[INFO] cloning repository https://github.com/therealansh/fxlang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/therealansh/fxlang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftherealansh%2Ffxlang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftherealansh%2Ffxlang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 664211f6e551353a517872a10dfe3be089ab511d
[INFO] checking therealansh/fxlang against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftherealansh%2Ffxlang" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/therealansh/fxlang
[INFO] finished tweaking git repo https://github.com/therealansh/fxlang
[INFO] tweaked toml for git repo https://github.com/therealansh/fxlang written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/therealansh/fxlang 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/therealansh/fxlang 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-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] e38078eabe76e8d27f8a7f2cb2b05409f13a8bbca39ef707dbaa9f059898ab61
[INFO] running `Command { std: "docker" "start" "-a" "e38078eabe76e8d27f8a7f2cb2b05409f13a8bbca39ef707dbaa9f059898ab61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e38078eabe76e8d27f8a7f2cb2b05409f13a8bbca39ef707dbaa9f059898ab61", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e38078eabe76e8d27f8a7f2cb2b05409f13a8bbca39ef707dbaa9f059898ab61", kill_on_drop: false }`
[INFO] [stdout] e38078eabe76e8d27f8a7f2cb2b05409f13a8bbca39ef707dbaa9f059898ab61
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 707944624f588166fc0a233db82df40738e84e7109bcc534243ab735c100f32a
[INFO] running `Command { std: "docker" "start" "-a" "707944624f588166fc0a233db82df40738e84e7109bcc534243ab735c100f32a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking colored v2.0.0
[INFO] [stderr]     Checking fxlang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `crate::frontend::expr::Expr::Literal`
[INFO] [stdout]  --> src/frontend/parser.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::frontend::expr::Expr::Literal;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]   --> src/frontend/parser.rs:55:30
[INFO] [stdout]    |
[INFO] [stdout] 55 |         else if self.t_match((&[TokenType::Return])) {
[INFO] [stdout]    |                              ^                    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 55 -         else if self.t_match((&[TokenType::Return])) {
[INFO] [stdout] 55 +         else if self.t_match(&[TokenType::Return] ) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/frontend/parser.rs:230:11
[INFO] [stdout]     |
[INFO] [stdout] 230 |         if(self.is_at_end()) {
[INFO] [stdout]     |           ^                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 230 -         if(self.is_at_end()) {
[INFO] [stdout] 230 +         if self.is_at_end()  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/frontend/parser.rs:245:11
[INFO] [stdout]     |
[INFO] [stdout] 245 |         if(!self.is_at_end()){
[INFO] [stdout]     |           ^                 ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 245 -         if(!self.is_at_end()){
[INFO] [stdout] 245 +         if !self.is_at_end() {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/frontend/parser.rs:467:15
[INFO] [stdout]     |
[INFO] [stdout] 467 |             if(self.previous().token_type==TokenType::Semicolon) { return; }
[INFO] [stdout]     |               ^                                                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 467 -             if(self.previous().token_type==TokenType::Semicolon) { return; }
[INFO] [stdout] 467 +             if self.previous().token_type==TokenType::Semicolon  { return; }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]   --> src/frontend/interpreter.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::io;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TokenType`
[INFO] [stdout]  --> src/frontend/fxfx.rs:2:38
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::frontend::tokens::{Token, TokenType};
[INFO] [stdout]   |                                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Visitor`
[INFO] [stdout]  --> src/frontend/resolver.rs:2:29
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::frontend::expr::{Visitor, Expr, LiteralValue};
[INFO] [stdout]   |                             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `parser_error`
[INFO] [stdout]  --> src/frontend/resolver.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::frontend::error::{Error, parser_error, report};
[INFO] [stdout]   |                                     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::frontend::expr::Expr::Literal`
[INFO] [stdout]  --> src/frontend/parser.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::frontend::expr::Expr::Literal;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around method argument
