[INFO] cloning repository https://github.com/baoziv587/LoxLang
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/baoziv587/LoxLang" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbaoziv587%2FLoxLang", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbaoziv587%2FLoxLang'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c5f72cf61fa1d6b4fc5cc4f69385090c8930202d
[INFO] testing baoziv587/LoxLang against beta-2020-10-09 for beta-1.48-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbaoziv587%2FLoxLang" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[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 beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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 `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded pretty_env_logger v0.3.0
[INFO] running `Command { std: "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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4ec9ee82e2efc68d00c94c6b1c75e2ec849b02ea824829715b8abf021fc173e0
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "4ec9ee82e2efc68d00c94c6b1c75e2ec849b02ea824829715b8abf021fc173e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4ec9ee82e2efc68d00c94c6b1c75e2ec849b02ea824829715b8abf021fc173e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4ec9ee82e2efc68d00c94c6b1c75e2ec849b02ea824829715b8abf021fc173e0", kill_on_drop: false }`
[INFO] [stdout] 4ec9ee82e2efc68d00c94c6b1c75e2ec849b02ea824829715b8abf021fc173e0
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d3e2bfe3cb53b1c887f05ffb6d5eca5375a8e882495a93b9b16ec3c782ee3e80
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d3e2bfe3cb53b1c887f05ffb6d5eca5375a8e882495a93b9b16ec3c782ee3e80", kill_on_drop: false }`
[INFO] [stderr]    Compiling lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core`
[INFO] [stdout]  --> src/cli/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]    --> src/frontend/scanner.rs:260:5
[INFO] [stdout]     |
[INFO] [stdout] 260 | use std::fs::File;
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]    --> src/frontend/scanner.rs:261:5
[INFO] [stdout]     |
[INFO] [stdout] 261 | use std::io::Read;
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/result.rs:73:32
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/result.rs:65:35
[INFO] [stdout]    |
[INFO] [stdout] 65 |             Error::IO(ref e) => e.description(),
[INFO] [stdout]    |                                   ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/result.rs:75:35
[INFO] [stdout]    |
[INFO] [stdout] 75 |             Error::IO(ref e) => e.cause(),
[INFO] [stdout]    |                                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]   --> src/core/lox.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn run(source: &str) {}
[INFO] [stdout]    |            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/frontend/scanner.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let content = self.slice(start, end);
[INFO] [stdout]     |                       ---- immutable borrow occurs here
[INFO] [stdout] 143 |         self.create_token(
[INFO] [stdout]     |         ^^^^ mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 146 |             content.to_string(),
[INFO] [stdout]     |             ------- immutable borrow later used here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/frontend/scanner.rs:178:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |         let value = self.slice(self.start, self.current);
[INFO] [stdout]     |                     ---- immutable borrow occurs here
[INFO] [stdout] 178 |         self.create_token(
[INFO] [stdout]     |         ^^^^ mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 181 |             value.to_string(),
[INFO] [stdout]     |             ----- immutable borrow later used here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `run`
[INFO] [stdout]   --> src/core/lox.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn run(source: &str) {}
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expressions`
[INFO] [stdout]   --> src/frontend/parser.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn expressions(&mut self) -> Result<Expr> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `equality`
[INFO] [stdout]   --> src/frontend/parser.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn equality(&mut self) -> Result<Expr> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_type`
[INFO] [stdout]   --> src/frontend/parser.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn match_type(&mut self, types: &Vec<TokenType>) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expect_next`
[INFO] [stdout]   --> src/frontend/parser.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn expect_next(&mut self, types: &Vec<TokenType>) -> Result<&Token> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_error`
[INFO] [stdout]   --> src/frontend/parser.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn peek_error(&mut self) -> Error {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `advance`
[INFO] [stdout]   --> src/frontend/parser.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn advance(&mut self) -> Option<&Token> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `previous`
[INFO] [stdout]   --> src/frontend/parser.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn previous(&self) -> Option<&Token> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `check`
[INFO] [stdout]   --> src/frontend/parser.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn check(&self, t: &TokenType) -> bool {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_at_end`
[INFO] [stdout]   --> src/frontend/parser.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn is_at_end(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek`
[INFO] [stdout]   --> src/frontend/parser.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn peek(&self) -> Option<&Token> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `comparison`
[INFO] [stdout]   --> src/frontend/parser.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn comparison(&mut self) -> Result<Expr> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `addition`
[INFO] [stdout]    --> src/frontend/parser.rs:113:8
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn addition(&mut self) -> Result<Expr> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mutilplication`
