[INFO] updating cached repository PavelZaytsev/sstable
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/PavelZaytsev/sstable
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/PavelZaytsev/sstable" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/PavelZaytsev/sstable"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/PavelZaytsev/sstable'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/PavelZaytsev/sstable" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/PavelZaytsev/sstable"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/PavelZaytsev/sstable'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ca83b55f1eba71784f4e39e30facef1edf93242c
[INFO] sha for GitHub repo PavelZaytsev/sstable: ca83b55f1eba71784f4e39e30facef1edf93242c
[INFO] validating manifest of PavelZaytsev/sstable on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of PavelZaytsev/sstable on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing PavelZaytsev/sstable
[INFO] finished frobbing PavelZaytsev/sstable
[INFO] frobbed toml for PavelZaytsev/sstable written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/PavelZaytsev/sstable/Cargo.toml
[INFO] started frobbing PavelZaytsev/sstable
[INFO] finished frobbing PavelZaytsev/sstable
[INFO] frobbed toml for PavelZaytsev/sstable written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/PavelZaytsev/sstable/Cargo.toml
[INFO] crate PavelZaytsev/sstable already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking PavelZaytsev/sstable against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-3/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/PavelZaytsev/sstable:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 79240a5a7bef1fb573c9c481f5391f9cd320a15459c943b1ead87d38b901f54b
[INFO] running `"docker" "start" "-a" "79240a5a7bef1fb573c9c481f5391f9cd320a15459c943b1ead87d38b901f54b"`
[INFO] [stderr]    Compiling rand v0.6.5
[INFO] [stderr]    Compiling num-traits v0.2.7
[INFO] [stderr]     Checking wait-timeout v0.2.0
[INFO] [stderr]     Checking serde v1.0.91
[INFO] [stderr]     Checking tempfile v3.0.8
[INFO] [stderr]     Checking rusty-fork v0.2.2
[INFO] [stderr]     Checking proptest v0.9.4
[INFO] [stderr]     Checking bincode v1.1.3
[INFO] [stderr]     Checking sstable v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fs::File;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/streamlog.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/streamlog.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error`
[INFO] [stderr]  --> src/streamlog.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::error;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::hash::Hash`
[INFO] [stderr]  --> src/streamlog.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::hash::Hash;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::Eq`
[INFO] [stderr]  --> src/streamlog.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::cmp::Eq;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/streamlog.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::streamlog::errors::IndexError`
[INFO] [stderr]   --> src/streamlog.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use crate::streamlog::errors::IndexError;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Deserialize`, `de`
[INFO] [stderr]   --> src/streamlog.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 | use serde::{de, Serialize, Deserialize};
[INFO] [stderr]    |             ^^             ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `deserialize`, `serialize`
[INFO] [stderr]   --> src/streamlog.rs:18:15
[INFO] [stderr]    |
[INFO] [stderr] 18 | use bincode::{serialize, deserialize};
[INFO] [stderr]    |               ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `streamlog::FileSegment`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use streamlog::FileSegment;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `deserialize`, `serialize`
[INFO] [stderr]  --> src/main.rs:6:15
[INFO] [stderr]   |
[INFO] [stderr] 6 | use bincode::{serialize, deserialize};
[INFO] [stderr]   |               ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Deserialize`, `Serialize`
[INFO] [stderr]  --> src/main.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 | use serde::{Serialize, Deserialize};
[INFO] [stderr]   |             ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::BufWriter`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::io::BufWriter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Empty`, `Node`
[INFO] [stderr]  --> src/main.rs:9:37
[INFO] [stderr]   |
[INFO] [stderr] 9 | use rbt::red_black_tree::NodeType::{Node, Empty};
[INFO] [stderr]   |                                     ^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rbt::red_black_tree::RBT`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use rbt::red_black_tree::RBT;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::borrow::Borrow`
[INFO] [stderr]  --> src/rbt.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     use core::borrow::Borrow;
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/rbt.rs:112:34
[INFO] [stderr]     |
[INFO] [stderr] 112 |                         (Rc::new((NodeType::path_copy_node(left))), Rc::new(right.add(my_key, my_value)))
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::slice::Iter`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::slice::Iter;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::rc::Rc;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `current_size`
[INFO] [stderr]   --> src/streamlog.rs:69:30
[INFO] [stderr]    |
[INFO] [stderr] 69 |             Memtable { tree, current_size } => {
[INFO] [stderr]    |                              ^^^^^^^^^^^^ help: try ignoring the field: `current_size: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tree`
[INFO] [stderr]   --> src/streamlog.rs:76:27
[INFO] [stderr]    |
[INFO] [stderr] 76 |             SparseIndex { tree, segment: our_segment, limit, index_size_ratio } =>
