[INFO] updating cached repository https://github.com/baoziv587/LoxLang
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c5f72cf61fa1d6b4fc5cc4f69385090c8930202d
[INFO] testing baoziv587/LoxLang against 1.44.0 for beta-1.45-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbaoziv587%2FLoxLang" "/workspace/builds/worker-4/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/baoziv587/LoxLang on toolchain 1.44.0
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/baoziv587/LoxLang
[INFO] finished tweaking git repo https://github.com/baoziv587/LoxLang
[INFO] tweaked toml for git repo https://github.com/baoziv587/LoxLang written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/baoziv587/LoxLang already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "+1.44.0" "build" "--frozen"`
[INFO] [stdout] 897808655b3ff2d16e596511bff72049ba8b720c0e2d87c5a68feef3fba5e3f5
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "897808655b3ff2d16e596511bff72049ba8b720c0e2d87c5a68feef3fba5e3f5"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling env_logger v0.6.1
[INFO] [stderr]    Compiling lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `core`
[INFO] [stderr]  --> src/cli/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use core;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]    --> src/frontend/scanner.rs:260:5
[INFO] [stderr]     |
[INFO] [stderr] 260 | use std::fs::File;
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]    --> src/frontend/scanner.rs:261:5
[INFO] [stderr]     |
[INFO] [stderr] 261 | use std::io::Read;
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/result.rs:73:32
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/result.rs:65:35
[INFO] [stderr]    |
[INFO] [stderr] 65 |             Error::IO(ref e) => e.description(),
[INFO] [stderr]    |                                   ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/result.rs:75:35
[INFO] [stderr]    |
[INFO] [stderr] 75 |             Error::IO(ref e) => e.cause(),
[INFO] [stderr]    |                                   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source`
[INFO] [stderr]   --> src/core/lox.rs:14:12
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn run(source: &str) {}
[INFO] [stderr]    |            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/frontend/scanner.rs:143:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |         let content = self.slice(start, end);
[INFO] [stderr]     |                       ---- immutable borrow occurs here
[INFO] [stderr] 143 |         self.create_token(
[INFO] [stderr]     |         ^^^^ mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 146 |             content.to_string(),
[INFO] [stderr]     |             ------- 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/frontend/scanner.rs:178:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |         let value = self.slice(self.start, self.current);
[INFO] [stderr]     |                     ---- immutable borrow occurs here
[INFO] [stderr] 178 |         self.create_token(
[INFO] [stderr]     |         ^^^^ mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 181 |             value.to_string(),
[INFO] [stderr]     |             ----- immutable borrow later used here
[INFO] [stderr]     |
[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: method is never used: `run`
[INFO] [stderr]   --> src/core/lox.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn run(source: &str) {}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expressions`
[INFO] [stderr]   --> src/frontend/parser.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn expressions(&mut self) -> Result<Expr> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `equality`
[INFO] [stderr]   --> src/frontend/parser.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn equality(&mut self) -> Result<Expr> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `match_type`
[INFO] [stderr]   --> src/frontend/parser.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn match_type(&mut self, types: &Vec<TokenType>) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expect_next`
[INFO] [stderr]   --> src/frontend/parser.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn expect_next(&mut self, types: &Vec<TokenType>) -> Result<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek_error`
[INFO] [stderr]   --> src/frontend/parser.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn peek_error(&mut self) -> Error {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `advance`
[INFO] [stderr]   --> src/frontend/parser.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn advance(&mut self) -> Option<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `previous`
[INFO] [stderr]   --> src/frontend/parser.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     fn previous(&self) -> Option<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `check`
[INFO] [stderr]   --> src/frontend/parser.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     fn check(&self, t: &TokenType) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_at_end`
[INFO] [stderr]   --> src/frontend/parser.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn is_at_end(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek`
[INFO] [stderr]   --> src/frontend/parser.rs:90:5
[INFO] [stderr]    |
[INFO] [stderr] 90 |     fn peek(&self) -> Option<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `comparison`
[INFO] [stderr]   --> src/frontend/parser.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn comparison(&mut self) -> Result<Expr> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `addition`
[INFO] [stderr]    --> src/frontend/parser.rs:113:5
[INFO] [stderr]     |
[INFO] [stderr] 113 |     fn addition(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mutilplication`
