFO] [stdout]     |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]   --> src/analysis/filters/lowercase.rs:56:71
[INFO] [stdout]    |
[INFO] [stdout] 56 |         let token_filter = LowercaseFilter::new(Box::new(tokens.drain((..))));
[INFO] [stdout]    |                                                                       ^  ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 56 -         let token_filter = LowercaseFilter::new(Box::new(tokens.drain((..))));
[INFO] [stdout] 56 +         let token_filter = LowercaseFilter::new(Box::new(tokens.drain(..)));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]   --> src/analysis/filters/lowercase.rs:73:71
[INFO] [stdout]    |
[INFO] [stdout] 73 |         let token_filter = LowercaseFilter::new(Box::new(tokens.drain((..))));
[INFO] [stdout]    |                                                                       ^  ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 73 -         let token_filter = LowercaseFilter::new(Box::new(tokens.drain((..))));
[INFO] [stdout] 73 +         let token_filter = LowercaseFilter::new(Box::new(tokens.drain(..)));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]   --> src/analysis/filters/ngram.rs:74:67
[INFO] [stdout]    |
[INFO] [stdout] 74 |         let token_filter = NGramFilter::new(Box::new(tokens.drain((..))), 2, 3, Edge::Neither);
[INFO] [stdout]    |                                                                   ^  ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 74 -         let token_filter = NGramFilter::new(Box::new(tokens.drain((..))), 2, 3, Edge::Neither);
[INFO] [stdout] 74 +         let token_filter = NGramFilter::new(Box::new(tokens.drain(..)), 2, 3, Edge::Neither);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]   --> src/analysis/filters/ngram.rs:95:67
[INFO] [stdout]    |
[INFO] [stdout] 95 |         let token_filter = NGramFilter::new(Box::new(tokens.drain((..))), 2, 3, Edge::Left);
[INFO] [stdout]    |                                                                   ^  ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 95 -         let token_filter = NGramFilter::new(Box::new(tokens.drain((..))), 2, 3, Edge::Left);
[INFO] [stdout] 95 +         let token_filter = NGramFilter::new(Box::new(tokens.drain(..)), 2, 3, Edge::Left);
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/analysis/filters/ngram.rs:112:67
[INFO] [stdout]     |
[INFO] [stdout] 112 |         let token_filter = NGramFilter::new(Box::new(tokens.drain((..))), 2, 1000, Edge::Left);
[INFO] [stdout]     |                                                                   ^  ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 112 -         let token_filter = NGramFilter::new(Box::new(tokens.drain((..))), 2, 1000, Edge::Left);
[INFO] [stdout] 112 +         let token_filter = NGramFilter::new(Box::new(tokens.drain(..)), 2, 1000, Edge::Left);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]    --> src/analysis/filters/ngram.rs:130:67
[INFO] [stdout]     |
[INFO] [stdout] 130 |         let token_filter = NGramFilter::new(Box::new(tokens.drain((..))), 2, 3, Edge::Right);
[INFO] [stdout]     |                                                                   ^  ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 130 -         let token_filter = NGramFilter::new(Box::new(tokens.drain((..))), 2, 3, Edge::Right);
[INFO] [stdout] 130 +         let token_filter = NGramFilter::new(Box::new(tokens.drain(..)), 2, 3, Edge::Right);
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]   --> src/analysis/filters/asciifolding.rs:55:74
[INFO] [stdout]    |
[INFO] [stdout] 55 |         let token_filter = ASCIIFoldingFilter::new(Box::new(tokens.drain((..))));
[INFO] [stdout]    |                                                                          ^  ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 55 -         let token_filter = ASCIIFoldingFilter::new(Box::new(tokens.drain((..))));
[INFO] [stdout] 55 +         let token_filter = ASCIIFoldingFilter::new(Box::new(tokens.drain(..)));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]   --> src/analysis/filters/asciifolding.rs:70:74
[INFO] [stdout]    |
[INFO] [stdout] 70 |         let token_filter = ASCIIFoldingFilter::new(Box::new(tokens.drain((..))));
[INFO] [stdout]    |                                                                          ^  ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 70 -         let token_filter = ASCIIFoldingFilter::new(Box::new(tokens.drain((..))));