[INFO] [stdout]    --> src/frontend/parser.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn mutilplication(&mut self) -> Result<Expr> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unray`
[INFO] [stdout]    --> src/frontend/parser.rs:132:8
[INFO] [stdout]     |
[INFO] [stdout] 132 |     fn unray(&mut self) -> Result<Expr> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `primary`
[INFO] [stdout]    --> src/frontend/parser.rs:143:8
[INFO] [stdout]     |
[INFO] [stdout] 143 |     fn primary(&mut self) -> Result<Expr> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unexpected`
[INFO] [stdout]    --> src/frontend/parser.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn unexpected(&mut self, t: &Token) -> Error {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `eof`
[INFO] [stdout]    --> src/frontend/parser.rs:172:8
[INFO] [stdout]     |
[INFO] [stdout] 172 |     fn eof(&self) -> Error {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `slice`
[INFO] [stdout]   --> src/frontend/scanner.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn slice(&self, start: usize, end: usize) -> &str {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan_tokens`
[INFO] [stdout]   --> src/frontend/scanner.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn scan_tokens(&mut self) -> Vec<Token> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_at_end`
[INFO] [stdout]   --> src/frontend/scanner.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn is_at_end(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan_token`
[INFO] [stdout]   --> src/frontend/scanner.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn scan_token(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan_string`
[INFO] [stdout]    --> src/frontend/scanner.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn scan_string(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan_comment`
[INFO] [stdout]    --> src/frontend/scanner.rs:151:8
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn scan_comment(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan_new_line`
[INFO] [stdout]    --> src/frontend/scanner.rs:158:8
[INFO] [stdout]     |
[INFO] [stdout] 158 |     fn scan_new_line(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan_number`
[INFO] [stdout]    --> src/frontend/scanner.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn scan_number(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan_identifier`
[INFO] [stdout]    --> src/frontend/scanner.rs:186:8
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn scan_identifier(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_str`
[INFO] [stdout]    --> src/frontend/scanner.rs:201:8
[INFO] [stdout]     |
[INFO] [stdout] 201 |     fn match_str(&mut self, expected: &str) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `current_char`
[INFO] [stdout]    --> src/frontend/scanner.rs:210:8
[INFO] [stdout]     |
[INFO] [stdout] 210 |     fn current_char(&mut self) -> &str {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `advance`
[INFO] [stdout]    --> src/frontend/scanner.rs:214:8
[INFO] [stdout]     |
[INFO] [stdout] 214 |     fn advance(&mut self) -> Option<&str> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek`
[INFO] [stdout]    --> src/frontend/scanner.rs:220:8
[INFO] [stdout]     |
[INFO] [stdout] 220 |     fn peek(&mut self, n: Option<usize>) -> Option<&str> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_next`
[INFO] [stdout]    --> src/frontend/scanner.rs:234:8
[INFO] [stdout]     |
[INFO] [stdout] 234 |     fn peek_next(&mut self) -> Option<&str> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create_token`
[INFO] [stdout]    --> src/frontend/scanner.rs:238:8
[INFO] [stdout]     |
[INFO] [stdout] 238 |     fn create_token(&mut self, t: TokenType, line: usize, val: String, pos: usize) -> Token {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_token`
[INFO] [stdout]    --> src/frontend/scanner.rs:244:8
[INFO] [stdout]     |
[INFO] [stdout] 244 |     fn add_token(&mut self, tok_type: TokenType) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `LoxKeywords` should have an upper case name
[INFO] [stdout]  --> src/frontend/keywords.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub static ref LoxKeywords: HashMap<&'static str, TokenType> = {
[INFO] [stdout]   |                    ^^^^^^^^^^^ help: convert the identifier to upper case: `LOX_KEYWORDS`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 45 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Arg`
[INFO] [stdout]  --> src/bin/lox/main.rs:5:12
[INFO] [stdout]   |
[INFO] [stdout] 5 | use clap::{Arg, App, SubCommand};
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `dist`
[INFO] [stdout]  --> src/bin/lox/commands/gen_ast.rs:4:13
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub fn exec(dist: &str) {
[INFO] [stdout]   |             ^^^^ help: if this is intentional, prefix it with an underscore: `_dist`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `out_dir`
[INFO] [stdout]   --> src/bin/lox/commands/gen_ast.rs:23:15
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn define_ast(out_dir: &str, base_name: &str, ast_types: &Vec<&str>) {
[INFO] [stdout]    |               ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_out_dir`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `base_name`
[INFO] [stdout]   --> src/bin/lox/commands/gen_ast.rs:23:30
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn define_ast(out_dir: &str, base_name: &str, ast_types: &Vec<&str>) {
[INFO] [stdout]    |                              ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_base_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ast_types`
[INFO] [stdout]   --> src/bin/lox/commands/gen_ast.rs:23:47
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn define_ast(out_dir: &str, base_name: &str, ast_types: &Vec<&str>) {
[INFO] [stdout]    |                                               ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_ast_types`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]   --> src/bin/lox/commands/gen_ast.rs:27:10
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn write(name: &str, content: &str) -> std::io::Result<()> {
[INFO] [stdout]    |          ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `gen_ast`
[INFO] [stdout]   --> src/bin/lox/commands/gen_ast.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn gen_ast(out_dit: &str) {
[INFO] [stdout]    |    ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `define_ast`
