[INFO] fetching crate divans 0.0.1...
[INFO] checking divans-0.0.1 against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] extracting crate divans 0.0.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate divans 0.0.1 on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking crates.io crate divans 0.0.1
[INFO] finished tweaking crates.io crate divans 0.0.1
[INFO] tweaked toml for crates.io crate divans 0.0.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a6feca0dfbcee3bd828ba11d73e1019e1e9fe9660626d531057c4d2687c9cebc
[INFO] running `"docker" "start" "-a" "a6feca0dfbcee3bd828ba11d73e1019e1e9fe9660626d531057c4d2687c9cebc"`
[INFO] [stderr]     Checking alloc-no-stdlib v1.3.0
[INFO] [stderr]    Compiling vergen v0.1.1
[INFO] [stderr]     Checking brotli-decompressor v1.3.1
[INFO] [stderr]    Compiling divans v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking brotli v2.5.1
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/probability/common_tests.rs:174:40
[INFO] [stderr]     |
[INFO] [stderr] 174 |     let threequarters = half + quarter;;
[INFO] [stderr]     |                                        ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolon)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reader.rs:24:32
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn cause(&self) -> Option<&error::Error> {None}
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]    --> src/probability/common_tests.rs:174:40
[INFO] [stderr]     |
[INFO] [stderr] 174 |     let threequarters = half + quarter;;
[INFO] [stderr]     |                                        ^ help: remove this semicolon
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(redundant_semicolon)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/reader.rs:24:32
[INFO] [stderr]    |
[INFO] [stderr] 24 |     fn cause(&self) -> Option<&error::Error> {None}
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/codec/copy.rs:91:25
[INFO] [stderr]    |
[INFO] [stderr] 91 |                     let mut nibble_prob = superstate.bk.copy_priors.get(
[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/codec/copy.rs:112:25
[INFO] [stderr]     |
[INFO] [stderr] 112 |                     let mut nibble_prob = superstate.bk.copy_priors.get(
[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/codec/copy.rs:129:25
[INFO] [stderr]     |
[INFO] [stderr] 129 |                     let mut nibble_prob = superstate.bk.copy_priors.get(
[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/codec/copy.rs:145:25
[INFO] [stderr]     |
[INFO] [stderr] 145 |                     let mut nibble_prob = superstate.bk.copy_priors.get(
[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/codec/copy.rs:175:29
[INFO] [stderr]     |
[INFO] [stderr] 175 |                         let mut nibble_prob = superstate.bk.copy_priors.get(
[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/codec/copy.rs:204:25
[INFO] [stderr]     |
[INFO] [stderr] 204 |                     let mut nibble_prob = superstate.bk.copy_priors.get(
[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/codec/copy.rs:231:25
[INFO] [stderr]     |
[INFO] [stderr] 231 |                     let mut nibble_prob = superstate.bk.copy_priors.get(
[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/codec/copy.rs:250:33
[INFO] [stderr]     |
[INFO] [stderr] 250 | ...                   let mut nibble_prob = superstate.bk.copy_priors.get(
[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/codec/dict.rs:84:25
[INFO] [stderr]    |
[INFO] [stderr] 84 |                     let mut nibble_prob = superstate.bk.dict_priors.get(DictCommandNibblePriorType::SizeBegNib, (ctype,));
[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/codec/dict.rs:100:25
[INFO] [stderr]     |
[INFO] [stderr] 100 |                     let mut nibble_prob = superstate.bk.dict_priors.get(DictCommandNibblePriorType::SizeLastNib, (ctype,));
[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/codec/dict.rs:119:25
[INFO] [stderr]     |
[INFO] [stderr] 119 |                     let mut nibble_prob = superstate.bk.dict_priors.get(
[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/codec/dict.rs:139:25
[INFO] [stderr]     |
[INFO] [stderr] 139 |                     let mut nibble_prob = superstate.bk.dict_priors.get(DictCommandNibblePriorType::Transform,
[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/codec/dict.rs:150:25
[INFO] [stderr]     |
[INFO] [stderr] 150 |                     let mut nibble_prob = superstate.bk.dict_priors.get(DictCommandNibblePriorType::Transform,
[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/codec/literal.rs:294:16
[INFO] [stderr]     |
[INFO] [stderr] 294 |            let mut byte_to_encode_val = specialization.get_literal_byte(in_cmd,
[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/codec/literal.rs:572:25