[INFO] [stderr]    |                           ^^^^ help: try ignoring the field: `tree: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `current_size`
[INFO] [stderr]   --> src/streamlog.rs:97:30
[INFO] [stderr]    |
[INFO] [stderr] 97 |             Memtable { tree, current_size } => tree.find(key),
[INFO] [stderr]    |                              ^^^^^^^^^^^^ help: try ignoring the field: `current_size: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index_size_ratio`
[INFO] [stderr]   --> src/streamlog.rs:98:49
[INFO] [stderr]    |
[INFO] [stderr] 98 |             SparseIndex { tree, segment, limit, index_size_ratio } => {
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^ help: try ignoring the field: `index_size_ratio: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `limit`
[INFO] [stderr]   --> src/streamlog.rs:98:42
[INFO] [stderr]    |
[INFO] [stderr] 98 |             SparseIndex { tree, segment, limit, index_size_ratio } => {
[INFO] [stderr]    |                                          ^^^^^ help: try ignoring the field: `limit: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `segment`
[INFO] [stderr]   --> src/streamlog.rs:98:33
[INFO] [stderr]    |
[INFO] [stderr] 98 |             SparseIndex { tree, segment, limit, index_size_ratio } => {
[INFO] [stderr]    |                                 ^^^^^^^ help: try ignoring the field: `segment: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color`
[INFO] [stderr]    --> src/streamlog.rs:144:45
[INFO] [stderr]     |
[INFO] [stderr] 144 |             Node { key, value, left, right, color } => {
[INFO] [stderr]     |                                             ^^^^^ help: try ignoring the field: `color: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color1`
[INFO] [stderr]    --> src/rbt.rs:262:32
[INFO] [stderr]     |
[INFO] [stderr] 262 |                         color: color1
[INFO] [stderr]     |                                ^^^^^^ help: consider prefixing with an underscore: `_color1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color2`
[INFO] [stderr]    --> src/rbt.rs:269:36
[INFO] [stderr]     |
[INFO] [stderr] 269 |                             color: color2
[INFO] [stderr]     |                                    ^^^^^^ help: consider prefixing with an underscore: `_color2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key_left`
[INFO] [stderr]    --> src/rbt.rs:117:38
[INFO] [stderr]     |
[INFO] [stderr] 117 |                         (Node { key: key_left, value: value_left, left: lefts_left, right: lefts_right, color: lefts_color },
[INFO] [stderr]     |                                      ^^^^^^^^ help: consider prefixing with an underscore: `_key_left`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key_right`
[INFO] [stderr]    --> src/rbt.rs:118:41
[INFO] [stderr]     |
[INFO] [stderr] 118 |                             Node { key: key_right, value: value_right, left: rights_left, right: rights_right, color: rights_color }) => {
[INFO] [stderr]     |                                         ^^^^^^^^^ help: consider prefixing with an underscore: `_key_right`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lefts_right`
[INFO] [stderr]    --> src/rbt.rs:117:92
[INFO] [stderr]     |
[INFO] [stderr] 117 |                         (Node { key: key_left, value: value_left, left: lefts_left, right: lefts_right, color: lefts_color },
[INFO] [stderr]     |                                                                                            ^^^^^^^^^^^ help: consider prefixing with an underscore: `_lefts_right`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rights_left`
[INFO] [stderr]    --> src/rbt.rs:118:78
[INFO] [stderr]     |
[INFO] [stderr] 118 |                             Node { key: key_right, value: value_right, left: rights_left, right: rights_right, color: rights_color }) => {
[INFO] [stderr]     |                                                                              ^^^^^^^^^^^ help: consider prefixing with an underscore: `_rights_left`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rights_right`
[INFO] [stderr]    --> src/rbt.rs:118:98
[INFO] [stderr]     |
[INFO] [stderr] 118 |                             Node { key: key_right, value: value_right, left: rights_left, right: rights_right, color: rights_color }) => {
[INFO] [stderr]     |                                                                                                  ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_rights_right`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value_left`
[INFO] [stderr]    --> src/rbt.rs:117:55
[INFO] [stderr]     |
[INFO] [stderr] 117 |                         (Node { key: key_left, value: value_left, left: lefts_left, right: lefts_right, color: lefts_color },
[INFO] [stderr]     |                                                       ^^^^^^^^^^ help: consider prefixing with an underscore: `_value_left`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value_right`
[INFO] [stderr]    --> src/rbt.rs:118:59
[INFO] [stderr]     |
[INFO] [stderr] 118 |                             Node { key: key_right, value: value_right, left: rights_left, right: rights_right, color: rights_color }) => {
[INFO] [stderr]     |                                                           ^^^^^^^^^^^ help: consider prefixing with an underscore: `_value_right`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key_left`
[INFO] [stderr]    --> src/rbt.rs:134:38
[INFO] [stderr]     |
[INFO] [stderr] 134 |                         (Node { key: key_left, value: value_left, left: lefts_left, right: lefts_right, color: lefts_color }, Empty) => {
[INFO] [stderr]     |                                      ^^^^^^^^ help: consider prefixing with an underscore: `_key_left`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lefts_right`
[INFO] [stderr]    --> src/rbt.rs:134:92
[INFO] [stderr]     |