[INFO] [stdout]   --> src/bin/lox/commands/gen_ast.rs:23:4
[INFO] [stdout]    |
[INFO] [stdout] 23 | fn define_ast(out_dir: &str, base_name: &str, ast_types: &Vec<&str>) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `write`
[INFO] [stdout]   --> src/bin/lox/commands/gen_ast.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn write(name: &str, content: &str) -> std::io::Result<()> {
[INFO] [stdout]    |    ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 9 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.99s
[INFO] running `Command { std: "docker" "inspect" "d3e2bfe3cb53b1c887f05ffb6d5eca5375a8e882495a93b9b16ec3c782ee3e80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d3e2bfe3cb53b1c887f05ffb6d5eca5375a8e882495a93b9b16ec3c782ee3e80", kill_on_drop: false }`
[INFO] [stdout] d3e2bfe3cb53b1c887f05ffb6d5eca5375a8e882495a93b9b16ec3c782ee3e80
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 16ced877aef74e62c25c4db933c5a9c79732a963252ec5ada9c6dde5afd7ecd7
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "16ced877aef74e62c25c4db933c5a9c79732a963252ec5ada9c6dde5afd7ecd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling pretty_env_logger v0.3.0
[INFO] [stdout] warning: unused import: `core`
[INFO] [stdout]  --> src/cli/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fs::File`
[INFO] [stdout]    --> src/frontend/scanner.rs:260:5
[INFO] [stdout]     |
[INFO] [stdout] 260 | use std::fs::File;
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::io::Read`
[INFO] [stdout]    --> src/frontend/scanner.rs:261:5
[INFO] [stdout]     |
[INFO] [stdout] 261 | use std::io::Read;
[INFO] [stdout]     |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/result.rs:73:32
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `#[macro_use]` import
[INFO] [stdout]  --> src/lib.rs:9:1
[INFO] [stdout]   |
[INFO] [stdout] 9 | #[macro_use]
[INFO] [stdout]   | ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/result.rs:65:35
[INFO] [stdout]    |
[INFO] [stdout] 65 |             Error::IO(ref e) => e.description(),
[INFO] [stdout]    |                                   ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/result.rs:75:35
[INFO] [stdout]    |
[INFO] [stdout] 75 |             Error::IO(ref e) => e.cause(),
[INFO] [stdout]    |                                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]   --> src/core/lox.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn run(source: &str) {}
[INFO] [stdout]    |            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/frontend/scanner.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let content = self.slice(start, end);
[INFO] [stdout]     |                       ---- immutable borrow occurs here
[INFO] [stdout] 143 |         self.create_token(
[INFO] [stdout]     |         ^^^^ mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 146 |             content.to_string(),
[INFO] [stdout]     |             ------- immutable borrow later used here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/frontend/scanner.rs:178:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |         let value = self.slice(self.start, self.current);
[INFO] [stdout]     |                     ---- immutable borrow occurs here
[INFO] [stdout] 178 |         self.create_token(
[INFO] [stdout]     |         ^^^^ mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 181 |             value.to_string(),
[INFO] [stdout]     |             ----- immutable borrow later used here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `run`
[INFO] [stdout]   --> src/core/lox.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn run(source: &str) {}
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expressions`
[INFO] [stdout]   --> src/frontend/parser.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn expressions(&mut self) -> Result<Expr> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `equality`
[INFO] [stdout]   --> src/frontend/parser.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn equality(&mut self) -> Result<Expr> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_type`
[INFO] [stdout]   --> src/frontend/parser.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn match_type(&mut self, types: &Vec<TokenType>) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expect_next`
[INFO] [stdout]   --> src/frontend/parser.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn expect_next(&mut self, types: &Vec<TokenType>) -> Result<&Token> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_error`
[INFO] [stdout]   --> src/frontend/parser.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn peek_error(&mut self) -> Error {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `advance`
[INFO] [stdout]   --> src/frontend/parser.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn advance(&mut self) -> Option<&Token> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `previous`
[INFO] [stdout]   --> src/frontend/parser.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn previous(&self) -> Option<&Token> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `check`
[INFO] [stdout]   --> src/frontend/parser.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn check(&self, t: &TokenType) -> bool {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_at_end`
[INFO] [stdout]   --> src/frontend/parser.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn is_at_end(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek`
[INFO] [stdout]   --> src/frontend/parser.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn peek(&self) -> Option<&Token> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `comparison`
[INFO] [stdout]   --> src/frontend/parser.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn comparison(&mut self) -> Result<Expr> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `addition`
[INFO] [stdout]    --> src/frontend/parser.rs:113:8
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn addition(&mut self) -> Result<Expr> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mutilplication`
[INFO] [stdout]    --> src/frontend/parser.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn mutilplication(&mut self) -> Result<Expr> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unray`
[INFO] [stdout]    --> src/frontend/parser.rs:132:8
[INFO] [stdout]     |
[INFO] [stdout] 132 |     fn unray(&mut self) -> Result<Expr> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `primary`
