[INFO] cloning repository https://github.com/gmartsenkov/monkey-lang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/gmartsenkov/monkey-lang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgmartsenkov%2Fmonkey-lang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgmartsenkov%2Fmonkey-lang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9891b9762d642c4a8d27a849e64cb23093336967
[INFO] checking gmartsenkov/monkey-lang against try#b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f for pr-76104
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgmartsenkov%2Fmonkey-lang" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/gmartsenkov/monkey-lang on toolchain b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/gmartsenkov/monkey-lang
[INFO] finished tweaking git repo https://github.com/gmartsenkov/monkey-lang
[INFO] tweaked toml for git repo https://github.com/gmartsenkov/monkey-lang written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/gmartsenkov/monkey-lang already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b0f0364cf0d619b40cc0df9b97b78dff2fefe5a1bdd7b04b231842b054c0f114
[INFO] running `Command { std: "docker" "start" "-a" "b0f0364cf0d619b40cc0df9b97b78dff2fefe5a1bdd7b04b231842b054c0f114", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b0f0364cf0d619b40cc0df9b97b78dff2fefe5a1bdd7b04b231842b054c0f114", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0f0364cf0d619b40cc0df9b97b78dff2fefe5a1bdd7b04b231842b054c0f114", kill_on_drop: false }`
[INFO] [stdout] b0f0364cf0d619b40cc0df9b97b78dff2fefe5a1bdd7b04b231842b054c0f114
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+b1cc2963e8346ba1f5afb1edb86dbcf3f9ef0c5f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c4d1e9ce221b754fcec684aa40791e098494caece7ecfcf1f34a6742ce463dd8
[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" "c4d1e9ce221b754fcec684aa40791e098494caece7ecfcf1f34a6742ce463dd8", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking monkey-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: enum is never used: `Statements`
[INFO] [stdout]  --> src/ast.rs:3:10
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub enum Statements {
[INFO] [stdout]   |          ^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Expressions`
[INFO] [stdout]  --> src/ast.rs:9:10
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub enum Expressions {
[INFO] [stdout]   |          ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Program`
[INFO] [stdout]   --> src/ast.rs:17:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | pub struct Program {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Identifier`
[INFO] [stdout]   --> src/ast.rs:21:12
[INFO] [stdout]    |
[INFO] [stdout] 21 | pub struct Identifier {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `LetStatement`
[INFO] [stdout]   --> src/ast.rs:26:12
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct LetStatement {
[INFO] [stdout]    |            ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ReturnStatement`
[INFO] [stdout]   --> src/ast.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 32 | pub struct ReturnStatement {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Boolean`
[INFO] [stdout]   --> src/ast.rs:37:12
[INFO] [stdout]    |
[INFO] [stdout] 37 | pub struct Boolean {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `IntegerLiteral`
[INFO] [stdout]   --> src/ast.rs:42:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | pub struct IntegerLiteral {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `ExpressionStatement`
[INFO] [stdout]   --> src/ast.rs:47:12
[INFO] [stdout]    |
[INFO] [stdout] 47 | pub struct ExpressionStatement {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `PrefixExpression`
[INFO] [stdout]   --> src/ast.rs:52:12
[INFO] [stdout]    |
[INFO] [stdout] 52 | pub struct PrefixExpression {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `InfixExpression`
[INFO] [stdout]   --> src/ast.rs:58:12
[INFO] [stdout]    |
[INFO] [stdout] 58 | pub struct InfixExpression {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast.rs:66:8
[INFO] [stdout]    |
[INFO] [stdout] 66 |     fn token_literal(&self) -> &str {
[INFO] [stdout]    |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast.rs:72:12
[INFO] [stdout]    |
[INFO] [stdout] 72 |     pub fn token_literal(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast.rs:78:12
[INFO] [stdout]    |
[INFO] [stdout] 78 |     pub fn token_literal(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn token_literal(&self) -> &str {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast.rs:90:12