[INFO] [stderr]    --> src/frontend/parser.rs:126:5
[INFO] [stderr]     |
[INFO] [stderr] 126 |     fn mutilplication(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unray`
[INFO] [stderr]    --> src/frontend/parser.rs:132:5
[INFO] [stderr]     |
[INFO] [stderr] 132 |     fn unray(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `primary`
[INFO] [stderr]    --> src/frontend/parser.rs:143:5
[INFO] [stderr]     |
[INFO] [stderr] 143 |     fn primary(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unexpected`
[INFO] [stderr]    --> src/frontend/parser.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 |     fn unexpected(&mut self, t: &Token) -> Error {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `eof`
[INFO] [stderr]    --> src/frontend/parser.rs:172:5
[INFO] [stderr]     |
[INFO] [stderr] 172 |     fn eof(&self) -> Error {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `slice`
[INFO] [stderr]   --> src/frontend/scanner.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn slice(&self, start: usize, end: usize) -> &str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_tokens`
[INFO] [stderr]   --> src/frontend/scanner.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn scan_tokens(&mut self) -> Vec<Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_at_end`
[INFO] [stderr]   --> src/frontend/scanner.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn is_at_end(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_token`
[INFO] [stderr]   --> src/frontend/scanner.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn scan_token(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_string`
[INFO] [stderr]    --> src/frontend/scanner.rs:121:5
[INFO] [stderr]     |
[INFO] [stderr] 121 |     fn scan_string(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_comment`
[INFO] [stderr]    --> src/frontend/scanner.rs:151:5
[INFO] [stderr]     |
[INFO] [stderr] 151 |     fn scan_comment(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_new_line`
[INFO] [stderr]    --> src/frontend/scanner.rs:158:5
[INFO] [stderr]     |
[INFO] [stderr] 158 |     fn scan_new_line(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_number`
[INFO] [stderr]    --> src/frontend/scanner.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 |     fn scan_number(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_identifier`
[INFO] [stderr]    --> src/frontend/scanner.rs:186:5
[INFO] [stderr]     |
[INFO] [stderr] 186 |     fn scan_identifier(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `match_str`
[INFO] [stderr]    --> src/frontend/scanner.rs:201:5
[INFO] [stderr]     |
[INFO] [stderr] 201 |     fn match_str(&mut self, expected: &str) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `current_char`
[INFO] [stderr]    --> src/frontend/scanner.rs:210:5
[INFO] [stderr]     |
[INFO] [stderr] 210 |     fn current_char(&mut self) -> &str {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `advance`
[INFO] [stderr]    --> src/frontend/scanner.rs:214:5
[INFO] [stderr]     |
[INFO] [stderr] 214 |     fn advance(&mut self) -> Option<&str> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek`
[INFO] [stderr]    --> src/frontend/scanner.rs:220:5
[INFO] [stderr]     |
[INFO] [stderr] 220 |     fn peek(&mut self, n: Option<usize>) -> Option<&str> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek_next`
[INFO] [stderr]    --> src/frontend/scanner.rs:234:5
[INFO] [stderr]     |
[INFO] [stderr] 234 |     fn peek_next(&mut self) -> Option<&str> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `create_token`
[INFO] [stderr]    --> src/frontend/scanner.rs:238:5
[INFO] [stderr]     |
[INFO] [stderr] 238 |     fn create_token(&mut self, t: TokenType, line: usize, val: String, pos: usize) -> Token {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_token`
[INFO] [stderr]    --> src/frontend/scanner.rs:244:5
[INFO] [stderr]     |
[INFO] [stderr] 244 |     fn add_token(&mut self, tok_type: TokenType) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `LoxKeywords` should have an upper case name
[INFO] [stderr]  --> src/frontend/keywords.rs:5:20
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub static ref LoxKeywords: HashMap<&'static str, TokenType> = {
[INFO] [stderr]   |                    ^^^^^^^^^^^ help: convert the identifier to upper case: `LOX_KEYWORDS`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 45 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Arg`
[INFO] [stderr]  --> src/bin/lox/main.rs:5:12
[INFO] [stderr]   |
[INFO] [stderr] 5 | use clap::{Arg, App, SubCommand};
[INFO] [stderr]   |            ^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `dist`
[INFO] [stderr]  --> src/bin/lox/commands/gen_ast.rs:4:13
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn exec(dist: &str) {
[INFO] [stderr]   |             ^^^^ help: if this is intentional, prefix it with an underscore: `_dist`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `out_dir`
[INFO] [stderr]   --> src/bin/lox/commands/gen_ast.rs:23:15
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn define_ast(out_dir: &str, base_name: &str, ast_types: &Vec<&str>) {
[INFO] [stderr]    |               ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_out_dir`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `base_name`
[INFO] [stderr]   --> src/bin/lox/commands/gen_ast.rs:23:30
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn define_ast(out_dir: &str, base_name: &str, ast_types: &Vec<&str>) {
[INFO] [stderr]    |                              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_base_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ast_types`
[INFO] [stderr]   --> src/bin/lox/commands/gen_ast.rs:23:47
