[INFO] cloning repository https://github.com/LixvYang/sqldb_rs_
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LixvYang/sqldb_rs_" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLixvYang%2Fsqldb_rs_", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLixvYang%2Fsqldb_rs_'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0774e3ca4470a7e85652468c3dcb437094bc644b
[INFO] checking LixvYang/sqldb_rs_ against try#f77b5bc6c7c84df104f86b0dd01d9490e3923fa8 for pr-147834
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLixvYang%2Fsqldb_rs_" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/LixvYang/sqldb_rs_
[INFO] finished tweaking git repo https://github.com/LixvYang/sqldb_rs_
[INFO] tweaked toml for git repo https://github.com/LixvYang/sqldb_rs_ written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/LixvYang/sqldb_rs_ on toolchain f77b5bc6c7c84df104f86b0dd01d9490e3923fa8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/LixvYang/sqldb_rs_ already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3846d110dfbce58d7f92505ebe041dcac7eb0f2786b5e8e04c8c4391fdce15d5
[INFO] running `Command { std: "docker" "start" "-a" "3846d110dfbce58d7f92505ebe041dcac7eb0f2786b5e8e04c8c4391fdce15d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3846d110dfbce58d7f92505ebe041dcac7eb0f2786b5e8e04c8c4391fdce15d5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3846d110dfbce58d7f92505ebe041dcac7eb0f2786b5e8e04c8c4391fdce15d5", kill_on_drop: false }`
[INFO] [stdout] 3846d110dfbce58d7f92505ebe041dcac7eb0f2786b5e8e04c8c4391fdce15d5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+f77b5bc6c7c84df104f86b0dd01d9490e3923fa8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6a25bd0f8d5351bb1f9d289fd012ca5a305b4dfe8a03fa1d811f13c38032d3e8
[INFO] running `Command { std: "docker" "start" "-a" "6a25bd0f8d5351bb1f9d289fd012ca5a305b4dfe8a03fa1d811f13c38032d3e8", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling libc v0.2.171
[INFO] [stderr]    Compiling rustix v0.38.44
[INFO] [stderr]     Checking linux-raw-sys v0.4.15
[INFO] [stderr]    Compiling quote v1.0.40
[INFO] [stderr]     Checking getrandom v0.3.2
[INFO] [stderr]    Compiling syn v2.0.100
[INFO] [stderr]     Checking tempfile v3.19.1
[INFO] [stderr]     Checking fs4 v0.8.4
[INFO] [stderr]    Compiling serde_derive v1.0.219
[INFO] [stderr]     Checking serde v1.0.219
[INFO] [stderr]     Checking serde_bytes v0.11.17
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking sqldb-rs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/sql/parser/lexer.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::error::{self, Error, Result};
[INFO] [stdout]   |                    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `self`
[INFO] [stdout]  --> src/sql/parser/lexer.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::error::{self, Error, Result};
[INFO] [stdout]   |                    ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `path::PathBuf`
[INFO] [stdout]   --> src/storage/engine.rs:48:27
[INFO] [stdout]    |
[INFO] [stdout] 48 |     use std::{ops::Bound, path::PathBuf};
[INFO] [stdout]    |                           ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:42:29
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn serialize_bool(self, v: bool) -> Result<()> {
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:46:27
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn serialize_i8(self, v: i8) -> Result<()> {
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:50:28
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn serialize_i16(self, v: i16) -> Result<()> {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:54:28
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn serialize_i32(self, v: i32) -> Result<()> {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:58:28
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn serialize_i64(self, v: i64) -> Result<()> {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:62:27
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn serialize_u8(self, v: u8) -> Result<()> {
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:66:28
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn serialize_u16(self, v: u16) -> Result<()> {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:70:28
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn serialize_u32(self, v: u32) -> Result<()> {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:79:28
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn serialize_f32(self, v: f32) -> Result<()> {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:83:28
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn serialize_f64(self, v: f64) -> Result<()> {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:87:29
[INFO] [stdout]    |
[INFO] [stdout] 87 |     fn serialize_char(self, v: char) -> Result<()> {
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:91:28
[INFO] [stdout]    |
[INFO] [stdout] 91 |     fn serialize_str(self, v: &str) -> Result<()> {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/storage/keycode.rs:118:32
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn serialize_some<T>(self, value: &T) -> Result<()>
[INFO] [stdout]     |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:129:36
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn serialize_unit_struct(self, name: &'static str) -> Result<()> {
[INFO] [stdout]     |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |         name: &'static str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant`
