[INFO] cloning repository https://github.com/1517005260/my-sql-db
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/1517005260/my-sql-db" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1517005260%2Fmy-sql-db", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1517005260%2Fmy-sql-db'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 6505abd1c835c2c3648f4f294227463b356f3ad9
[INFO] building 1517005260/my-sql-db against master#ad211ced81509462cdfe4c29ed10f97279a0acae for pr-135216
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2F1517005260%2Fmy-sql-db" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/1517005260/my-sql-db on toolchain ad211ced81509462cdfe4c29ed10f97279a0acae
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/1517005260/my-sql-db
[INFO] finished tweaking git repo https://github.com/1517005260/my-sql-db
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] [stderr]       Adding colored v2.2.0 (available: v3.0.0)
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[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cd9268b05b9b32aca8d1cce0a3cef8ee8c78f3f6517bd24dc16aed1a03332d4d
[INFO] running `Command { std: "docker" "start" "-a" "cd9268b05b9b32aca8d1cce0a3cef8ee8c78f3f6517bd24dc16aed1a03332d4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cd9268b05b9b32aca8d1cce0a3cef8ee8c78f3f6517bd24dc16aed1a03332d4d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd9268b05b9b32aca8d1cce0a3cef8ee8c78f3f6517bd24dc16aed1a03332d4d", kill_on_drop: false }`
[INFO] [stdout] cd9268b05b9b32aca8d1cce0a3cef8ee8c78f3f6517bd24dc16aed1a03332d4d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 42488255261e4938772f7675fc4273cd5947f6b5ec18c291bcf8986ab1a4e35a
[INFO] running `Command { std: "docker" "start" "-a" "42488255261e4938772f7675fc4273cd5947f6b5ec18c291bcf8986ab1a4e35a", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.92
[INFO] [stderr]    Compiling unicode-ident v1.0.14
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[INFO] [stderr]    Compiling autocfg v1.4.0
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[INFO] [stderr]    Compiling rustix v0.38.43
[INFO] [stderr]    Compiling bitflags v2.6.0
[INFO] [stderr]    Compiling parking_lot_core v0.9.10
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[INFO] [stderr]    Compiling memchr v2.7.4
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[INFO] [stderr]    Compiling linux-raw-sys v0.4.14
[INFO] [stderr]    Compiling futures-sink v0.3.31
[INFO] [stderr]    Compiling futures-task v0.3.31
[INFO] [stderr]    Compiling serde v1.0.217
[INFO] [stderr]    Compiling cfg_aliases v0.2.1
[INFO] [stderr]    Compiling futures-channel v0.3.31
[INFO] [stderr]    Compiling futures-io v0.3.31
[INFO] [stderr]    Compiling rustversion v1.0.19
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]    Compiling nix v0.29.0
[INFO] [stderr]    Compiling bytes v1.9.0
[INFO] [stderr]    Compiling endian-type v0.1.2
[INFO] [stderr]    Compiling unicode-width v0.2.0
[INFO] [stderr]    Compiling fastrand v2.3.0
[INFO] [stderr]    Compiling once_cell v1.20.2
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[INFO] [stderr]    Compiling unicode-segmentation v1.12.0
[INFO] [stderr]    Compiling log v0.4.22
[INFO] [stderr]    Compiling utf8parse v0.2.2
[INFO] [stderr]    Compiling home v0.5.11
[INFO] [stderr]    Compiling heck v0.4.1
[INFO] [stderr]    Compiling colored v2.2.0
[INFO] [stderr]    Compiling strum v0.24.1
[INFO] [stderr]    Compiling lock_api v0.4.12
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]    Compiling radix_trie v0.2.1
[INFO] [stderr]    Compiling quote v1.0.38
[INFO] [stderr]    Compiling syn v2.0.95
[INFO] [stderr]    Compiling mio v1.0.3
[INFO] [stderr]    Compiling socket2 v0.5.8
[INFO] [stderr]    Compiling signal-hook-registry v1.4.2
[INFO] [stderr]    Compiling getrandom v0.2.15
[INFO] [stderr]    Compiling dirs-sys v0.3.7
[INFO] [stderr]    Compiling dirs v4.0.0
[INFO] [stderr]    Compiling parking_lot v0.12.3
[INFO] [stderr]    Compiling fd-lock v4.0.2
[INFO] [stderr]    Compiling tempfile v3.15.0
[INFO] [stderr]    Compiling fs4 v0.8.4
[INFO] [stderr]    Compiling strum_macros v0.24.3
[INFO] [stderr]    Compiling rustyline v15.0.0
[INFO] [stderr]    Compiling futures-macro v0.3.31
[INFO] [stderr]    Compiling serde_derive v1.0.217
[INFO] [stderr]    Compiling tokio-macros v2.4.0
[INFO] [stderr]    Compiling tokio v1.42.0
[INFO] [stderr]    Compiling futures-util v0.3.31
[INFO] [stderr]    Compiling futures-executor v0.3.31
[INFO] [stderr]    Compiling futures v0.3.31
[INFO] [stderr]    Compiling tokio-util v0.7.13
[INFO] [stderr]    Compiling tokio-stream v0.1.17
[INFO] [stderr]    Compiling serde_bytes v0.11.15