[INFO] [stderr] 134 |                         (Node { key: key_left, value: value_left, left: lefts_left, right: lefts_right, color: lefts_color }, Empty) => {
[INFO] [stderr]     |                                                                                            ^^^^^^^^^^^ help: consider prefixing with an underscore: `_lefts_right`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value_left`
[INFO] [stderr]    --> src/rbt.rs:134:55
[INFO] [stderr]     |
[INFO] [stderr] 134 |                         (Node { key: key_left, value: value_left, left: lefts_left, right: lefts_right, color: lefts_color }, Empty) => {
[INFO] [stderr]     |                                                       ^^^^^^^^^^ help: consider prefixing with an underscore: `_value_left`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key_right`
[INFO] [stderr]    --> src/rbt.rs:146:45
[INFO] [stderr]     |
[INFO] [stderr] 146 |                         (Empty, Node { key: key_right, value: value_right, left: rights_left, right: rights_right, color: rights_color }) => {
[INFO] [stderr]     |                                             ^^^^^^^^^ help: consider prefixing with an underscore: `_key_right`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rights_left`
[INFO] [stderr]    --> src/rbt.rs:146:82
[INFO] [stderr]     |
[INFO] [stderr] 146 |                         (Empty, Node { key: key_right, value: value_right, left: rights_left, right: rights_right, color: rights_color }) => {
[INFO] [stderr]     |                                                                                  ^^^^^^^^^^^ help: consider prefixing with an underscore: `_rights_left`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rights_right`
[INFO] [stderr]    --> src/rbt.rs:146:102
[INFO] [stderr]     |
[INFO] [stderr] 146 |                         (Empty, Node { key: key_right, value: value_right, left: rights_left, right: rights_right, color: rights_color }) => {
[INFO] [stderr]     |                                                                                                      ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_rights_right`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value_right`
[INFO] [stderr]    --> src/rbt.rs:146:63
[INFO] [stderr]     |
[INFO] [stderr] 146 |                         (Empty, Node { key: key_right, value: value_right, left: rights_left, right: rights_right, color: rights_color }) => {
[INFO] [stderr]     |                                                               ^^^^^^^^^^^ help: consider prefixing with an underscore: `_value_right`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/rbt.rs:165:29
[INFO] [stderr]     |
[INFO] [stderr] 165 |                 Node { key, value, left, right, .. } => {
[INFO] [stderr]     |                             ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `right`
[INFO] [stderr]    --> src/rbt.rs:215:42
[INFO] [stderr]     |
[INFO] [stderr] 215 |                 Node { key, value, left, right, color } => {
[INFO] [stderr]     |                                          ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `left`
[INFO] [stderr]    --> src/rbt.rs:224:36
[INFO] [stderr]     |
[INFO] [stderr] 224 |                 Node { key, value, left, right, color } => {
[INFO] [stderr]     |                                    ^^^^ help: try ignoring the field: `left: _`
[INFO] [stderr] 
[INFO] [stderr] warning: private type `streamlog::SparseIndexEntry` in public interface (error E0446)
[INFO] [stderr]   --> src/streamlog.rs:56:19
[INFO] [stderr]    |
[INFO] [stderr] 56 |     SparseIndex { tree: RBT<K, SparseIndexEntry>, segment: S, limit: u8, index_size_ratio: f32 },
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `name`
[INFO] [stderr]   --> src/streamlog.rs:46:5
[INFO] [stderr]    |
[INFO] [stderr] 46 |     name: String,
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `SSTableObject`
[INFO] [stderr]   --> src/streamlog.rs:52:1
[INFO] [stderr]    |
[INFO] [stderr] 52 | / pub enum SSTableObject<K: Copy + Clone + Serialize + PartialOrd + DeserializeOwned + PartialEq,
[INFO] [stderr] 53 | |     V: Copy + Clone + Serialize + PartialOrd + DeserializeOwned,
[INFO] [stderr] 54 | |     S: SegmentLike + Clone> {
[INFO] [stderr] 55 | |     Memtable { tree: RBT<K, V>, current_size: usize },
[INFO] [stderr] 56 | |     SparseIndex { tree: RBT<K, SparseIndexEntry>, segment: S, limit: u8, index_size_ratio: f32 },
[INFO] [stderr] 57 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/streamlog.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     pub fn new(&self) -> SSTableObject<K, V, S> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `convert_to_sparse_index`
[INFO] [stderr]   --> src/streamlog.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn convert_to_sparse_index(&self, mut segment: S, limit: u8, index_size_ratio: f32) -> SSTableObject<K, V, S> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]   --> src/streamlog.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     pub fn write(self, key: K, value: V) -> SSTableObject<K, V, S> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read`
[INFO] [stderr]   --> src/streamlog.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     pub fn read(&mut self, key: K) -> Option<V> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `search`
[INFO] [stderr]    --> src/streamlog.rs:111:5
[INFO] [stderr]     |
[INFO] [stderr] 111 |     fn search(&mut self, s: u32, e: u32, k: K, meta_vector: &Vec<MetaInfo>) -> Option<V> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `walk_and_populate`
[INFO] [stderr]    --> src/streamlog.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     fn walk_and_populate(&self, node: &NodeType<K, V>, tree: RBT<K, SparseIndexEntry>, segment: &mut S, index_size: u32, current_index_size: u32) -> RBT<K, SparseIndexEntry> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_or_append`