[INFO] [stdout] 70 +         let token_filter = ASCIIFoldingFilter::new(Box::new(tokens.drain(..)));
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `MemoryIndexStoreReader`
[INFO] [stdout]    --> src/store/memory.rs:237:35
[INFO] [stdout]     |
[INFO] [stdout] 237 |     use super::{MemoryIndexStore, MemoryIndexStoreReader};
[INFO] [stdout]     |                                   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `TF_IDF` should have an upper camel case name
[INFO] [stdout]  --> src/similarity.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     TF_IDF,
[INFO] [stdout]   |     ^^^^^^ help: convert the identifier to upper camel case: `TfIdf`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/analysis/filters/lowercase.rs:6:17
[INFO] [stdout]   |
[INFO] [stdout] 6 |     tokens: Box<Iterator<Item=Token> + 'a>,
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 6 |     tokens: Box<dyn Iterator<Item=Token> + 'a>,
[INFO] [stdout]   |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/analysis/filters/ngram.rs:9:17
[INFO] [stdout]   |
[INFO] [stdout] 9 |     tokens: Box<Iterator<Item=Token> + 'a>,
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 9 |     tokens: Box<dyn Iterator<Item=Token> + 'a>,
[INFO] [stdout]   |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/analysis/filters/asciifolding.rs:7:17
[INFO] [stdout]   |
[INFO] [stdout] 7 |     tokens: Box<Iterator<Item=Token> + 'a>,
[INFO] [stdout]   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 7 |     tokens: Box<dyn Iterator<Item=Token> + 'a>,
[INFO] [stdout]   |                 +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/store/mod.rs:16:61
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn iter_terms(&'a self, field_name: &str) -> Option<Box<Iterator<Item=&'a [u8]> + 'a>>;
[INFO] [stdout]    |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn iter_terms(&'a self, field_name: &str) -> Option<Box<dyn Iterator<Item=&'a [u8]> + 'a>>;
[INFO] [stdout]    |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/analysis/filters/lowercase.rs:11:28
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(tokens: Box<Iterator<Item=Token> +'a>) -> LowercaseFilter<'a> {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(tokens: Box<dyn Iterator<Item=Token> +'a>) -> LowercaseFilter<'a> {
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/analysis/filters/ngram.rs:18:28
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(tokens: Box<Iterator<Item=Token> +'a >, min_size: usize, max_size: usize, edge: Edge) -> NGramFilter<'a> {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn new(tokens: Box<dyn Iterator<Item=Token> +'a >, min_size: usize, max_size: usize, edge: Edge) -> NGramFilter<'a> {
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/analysis/filters/asciifolding.rs:12:28
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(tokens: Box<Iterator<Item=Token> +'a >) -> ASCIIFoldingFilter<'a> {
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn new(tokens: Box<dyn Iterator<Item=Token> +'a >) -> ASCIIFoldingFilter<'a> {
[INFO] [stdout]    |                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/store/memory.rs:167:61
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn iter_terms(&'a self, field_name: &str) -> Option<Box<Iterator<Item=&'a [u8]> + 'a>> {
[INFO] [stdout]     |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn iter_terms(&'a self, field_name: &str) -> Option<Box<dyn Iterator<Item=&'a [u8]> + 'a>> {
[INFO] [stdout]     |                                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/analysis/tokenizers/mod.rs:22:57
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn initialise<'a>(&self, input: &'a str) -> Box<Iterator<Item=Token> + 'a> {
[INFO] [stdout]    |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 22 |     pub fn initialise<'a>(&self, input: &'a str) -> Box<dyn Iterator<Item=Token> + 'a> {
[INFO] [stdout]    |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/analysis/filters/mod.rs:25:45
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn initialise<'a>(&self, input: Box<Iterator<Item=Token> + 'a>) -> Box<Iterator<Item=Token> + 'a> {
[INFO] [stdout]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn initialise<'a>(&self, input: Box<dyn Iterator<Item=Token> + 'a>) -> Box<Iterator<Item=Token> + 'a> {
[INFO] [stdout]    |                                             +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/analysis/filters/mod.rs:25:80