[INFO] [stderr]    Compiling bincode v1.3.3
[INFO] [stderr]    Compiling my-sql-db v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]  --> src/sql/executor/mod.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::cmp::max;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sql/executor/mutation.rs:120:25
[INFO] [stdout]     |
[INFO] [stdout] 120 |                     let mut primary_key = table.get_primary_key(&row)?;
[INFO] [stdout]     |                         ----^^^^^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sql/executor/query.rs:180:42
[INFO] [stdout]     |
[INFO] [stdout] 180 |             Ok(ResultSet::Scan {columns, mut rows}) => {
[INFO] [stdout]     |                                          ----^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sql/executor/query.rs:208:42
[INFO] [stdout]     |
[INFO] [stdout] 208 |             Ok(ResultSet::Scan {columns, mut rows}) => {
[INFO] [stdout]     |                                          ----^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]    --> src/sql/executor/calculate.rs:164:13
[INFO] [stdout]     |
[INFO] [stdout] 164 |         let pos = match cols.iter().position(|c| *c == *col_name) {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keyencode.rs:41:27
[INFO] [stdout]    |
[INFO] [stdout] 41 |     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/keyencode.rs:45:28
[INFO] [stdout]    |
[INFO] [stdout] 45 |     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/keyencode.rs:49:28
[INFO] [stdout]    |
[INFO] [stdout] 49 |     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/keyencode.rs:58:27
[INFO] [stdout]    |
[INFO] [stdout] 58 |     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/keyencode.rs:62:28
[INFO] [stdout]    |
[INFO] [stdout] 62 |     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/keyencode.rs:66:28
[INFO] [stdout]    |
[INFO] [stdout] 66 |     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/keyencode.rs:76:28
[INFO] [stdout]    |
[INFO] [stdout] 76 |     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/keyencode.rs:80:28
[INFO] [stdout]    |
[INFO] [stdout] 80 |     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/keyencode.rs:84:29
[INFO] [stdout]    |
[INFO] [stdout] 84 |     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: `value`
[INFO] [stdout]    --> src/storage/keyencode.rs:113:32
[INFO] [stdout]     |
[INFO] [stdout] 113 |     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/keyencode.rs:124:36
[INFO] [stdout]     |
[INFO] [stdout] 124 |     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/keyencode.rs:139:37
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn serialize_unit_variant(self, name: &'static str, variant_index: u32, variant: &'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: `variant`
[INFO] [stdout]    --> src/storage/keyencode.rs:139:77
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn serialize_unit_variant(self, name: &'static str, variant_index: u32, variant: &'static str) -> Result<()> {
[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/keyencode.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/keyencode.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/keyencode.rs:160:28
[INFO] [stdout]     |
[INFO] [stdout] 160 |     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/keyencode.rs:164:30
[INFO] [stdout]     |
[INFO] [stdout] 164 |     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/keyencode.rs:168:37
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn serialize_tuple_struct(self, name: &'static str, len: usize) -> Result<Self::SerializeTupleStruct> {
[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/keyencode.rs:168:57
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn serialize_tuple_struct(self, name: &'static str, len: usize) -> Result<Self::SerializeTupleStruct> {
[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/keyencode.rs:173:101
[INFO] [stdout]     |
[INFO] [stdout] 173 | ...ex: u32, variant: &'static str, len: usize) -> Result<Self::SerializeTupleVariant> {
[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/keyencode.rs:178:28
[INFO] [stdout]     |
[INFO] [stdout] 178 |     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/keyencode.rs:182:31
[INFO] [stdout]     |
[INFO] [stdout] 182 |     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/keyencode.rs:182:51
[INFO] [stdout]     |
[INFO] [stdout] 182 |     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/keyencode.rs:186:39
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn serialize_struct_variant(self, name: &'static str, variant_index: u32, variant: &'static str, len: usize) -> Result<Self::Serializ...