[INFO] [stderr]    --> src/streamlog.rs:162:5
[INFO] [stderr]     |
[INFO] [stderr] 162 |     fn add_or_append(segment: &mut S, tree: RBT<K, SparseIndexEntry>, key: K, value: V, append: bool) -> RBT<K, SparseIndexEntry> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `IndexError`
[INFO] [stderr]    --> src/streamlog.rs:210:5
[INFO] [stderr]     |
[INFO] [stderr] 210 |     pub struct IndexError {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `node_exists`
[INFO] [stderr]    --> src/rbt.rs:162:9
[INFO] [stderr]     |
[INFO] [stderr] 162 |         pub fn node_exists(&self, my_key: &K) -> bool {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find_max`
[INFO] [stderr]    --> src/rbt.rs:177:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |         fn find_max(&self) -> NodeType<K, V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find_lower_bound_h`
[INFO] [stderr]    --> src/rbt.rs:190:9
[INFO] [stderr]     |
[INFO] [stderr] 190 |         fn find_lower_bound_h(&self, my_key: K, acc: NodeType<K, V>) -> NodeType<K, V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find_lower_bound_value`
[INFO] [stderr]    --> src/rbt.rs:208:9
[INFO] [stderr]     |
[INFO] [stderr] 208 |         pub fn find_lower_bound_value(&self, my_key: K) -> NodeType<K, V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_right_child`
[INFO] [stderr]    --> src/rbt.rs:212:9
[INFO] [stderr]     |
[INFO] [stderr] 212 |         pub fn add_right_child(&self, rc: &Rc<NodeType<K, V>>) -> NodeType<K, V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_left_child`
[INFO] [stderr]    --> src/rbt.rs:221:9
[INFO] [stderr]     |
[INFO] [stderr] 221 |         pub fn add_left_child(&self, lc: &Rc<NodeType<K, V>>) -> NodeType<K, V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_children`
[INFO] [stderr]    --> src/rbt.rs:230:9
[INFO] [stderr]     |
[INFO] [stderr] 230 |         pub fn add_children(&self, lc: &Rc<NodeType<K, V>>, rc: &Rc<NodeType<K, V>>) -> NodeType<K, V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find`
[INFO] [stderr]    --> src/rbt.rs:234:9
[INFO] [stderr]     |
[INFO] [stderr] 234 |         pub fn find(&self, my_key: &K) -> NodeType<K, V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/rbt.rs:291:9
[INFO] [stderr]     |
[INFO] [stderr] 291 |         pub fn new() -> RBT<K, V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_from`
[INFO] [stderr]    --> src/rbt.rs:295:9
[INFO] [stderr]     |
[INFO] [stderr] 295 |         pub fn new_from(tree: &RBT<K, V>) -> RBT<K, V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]    --> src/rbt.rs:304:9
[INFO] [stderr]     |
[INFO] [stderr] 304 |         pub fn add(&self, key: K, value: V) -> RBT<K, V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_smaller_value`
[INFO] [stderr]    --> src/rbt.rs:308:9
[INFO] [stderr]     |
[INFO] [stderr] 308 |         pub fn get_smaller_value(&self, my_key: K) -> Option<V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find`
[INFO] [stderr]    --> src/rbt.rs:318:9
[INFO] [stderr]     |
[INFO] [stderr] 318 |         pub fn find(&self, my_key: K) -> Option<V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/streamlog.rs:123:21
[INFO] [stderr]     |
[INFO] [stderr] 123 |                     segment.read_to_buffer(info.offset as u64, key_buf);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/streamlog.rs:132:25
[INFO] [stderr]     |
[INFO] [stderr] 132 |                         segment.read_to_buffer(info.offset + info.key_size as u64, value_buf);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fs::File;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::collections::HashMap`
[INFO] [stderr]  --> src/streamlog.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::collections::HashMap;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]  --> src/streamlog.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::io;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error`
[INFO] [stderr]  --> src/streamlog.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 | use std::error;
[INFO] [stderr]   |     ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::hash::Hash`
[INFO] [stderr]  --> src/streamlog.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::hash::Hash;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::cmp::Eq`
[INFO] [stderr]  --> src/streamlog.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::cmp::Eq;
[INFO] [stderr]   |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs`
[INFO] [stderr]  --> src/streamlog.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 | use std::fs;
[INFO] [stderr]   |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::streamlog::errors::IndexError`
[INFO] [stderr]   --> src/streamlog.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use crate::streamlog::errors::IndexError;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Deserialize`, `de`
[INFO] [stderr]   --> src/streamlog.rs:16:13
[INFO] [stderr]    |
[INFO] [stderr] 16 | use serde::{de, Serialize, Deserialize};
[INFO] [stderr]    |             ^^             ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `deserialize`, `serialize`
[INFO] [stderr]   --> src/streamlog.rs:18:15
[INFO] [stderr]    |
[INFO] [stderr] 18 | use bincode::{serialize, deserialize};
[INFO] [stderr]    |               ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `streamlog::FileSegment`
[INFO] [stderr]  --> src/main.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use streamlog::FileSegment;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `deserialize`, `serialize`
[INFO] [stderr]  --> src/main.rs:6:15
[INFO] [stderr]   |
[INFO] [stderr] 6 | use bincode::{serialize, deserialize};
[INFO] [stderr]   |               ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Deserialize`, `Serialize`
[INFO] [stderr]  --> src/main.rs:7:13
[INFO] [stderr]   |
[INFO] [stderr] 7 | use serde::{Serialize, Deserialize};