[INFO] [stdout]    --> src/frontend/parser.rs:143:8
[INFO] [stdout]     |
[INFO] [stdout] 143 |     fn primary(&mut self) -> Result<Expr> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unexpected`
[INFO] [stdout]    --> src/frontend/parser.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn unexpected(&mut self, t: &Token) -> Error {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `eof`
[INFO] [stdout]    --> src/frontend/parser.rs:172:8
[INFO] [stdout]     |
[INFO] [stdout] 172 |     fn eof(&self) -> Error {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `slice`
[INFO] [stdout]   --> src/frontend/scanner.rs:38:8
[INFO] [stdout]    |
[INFO] [stdout] 38 |     fn slice(&self, start: usize, end: usize) -> &str {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan_tokens`
[INFO] [stdout]   --> src/frontend/scanner.rs:42:8
[INFO] [stdout]    |
[INFO] [stdout] 42 |     fn scan_tokens(&mut self) -> Vec<Token> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_at_end`
[INFO] [stdout]   --> src/frontend/scanner.rs:57:8
[INFO] [stdout]    |
[INFO] [stdout] 57 |     fn is_at_end(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan_token`
[INFO] [stdout]   --> src/frontend/scanner.rs:61:8
[INFO] [stdout]    |
[INFO] [stdout] 61 |     fn scan_token(&mut self) {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan_string`
[INFO] [stdout]    --> src/frontend/scanner.rs:121:8
[INFO] [stdout]     |
[INFO] [stdout] 121 |     fn scan_string(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan_comment`
[INFO] [stdout]    --> src/frontend/scanner.rs:151:8
[INFO] [stdout]     |
[INFO] [stdout] 151 |     fn scan_comment(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan_new_line`
[INFO] [stdout]    --> src/frontend/scanner.rs:158:8
[INFO] [stdout]     |
[INFO] [stdout] 158 |     fn scan_new_line(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan_number`
[INFO] [stdout]    --> src/frontend/scanner.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn scan_number(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `scan_identifier`
[INFO] [stdout]    --> src/frontend/scanner.rs:186:8
[INFO] [stdout]     |
[INFO] [stdout] 186 |     fn scan_identifier(&mut self) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_str`
[INFO] [stdout]    --> src/frontend/scanner.rs:201:8
[INFO] [stdout]     |
[INFO] [stdout] 201 |     fn match_str(&mut self, expected: &str) -> bool {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `current_char`
[INFO] [stdout]    --> src/frontend/scanner.rs:210:8
[INFO] [stdout]     |
[INFO] [stdout] 210 |     fn current_char(&mut self) -> &str {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `advance`
[INFO] [stdout]    --> src/frontend/scanner.rs:214:8
[INFO] [stdout]     |
[INFO] [stdout] 214 |     fn advance(&mut self) -> Option<&str> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek`
[INFO] [stdout]    --> src/frontend/scanner.rs:220:8
[INFO] [stdout]     |
[INFO] [stdout] 220 |     fn peek(&mut self, n: Option<usize>) -> Option<&str> {
[INFO] [stdout]     |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_next`
[INFO] [stdout]    --> src/frontend/scanner.rs:234:8
[INFO] [stdout]     |
[INFO] [stdout] 234 |     fn peek_next(&mut self) -> Option<&str> {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `create_token`
[INFO] [stdout]    --> src/frontend/scanner.rs:238:8
[INFO] [stdout]     |
[INFO] [stdout] 238 |     fn create_token(&mut self, t: TokenType, line: usize, val: String, pos: usize) -> Token {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `add_token`
[INFO] [stdout]    --> src/frontend/scanner.rs:244:8
[INFO] [stdout]     |
[INFO] [stdout] 244 |     fn add_token(&mut self, tok_type: TokenType) {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `LoxKeywords` should have an upper case name
[INFO] [stdout]  --> src/frontend/keywords.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub static ref LoxKeywords: HashMap<&'static str, TokenType> = {
[INFO] [stdout]   |                    ^^^^^^^^^^^ help: convert the identifier to upper case: `LOX_KEYWORDS`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 45 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `core`
[INFO] [stdout]  --> src/cli/mod.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use core;
[INFO] [stdout]   |     ^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/result.rs:73:32
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn cause(&self) -> Option<&error::Error> {
[INFO] [stdout]    |                                ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::description`: use the Display impl or to_string()
[INFO] [stdout]   --> src/result.rs:65:35
[INFO] [stdout]    |
[INFO] [stdout] 65 |             Error::IO(ref e) => e.description(),
[INFO] [stdout]    |                                   ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated associated function `std::error::Error::cause`: replaced by Error::source, which can support downcasting
[INFO] [stdout]   --> src/result.rs:75:35
[INFO] [stdout]    |
[INFO] [stdout] 75 |             Error::IO(ref e) => e.cause(),
[INFO] [stdout]    |                                   ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `source`
[INFO] [stdout]   --> src/core/lox.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn run(source: &str) {}
[INFO] [stdout]    |            ^^^^^^ help: if this is intentional, prefix it with an underscore: `_source`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/frontend/scanner.rs:143:9
[INFO] [stdout]     |
[INFO] [stdout] 142 |         let content = self.slice(start, end);
[INFO] [stdout]     |                       ---- immutable borrow occurs here
[INFO] [stdout] 143 |         self.create_token(
[INFO] [stdout]     |         ^^^^ mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 146 |             content.to_string(),
[INFO] [stdout]     |             ------- immutable borrow later used here
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: cannot borrow `*self` as mutable because it is also borrowed as immutable
[INFO] [stdout]    --> src/frontend/scanner.rs:178:9
[INFO] [stdout]     |
[INFO] [stdout] 177 |         let value = self.slice(self.start, self.current);
[INFO] [stdout]     |                     ---- immutable borrow occurs here
[INFO] [stdout] 178 |         self.create_token(
[INFO] [stdout]     |         ^^^^ mutable borrow occurs here
[INFO] [stdout] ...
