[INFO] cloning repository https://github.com/mcon/craftinginterpreters-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mcon/craftinginterpreters-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcon%2Fcraftinginterpreters-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcon%2Fcraftinginterpreters-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 7a3f64d224860b6c44a3f5f8eefa775e9b58de37
[INFO] testing mcon/craftinginterpreters-rust against 1.76.0 for beta-1.77-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcon%2Fcraftinginterpreters-rust" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mcon/craftinginterpreters-rust on toolchain 1.76.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mcon/craftinginterpreters-rust
[INFO] finished tweaking git repo https://github.com/mcon/craftinginterpreters-rust
[INFO] tweaked toml for git repo https://github.com/mcon/craftinginterpreters-rust written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mcon/craftinginterpreters-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.76.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ebd68283213c8cb13733c0d3c6e666a0f0404ab39e36fb80fec29db45c751fe0
[INFO] running `Command { std: "docker" "start" "-a" "ebd68283213c8cb13733c0d3c6e666a0f0404ab39e36fb80fec29db45c751fe0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ebd68283213c8cb13733c0d3c6e666a0f0404ab39e36fb80fec29db45c751fe0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebd68283213c8cb13733c0d3c6e666a0f0404ab39e36fb80fec29db45c751fe0", kill_on_drop: false }`
[INFO] [stdout] ebd68283213c8cb13733c0d3c6e666a0f0404ab39e36fb80fec29db45c751fe0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b0691e6948c8d3baa34f012a002effa53a0785ec2db0eea74ae7d032dac9dde5
[INFO] running `Command { std: "docker" "start" "-a" "b0691e6948c8d3baa34f012a002effa53a0785ec2db0eea74ae7d032dac9dde5", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling argparse v0.2.2
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling loxrust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/parser.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Identifier`
[INFO] [stdout]  --> src/interpreter.rs:1:68
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ast::{Exp, BinaryExp, GroupingExp, UnaryExp, LiteralExp, Stmt, Identifier};
[INFO] [stdout]   |                                                                    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> src/interpreter.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/interpreter.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ast::Identifier`
[INFO] [stdout]  --> src/environment.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ast::Identifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> src/environment.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/environment.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:26:64
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn instances_to_discriminants<A> (items : &'static [A]) -> Box<Iterator<Item=Discriminant<A>>> {
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn instances_to_discriminants<A> (items : &'static [A]) -> Box<dyn Iterator<Item=Discriminant<A>>> {
[INFO] [stdout]    |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:18:43
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn matches(&self, valid_tokens : &mut Iterator<Item = Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn matches(&self, valid_tokens : &mut dyn Iterator<Item = Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:94:60
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn consume_valid_tokens(&mut self, valid_tokens : &mut Iterator<Item=Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn consume_valid_tokens(&mut self, valid_tokens : &mut dyn Iterator<Item=Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:108:57
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn execute_level(&mut self, valid_tokens : &mut Box<Iterator<Item=Discriminant<TokenType>>>, previous_exp : Exp,
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn execute_level(&mut self, valid_tokens : &mut Box<dyn Iterator<Item=Discriminant<TokenType>>>, previous_exp : Exp,
[INFO] [stdout]     |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:109:34
[INFO] [stdout]     |
[INFO] [stdout] 109 |         current_exp_generator : &Fn(&mut Parser, &Token, Exp) -> Result<Exp, String>) -> Result<Exp, String> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 109 |         current_exp_generator : &dyn Fn(&mut Parser, &Token, Exp) -> Result<Exp, String>) -> Result<Exp, String> {
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/scanner.rs:276:9
[INFO] [stdout]     |
[INFO] [stdout] 267 | /             match string.parse::<i64>() {
[INFO] [stdout] 268 | |                 Ok(result) => return Some(TokenType::Literal(Literal::NUMBER(result))),
[INFO] [stdout] 269 | |                 Err(_) => {
[INFO] [stdout] 270 | |                     self.errors.push(format!("Unable to parse number on line {}", self.line));
[INFO] [stdout] 271 | |                     return None
[INFO] [stdout] 272 | |                 }
[INFO] [stdout] 273 | |             }
[INFO] [stdout]     | |_____________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] ...