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn initialise<'a>(&self, input: Box<Iterator<Item=Token> + 'a>) -> Box<Iterator<Item=Token> + 'a> {
[INFO] [stdout]    |                                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn initialise<'a>(&self, input: Box<Iterator<Item=Token> + 'a>) -> Box<dyn Iterator<Item=Token> + 'a> {
[INFO] [stdout]    |                                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/analysis/tokenizers/standard.rs:28:18
[INFO] [stdout]    |
[INFO] [stdout] 28 |             Some(mut word) => {
[INFO] [stdout]    |                  ----^^^^
[INFO] [stdout]    |                  |
[INFO] [stdout]    |                  help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/analysis/filters/ngram.rs:41:29
[INFO] [stdout]    |
[INFO] [stdout] 41 |                         let mut ngram_generator = NGramGenerator::new(&word, self.min_size, self.max_size, self.edge);
[INFO] [stdout]    |                             ----^^^^^^^^^^^^^^^
[INFO] [stdout]    |                             |
[INFO] [stdout]    |                             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/store/memory.rs:85:21
[INFO] [stdout]    |
[INFO] [stdout] 85 |                 let mut field = self.fields.get_mut(field_name).unwrap();
[INFO] [stdout]    |                     ----^^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/store/memory.rs:95:21
[INFO] [stdout]    |
[INFO] [stdout] 95 |                 let mut term = field.terms.get_mut(&term_bytes).unwrap();
[INFO] [stdout]    |                     ----^^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scorer`
[INFO] [stdout]    --> src/query/mod.rs:123:64
[INFO] [stdout]     |
[INFO] [stdout] 123 |             Query::MatchTerm{ref field, ref term, ref matcher, ref scorer} => {
[INFO] [stdout]     |                                                                ^^^^^^^^^^ help: try ignoring the field: `scorer: _`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `boost`
[INFO] [stdout]    --> src/query/mod.rs:182:37
[INFO] [stdout]     |
[INFO] [stdout] 182 |             Query::Boost{ref query, boost} => {
[INFO] [stdout]     |                                     ^^^^^ help: try ignoring the field: `boost: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `scorer`
[INFO] [stdout]    --> src/query_set.rs:227:60
[INFO] [stdout]     |
[INFO] [stdout] 227 |         Query::MatchTerm{ref field, ref term, ref matcher, ref scorer} => {
[INFO] [stdout]     |                                                            ^^^^^^^^^^ help: try ignoring the field: `scorer: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `queries`
[INFO] [stdout]    --> src/query_set.rs:320:29
[INFO] [stdout]     |
[INFO] [stdout] 320 |         Query::NDisjunction{ref queries, minimum_should_match} => {
[INFO] [stdout]     |                             ^^^^^^^^^^^ help: try ignoring the field: `queries: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `minimum_should_match`
[INFO] [stdout]    --> src/query_set.rs:320:42
[INFO] [stdout]     |
[INFO] [stdout] 320 |         Query::NDisjunction{ref queries, minimum_should_match} => {
[INFO] [stdout]     |                                          ^^^^^^^^^^^^^^^^^^^^ help: try ignoring the field: `minimum_should_match: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `boost`
[INFO] [stdout]    --> src/query_set.rs:351:33
[INFO] [stdout]     |
[INFO] [stdout] 351 |         Query::Boost{ref query, boost} => {
[INFO] [stdout]     |                                 ^^^^^ help: try ignoring the field: `boost: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/request.rs:21:13
[INFO] [stdout]    |
[INFO] [stdout] 21 |         let mut iterator = build_iterator_from_query(index_reader, &self.query);
[INFO] [stdout]    |             ----^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `tokenizers` and `filters` are never read
[INFO] [stdout]   --> src/analysis/registry.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | pub struct AnalyzerRegistry {
[INFO] [stdout]    |            ---------------- fields in this struct
[INFO] [stdout] 11 |     analyzers: HashMap<String, Analyzer>,
[INFO] [stdout] 12 |     tokenizers: HashMap<String, TokenizerSpec>,
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 13 |     filters: HashMap<String, FilterSpec>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `AnalyzerRegistry` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stdout]    --> src/query_set.rs:252:59
[INFO] [stdout]     |
