[INFO] cloning repository https://github.com/eR3R3/rusty-db
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/eR3R3/rusty-db" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FeR3R3%2Frusty-db", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FeR3R3%2Frusty-db'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] ec2eec9b4653a635679545d5c8460931c7785d30
[INFO] checking eR3R3/rusty-db against try#446cb600aa4837dd6c513f14fa0d25a909b177d7 for pr-149195
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FeR3R3%2Frusty-db" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/eR3R3/rusty-db
[INFO] finished tweaking git repo https://github.com/eR3R3/rusty-db
[INFO] tweaked toml for git repo https://github.com/eR3R3/rusty-db written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/eR3R3/rusty-db on toolchain 446cb600aa4837dd6c513f14fa0d25a909b177d7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/eR3R3/rusty-db already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[ERROR] error running command: no output for 300 seconds
[INFO] checking eR3R3/rusty-db against try#446cb600aa4837dd6c513f14fa0d25a909b177d7 for pr-149195
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FeR3R3%2Frusty-db" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/eR3R3/rusty-db
[INFO] finished tweaking git repo https://github.com/eR3R3/rusty-db
[INFO] tweaked toml for git repo https://github.com/eR3R3/rusty-db written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/eR3R3/rusty-db on toolchain 446cb600aa4837dd6c513f14fa0d25a909b177d7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/eR3R3/rusty-db already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c375b2d3df077a67fe5144a4e326ae126fd64ae5c0c1ffdd1333f90ec3a05d73
[INFO] running `Command { std: "docker" "start" "-a" "c375b2d3df077a67fe5144a4e326ae126fd64ae5c0c1ffdd1333f90ec3a05d73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c375b2d3df077a67fe5144a4e326ae126fd64ae5c0c1ffdd1333f90ec3a05d73", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c375b2d3df077a67fe5144a4e326ae126fd64ae5c0c1ffdd1333f90ec3a05d73", kill_on_drop: false }`
[INFO] [stdout] c375b2d3df077a67fe5144a4e326ae126fd64ae5c0c1ffdd1333f90ec3a05d73
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:94a0c148923f5b2b52a63ef0eeb1882ad339ab61bce784c8077cbe41c61feb6c" "/opt/rustwide/cargo-home/bin/cargo" "+446cb600aa4837dd6c513f14fa0d25a909b177d7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 492e336a0f9d600b597fc26171ea0826d423da51097a8c49a9eeac2dbfddf470
[INFO] running `Command { std: "docker" "start" "-a" "492e336a0f9d600b597fc26171ea0826d423da51097a8c49a9eeac2dbfddf470", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.94
[INFO] [stderr]    Compiling serde v1.0.218
[INFO] [stderr]     Checking clap_builder v4.5.31
[INFO] [stderr]    Compiling quote v1.0.39
[INFO] [stderr]    Compiling syn v2.0.99
[INFO] [stderr]    Compiling serde_derive v1.0.218
[INFO] [stderr]    Compiling clap_derive v4.5.28
[INFO] [stderr]    Compiling thiserror-impl v2.0.12
[INFO] [stderr]     Checking thiserror v2.0.12
[INFO] [stderr]     Checking clap v4.5.31
[INFO] [stderr]     Checking bincode v1.3.3
[INFO] [stderr]     Checking db v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `file_size`
[INFO] [stdout]   --> src/database/storage_engine.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let file_size = file.read(&mut buffer)?;
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/database/executor.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut table = self
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Table` is never constructed
[INFO] [stdout]  --> src/database/schema.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Table {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Row` is never constructed
[INFO] [stdout]   --> src/database/schema.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Row {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StorageEngine` is never constructed
[INFO] [stdout]   --> src/database/storage_engine.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct StorageEngine {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `create_table`, `insert_row`, `serialize`, and `deserialize` are never used
[INFO] [stdout]   --> src/database/storage_engine.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl StorageEngine {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 16 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn create_table(&mut self, name: &str, columns: Vec<String>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn insert_row(&mut self, name: &str, row: Row) -> Result<(), String> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn serialize(&self, buffer: &mut Vec<u8>) -> Result<(), std::io::Error> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn deserialize(buffer: &[u8]) -> Result<Self, bincode::Error> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FileSystem` is never constructed
[INFO] [stdout]   --> src/database/storage_engine.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub struct FileSystem {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `read_from_file` are never used
[INFO] [stdout]   --> src/database/storage_engine.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | impl FileSystem {
[INFO] [stdout]    | --------------- associated functions in this implementation
