[INFO] cloning repository https://github.com/pigeonhands/xur
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/pigeonhands/xur" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpigeonhands%2Fxur", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpigeonhands%2Fxur'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9b5c520795cde8057ed79b13154e970ab8461517
[INFO] checking pigeonhands/xur against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fpigeonhands%2Fxur" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/pigeonhands/xur
[INFO] finished tweaking git repo https://github.com/pigeonhands/xur
[INFO] tweaked toml for git repo https://github.com/pigeonhands/xur written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/pigeonhands/xur on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/pigeonhands/xur 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" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fa7c3a4da5dfa0a851423c84a42425e51b297b1d752f270de5b84090ad8f3af4
[INFO] running `Command { std: "docker" "start" "-a" "fa7c3a4da5dfa0a851423c84a42425e51b297b1d752f270de5b84090ad8f3af4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fa7c3a4da5dfa0a851423c84a42425e51b297b1d752f270de5b84090ad8f3af4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fa7c3a4da5dfa0a851423c84a42425e51b297b1d752f270de5b84090ad8f3af4", kill_on_drop: false }`
[INFO] [stdout] fa7c3a4da5dfa0a851423c84a42425e51b297b1d752f270de5b84090ad8f3af4
[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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] eec97b5fef3ed63059c18091fad3fb4951c68b8b01fd004547b1909ca8c3af21
[INFO] running `Command { std: "docker" "start" "-a" "eec97b5fef3ed63059c18091fad3fb4951c68b8b01fd004547b1909ca8c3af21", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde v1.0.132
[INFO] [stderr]    Compiling syn v1.0.84
[INFO] [stderr]     Checking tracing-core v0.1.21
[INFO] [stderr]    Compiling serde_json v1.0.73
[INFO] [stderr]     Checking regex-automata v0.1.10
[INFO] [stderr]     Checking thread_local v1.1.3
[INFO] [stderr]     Checking chrono v0.4.19
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking unicode-xid v0.2.2
[INFO] [stderr]     Checking tracing-log v0.1.2
[INFO] [stderr]     Checking matchers v0.0.1
[INFO] [stderr]     Checking tracing-serde v0.1.2
[INFO] [stderr]    Compiling tracing-attributes v0.1.18
[INFO] [stderr]     Checking tracing v0.1.29
[INFO] [stderr]     Checking tracing-subscriber v0.2.25
[INFO] [stderr]     Checking xur v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::ast::value::Statement::Expr`
[INFO] [stdout]  --> src/ast/parser.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::ast::value::Statement::Expr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> src/ast/parser.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | use anyhow::{anyhow, bail, Context};
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TokenKind` and `Token`
[INFO] [stdout]  --> src/ast/value.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::lexer::{Token, TokenKind};
[INFO] [stdout]   |                    ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ops::Range`
[INFO] [stdout]  --> src/xurvm/var.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{collections::VecDeque, ops::Range};
[INFO] [stdout]   |                                  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> src/xurvm/var.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | use anyhow::{anyhow, bail, Context};
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/xurvm/vmcore.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> src/xurvm/vmcore.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | use anyhow::{anyhow, bail, Context};
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `info`
[INFO] [stdout]  --> src/xurvm/vmcore.rs:8:22
[INFO] [stdout]   |
[INFO] [stdout] 8 | use tracing::{debug, info};
[INFO] [stdout]   |                      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `xurvm::XurVM`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use xurvm::XurVM;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::ast::value::Statement::Expr`
[INFO] [stdout]  --> src/ast/parser.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use crate::ast::value::Statement::Expr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> src/ast/parser.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | use anyhow::{anyhow, bail, Context};
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/xurvm/vmcore.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |               return Ok(Value::Function(fn_ref));
[INFO] [stdout]     |               ---------------------------------- any code following this expression is unreachable
[INFO] [stdout] 113 | /             Ok(Value::create_fn(
[INFO] [stdout] 114 | |                 &format!("__sym_bind_@{}", value_1),
[INFO] [stdout] 115 | |                 1,
[INFO] [stdout] 116 | |                 |env, args| {
[INFO] [stdout] ...   |
[INFO] [stdout] 121 | |                 },
[INFO] [stdout] 122 | |             ))
[INFO] [stdout]     | |______________^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `TokenKind` and `Token`
[INFO] [stdout]  --> src/ast/value.rs:1:20
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::lexer::{Token, TokenKind};
[INFO] [stdout]   |                    ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ops::Range`
[INFO] [stdout]  --> src/xurvm/var.rs:2:34
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::{collections::VecDeque, ops::Range};
[INFO] [stdout]   |                                  ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> src/xurvm/var.rs:5:14
[INFO] [stdout]   |
[INFO] [stdout] 5 | use anyhow::{anyhow, bail, Context};
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::marker::PhantomData`
[INFO] [stdout]  --> src/xurvm/vmcore.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::marker::PhantomData;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `anyhow`
[INFO] [stdout]  --> src/xurvm/vmcore.rs:7:14
[INFO] [stdout]   |
[INFO] [stdout] 7 | use anyhow::{anyhow, bail, Context};
[INFO] [stdout]   |              ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `info`
[INFO] [stdout]  --> src/xurvm/vmcore.rs:8:22
[INFO] [stdout]   |
[INFO] [stdout] 8 | use tracing::{debug, info};
[INFO] [stdout]   |                      ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `xurvm::XurVM`
[INFO] [stdout]  --> src/main.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 | use xurvm::XurVM;
[INFO] [stdout]   |     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]    --> src/ast/parser.rs:108:39
[INFO] [stdout]     |
[INFO] [stdout] 108 |                 TokenKind::Identifier(id) => {
