[INFO] cloning repository https://github.com/kakoc/myox_interpreter
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/kakoc/myox_interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkakoc%2Fmyox_interpreter"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkakoc%2Fmyox_interpreter'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 05f38d69c31a0798912e668ea12d66adb3c1ab17
[INFO] checking kakoc/myox_interpreter against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fkakoc%2Fmyox_interpreter" "/workspace/builds/worker-6/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/kakoc/myox_interpreter on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/kakoc/myox_interpreter
[INFO] finished tweaking git repo https://github.com/kakoc/myox_interpreter
[INFO] tweaked toml for git repo https://github.com/kakoc/myox_interpreter written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/kakoc/myox_interpreter already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 09815cee94f016f1c6875bfc3c232ebfadb46d4eaf3254edbd7cfe82344b045f
[INFO] running `"docker" "start" "-a" "09815cee94f016f1c6875bfc3c232ebfadb46d4eaf3254edbd7cfe82344b045f"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking myox_interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `crate::scanner::Literal`
[INFO] [stderr]  --> src/ast_printer.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::scanner::Literal;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::scanner::Token`
[INFO] [stderr]  --> src/ast_printer.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::scanner::Token;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ast_printer.rs:55:37
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub fn accept<T>(&self, v: &mut Visitor<T>) -> T {
[INFO] [stderr]    |                                     ^^^^^^^^^^ help: use `dyn`: `dyn Visitor<T>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::ast_printer`
[INFO] [stderr]  --> src/environment.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::ast_printer;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::ast_printer::AstPrinter`
[INFO] [stderr]  --> src/interpreter.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::ast_printer::AstPrinter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/statement.rs:23:34
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn accept(&self, v: &mut Visitor) -> () {
[INFO] [stderr]    |                                  ^^^^^^^ help: use `dyn`: `dyn Visitor`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::scanner::Literal`
[INFO] [stderr]  --> src/ast_printer.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::scanner::Literal;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::scanner::Token`
[INFO] [stderr]  --> src/ast_printer.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::scanner::Token;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ast_printer.rs:55:37
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub fn accept<T>(&self, v: &mut Visitor<T>) -> T {
[INFO] [stderr]    |                                     ^^^^^^^^^^ help: use `dyn`: `dyn Visitor<T>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::ast_printer`
[INFO] [stderr]  --> src/environment.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::ast_printer;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::ast_printer::AstPrinter`
[INFO] [stderr]  --> src/interpreter.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::ast_printer::AstPrinter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/statement.rs:23:34
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn accept(&self, v: &mut Visitor) -> () {
[INFO] [stderr]    |                                  ^^^^^^^ help: use `dyn`: `dyn Visitor`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/ast_printer.rs:49:50
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn visit_assignment(&mut self, _expr: &Expr, name: &scanner::Token, value: &Expr) -> T {
[INFO] [stderr]    |                                                  ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/ast_printer.rs:49:73
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn visit_assignment(&mut self, _expr: &Expr, name: &scanner::Token, value: &Expr) -> T {
[INFO] [stderr]    |                                                                         ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `equals`
[INFO] [stderr]   --> src/parser.rs:67:17
[INFO] [stderr]    |
[INFO] [stderr] 67 |             let equals = self.previous();
[INFO] [stderr]    |                 ^^^^^^ help: consider prefixing with an underscore: `_equals`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/statement.rs:17:34
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn visit_var_stmt(&mut self, name: &scanner::Token, value: &Expr) {}
[INFO] [stderr]    |                                  ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/statement.rs:17:57
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn visit_var_stmt(&mut self, name: &scanner::Token, value: &Expr) {}
[INFO] [stderr]    |                                                         ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stmts`
[INFO] [stderr]   --> src/statement.rs:19:36
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn visit_block_stmt(&mut self, stmts: Vec<Stmt>) {}
[INFO] [stderr]    |                                    ^^^^^ help: consider prefixing with an underscore: `_stmts`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]   --> src/statement.rs:25:25
[INFO] [stderr]    |
[INFO] [stderr] 25 |             Stmt::Print(expr) => v.visit_print_stmt(self),