[INFO] [stdout] 59 |     fn new(file_path: &str) -> Result<Self, Error> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn read_from_file(file_path: &str) -> Result<StorageEngine, Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ExecutionEngine` is never constructed
[INFO] [stdout]  --> src/database/executor.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct ExecutionEngine {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `file_size`
[INFO] [stdout]   --> src/database/storage_engine.rs:80:13
[INFO] [stdout]    |
[INFO] [stdout] 80 |         let file_size = file.read(&mut buffer)?;
[INFO] [stdout]    |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_file_size`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `execute` are never used
[INFO] [stdout]   --> src/database/executor.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl ExecutionEngine {
[INFO] [stdout]    | -------------------- associated items in this implementation
[INFO] [stdout] 12 |     pub fn new(storage_engine: StorageEngine) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn execute(&self, query_plan: QueryPlan) -> Result<Vec<Row>, Error> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Identifier` is never constructed
[INFO] [stdout]  --> src/database/query.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Identifier(pub(crate) String);
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `QueryPlan` is never constructed
[INFO] [stdout]   --> src/database/query.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct QueryPlan {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_table_name` is never used
[INFO] [stdout]   --> src/database/query.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl QueryPlan {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 17 |     pub fn get_table_name(&self) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `QueryPlanner` is never constructed
[INFO] [stdout]   --> src/database/query.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct QueryPlanner {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `plan` are never used
[INFO] [stdout]   --> src/database/query.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl QueryPlanner {
[INFO] [stdout]    | ----------------- associated functions in this implementation
[INFO] [stdout] 27 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn plan() {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Token` is never used
[INFO] [stdout]  --> src/database/parser.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum Token {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ASTNode` is never used
[INFO] [stdout]   --> src/database/parser.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub enum ASTNode {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Parser` is never constructed
[INFO] [stdout]   --> src/database/parser.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Parser {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `parse_select_statement`, and `next_token` are never used
[INFO] [stdout]   --> src/database/parser.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Parser {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 31 |     pub fn new(token: Vec<Token>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn parse_select_statement(&mut self) -> Result<ASTNode, Error> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     fn next_token(&mut self) -> Token {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Error` is never used
[INFO] [stdout]  --> src/error.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum Error {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ExecutionError` is never used
[INFO] [stdout]   --> src/error.rs:20:10
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub enum ExecutionError{
[INFO] [stdout]    |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]  --> src/pool.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct ThreadPool {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 9 |     workers: Vec<JoinHandle<()>>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/database/executor.rs:17:13
[INFO] [stdout]    |
[INFO] [stdout] 17 |         let mut table = self
[INFO] [stdout]    |             ----^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Table` is never constructed
[INFO] [stdout]  --> src/database/schema.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Table {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Row` is never constructed
[INFO] [stdout]   --> src/database/schema.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct Row {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StorageEngine` is never constructed
[INFO] [stdout]   --> src/database/storage_engine.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct StorageEngine {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `create_table`, `insert_row`, `serialize`, and `deserialize` are never used
[INFO] [stdout]   --> src/database/storage_engine.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 15 | impl StorageEngine {
[INFO] [stdout]    | ------------------ associated items in this implementation