[INFO] [stdout] 181 |             value.to_string(),
[INFO] [stdout]     |             ----- immutable borrow later used here
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stdout]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `run`
[INFO] [stdout]   --> src/core/lox.rs:14:8
[INFO] [stdout]    |
[INFO] [stdout] 14 |     fn run(source: &str) {}
[INFO] [stdout]    |        ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expressions`
[INFO] [stdout]   --> src/frontend/parser.rs:16:8
[INFO] [stdout]    |
[INFO] [stdout] 16 |     fn expressions(&mut self) -> Result<Expr> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `equality`
[INFO] [stdout]   --> src/frontend/parser.rs:21:8
[INFO] [stdout]    |
[INFO] [stdout] 21 |     fn equality(&mut self) -> Result<Expr> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `match_type`
[INFO] [stdout]   --> src/frontend/parser.rs:35:8
[INFO] [stdout]    |
[INFO] [stdout] 35 |     fn match_type(&mut self, types: &Vec<TokenType>) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expect_next`
[INFO] [stdout]   --> src/frontend/parser.rs:45:8
[INFO] [stdout]    |
[INFO] [stdout] 45 |     fn expect_next(&mut self, types: &Vec<TokenType>) -> Result<&Token> {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek_error`
[INFO] [stdout]   --> src/frontend/parser.rs:53:8
[INFO] [stdout]    |
[INFO] [stdout] 53 |     fn peek_error(&mut self) -> Error {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `advance`
[INFO] [stdout]   --> src/frontend/parser.rs:67:8
[INFO] [stdout]    |
[INFO] [stdout] 67 |     fn advance(&mut self) -> Option<&Token> {
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `previous`
[INFO] [stdout]   --> src/frontend/parser.rs:75:8
[INFO] [stdout]    |
[INFO] [stdout] 75 |     fn previous(&self) -> Option<&Token> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `check`
[INFO] [stdout]   --> src/frontend/parser.rs:79:8
[INFO] [stdout]    |
[INFO] [stdout] 79 |     fn check(&self, t: &TokenType) -> bool {
[INFO] [stdout]    |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `is_at_end`
[INFO] [stdout]   --> src/frontend/parser.rs:86:8
[INFO] [stdout]    |
[INFO] [stdout] 86 |     fn is_at_end(&self) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `peek`
[INFO] [stdout]   --> src/frontend/parser.rs:90:8
[INFO] [stdout]    |
[INFO] [stdout] 90 |     fn peek(&self) -> Option<&Token> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `comparison`
[INFO] [stdout]   --> src/frontend/parser.rs:95:8
[INFO] [stdout]    |
[INFO] [stdout] 95 |     fn comparison(&mut self) -> Result<Expr> {
[INFO] [stdout]    |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `addition`
[INFO] [stdout]    --> src/frontend/parser.rs:113:8
[INFO] [stdout]     |
[INFO] [stdout] 113 |     fn addition(&mut self) -> Result<Expr> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `mutilplication`
[INFO] [stdout]    --> src/frontend/parser.rs:126:8
[INFO] [stdout]     |
[INFO] [stdout] 126 |     fn mutilplication(&mut self) -> Result<Expr> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unray`
[INFO] [stdout]    --> src/frontend/parser.rs:132:8
[INFO] [stdout]     |
[INFO] [stdout] 132 |     fn unray(&mut self) -> Result<Expr> {
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `primary`
[INFO] [stdout]    --> src/frontend/parser.rs:143:8
[INFO] [stdout]     |
[INFO] [stdout] 143 |     fn primary(&mut self) -> Result<Expr> {
[INFO] [stdout]     |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `unexpected`
[INFO] [stdout]    --> src/frontend/parser.rs:163:8
[INFO] [stdout]     |
[INFO] [stdout] 163 |     fn unexpected(&mut self, t: &Token) -> Error {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `eof`
[INFO] [stdout]    --> src/frontend/parser.rs:172:8
[INFO] [stdout]     |
[INFO] [stdout] 172 |     fn eof(&self) -> Error {
[INFO] [stdout]     |        ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: static variable `LoxKeywords` should have an upper case name
[INFO] [stdout]  --> src/frontend/keywords.rs:5:20
[INFO] [stdout]   |
[INFO] [stdout] 5 |     pub static ref LoxKeywords: HashMap<&'static str, TokenType> = {
[INFO] [stdout]   |                    ^^^^^^^^^^^ help: convert the identifier to upper case: `LOX_KEYWORDS`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(non_upper_case_globals)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 26 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.44s
[INFO] running `Command { std: "docker" "inspect" "16ced877aef74e62c25c4db933c5a9c79732a963252ec5ada9c6dde5afd7ecd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "16ced877aef74e62c25c4db933c5a9c79732a963252ec5ada9c6dde5afd7ecd7", kill_on_drop: false }`
[INFO] [stdout] 16ced877aef74e62c25c4db933c5a9c79732a963252ec5ada9c6dde5afd7ecd7
[INFO] running `Command { std: "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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] bacf6445ddb6869d527041091b44313e9de70e5a182d4cf828353a65b477af6c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "bacf6445ddb6869d527041091b44313e9de70e5a182d4cf828353a65b477af6c", kill_on_drop: false }`
[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 associated function `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 associated function `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: associated function is never used: `run`
[INFO] [stderr]   --> src/core/lox.rs:14:8
[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: associated function is never used: `expressions`
[INFO] [stderr]   --> src/frontend/parser.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn expressions(&mut self) -> Result<Expr> {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `equality`
[INFO] [stderr]   --> src/frontend/parser.rs:21:8
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn equality(&mut self) -> Result<Expr> {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `match_type`
[INFO] [stderr]   --> src/frontend/parser.rs:35:8
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn match_type(&mut self, types: &Vec<TokenType>) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `expect_next`
[INFO] [stderr]   --> src/frontend/parser.rs:45:8
