[INFO] cloning repository https://github.com/mrshankly/parvus
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mrshankly/parvus" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrshankly%2Fparvus", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrshankly%2Fparvus'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d0af8f055dd33c1c13db604ff9c20eb05358b4ab
[INFO] checking mrshankly/parvus against try#f47dd4da3ae8c32c9e65d307bfe640b143e674df for pr-77526
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmrshankly%2Fparvus" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mrshankly/parvus on toolchain f47dd4da3ae8c32c9e65d307bfe640b143e674df
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mrshankly/parvus
[INFO] finished tweaking git repo https://github.com/mrshankly/parvus
[INFO] tweaked toml for git repo https://github.com/mrshankly/parvus written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] crate git repo https://github.com/mrshankly/parvus already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 13a644cb88389fbe19166a1b8b63fbf023935be4285639498ec044c79f51052b
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "13a644cb88389fbe19166a1b8b63fbf023935be4285639498ec044c79f51052b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "13a644cb88389fbe19166a1b8b63fbf023935be4285639498ec044c79f51052b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "13a644cb88389fbe19166a1b8b63fbf023935be4285639498ec044c79f51052b", kill_on_drop: false }`
[INFO] [stdout] 13a644cb88389fbe19166a1b8b63fbf023935be4285639498ec044c79f51052b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+f47dd4da3ae8c32c9e65d307bfe640b143e674df" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e210dfda83f57f01341e774d4fab1fe3329a6427010df83f6dea3e5276b5db53
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e210dfda83f57f01341e774d4fab1fe3329a6427010df83f6dea3e5276b5db53", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-width v0.1.8
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]     Checking parvus v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/grammar/parser.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut token = self.bump();
[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: struct is never constructed: `Program`
[INFO] [stdout]  --> src/grammar/ast.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Program {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/grammar/ast.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub fn new() -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Statement`
[INFO] [stdout]   --> src/grammar/ast.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub enum Statement {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expression`
[INFO] [stdout]   --> src/grammar/ast.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub enum Expression {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Constant`
[INFO] [stdout]   --> src/grammar/ast.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub enum Constant {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `TOKEN_EOF`
[INFO] [stdout]  --> src/grammar/lexer.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub const TOKEN_EOF: Token<'static> = Token { kind: TokenKind::EOF, span: "" };
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Lexer`
[INFO] [stdout]  --> src/grammar/lexer.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub struct Lexer<'i> {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/grammar/lexer.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn new(input: &'i str) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bump`
[INFO] [stdout]   --> src/grammar/lexer.rs:19:8
[INFO] [stdout]    |
[INFO] [stdout] 19 |     fn bump(&mut self) -> Option<char> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bump_line`
[INFO] [stdout]   --> src/grammar/lexer.rs:25:8
[INFO] [stdout]    |
[INFO] [stdout] 25 |     fn bump_line(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bump_while`
[INFO] [stdout]   --> src/grammar/lexer.rs:33:8
[INFO] [stdout]    |
[INFO] [stdout] 33 |     fn bump_while<F>(&mut self, predicate: F) -> usize
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `consume`
[INFO] [stdout]   --> src/grammar/lexer.rs:46:8
[INFO] [stdout]    |
[INFO] [stdout] 46 |     fn consume(&mut self) -> &'i str {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next`
[INFO] [stdout]   --> src/grammar/lexer.rs:55:12
[INFO] [stdout]    |
[INFO] [stdout] 55 |     pub fn next(&mut self) -> Token<'i> {
