[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] testing therealansh/fxlang against try#9f93af291970322f4f1c6315ccde4d7078201159 for pr-146098-6
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ftherealansh%2Ffxlang" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/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-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/therealansh/fxlang on toolchain 9f93af291970322f4f1c6315ccde4d7078201159
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "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" "+9f93af291970322f4f1c6315ccde4d7078201159" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b64725f302f49c1c88c478fe75dd4a621b0f0a5db403ee6823876ec4766a361
[INFO] running `Command { std: "docker" "start" "-a" "0b64725f302f49c1c88c478fe75dd4a621b0f0a5db403ee6823876ec4766a361", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b64725f302f49c1c88c478fe75dd4a621b0f0a5db403ee6823876ec4766a361", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b64725f302f49c1c88c478fe75dd4a621b0f0a5db403ee6823876ec4766a361", kill_on_drop: false }`
[INFO] [stdout] 0b64725f302f49c1c88c478fe75dd4a621b0f0a5db403ee6823876ec4766a361
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fcb7b6a9ccf5dedd6bb2d37570aabb35dabefebc2c35bf697c496ad5ec9aea03
[INFO] running `Command { std: "docker" "start" "-a" "fcb7b6a9ccf5dedd6bb2d37570aabb35dabefebc2c35bf697c496ad5ec9aea03", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.97
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling colored v2.0.0
[INFO] [stderr]    Compiling 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 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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.73s
[INFO] running `Command { std: "docker" "inspect" "fcb7b6a9ccf5dedd6bb2d37570aabb35dabefebc2c35bf697c496ad5ec9aea03", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcb7b6a9ccf5dedd6bb2d37570aabb35dabefebc2c35bf697c496ad5ec9aea03", kill_on_drop: false }`
[INFO] [stdout] fcb7b6a9ccf5dedd6bb2d37570aabb35dabefebc2c35bf697c496ad5ec9aea03
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 14070999007d6c2fb9913250b15af7f2cd2291683a42ab1c28b58c287f6e2abc
[INFO] running `Command { std: "docker" "start" "-a" "14070999007d6c2fb9913250b15af7f2cd2291683a42ab1c28b58c287f6e2abc", kill_on_drop: false }`
[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] [stderr]    Compiling fxlang v0.1.0 (/opt/rustwide/workdir)
[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: `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] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.04s
[INFO] running `Command { std: "docker" "inspect" "14070999007d6c2fb9913250b15af7f2cd2291683a42ab1c28b58c287f6e2abc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14070999007d6c2fb9913250b15af7f2cd2291683a42ab1c28b58c287f6e2abc", kill_on_drop: false }`
[INFO] [stdout] 14070999007d6c2fb9913250b15af7f2cd2291683a42ab1c28b58c287f6e2abc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+9f93af291970322f4f1c6315ccde4d7078201159" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 600e7ae17235153ef8f0343054c1fe83823478c7bb17ad0851a60b1a42ceafb6
[INFO] running `Command { std: "docker" "start" "-a" "600e7ae17235153ef8f0343054c1fe83823478c7bb17ad0851a60b1a42ceafb6", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `crate::frontend::expr::Expr::Literal`
[INFO] [stderr]  --> src/frontend/parser.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::frontend::expr::Expr::Literal;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around method argument
[INFO] [stderr]   --> src/frontend/parser.rs:55:30
[INFO] [stderr]    |
[INFO] [stderr] 55 |         else if self.t_match((&[TokenType::Return])) {
[INFO] [stderr]    |                              ^                    ^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]    |
[INFO] [stderr] 55 -         else if self.t_match((&[TokenType::Return])) {
[INFO] [stderr] 55 +         else if self.t_match(&[TokenType::Return] ) {
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/frontend/parser.rs:230:11
[INFO] [stderr]     |
[INFO] [stderr] 230 |         if(self.is_at_end()) {
[INFO] [stderr]     |           ^                ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 230 -         if(self.is_at_end()) {
[INFO] [stderr] 230 +         if self.is_at_end()  {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/frontend/parser.rs:245:11
[INFO] [stderr]     |
[INFO] [stderr] 245 |         if(!self.is_at_end()){
[INFO] [stderr]     |           ^                 ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 245 -         if(!self.is_at_end()){