[INFO] [stdout]   --> src/frontend/parser.rs:55:30
[INFO] [stdout]    |
[INFO] [stdout] 55 |         else if self.t_match((&[TokenType::Return])) {
[INFO] [stdout]    |                              ^                    ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 55 -         else if self.t_match((&[TokenType::Return])) {
[INFO] [stdout] 55 +         else if self.t_match(&[TokenType::Return] ) {
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/frontend/parser.rs:230:11
[INFO] [stdout]     |
[INFO] [stdout] 230 |         if(self.is_at_end()) {
[INFO] [stdout]     |           ^                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 230 -         if(self.is_at_end()) {
[INFO] [stdout] 230 +         if self.is_at_end()  {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/frontend/parser.rs:245:11
[INFO] [stdout]     |
[INFO] [stdout] 245 |         if(!self.is_at_end()){
[INFO] [stdout]     |           ^                 ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 245 -         if(!self.is_at_end()){
[INFO] [stdout] 245 +         if !self.is_at_end() {
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around `if` condition
[INFO] [stdout]    --> src/frontend/parser.rs:467:15
[INFO] [stdout]     |
[INFO] [stdout] 467 |             if(self.previous().token_type==TokenType::Semicolon) { return; }
[INFO] [stdout]     |               ^                                                ^
[INFO] [stdout]     |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]     |
[INFO] [stdout] 467 -             if(self.previous().token_type==TokenType::Semicolon) { return; }
[INFO] [stdout] 467 +             if self.previous().token_type==TokenType::Semicolon  { return; }
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io`
[INFO] [stdout]   --> src/frontend/interpreter.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::io;
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TokenType`
[INFO] [stdout]  --> src/frontend/fxfx.rs:2:38
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::frontend::tokens::{Token, TokenType};
[INFO] [stdout]   |                                      ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Visitor`
[INFO] [stdout]  --> src/frontend/resolver.rs:2:29
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::frontend::expr::{Visitor, Expr, LiteralValue};
[INFO] [stdout]   |                             ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `parser_error`
[INFO] [stdout]  --> src/frontend/resolver.rs:4:37
[INFO] [stdout]   |
[INFO] [stdout] 4 | use crate::frontend::error::{Error, parser_error, report};
[INFO] [stdout]   |                                     ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `callee`
[INFO] [stdout]    --> src/frontend/expr.rs:151:35
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn visit_call_expr(&mut self, callee: &Expr, paren: &Token, arguments: &Vec<Expr>) -> Result<String, Error> {
[INFO] [stdout]     |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_callee`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `paren`
[INFO] [stdout]    --> src/frontend/expr.rs:151:50
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn visit_call_expr(&mut self, callee: &Expr, paren: &Token, arguments: &Vec<Expr>) -> Result<String, Error> {
[INFO] [stdout]     |                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_paren`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arguments`
[INFO] [stdout]    --> src/frontend/expr.rs:151:65
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn visit_call_expr(&mut self, callee: &Expr, paren: &Token, arguments: &Vec<Expr>) -> Result<String, Error> {
[INFO] [stdout]     |                                                                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arguments`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `object`
[INFO] [stdout]    --> src/frontend/expr.rs:155:34
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn visit_get_expr(&mut self, object: &Expr, name: &Token) -> Result<String, Error> {
[INFO] [stdout]     |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_object`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/frontend/expr.rs:155:49
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn visit_get_expr(&mut self, object: &Expr, name: &Token) -> Result<String, Error> {
[INFO] [stdout]     |                                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `object`
[INFO] [stdout]    --> src/frontend/expr.rs:159:34
[INFO] [stdout]     |
[INFO] [stdout] 159 |     fn visit_set_expr(&mut self, object: &Expr, name: &Token, value: &Expr) -> Result<String, Error> {
[INFO] [stdout]     |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_object`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/frontend/expr.rs:159:49
[INFO] [stdout]     |
[INFO] [stdout] 159 |     fn visit_set_expr(&mut self, object: &Expr, name: &Token, value: &Expr) -> Result<String, Error> {