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn define_ast(out_dir: &str, base_name: &str, ast_types: &Vec<&str>) {
[INFO] [stderr]    |                                               ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ast_types`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]   --> src/bin/lox/commands/gen_ast.rs:27:10
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn write(name: &str, content: &str) -> std::io::Result<()> {
[INFO] [stderr]    |          ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `gen_ast`
[INFO] [stderr]   --> src/bin/lox/commands/gen_ast.rs:14:4
[INFO] [stderr]    |
[INFO] [stderr] 14 | fn gen_ast(out_dit: &str) {
[INFO] [stderr]    |    ^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `define_ast`
[INFO] [stderr]   --> src/bin/lox/commands/gen_ast.rs:23:4
[INFO] [stderr]    |
[INFO] [stderr] 23 | fn define_ast(out_dir: &str, base_name: &str, ast_types: &Vec<&str>) {
[INFO] [stderr]    |    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `write`
[INFO] [stderr]   --> src/bin/lox/commands/gen_ast.rs:27:4
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn write(name: &str, content: &str) -> std::io::Result<()> {
[INFO] [stderr]    |    ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 9 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.19s
[INFO] running `"docker" "inspect" "897808655b3ff2d16e596511bff72049ba8b720c0e2d87c5a68feef3fba5e3f5"`
[INFO] running `"docker" "rm" "-f" "897808655b3ff2d16e596511bff72049ba8b720c0e2d87c5a68feef3fba5e3f5"`
[INFO] [stdout] 897808655b3ff2d16e596511bff72049ba8b720c0e2d87c5a68feef3fba5e3f5
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "+1.44.0" "test" "--frozen" "--no-run"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 5bfd8bd6712603506285ad31c1d0c2e487b054a5c86a5bdbcbdd7a149e4607e4
[INFO] running `"docker" "start" "-a" "5bfd8bd6712603506285ad31c1d0c2e487b054a5c86a5bdbcbdd7a149e4607e4"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr] warning: unused import: `core`
[INFO] [stderr]  --> src/cli/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use core;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]    --> src/frontend/scanner.rs:260:5
[INFO] [stderr]     |
[INFO] [stderr] 260 | use std::fs::File;
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]    --> src/frontend/scanner.rs:261:5
[INFO] [stderr]     |
[INFO] [stderr] 261 | use std::io::Read;
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/result.rs:73:32
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/result.rs:65:35
[INFO] [stderr]    |
[INFO] [stderr] 65 |             Error::IO(ref e) => e.description(),
[INFO] [stderr]    |                                   ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/result.rs:75:35
[INFO] [stderr]    |
[INFO] [stderr] 75 |             Error::IO(ref e) => e.cause(),
[INFO] [stderr]    |                                   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source`
[INFO] [stderr]   --> src/core/lox.rs:14:12
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn run(source: &str) {}
[INFO] [stderr]    |            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/frontend/scanner.rs:143:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |         let content = self.slice(start, end);
[INFO] [stderr]     |                       ---- immutable borrow occurs here
[INFO] [stderr] 143 |         self.create_token(
[INFO] [stderr]     |         ^^^^ mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 146 |             content.to_string(),
[INFO] [stderr]     |             ------- 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/frontend/scanner.rs:178:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |         let value = self.slice(self.start, self.current);
[INFO] [stderr]     |                     ---- immutable borrow occurs here
[INFO] [stderr] 178 |         self.create_token(
[INFO] [stderr]     |         ^^^^ mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 181 |             value.to_string(),
[INFO] [stderr]     |             ----- immutable borrow later used here
[INFO] [stderr]     |
[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: method is never used: `run`
[INFO] [stderr]   --> src/core/lox.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn run(source: &str) {}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expressions`
[INFO] [stderr]   --> src/frontend/parser.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn expressions(&mut self) -> Result<Expr> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `equality`
[INFO] [stderr]   --> src/frontend/parser.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn equality(&mut self) -> Result<Expr> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `match_type`
[INFO] [stderr]   --> src/frontend/parser.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn match_type(&mut self, types: &Vec<TokenType>) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expect_next`
[INFO] [stderr]   --> src/frontend/parser.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn expect_next(&mut self, types: &Vec<TokenType>) -> Result<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek_error`
[INFO] [stderr]   --> src/frontend/parser.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn peek_error(&mut self) -> Error {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `advance`
[INFO] [stderr]   --> src/frontend/parser.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn advance(&mut self) -> Option<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `previous`
[INFO] [stderr]   --> src/frontend/parser.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     fn previous(&self) -> Option<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `check`