[INFO] [stderr]     |
[INFO] [stderr] 572 |                     let mut nibble_prob = superstate.bk.lit_len_priors.get(
[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/codec/literal.rs:600:25
[INFO] [stderr]     |
[INFO] [stderr] 600 |                     let mut nibble_prob = superstate.bk.lit_len_priors.get(LiteralCommandPriorType::SizeBegNib, (ctype,));
[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/codec/literal.rs:625:25
[INFO] [stderr]     |
[INFO] [stderr] 625 |                     let mut nibble_prob = superstate.bk.lit_len_priors.get(LiteralCommandPriorType::SizeLastNib, (ctype,));
[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/codec/literal.rs:640:25
[INFO] [stderr]     |
[INFO] [stderr] 640 |                     let mut nibble_prob = superstate.bk.lit_len_priors.get(LiteralCommandPriorType::SizeMantissaNib, (ctype,));
[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/codec/literal.rs:707:30
[INFO] [stderr]     |
[INFO] [stderr] 707 |                         Some(mut lc) => {
[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/codec/context_map.rs:174:28
[INFO] [stderr]     |
[INFO] [stderr] 174 |                        let mut nibble_prob = superstate.bk.prediction_priors.get(PredictionModePriorType::Only, (0,));
[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/codec/context_map.rs:195:28
[INFO] [stderr]     |
[INFO] [stderr] 195 |                        let mut nibble_prob = superstate.bk.prediction_priors.get(
[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/codec/context_map.rs:211:28
[INFO] [stderr]     |
[INFO] [stderr] 211 |                        let mut nibble_prob = superstate.bk.prediction_priors.get(
[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/codec/context_map.rs:235:24
[INFO] [stderr]     |
[INFO] [stderr] 235 |                    let mut nibble_prob = superstate.bk.prediction_priors.get(PredictionModePriorType::ContextMapSpeedPalette,
[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/codec/context_map.rs:291:28
[INFO] [stderr]     |
[INFO] [stderr] 291 |                        let mut nibble_prob = superstate.bk.prediction_priors.get(PredictionModePriorType::Mnemonic, (context_map_type as usize,));
[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/codec/context_map.rs:320:28
[INFO] [stderr]     |
[INFO] [stderr] 320 |                        let mut out_context_map = match context_map_type {
[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/codec/context_map.rs:343:24
[INFO] [stderr]     |
[INFO] [stderr] 343 |                    let mut nibble_prob = superstate.bk.prediction_priors.get(PredictionModePriorType::FirstNibble, (context_map_type as usize,));
[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/codec/context_map.rs:363:28
[INFO] [stderr]     |
[INFO] [stderr] 363 |                        let mut nibble_prob = superstate.bk.prediction_priors.get(PredictionModePriorType::SecondNibble, (context_map_type as usize,));
[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/codec/context_map.rs:371:24
[INFO] [stderr]     |
[INFO] [stderr] 371 |                    let mut out_context_map = match context_map_type {
[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/codec/context_map.rs:395:24
[INFO] [stderr]     |
[INFO] [stderr] 395 |                    let mut prior = if index >= 256 && self.pm.has_context_speeds() {
[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/codec/context_map.rs:401:28
[INFO] [stderr]     |
[INFO] [stderr] 401 |                        let mut nibble_prob = superstate.bk.prediction_priors.get(
[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/codec/block_type.rs:72:25
[INFO] [stderr]    |
[INFO] [stderr] 72 |                     let mut nibble_prob = superstate.bk.btype_priors.get(BlockTypePriorType::Mnemonic,
[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/codec/block_type.rs:88:25
[INFO] [stderr]    |
[INFO] [stderr] 88 |                     let mut nibble_prob = superstate.bk.btype_priors.get(BlockTypePriorType::FirstNibble,
[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/codec/block_type.rs:97:25
[INFO] [stderr]    |
[INFO] [stderr] 97 |                     let mut nibble_prob = superstate.bk.btype_priors.get(BlockTypePriorType::SecondNibble,
[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/codec/block_type.rs:181:25
[INFO] [stderr]     |
[INFO] [stderr] 181 |                     let mut nibble_prob = superstate.bk.btype_priors.get(BlockTypePriorType::StrideNibble,
[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/ir_optimize/mod.rs:198:21
[INFO] [stderr]     |
[INFO] [stderr] 198 |                 let mut should_merge = match should_merge(lit, copy, index, mb, &mut actuary, &mut distance_cache) {