[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/frontend/expr.rs:159:63
[INFO] [stdout]     |
[INFO] [stdout] 159 |     fn visit_set_expr(&mut self, object: &Expr, name: &Token, value: &Expr) -> Result<String, Error> {
[INFO] [stdout]     |                                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keyword`
[INFO] [stdout]    --> src/frontend/expr.rs:163:36
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn visit_super_expr(&mut self, keyword: &Token, method: &Token) -> Result<String, Error> {
[INFO] [stdout]     |                                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keyword`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `method`
[INFO] [stdout]    --> src/frontend/expr.rs:163:53
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn visit_super_expr(&mut self, keyword: &Token, method: &Token) -> Result<String, Error> {
[INFO] [stdout]     |                                                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_method`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keyword`
[INFO] [stdout]    --> src/frontend/expr.rs:167:35
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn visit_this_expr(&mut self, keyword: &Token) -> Result<String, Error> {
[INFO] [stdout]     |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keyword`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/frontend/parser.rs:260:13
[INFO] [stdout]     |
[INFO] [stdout] 260 |         let mut expr = self.or_()?;
[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: unreachable pattern
[INFO] [stdout]    --> src/frontend/parser.rs:472:19
[INFO] [stdout]     |
[INFO] [stdout] 471 |                 | TokenType::Var
[INFO] [stdout]     |                   -------------- matches all the relevant values
[INFO] [stdout] 472 |                 | TokenType::Var
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/frontend/interpreter.rs:61:32
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 body:Box::new(|args:&Vec<FxUnit>|{
[INFO] [stdout]    |                                ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/frontend/interpreter.rs:49:33
[INFO] [stdout]    |
[INFO] [stdout] 49 |                 body: Box::new(|args:&Vec<FxUnit>|{
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/frontend/interpreter.rs:30:33
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 body: Box::new(|args:&Vec<FxUnit>|{
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keyword`
[INFO] [stdout]    --> src/frontend/interpreter.rs:389:37
[INFO] [stdout]     |
[INFO] [stdout] 389 |     fn visit_return_stmt(&mut self, keyword: &Token, value: &Option<Expr>) -> Result<(), Error> {
[INFO] [stdout]     |                                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keyword`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/frontend/fxfx.rs:34:21
[INFO] [stdout]    |
[INFO] [stdout] 34 |                 let mut env = Rc::new(RefCell::new(Environment::from(closure)));
[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/frontend/fxfx.rs:69:21
[INFO] [stdout]    |
[INFO] [stdout] 69 |                 let mut env = Rc::new(RefCell::new(Environment::from(closure)));
[INFO] [stdout]    |                     ----^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `body`
[INFO] [stdout]   --> src/frontend/fxfx.rs:67:27
[INFO] [stdout]    |
[INFO] [stdout] 67 |             FxFx::Native {body, ..} => unreachable!(),
[INFO] [stdout]    |                           ^^^^ help: try ignoring the field: `body: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/frontend/resolver.rs:223:61
[INFO] [stdout]     |
[INFO] [stdout] 223 |     fn visit_binary_expr(&mut self, lhs: &Expr, rhs: &Expr, op: &Token) -> Result<(), Error> {
[INFO] [stdout]     |                                                             ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `paren`
[INFO] [stdout]    --> src/frontend/resolver.rs:229:50
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn visit_call_expr(&mut self, callee: &Expr, paren: &Token, arguments: &Vec<Expr>) -> Result<(), Error> {
[INFO] [stdout]     |                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_paren`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/frontend/resolver.rs:237:49
[INFO] [stdout]     |
[INFO] [stdout] 237 |     fn visit_get_expr(&mut self, object: &Expr, name: &Token) -> Result<(), Error> {
[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/frontend/resolver.rs:242:49
[INFO] [stdout]     |
[INFO] [stdout] 242 |     fn visit_set_expr(&mut self, object: &Expr, name: &Token, value: &Expr) -> Result<(),Error>{
[INFO] [stdout]     |                                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `method`
[INFO] [stdout]    --> src/frontend/resolver.rs:248:53
[INFO] [stdout]     |
[INFO] [stdout] 248 |     fn visit_super_expr(&mut self, keyword: &Token, method: &Token) -> Result<(), Error> {