[INFO] [stderr]   |             ^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::BufWriter`
[INFO] [stderr]  --> src/main.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 | use std::io::BufWriter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Empty`, `Node`
[INFO] [stderr]  --> src/main.rs:9:37
[INFO] [stderr]   |
[INFO] [stderr] 9 | use rbt::red_black_tree::NodeType::{Node, Empty};
[INFO] [stderr]   |                                     ^^^^  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `rbt::red_black_tree::RBT`
[INFO] [stderr]   --> src/main.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use rbt::red_black_tree::RBT;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core::borrow::Borrow`
[INFO] [stderr]  --> src/rbt.rs:7:9
[INFO] [stderr]   |
[INFO] [stderr] 7 |     use core::borrow::Borrow;
[INFO] [stderr]   |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around function argument
[INFO] [stderr]    --> src/rbt.rs:112:34
[INFO] [stderr]     |
[INFO] [stderr] 112 |                         (Rc::new((NodeType::path_copy_node(left))), Rc::new(right.add(my_key, my_value)))
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_parens)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `proptest::prelude::*`
[INFO] [stderr]    --> src/rbt.rs:335:9
[INFO] [stderr]     |
[INFO] [stderr] 335 |     use proptest::prelude::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::slice::Iter`
[INFO] [stderr]   --> src/main.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | use std::slice::Iter;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::rc::Rc`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use std::rc::Rc;
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `current_size`
[INFO] [stderr]   --> src/streamlog.rs:69:30
[INFO] [stderr]    |
[INFO] [stderr] 69 |             Memtable { tree, current_size } => {
[INFO] [stderr]    |                              ^^^^^^^^^^^^ help: try ignoring the field: `current_size: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tree`
[INFO] [stderr]   --> src/streamlog.rs:76:27
[INFO] [stderr]    |
[INFO] [stderr] 76 |             SparseIndex { tree, segment: our_segment, limit, index_size_ratio } =>
[INFO] [stderr]    |                           ^^^^ help: try ignoring the field: `tree: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `current_size`
[INFO] [stderr]   --> src/streamlog.rs:97:30
[INFO] [stderr]    |
[INFO] [stderr] 97 |             Memtable { tree, current_size } => tree.find(key),
[INFO] [stderr]    |                              ^^^^^^^^^^^^ help: try ignoring the field: `current_size: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index_size_ratio`
[INFO] [stderr]   --> src/streamlog.rs:98:49
[INFO] [stderr]    |
[INFO] [stderr] 98 |             SparseIndex { tree, segment, limit, index_size_ratio } => {
[INFO] [stderr]    |                                                 ^^^^^^^^^^^^^^^^ help: try ignoring the field: `index_size_ratio: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `limit`
[INFO] [stderr]   --> src/streamlog.rs:98:42
[INFO] [stderr]    |
[INFO] [stderr] 98 |             SparseIndex { tree, segment, limit, index_size_ratio } => {
[INFO] [stderr]    |                                          ^^^^^ help: try ignoring the field: `limit: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `segment`
[INFO] [stderr]   --> src/streamlog.rs:98:33
[INFO] [stderr]    |
[INFO] [stderr] 98 |             SparseIndex { tree, segment, limit, index_size_ratio } => {
[INFO] [stderr]    |                                 ^^^^^^^ help: try ignoring the field: `segment: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color`
[INFO] [stderr]    --> src/streamlog.rs:144:45
[INFO] [stderr]     |
[INFO] [stderr] 144 |             Node { key, value, left, right, color } => {
[INFO] [stderr]     |                                             ^^^^^ help: try ignoring the field: `color: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `f`
[INFO] [stderr]    --> src/streamlog.rs:344:13
[INFO] [stderr]     |
[INFO] [stderr] 344 |         let f: FileSegment = SegmentLike::new(file_name);
[INFO] [stderr]     |             ^ help: consider prefixing with an underscore: `_f`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color1`
[INFO] [stderr]    --> src/rbt.rs:262:32
[INFO] [stderr]     |
[INFO] [stderr] 262 |                         color: color1
[INFO] [stderr]     |                                ^^^^^^ help: consider prefixing with an underscore: `_color1`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color2`
[INFO] [stderr]    --> src/rbt.rs:269:36
[INFO] [stderr]     |
[INFO] [stderr] 269 |                             color: color2
[INFO] [stderr]     |                                    ^^^^^^ help: consider prefixing with an underscore: `_color2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key_left`
[INFO] [stderr]    --> src/rbt.rs:117:38
[INFO] [stderr]     |
[INFO] [stderr] 117 |                         (Node { key: key_left, value: value_left, left: lefts_left, right: lefts_right, color: lefts_color },
[INFO] [stderr]     |                                      ^^^^^^^^ help: consider prefixing with an underscore: `_key_left`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key_right`
[INFO] [stderr]    --> src/rbt.rs:118:41
[INFO] [stderr]     |
[INFO] [stderr] 118 |                             Node { key: key_right, value: value_right, left: rights_left, right: rights_right, color: rights_color }) => {
[INFO] [stderr]     |                                         ^^^^^^^^^ help: consider prefixing with an underscore: `_key_right`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lefts_right`
[INFO] [stderr]    --> src/rbt.rs:117:92
[INFO] [stderr]     |
[INFO] [stderr] 117 |                         (Node { key: key_left, value: value_left, left: lefts_left, right: lefts_right, color: lefts_color },