[INFO] [stderr]   --> src/frontend/parser.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     fn check(&self, t: &TokenType) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_at_end`
[INFO] [stderr]   --> src/frontend/parser.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn is_at_end(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek`
[INFO] [stderr]   --> src/frontend/parser.rs:90:5
[INFO] [stderr]    |
[INFO] [stderr] 90 |     fn peek(&self) -> Option<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `comparison`
[INFO] [stderr]   --> src/frontend/parser.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn comparison(&mut self) -> Result<Expr> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `addition`
[INFO] [stderr]    --> src/frontend/parser.rs:113:5
[INFO] [stderr]     |
[INFO] [stderr] 113 |     fn addition(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mutilplication`
[INFO] [stderr]    --> src/frontend/parser.rs:126:5
[INFO] [stderr]     |
[INFO] [stderr] 126 |     fn mutilplication(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unray`
[INFO] [stderr]    --> src/frontend/parser.rs:132:5
[INFO] [stderr]     |
[INFO] [stderr] 132 |     fn unray(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `primary`
[INFO] [stderr]    --> src/frontend/parser.rs:143:5
[INFO] [stderr]     |
[INFO] [stderr] 143 |     fn primary(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unexpected`
[INFO] [stderr]    --> src/frontend/parser.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 |     fn unexpected(&mut self, t: &Token) -> Error {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `eof`
[INFO] [stderr]    --> src/frontend/parser.rs:172:5
[INFO] [stderr]     |
[INFO] [stderr] 172 |     fn eof(&self) -> Error {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `slice`
[INFO] [stderr]   --> src/frontend/scanner.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn slice(&self, start: usize, end: usize) -> &str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_tokens`
[INFO] [stderr]   --> src/frontend/scanner.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn scan_tokens(&mut self) -> Vec<Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_at_end`
[INFO] [stderr]   --> src/frontend/scanner.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn is_at_end(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_token`
[INFO] [stderr]   --> src/frontend/scanner.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn scan_token(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_string`
[INFO] [stderr]    --> src/frontend/scanner.rs:121:5
[INFO] [stderr]     |
[INFO] [stderr] 121 |     fn scan_string(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_comment`
[INFO] [stderr]    --> src/frontend/scanner.rs:151:5
[INFO] [stderr]     |
[INFO] [stderr] 151 |     fn scan_comment(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_new_line`
[INFO] [stderr]    --> src/frontend/scanner.rs:158:5
[INFO] [stderr]     |
[INFO] [stderr] 158 |     fn scan_new_line(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_number`
[INFO] [stderr]    --> src/frontend/scanner.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 |     fn scan_number(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_identifier`
[INFO] [stderr]    --> src/frontend/scanner.rs:186:5
[INFO] [stderr]     |
[INFO] [stderr] 186 |     fn scan_identifier(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `match_str`
[INFO] [stderr]    --> src/frontend/scanner.rs:201:5
[INFO] [stderr]     |
[INFO] [stderr] 201 |     fn match_str(&mut self, expected: &str) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `current_char`
[INFO] [stderr]    --> src/frontend/scanner.rs:210:5
[INFO] [stderr]     |
[INFO] [stderr] 210 |     fn current_char(&mut self) -> &str {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `advance`
[INFO] [stderr]    --> src/frontend/scanner.rs:214:5
[INFO] [stderr]     |
[INFO] [stderr] 214 |     fn advance(&mut self) -> Option<&str> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek`
[INFO] [stderr]    --> src/frontend/scanner.rs:220:5
[INFO] [stderr]     |
[INFO] [stderr] 220 |     fn peek(&mut self, n: Option<usize>) -> Option<&str> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek_next`
[INFO] [stderr]    --> src/frontend/scanner.rs:234:5
[INFO] [stderr]     |
[INFO] [stderr] 234 |     fn peek_next(&mut self) -> Option<&str> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `create_token`
[INFO] [stderr]    --> src/frontend/scanner.rs:238:5
[INFO] [stderr]     |
[INFO] [stderr] 238 |     fn create_token(&mut self, t: TokenType, line: usize, val: String, pos: usize) -> Token {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_token`
[INFO] [stderr]    --> src/frontend/scanner.rs:244:5
[INFO] [stderr]     |
[INFO] [stderr] 244 |     fn add_token(&mut self, tok_type: TokenType) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `LoxKeywords` should have an upper case name
[INFO] [stderr]  --> src/frontend/keywords.rs:5:20
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub static ref LoxKeywords: HashMap<&'static str, TokenType> = {
[INFO] [stderr]   |                    ^^^^^^^^^^^ help: convert the identifier to upper case: `LOX_KEYWORDS`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 45 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling chrono v0.4.6
[INFO] [stderr]    Compiling pretty_env_logger v0.3.0
[INFO] [stderr]    Compiling lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `core`
[INFO] [stderr]  --> src/cli/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use core;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/result.rs:73:32
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/result.rs:65:35
[INFO] [stderr]    |
[INFO] [stderr] 65 |             Error::IO(ref e) => e.description(),