[INFO] [stdout]     |                                                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_method`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/frontend/resolver.rs:271:38
[INFO] [stdout]     |
[INFO] [stdout] 271 |     fn visit_literal_expr(&mut self, val: &LiteralValue) -> Result<(), Error> {
[INFO] [stdout]     |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/frontend/resolver.rs:275:62
[INFO] [stdout]     |
[INFO] [stdout] 275 |     fn visit_logical_expr(&mut self, lhs: &Expr, rhs: &Expr, op: &Token) -> Result<(), Error> {
[INFO] [stdout]     |                                                              ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/frontend/resolver.rs:281:36
[INFO] [stdout]     |
[INFO] [stdout] 281 |     fn visit_unary_expr(&mut self, op: &Token, rhs: &Expr) -> Result<(), Error> {
[INFO] [stdout]     |                                    ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `sync` is never used
[INFO] [stdout]    --> src/frontend/parser.rs:464:8
[INFO] [stdout]     |
[INFO] [stdout]  12 | impl Parser {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 464 |     fn sync(&mut self){
[INFO] [stdout]     |        ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/frontend/parser.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |         self.consume(TokenType::Semicolon, "Expect ';' after variable declaration");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let _ = self.consume(TokenType::Semicolon, "Expect ';' after variable declaration");
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/frontend/parser.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |         self.consume(TokenType::LeftParen, "Expect '(' after 'if'.");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let _ = self.consume(TokenType::LeftParen, "Expect '(' after 'if'.");
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/frontend/parser.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |         self.consume(TokenType::RightParen,"Expect ')' after if condition");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 89 |         let _ = self.consume(TokenType::RightParen,"Expect ')' after if condition");
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/frontend/parser.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |         self.consume(TokenType::LeftParen, "Expect '(' after 'while'.");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 154 |         let _ = self.consume(TokenType::LeftParen, "Expect '(' after 'while'.");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/frontend/parser.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 |         self.consume(TokenType::RightParen,"Expect ')' after condition.");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 156 |         let _ = self.consume(TokenType::RightParen,"Expect ')' after condition.");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/frontend/parser.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         self.consume(TokenType::LeftParen, "Expect '(' after 'for'");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 162 |         let _ = self.consume(TokenType::LeftParen, "Expect '(' after 'for'");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/frontend/parser.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |         self.consume(TokenType::Semicolon,"Expeect ';' after loop condition");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 176 |         let _ = self.consume(TokenType::Semicolon,"Expeect ';' after loop condition");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `readNum` should have a snake case name
[INFO] [stdout]   --> src/frontend/interpreter.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let readNum:FxUnit = FxUnit::Callable(
[INFO] [stdout]    |             ^^^^^^^ help: convert the identifier to snake case: `read_num`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `readString` should have a snake case name
[INFO] [stdout]   --> src/frontend/interpreter.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let readString:FxUnit = FxUnit::Callable(
[INFO] [stdout]    |             ^^^^^^^^^^ help: convert the identifier to snake case: `read_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/frontend/interpreter.rs:334:9
[INFO] [stdout]     |
[INFO] [stdout] 334 | /         self.exec_block(
[INFO] [stdout] 335 | |             statements,
[INFO] [stdout] 336 | |             Rc::new(RefCell::new(Environment::from(&self.env))),
[INFO] [stdout] 337 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 334 |         let _ = self.exec_block(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/frontend/interpreter.rs:440:9
[INFO] [stdout]     |