[INFO] [stdout] 252 | ...                   return Some(k.clone());
[INFO] [stdout]     |                                    ^^^^^^^^ help: remove this redundant call
[INFO] [stdout]     |
[INFO] [stdout]     = note: the type `[u8]` does not implement `Clone`, so calling `clone` on `&[u8]` copies the reference, which does not do anything and can be removed
[INFO] [stdout]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 37 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.09s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: num-bigint v0.1.44, num-complex v0.1.43, num-rational v0.1.42
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] running `Command { std: "docker" "inspect" "f2e4f643e0fa362f3480bde2ee4bd2b29fa8efe0105eb63d213141474ee86a96", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f2e4f643e0fa362f3480bde2ee4bd2b29fa8efe0105eb63d213141474ee86a96", kill_on_drop: false }`
[INFO] [stdout] f2e4f643e0fa362f3480bde2ee4bd2b29fa8efe0105eb63d213141474ee86a96
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-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" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] acf0b9fd4bf5f09e3db69e1e0ddecc720665bdff99990d4e555560854800f046
[INFO] running `Command { std: "docker" "start" "-a" "acf0b9fd4bf5f09e3db69e1e0ddecc720665bdff99990d4e555560854800f046", kill_on_drop: false }`
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant `TF_IDF` should have an upper camel case name
[INFO] [stderr]  --> src/similarity.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     TF_IDF,
[INFO] [stderr]   |     ^^^^^^ help: convert the identifier to upper camel case: `TfIdf`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/analysis/filters/lowercase.rs:6:17
[INFO] [stderr]   |
[INFO] [stderr] 6 |     tokens: Box<Iterator<Item=Token> + 'a>,
[INFO] [stderr]   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: if this is an object-safe trait, use `dyn`
[INFO] [stderr]   |
[INFO] [stderr] 6 |     tokens: Box<dyn Iterator<Item=Token> + 'a>,
[INFO] [stderr]   |                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/analysis/filters/ngram.rs:9:17
[INFO] [stderr]   |
[INFO] [stderr] 9 |     tokens: Box<Iterator<Item=Token> + 'a>,
[INFO] [stderr]   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is an object-safe trait, use `dyn`
[INFO] [stderr]   |
[INFO] [stderr] 9 |     tokens: Box<dyn Iterator<Item=Token> + 'a>,
[INFO] [stderr]   |                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]  --> src/analysis/filters/asciifolding.rs:7:17
[INFO] [stderr]   |
[INFO] [stderr] 7 |     tokens: Box<Iterator<Item=Token> + 'a>,
[INFO] [stderr]   |                 ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]   = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is an object-safe trait, use `dyn`
[INFO] [stderr]   |
[INFO] [stderr] 7 |     tokens: Box<dyn Iterator<Item=Token> + 'a>,
[INFO] [stderr]   |                 +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/store/mod.rs:16:61
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn iter_terms(&'a self, field_name: &str) -> Option<Box<Iterator<Item=&'a [u8]> + 'a>>;
[INFO] [stderr]    |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is an object-safe trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn iter_terms(&'a self, field_name: &str) -> Option<Box<dyn Iterator<Item=&'a [u8]> + 'a>>;
[INFO] [stderr]    |                                                             +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/analysis/filters/lowercase.rs:11:28
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(tokens: Box<Iterator<Item=Token> +'a>) -> LowercaseFilter<'a> {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is an object-safe trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(tokens: Box<dyn Iterator<Item=Token> +'a>) -> LowercaseFilter<'a> {
[INFO] [stderr]    |                            +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/analysis/filters/ngram.rs:18:28
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn new(tokens: Box<Iterator<Item=Token> +'a >, min_size: usize, max_size: usize, edge: Edge) -> NGramFilter<'a> {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is an object-safe trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn new(tokens: Box<dyn Iterator<Item=Token> +'a >, min_size: usize, max_size: usize, edge: Edge) -> NGramFilter<'a> {
[INFO] [stderr]    |                            +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/analysis/filters/asciifolding.rs:12:28