[INFO] [stderr]    |                                   ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/result.rs:75:35
[INFO] [stderr]    |
[INFO] [stderr] 75 |             Error::IO(ref e) => e.cause(),
[INFO] [stderr]    |                                   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source`
[INFO] [stderr]   --> src/core/lox.rs:14:12
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn run(source: &str) {}
[INFO] [stderr]    |            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/frontend/scanner.rs:143:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |         let content = self.slice(start, end);
[INFO] [stderr]     |                       ---- immutable borrow occurs here
[INFO] [stderr] 143 |         self.create_token(
[INFO] [stderr]     |         ^^^^ mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 146 |             content.to_string(),
[INFO] [stderr]     |             ------- 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/frontend/scanner.rs:178:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |         let value = self.slice(self.start, self.current);
[INFO] [stderr]     |                     ---- immutable borrow occurs here
[INFO] [stderr] 178 |         self.create_token(
[INFO] [stderr]     |         ^^^^ mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 181 |             value.to_string(),
[INFO] [stderr]     |             ----- immutable borrow later used here
[INFO] [stderr]     |
[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: method is never used: `run`
[INFO] [stderr]   --> src/core/lox.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn run(source: &str) {}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expressions`
[INFO] [stderr]   --> src/frontend/parser.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn expressions(&mut self) -> Result<Expr> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `equality`
[INFO] [stderr]   --> src/frontend/parser.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn equality(&mut self) -> Result<Expr> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `match_type`
[INFO] [stderr]   --> src/frontend/parser.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn match_type(&mut self, types: &Vec<TokenType>) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expect_next`
[INFO] [stderr]   --> src/frontend/parser.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn expect_next(&mut self, types: &Vec<TokenType>) -> Result<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek_error`
[INFO] [stderr]   --> src/frontend/parser.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn peek_error(&mut self) -> Error {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `advance`
[INFO] [stderr]   --> src/frontend/parser.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn advance(&mut self) -> Option<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `previous`
[INFO] [stderr]   --> src/frontend/parser.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     fn previous(&self) -> Option<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `check`
[INFO] [stderr]   --> src/frontend/parser.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     fn check(&self, t: &TokenType) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_at_end`
[INFO] [stderr]   --> src/frontend/parser.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn is_at_end(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek`
[INFO] [stderr]   --> src/frontend/parser.rs:90:5
[INFO] [stderr]    |
[INFO] [stderr] 90 |     fn peek(&self) -> Option<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `comparison`
[INFO] [stderr]   --> src/frontend/parser.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn comparison(&mut self) -> Result<Expr> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `addition`
[INFO] [stderr]    --> src/frontend/parser.rs:113:5
[INFO] [stderr]     |
[INFO] [stderr] 113 |     fn addition(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mutilplication`
[INFO] [stderr]    --> src/frontend/parser.rs:126:5
[INFO] [stderr]     |
[INFO] [stderr] 126 |     fn mutilplication(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unray`
[INFO] [stderr]    --> src/frontend/parser.rs:132:5
[INFO] [stderr]     |
[INFO] [stderr] 132 |     fn unray(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `primary`
[INFO] [stderr]    --> src/frontend/parser.rs:143:5
[INFO] [stderr]     |
[INFO] [stderr] 143 |     fn primary(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unexpected`
[INFO] [stderr]    --> src/frontend/parser.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 |     fn unexpected(&mut self, t: &Token) -> Error {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `eof`
[INFO] [stderr]    --> src/frontend/parser.rs:172:5
[INFO] [stderr]     |
[INFO] [stderr] 172 |     fn eof(&self) -> Error {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `LoxKeywords` should have an upper case name
[INFO] [stderr]  --> src/frontend/keywords.rs:5:20
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub static ref LoxKeywords: HashMap<&'static str, TokenType> = {
[INFO] [stderr]   |                    ^^^^^^^^^^^ help: convert the identifier to upper case: `LOX_KEYWORDS`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 26 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 9.49s
[INFO] running `"docker" "inspect" "5bfd8bd6712603506285ad31c1d0c2e487b054a5c86a5bdbcbdd7a149e4607e4"`
[INFO] running `"docker" "rm" "-f" "5bfd8bd6712603506285ad31c1d0c2e487b054a5c86a5bdbcbdd7a149e4607e4"`
[INFO] [stdout] 5bfd8bd6712603506285ad31c1d0c2e487b054a5c86a5bdbcbdd7a149e4607e4
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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" "+1.44.0" "test" "--frozen"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] fcff66b7726a98e4192cefc64e6f832fa3a1c2b2c8d792a0311aa9baa0469a01