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn expect_next(&mut self, types: &Vec<TokenType>) -> Result<&Token> {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek_error`
[INFO] [stderr]   --> src/frontend/parser.rs:53:8
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn peek_error(&mut self) -> Error {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `advance`
[INFO] [stderr]   --> src/frontend/parser.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn advance(&mut self) -> Option<&Token> {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `previous`
[INFO] [stderr]   --> src/frontend/parser.rs:75:8
[INFO] [stderr]    |
[INFO] [stderr] 75 |     fn previous(&self) -> Option<&Token> {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `check`
[INFO] [stderr]   --> src/frontend/parser.rs:79:8
[INFO] [stderr]    |
[INFO] [stderr] 79 |     fn check(&self, t: &TokenType) -> bool {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_at_end`
[INFO] [stderr]   --> src/frontend/parser.rs:86:8
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn is_at_end(&self) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek`
[INFO] [stderr]   --> src/frontend/parser.rs:90:8
[INFO] [stderr]    |
[INFO] [stderr] 90 |     fn peek(&self) -> Option<&Token> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `comparison`
[INFO] [stderr]   --> src/frontend/parser.rs:95:8
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn comparison(&mut self) -> Result<Expr> {
[INFO] [stderr]    |        ^^^^^^^^^^
[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: 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 associated function `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 associated function `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: associated function is never used: `addition`
[INFO] [stderr]    --> src/frontend/parser.rs:113:8
[INFO] [stderr]     |
[INFO] [stderr] 113 |     fn addition(&mut self) -> Result<Expr> {
[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: associated function is never used: `mutilplication`
[INFO] [stderr]    --> src/frontend/parser.rs:126:8
[INFO] [stderr]     |
[INFO] [stderr] 126 |     fn mutilplication(&mut self) -> Result<Expr> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unray`
[INFO] [stderr]    --> src/frontend/parser.rs:132:8
[INFO] [stderr]     |
[INFO] [stderr] 132 |     fn unray(&mut self) -> Result<Expr> {
[INFO] [stderr]     |        ^^^^^
[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: associated function is never used: `primary`
[INFO] [stderr]    --> src/frontend/parser.rs:143:8
[INFO] [stderr]     |
[INFO] [stderr] 143 |     fn primary(&mut self) -> Result<Expr> {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unexpected`
[INFO] [stderr]    --> src/frontend/parser.rs:163:8
[INFO] [stderr]     |
[INFO] [stderr] 163 |     fn unexpected(&mut self, t: &Token) -> Error {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `eof`
[INFO] [stderr]    --> src/frontend/parser.rs:172:8
[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] 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: associated function is never used: `run`
[INFO] [stderr]   --> src/core/lox.rs:14:8
[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: associated function is never used: `expressions`
[INFO] [stderr]   --> src/frontend/parser.rs:16:8
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn expressions(&mut self) -> Result<Expr> {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `equality`
[INFO] [stderr]   --> src/frontend/parser.rs:21:8
[INFO] [stderr]    |
[INFO] [stderr] 21 |     fn equality(&mut self) -> Result<Expr> {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `match_type`
[INFO] [stderr]   --> src/frontend/parser.rs:35:8
[INFO] [stderr]    |
[INFO] [stderr] 35 |     fn match_type(&mut self, types: &Vec<TokenType>) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `expect_next`
[INFO] [stderr]   --> src/frontend/parser.rs:45:8
[INFO] [stderr]    |
[INFO] [stderr] 45 |     fn expect_next(&mut self, types: &Vec<TokenType>) -> Result<&Token> {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek_error`
[INFO] [stderr]   --> src/frontend/parser.rs:53:8
[INFO] [stderr]    |
[INFO] [stderr] 53 |     fn peek_error(&mut self) -> Error {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `advance`
[INFO] [stderr]   --> src/frontend/parser.rs:67:8
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn advance(&mut self) -> Option<&Token> {
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `previous`
[INFO] [stderr]   --> src/frontend/parser.rs:75:8
[INFO] [stderr]    |
[INFO] [stderr] 75 |     fn previous(&self) -> Option<&Token> {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `check`
[INFO] [stderr]   --> src/frontend/parser.rs:79:8
[INFO] [stderr]    |
[INFO] [stderr] 79 |     fn check(&self, t: &TokenType) -> bool {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_at_end`
[INFO] [stderr]   --> src/frontend/parser.rs:86:8
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn is_at_end(&self) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek`
[INFO] [stderr]   --> src/frontend/parser.rs:90:8
[INFO] [stderr]    |
[INFO] [stderr] 90 |     fn peek(&self) -> Option<&Token> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `comparison`
[INFO] [stderr]   --> src/frontend/parser.rs:95:8
[INFO] [stderr]    |
[INFO] [stderr] 95 |     fn comparison(&mut self) -> Result<Expr> {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `addition`
[INFO] [stderr]    --> src/frontend/parser.rs:113:8
[INFO] [stderr]     |
[INFO] [stderr] 113 |     fn addition(&mut self) -> Result<Expr> {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `mutilplication`
[INFO] [stderr]    --> src/frontend/parser.rs:126:8
[INFO] [stderr]     |
[INFO] [stderr] 126 |     fn mutilplication(&mut self) -> Result<Expr> {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unray`
[INFO] [stderr]    --> src/frontend/parser.rs:132:8
[INFO] [stderr]     |
[INFO] [stderr] 132 |     fn unray(&mut self) -> Result<Expr> {
[INFO] [stderr]     |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `primary`
[INFO] [stderr]    --> src/frontend/parser.rs:143:8
[INFO] [stderr]     |
[INFO] [stderr] 143 |     fn primary(&mut self) -> Result<Expr> {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `unexpected`