[INFO] [stderr] 245 +         if !self.is_at_end() {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unnecessary parentheses around `if` condition
[INFO] [stderr]    --> src/frontend/parser.rs:467:15
[INFO] [stderr]     |
[INFO] [stderr] 467 |             if(self.previous().token_type==TokenType::Semicolon) { return; }
[INFO] [stderr]     |               ^                                                ^
[INFO] [stderr]     |
[INFO] [stderr] help: remove these parentheses
[INFO] [stderr]     |
[INFO] [stderr] 467 -             if(self.previous().token_type==TokenType::Semicolon) { return; }
[INFO] [stderr] 467 +             if self.previous().token_type==TokenType::Semicolon  { return; }
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io`
[INFO] [stderr]   --> src/frontend/interpreter.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::io;
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `TokenType`
[INFO] [stderr]  --> src/frontend/fxfx.rs:2:38
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::frontend::tokens::{Token, TokenType};
[INFO] [stderr]   |                                      ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Visitor`
[INFO] [stderr]  --> src/frontend/resolver.rs:2:29
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::frontend::expr::{Visitor, Expr, LiteralValue};
[INFO] [stderr]   |                             ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `parser_error`
[INFO] [stderr]  --> src/frontend/resolver.rs:4:37
[INFO] [stderr]   |
[INFO] [stderr] 4 | use crate::frontend::error::{Error, parser_error, report};
[INFO] [stderr]   |                                     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `callee`
[INFO] [stderr]    --> src/frontend/expr.rs:151:35
[INFO] [stderr]     |
[INFO] [stderr] 151 |     fn visit_call_expr(&mut self, callee: &Expr, paren: &Token, arguments: &Vec<Expr>) -> Result<String, Error> {
[INFO] [stderr]     |                                   ^^^^^^ help: if this is intentional, prefix it with an underscore: `_callee`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `paren`
[INFO] [stderr]    --> src/frontend/expr.rs:151:50
[INFO] [stderr]     |
[INFO] [stderr] 151 |     fn visit_call_expr(&mut self, callee: &Expr, paren: &Token, arguments: &Vec<Expr>) -> Result<String, Error> {
[INFO] [stderr]     |                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_paren`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arguments`
[INFO] [stderr]    --> src/frontend/expr.rs:151:65
[INFO] [stderr]     |
[INFO] [stderr] 151 |     fn visit_call_expr(&mut self, callee: &Expr, paren: &Token, arguments: &Vec<Expr>) -> Result<String, Error> {
[INFO] [stderr]     |                                                                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_arguments`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `object`
[INFO] [stderr]    --> src/frontend/expr.rs:155:34
[INFO] [stderr]     |
[INFO] [stderr] 155 |     fn visit_get_expr(&mut self, object: &Expr, name: &Token) -> Result<String, Error> {
[INFO] [stderr]     |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_object`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/frontend/expr.rs:155:49
[INFO] [stderr]     |
[INFO] [stderr] 155 |     fn visit_get_expr(&mut self, object: &Expr, name: &Token) -> Result<String, Error> {
[INFO] [stderr]     |                                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `object`
[INFO] [stderr]    --> src/frontend/expr.rs:159:34
[INFO] [stderr]     |
[INFO] [stderr] 159 |     fn visit_set_expr(&mut self, object: &Expr, name: &Token, value: &Expr) -> Result<String, Error> {
[INFO] [stderr]     |                                  ^^^^^^ help: if this is intentional, prefix it with an underscore: `_object`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/frontend/expr.rs:159:49
[INFO] [stderr]     |
[INFO] [stderr] 159 |     fn visit_set_expr(&mut self, object: &Expr, name: &Token, value: &Expr) -> Result<String, Error> {
[INFO] [stderr]     |                                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/frontend/expr.rs:159:63
[INFO] [stderr]     |
[INFO] [stderr] 159 |     fn visit_set_expr(&mut self, object: &Expr, name: &Token, value: &Expr) -> Result<String, Error> {
[INFO] [stderr]     |                                                               ^^^^^ help: if this is intentional, prefix it with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `keyword`
[INFO] [stderr]    --> src/frontend/expr.rs:163:36
[INFO] [stderr]     |
[INFO] [stderr] 163 |     fn visit_super_expr(&mut self, keyword: &Token, method: &Token) -> Result<String, Error> {
[INFO] [stderr]     |                                    ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keyword`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `method`