[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/mux.rs:463:20
[INFO] [stderr]     |
[INFO] [stderr] 463 |                let mut is_lagging = max_flush  > MAX_FLUSH_VARIANCE + self.last_flush[index];
[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/codec/copy.rs:91:25
[INFO] [stderr]    |
[INFO] [stderr] 91 |                     let mut nibble_prob = superstate.bk.copy_priors.get(
[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/codec/copy.rs:112:25
[INFO] [stderr]     |
[INFO] [stderr] 112 |                     let mut nibble_prob = superstate.bk.copy_priors.get(
[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/codec/copy.rs:129:25
[INFO] [stderr]     |
[INFO] [stderr] 129 |                     let mut nibble_prob = superstate.bk.copy_priors.get(
[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/codec/copy.rs:145:25
[INFO] [stderr]     |
[INFO] [stderr] 145 |                     let mut nibble_prob = superstate.bk.copy_priors.get(
[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/codec/copy.rs:175:29
[INFO] [stderr]     |
[INFO] [stderr] 175 |                         let mut nibble_prob = superstate.bk.copy_priors.get(
[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/codec/copy.rs:204:25
[INFO] [stderr]     |
[INFO] [stderr] 204 |                     let mut nibble_prob = superstate.bk.copy_priors.get(
[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/codec/copy.rs:231:25
[INFO] [stderr]     |
[INFO] [stderr] 231 |                     let mut nibble_prob = superstate.bk.copy_priors.get(
[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/codec/copy.rs:250:33
[INFO] [stderr]     |
[INFO] [stderr] 250 | ...                   let mut nibble_prob = superstate.bk.copy_priors.get(
[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/codec/dict.rs:84:25
[INFO] [stderr]    |
[INFO] [stderr] 84 |                     let mut nibble_prob = superstate.bk.dict_priors.get(DictCommandNibblePriorType::SizeBegNib, (ctype,));
[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/codec/dict.rs:100:25
[INFO] [stderr]     |
[INFO] [stderr] 100 |                     let mut nibble_prob = superstate.bk.dict_priors.get(DictCommandNibblePriorType::SizeLastNib, (ctype,));
[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/codec/dict.rs:119:25
[INFO] [stderr]     |
[INFO] [stderr] 119 |                     let mut nibble_prob = superstate.bk.dict_priors.get(
[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/codec/dict.rs:139:25
[INFO] [stderr]     |
[INFO] [stderr] 139 |                     let mut nibble_prob = superstate.bk.dict_priors.get(DictCommandNibblePriorType::Transform,
[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/codec/dict.rs:150:25
[INFO] [stderr]     |
[INFO] [stderr] 150 |                     let mut nibble_prob = superstate.bk.dict_priors.get(DictCommandNibblePriorType::Transform,
[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/codec/literal.rs:294:16
[INFO] [stderr]     |
[INFO] [stderr] 294 |            let mut byte_to_encode_val = specialization.get_literal_byte(in_cmd,
[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/codec/literal.rs:572:25
[INFO] [stderr]     |
[INFO] [stderr] 572 |                     let mut nibble_prob = superstate.bk.lit_len_priors.get(
[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/codec/literal.rs:600:25
[INFO] [stderr]     |
[INFO] [stderr] 600 |                     let mut nibble_prob = superstate.bk.lit_len_priors.get(LiteralCommandPriorType::SizeBegNib, (ctype,));
[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/codec/literal.rs:625:25
[INFO] [stderr]     |
[INFO] [stderr] 625 |                     let mut nibble_prob = superstate.bk.lit_len_priors.get(LiteralCommandPriorType::SizeLastNib, (ctype,));
[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/codec/literal.rs:640:25
[INFO] [stderr]     |
[INFO] [stderr] 640 |                     let mut nibble_prob = superstate.bk.lit_len_priors.get(LiteralCommandPriorType::SizeMantissaNib, (ctype,));
[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/codec/literal.rs:707:30
[INFO] [stderr]     |
[INFO] [stderr] 707 |                         Some(mut lc) => {
[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/codec/context_map.rs:174:28
[INFO] [stderr]     |
[INFO] [stderr] 174 |                        let mut nibble_prob = superstate.bk.prediction_priors.get(PredictionModePriorType::Only, (0,));
[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/codec/context_map.rs:195:28
[INFO] [stderr]     |
[INFO] [stderr] 195 |                        let mut nibble_prob = superstate.bk.prediction_priors.get(
[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/codec/context_map.rs:211:28
[INFO] [stderr]     |
[INFO] [stderr] 211 |                        let mut nibble_prob = superstate.bk.prediction_priors.get(