[INFO] [stdout]    |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `EOF`
[INFO] [stdout]    --> src/grammar/lexer.rs:116:5
[INFO] [stdout]     |
[INFO] [stdout] 116 |     EOF,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Unknown`
[INFO] [stdout]    --> src/grammar/lexer.rs:117:5
[INFO] [stdout]     |
[INFO] [stdout] 117 |     Unknown,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Comment`
[INFO] [stdout]    --> src/grammar/lexer.rs:118:5
[INFO] [stdout]     |
[INFO] [stdout] 118 |     Comment,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Whitespace`
[INFO] [stdout]    --> src/grammar/lexer.rs:119:5
[INFO] [stdout]     |
[INFO] [stdout] 119 |     Whitespace,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Integer`
[INFO] [stdout]    --> src/grammar/lexer.rs:121:5
[INFO] [stdout]     |
[INFO] [stdout] 121 |     Integer,
[INFO] [stdout]     |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Identifier`
[INFO] [stdout]    --> src/grammar/lexer.rs:122:5
[INFO] [stdout]     |
[INFO] [stdout] 122 |     Identifier,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Let`
[INFO] [stdout]    --> src/grammar/lexer.rs:124:5
[INFO] [stdout]     |
[INFO] [stdout] 124 |     Let,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Return`
[INFO] [stdout]    --> src/grammar/lexer.rs:125:5
[INFO] [stdout]     |
[INFO] [stdout] 125 |     Return,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Semicolon`
[INFO] [stdout]    --> src/grammar/lexer.rs:127:5
[INFO] [stdout]     |
[INFO] [stdout] 127 |     Semicolon,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `OpenParen`
[INFO] [stdout]    --> src/grammar/lexer.rs:128:5
[INFO] [stdout]     |
[INFO] [stdout] 128 |     OpenParen,
[INFO] [stdout]     |     ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `CloseParen`
[INFO] [stdout]    --> src/grammar/lexer.rs:129:5
[INFO] [stdout]     |
[INFO] [stdout] 129 |     CloseParen,
[INFO] [stdout]     |     ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Assign`
[INFO] [stdout]    --> src/grammar/lexer.rs:131:5
[INFO] [stdout]     |
[INFO] [stdout] 131 |     Assign,
[INFO] [stdout]     |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Minus`
[INFO] [stdout]    --> src/grammar/lexer.rs:132:5
[INFO] [stdout]     |
[INFO] [stdout] 132 |     Minus,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Plus`
[INFO] [stdout]    --> src/grammar/lexer.rs:133:5
[INFO] [stdout]     |
[INFO] [stdout] 133 |     Plus,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Star`
[INFO] [stdout]    --> src/grammar/lexer.rs:134:5
[INFO] [stdout]     |
[INFO] [stdout] 134 |     Star,
[INFO] [stdout]     |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Slash`
[INFO] [stdout]    --> src/grammar/lexer.rs:135:5
[INFO] [stdout]     |
[INFO] [stdout] 135 |     Slash,
[INFO] [stdout]     |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `id_or_kw_token`
[INFO] [stdout]    --> src/grammar/lexer.rs:140:4
[INFO] [stdout]     |
[INFO] [stdout] 140 | fn id_or_kw_token(span: &str) -> Token {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parser`
[INFO] [stdout]  --> src/grammar/parser.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Parser<'l> {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/grammar/parser.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(lexer: &'l mut Lexer<'l>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bump`
[INFO] [stdout]   --> src/grammar/parser.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn bump(&mut self) -> Token<'_> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expect`
[INFO] [stdout]   --> src/grammar/parser.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn expect(&mut self, kind: TokenKind) -> Result<Token<'_>, ParserError> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_program`
[INFO] [stdout]   --> src/grammar/parser.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn parse_program(&mut self) -> Result<Program, ParserError> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_let`
[INFO] [stdout]   --> src/grammar/parser.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn parse_let(&mut self) -> Result<Statement, ParserError> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_return`
[INFO] [stdout]   --> src/grammar/parser.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn parse_return(&mut self) -> Result<Statement, ParserError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_expression`
[INFO] [stdout]   --> src/grammar/parser.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn parse_expression(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `prefix_binding_power`