[INFO] [stdout]    --> src/storage/keycode.rs:138:9
[INFO] [stdout]     |
[INFO] [stdout] 138 |         variant: &'static str,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:144:42
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn serialize_newtype_struct<T>(self, name: &'static str, value: &T) -> Result<()>
[INFO] [stdout]     |                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/storage/keycode.rs:144:62
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn serialize_newtype_struct<T>(self, name: &'static str, value: &T) -> Result<()>
[INFO] [stdout]     |                                                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:166:28
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq> {
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:170:30
[INFO] [stdout]     |
[INFO] [stdout] 170 |     fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple> {
[INFO] [stdout]     |                              ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |         name: &'static str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |         len: usize,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:188:9
[INFO] [stdout]     |
[INFO] [stdout] 188 |         len: usize,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:194:28
[INFO] [stdout]     |
[INFO] [stdout] 194 |     fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap> {
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:198:31
[INFO] [stdout]     |
[INFO] [stdout] 198 |     fn serialize_struct(self, name: &'static str, len: usize) -> Result<Self::SerializeStruct> {
[INFO] [stdout]     |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:198:51
[INFO] [stdout]     |
[INFO] [stdout] 198 |     fn serialize_struct(self, name: &'static str, len: usize) -> Result<Self::SerializeStruct> {
[INFO] [stdout]     |                                                   ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:204:9
[INFO] [stdout]     |
[INFO] [stdout] 204 |         name: &'static str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant_index`
[INFO] [stdout]    --> src/storage/keycode.rs:205:9
[INFO] [stdout]     |
[INFO] [stdout] 205 |         variant_index: u32,
[INFO] [stdout]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant`
[INFO] [stdout]    --> src/storage/keycode.rs:206:9
[INFO] [stdout]     |
[INFO] [stdout] 206 |         variant: &'static str,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:207:9
[INFO] [stdout]     |
[INFO] [stdout] 207 |         len: usize,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:299:33
[INFO] [stdout]     |
[INFO] [stdout] 299 |     fn deserialize_any<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:306:34
[INFO] [stdout]     |
[INFO] [stdout] 306 |     fn deserialize_bool<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:313:32
[INFO] [stdout]     |
[INFO] [stdout] 313 |     fn deserialize_i8<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:320:33
[INFO] [stdout]     |
[INFO] [stdout] 320 |     fn deserialize_i16<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:327:33
[INFO] [stdout]     |
[INFO] [stdout] 327 |     fn deserialize_i32<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:334:33
[INFO] [stdout]     |
[INFO] [stdout] 334 |     fn deserialize_i64<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:341:32
[INFO] [stdout]     |
[INFO] [stdout] 341 |     fn deserialize_u8<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:348:33
[INFO] [stdout]     |
[INFO] [stdout] 348 |     fn deserialize_u16<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:355:33
[INFO] [stdout]     |
[INFO] [stdout] 355 |     fn deserialize_u32<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:373:33
[INFO] [stdout]     |
[INFO] [stdout] 373 |     fn deserialize_f32<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:380:33
[INFO] [stdout]     |
[INFO] [stdout] 380 |     fn deserialize_f64<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:387:34
[INFO] [stdout]     |
[INFO] [stdout] 387 |     fn deserialize_char<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:394:33
[INFO] [stdout]     |
[INFO] [stdout] 394 |     fn deserialize_str<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:401:36
[INFO] [stdout]     |
[INFO] [stdout] 401 |     fn deserialize_string<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:422:36
[INFO] [stdout]     |
[INFO] [stdout] 422 |     fn deserialize_option<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:429:34
[INFO] [stdout]     |
[INFO] [stdout] 429 |     fn deserialize_unit<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:436:41
[INFO] [stdout]     |
[INFO] [stdout] 436 |     fn deserialize_unit_struct<V>(self, name: &'static str, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:436:61
[INFO] [stdout]     |
[INFO] [stdout] 436 |     fn deserialize_unit_struct<V>(self, name: &'static str, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                                             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:443:44
[INFO] [stdout]     |
[INFO] [stdout] 443 |     fn deserialize_newtype_struct<V>(self, name: &'static str, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:443:64
[INFO] [stdout]     |
[INFO] [stdout] 443 |     fn deserialize_newtype_struct<V>(self, name: &'static str, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:457:35
[INFO] [stdout]     |