[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/codec/context_map.rs:235:24
[INFO] [stderr]     |
[INFO] [stderr] 235 |                    let mut nibble_prob = superstate.bk.prediction_priors.get(PredictionModePriorType::ContextMapSpeedPalette,
[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/codec/context_map.rs:291:28
[INFO] [stderr]     |
[INFO] [stderr] 291 |                        let mut nibble_prob = superstate.bk.prediction_priors.get(PredictionModePriorType::Mnemonic, (context_map_type as usize,));
[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/codec/context_map.rs:320:28
[INFO] [stderr]     |
[INFO] [stderr] 320 |                        let mut out_context_map = match context_map_type {
[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/codec/context_map.rs:343:24
[INFO] [stderr]     |
[INFO] [stderr] 343 |                    let mut nibble_prob = superstate.bk.prediction_priors.get(PredictionModePriorType::FirstNibble, (context_map_type as usize,));
[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/codec/context_map.rs:363:28
[INFO] [stderr]     |
[INFO] [stderr] 363 |                        let mut nibble_prob = superstate.bk.prediction_priors.get(PredictionModePriorType::SecondNibble, (context_map_type as usize,));
[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/codec/context_map.rs:371:24
[INFO] [stderr]     |
[INFO] [stderr] 371 |                    let mut out_context_map = match context_map_type {
[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/codec/context_map.rs:395:24
[INFO] [stderr]     |
[INFO] [stderr] 395 |                    let mut prior = if index >= 256 && self.pm.has_context_speeds() {
[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/codec/context_map.rs:401:28
[INFO] [stderr]     |
[INFO] [stderr] 401 |                        let mut nibble_prob = superstate.bk.prediction_priors.get(
[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/codec/block_type.rs:72:25
[INFO] [stderr]    |
[INFO] [stderr] 72 |                     let mut nibble_prob = superstate.bk.btype_priors.get(BlockTypePriorType::Mnemonic,
[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/codec/block_type.rs:88:25
[INFO] [stderr]    |
[INFO] [stderr] 88 |                     let mut nibble_prob = superstate.bk.btype_priors.get(BlockTypePriorType::FirstNibble,
[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/codec/block_type.rs:97:25
[INFO] [stderr]    |
[INFO] [stderr] 97 |                     let mut nibble_prob = superstate.bk.btype_priors.get(BlockTypePriorType::SecondNibble,
[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/codec/block_type.rs:181:25
[INFO] [stderr]     |
[INFO] [stderr] 181 |                     let mut nibble_prob = superstate.bk.btype_priors.get(BlockTypePriorType::StrideNibble,
[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/test_ans.rs:215:17
[INFO] [stderr]     |
[INFO] [stderr] 215 |             let mut q = e.get_internal_buffer_mut();
[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/test_ans.rs:237:13
[INFO] [stderr]     |
[INFO] [stderr] 237 |         let mut q = e.get_internal_buffer_mut();
[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/test_ans.rs:317:17
[INFO] [stderr]     |
[INFO] [stderr] 317 |             let mut q = d.get_internal_buffer_mut();
[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/test_ans.rs:338:13
[INFO] [stderr]     |
[INFO] [stderr] 338 |         let mut q = d.get_internal_buffer_mut();
[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/test_ans.rs:380:17
[INFO] [stderr]     |
[INFO] [stderr] 380 |             let mut q = e.get_internal_buffer_mut();
[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/test_ans.rs:443:17
[INFO] [stderr]     |
[INFO] [stderr] 443 |             let mut q = d.get_internal_buffer_mut();
[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/ir_optimize/mod.rs:198:21
[INFO] [stderr]     |
[INFO] [stderr] 198 |                 let mut should_merge = match should_merge(lit, copy, index, mb, &mut actuary, &mut distance_cache) {
[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/mux.rs:463:20
[INFO] [stderr]     |
[INFO] [stderr] 463 |                let mut is_lagging = max_flush  > MAX_FLUSH_VARIANCE + self.last_flush[index];
[INFO] [stderr]     |                    ----^^^^^^^^^^
[INFO] [stderr]     |                    |
[INFO] [stderr]     |                    help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/bin/divans.rs:455:20
[INFO] [stderr]     |
[INFO] [stderr] 455 |         let data = try!(util::literal_slice_to_vec(&s.as_bytes()[command_vec[0].len() + command_vec[1].len() + 2..]));
[INFO] [stderr]     |                    ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/bin/divans.rs:457:24