[INFO] [stderr]     |                                                                                            ^^^^^^^^^^^ help: consider prefixing with an underscore: `_lefts_right`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rights_left`
[INFO] [stderr]    --> src/rbt.rs:118:78
[INFO] [stderr]     |
[INFO] [stderr] 118 |                             Node { key: key_right, value: value_right, left: rights_left, right: rights_right, color: rights_color }) => {
[INFO] [stderr]     |                                                                              ^^^^^^^^^^^ help: consider prefixing with an underscore: `_rights_left`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rights_right`
[INFO] [stderr]    --> src/rbt.rs:118:98
[INFO] [stderr]     |
[INFO] [stderr] 118 |                             Node { key: key_right, value: value_right, left: rights_left, right: rights_right, color: rights_color }) => {
[INFO] [stderr]     |                                                                                                  ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_rights_right`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value_left`
[INFO] [stderr]    --> src/rbt.rs:117:55
[INFO] [stderr]     |
[INFO] [stderr] 117 |                         (Node { key: key_left, value: value_left, left: lefts_left, right: lefts_right, color: lefts_color },
[INFO] [stderr]     |                                                       ^^^^^^^^^^ help: consider prefixing with an underscore: `_value_left`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value_right`
[INFO] [stderr]    --> src/rbt.rs:118:59
[INFO] [stderr]     |
[INFO] [stderr] 118 |                             Node { key: key_right, value: value_right, left: rights_left, right: rights_right, color: rights_color }) => {
[INFO] [stderr]     |                                                           ^^^^^^^^^^^ help: consider prefixing with an underscore: `_value_right`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key_left`
[INFO] [stderr]    --> src/rbt.rs:134:38
[INFO] [stderr]     |
[INFO] [stderr] 134 |                         (Node { key: key_left, value: value_left, left: lefts_left, right: lefts_right, color: lefts_color }, Empty) => {
[INFO] [stderr]     |                                      ^^^^^^^^ help: consider prefixing with an underscore: `_key_left`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lefts_right`
[INFO] [stderr]    --> src/rbt.rs:134:92
[INFO] [stderr]     |
[INFO] [stderr] 134 |                         (Node { key: key_left, value: value_left, left: lefts_left, right: lefts_right, color: lefts_color }, Empty) => {
[INFO] [stderr]     |                                                                                            ^^^^^^^^^^^ help: consider prefixing with an underscore: `_lefts_right`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value_left`
[INFO] [stderr]    --> src/rbt.rs:134:55
[INFO] [stderr]     |
[INFO] [stderr] 134 |                         (Node { key: key_left, value: value_left, left: lefts_left, right: lefts_right, color: lefts_color }, Empty) => {
[INFO] [stderr]     |                                                       ^^^^^^^^^^ help: consider prefixing with an underscore: `_value_left`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key_right`
[INFO] [stderr]    --> src/rbt.rs:146:45
[INFO] [stderr]     |
[INFO] [stderr] 146 |                         (Empty, Node { key: key_right, value: value_right, left: rights_left, right: rights_right, color: rights_color }) => {
[INFO] [stderr]     |                                             ^^^^^^^^^ help: consider prefixing with an underscore: `_key_right`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rights_left`
[INFO] [stderr]    --> src/rbt.rs:146:82
[INFO] [stderr]     |
[INFO] [stderr] 146 |                         (Empty, Node { key: key_right, value: value_right, left: rights_left, right: rights_right, color: rights_color }) => {
[INFO] [stderr]     |                                                                                  ^^^^^^^^^^^ help: consider prefixing with an underscore: `_rights_left`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rights_right`
[INFO] [stderr]    --> src/rbt.rs:146:102
[INFO] [stderr]     |
[INFO] [stderr] 146 |                         (Empty, Node { key: key_right, value: value_right, left: rights_left, right: rights_right, color: rights_color }) => {
[INFO] [stderr]     |                                                                                                      ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_rights_right`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value_right`
[INFO] [stderr]    --> src/rbt.rs:146:63
[INFO] [stderr]     |
[INFO] [stderr] 146 |                         (Empty, Node { key: key_right, value: value_right, left: rights_left, right: rights_right, color: rights_color }) => {
[INFO] [stderr]     |                                                               ^^^^^^^^^^^ help: consider prefixing with an underscore: `_value_right`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/rbt.rs:165:29
[INFO] [stderr]     |
[INFO] [stderr] 165 |                 Node { key, value, left, right, .. } => {
[INFO] [stderr]     |                             ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `right`
[INFO] [stderr]    --> src/rbt.rs:215:42
[INFO] [stderr]     |
[INFO] [stderr] 215 |                 Node { key, value, left, right, color } => {
[INFO] [stderr]     |                                          ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `left`
[INFO] [stderr]    --> src/rbt.rs:224:36
[INFO] [stderr]     |
[INFO] [stderr] 224 |                 Node { key, value, left, right, color } => {
[INFO] [stderr]     |                                    ^^^^ help: try ignoring the field: `left: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color`
[INFO] [stderr]    --> src/rbt.rs:342:45