[INFO] [stdout]    |
[INFO] [stdout] 90 |     pub fn token_literal(&self) -> String {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]   --> src/ast.rs:98:12
[INFO] [stdout]    |
[INFO] [stdout] 98 |     pub fn to_string(&self) -> String {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expression`
[INFO] [stdout]    --> src/ast.rs:111:12
[INFO] [stdout]     |
[INFO] [stdout] 111 |     pub fn expression(&self) -> &Expressions {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `let_statement`
[INFO] [stdout]    --> src/ast.rs:118:12
[INFO] [stdout]     |
[INFO] [stdout] 118 |     pub fn let_statement(&self) -> &LetStatement {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]    --> src/ast.rs:127:8
[INFO] [stdout]     |
[INFO] [stdout] 127 |     fn to_string(&self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `identifier`
[INFO] [stdout]    --> src/ast.rs:142:12
[INFO] [stdout]     |
[INFO] [stdout] 142 |     pub fn identifier(&self) -> &Identifier {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `integer_literal`
[INFO] [stdout]    --> src/ast.rs:149:12
[INFO] [stdout]     |
[INFO] [stdout] 149 |     pub fn integer_literal(&self) -> &IntegerLiteral {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `prefix`
[INFO] [stdout]    --> src/ast.rs:156:12
[INFO] [stdout]     |
[INFO] [stdout] 156 |     pub fn prefix(&self) -> &PrefixExpression {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `infix`
[INFO] [stdout]    --> src/ast.rs:163:12
[INFO] [stdout]     |
[INFO] [stdout] 163 |     pub fn infix(&self) -> &InfixExpression {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `boolean`
[INFO] [stdout]    --> src/ast.rs:170:12
[INFO] [stdout]     |
[INFO] [stdout] 170 |     pub fn boolean(&self) -> &Boolean {
[INFO] [stdout]     |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]    --> src/ast.rs:179:8
[INFO] [stdout]     |
[INFO] [stdout] 179 |     fn token_literal(&self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `to_string`
[INFO] [stdout]    --> src/ast.rs:186:12
[INFO] [stdout]     |
[INFO] [stdout] 186 |     pub fn to_string(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `LOWEST`
[INFO] [stdout]  --> src/parser.rs:5:1
[INFO] [stdout]   |
[INFO] [stdout] 5 | const LOWEST: u8 = 1;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `PREFIX`
[INFO] [stdout]   --> src/parser.rs:10:1
[INFO] [stdout]    |
[INFO] [stdout] 10 | const PREFIX: u8 = 6; // -X or !X
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CALL`
[INFO] [stdout]   --> src/parser.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | const CALL: u8 = 7; // myFunction(x)
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `PrefixParseFn`
[INFO] [stdout]   --> src/parser.rs:13:1
[INFO] [stdout]    |
[INFO] [stdout] 13 | type PrefixParseFn = fn(&mut Parser) -> Option<ast::Expressions>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `InfixParseFn`
[INFO] [stdout]   --> src/parser.rs:14:1
[INFO] [stdout]    |
[INFO] [stdout] 14 | type InfixParseFn = fn(ast::Expressions, &mut Parser) -> Option<ast::Expressions>;
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Parser`
[INFO] [stdout]   --> src/parser.rs:31:12
[INFO] [stdout]    |
[INFO] [stdout] 31 | pub struct Parser<'a> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `new`
[INFO] [stdout]   --> src/parser.rs:40:8
[INFO] [stdout]    |
[INFO] [stdout] 40 | pub fn new(lexer: &mut lexer::Lexer) -> Parser {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_grouped_expression`
[INFO] [stdout]   --> src/parser.rs:73:4
[INFO] [stdout]    |
[INFO] [stdout] 73 | fn parse_grouped_expression(parser: &mut Parser) -> Option<ast::Expressions> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_identifier`
[INFO] [stdout]   --> src/parser.rs:87:4
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn parse_identifier(parser: &mut Parser) -> Option<ast::Expressions> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_integer_literal`
[INFO] [stdout]   --> src/parser.rs:94:4
[INFO] [stdout]    |
[INFO] [stdout] 94 | fn parse_integer_literal(parser: &mut Parser) -> Option<ast::Expressions> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_boolean_expression`
[INFO] [stdout]    --> src/parser.rs:104:4
[INFO] [stdout]     |
[INFO] [stdout] 104 | fn parse_boolean_expression(parser: &mut Parser) -> Option<ast::Expressions> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_prefix_expression`
[INFO] [stdout]    --> src/parser.rs:111:4