[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/keyencode.rs:186:59
[INFO] [stdout]     |
[INFO] [stdout] 186 | ..., name: &'static str, variant_index: u32, variant: &'static str, len: usize) -> Result<Self::SerializeStructVariant> {
[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/keyencode.rs:186:79
[INFO] [stdout]     |
[INFO] [stdout] 186 | ...ic str, variant_index: u32, variant: &'static str, len: usize) -> Result<Self::SerializeStructVariant> {
[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/keyencode.rs:186:102
[INFO] [stdout]     |
[INFO] [stdout] 186 | ...ex: u32, variant: &'static str, len: usize) -> Result<Self::SerializeStructVariant> {
[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/keyencode.rs:285:33
[INFO] [stdout]     |
[INFO] [stdout] 285 |     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/keyencode.rs:302:32
[INFO] [stdout]     |
[INFO] [stdout] 302 |     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/keyencode.rs:309:33
[INFO] [stdout]     |
[INFO] [stdout] 309 |     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/keyencode.rs:316:33
[INFO] [stdout]     |
[INFO] [stdout] 316 |     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/keyencode.rs:332:32
[INFO] [stdout]     |
[INFO] [stdout] 332 |     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/keyencode.rs:339:33
[INFO] [stdout]     |
[INFO] [stdout] 339 |     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/keyencode.rs:346:33
[INFO] [stdout]     |
[INFO] [stdout] 346 |     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/keyencode.rs:364:33
[INFO] [stdout]     |
[INFO] [stdout] 364 |     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/keyencode.rs:371:33
[INFO] [stdout]     |
[INFO] [stdout] 371 |     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/keyencode.rs:378:34
[INFO] [stdout]     |
[INFO] [stdout] 378 |     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/keyencode.rs:393:36
[INFO] [stdout]     |
[INFO] [stdout] 393 |     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/keyencode.rs:414:36
[INFO] [stdout]     |
[INFO] [stdout] 414 |     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/keyencode.rs:421:34
[INFO] [stdout]     |
[INFO] [stdout] 421 |     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/keyencode.rs:428:41
[INFO] [stdout]     |
[INFO] [stdout] 428 |     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/keyencode.rs:428:61
[INFO] [stdout]     |
[INFO] [stdout] 428 |     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/keyencode.rs:435:44
[INFO] [stdout]     |
[INFO] [stdout] 435 |     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/keyencode.rs:435:64
[INFO] [stdout]     |
[INFO] [stdout] 435 |     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/keyencode.rs:449:35
[INFO] [stdout]     |
[INFO] [stdout] 449 |     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/keyencode.rs:456:42
[INFO] [stdout]     |
[INFO] [stdout] 456 |     fn deserialize_tuple_struct<V>(self, name: &'static str, len: usize, 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: `len`
[INFO] [stdout]    --> src/storage/keyencode.rs:456:62
[INFO] [stdout]     |
[INFO] [stdout] 456 |     fn deserialize_tuple_struct<V>(self, name: &'static str, 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: `visitor`
[INFO] [stdout]    --> src/storage/keyencode.rs:456:74
[INFO] [stdout]     |
[INFO] [stdout] 456 |     fn deserialize_tuple_struct<V>(self, name: &'static str, len: usize, 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/keyencode.rs:463:33
[INFO] [stdout]     |
[INFO] [stdout] 463 |     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/keyencode.rs:470:36
[INFO] [stdout]     |
[INFO] [stdout] 470 |     fn deserialize_struct<V>(self, name: &'static str, fields: &'static [&'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: `fields`
[INFO] [stdout]    --> src/storage/keyencode.rs:470:56
[INFO] [stdout]     |
[INFO] [stdout] 470 |     fn deserialize_struct<V>(self, name: &'static str, 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/keyencode.rs:470:89
[INFO] [stdout]     |
[INFO] [stdout] 470 |     fn deserialize_struct<V>(self, name: &'static str, 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 variable: `name`
[INFO] [stdout]    --> src/storage/keyencode.rs:477:34
[INFO] [stdout]     |
[INFO] [stdout] 477 |     fn deserialize_enum<V>(self, name: &'static str, variants: &'static [&'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: `variants`
[INFO] [stdout]    --> src/storage/keyencode.rs:477:54
[INFO] [stdout]     |
[INFO] [stdout] 477 |     fn deserialize_enum<V>(self, name: &'static str, variants: &'static [&'static str], visitor: V) -> Result<V::Value>
[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/keyencode.rs:484:40
[INFO] [stdout]     |
[INFO] [stdout] 484 |     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/keyencode.rs:491:41
[INFO] [stdout]     |
[INFO] [stdout] 491 |     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/keyencode.rs:539:31
[INFO] [stdout]     |
[INFO] [stdout] 539 |     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/keyencode.rs:546:32
[INFO] [stdout]     |
[INFO] [stdout] 546 |     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/keyencode.rs:546:65
[INFO] [stdout]     |
[INFO] [stdout] 546 |     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: hidden lifetime parameters in types are deprecated
[INFO] [stdout]   --> src/bin/server.rs:32:34
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn new(engine: MutexGuard<E>) -> Result<Self>{
[INFO] [stdout]    |                        ----------^-- expected lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/bin/server.rs:1:9
[INFO] [stdout]    |
[INFO] [stdout] 1  | #![warn(rust_2018_idioms)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(elided_lifetimes_in_paths)]` implied by `#[warn(rust_2018_idioms)]`