[INFO] running `"docker" "start" "-a" "fcff66b7726a98e4192cefc64e6f832fa3a1c2b2c8d792a0311aa9baa0469a01"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr] warning: unused import: `core`
[INFO] [stderr]  --> src/cli/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use core;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]    --> src/frontend/scanner.rs:260:5
[INFO] [stderr]     |
[INFO] [stderr] 260 | use std::fs::File;
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]    --> src/frontend/scanner.rs:261:5
[INFO] [stderr]     |
[INFO] [stderr] 261 | use std::io::Read;
[INFO] [stderr]     |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/result.rs:73:32
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `#[macro_use]` import
[INFO] [stderr]  --> src/lib.rs:9:1
[INFO] [stderr]   |
[INFO] [stderr] 9 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/result.rs:65:35
[INFO] [stderr]    |
[INFO] [stderr] 65 |             Error::IO(ref e) => e.description(),
[INFO] [stderr]    |                                   ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/result.rs:75:35
[INFO] [stderr]    |
[INFO] [stderr] 75 |             Error::IO(ref e) => e.cause(),
[INFO] [stderr]    |                                   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source`
[INFO] [stderr]   --> src/core/lox.rs:14:12
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn run(source: &str) {}
[INFO] [stderr]    |            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/frontend/scanner.rs:143:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |         let content = self.slice(start, end);
[INFO] [stderr]     |                       ---- immutable borrow occurs here
[INFO] [stderr] 143 |         self.create_token(
[INFO] [stderr]     |         ^^^^ mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 146 |             content.to_string(),
[INFO] [stderr]     |             ------- 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/frontend/scanner.rs:178:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |         let value = self.slice(self.start, self.current);
[INFO] [stderr]     |                     ---- immutable borrow occurs here
[INFO] [stderr] 178 |         self.create_token(
[INFO] [stderr]     |         ^^^^ mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 181 |             value.to_string(),
[INFO] [stderr]     |             ----- immutable borrow later used here
[INFO] [stderr]     |
[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: method is never used: `run`
[INFO] [stderr]   --> src/core/lox.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn run(source: &str) {}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expressions`
[INFO] [stderr]   --> src/frontend/parser.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn expressions(&mut self) -> Result<Expr> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `equality`
[INFO] [stderr]   --> src/frontend/parser.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn equality(&mut self) -> Result<Expr> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `match_type`
[INFO] [stderr]   --> src/frontend/parser.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn match_type(&mut self, types: &Vec<TokenType>) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expect_next`
[INFO] [stderr]   --> src/frontend/parser.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn expect_next(&mut self, types: &Vec<TokenType>) -> Result<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek_error`
[INFO] [stderr]   --> src/frontend/parser.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn peek_error(&mut self) -> Error {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `advance`
[INFO] [stderr]   --> src/frontend/parser.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn advance(&mut self) -> Option<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `previous`
[INFO] [stderr]   --> src/frontend/parser.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     fn previous(&self) -> Option<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `check`
[INFO] [stderr]   --> src/frontend/parser.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     fn check(&self, t: &TokenType) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_at_end`
[INFO] [stderr]   --> src/frontend/parser.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn is_at_end(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek`
[INFO] [stderr]   --> src/frontend/parser.rs:90:5
[INFO] [stderr]    |
[INFO] [stderr] 90 |     fn peek(&self) -> Option<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `comparison`
[INFO] [stderr]   --> src/frontend/parser.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn comparison(&mut self) -> Result<Expr> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `addition`
[INFO] [stderr]    --> src/frontend/parser.rs:113:5
[INFO] [stderr]     |
[INFO] [stderr] 113 |     fn addition(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mutilplication`
[INFO] [stderr]    --> src/frontend/parser.rs:126:5
[INFO] [stderr]     |
[INFO] [stderr] 126 |     fn mutilplication(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unray`
[INFO] [stderr]    --> src/frontend/parser.rs:132:5
[INFO] [stderr]     |
[INFO] [stderr] 132 |     fn unray(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `primary`
[INFO] [stderr]    --> src/frontend/parser.rs:143:5
[INFO] [stderr]     |
[INFO] [stderr] 143 |     fn primary(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unexpected`
[INFO] [stderr]    --> src/frontend/parser.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 |     fn unexpected(&mut self, t: &Token) -> Error {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `eof`