[INFO] [stdout]     |
[INFO] [stdout] 111 | fn parse_prefix_expression(parser: &mut Parser) -> Option<ast::Expressions> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `parse_infix_expression`
[INFO] [stdout]    --> src/parser.rs:129:4
[INFO] [stdout]     |
[INFO] [stdout] 129 | fn parse_infix_expression(left: ast::Expressions, parser: &mut Parser) -> Option<ast::Expressions> {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_program`
[INFO] [stdout]    --> src/parser.rs:149:12
[INFO] [stdout]     |
[INFO] [stdout] 149 |     pub fn parse_program(&mut self) -> ast::Program {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_statement`
[INFO] [stdout]    --> src/parser.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn parse_statement(&mut self) -> Option<ast::Statements> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_let_statement`
[INFO] [stdout]    --> src/parser.rs:171:8
[INFO] [stdout]     |
[INFO] [stdout] 171 |     fn parse_let_statement(&mut self) -> Option<ast::Statements> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_return_statement`
[INFO] [stdout]    --> src/parser.rs:201:8
[INFO] [stdout]     |
[INFO] [stdout] 201 |     fn parse_return_statement(&mut self) -> Option<ast::Statements> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_expression_statement`
[INFO] [stdout]    --> src/parser.rs:215:8
[INFO] [stdout]     |
[INFO] [stdout] 215 |     fn parse_expression_statement(&mut self) -> Option<ast::Statements> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_expression`
[INFO] [stdout]    --> src/parser.rs:234:8
[INFO] [stdout]     |
[INFO] [stdout] 234 |     fn parse_expression(&mut self, precedence: u8) -> Option<ast::Expressions> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_identifier`
[INFO] [stdout]    --> src/parser.rs:260:8
[INFO] [stdout]     |
[INFO] [stdout] 260 |     fn parse_identifier(&self) -> ast::Expressions {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `register_prefix_fn`
[INFO] [stdout]    --> src/parser.rs:267:8
[INFO] [stdout]     |
[INFO] [stdout] 267 |     fn register_prefix_fn(&mut self, token_type: token::Type, function: PrefixParseFn) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `register_infix_fn`
[INFO] [stdout]    --> src/parser.rs:271:8
[INFO] [stdout]     |
[INFO] [stdout] 271 |     fn register_infix_fn(&mut self, token_type: token::Type, function: InfixParseFn) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `next_token`
[INFO] [stdout]    --> src/parser.rs:275:8
[INFO] [stdout]     |
[INFO] [stdout] 275 |     fn next_token(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_precedence`
[INFO] [stdout]    --> src/parser.rs:280:8
[INFO] [stdout]     |
[INFO] [stdout] 280 |     fn peek_precedence(&self) -> u8 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `current_precedence`
[INFO] [stdout]    --> src/parser.rs:287:8
[INFO] [stdout]     |
[INFO] [stdout] 287 |     fn current_precedence(&self) -> u8 {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expect_peek_token`
[INFO] [stdout]    --> src/parser.rs:294:8
[INFO] [stdout]     |
[INFO] [stdout] 294 |     fn expect_peek_token(&mut self, expected: token::Type) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `NULL`
[INFO] [stdout]  --> src/token.rs:6:1
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub const NULL: &str = "NULL";
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 54 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `token_literal`
[INFO] [stdout]   --> src/ast.rs:84:12
[INFO] [stdout]    |
[INFO] [stdout] 84 |     pub fn token_literal(&self) -> &str {
[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: `token_literal`
[INFO] [stdout]    --> src/ast.rs:179:8
[INFO] [stdout]     |
[INFO] [stdout] 179 |     fn token_literal(&self) -> String {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `CALL`
[INFO] [stdout]   --> src/parser.rs:11:1
[INFO] [stdout]    |
[INFO] [stdout] 11 | const CALL: u8 = 7; // myFunction(x)
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `parse_identifier`
[INFO] [stdout]    --> src/parser.rs:260:8
[INFO] [stdout]     |
[INFO] [stdout] 260 |     fn parse_identifier(&self) -> ast::Expressions {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "c4d1e9ce221b754fcec684aa40791e098494caece7ecfcf1f34a6742ce463dd8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4d1e9ce221b754fcec684aa40791e098494caece7ecfcf1f34a6742ce463dd8", kill_on_drop: false }`
[INFO] [stdout] c4d1e9ce221b754fcec684aa40791e098494caece7ecfcf1f34a6742ce463dd8