[INFO] [stdout] 440 |         self.env.borrow_mut().assign(name, class);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 440 |         let _ = self.env.borrow_mut().assign(name, class);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/frontend/resolver.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         stmt.accept(self);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let _ = stmt.accept(self);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/frontend/resolver.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         expr.accept(self);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let _ = expr.accept(self);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `callee`
[INFO] [stdout]    --> src/frontend/expr.rs:151:35
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn visit_call_expr(&mut self, callee: &Expr, paren: &Token, arguments: &Vec<Expr>) -> Result<String, Error> {
[INFO] [stdout]     |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_callee`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `paren`
[INFO] [stdout]    --> src/frontend/expr.rs:151:50
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn visit_call_expr(&mut self, callee: &Expr, paren: &Token, arguments: &Vec<Expr>) -> Result<String, Error> {
[INFO] [stdout]     |                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_paren`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `arguments`
[INFO] [stdout]    --> src/frontend/expr.rs:151:65
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn visit_call_expr(&mut self, callee: &Expr, paren: &Token, arguments: &Vec<Expr>) -> Result<String, Error> {
[INFO] [stdout]     |                                                                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arguments`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `object`
[INFO] [stdout]    --> src/frontend/expr.rs:155:34
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn visit_get_expr(&mut self, object: &Expr, name: &Token) -> Result<String, Error> {
[INFO] [stdout]     |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_object`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/frontend/expr.rs:155:49
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn visit_get_expr(&mut self, object: &Expr, name: &Token) -> Result<String, Error> {
[INFO] [stdout]     |                                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `object`
[INFO] [stdout]    --> src/frontend/expr.rs:159:34
[INFO] [stdout]     |
[INFO] [stdout] 159 |     fn visit_set_expr(&mut self, object: &Expr, name: &Token, value: &Expr) -> Result<String, Error> {
[INFO] [stdout]     |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_object`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/frontend/expr.rs:159:49
[INFO] [stdout]     |
[INFO] [stdout] 159 |     fn visit_set_expr(&mut self, object: &Expr, name: &Token, value: &Expr) -> Result<String, Error> {
[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/frontend/expr.rs:159:63
[INFO] [stdout]     |
[INFO] [stdout] 159 |     fn visit_set_expr(&mut self, object: &Expr, name: &Token, value: &Expr) -> Result<String, Error> {
[INFO] [stdout]     |                                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keyword`
[INFO] [stdout]    --> src/frontend/expr.rs:163:36
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn visit_super_expr(&mut self, keyword: &Token, method: &Token) -> Result<String, Error> {
[INFO] [stdout]     |                                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keyword`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `method`
[INFO] [stdout]    --> src/frontend/expr.rs:163:53
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn visit_super_expr(&mut self, keyword: &Token, method: &Token) -> Result<String, Error> {
[INFO] [stdout]     |                                                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_method`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keyword`
[INFO] [stdout]    --> src/frontend/expr.rs:167:35
[INFO] [stdout]     |
[INFO] [stdout] 167 |     fn visit_this_expr(&mut self, keyword: &Token) -> Result<String, Error> {
[INFO] [stdout]     |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keyword`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/frontend/parser.rs:260:13
[INFO] [stdout]     |
[INFO] [stdout] 260 |         let mut expr = self.or_()?;
[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: unreachable pattern
[INFO] [stdout]    --> src/frontend/parser.rs:472:19
[INFO] [stdout]     |
[INFO] [stdout] 471 |                 | TokenType::Var
[INFO] [stdout]     |                   -------------- matches all the relevant values
[INFO] [stdout] 472 |                 | TokenType::Var
[INFO] [stdout]     |                   ^^^^^^^^^^^^^^ no value can reach this
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/frontend/interpreter.rs:61:32
[INFO] [stdout]    |
[INFO] [stdout] 61 |                 body:Box::new(|args:&Vec<FxUnit>|{