[INFO] [stderr]    |                         ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]   --> src/statement.rs:26:30
[INFO] [stderr]    |
[INFO] [stderr] 26 |             Stmt::Expression(expr) => v.visit_expression_stmt(self),
[INFO] [stderr]    |                              ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/ast_printer.rs:49:50
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn visit_assignment(&mut self, _expr: &Expr, name: &scanner::Token, value: &Expr) -> T {
[INFO] [stderr]    |                                                  ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/ast_printer.rs:49:73
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn visit_assignment(&mut self, _expr: &Expr, name: &scanner::Token, value: &Expr) -> T {
[INFO] [stderr]    |                                                                         ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `equals`
[INFO] [stderr]   --> src/parser.rs:67:17
[INFO] [stderr]    |
[INFO] [stderr] 67 |             let equals = self.previous();
[INFO] [stderr]    |                 ^^^^^^ help: consider prefixing with an underscore: `_equals`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/statement.rs:17:34
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn visit_var_stmt(&mut self, name: &scanner::Token, value: &Expr) {}
[INFO] [stderr]    |                                  ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/statement.rs:17:57
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn visit_var_stmt(&mut self, name: &scanner::Token, value: &Expr) {}
[INFO] [stderr]    |                                                         ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stmts`
[INFO] [stderr]   --> src/statement.rs:19:36
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn visit_block_stmt(&mut self, stmts: Vec<Stmt>) {}
[INFO] [stderr]    |                                    ^^^^^ help: consider prefixing with an underscore: `_stmts`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]   --> src/statement.rs:25:25
[INFO] [stderr]    |
[INFO] [stderr] 25 |             Stmt::Print(expr) => v.visit_print_stmt(self),
[INFO] [stderr]    |                         ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]   --> src/statement.rs:26:30
[INFO] [stderr]    |
[INFO] [stderr] 26 |             Stmt::Expression(expr) => v.visit_expression_stmt(self),
[INFO] [stderr]    |                              ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr] 
[INFO] [stderr] warning: function cannot return without recursing
[INFO] [stderr]   --> src/environment.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub fn assign(&mut self, name: scanner::Token, value: scanner::Literal) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stderr] ...
[INFO] [stderr] 52 |                 return env.assign(name.clone(), value.clone());
[INFO] [stderr]    |                        --------------------------------------- recursive call site
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stderr]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stderr] 
[INFO] [stderr] warning: function cannot return without recursing
[INFO] [stderr]   --> src/environment.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub fn assign(&mut self, name: scanner::Token, value: scanner::Literal) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stderr] ...
[INFO] [stderr] 52 |                 return env.assign(name.clone(), value.clone());
[INFO] [stderr]    |                        --------------------------------------- recursive call site
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stderr]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/scanner.rs:277:9
[INFO] [stderr]     |
[INFO] [stderr] 276 |         let value = &self.source[self.start + 1..self.current - 1];
[INFO] [stderr]     |                      ----------- immutable borrow occurs here
[INFO] [stderr] 277 |         self.add_token_with_literal(TokenType::String, Literal::S(value.to_string()));
[INFO] [stderr]     |         ^^^^ mutable borrow occurs here                           ----- immutable borrow later used here
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/scanner.rs:277:9
[INFO] [stderr]     |
[INFO] [stderr] 276 |         let value = &self.source[self.start + 1..self.current - 1];
[INFO] [stderr]     |                      ----------- immutable borrow occurs here
[INFO] [stderr] 277 |         self.add_token_with_literal(TokenType::String, Literal::S(value.to_string()));
[INFO] [stderr]     |         ^^^^ mutable borrow occurs here                           ----- immutable borrow later used here
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::scanner::Literal`
[INFO] [stderr]  --> src/ast_printer.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::scanner::Literal;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::scanner::Token`
[INFO] [stderr]  --> src/ast_printer.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::scanner::Token;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ast_printer.rs:55:37
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub fn accept<T>(&self, v: &mut Visitor<T>) -> T {
[INFO] [stderr]    |                                     ^^^^^^^^^^ help: use `dyn`: `dyn Visitor<T>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::ast_printer`
[INFO] [stderr]  --> src/environment.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::ast_printer;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::ast_printer::AstPrinter`