[INFO] [stderr]     |
[INFO] [stderr] 342 |             Node { key, value, left, right, color } => {
[INFO] [stderr]     |                                             ^^^^^ help: try ignoring the field: `color: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]    --> src/rbt.rs:342:20
[INFO] [stderr]     |
[INFO] [stderr] 342 |             Node { key, value, left, right, color } => {
[INFO] [stderr]     |                    ^^^ help: try ignoring the field: `key: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/rbt.rs:342:25
[INFO] [stderr]     |
[INFO] [stderr] 342 |             Node { key, value, left, right, color } => {
[INFO] [stderr]     |                         ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color`
[INFO] [stderr]    --> src/rbt.rs:396:48
[INFO] [stderr]     |
[INFO] [stderr] 396 |         if let Node { key, value, left, right, color } = tree0 {
[INFO] [stderr]     |                                                ^^^^^ help: try ignoring the field: `color: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `right`
[INFO] [stderr]    --> src/rbt.rs:396:41
[INFO] [stderr]     |
[INFO] [stderr] 396 |         if let Node { key, value, left, right, color } = tree0 {
[INFO] [stderr]     |                                         ^^^^^ help: try ignoring the field: `right: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/rbt.rs:396:28
[INFO] [stderr]     |
[INFO] [stderr] 396 |         if let Node { key, value, left, right, color } = tree0 {
[INFO] [stderr]     |                            ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color2`
[INFO] [stderr]    --> src/rbt.rs:401:39
[INFO] [stderr]     |
[INFO] [stderr] 401 |                 right: right2, color: color2
[INFO] [stderr]     |                                       ^^^^^^ help: consider prefixing with an underscore: `_color2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `left2`
[INFO] [stderr]    --> src/rbt.rs:400:23
[INFO] [stderr]     |
[INFO] [stderr] 400 |                 left: left2,
[INFO] [stderr]     |                       ^^^^^ help: consider prefixing with an underscore: `_left2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value2`
[INFO] [stderr]    --> src/rbt.rs:399:35
[INFO] [stderr]     |
[INFO] [stderr] 399 |                 key: key2, value: value2,
[INFO] [stderr]     |                                   ^^^^^^ help: consider prefixing with an underscore: `_value2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color`
[INFO] [stderr]    --> src/rbt.rs:421:48
[INFO] [stderr]     |
[INFO] [stderr] 421 |         if let Node { key, value, left, right, color } = tree3 {
[INFO] [stderr]     |                                                ^^^^^ help: try ignoring the field: `color: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `left`
[INFO] [stderr]    --> src/rbt.rs:421:35
[INFO] [stderr]     |
[INFO] [stderr] 421 |         if let Node { key, value, left, right, color } = tree3 {
[INFO] [stderr]     |                                   ^^^^ help: try ignoring the field: `left: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/rbt.rs:421:28
[INFO] [stderr]     |
[INFO] [stderr] 421 |         if let Node { key, value, left, right, color } = tree3 {
[INFO] [stderr]     |                            ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `color2`
[INFO] [stderr]    --> src/rbt.rs:426:39
[INFO] [stderr]     |
[INFO] [stderr] 426 |                 right: right2, color: color2
[INFO] [stderr]     |                                       ^^^^^^ help: consider prefixing with an underscore: `_color2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `right2`
[INFO] [stderr]    --> src/rbt.rs:426:24
[INFO] [stderr]     |
[INFO] [stderr] 426 |                 right: right2, color: color2
[INFO] [stderr]     |                        ^^^^^^ help: consider prefixing with an underscore: `_right2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value2`
[INFO] [stderr]    --> src/rbt.rs:424:35
[INFO] [stderr]     |
[INFO] [stderr] 424 |                 key: key2, value: value2,
[INFO] [stderr]     |                                   ^^^^^^ help: consider prefixing with an underscore: `_value2`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `key`
[INFO] [stderr]    --> src/rbt.rs:472:23
[INFO] [stderr]     |
[INFO] [stderr] 472 |         if let Node { key, value, left, right, color } = tree.flip_colors() {
[INFO] [stderr]     |                       ^^^ help: try ignoring the field: `key: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/rbt.rs:472:28
[INFO] [stderr]     |
[INFO] [stderr] 472 |         if let Node { key, value, left, right, color } = tree.flip_colors() {
[INFO] [stderr]     |                            ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: private type `streamlog::SparseIndexEntry` in public interface (error E0446)
[INFO] [stderr]   --> src/streamlog.rs:56:19
[INFO] [stderr]    |
[INFO] [stderr] 56 |     SparseIndex { tree: RBT<K, SparseIndexEntry>, segment: S, limit: u8, index_size_ratio: f32 },
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(private_in_public)]` on by default
[INFO] [stderr]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
[INFO] [stderr]    = note: for more information, see issue #34537 <https://github.com/rust-lang/rust/issues/34537>
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `SSTableObject`
[INFO] [stderr]   --> src/streamlog.rs:52:1
[INFO] [stderr]    |
[INFO] [stderr] 52 | / pub enum SSTableObject<K: Copy + Clone + Serialize + PartialOrd + DeserializeOwned + PartialEq,
[INFO] [stderr] 53 | |     V: Copy + Clone + Serialize + PartialOrd + DeserializeOwned,
[INFO] [stderr] 54 | |     S: SegmentLike + Clone> {
[INFO] [stderr] 55 | |     Memtable { tree: RBT<K, V>, current_size: usize },
[INFO] [stderr] 56 | |     SparseIndex { tree: RBT<K, SparseIndexEntry>, segment: S, limit: u8, index_size_ratio: f32 },