[INFO] [stdout]    |                                ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/frontend/interpreter.rs:49:33
[INFO] [stdout]    |
[INFO] [stdout] 49 |                 body: Box::new(|args:&Vec<FxUnit>|{
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `args`
[INFO] [stdout]   --> src/frontend/interpreter.rs:30:33
[INFO] [stdout]    |
[INFO] [stdout] 30 |                 body: Box::new(|args:&Vec<FxUnit>|{
[INFO] [stdout]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `keyword`
[INFO] [stdout]    --> src/frontend/interpreter.rs:389:37
[INFO] [stdout]     |
[INFO] [stdout] 389 |     fn visit_return_stmt(&mut self, keyword: &Token, value: &Option<Expr>) -> Result<(), Error> {
[INFO] [stdout]     |                                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keyword`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/frontend/fxfx.rs:34:21
[INFO] [stdout]    |
[INFO] [stdout] 34 |                 let mut env = Rc::new(RefCell::new(Environment::from(closure)));
[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/frontend/fxfx.rs:69:21
[INFO] [stdout]    |
[INFO] [stdout] 69 |                 let mut env = Rc::new(RefCell::new(Environment::from(closure)));
[INFO] [stdout]    |                     ----^^^
[INFO] [stdout]    |                     |
[INFO] [stdout]    |                     help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `body`
[INFO] [stdout]   --> src/frontend/fxfx.rs:67:27
[INFO] [stdout]    |
[INFO] [stdout] 67 |             FxFx::Native {body, ..} => unreachable!(),
[INFO] [stdout]    |                           ^^^^ help: try ignoring the field: `body: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/frontend/resolver.rs:223:61
[INFO] [stdout]     |
[INFO] [stdout] 223 |     fn visit_binary_expr(&mut self, lhs: &Expr, rhs: &Expr, op: &Token) -> Result<(), Error> {
[INFO] [stdout]     |                                                             ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `paren`
[INFO] [stdout]    --> src/frontend/resolver.rs:229:50
[INFO] [stdout]     |
[INFO] [stdout] 229 |     fn visit_call_expr(&mut self, callee: &Expr, paren: &Token, arguments: &Vec<Expr>) -> Result<(), Error> {
[INFO] [stdout]     |                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_paren`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> src/frontend/resolver.rs:237:49
[INFO] [stdout]     |
[INFO] [stdout] 237 |     fn visit_get_expr(&mut self, object: &Expr, name: &Token) -> Result<(), Error> {
[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/frontend/resolver.rs:242:49
[INFO] [stdout]     |
[INFO] [stdout] 242 |     fn visit_set_expr(&mut self, object: &Expr, name: &Token, value: &Expr) -> Result<(),Error>{
[INFO] [stdout]     |                                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `method`
[INFO] [stdout]    --> src/frontend/resolver.rs:248:53
[INFO] [stdout]     |
[INFO] [stdout] 248 |     fn visit_super_expr(&mut self, keyword: &Token, method: &Token) -> Result<(), Error> {
[INFO] [stdout]     |                                                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_method`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `val`
[INFO] [stdout]    --> src/frontend/resolver.rs:271:38
[INFO] [stdout]     |
[INFO] [stdout] 271 |     fn visit_literal_expr(&mut self, val: &LiteralValue) -> Result<(), Error> {
[INFO] [stdout]     |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/frontend/resolver.rs:275:62
[INFO] [stdout]     |
[INFO] [stdout] 275 |     fn visit_logical_expr(&mut self, lhs: &Expr, rhs: &Expr, op: &Token) -> Result<(), Error> {
[INFO] [stdout]     |                                                              ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `op`
[INFO] [stdout]    --> src/frontend/resolver.rs:281:36
[INFO] [stdout]     |
[INFO] [stdout] 281 |     fn visit_unary_expr(&mut self, op: &Token, rhs: &Expr) -> Result<(), Error> {
[INFO] [stdout]     |                                    ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `sync` is never used
[INFO] [stdout]    --> src/frontend/parser.rs:464:8
[INFO] [stdout]     |
[INFO] [stdout]  12 | impl Parser {
[INFO] [stdout]     | ----------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 464 |     fn sync(&mut self){
[INFO] [stdout]     |        ^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/frontend/parser.rs:47:9
[INFO] [stdout]    |
[INFO] [stdout] 47 |         self.consume(TokenType::Semicolon, "Expect ';' after variable declaration");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 47 |         let _ = self.consume(TokenType::Semicolon, "Expect ';' after variable declaration");
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/frontend/parser.rs:87:9
[INFO] [stdout]    |