[INFO] [stdout] 16 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 22 |     pub fn create_table(&mut self, name: &str, columns: Vec<String>) {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 26 |     pub fn insert_row(&mut self, name: &str, row: Row) -> Result<(), String> {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn serialize(&self, buffer: &mut Vec<u8>) -> Result<(), std::io::Error> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     pub fn deserialize(buffer: &[u8]) -> Result<Self, bincode::Error> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FileSystem` is never constructed
[INFO] [stdout]   --> src/database/storage_engine.rs:53:12
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub struct FileSystem {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `read_from_file` are never used
[INFO] [stdout]   --> src/database/storage_engine.rs:59:8
[INFO] [stdout]    |
[INFO] [stdout] 58 | impl FileSystem {
[INFO] [stdout]    | --------------- associated functions in this implementation
[INFO] [stdout] 59 |     fn new(file_path: &str) -> Result<Self, Error> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 77 |     fn read_from_file(file_path: &str) -> Result<StorageEngine, Error> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ExecutionEngine` is never constructed
[INFO] [stdout]  --> src/database/executor.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct ExecutionEngine {
[INFO] [stdout]   |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new` and `execute` are never used
[INFO] [stdout]   --> src/database/executor.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl ExecutionEngine {
[INFO] [stdout]    | -------------------- associated items in this implementation
[INFO] [stdout] 12 |     pub fn new(storage_engine: StorageEngine) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 16 |     pub fn execute(&self, query_plan: QueryPlan) -> Result<Vec<Row>, Error> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Identifier` is never constructed
[INFO] [stdout]  --> src/database/query.rs:2:12
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Identifier(pub(crate) String);
[INFO] [stdout]   |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `QueryPlan` is never constructed
[INFO] [stdout]   --> src/database/query.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub struct QueryPlan {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_table_name` is never used
[INFO] [stdout]   --> src/database/query.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 16 | impl QueryPlan {
[INFO] [stdout]    | -------------- method in this implementation
[INFO] [stdout] 17 |     pub fn get_table_name(&self) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `QueryPlanner` is never constructed
[INFO] [stdout]   --> src/database/query.rs:22:12
[INFO] [stdout]    |
[INFO] [stdout] 22 | pub struct QueryPlanner {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated functions `new` and `plan` are never used
[INFO] [stdout]   --> src/database/query.rs:27:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | impl QueryPlanner {
[INFO] [stdout]    | ----------------- associated functions in this implementation
[INFO] [stdout] 27 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 31 |     pub fn plan() {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Token` is never used
[INFO] [stdout]  --> src/database/parser.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum Token {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ASTNode` is never used
[INFO] [stdout]   --> src/database/parser.rs:17:10
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub enum ASTNode {
[INFO] [stdout]    |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Parser` is never constructed
[INFO] [stdout]   --> src/database/parser.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 | pub struct Parser {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `parse_select_statement`, and `next_token` are never used
[INFO] [stdout]   --> src/database/parser.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 30 | impl Parser {
[INFO] [stdout]    | ----------- associated items in this implementation
[INFO] [stdout] 31 |     pub fn new(token: Vec<Token>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 42 |     pub fn parse_select_statement(&mut self) -> Result<ASTNode, Error> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 68 |     fn next_token(&mut self) -> Token {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Error` is never used
[INFO] [stdout]  --> src/error.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum Error {
[INFO] [stdout]   |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `ExecutionError` is never used
[INFO] [stdout]   --> src/error.rs:20:10
[INFO] [stdout]    |
[INFO] [stdout] 20 | pub enum ExecutionError{
[INFO] [stdout]    |          ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `workers` is never read
[INFO] [stdout]  --> src/pool.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct ThreadPool {
[INFO] [stdout]   |            ---------- field in this struct
[INFO] [stdout] 9 |     workers: Vec<JoinHandle<()>>,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 12.87s
[INFO] running `Command { std: "docker" "inspect" "492e336a0f9d600b597fc26171ea0826d423da51097a8c49a9eeac2dbfddf470", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "492e336a0f9d600b597fc26171ea0826d423da51097a8c49a9eeac2dbfddf470", kill_on_drop: false }`
[INFO] [stdout] 492e336a0f9d600b597fc26171ea0826d423da51097a8c49a9eeac2dbfddf470