[INFO] [stderr]    --> src/frontend/parser.rs:163:8
[INFO] [stderr]     |
[INFO] [stderr] 163 |     fn unexpected(&mut self, t: &Token) -> Error {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `eof`
[INFO] [stderr]    --> src/frontend/parser.rs:172:8
[INFO] [stderr]     |
[INFO] [stderr] 172 |     fn eof(&self) -> Error {
[INFO] [stderr]     |        ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `slice`
[INFO] [stderr]   --> src/frontend/scanner.rs:38:8
[INFO] [stderr]    |
[INFO] [stderr] 38 |     fn slice(&self, start: usize, end: usize) -> &str {
[INFO] [stderr]    |        ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `scan_tokens`
[INFO] [stderr]   --> src/frontend/scanner.rs:42:8
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn scan_tokens(&mut self) -> Vec<Token> {
[INFO] [stderr]    |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `is_at_end`
[INFO] [stderr]   --> src/frontend/scanner.rs:57:8
[INFO] [stderr]    |
[INFO] [stderr] 57 |     fn is_at_end(&self) -> bool {
[INFO] [stderr]    |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `scan_token`
[INFO] [stderr]   --> src/frontend/scanner.rs:61:8
[INFO] [stderr]    |
[INFO] [stderr] 61 |     fn scan_token(&mut self) {
[INFO] [stderr]    |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `scan_string`
[INFO] [stderr]    --> src/frontend/scanner.rs:121:8
[INFO] [stderr]     |
[INFO] [stderr] 121 |     fn scan_string(&mut self) {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `scan_comment`
[INFO] [stderr]    --> src/frontend/scanner.rs:151:8
[INFO] [stderr]     |
[INFO] [stderr] 151 |     fn scan_comment(&mut self) {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `scan_new_line`
[INFO] [stderr]    --> src/frontend/scanner.rs:158:8
[INFO] [stderr]     |
[INFO] [stderr] 158 |     fn scan_new_line(&mut self) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `scan_number`
[INFO] [stderr]    --> src/frontend/scanner.rs:163:8
[INFO] [stderr]     |
[INFO] [stderr] 163 |     fn scan_number(&mut self) {
[INFO] [stderr]     |        ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `scan_identifier`
[INFO] [stderr]    --> src/frontend/scanner.rs:186:8
[INFO] [stderr]     |
[INFO] [stderr] 186 |     fn scan_identifier(&mut self) {
[INFO] [stderr]     |        ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `match_str`
[INFO] [stderr]    --> src/frontend/scanner.rs:201:8
[INFO] [stderr]     |
[INFO] [stderr] 201 |     fn match_str(&mut self, expected: &str) -> bool {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `current_char`
[INFO] [stderr]    --> src/frontend/scanner.rs:210:8
[INFO] [stderr]     |
[INFO] [stderr] 210 |     fn current_char(&mut self) -> &str {
[INFO] [stderr]     |        ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `advance`
[INFO] [stderr]    --> src/frontend/scanner.rs:214:8
[INFO] [stderr]     |
[INFO] [stderr] 214 |     fn advance(&mut self) -> Option<&str> {
[INFO] [stderr]     |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek`
[INFO] [stderr]    --> src/frontend/scanner.rs:220:8
[INFO] [stderr]     |
[INFO] [stderr] 220 |     fn peek(&mut self, n: Option<usize>) -> Option<&str> {
[INFO] [stderr]     |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `peek_next`
[INFO] [stderr]    --> src/frontend/scanner.rs:234:8
[INFO] [stderr]     |
[INFO] [stderr] 234 |     fn peek_next(&mut self) -> Option<&str> {
[INFO] [stderr]     |        ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `create_token`
[INFO] [stderr]    --> src/frontend/scanner.rs:238:8
[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: associated function is never used: `add_token`
[INFO] [stderr]    --> src/frontend/scanner.rs:244:8
[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]     Finished test [unoptimized + debuginfo] target(s) in 0.12s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/lox-7562e4d57a9e76f8
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test frontend::token::tests::test_token_to_string ... ok
[INFO] [stdout] test frontend::scanner::test_advance ... ok
[INFO] [stdout] test frontend::token::tests::test_token ... ok
[INFO] [stdout] test frontend::scanner::test_scan_tokens ... ok
[INFO] [stdout] test frontend::scanner::test_scan_number ... ok
[INFO] [stdout] test frontend::scanner::test_scan_identifier ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- frontend::scanner::test_scan_identifier stdout ----
[INFO] [stdout] thread 'frontend::scanner::test_scan_identifier' panicked at 'env_logger::init should not be called after logger initialized: SetLoggerError(())', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/env_logger-0.6.1/src/lib.rs:1043:16
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55fd58493f80 - std::backtrace_rs::backtrace::libunwind::trace::h7cf3ca97bd83fbab
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stdout]    1:     0x55fd58493f80 - std::backtrace_rs::backtrace::trace_unsynchronized::h5a69c674b2d9ea5c
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stdout]    2:     0x55fd58493f80 - std::sys_common::backtrace::_print_fmt::hdf72478dfcb50678
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:79
[INFO] [stdout]    3:     0x55fd58493f80 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1e0bdbb35e83deca
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:58
[INFO] [stdout]    4:     0x55fd584b784c - core::fmt::write::he67f9b17bcb7ee73
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/fmt/mod.rs:1080
[INFO] [stdout]    5:     0x55fd5828c786 - std::io::Write::write_fmt::h68b2e5fe4c78e61a
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/io/mod.rs:1516
[INFO] [stdout]    6:     0x55fd5848e44d - std::io::impls::<impl std::io::Write for alloc::boxed::Box<W>>::write_fmt::he9ebec865e28165c
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/io/impls.rs:179
[INFO] [stdout]    7:     0x55fd5849649d - std::sys_common::backtrace::_print::haa20918e28a126c5
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:61
[INFO] [stdout]    8:     0x55fd5849649d - std::sys_common::backtrace::print::h49e772a4873d9076
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:48
[INFO] [stdout]    9:     0x55fd5849649d - std::panicking::default_hook::{{closure}}::hb218b305d15e3f11