[INFO] [stdout] 87 |         self.consume(TokenType::LeftParen, "Expect '(' after 'if'.");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let _ = self.consume(TokenType::LeftParen, "Expect '(' after 'if'.");
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/frontend/parser.rs:89:9
[INFO] [stdout]    |
[INFO] [stdout] 89 |         self.consume(TokenType::RightParen,"Expect ')' after if condition");
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 89 |         let _ = self.consume(TokenType::RightParen,"Expect ')' after if condition");
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/frontend/parser.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |         self.consume(TokenType::LeftParen, "Expect '(' after 'while'.");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 154 |         let _ = self.consume(TokenType::LeftParen, "Expect '(' after 'while'.");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/frontend/parser.rs:156:9
[INFO] [stdout]     |
[INFO] [stdout] 156 |         self.consume(TokenType::RightParen,"Expect ')' after condition.");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 156 |         let _ = self.consume(TokenType::RightParen,"Expect ')' after condition.");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/frontend/parser.rs:162:9
[INFO] [stdout]     |
[INFO] [stdout] 162 |         self.consume(TokenType::LeftParen, "Expect '(' after 'for'");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 162 |         let _ = self.consume(TokenType::LeftParen, "Expect '(' after 'for'");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/frontend/parser.rs:176:9
[INFO] [stdout]     |
[INFO] [stdout] 176 |         self.consume(TokenType::Semicolon,"Expeect ';' after loop condition");
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 176 |         let _ = self.consume(TokenType::Semicolon,"Expeect ';' after loop condition");
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `readNum` should have a snake case name
[INFO] [stdout]   --> src/frontend/interpreter.rs:46:13
[INFO] [stdout]    |
[INFO] [stdout] 46 |         let readNum:FxUnit = FxUnit::Callable(
[INFO] [stdout]    |             ^^^^^^^ help: convert the identifier to snake case: `read_num`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable `readString` should have a snake case name
[INFO] [stdout]   --> src/frontend/interpreter.rs:58:13
[INFO] [stdout]    |
[INFO] [stdout] 58 |         let readString:FxUnit = FxUnit::Callable(
[INFO] [stdout]    |             ^^^^^^^^^^ help: convert the identifier to snake case: `read_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/frontend/interpreter.rs:334:9
[INFO] [stdout]     |
[INFO] [stdout] 334 | /         self.exec_block(
[INFO] [stdout] 335 | |             statements,
[INFO] [stdout] 336 | |             Rc::new(RefCell::new(Environment::from(&self.env))),
[INFO] [stdout] 337 | |         );
[INFO] [stdout]     | |_________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 334 |         let _ = self.exec_block(
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/frontend/interpreter.rs:440:9
[INFO] [stdout]     |
[INFO] [stdout] 440 |         self.env.borrow_mut().assign(name, class);
[INFO] [stdout]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 440 |         let _ = self.env.borrow_mut().assign(name, class);
[INFO] [stdout]     |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/frontend/resolver.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         stmt.accept(self);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 45 |         let _ = stmt.accept(self);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/frontend/resolver.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |         expr.accept(self);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 49 |         let _ = expr.accept(self);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fxlang::frontend::expr::AstPrinter`
[INFO] [stdout]  --> src/bin/fxlang.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use fxlang::frontend::expr::AstPrinter;
[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: `std::io::stdin`
[INFO] [stdout]   --> src/bin/fxlang.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::io::stdin;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `fxlang::frontend::expr::AstPrinter`
[INFO] [stdout]  --> src/bin/fxlang.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use fxlang::frontend::expr::AstPrinter;
[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: `std::io::stdin`
[INFO] [stdout]   --> src/bin/fxlang.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 | use std::io::stdin;
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.35s
[INFO] running `Command { std: "docker" "inspect" "707944624f588166fc0a233db82df40738e84e7109bcc534243ab735c100f32a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "707944624f588166fc0a233db82df40738e84e7109bcc534243ab735c100f32a", kill_on_drop: false }`
[INFO] [stdout] 707944624f588166fc0a233db82df40738e84e7109bcc534243ab735c100f32a