[INFO] [stderr]    --> src/frontend/expr.rs:163:53
[INFO] [stderr]     |
[INFO] [stderr] 163 |     fn visit_super_expr(&mut self, keyword: &Token, method: &Token) -> Result<String, Error> {
[INFO] [stderr]     |                                                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_method`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `keyword`
[INFO] [stderr]    --> src/frontend/expr.rs:167:35
[INFO] [stderr]     |
[INFO] [stderr] 167 |     fn visit_this_expr(&mut self, keyword: &Token) -> Result<String, Error> {
[INFO] [stderr]     |                                   ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keyword`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend/parser.rs:260:13
[INFO] [stderr]     |
[INFO] [stderr] 260 |         let mut expr = self.or_()?;
[INFO] [stderr]     |             ----^^^^
[INFO] [stderr]     |             |
[INFO] [stderr]     |             help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/frontend/parser.rs:472:19
[INFO] [stderr]     |
[INFO] [stderr] 471 |                 | TokenType::Var
[INFO] [stderr]     |                   -------------- matches all the relevant values
[INFO] [stderr] 472 |                 | TokenType::Var
[INFO] [stderr]     |                   ^^^^^^^^^^^^^^ no value can reach this
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/frontend/interpreter.rs:61:32
[INFO] [stderr]    |
[INFO] [stderr] 61 |                 body:Box::new(|args:&Vec<FxUnit>|{
[INFO] [stderr]    |                                ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/frontend/interpreter.rs:49:33
[INFO] [stderr]    |
[INFO] [stderr] 49 |                 body: Box::new(|args:&Vec<FxUnit>|{
[INFO] [stderr]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]   --> src/frontend/interpreter.rs:30:33
[INFO] [stderr]    |
[INFO] [stderr] 30 |                 body: Box::new(|args:&Vec<FxUnit>|{
[INFO] [stderr]    |                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `keyword`
[INFO] [stderr]    --> src/frontend/interpreter.rs:389:37
[INFO] [stderr]     |
[INFO] [stderr] 389 |     fn visit_return_stmt(&mut self, keyword: &Token, value: &Option<Expr>) -> Result<(), Error> {
[INFO] [stderr]     |                                     ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_keyword`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/frontend/fxfx.rs:34:21
[INFO] [stderr]    |
[INFO] [stderr] 34 |                 let mut env = Rc::new(RefCell::new(Environment::from(closure)));
[INFO] [stderr]    |                     ----^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/frontend/fxfx.rs:69:21
[INFO] [stderr]    |
[INFO] [stderr] 69 |                 let mut env = Rc::new(RefCell::new(Environment::from(closure)));
[INFO] [stderr]    |                     ----^^^
[INFO] [stderr]    |                     |
[INFO] [stderr]    |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `body`
[INFO] [stderr]   --> src/frontend/fxfx.rs:67:27
[INFO] [stderr]    |
[INFO] [stderr] 67 |             FxFx::Native {body, ..} => unreachable!(),
[INFO] [stderr]    |                           ^^^^ help: try ignoring the field: `body: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]    --> src/frontend/resolver.rs:223:61
[INFO] [stderr]     |
[INFO] [stderr] 223 |     fn visit_binary_expr(&mut self, lhs: &Expr, rhs: &Expr, op: &Token) -> Result<(), Error> {
[INFO] [stderr]     |                                                             ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `paren`
[INFO] [stderr]    --> src/frontend/resolver.rs:229:50
[INFO] [stderr]     |
[INFO] [stderr] 229 |     fn visit_call_expr(&mut self, callee: &Expr, paren: &Token, arguments: &Vec<Expr>) -> Result<(), Error> {
[INFO] [stderr]     |                                                  ^^^^^ help: if this is intentional, prefix it with an underscore: `_paren`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/frontend/resolver.rs:237:49
[INFO] [stderr]     |
[INFO] [stderr] 237 |     fn visit_get_expr(&mut self, object: &Expr, name: &Token) -> Result<(), Error> {
[INFO] [stderr]     |                                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/frontend/resolver.rs:242:49
[INFO] [stderr]     |
[INFO] [stderr] 242 |     fn visit_set_expr(&mut self, object: &Expr, name: &Token, value: &Expr) -> Result<(),Error>{
[INFO] [stderr]     |                                                 ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `method`
[INFO] [stderr]    --> src/frontend/resolver.rs:248:53
[INFO] [stderr]     |