[INFO] [stderr]     |
[INFO] [stderr] 457 |             let prob = try!(util::hex_slice_to_vec(command_vec[3].as_bytes()));
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/bin/divans.rs:659:21
[INFO] [stderr]     |
[INFO] [stderr] 659 |                     try!(recode_cmd_buffer(&mut state, ibuffer.split_at(i_read_index).0, w,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/bin/divans.rs:671:23
[INFO] [stderr]     |
[INFO] [stderr] 671 |                 match try!(command_parse(&line)) {
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/bin/divans.rs:956:31
[INFO] [stderr]     |
[INFO] [stderr] 956 |                 window_size = try!(window_parse(&line));
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/bin/divans.rs:103:32
[INFO] [stderr]     |
[INFO] [stderr] 103 |     fn cause(&self) -> Option<&error::Error> {None}
[INFO] [stderr]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/bin/divans.rs:718:63
[INFO] [stderr]     |
[INFO] [stderr] 718 | ...                   free_state: &mut Fn(Compressor)->ItemVecAllocator<u8>) -> io::Result<()> {
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Compressor)->ItemVecAllocator<u8>`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]     --> src/bin/divans.rs:1013:46
[INFO] [stderr]      |
[INFO] [stderr] 1013 |     let mut obuffer = vec![0u8; buffer_size];;
[INFO] [stderr]      |                                              ^ help: remove this semicolon
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(redundant_semicolon)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> examples/util_prior_stream_cost.rs:37:21
[INFO] [stderr]    |
[INFO] [stderr] 37 |                 let mut prior_val: Vec<String> = if let Some(_) = line.find(",") {
[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]   --> examples/util_prior_stream_cost.rs:65:21
[INFO] [stderr]    |
[INFO] [stderr] 65 |                 let mut prior_stream = &mut sub_streams.entry(prior).or_insert(vec::Vec::<u8>::new());
[INFO] [stderr]    |                     ----^^^^^^^^^^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]   --> src/bin/integration_test.rs:71:3
[INFO] [stderr]    |
[INFO] [stderr] 71 |   try!(super::recode(&mut brotli_file,
[INFO] [stderr]    |   ^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/bin/divans.rs:455:20
[INFO] [stderr]     |
[INFO] [stderr] 455 |         let data = try!(util::literal_slice_to_vec(&s.as_bytes()[command_vec[0].len() + command_vec[1].len() + 2..]));
[INFO] [stderr]     |                    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/bin/divans.rs:457:24
[INFO] [stderr]     |
[INFO] [stderr] 457 |             let prob = try!(util::hex_slice_to_vec(command_vec[3].as_bytes()));
[INFO] [stderr]     |                        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/bin/divans.rs:659:21
[INFO] [stderr]     |
[INFO] [stderr] 659 |                     try!(recode_cmd_buffer(&mut state, ibuffer.split_at(i_read_index).0, w,
[INFO] [stderr]     |                     ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/bin/divans.rs:671:23
[INFO] [stderr]     |
[INFO] [stderr] 671 |                 match try!(command_parse(&line)) {
[INFO] [stderr]     |                       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'try': use the `?` operator instead
[INFO] [stderr]    --> src/bin/divans.rs:956:31
[INFO] [stderr]     |
[INFO] [stderr] 956 |                 window_size = try!(window_parse(&line));
[INFO] [stderr]     |                               ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/bin/divans.rs:103:32
[INFO] [stderr]     |
[INFO] [stderr] 103 |     fn cause(&self) -> Option<&error::Error> {None}
[INFO] [stderr]     |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/bin/divans.rs:718:63
[INFO] [stderr]     |
[INFO] [stderr] 718 | ...                   free_state: &mut Fn(Compressor)->ItemVecAllocator<u8>) -> io::Result<()> {
[INFO] [stderr]     |                                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Compressor)->ItemVecAllocator<u8>`
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary trailing semicolon
[INFO] [stderr]     --> src/bin/divans.rs:1013:46
[INFO] [stderr]      |
[INFO] [stderr] 1013 |     let mut obuffer = vec![0u8; buffer_size];;
[INFO] [stderr]      |                                              ^ help: remove this semicolon
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(redundant_semicolon)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.84s
[INFO] running `"docker" "inspect" "a6feca0dfbcee3bd828ba11d73e1019e1e9fe9660626d531057c4d2687c9cebc"`
[INFO] running `"docker" "rm" "-f" "a6feca0dfbcee3bd828ba11d73e1019e1e9fe9660626d531057c4d2687c9cebc"`
[INFO] [stdout] a6feca0dfbcee3bd828ba11d73e1019e1e9fe9660626d531057c4d2687c9cebc