[INFO] [stderr]  --> src/interpreter.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::ast_printer::AstPrinter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/statement.rs:23:34
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn accept(&self, v: &mut Visitor) -> () {
[INFO] [stderr]    |                                  ^^^^^^^ help: use `dyn`: `dyn Visitor`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::process`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::process;
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ast_printer::Expr`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use ast_printer::Expr;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `parser::Parser`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use parser::Parser;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::scanner::Literal`
[INFO] [stderr]  --> src/ast_printer.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use crate::scanner::Literal;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::scanner::Token`
[INFO] [stderr]  --> src/ast_printer.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::scanner::Token;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/ast_printer.rs:55:37
[INFO] [stderr]    |
[INFO] [stderr] 55 |     pub fn accept<T>(&self, v: &mut Visitor<T>) -> T {
[INFO] [stderr]    |                                     ^^^^^^^^^^ help: use `dyn`: `dyn Visitor<T>`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::ast_printer`
[INFO] [stderr]  --> src/environment.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use crate::ast_printer;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::ast_printer::AstPrinter`
[INFO] [stderr]  --> src/interpreter.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use crate::ast_printer::AstPrinter;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/statement.rs:23:34
[INFO] [stderr]    |
[INFO] [stderr] 23 |     pub fn accept(&self, v: &mut Visitor) -> () {
[INFO] [stderr]    |                                  ^^^^^^^ help: use `dyn`: `dyn Visitor`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::process`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::process;
[INFO] [stderr]    |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ast_printer::Expr`
[INFO] [stderr]   --> src/main.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | use ast_printer::Expr;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `parser::Parser`
[INFO] [stderr]   --> src/main.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 | use parser::Parser;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]   --> tests/scanner.rs:10:9
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let tokens = scanner.scan_tokens();
[INFO] [stderr]    |         ^^^^^^ help: consider prefixing with an underscore: `_tokens`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `statements`
[INFO] [stderr]   --> src/main.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |             let statements = run_file(path_to_file.to_string());
[INFO] [stderr]    |                 ^^^^^^^^^^ help: consider prefixing with an underscore: `_statements`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/ast_printer.rs:49:50
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn visit_assignment(&mut self, _expr: &Expr, name: &scanner::Token, value: &Expr) -> T {
[INFO] [stderr]    |                                                  ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/ast_printer.rs:49:73
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn visit_assignment(&mut self, _expr: &Expr, name: &scanner::Token, value: &Expr) -> T {
[INFO] [stderr]    |                                                                         ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `equals`
[INFO] [stderr]   --> src/parser.rs:67:17
[INFO] [stderr]    |
[INFO] [stderr] 67 |             let equals = self.previous();
[INFO] [stderr]    |                 ^^^^^^ help: consider prefixing with an underscore: `_equals`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/statement.rs:17:34
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn visit_var_stmt(&mut self, name: &scanner::Token, value: &Expr) {}
[INFO] [stderr]    |                                  ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/statement.rs:17:57
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn visit_var_stmt(&mut self, name: &scanner::Token, value: &Expr) {}
[INFO] [stderr]    |                                                         ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stmts`
[INFO] [stderr]   --> src/statement.rs:19:36
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn visit_block_stmt(&mut self, stmts: Vec<Stmt>) {}
[INFO] [stderr]    |                                    ^^^^^ help: consider prefixing with an underscore: `_stmts`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]   --> src/statement.rs:25:25
[INFO] [stderr]    |
[INFO] [stderr] 25 |             Stmt::Print(expr) => v.visit_print_stmt(self),
[INFO] [stderr]    |                         ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]   --> src/statement.rs:26:30
[INFO] [stderr]    |
[INFO] [stderr] 26 |             Stmt::Expression(expr) => v.visit_expression_stmt(self),
[INFO] [stderr]    |                              ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr] 
[INFO] [stderr] warning: function cannot return without recursing
[INFO] [stderr]   --> src/environment.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub fn assign(&mut self, name: scanner::Token, value: scanner::Literal) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stderr] ...