[INFO] [stdout] help: indicate the anonymous lifetime
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn new(engine: MutexGuard<'_, E>) -> Result<Self>{
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `ListTables` and `TableInfo` are never constructed
[INFO] [stdout]   --> src/bin/server.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | enum Request{
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 23 |     ListTables,    // show tables命令
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 24 |     TableInfo(String),  // show table table_name 命令
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 33.80s
[INFO] running `Command { std: "docker" "inspect" "42488255261e4938772f7675fc4273cd5947f6b5ec18c291bcf8986ab1a4e35a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "42488255261e4938772f7675fc4273cd5947f6b5ec18c291bcf8986ab1a4e35a", kill_on_drop: false }`
[INFO] [stdout] 42488255261e4938772f7675fc4273cd5947f6b5ec18c291bcf8986ab1a4e35a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+ad211ced81509462cdfe4c29ed10f97279a0acae" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8c04a3cfc85c956ebadb7d342e1bc3c1f67316bd037d6d498f2bc755719d0cc2
[INFO] running `Command { std: "docker" "start" "-a" "8c04a3cfc85c956ebadb7d342e1bc3c1f67316bd037d6d498f2bc755719d0cc2", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]  --> src/sql/executor/mod.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::cmp::max;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sql/executor/mutation.rs:120:25
[INFO] [stdout]     |
[INFO] [stdout] 120 |                     let mut primary_key = table.get_primary_key(&row)?;
[INFO] [stdout]     |                         ----^^^^^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sql/executor/query.rs:180:42
[INFO] [stdout]     |
[INFO] [stdout] 180 |             Ok(ResultSet::Scan {columns, mut rows}) => {
[INFO] [stdout]     |                                          ----^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sql/executor/query.rs:208:42
[INFO] [stdout]     |
[INFO] [stdout] 208 |             Ok(ResultSet::Scan {columns, mut rows}) => {
[INFO] [stdout]     |                                          ----^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]    --> src/sql/executor/calculate.rs:164:13
[INFO] [stdout]     |
[INFO] [stdout] 164 |         let pos = match cols.iter().position(|c| *c == *col_name) {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keyencode.rs:41:27
[INFO] [stdout]    |
[INFO] [stdout] 41 |     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/keyencode.rs:45:28
[INFO] [stdout]    |
[INFO] [stdout] 45 |     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/keyencode.rs:49:28
[INFO] [stdout]    |
[INFO] [stdout] 49 |     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/keyencode.rs:58:27
[INFO] [stdout]    |
[INFO] [stdout] 58 |     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/keyencode.rs:62:28
[INFO] [stdout]    |
[INFO] [stdout] 62 |     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/keyencode.rs:66:28
[INFO] [stdout]    |
[INFO] [stdout] 66 |     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/keyencode.rs:76:28
[INFO] [stdout]    |
[INFO] [stdout] 76 |     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/keyencode.rs:80:28
[INFO] [stdout]    |
[INFO] [stdout] 80 |     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/keyencode.rs:84:29
[INFO] [stdout]    |
[INFO] [stdout] 84 |     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: `value`
[INFO] [stdout]    --> src/storage/keyencode.rs:113:32
[INFO] [stdout]     |
[INFO] [stdout] 113 |     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/keyencode.rs:124:36
[INFO] [stdout]     |
[INFO] [stdout] 124 |     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/keyencode.rs:139:37
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn serialize_unit_variant(self, name: &'static str, variant_index: u32, variant: &'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: `variant`
[INFO] [stdout]    --> src/storage/keyencode.rs:139:77
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn serialize_unit_variant(self, name: &'static str, variant_index: u32, variant: &'static str) -> Result<()> {
[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/keyencode.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/keyencode.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/keyencode.rs:160:28
[INFO] [stdout]     |
[INFO] [stdout] 160 |     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/keyencode.rs:164:30
[INFO] [stdout]     |
[INFO] [stdout] 164 |     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/keyencode.rs:168:37
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn serialize_tuple_struct(self, name: &'static str, len: usize) -> Result<Self::SerializeTupleStruct> {
[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/keyencode.rs:168:57
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn serialize_tuple_struct(self, name: &'static str, len: usize) -> Result<Self::SerializeTupleStruct> {
[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/keyencode.rs:173:101
[INFO] [stdout]     |
[INFO] [stdout] 173 | ...ex: u32, variant: &'static str, len: usize) -> Result<Self::SerializeTupleVariant> {
[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/keyencode.rs:178:28
[INFO] [stdout]     |
[INFO] [stdout] 178 |     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/keyencode.rs:182:31
[INFO] [stdout]     |
[INFO] [stdout] 182 |     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/keyencode.rs:182:51
[INFO] [stdout]     |
[INFO] [stdout] 182 |     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/keyencode.rs:186:39
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn serialize_struct_variant(self, name: &'static str, variant_index: u32, variant: &'static str, len: usize) -> Result<Self::Serializ...