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn new(tokens: Box<Iterator<Item=Token> +'a >) -> ASCIIFoldingFilter<'a> {
[INFO] [stderr]    |                            ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is an object-safe trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn new(tokens: Box<dyn Iterator<Item=Token> +'a >) -> ASCIIFoldingFilter<'a> {
[INFO] [stderr]    |                            +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/store/memory.rs:167:61
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn iter_terms(&'a self, field_name: &str) -> Option<Box<Iterator<Item=&'a [u8]> + 'a>> {
[INFO] [stderr]     |                                                             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is an object-safe trait, use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn iter_terms(&'a self, field_name: &str) -> Option<Box<dyn Iterator<Item=&'a [u8]> + 'a>> {
[INFO] [stderr]     |                                                             +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/analysis/tokenizers/mod.rs:22:57
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn initialise<'a>(&self, input: &'a str) -> Box<Iterator<Item=Token> + 'a> {
[INFO] [stderr]    |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is an object-safe trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 22 |     pub fn initialise<'a>(&self, input: &'a str) -> Box<dyn Iterator<Item=Token> + 'a> {
[INFO] [stderr]    |                                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/analysis/filters/mod.rs:25:45
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn initialise<'a>(&self, input: Box<Iterator<Item=Token> + 'a>) -> Box<Iterator<Item=Token> + 'a> {
[INFO] [stderr]    |                                             ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is an object-safe trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn initialise<'a>(&self, input: Box<dyn Iterator<Item=Token> + 'a>) -> Box<Iterator<Item=Token> + 'a> {
[INFO] [stderr]    |                                             +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/analysis/filters/mod.rs:25:80
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn initialise<'a>(&self, input: Box<Iterator<Item=Token> + 'a>) -> Box<Iterator<Item=Token> + 'a> {
[INFO] [stderr]    |                                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: if this is an object-safe trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn initialise<'a>(&self, input: Box<Iterator<Item=Token> + 'a>) -> Box<dyn Iterator<Item=Token> + 'a> {
[INFO] [stderr]    |                                                                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/analysis/tokenizers/standard.rs:28:18
[INFO] [stderr]    |
[INFO] [stderr] 28 |             Some(mut word) => {
[INFO] [stderr]    |                  ----^^^^
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/analysis/filters/ngram.rs:41:29
[INFO] [stderr]    |
[INFO] [stderr] 41 |                         let mut ngram_generator = NGramGenerator::new(&word, self.min_size, self.max_size, self.edge);
[INFO] [stderr]    |                             ----^^^^^^^^^^^^^^^
[INFO] [stderr]    |                             |
[INFO] [stderr]    |                             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/store/memory.rs:85:21
[INFO] [stderr]    |
[INFO] [stderr] 85 |                 let mut field = self.fields.get_mut(field_name).unwrap();
[INFO] [stderr]    |                     ----^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/store/memory.rs:95:21
[INFO] [stderr]    |
[INFO] [stderr] 95 |                 let mut term = field.terms.get_mut(&term_bytes).unwrap();
[INFO] [stderr]    |                     ----^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `scorer`
[INFO] [stderr]    --> src/query/mod.rs:123:64
[INFO] [stderr]     |
[INFO] [stderr] 123 |             Query::MatchTerm{ref field, ref term, ref matcher, ref scorer} => {
[INFO] [stderr]     |                                                                ^^^^^^^^^^ help: try ignoring the field: `scorer: _`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `boost`
[INFO] [stderr]    --> src/query/mod.rs:182:37
[INFO] [stderr]     |
[INFO] [stderr] 182 |             Query::Boost{ref query, boost} => {
[INFO] [stderr]     |                                     ^^^^^ help: try ignoring the field: `boost: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `scorer`