[INFO] [stderr] 52 |                 return env.assign(name.clone(), value.clone());
[INFO] [stderr]    |                        --------------------------------------- recursive call site
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stderr]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `statements`
[INFO] [stderr]   --> src/main.rs:46:17
[INFO] [stderr]    |
[INFO] [stderr] 46 |             let statements = run_file(path_to_file.to_string());
[INFO] [stderr]    |                 ^^^^^^^^^^ help: consider prefixing with an underscore: `_statements`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/ast_printer.rs:49:50
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn visit_assignment(&mut self, _expr: &Expr, name: &scanner::Token, value: &Expr) -> T {
[INFO] [stderr]    |                                                  ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/ast_printer.rs:49:73
[INFO] [stderr]    |
[INFO] [stderr] 49 |     fn visit_assignment(&mut self, _expr: &Expr, name: &scanner::Token, value: &Expr) -> T {
[INFO] [stderr]    |                                                                         ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `equals`
[INFO] [stderr]   --> src/parser.rs:67:17
[INFO] [stderr]    |
[INFO] [stderr] 67 |             let equals = self.previous();
[INFO] [stderr]    |                 ^^^^^^ help: consider prefixing with an underscore: `_equals`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/statement.rs:17:34
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn visit_var_stmt(&mut self, name: &scanner::Token, value: &Expr) {}
[INFO] [stderr]    |                                  ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]   --> src/statement.rs:17:57
[INFO] [stderr]    |
[INFO] [stderr] 17 |     fn visit_var_stmt(&mut self, name: &scanner::Token, value: &Expr) {}
[INFO] [stderr]    |                                                         ^^^^^ help: consider prefixing with an underscore: `_value`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `stmts`
[INFO] [stderr]   --> src/statement.rs:19:36
[INFO] [stderr]    |
[INFO] [stderr] 19 |     fn visit_block_stmt(&mut self, stmts: Vec<Stmt>) {}
[INFO] [stderr]    |                                    ^^^^^ help: consider prefixing with an underscore: `_stmts`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]   --> src/statement.rs:25:25
[INFO] [stderr]    |
[INFO] [stderr] 25 |             Stmt::Print(expr) => v.visit_print_stmt(self),
[INFO] [stderr]    |                         ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]   --> src/statement.rs:26:30
[INFO] [stderr]    |
[INFO] [stderr] 26 |             Stmt::Expression(expr) => v.visit_expression_stmt(self),
[INFO] [stderr]    |                              ^^^^ help: consider prefixing with an underscore: `_expr`
[INFO] [stderr] 
[INFO] [stderr] warning: function cannot return without recursing
[INFO] [stderr]   --> src/environment.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     pub fn assign(&mut self, name: scanner::Token, value: scanner::Literal) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot return without recursing
[INFO] [stderr] ...
[INFO] [stderr] 52 |                 return env.assign(name.clone(), value.clone());
[INFO] [stderr]    |                        --------------------------------------- recursive call site
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unconditional_recursion)]` on by default
[INFO] [stderr]    = help: a `loop` may express intention better if this is on purpose
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/scanner.rs:277:9
[INFO] [stderr]     |
[INFO] [stderr] 276 |         let value = &self.source[self.start + 1..self.current - 1];
[INFO] [stderr]     |                      ----------- immutable borrow occurs here
[INFO] [stderr] 277 |         self.add_token_with_literal(TokenType::String, Literal::S(value.to_string()));
[INFO] [stderr]     |         ^^^^ mutable borrow occurs here                           ----- immutable borrow later used here
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Printable`
[INFO] [stderr]   --> src/ast_printer.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub enum Printable {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print`
[INFO] [stderr]   --> src/ast_printer.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     pub fn print(&mut self, expr: Expr) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `interpret`
[INFO] [stderr]   --> src/interpreter.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn interpret(&mut self, statements: Vec<Stmt>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/scanner.rs:277:9
[INFO] [stderr]     |
[INFO] [stderr] 276 |         let value = &self.source[self.start + 1..self.current - 1];
[INFO] [stderr]     |                      ----------- immutable borrow occurs here
[INFO] [stderr] 277 |         self.add_token_with_literal(TokenType::String, Literal::S(value.to_string()));
[INFO] [stderr]     |         ^^^^ mutable borrow occurs here                           ----- immutable borrow later used here
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Printable`
[INFO] [stderr]   --> src/ast_printer.rs:21:1
[INFO] [stderr]    |
[INFO] [stderr] 21 | pub enum Printable {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print`
[INFO] [stderr]   --> src/ast_printer.rs:74:5
[INFO] [stderr]    |
[INFO] [stderr] 74 |     pub fn print(&mut self, expr: Expr) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `interpret`
[INFO] [stderr]   --> src/interpreter.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn interpret(&mut self, statements: Vec<Stmt>) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.17s
[INFO] running `"docker" "inspect" "09815cee94f016f1c6875bfc3c232ebfadb46d4eaf3254edbd7cfe82344b045f"`
[INFO] running `"docker" "rm" "-f" "09815cee94f016f1c6875bfc3c232ebfadb46d4eaf3254edbd7cfe82344b045f"`
[INFO] [stdout] 09815cee94f016f1c6875bfc3c232ebfadb46d4eaf3254edbd7cfe82344b045f