[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/keyencode.rs:186:59
[INFO] [stdout]     |
[INFO] [stdout] 186 | ..., name: &'static str, variant_index: u32, variant: &'static str, len: usize) -> Result<Self::SerializeStructVariant> {
[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/keyencode.rs:186:79
[INFO] [stdout]     |
[INFO] [stdout] 186 | ...ic str, variant_index: u32, variant: &'static str, len: usize) -> Result<Self::SerializeStructVariant> {
[INFO] [stdout]     |                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_variant`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling my-sql-db v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `len`
[INFO] [stdout]    --> src/storage/keyencode.rs:186:102
[INFO] [stdout]     |
[INFO] [stdout] 186 | ...ex: u32, variant: &'static str, len: usize) -> Result<Self::SerializeStructVariant> {
[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/keyencode.rs:285:33
[INFO] [stdout]     |
[INFO] [stdout] 285 |     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/keyencode.rs:302:32
[INFO] [stdout]     |
[INFO] [stdout] 302 |     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/keyencode.rs:309:33
[INFO] [stdout]     |
[INFO] [stdout] 309 |     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/keyencode.rs:316:33
[INFO] [stdout]     |
[INFO] [stdout] 316 |     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/keyencode.rs:332:32
[INFO] [stdout]     |
[INFO] [stdout] 332 |     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/keyencode.rs:339:33
[INFO] [stdout]     |
[INFO] [stdout] 339 |     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/keyencode.rs:346:33
[INFO] [stdout]     |
[INFO] [stdout] 346 |     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/keyencode.rs:364:33
[INFO] [stdout]     |
[INFO] [stdout] 364 |     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/keyencode.rs:371:33
[INFO] [stdout]     |
[INFO] [stdout] 371 |     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/keyencode.rs:378:34
[INFO] [stdout]     |
[INFO] [stdout] 378 |     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/keyencode.rs:393:36
[INFO] [stdout]     |
[INFO] [stdout] 393 |     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/keyencode.rs:414:36
[INFO] [stdout]     |
[INFO] [stdout] 414 |     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/keyencode.rs:421:34
[INFO] [stdout]     |
[INFO] [stdout] 421 |     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/keyencode.rs:428:41
[INFO] [stdout]     |
[INFO] [stdout] 428 |     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/keyencode.rs:428:61
[INFO] [stdout]     |
[INFO] [stdout] 428 |     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/keyencode.rs:435:44
[INFO] [stdout]     |
[INFO] [stdout] 435 |     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/keyencode.rs:435:64
[INFO] [stdout]     |
[INFO] [stdout] 435 |     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/keyencode.rs:449:35
[INFO] [stdout]     |
[INFO] [stdout] 449 |     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/keyencode.rs:456:42
[INFO] [stdout]     |
[INFO] [stdout] 456 |     fn deserialize_tuple_struct<V>(self, name: &'static str, len: usize, 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: `len`
[INFO] [stdout]    --> src/storage/keyencode.rs:456:62
[INFO] [stdout]     |
[INFO] [stdout] 456 |     fn deserialize_tuple_struct<V>(self, name: &'static str, 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: `visitor`
[INFO] [stdout]    --> src/storage/keyencode.rs:456:74
[INFO] [stdout]     |
[INFO] [stdout] 456 |     fn deserialize_tuple_struct<V>(self, name: &'static str, len: usize, 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/keyencode.rs:463:33
[INFO] [stdout]     |
[INFO] [stdout] 463 |     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/keyencode.rs:470:36
[INFO] [stdout]     |
[INFO] [stdout] 470 |     fn deserialize_struct<V>(self, name: &'static str, fields: &'static [&'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: `fields`
[INFO] [stdout]    --> src/storage/keyencode.rs:470:56
[INFO] [stdout]     |
[INFO] [stdout] 470 |     fn deserialize_struct<V>(self, name: &'static str, 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/keyencode.rs:470:89
[INFO] [stdout]     |
[INFO] [stdout] 470 |     fn deserialize_struct<V>(self, name: &'static str, 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 variable: `name`
[INFO] [stdout]    --> src/storage/keyencode.rs:477:34