[INFO] [stderr]    --> src/frontend/parser.rs:172:5
[INFO] [stderr]     |
[INFO] [stderr] 172 |     fn eof(&self) -> Error {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `slice`
[INFO] [stderr]   --> src/frontend/scanner.rs:38:5
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn slice(&self, start: usize, end: usize) -> &str {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_tokens`
[INFO] [stderr]   --> src/frontend/scanner.rs:42:5
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn scan_tokens(&mut self) -> Vec<Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_at_end`
[INFO] [stderr]   --> src/frontend/scanner.rs:57:5
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn is_at_end(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_token`
[INFO] [stderr]   --> src/frontend/scanner.rs:61:5
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn scan_token(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_string`
[INFO] [stderr]    --> src/frontend/scanner.rs:121:5
[INFO] [stderr]     |
[INFO] [stderr] 121 |     fn scan_string(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_comment`
[INFO] [stderr]    --> src/frontend/scanner.rs:151:5
[INFO] [stderr]     |
[INFO] [stderr] 151 |     fn scan_comment(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_new_line`
[INFO] [stderr]    --> src/frontend/scanner.rs:158:5
[INFO] [stderr]     |
[INFO] [stderr] 158 |     fn scan_new_line(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_number`
[INFO] [stderr]    --> src/frontend/scanner.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 |     fn scan_number(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `scan_identifier`
[INFO] [stderr]    --> src/frontend/scanner.rs:186:5
[INFO] [stderr]     |
[INFO] [stderr] 186 |     fn scan_identifier(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `match_str`
[INFO] [stderr]    --> src/frontend/scanner.rs:201:5
[INFO] [stderr]     |
[INFO] [stderr] 201 |     fn match_str(&mut self, expected: &str) -> bool {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `current_char`
[INFO] [stderr]    --> src/frontend/scanner.rs:210:5
[INFO] [stderr]     |
[INFO] [stderr] 210 |     fn current_char(&mut self) -> &str {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `advance`
[INFO] [stderr]    --> src/frontend/scanner.rs:214:5
[INFO] [stderr]     |
[INFO] [stderr] 214 |     fn advance(&mut self) -> Option<&str> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek`
[INFO] [stderr]    --> src/frontend/scanner.rs:220:5
[INFO] [stderr]     |
[INFO] [stderr] 220 |     fn peek(&mut self, n: Option<usize>) -> Option<&str> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek_next`
[INFO] [stderr]    --> src/frontend/scanner.rs:234:5
[INFO] [stderr]     |
[INFO] [stderr] 234 |     fn peek_next(&mut self) -> Option<&str> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `create_token`
[INFO] [stderr]    --> src/frontend/scanner.rs:238:5
[INFO] [stderr]     |
[INFO] [stderr] 238 |     fn create_token(&mut self, t: TokenType, line: usize, val: String, pos: usize) -> Token {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_token`
[INFO] [stderr]    --> src/frontend/scanner.rs:244:5
[INFO] [stderr]     |
[INFO] [stderr] 244 |     fn add_token(&mut self, tok_type: TokenType) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `LoxKeywords` should have an upper case name
[INFO] [stderr]  --> src/frontend/keywords.rs:5:20
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub static ref LoxKeywords: HashMap<&'static str, TokenType> = {
[INFO] [stderr]   |                    ^^^^^^^^^^^ help: convert the identifier to upper case: `LOX_KEYWORDS`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 45 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `core`
[INFO] [stderr]  --> src/cli/mod.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use core;
[INFO] [stderr]   |     ^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/result.rs:73:32
[INFO] [stderr]    |
[INFO] [stderr] 73 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stderr]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::description': use the Display impl or to_string()
[INFO] [stderr]   --> src/result.rs:65:35
[INFO] [stderr]    |
[INFO] [stderr] 65 |             Error::IO(ref e) => e.description(),
[INFO] [stderr]    |                                   ^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'std::error::Error::cause': replaced by Error::source, which can support downcasting
[INFO] [stderr]   --> src/result.rs:75:35
[INFO] [stderr]    |
[INFO] [stderr] 75 |             Error::IO(ref e) => e.cause(),
[INFO] [stderr]    |                                   ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source`
[INFO] [stderr]   --> src/core/lox.rs:14:12
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn run(source: &str) {}
[INFO] [stderr]    |            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/frontend/scanner.rs:143:9
[INFO] [stderr]     |
[INFO] [stderr] 142 |         let content = self.slice(start, end);
[INFO] [stderr]     |                       ---- immutable borrow occurs here
[INFO] [stderr] 143 |         self.create_token(
[INFO] [stderr]     |         ^^^^ mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 146 |             content.to_string(),
[INFO] [stderr]     |             ------- 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/frontend/scanner.rs:178:9
[INFO] [stderr]     |
[INFO] [stderr] 177 |         let value = self.slice(self.start, self.current);
[INFO] [stderr]     |                     ---- immutable borrow occurs here
[INFO] [stderr] 178 |         self.create_token(
[INFO] [stderr]     |         ^^^^ mutable borrow occurs here
[INFO] [stderr] ...