[INFO] [stdout]     |                                       ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/xurvm/vmcore.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |             x => bail!("Statement {:?} not supported", x),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/xurvm/vmcore.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 138 |             Statement::Expr(e) => self.run_expr(e),
[INFO] [stdout]     |             ------------------ matches some of the same values
[INFO] [stdout] 139 |             Statement::Empty => Ok(Value::None),
[INFO] [stdout]     |             ---------------- matches some of the same values
[INFO] [stdout] 140 |             x => bail!("Statement {:?} not supported", x),
[INFO] [stdout]     |             ^ collectively making this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/xurvm/vmcore.rs:174:21
[INFO] [stdout]     |
[INFO] [stdout] 174 |                 let mut fn_value = self.get_value(*callie)?.get_callable()?;
[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: variants `Boolean` and `None` are never constructed
[INFO] [stdout]  --> src/ast/value.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum LiteralValue {
[INFO] [stdout]   |          ------------ variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 8 |     Boolean(bool),
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 9 |     None,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `LiteralValue` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Plus` and `Dot` are never constructed
[INFO] [stdout]   --> src/lexer/token.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout]  4 | pub enum TokenKind {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 16 |     Plus,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 17 |     Dot,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenKind` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `length` is never read
[INFO] [stdout]   --> src/lexer/token.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Token {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 27 |     pub kind: TokenKind,
[INFO] [stdout] 28 |     pub length: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `nth` and `second` are never used
[INFO] [stdout]   --> src/lexer/tokenizer.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 55 | impl<'a> Tokenizer<'a> {
[INFO] [stdout]    | ---------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 63 |     pub fn nth(&self, i: usize) -> char {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 76 |     pub fn second(&self) -> char {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable expression
[INFO] [stdout]    --> src/xurvm/vmcore.rs:113:13
[INFO] [stdout]     |
[INFO] [stdout] 112 |               return Ok(Value::Function(fn_ref));
[INFO] [stdout]     |               ---------------------------------- any code following this expression is unreachable
[INFO] [stdout] 113 | /             Ok(Value::create_fn(
[INFO] [stdout] 114 | |                 &format!("__sym_bind_@{}", value_1),
[INFO] [stdout] 115 | |                 1,
[INFO] [stdout] 116 | |                 |env, args| {
[INFO] [stdout] ...   |
[INFO] [stdout] 121 | |                 },
[INFO] [stdout] 122 | |             ))
[INFO] [stdout]     | |______________^ unreachable expression
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `id`
[INFO] [stdout]    --> src/ast/parser.rs:108:39
[INFO] [stdout]     |
[INFO] [stdout] 108 |                 TokenKind::Identifier(id) => {
[INFO] [stdout]     |                                       ^^ help: if this is intentional, prefix it with an underscore: `_id`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable pattern
[INFO] [stdout]    --> src/xurvm/vmcore.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 140 |             x => bail!("Statement {:?} not supported", x),
[INFO] [stdout]     |             ^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout] note: multiple earlier patterns match some of the same values
[INFO] [stdout]    --> src/xurvm/vmcore.rs:140:13
[INFO] [stdout]     |
[INFO] [stdout] 138 |             Statement::Expr(e) => self.run_expr(e),
[INFO] [stdout]     |             ------------------ matches some of the same values
[INFO] [stdout] 139 |             Statement::Empty => Ok(Value::None),
[INFO] [stdout]     |             ---------------- matches some of the same values
[INFO] [stdout] 140 |             x => bail!("Statement {:?} not supported", x),
[INFO] [stdout]     |             ^ collectively making this unreachable
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/xurvm/vmcore.rs:174:21
[INFO] [stdout]     |
[INFO] [stdout] 174 |                 let mut fn_value = self.get_value(*callie)?.get_callable()?;
[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: variants `Boolean` and `None` are never constructed
[INFO] [stdout]  --> src/ast/value.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum LiteralValue {
[INFO] [stdout]   |          ------------ variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 8 |     Boolean(bool),
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 9 |     None,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `LiteralValue` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Plus` and `Dot` are never constructed
[INFO] [stdout]   --> src/lexer/token.rs:16:5
[INFO] [stdout]    |
[INFO] [stdout]  4 | pub enum TokenKind {
[INFO] [stdout]    |          --------- variants in this enum
[INFO] [stdout] ...
[INFO] [stdout] 16 |     Plus,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 17 |     Dot,
[INFO] [stdout]    |     ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TokenKind` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `length` is never read
[INFO] [stdout]   --> src/lexer/token.rs:28:9
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Token {
[INFO] [stdout]    |            ----- field in this struct
[INFO] [stdout] 27 |     pub kind: TokenKind,
[INFO] [stdout] 28 |     pub length: usize,
[INFO] [stdout]    |         ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Token` has derived impls for the traits `Debug` and `Clone`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `nth` and `second` are never used
[INFO] [stdout]   --> src/lexer/tokenizer.rs:63:12
[INFO] [stdout]    |
[INFO] [stdout] 55 | impl<'a> Tokenizer<'a> {
[INFO] [stdout]    | ---------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 63 |     pub fn nth(&self, i: usize) -> char {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 76 |     pub fn second(&self) -> char {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 15.53s
[INFO] running `Command { std: "docker" "inspect" "eec97b5fef3ed63059c18091fad3fb4951c68b8b01fd004547b1909ca8c3af21", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "eec97b5fef3ed63059c18091fad3fb4951c68b8b01fd004547b1909ca8c3af21", kill_on_drop: false }`
[INFO] [stdout] eec97b5fef3ed63059c18091fad3fb4951c68b8b01fd004547b1909ca8c3af21