[INFO] [stdout]     |
[INFO] [stdout] 477 |     fn deserialize_enum<V>(self, name: &'static str, variants: &'static [&'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: `variants`
[INFO] [stdout]    --> src/storage/keyencode.rs:477:54
[INFO] [stdout]     |
[INFO] [stdout] 477 |     fn deserialize_enum<V>(self, name: &'static str, variants: &'static [&'static str], visitor: V) -> Result<V::Value>
[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/keyencode.rs:484:40
[INFO] [stdout]     |
[INFO] [stdout] 484 |     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/keyencode.rs:491:41
[INFO] [stdout]     |
[INFO] [stdout] 491 |     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/keyencode.rs:539:31
[INFO] [stdout]     |
[INFO] [stdout] 539 |     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/keyencode.rs:546:32
[INFO] [stdout]     |
[INFO] [stdout] 546 |     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/keyencode.rs:546:65
[INFO] [stdout]     |
[INFO] [stdout] 546 |     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: hidden lifetime parameters in types are deprecated
[INFO] [stdout]   --> src/bin/server.rs:32:34
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn new(engine: MutexGuard<E>) -> Result<Self>{
[INFO] [stdout]    |                        ----------^-- expected lifetime parameter
[INFO] [stdout]    |
[INFO] [stdout] note: the lint level is defined here
[INFO] [stdout]   --> src/bin/server.rs:1:9
[INFO] [stdout]    |
[INFO] [stdout] 1  | #![warn(rust_2018_idioms)]
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^
[INFO] [stdout]    = note: `#[warn(elided_lifetimes_in_paths)]` implied by `#[warn(rust_2018_idioms)]`
[INFO] [stdout] help: indicate the anonymous lifetime
[INFO] [stdout]    |
[INFO] [stdout] 32 |     pub fn new(engine: MutexGuard<'_, E>) -> Result<Self>{
[INFO] [stdout]    |                                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `ListTables` and `TableInfo` are never constructed
[INFO] [stdout]   --> src/bin/server.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 20 | enum Request{
[INFO] [stdout]    |      ------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 23 |     ListTables,    // show tables命令
[INFO] [stdout]    |     ^^^^^^^^^^
[INFO] [stdout] 24 |     TableInfo(String),  // show table table_name 命令
[INFO] [stdout]    |     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cmp::max`
[INFO] [stdout]  --> src/sql/executor/mod.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use std::cmp::max;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sql/executor/mutation.rs:120:25
[INFO] [stdout]     |
[INFO] [stdout] 120 |                     let mut primary_key = table.get_primary_key(&row)?;
[INFO] [stdout]     |                         ----^^^^^^^^^^^
[INFO] [stdout]     |                         |
[INFO] [stdout]     |                         help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sql/executor/query.rs:180:42
[INFO] [stdout]     |
[INFO] [stdout] 180 |             Ok(ResultSet::Scan {columns, mut rows}) => {
[INFO] [stdout]     |                                          ----^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/sql/executor/query.rs:208:42
[INFO] [stdout]     |
[INFO] [stdout] 208 |             Ok(ResultSet::Scan {columns, mut rows}) => {
[INFO] [stdout]     |                                          ----^^^^
[INFO] [stdout]     |                                          |
[INFO] [stdout]     |                                          help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pos`
[INFO] [stdout]    --> src/sql/executor/calculate.rs:164:13
[INFO] [stdout]     |
[INFO] [stdout] 164 |         let pos = match cols.iter().position(|c| *c == *col_name) {
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_pos`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/storage/mvcc.rs:319:13
[INFO] [stdout]     |
[INFO] [stdout] 319 |         let mut transaction2 = mvcc.begin()?;
[INFO] [stdout]     |             ----^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/storage/mvcc.rs:426:13
[INFO] [stdout]     |
[INFO] [stdout] 426 |         let mut transaction1 = mvcc.begin()?;
[INFO] [stdout]     |             ----^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/storage/mvcc.rs:664:13
[INFO] [stdout]     |
[INFO] [stdout] 664 |         let mut transaction1 = mvcc.begin()?;
[INFO] [stdout]     |             ----^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/storage/mvcc.rs:691:13