[INFO] [stdout] 457 |     fn deserialize_tuple<V>(self, len: usize, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                   ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:466:9
[INFO] [stdout]     |
[INFO] [stdout] 466 |         name: &'static str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:467:9
[INFO] [stdout]     |
[INFO] [stdout] 467 |         len: usize,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:468:9
[INFO] [stdout]     |
[INFO] [stdout] 468 |         visitor: V,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:476:33
[INFO] [stdout]     |
[INFO] [stdout] 476 |     fn deserialize_map<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:485:9
[INFO] [stdout]     |
[INFO] [stdout] 485 |         name: &'static str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fields`
[INFO] [stdout]    --> src/storage/keycode.rs:486:9
[INFO] [stdout]     |
[INFO] [stdout] 486 |         fields: &'static [&'static str],
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fields`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:487:9
[INFO] [stdout]     |
[INFO] [stdout] 487 |         visitor: V,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:497:9
[INFO] [stdout]     |
[INFO] [stdout] 497 |         name: &'static str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variants`
[INFO] [stdout]    --> src/storage/keycode.rs:498:9
[INFO] [stdout]     |
[INFO] [stdout] 498 |         variants: &'static [&'static str],
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variants`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:507:40
[INFO] [stdout]     |
[INFO] [stdout] 507 |     fn deserialize_identifier<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                        ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:514:41
[INFO] [stdout]     |
[INFO] [stdout] 514 |     fn deserialize_ignored_any<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:562:31
[INFO] [stdout]     |
[INFO] [stdout] 562 |     fn tuple_variant<V>(self, len: usize, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fields`
[INFO] [stdout]    --> src/storage/keycode.rs:569:32
[INFO] [stdout]     |
[INFO] [stdout] 569 |     fn struct_variant<V>(self, fields: &'static [&'static str], visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fields`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:569:65
[INFO] [stdout]     |
[INFO] [stdout] 569 |     fn struct_variant<V>(self, fields: &'static [&'static str], visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `KVEngine` is never constructed
[INFO] [stdout]   --> src/sql/engine/kv.rs:15:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct KVEngine<E: StorageEngine> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/sql/engine/kv.rs:28:12
[INFO] [stdout]    |
[INFO] [stdout] 27 | impl<E: StorageEngine> KVEngine<E> {
[INFO] [stdout]    | ---------------------------------- associated function in this implementation
[INFO] [stdout] 28 |     pub fn new(engine: E) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `KVTransaction` is never constructed
[INFO] [stdout]   --> src/sql/engine/kv.rs:44:12
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub struct KVTransaction<E: StorageEngine> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/sql/engine/kv.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 48 | impl<E: StorageEngine> KVTransaction<E> {
[INFO] [stdout]    | --------------------------------------- associated function in this implementation
[INFO] [stdout] 49 |     pub fn new(txn: storage::mvcc::MvccTransaction<E>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Key` is never used
[INFO] [stdout]    --> src/sql/engine/kv.rs:141:6
[INFO] [stdout]     |
[INFO] [stdout] 141 | enum Key {
[INFO] [stdout]     |      ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `KeyPrefix` is never used
[INFO] [stdout]    --> src/sql/engine/kv.rs:146:6
[INFO] [stdout]     |
[INFO] [stdout] 146 | enum KeyPrefix {
[INFO] [stdout]     |      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/sql/engine/mod.rs:58:25
[INFO] [stdout]    |
[INFO] [stdout] 58 |                         txn.rollback();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 58 |                         let _ = txn.rollback();
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:42:29
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn serialize_bool(self, v: bool) -> Result<()> {
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:46:27
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn serialize_i8(self, v: i8) -> Result<()> {
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:50:28
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn serialize_i16(self, v: i16) -> Result<()> {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:54:28
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn serialize_i32(self, v: i32) -> Result<()> {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:58:28
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn serialize_i64(self, v: i64) -> Result<()> {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:62:27
[INFO] [stdout]    |
[INFO] [stdout] 62 |     fn serialize_u8(self, v: u8) -> Result<()> {
[INFO] [stdout]    |                           ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:66:28
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn serialize_u16(self, v: u16) -> Result<()> {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:70:28
[INFO] [stdout]    |
[INFO] [stdout] 70 |     fn serialize_u32(self, v: u32) -> Result<()> {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:79:28