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:208
[INFO] [stdout]   10:     0x55fd584960f2 - std::panicking::default_hook::h63997b7b949e1ce0
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:224
[INFO] [stdout]   11:     0x55fd58496b81 - std::panicking::rust_panic_with_hook::hb54f09ccadf64bd3
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:577
[INFO] [stdout]   12:     0x55fd58496729 - std::panicking::begin_panic_handler::{{closure}}::h8b43445b254eeb30
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:484
[INFO] [stdout]   13:     0x55fd5849440c - std::sys_common::backtrace::__rust_end_short_backtrace::hacd691450edfeae0
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:153
[INFO] [stdout]   14:     0x55fd584966e9 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:483
[INFO] [stdout]   15:     0x55fd584b6121 - core::panicking::panic_fmt::h5b17d4a0e853d0f5
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/panicking.rs:85
[INFO] [stdout]   16:     0x55fd584b5f43 - core::option::expect_none_failed::hd08bf36cae411fff
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/option.rs:1234
[INFO] [stdout]   17:     0x55fd582cceba - core::result::Result<T,E>::expect::h7b4e067641c7e4e0
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/result.rs:933
[INFO] [stdout]   18:     0x55fd582d49ad - env_logger::init::hb283a6fb8f0b568b
[INFO] [stdout]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/env_logger-0.6.1/src/lib.rs:1043
[INFO] [stdout]   19:     0x55fd58285e17 - lox::frontend::scanner::tests::init::h99dbb91f7961e0e1
[INFO] [stdout]                                at /opt/rustwide/workdir/src/frontend/scanner.rs:254
[INFO] [stdout]   20:     0x55fd58274962 - lox::frontend::scanner::test_scan_identifier::hb02919764f9fa453
[INFO] [stdout]                                at /opt/rustwide/workdir/src/frontend/scanner.rs:264
[INFO] [stdout]   21:     0x55fd5827493a - lox::frontend::scanner::test_scan_identifier::{{closure}}::h8f92dd181f8aa1ce
[INFO] [stdout]                                at /opt/rustwide/workdir/src/frontend/scanner.rs:263
[INFO] [stdout]   22:     0x55fd582846ee - core::ops::function::FnOnce::call_once::h60b1f1c7f631d972
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:227
[INFO] [stdout]   23:     0x55fd582b3573 - core::ops::function::FnOnce::call_once::hcd3fa2f0696c1015
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:227
[INFO] [stdout]   24:     0x55fd582b3573 - test::__rust_begin_short_backtrace::h113f97c5e5ab7d4a
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/test/src/lib.rs:516
[INFO] [stdout]   25:     0x55fd582b1a78 - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h01fd09163cae2442
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/boxed.rs:1042
[INFO] [stdout]   26:     0x55fd582b1a78 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h0da6b685ae74a04a
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:308
[INFO] [stdout]   27:     0x55fd582b1a78 - std::panicking::try::do_call::h564a32f132f2c264
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:381
[INFO] [stdout]   28:     0x55fd582b1a78 - std::panicking::try::h477cfd4b06a2e64a
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:345
[INFO] [stdout]   29:     0x55fd582b1a78 - std::panic::catch_unwind::hdb5abc6d008c399d
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:382
[INFO] [stdout]   30:     0x55fd582b1a78 - test::run_test_in_process::he8ff7dec91b275be
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/test/src/lib.rs:543
[INFO] [stdout]   31:     0x55fd582b1a78 - test::run_test::run_test_inner::{{closure}}::hfd9f49e4a4ff9162
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/test/src/lib.rs:449
[INFO] [stdout]   32:     0x55fd5828bb06 - std::sys_common::backtrace::__rust_begin_short_backtrace::hee6d60d5bb466aff
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:137
[INFO] [stdout]   33:     0x55fd58290c75 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h988cecdf9ebbaf00
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/thread/mod.rs:464
[INFO] [stdout]   34:     0x55fd58290c75 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h330cf727ec126982
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:308
[INFO] [stdout]   35:     0x55fd58290c75 - std::panicking::try::do_call::h6cd25078f4a5ea13
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:381
[INFO] [stdout]   36:     0x55fd58290c75 - std::panicking::try::h84b1d49961301705
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:345
[INFO] [stdout]   37:     0x55fd58290c75 - std::panic::catch_unwind::h6145324593b3654b
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:382
[INFO] [stdout]   38:     0x55fd58290c75 - std::thread::Builder::spawn_unchecked::{{closure}}::ha41e72e8024f9192
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/thread/mod.rs:463
[INFO] [stdout]   39:     0x55fd58290c75 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hfb5034cf1f1be223
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:227
[INFO] [stdout]   40:     0x55fd5849cfea - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::hd4d30e37db281e8f
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/boxed.rs:1042
[INFO] [stdout]   41:     0x55fd5849cfea - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h019185a215ba16e4
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/boxed.rs:1042
[INFO] [stdout]   42:     0x55fd5849cfea - std::sys::unix::thread::Thread::new::thread_start::h33c6d7cf25f9291f
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys/unix/thread.rs:87
[INFO] [stdout]   43:     0x7f710aa30609 - start_thread
[INFO] [stdout]   44:     0x7f710acbb103 - clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     frontend::scanner::test_scan_identifier
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 5 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--lib'
[INFO] running `Command { std: "docker" "inspect" "bacf6445ddb6869d527041091b44313e9de70e5a182d4cf828353a65b477af6c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bacf6445ddb6869d527041091b44313e9de70e5a182d4cf828353a65b477af6c", kill_on_drop: false }`
[INFO] [stdout] bacf6445ddb6869d527041091b44313e9de70e5a182d4cf828353a65b477af6c