[INFO] [stderr]    --> src/query_set.rs:227:60
[INFO] [stderr]     |
[INFO] [stderr] 227 |         Query::MatchTerm{ref field, ref term, ref matcher, ref scorer} => {
[INFO] [stderr]     |                                                            ^^^^^^^^^^ help: try ignoring the field: `scorer: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `queries`
[INFO] [stderr]    --> src/query_set.rs:320:29
[INFO] [stderr]     |
[INFO] [stderr] 320 |         Query::NDisjunction{ref queries, minimum_should_match} => {
[INFO] [stderr]     |                             ^^^^^^^^^^^ help: try ignoring the field: `queries: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `minimum_should_match`
[INFO] [stderr]    --> src/query_set.rs:320:42
[INFO] [stderr]     |
[INFO] [stderr] 320 |         Query::NDisjunction{ref queries, minimum_should_match} => {
[INFO] [stderr]     |                                          ^^^^^^^^^^^^^^^^^^^^ help: try ignoring the field: `minimum_should_match: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `boost`
[INFO] [stderr]    --> src/query_set.rs:351:33
[INFO] [stderr]     |
[INFO] [stderr] 351 |         Query::Boost{ref query, boost} => {
[INFO] [stderr]     |                                 ^^^^^ help: try ignoring the field: `boost: _`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/request.rs:21:13
[INFO] [stderr]    |
[INFO] [stderr] 21 |         let mut iterator = build_iterator_from_query(index_reader, &self.query);
[INFO] [stderr]    |             ----^^^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: fields `tokenizers` and `filters` are never read
[INFO] [stderr]   --> src/analysis/registry.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct AnalyzerRegistry {
[INFO] [stderr]    |            ---------------- fields in this struct
[INFO] [stderr] 11 |     analyzers: HashMap<String, Analyzer>,
[INFO] [stderr] 12 |     tokenizers: HashMap<String, TokenizerSpec>,
[INFO] [stderr]    |     ^^^^^^^^^^
[INFO] [stderr] 13 |     filters: HashMap<String, FilterSpec>,
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `AnalyzerRegistry` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: call to `.clone()` on a reference in this situation does nothing
[INFO] [stderr]    --> src/query_set.rs:252:59
[INFO] [stderr]     |
[INFO] [stderr] 252 | ...                   return Some(k.clone());
[INFO] [stderr]     |                                    ^^^^^^^^ help: remove this redundant call
[INFO] [stderr]     |
[INFO] [stderr]     = note: the type `[u8]` does not implement `Clone`, so calling `clone` on `&[u8]` copies the reference, which does not do anything and can be removed
[INFO] [stderr]     = note: `#[warn(noop_method_call)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `term::Term`
[INFO] [stderr]    --> src/analysis/ngram_generator.rs:120:9
[INFO] [stderr]     |
[INFO] [stderr] 120 |     use term::Term;
[INFO] [stderr]     |         ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `token::Token`
[INFO] [stderr]    --> src/analysis/ngram_generator.rs:121:9
[INFO] [stderr]     |
[INFO] [stderr] 121 |     use token::Token;
[INFO] [stderr]     |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/analysis/filters/lowercase.rs:56:71
[INFO] [stderr]    |
[INFO] [stderr] 56 |         let token_filter = LowercaseFilter::new(Box::new(tokens.drain((..))));
[INFO] [stderr]    |                                                                       ^  ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 56 -         let token_filter = LowercaseFilter::new(Box::new(tokens.drain((..))));
[INFO] [stderr] 56 +         let token_filter = LowercaseFilter::new(Box::new(tokens.drain(..)));
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/analysis/filters/lowercase.rs:73:71
[INFO] [stderr]    |
[INFO] [stderr] 73 |         let token_filter = LowercaseFilter::new(Box::new(tokens.drain((..))));
[INFO] [stderr]    |                                                                       ^  ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 73 -         let token_filter = LowercaseFilter::new(Box::new(tokens.drain((..))));
[INFO] [stderr] 73 +         let token_filter = LowercaseFilter::new(Box::new(tokens.drain(..)));
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/analysis/filters/ngram.rs:74:67
[INFO] [stderr]    |
[INFO] [stderr] 74 |         let token_filter = NGramFilter::new(Box::new(tokens.drain((..))), 2, 3, Edge::Neither);