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn serialize_f32(self, v: f32) -> Result<()> {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:83:28
[INFO] [stdout]    |
[INFO] [stdout] 83 |     fn serialize_f64(self, v: f64) -> Result<()> {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:87:29
[INFO] [stdout]    |
[INFO] [stdout] 87 |     fn serialize_char(self, v: char) -> Result<()> {
[INFO] [stdout]    |                             ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keycode.rs:91:28
[INFO] [stdout]    |
[INFO] [stdout] 91 |     fn serialize_str(self, v: &str) -> Result<()> {
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_v`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/storage/keycode.rs:118:32
[INFO] [stdout]     |
[INFO] [stdout] 118 |     fn serialize_some<T>(self, value: &T) -> Result<()>
[INFO] [stdout]     |                                ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:129:36
[INFO] [stdout]     |
[INFO] [stdout] 129 |     fn serialize_unit_struct(self, name: &'static str) -> Result<()> {
[INFO] [stdout]     |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:136:9
[INFO] [stdout]     |
[INFO] [stdout] 136 |         name: &'static str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant`
[INFO] [stdout]    --> src/storage/keycode.rs:138:9
[INFO] [stdout]     |
[INFO] [stdout] 138 |         variant: &'static str,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:144:42
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn serialize_newtype_struct<T>(self, name: &'static str, value: &T) -> Result<()>
[INFO] [stdout]     |                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `value`
[INFO] [stdout]    --> src/storage/keycode.rs:144:62
[INFO] [stdout]     |
[INFO] [stdout] 144 |     fn serialize_newtype_struct<T>(self, name: &'static str, value: &T) -> Result<()>
[INFO] [stdout]     |                                                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:166:28
[INFO] [stdout]     |
[INFO] [stdout] 166 |     fn serialize_seq(self, len: Option<usize>) -> Result<Self::SerializeSeq> {
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:170:30
[INFO] [stdout]     |
[INFO] [stdout] 170 |     fn serialize_tuple(self, len: usize) -> Result<Self::SerializeTuple> {
[INFO] [stdout]     |                              ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |         name: &'static str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:177:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |         len: usize,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:188:9
[INFO] [stdout]     |
[INFO] [stdout] 188 |         len: usize,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:194:28
[INFO] [stdout]     |
[INFO] [stdout] 194 |     fn serialize_map(self, len: Option<usize>) -> Result<Self::SerializeMap> {
[INFO] [stdout]     |                            ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:198:31
[INFO] [stdout]     |
[INFO] [stdout] 198 |     fn serialize_struct(self, name: &'static str, len: usize) -> Result<Self::SerializeStruct> {
[INFO] [stdout]     |                               ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:198:51
[INFO] [stdout]     |
[INFO] [stdout] 198 |     fn serialize_struct(self, name: &'static str, len: usize) -> Result<Self::SerializeStruct> {
[INFO] [stdout]     |                                                   ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:204:9
[INFO] [stdout]     |
[INFO] [stdout] 204 |         name: &'static str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant_index`
[INFO] [stdout]    --> src/storage/keycode.rs:205:9
[INFO] [stdout]     |
[INFO] [stdout] 205 |         variant_index: u32,
[INFO] [stdout]     |         ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant_index`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variant`
[INFO] [stdout]    --> src/storage/keycode.rs:206:9
[INFO] [stdout]     |
[INFO] [stdout] 206 |         variant: &'static str,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:207:9
[INFO] [stdout]     |
[INFO] [stdout] 207 |         len: usize,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:299:33
[INFO] [stdout]     |
[INFO] [stdout] 299 |     fn deserialize_any<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:306:34
[INFO] [stdout]     |
[INFO] [stdout] 306 |     fn deserialize_bool<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:313:32
[INFO] [stdout]     |
[INFO] [stdout] 313 |     fn deserialize_i8<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:320:33
[INFO] [stdout]     |
[INFO] [stdout] 320 |     fn deserialize_i16<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:327:33
[INFO] [stdout]     |
[INFO] [stdout] 327 |     fn deserialize_i32<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:334:33
[INFO] [stdout]     |
[INFO] [stdout] 334 |     fn deserialize_i64<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:341:32
[INFO] [stdout]     |
[INFO] [stdout] 341 |     fn deserialize_u8<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:348:33
[INFO] [stdout]     |
[INFO] [stdout] 348 |     fn deserialize_u16<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:355:33
[INFO] [stdout]     |
[INFO] [stdout] 355 |     fn deserialize_u32<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:373:33
[INFO] [stdout]     |
[INFO] [stdout] 373 |     fn deserialize_f32<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:380:33