[INFO] [stdout]     |
[INFO] [stdout] 691 |         let mut transaction1 = mvcc.begin()?;
[INFO] [stdout]     |             ----^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/storage/mvcc.rs:720:13
[INFO] [stdout]     |
[INFO] [stdout] 720 |         let mut transaction1 = mvcc.begin()?;
[INFO] [stdout]     |             ----^^^^^^^^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `eng`
[INFO] [stdout]    --> src/storage/disk.rs:247:13
[INFO] [stdout]     |
[INFO] [stdout] 247 |         let eng = DiskEngine::new(PathBuf::from("./tmp/sqldb-log-test"))?;
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_eng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `eng`
[INFO] [stdout]    --> src/storage/disk.rs:253:13
[INFO] [stdout]     |
[INFO] [stdout] 253 |         let eng = DiskEngine::new_compact(PathBuf::from("./tmp/sqldb-log"))?;
[INFO] [stdout]     |             ^^^ help: if this is intentional, prefix it with an underscore: `_eng`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `v`
[INFO] [stdout]   --> src/storage/keyencode.rs:41:27
[INFO] [stdout]    |
[INFO] [stdout] 41 |     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/keyencode.rs:45:28
[INFO] [stdout]    |
[INFO] [stdout] 45 |     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/keyencode.rs:49:28
[INFO] [stdout]    |
[INFO] [stdout] 49 |     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/keyencode.rs:58:27
[INFO] [stdout]    |
[INFO] [stdout] 58 |     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/keyencode.rs:62:28
[INFO] [stdout]    |
[INFO] [stdout] 62 |     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/keyencode.rs:66:28
[INFO] [stdout]    |
[INFO] [stdout] 66 |     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/keyencode.rs:76:28
[INFO] [stdout]    |
[INFO] [stdout] 76 |     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/keyencode.rs:80:28
[INFO] [stdout]    |
[INFO] [stdout] 80 |     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/keyencode.rs:84:29
[INFO] [stdout]    |
[INFO] [stdout] 84 |     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: `value`
[INFO] [stdout]    --> src/storage/keyencode.rs:113:32
[INFO] [stdout]     |
[INFO] [stdout] 113 |     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/keyencode.rs:124:36
[INFO] [stdout]     |
[INFO] [stdout] 124 |     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/keyencode.rs:139:37
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn serialize_unit_variant(self, name: &'static str, variant_index: u32, variant: &'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: `variant`
[INFO] [stdout]    --> src/storage/keyencode.rs:139:77
[INFO] [stdout]     |
[INFO] [stdout] 139 |     fn serialize_unit_variant(self, name: &'static str, variant_index: u32, variant: &'static str) -> Result<()> {
[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/keyencode.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/keyencode.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/keyencode.rs:160:28
[INFO] [stdout]     |
[INFO] [stdout] 160 |     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/keyencode.rs:164:30
[INFO] [stdout]     |
[INFO] [stdout] 164 |     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/keyencode.rs:168:37
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn serialize_tuple_struct(self, name: &'static str, len: usize) -> Result<Self::SerializeTupleStruct> {
[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/keyencode.rs:168:57
[INFO] [stdout]     |
[INFO] [stdout] 168 |     fn serialize_tuple_struct(self, name: &'static str, len: usize) -> Result<Self::SerializeTupleStruct> {
[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/keyencode.rs:173:101
[INFO] [stdout]     |
[INFO] [stdout] 173 | ...ex: u32, variant: &'static str, len: usize) -> Result<Self::SerializeTupleVariant> {
[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/keyencode.rs:178:28
[INFO] [stdout]     |
[INFO] [stdout] 178 |     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/keyencode.rs:182:31
[INFO] [stdout]     |
[INFO] [stdout] 182 |     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/keyencode.rs:182:51
[INFO] [stdout]     |
[INFO] [stdout] 182 |     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/keyencode.rs:186:39
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn serialize_struct_variant(self, name: &'static str, variant_index: u32, variant: &'static str, len: usize) -> Result<Self::Serializ...