[INFO] [stderr] 248 |     fn visit_super_expr(&mut self, keyword: &Token, method: &Token) -> Result<(), Error> {
[INFO] [stderr]     |                                                     ^^^^^^ help: if this is intentional, prefix it with an underscore: `_method`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `val`
[INFO] [stderr]    --> src/frontend/resolver.rs:271:38
[INFO] [stderr]     |
[INFO] [stderr] 271 |     fn visit_literal_expr(&mut self, val: &LiteralValue) -> Result<(), Error> {
[INFO] [stderr]     |                                      ^^^ help: if this is intentional, prefix it with an underscore: `_val`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]    --> src/frontend/resolver.rs:275:62
[INFO] [stderr]     |
[INFO] [stderr] 275 |     fn visit_logical_expr(&mut self, lhs: &Expr, rhs: &Expr, op: &Token) -> Result<(), Error> {
[INFO] [stderr]     |                                                              ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `op`
[INFO] [stderr]    --> src/frontend/resolver.rs:281:36
[INFO] [stderr]     |
[INFO] [stderr] 281 |     fn visit_unary_expr(&mut self, op: &Token, rhs: &Expr) -> Result<(), Error> {
[INFO] [stderr]     |                                    ^^ help: if this is intentional, prefix it with an underscore: `_op`
[INFO] [stderr] 
[INFO] [stderr] warning: method `sync` is never used
[INFO] [stderr]    --> src/frontend/parser.rs:464:8
[INFO] [stderr]     |
[INFO] [stderr]  12 | impl Parser {
[INFO] [stderr]     | ----------- method in this implementation
[INFO] [stderr] ...
[INFO] [stderr] 464 |     fn sync(&mut self){
[INFO] [stderr]     |        ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/frontend/parser.rs:47:9
[INFO] [stderr]    |
[INFO] [stderr] 47 |         self.consume(TokenType::Semicolon, "Expect ';' after variable declaration");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 47 |         let _ = self.consume(TokenType::Semicolon, "Expect ';' after variable declaration");
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/frontend/parser.rs:87:9
[INFO] [stderr]    |
[INFO] [stderr] 87 |         self.consume(TokenType::LeftParen, "Expect '(' after 'if'.");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 87 |         let _ = self.consume(TokenType::LeftParen, "Expect '(' after 'if'.");
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/frontend/parser.rs:89:9
[INFO] [stderr]    |
[INFO] [stderr] 89 |         self.consume(TokenType::RightParen,"Expect ')' after if condition");
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 89 |         let _ = self.consume(TokenType::RightParen,"Expect ')' after if condition");
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/frontend/parser.rs:154:9
[INFO] [stderr]     |
[INFO] [stderr] 154 |         self.consume(TokenType::LeftParen, "Expect '(' after 'while'.");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 154 |         let _ = self.consume(TokenType::LeftParen, "Expect '(' after 'while'.");
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/frontend/parser.rs:156:9
[INFO] [stderr]     |
[INFO] [stderr] 156 |         self.consume(TokenType::RightParen,"Expect ')' after condition.");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 156 |         let _ = self.consume(TokenType::RightParen,"Expect ')' after condition.");
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/frontend/parser.rs:162:9
[INFO] [stderr]     |
[INFO] [stderr] 162 |         self.consume(TokenType::LeftParen, "Expect '(' after 'for'");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 162 |         let _ = self.consume(TokenType::LeftParen, "Expect '(' after 'for'");
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/frontend/parser.rs:176:9
[INFO] [stderr]     |
[INFO] [stderr] 176 |         self.consume(TokenType::Semicolon,"Expeect ';' after loop condition");
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 176 |         let _ = self.consume(TokenType::Semicolon,"Expeect ';' after loop condition");
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: variable `readNum` should have a snake case name
[INFO] [stderr]   --> src/frontend/interpreter.rs:46:13
[INFO] [stderr]    |
[INFO] [stderr] 46 |         let readNum:FxUnit = FxUnit::Callable(
[INFO] [stderr]    |             ^^^^^^^ help: convert the identifier to snake case: `read_num`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` (part of `#[warn(nonstandard_style)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `readString` should have a snake case name
[INFO] [stderr]   --> src/frontend/interpreter.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |         let readString:FxUnit = FxUnit::Callable(