[INFO] [stdout]     |
[INFO] [stdout] 380 |     fn deserialize_f64<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:387:34
[INFO] [stdout]     |
[INFO] [stdout] 387 |     fn deserialize_char<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:394:33
[INFO] [stdout]     |
[INFO] [stdout] 394 |     fn deserialize_str<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:401:36
[INFO] [stdout]     |
[INFO] [stdout] 401 |     fn deserialize_string<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:422:36
[INFO] [stdout]     |
[INFO] [stdout] 422 |     fn deserialize_option<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:429:34
[INFO] [stdout]     |
[INFO] [stdout] 429 |     fn deserialize_unit<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:436:41
[INFO] [stdout]     |
[INFO] [stdout] 436 |     fn deserialize_unit_struct<V>(self, name: &'static str, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:436:61
[INFO] [stdout]     |
[INFO] [stdout] 436 |     fn deserialize_unit_struct<V>(self, name: &'static str, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                                             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:443:44
[INFO] [stdout]     |
[INFO] [stdout] 443 |     fn deserialize_newtype_struct<V>(self, name: &'static str, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                            ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:443:64
[INFO] [stdout]     |
[INFO] [stdout] 443 |     fn deserialize_newtype_struct<V>(self, name: &'static str, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:457:35
[INFO] [stdout]     |
[INFO] [stdout] 457 |     fn deserialize_tuple<V>(self, len: usize, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                   ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:466:9
[INFO] [stdout]     |
[INFO] [stdout] 466 |         name: &'static str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:467:9
[INFO] [stdout]     |
[INFO] [stdout] 467 |         len: usize,
[INFO] [stdout]     |         ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:468:9
[INFO] [stdout]     |
[INFO] [stdout] 468 |         visitor: V,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:476:33
[INFO] [stdout]     |
[INFO] [stdout] 476 |     fn deserialize_map<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:485:9
[INFO] [stdout]     |
[INFO] [stdout] 485 |         name: &'static str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fields`
[INFO] [stdout]    --> src/storage/keycode.rs:486:9
[INFO] [stdout]     |
[INFO] [stdout] 486 |         fields: &'static [&'static str],
[INFO] [stdout]     |         ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fields`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:487:9
[INFO] [stdout]     |
[INFO] [stdout] 487 |         visitor: V,
[INFO] [stdout]     |         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/storage/keycode.rs:497:9
[INFO] [stdout]     |
[INFO] [stdout] 497 |         name: &'static str,
[INFO] [stdout]     |         ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `variants`
[INFO] [stdout]    --> src/storage/keycode.rs:498:9
[INFO] [stdout]     |
[INFO] [stdout] 498 |         variants: &'static [&'static str],
[INFO] [stdout]     |         ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variants`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:507:40
[INFO] [stdout]     |
[INFO] [stdout] 507 |     fn deserialize_identifier<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                        ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:514:41
[INFO] [stdout]     |
[INFO] [stdout] 514 |     fn deserialize_ignored_any<V>(self, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keycode.rs:562:31
[INFO] [stdout]     |
[INFO] [stdout] 562 |     fn tuple_variant<V>(self, len: usize, visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                               ^^^ help: if this is intentional, prefix it with an underscore: `_len`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fields`
[INFO] [stdout]    --> src/storage/keycode.rs:569:32
[INFO] [stdout]     |
[INFO] [stdout] 569 |     fn struct_variant<V>(self, fields: &'static [&'static str], visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fields`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `visitor`
[INFO] [stdout]    --> src/storage/keycode.rs:569:65
[INFO] [stdout]     |
[INFO] [stdout] 569 |     fn struct_variant<V>(self, fields: &'static [&'static str], visitor: V) -> Result<V::Value>
[INFO] [stdout]     |                                                                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_visitor`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `std::result::Result` that must be used
[INFO] [stdout]   --> src/sql/engine/mod.rs:58:25
[INFO] [stdout]    |
[INFO] [stdout] 58 |                         txn.rollback();
[INFO] [stdout]    |                         ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 58 |                         let _ = txn.rollback();
[INFO] [stdout]    |                         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.71s
[INFO] running `Command { std: "docker" "inspect" "6a25bd0f8d5351bb1f9d289fd012ca5a305b4dfe8a03fa1d811f13c38032d3e8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6a25bd0f8d5351bb1f9d289fd012ca5a305b4dfe8a03fa1d811f13c38032d3e8", kill_on_drop: false }`
[INFO] [stdout] 6a25bd0f8d5351bb1f9d289fd012ca5a305b4dfe8a03fa1d811f13c38032d3e8