[INFO] [stderr]    |                                                                   ^  ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 74 -         let token_filter = NGramFilter::new(Box::new(tokens.drain((..))), 2, 3, Edge::Neither);
[INFO] [stderr] 74 +         let token_filter = NGramFilter::new(Box::new(tokens.drain(..)), 2, 3, Edge::Neither);
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/analysis/filters/ngram.rs:95:67
[INFO] [stderr]    |
[INFO] [stderr] 95 |         let token_filter = NGramFilter::new(Box::new(tokens.drain((..))), 2, 3, Edge::Left);
[INFO] [stderr]    |                                                                   ^  ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 95 -         let token_filter = NGramFilter::new(Box::new(tokens.drain((..))), 2, 3, Edge::Left);
[INFO] [stderr] 95 +         let token_filter = NGramFilter::new(Box::new(tokens.drain(..)), 2, 3, Edge::Left);
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/analysis/filters/ngram.rs:112:67
[INFO] [stderr]     |
[INFO] [stderr] 112 |         let token_filter = NGramFilter::new(Box::new(tokens.drain((..))), 2, 1000, Edge::Left);
[INFO] [stderr]     |                                                                   ^  ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 112 -         let token_filter = NGramFilter::new(Box::new(tokens.drain((..))), 2, 1000, Edge::Left);
[INFO] [stderr] 112 +         let token_filter = NGramFilter::new(Box::new(tokens.drain(..)), 2, 1000, Edge::Left);
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]    --> src/analysis/filters/ngram.rs:130:67
[INFO] [stderr]     |
[INFO] [stderr] 130 |         let token_filter = NGramFilter::new(Box::new(tokens.drain((..))), 2, 3, Edge::Right);
[INFO] [stderr]     |                                                                   ^  ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 130 -         let token_filter = NGramFilter::new(Box::new(tokens.drain((..))), 2, 3, Edge::Right);
[INFO] [stderr] 130 +         let token_filter = NGramFilter::new(Box::new(tokens.drain(..)), 2, 3, Edge::Right);
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/analysis/filters/asciifolding.rs:55:74
[INFO] [stderr]    |
[INFO] [stderr] 55 |         let token_filter = ASCIIFoldingFilter::new(Box::new(tokens.drain((..))));
[INFO] [stderr]    |                                                                          ^  ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 55 -         let token_filter = ASCIIFoldingFilter::new(Box::new(tokens.drain((..))));
[INFO] [stderr] 55 +         let token_filter = ASCIIFoldingFilter::new(Box::new(tokens.drain(..)));
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/analysis/filters/asciifolding.rs:70:74
[INFO] [stderr]    |
[INFO] [stderr] 70 |         let token_filter = ASCIIFoldingFilter::new(Box::new(tokens.drain((..))));
[INFO] [stderr]    |                                                                          ^  ^
[INFO] [stderr]    |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 70 -         let token_filter = ASCIIFoldingFilter::new(Box::new(tokens.drain((..))));
[INFO] [stderr] 70 +         let token_filter = ASCIIFoldingFilter::new(Box::new(tokens.drain(..)));
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `MemoryIndexStoreReader`
[INFO] [stderr]    --> src/store/memory.rs:237:35
[INFO] [stderr]     |
[INFO] [stderr] 237 |     use super::{MemoryIndexStore, MemoryIndexStoreReader};
[INFO] [stderr]     |                                   ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `abra` (lib) generated 27 warnings (run `cargo fix --lib -p abra` to apply 17 suggestions)
[INFO] [stderr] warning: `abra` (lib test) generated 37 warnings (26 duplicates) (run `cargo fix --lib -p abra --tests` to apply 11 suggestions)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: num-bigint v0.1.44, num-complex v0.1.43, num-rational v0.1.42
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 1`
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/abra-e5c4b31fb5f5f64e)
[INFO] [stdout] 
[INFO] [stdout] running 50 tests
[INFO] [stdout] test analysis::filters::asciifolding::tests::test_hiragana_not_changed ... ok
[INFO] [stdout] test analysis::filters::lowercase::tests::test_lowercase_filter_cjk ... ok
[INFO] [stdout] test analysis::filters::ngram::tests::test_ngram_filter ... ok
[INFO] [stdout] test analysis::lucene_asciifold::tests::test_hiragana_not_changed ... ok
[INFO] [stdout] test analysis::lucene_asciifold::tests::test_normalise_superscript ... ok