[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/keyencode.rs:186:59
[INFO] [stdout]     |
[INFO] [stdout] 186 | ..., name: &'static str, variant_index: u32, variant: &'static str, len: usize) -> Result<Self::SerializeStructVariant> {
[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/keyencode.rs:186:79
[INFO] [stdout]     |
[INFO] [stdout] 186 | ...ic str, variant_index: u32, variant: &'static str, len: usize) -> Result<Self::SerializeStructVariant> {
[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/keyencode.rs:186:102
[INFO] [stdout]     |
[INFO] [stdout] 186 | ...ex: u32, variant: &'static str, len: usize) -> Result<Self::SerializeStructVariant> {
[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/keyencode.rs:285:33
[INFO] [stdout]     |
[INFO] [stdout] 285 |     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/keyencode.rs:302:32
[INFO] [stdout]     |
[INFO] [stdout] 302 |     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/keyencode.rs:309:33
[INFO] [stdout]     |
[INFO] [stdout] 309 |     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/keyencode.rs:316:33
[INFO] [stdout]     |
[INFO] [stdout] 316 |     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/keyencode.rs:332:32
[INFO] [stdout]     |
[INFO] [stdout] 332 |     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/keyencode.rs:339:33
[INFO] [stdout]     |
[INFO] [stdout] 339 |     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/keyencode.rs:346:33
[INFO] [stdout]     |
[INFO] [stdout] 346 |     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/keyencode.rs:364:33
[INFO] [stdout]     |
[INFO] [stdout] 364 |     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/keyencode.rs:371:33
[INFO] [stdout]     |
[INFO] [stdout] 371 |     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/keyencode.rs:378:34
[INFO] [stdout]     |
[INFO] [stdout] 378 |     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/keyencode.rs:393:36
[INFO] [stdout]     |
[INFO] [stdout] 393 |     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/keyencode.rs:414:36
[INFO] [stdout]     |
[INFO] [stdout] 414 |     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/keyencode.rs:421:34
[INFO] [stdout]     |
[INFO] [stdout] 421 |     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/keyencode.rs:428:41
[INFO] [stdout]     |
[INFO] [stdout] 428 |     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/keyencode.rs:428:61
[INFO] [stdout]     |
[INFO] [stdout] 428 |     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/keyencode.rs:435:44
[INFO] [stdout]     |
[INFO] [stdout] 435 |     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/keyencode.rs:435:64
[INFO] [stdout]     |
[INFO] [stdout] 435 |     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/keyencode.rs:449:35
[INFO] [stdout]     |
[INFO] [stdout] 449 |     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/keyencode.rs:456:42
[INFO] [stdout]     |
[INFO] [stdout] 456 |     fn deserialize_tuple_struct<V>(self, name: &'static str, len: usize, 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: `len`
[INFO] [stdout]    --> src/storage/keyencode.rs:456:62
[INFO] [stdout]     |
[INFO] [stdout] 456 |     fn deserialize_tuple_struct<V>(self, name: &'static str, 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: `visitor`
[INFO] [stdout]    --> src/storage/keyencode.rs:456:74
[INFO] [stdout]     |
[INFO] [stdout] 456 |     fn deserialize_tuple_struct<V>(self, name: &'static str, len: usize, 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/keyencode.rs:463:33
[INFO] [stdout]     |
[INFO] [stdout] 463 |     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/keyencode.rs:470:36
[INFO] [stdout]     |
[INFO] [stdout] 470 |     fn deserialize_struct<V>(self, name: &'static str, fields: &'static [&'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: `fields`
[INFO] [stdout]    --> src/storage/keyencode.rs:470:56
[INFO] [stdout]     |
[INFO] [stdout] 470 |     fn deserialize_struct<V>(self, name: &'static str, 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/keyencode.rs:470:89
[INFO] [stdout]     |
[INFO] [stdout] 470 |     fn deserialize_struct<V>(self, name: &'static str, 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 variable: `name`
[INFO] [stdout]    --> src/storage/keyencode.rs:477:34
[INFO] [stdout]     |
[INFO] [stdout] 477 |     fn deserialize_enum<V>(self, name: &'static str, variants: &'static [&'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: `variants`
[INFO] [stdout]    --> src/storage/keyencode.rs:477:54
[INFO] [stdout]     |
[INFO] [stdout] 477 |     fn deserialize_enum<V>(self, name: &'static str, variants: &'static [&'static str], visitor: V) -> Result<V::Value>
[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/keyencode.rs:484:40
[INFO] [stdout]     |
[INFO] [stdout] 484 |     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/keyencode.rs:491:41
[INFO] [stdout]     |
[INFO] [stdout] 491 |     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/keyencode.rs:539:31
[INFO] [stdout]     |
[INFO] [stdout] 539 |     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/keyencode.rs:546:32
[INFO] [stdout]     |
[INFO] [stdout] 546 |     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/keyencode.rs:546:65
[INFO] [stdout]     |
[INFO] [stdout] 546 |     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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 3.39s
[INFO] running `Command { std: "docker" "inspect" "8c04a3cfc85c956ebadb7d342e1bc3c1f67316bd037d6d498f2bc755719d0cc2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8c04a3cfc85c956ebadb7d342e1bc3c1f67316bd037d6d498f2bc755719d0cc2", kill_on_drop: false }`
[INFO] [stdout] 8c04a3cfc85c956ebadb7d342e1bc3c1f67316bd037d6d498f2bc755719d0cc2