[INFO] [stdout]    --> src/grammar/parser.rs:111:4
[INFO] [stdout]     |
[INFO] [stdout] 111 | fn prefix_binding_power(kind: TokenKind) -> Option<u8> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `infix_binding_power`
[INFO] [stdout]    --> src/grammar/parser.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn infix_binding_power(kind: TokenKind) -> Option<(u8, u8)> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ParserError`
[INFO] [stdout]    --> src/grammar/parser.rs:129:10
[INFO] [stdout]     |
[INFO] [stdout] 129 | pub enum ParserError {
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 42 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/grammar/parser.rs:69:13
[INFO] [stdout]    |
[INFO] [stdout] 69 |         let mut token = self.bump();
[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: struct is never constructed: `Program`
[INFO] [stdout]  --> src/grammar/ast.rs:1:12
[INFO] [stdout]   |
[INFO] [stdout] 1 | pub struct Program {
[INFO] [stdout]   |            ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]  --> src/grammar/ast.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 |     pub fn new() -> Self {
[INFO] [stdout]   |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Statement`
[INFO] [stdout]   --> src/grammar/ast.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub enum Statement {
[INFO] [stdout]    |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expression`
[INFO] [stdout]   --> src/grammar/ast.rs:16:10
[INFO] [stdout]    |
[INFO] [stdout] 16 | pub enum Expression {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Constant`
[INFO] [stdout]   --> src/grammar/ast.rs:23:10
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub enum Constant {
[INFO] [stdout]    |          ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parser`
[INFO] [stdout]  --> src/grammar/parser.rs:4:12
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub struct Parser<'l> {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `new`
[INFO] [stdout]   --> src/grammar/parser.rs:11:12
[INFO] [stdout]    |
[INFO] [stdout] 11 |     pub fn new(lexer: &'l mut Lexer<'l>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `bump`
[INFO] [stdout]   --> src/grammar/parser.rs:17:8
[INFO] [stdout]    |
[INFO] [stdout] 17 |     fn bump(&mut self) -> Token<'_> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expect`
[INFO] [stdout]   --> src/grammar/parser.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 |     fn expect(&mut self, kind: TokenKind) -> Result<Token<'_>, ParserError> {
[INFO] [stdout]    |        ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_program`
[INFO] [stdout]   --> src/grammar/parser.rs:33:12
[INFO] [stdout]    |
[INFO] [stdout] 33 |     pub fn parse_program(&mut self) -> Result<Program, ParserError> {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_let`
[INFO] [stdout]   --> src/grammar/parser.rs:50:8
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn parse_let(&mut self) -> Result<Statement, ParserError> {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_return`
[INFO] [stdout]   --> src/grammar/parser.rs:58:8
[INFO] [stdout]    |
[INFO] [stdout] 58 |     fn parse_return(&mut self) -> Result<Statement, ParserError> {
[INFO] [stdout]    |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_expression`
[INFO] [stdout]   --> src/grammar/parser.rs:65:8
[INFO] [stdout]    |
[INFO] [stdout] 65 |     fn parse_expression(
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `prefix_binding_power`
[INFO] [stdout]    --> src/grammar/parser.rs:111:4
[INFO] [stdout]     |
[INFO] [stdout] 111 | fn prefix_binding_power(kind: TokenKind) -> Option<u8> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `infix_binding_power`
[INFO] [stdout]    --> src/grammar/parser.rs:120:4
[INFO] [stdout]     |
[INFO] [stdout] 120 | fn infix_binding_power(kind: TokenKind) -> Option<(u8, u8)> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `ParserError`
[INFO] [stdout]    --> src/grammar/parser.rs:129:10
[INFO] [stdout]     |
[INFO] [stdout] 129 | pub enum ParserError {
[INFO] [stdout]     |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.26s
[INFO] running `Command { std: "docker" "inspect" "e210dfda83f57f01341e774d4fab1fe3329a6427010df83f6dea3e5276b5db53", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e210dfda83f57f01341e774d4fab1fe3329a6427010df83f6dea3e5276b5db53", kill_on_drop: false }`
[INFO] [stdout] e210dfda83f57f01341e774d4fab1fe3329a6427010df83f6dea3e5276b5db53