[INFO] [stderr]    |             ^^^^^^^^^^ help: convert the identifier to snake case: `read_string`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/frontend/interpreter.rs:334:9
[INFO] [stderr]     |
[INFO] [stderr] 334 | /         self.exec_block(
[INFO] [stderr] 335 | |             statements,
[INFO] [stderr] 336 | |             Rc::new(RefCell::new(Environment::from(&self.env))),
[INFO] [stderr] 337 | |         );
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 334 |         let _ = self.exec_block(
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/frontend/interpreter.rs:440:9
[INFO] [stderr]     |
[INFO] [stderr] 440 |         self.env.borrow_mut().assign(name, class);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 440 |         let _ = self.env.borrow_mut().assign(name, class);
[INFO] [stderr]     |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/frontend/resolver.rs:45:9
[INFO] [stderr]    |
[INFO] [stderr] 45 |         stmt.accept(self);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 45 |         let _ = stmt.accept(self);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/frontend/resolver.rs:49:9
[INFO] [stderr]    |
[INFO] [stderr] 49 |         expr.accept(self);
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]    |
[INFO] [stderr] 49 |         let _ = expr.accept(self);
[INFO] [stderr]    |         +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: `fxlang` (lib) generated 51 warnings (run `cargo fix --lib -p fxlang` to apply 36 suggestions)
[INFO] [stderr] warning: unused import: `fxlang::frontend::expr::AstPrinter`
[INFO] [stderr]  --> src/bin/fxlang.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use fxlang::frontend::expr::AstPrinter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::stdin`
[INFO] [stderr]   --> src/bin/fxlang.rs:10:5
[INFO] [stderr]    |
[INFO] [stderr] 10 | use std::io::stdin;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `fxlang` (bin "fxlang" test) generated 2 warnings (run `cargo fix --bin "fxlang" -p fxlang --tests` to apply 2 suggestions)
[INFO] [stderr] warning: `fxlang` (lib test) generated 51 warnings (51 duplicates)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/fxlang-9782651bda0a5579)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test frontend::expr::tests::default_test ... ok
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stdout] test frontend::lexer::tests::default_test ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- frontend::lexer::tests::default_test stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'frontend::lexer::tests::default_test' (26) panicked at src/frontend/lexer.rs:217:9:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: 4
[INFO] [stdout]  right: 5
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x590daab2aed2 - std::backtrace_rs::backtrace::libunwind::trace::h16affffe904e891e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x590daab2aed2 - std::backtrace_rs::backtrace::trace_unsynchronized::h5c14b13373ed4150
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x590daab2aed2 - std::sys::backtrace::_print_fmt::hcbb507f162c816cc
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x590daab2aed2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h8be9aa933f14675f
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x590daab3b2ef - core::fmt::rt::Argument::fmt::h30ed739d33467c3a
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x590daab3b2ef - core::fmt::write::hfd0efbb002ac7eea
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/fmt/mod.rs:1469:25
[INFO] [stdout]    6:     0x590daaaf89a3 - std::io::default_write_fmt::hd6d24501f2d7f8d3
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x590daaaf89a3 - std::io::Write::write_fmt::h79eca2f72fc24111
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x590daab04742 - std::sys::backtrace::BacktraceLock::print::hf2554f6030d393f7
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x590daab0921f - std::panicking::default_hook::{{closure}}::h8873121c56335b01
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x590daab090b1 - std::panicking::default_hook::hbafefc2d196267a2
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x590daaacc27e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::ha834d5846f91b30b
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   12:     0x590daaacc27e - test::test_main_with_exit_callback::{{closure}}::h63c167737eecb025
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x590daab0982f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hbf9b0f7a281291fd
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2099:9
[INFO] [stdout]   14:     0x590daab0982f - std::panicking::panic_with_hook::h9f5b09d5adc1a745
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x590daab0968a - std::panicking::panic_handler::{{closure}}::h08111e483bdf6a89