[INFO] [stderr] 57 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/streamlog.rs:62:5
[INFO] [stderr]    |
[INFO] [stderr] 62 |     pub fn new(&self) -> SSTableObject<K, V, S> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `convert_to_sparse_index`
[INFO] [stderr]   --> src/streamlog.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn convert_to_sparse_index(&self, mut segment: S, limit: u8, index_size_ratio: f32) -> SSTableObject<K, V, S> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]   --> src/streamlog.rs:81:5
[INFO] [stderr]    |
[INFO] [stderr] 81 |     pub fn write(self, key: K, value: V) -> SSTableObject<K, V, S> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `read`
[INFO] [stderr]   --> src/streamlog.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     pub fn read(&mut self, key: K) -> Option<V> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `search`
[INFO] [stderr]    --> src/streamlog.rs:111:5
[INFO] [stderr]     |
[INFO] [stderr] 111 |     fn search(&mut self, s: u32, e: u32, k: K, meta_vector: &Vec<MetaInfo>) -> Option<V> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `walk_and_populate`
[INFO] [stderr]    --> src/streamlog.rs:141:5
[INFO] [stderr]     |
[INFO] [stderr] 141 |     fn walk_and_populate(&self, node: &NodeType<K, V>, tree: RBT<K, SparseIndexEntry>, segment: &mut S, index_size: u32, current_index_size: u32) -> RBT<K, SparseIndexEntry> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_or_append`
[INFO] [stderr]    --> src/streamlog.rs:162:5
[INFO] [stderr]     |
[INFO] [stderr] 162 |     fn add_or_append(segment: &mut S, tree: RBT<K, SparseIndexEntry>, key: K, value: V, append: bool) -> RBT<K, SparseIndexEntry> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `IndexError`
[INFO] [stderr]    --> src/streamlog.rs:210:5
[INFO] [stderr]     |
[INFO] [stderr] 210 |     pub struct IndexError {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `name`
[INFO] [stderr]    --> src/streamlog.rs:297:9
[INFO] [stderr]     |
[INFO] [stderr] 297 |         name: String,
[INFO] [stderr]     |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `node_exists`
[INFO] [stderr]    --> src/rbt.rs:162:9
[INFO] [stderr]     |
[INFO] [stderr] 162 |         pub fn node_exists(&self, my_key: &K) -> bool {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find_max`
[INFO] [stderr]    --> src/rbt.rs:177:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |         fn find_max(&self) -> NodeType<K, V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find_lower_bound_h`
[INFO] [stderr]    --> src/rbt.rs:190:9
[INFO] [stderr]     |
[INFO] [stderr] 190 |         fn find_lower_bound_h(&self, my_key: K, acc: NodeType<K, V>) -> NodeType<K, V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find_lower_bound_value`
[INFO] [stderr]    --> src/rbt.rs:208:9
[INFO] [stderr]     |
[INFO] [stderr] 208 |         pub fn find_lower_bound_value(&self, my_key: K) -> NodeType<K, V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find`
[INFO] [stderr]    --> src/rbt.rs:234:9
[INFO] [stderr]     |
[INFO] [stderr] 234 |         pub fn find(&self, my_key: &K) -> NodeType<K, V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/rbt.rs:291:9
[INFO] [stderr]     |
[INFO] [stderr] 291 |         pub fn new() -> RBT<K, V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new_from`
[INFO] [stderr]    --> src/rbt.rs:295:9
[INFO] [stderr]     |
[INFO] [stderr] 295 |         pub fn new_from(tree: &RBT<K, V>) -> RBT<K, V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add`
[INFO] [stderr]    --> src/rbt.rs:304:9
[INFO] [stderr]     |
[INFO] [stderr] 304 |         pub fn add(&self, key: K, value: V) -> RBT<K, V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_smaller_value`
[INFO] [stderr]    --> src/rbt.rs:308:9
[INFO] [stderr]     |
[INFO] [stderr] 308 |         pub fn get_smaller_value(&self, my_key: K) -> Option<V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `find`
[INFO] [stderr]    --> src/rbt.rs:318:9
[INFO] [stderr]     |
[INFO] [stderr] 318 |         pub fn find(&self, my_key: K) -> Option<V> {
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `balanced_tuple`
[INFO] [stderr]    --> src/rbt.rs:339:5
[INFO] [stderr]     |
[INFO] [stderr] 339 |     fn balanced_tuple<K: PartialOrd, V: PartialOrd>(root: &NodeType<K, V>) -> (bool, i8) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `balanced`
[INFO] [stderr]    --> src/rbt.rs:350:5
[INFO] [stderr]     |
[INFO] [stderr] 350 |     fn balanced<K: PartialOrd, V: PartialOrd>(root: &NodeType<K, V>) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/streamlog.rs:123:21
[INFO] [stderr]     |
[INFO] [stderr] 123 |                     segment.read_to_buffer(info.offset as u64, key_buf);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/streamlog.rs:132:25
[INFO] [stderr]     |
[INFO] [stderr] 132 |                         segment.read_to_buffer(info.offset + info.key_size as u64, value_buf);
[INFO] [stderr]     |                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/streamlog.rs:291:13
[INFO] [stderr]     |
[INFO] [stderr] 291 |             fs::remove_file(file_name);
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/streamlog.rs:354:9
[INFO] [stderr]     |
[INFO] [stderr] 354 |         f.write_to_segment(0, &s);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/streamlog.rs:358:9
[INFO] [stderr]     |
[INFO] [stderr] 358 |         reader.read_line(&mut line);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/streamlog.rs:370:9
[INFO] [stderr]     |
[INFO] [stderr] 370 |         writer.flush(); // have not gotten out of scope yet, so gotta flush
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 24.72s
[INFO] running `"docker" "inspect" "79240a5a7bef1fb573c9c481f5391f9cd320a15459c943b1ead87d38b901f54b"`
[INFO] running `"docker" "rm" "-f" "79240a5a7bef1fb573c9c481f5391f9cd320a15459c943b1ead87d38b901f54b"`
[INFO] [stdout] 79240a5a7bef1fb573c9c481f5391f9cd320a15459c943b1ead87d38b901f54b