[INFO] [stdout] test analysis::filters::ngram::tests::test_edgengram_filter ... ok
[INFO] [stdout] test analysis::filters::ngram::tests::test_edgengram_filter_max_size ... ok
[INFO] [stdout] test analysis::filters::lowercase::tests::test_lowercase_filter ... ok
[INFO] [stdout] test analysis::filters::ngram::tests::test_edgengram_filter_right ... ok
[INFO] [stdout] test analysis::lucene_asciifold::tests::test_grapheme_clusters_keep ... ok
[INFO] [stdout] test analysis::lucene_asciifold::tests::test_normalise_width_variants ... ok
[INFO] [stdout] test analysis::filters::asciifolding::tests::test_simple ... ok
[INFO] [stdout] test analysis::tokenizers::ngram::tests::test_edgengram_tokenizer_max_size ... ok
[INFO] [stdout] test analysis::ngram_generator::tests::test_ngram_graphemes ... ok
[INFO] [stdout] test analysis::ngram_generator::tests::test_ngram_high_size ... ok
[INFO] [stdout] test analysis::tokenizers::ngram::tests::test_edgengram_tokenizer_right ... ok
[INFO] [stdout] test analysis::tokenizers::ngram::tests::test_ngram_tokenizer ... ok
[INFO] [stdout] test analysis::ngram_generator::tests::test_ngram_zero_size ... ok
[INFO] [stdout] test analysis::tokenizers::ngram::tests::test_edgengram_tokenizer ... ok
[INFO] [stdout] test analysis::ngram_generator::tests::test_ngram_left_edge ... ok
[INFO] [stdout] test analysis::ngram_generator::tests::test_ngram_right_edge ... ok
[INFO] [stdout] test analysis::lucene_asciifold::tests::test_simple ... ok
[INFO] [stdout] test analysis::ngram_generator::tests::test_ngram_cjk ... ok
[INFO] [stdout] test analysis::tokenizers::standard::tests::test_standard_tokenizer_cjk ... ok
[INFO] [stdout] test similarity::tests::test_tf_idf_total_tokens_doesnt_affect_score ... ok
[INFO] [stdout] test store::memory::tests::test_all_docs_iterator ... ok
[INFO] [stdout] test similarity::tests::test_tf_idf_higher_term_freq_increases_score ... ok
[INFO] [stdout] test similarity::tests::test_bm25_higher_total_tokens_increases_score ... ok
[INFO] [stdout] test similarity::tests::test_tf_idf_field_length_doesnt_affect_score ... ok
[INFO] [stdout] test similarity::tests::test_bm25_lower_term_docs_increases_score ... ok
[INFO] [stdout] test similarity::tests::test_bm25_higher_term_freq_increases_score ... ok
[INFO] [stdout] test analysis::tokenizers::standard::tests::test_standard_tokenizer ... ok
[INFO] [stdout] test similarity::tests::test_tf_idf_lower_term_docs_increases_score ... ok
[INFO] [stdout] test term::tests::test_boolean_false_to_bytes ... ok
[INFO] [stdout] test similarity::tests::test_bm25_lower_field_length_increases_score ... ok
[INFO] [stdout] test store::memory::tests::test_term_docs_iterator ... ok
[INFO] [stdout] test term::tests::test_blank_string_to_bytes ... ok
[INFO] [stdout] test analysis::ngram_generator::tests::test_ngram_blank_string ... ok
[INFO] [stdout] test analysis::ngram_generator::tests::test_ngram_invalid_size ... ok
[INFO] [stdout] test analysis::ngram_generator::tests::test_ngram ... ok
[INFO] [stdout] test store::memory::tests::test_num_docs ... ok
[INFO] [stdout] test term::tests::test_negative_i64_to_bytes ... ok
[INFO] [stdout] test term::tests::test_string_to_bytes ... ok
[INFO] [stdout] test term::tests::test_u64_to_bytes ... ok
[INFO] [stdout] test term::tests::test_boolean_true_to_bytes ... ok
[INFO] [stdout] test term::tests::test_hiragana_string_to_bytes ... ok
[INFO] [stdout] test term::tests::test_datetime_with_different_timezone_to_bytes ... ok
[INFO] [stdout] test term::tests::test_datetime_with_microseconds_to_bytes ... ok
[INFO] [stdout] test term::tests::test_datetime_to_bytes ... ok
[INFO] [stdout] test term::tests::test_i64_to_bytes ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 50 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.08s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests abra
[INFO] [stderr] warning: variant `TF_IDF` should have an upper camel case name
[INFO] [stderr]  --> src/similarity.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 |     TF_IDF,
[INFO] [stderr]   |     ^^^^^^ help: convert the identifier to upper camel case: `TfIdf`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 1 warning emitted
[INFO] [stderr] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "acf0b9fd4bf5f09e3db69e1e0ddecc720665bdff99990d4e555560854800f046", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "acf0b9fd4bf5f09e3db69e1e0ddecc720665bdff99990d4e555560854800f046", kill_on_drop: false }`
[INFO] [stdout] acf0b9fd4bf5f09e3db69e1e0ddecc720665bdff99990d4e555560854800f046