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x590daab04879 - std::sys::backtrace::__rust_end_short_backtrace::h1b86e3414ecbbe8d
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x590daaaed16d - __rustc[b292c645e8102103]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x590daab44720 - core::panicking::panic_fmt::h31cc490ecc8cc1fa
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x590daab44523 - core::panicking::assert_failed_inner::h865658b89c1b891d
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panicking.rs:444:17
[INFO] [stdout]   20:     0x590daab44367 - core::panicking::assert_failed::hda11ef7e070fa843
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panicking.rs:399:5
[INFO] [stdout]   21:     0x590daaaa76cf - fxlang::frontend::lexer::tests::default_test::h186c7eb4d9d8653b
[INFO] [stdout]                                at /opt/rustwide/workdir/src/frontend/lexer.rs:217:9
[INFO] [stdout]   22:     0x590daaaa7a37 - fxlang::frontend::lexer::tests::default_test::{{closure}}::hbe30c1f3ea46fd53
[INFO] [stdout]                                at /opt/rustwide/workdir/src/frontend/lexer.rs:206:22
[INFO] [stdout]   23:     0x590daaa9f496 - core::ops::function::FnOnce::call_once::h270e9320c7ca1d2f
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x590daaacc07b - core::ops::function::FnOnce::call_once::h2b2de5fdd23aab3e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x590daaacc07b - test::__rust_begin_short_backtrace::he551dd004770be01
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x590daaae00dd - test::run_test_in_process::{{closure}}::h5f0b44080a35ed87
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x590daaae00dd - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4dbf65d14893ecf5
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   28:     0x590daaae00dd - std::panicking::catch_unwind::do_call::hc37c563b8a006285
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29:     0x590daaae00dd - std::panicking::catch_unwind::h616b6e2e7a27f612
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30:     0x590daaae00dd - std::panic::catch_unwind::h1e788dd57758e6d8
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x590daaae00dd - test::run_test_in_process::hf073c2764f29f8ad
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x590daaae00dd - test::run_test::{{closure}}::h3dc46b7a0c340fa6
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x590daaab9624 - test::run_test::{{closure}}::h6a4da3c57ef4505f
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x590daaab9624 - std::sys::backtrace::__rust_begin_short_backtrace::hfd8e44bc311a5d57
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   35:     0x590daaabce7a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h57c4ddec344fe24c
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/thread/mod.rs:562:17
[INFO] [stdout]   36:     0x590daaabce7a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd7cbe09591f06dfb
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   37:     0x590daaabce7a - std::panicking::catch_unwind::do_call::hdcd076e8e993dfbc
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:590:40
[INFO] [stdout]   38:     0x590daaabce7a - std::panicking::catch_unwind::h8f9f675f3756eab1
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panicking.rs:553:19
[INFO] [stdout]   39:     0x590daaabce7a - std::panic::catch_unwind::he8f74a93abeceb9b
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x590daaabce7a - std::thread::Builder::spawn_unchecked_::{{closure}}::he43db13a2caa41d5
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/thread/mod.rs:560:30
[INFO] [stdout]   41:     0x590daaabce7a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h8f3531a7e0d83514
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x590daaaffc7f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6ff05134d80ef20e
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/alloc/src/boxed.rs:2085:9
[INFO] [stdout]   43:     0x590daaaffc7f - std::sys::thread::unix::Thread::new::thread_start::h9a4a41a076a486e0
[INFO] [stdout]                                at /rustc/9f93af291970322f4f1c6315ccde4d7078201159/library/std/src/sys/thread/unix.rs:124:17
[INFO] [stdout]   44:     0x7e21e14eaaa4 - <unknown>
[INFO] [stdout]   45:     0x7e21e1577a64 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     frontend::lexer::tests::default_test
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "600e7ae17235153ef8f0343054c1fe83823478c7bb17ad0851a60b1a42ceafb6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "600e7ae17235153ef8f0343054c1fe83823478c7bb17ad0851a60b1a42ceafb6", kill_on_drop: false }`
[INFO] [stdout] 600e7ae17235153ef8f0343054c1fe83823478c7bb17ad0851a60b1a42ceafb6