[INFO] [stderr] 181 |             value.to_string(),
[INFO] [stderr]     |             ----- immutable borrow later used here
[INFO] [stderr]     |
[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: method is never used: `run`
[INFO] [stderr]   --> src/core/lox.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     fn run(source: &str) {}
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expressions`
[INFO] [stderr]   --> src/frontend/parser.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn expressions(&mut self) -> Result<Expr> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `equality`
[INFO] [stderr]   --> src/frontend/parser.rs:21:5
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn equality(&mut self) -> Result<Expr> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `match_type`
[INFO] [stderr]   --> src/frontend/parser.rs:35:5
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn match_type(&mut self, types: &Vec<TokenType>) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expect_next`
[INFO] [stderr]   --> src/frontend/parser.rs:45:5
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn expect_next(&mut self, types: &Vec<TokenType>) -> Result<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek_error`
[INFO] [stderr]   --> src/frontend/parser.rs:53:5
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn peek_error(&mut self) -> Error {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `advance`
[INFO] [stderr]   --> src/frontend/parser.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn advance(&mut self) -> Option<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `previous`
[INFO] [stderr]   --> src/frontend/parser.rs:75:5
[INFO] [stderr]    |
[INFO] [stderr] 75 |     fn previous(&self) -> Option<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `check`
[INFO] [stderr]   --> src/frontend/parser.rs:79:5
[INFO] [stderr]    |
[INFO] [stderr] 79 |     fn check(&self, t: &TokenType) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `is_at_end`
[INFO] [stderr]   --> src/frontend/parser.rs:86:5
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn is_at_end(&self) -> bool {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `peek`
[INFO] [stderr]   --> src/frontend/parser.rs:90:5
[INFO] [stderr]    |
[INFO] [stderr] 90 |     fn peek(&self) -> Option<&Token> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `comparison`
[INFO] [stderr]   --> src/frontend/parser.rs:95:5
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn comparison(&mut self) -> Result<Expr> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `addition`
[INFO] [stderr]    --> src/frontend/parser.rs:113:5
[INFO] [stderr]     |
[INFO] [stderr] 113 |     fn addition(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `mutilplication`
[INFO] [stderr]    --> src/frontend/parser.rs:126:5
[INFO] [stderr]     |
[INFO] [stderr] 126 |     fn mutilplication(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unray`
[INFO] [stderr]    --> src/frontend/parser.rs:132:5
[INFO] [stderr]     |
[INFO] [stderr] 132 |     fn unray(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `primary`
[INFO] [stderr]    --> src/frontend/parser.rs:143:5
[INFO] [stderr]     |
[INFO] [stderr] 143 |     fn primary(&mut self) -> Result<Expr> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `unexpected`
[INFO] [stderr]    --> src/frontend/parser.rs:163:5
[INFO] [stderr]     |
[INFO] [stderr] 163 |     fn unexpected(&mut self, t: &Token) -> Error {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `eof`
[INFO] [stderr]    --> src/frontend/parser.rs:172:5
[INFO] [stderr]     |
[INFO] [stderr] 172 |     fn eof(&self) -> Error {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: static variable `LoxKeywords` should have an upper case name
[INFO] [stderr]  --> src/frontend/keywords.rs:5:20
[INFO] [stderr]   |
[INFO] [stderr] 5 |     pub static ref LoxKeywords: HashMap<&'static str, TokenType> = {
[INFO] [stderr]   |                    ^^^^^^^^^^^ help: convert the identifier to upper case: `LOX_KEYWORDS`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: 26 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.22s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lox-069a3e043def9809
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test frontend::scanner::test_advance ... ok
[INFO] [stdout] test frontend::scanner::test_scan_tokens ... ok
[INFO] [stdout] test frontend::token::tests::test_token ... ok
[INFO] [stdout] test frontend::scanner::test_scan_number ... ok
[INFO] [stdout] test frontend::scanner::test_scan_identifier ... ok
[INFO] [stderr]    Doc-tests lox
[INFO] [stdout] test frontend::token::tests::test_token_to_string ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 6 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "fcff66b7726a98e4192cefc64e6f832fa3a1c2b2c8d792a0311aa9baa0469a01"`
[INFO] running `"docker" "rm" "-f" "fcff66b7726a98e4192cefc64e6f832fa3a1c2b2c8d792a0311aa9baa0469a01"`
[INFO] [stdout] fcff66b7726a98e4192cefc64e6f832fa3a1c2b2c8d792a0311aa9baa0469a01