[INFO] [stdout] 276 |           self.errors.push(format!("Unknown error parsing number on line {}", self.line));
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `character`
[INFO] [stdout]    --> src/scanner.rs:226:13
[INFO] [stdout]     |
[INFO] [stdout] 226 |             character @ '0'..='9' => {
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_character`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/interpreter.rs:40:28
[INFO] [stdout]    |
[INFO] [stdout] 40 |         stmts_success.map(|x| ())
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:106:51
[INFO] [stdout]     |
[INFO] [stdout] 106 |             Token { token_type: TokenType::MINUS, lexeme, line } => {
[INFO] [stdout]     |                                                   ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:106:59
[INFO] [stdout]     |
[INFO] [stdout] 106 |             Token { token_type: TokenType::MINUS, lexeme, line } => {
[INFO] [stdout]     |                                                           ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:110:51
[INFO] [stdout]     |
[INFO] [stdout] 110 |             Token { token_type: TokenType::SLASH, lexeme, line } => {
[INFO] [stdout]     |                                                   ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:110:59
[INFO] [stdout]     |
[INFO] [stdout] 110 |             Token { token_type: TokenType::SLASH, lexeme, line } => {
[INFO] [stdout]     |                                                           ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:114:50
[INFO] [stdout]     |
[INFO] [stdout] 114 |             Token { token_type: TokenType::STAR, lexeme, line } => {
[INFO] [stdout]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:114:58
[INFO] [stdout]     |
[INFO] [stdout] 114 |             Token { token_type: TokenType::STAR, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:118:53
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Token { token_type: TokenType::GREATER, lexeme, line } => {
[INFO] [stdout]     |                                                     ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:118:61
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Token { token_type: TokenType::GREATER, lexeme, line } => {
[INFO] [stdout]     |                                                             ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:122:58
[INFO] [stdout]     |
[INFO] [stdout] 122 |             Token { token_type: TokenType::GreaterEqual, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:122:66
[INFO] [stdout]     |
[INFO] [stdout] 122 |             Token { token_type: TokenType::GreaterEqual, lexeme, line } => {
[INFO] [stdout]     |                                                                  ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:126:50
[INFO] [stdout]     |
[INFO] [stdout] 126 |             Token { token_type: TokenType::LESS, lexeme, line } => {
[INFO] [stdout]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:126:58
[INFO] [stdout]     |
[INFO] [stdout] 126 |             Token { token_type: TokenType::LESS, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:130:55
[INFO] [stdout]     |
[INFO] [stdout] 130 |             Token { token_type: TokenType::LessEqual, lexeme, line } => {
[INFO] [stdout]     |                                                       ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:130:63
[INFO] [stdout]     |
[INFO] [stdout] 130 |             Token { token_type: TokenType::LessEqual, lexeme, line } => {
[INFO] [stdout]     |                                                               ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:134:50
[INFO] [stdout]     |
[INFO] [stdout] 134 |             Token { token_type: TokenType::PLUS, lexeme, line } => {
[INFO] [stdout]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:134:58
[INFO] [stdout]     |
[INFO] [stdout] 134 |             Token { token_type: TokenType::PLUS, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:144:55
[INFO] [stdout]     |
[INFO] [stdout] 144 |             Token { token_type: TokenType::BangEqual, lexeme, line } => {
[INFO] [stdout]     |                                                       ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:144:63
[INFO] [stdout]     |
[INFO] [stdout] 144 |             Token { token_type: TokenType::BangEqual, lexeme, line } => {
[INFO] [stdout]     |                                                               ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:148:56
[INFO] [stdout]     |
[INFO] [stdout] 148 |             Token { token_type: TokenType::EqualEqual, lexeme, line } => {
[INFO] [stdout]     |                                                        ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:148:64
[INFO] [stdout]     |
[INFO] [stdout] 148 |             Token { token_type: TokenType::EqualEqual, lexeme, line } => {
[INFO] [stdout]     |                                                                ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:152:33
[INFO] [stdout]     |
[INFO] [stdout] 152 |             Token { token_type, lexeme, line } =>
[INFO] [stdout]     |                                 ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/interpreter.rs:140:25
[INFO] [stdout]     |
[INFO] [stdout] 140 |                         x => {
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/interpreter.rs:99:21
[INFO] [stdout]    |
[INFO] [stdout] 99 |                     x => {Err("Non-number values not supported with operator -".to_string())},
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l_other`
[INFO] [stdout]    --> src/interpreter.rs:188:13
[INFO] [stdout]     |
[INFO] [stdout] 188 |         (Ok(l_other), Err(r_other)) => Err(r_other),
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_l_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 39 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
[INFO] running `Command { std: "docker" "inspect" "b0691e6948c8d3baa34f012a002effa53a0785ec2db0eea74ae7d032dac9dde5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0691e6948c8d3baa34f012a002effa53a0785ec2db0eea74ae7d032dac9dde5", kill_on_drop: false }`
[INFO] [stdout] b0691e6948c8d3baa34f012a002effa53a0785ec2db0eea74ae7d032dac9dde5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c05ef98b29b6981c31e1665c1d433e19d22371997bfab599bd8cde47b7aa9ee4
[INFO] running `Command { std: "docker" "start" "-a" "c05ef98b29b6981c31e1665c1d433e19d22371997bfab599bd8cde47b7aa9ee4", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/parser.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Identifier`
[INFO] [stdout]  --> src/interpreter.rs:1:68
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ast::{Exp, BinaryExp, GroupingExp, UnaryExp, LiteralExp, Stmt, Identifier};
[INFO] [stdout]   |                                                                    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> src/interpreter.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/interpreter.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ast::Identifier`
[INFO] [stdout]  --> src/environment.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ast::Identifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> src/environment.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/environment.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:26:64
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn instances_to_discriminants<A> (items : &'static [A]) -> Box<Iterator<Item=Discriminant<A>>> {
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn instances_to_discriminants<A> (items : &'static [A]) -> Box<dyn Iterator<Item=Discriminant<A>>> {
[INFO] [stdout]    |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:18:43
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn matches(&self, valid_tokens : &mut Iterator<Item = Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn matches(&self, valid_tokens : &mut dyn Iterator<Item = Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:94:60
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn consume_valid_tokens(&mut self, valid_tokens : &mut Iterator<Item=Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn consume_valid_tokens(&mut self, valid_tokens : &mut dyn Iterator<Item=Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:108:57
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn execute_level(&mut self, valid_tokens : &mut Box<Iterator<Item=Discriminant<TokenType>>>, previous_exp : Exp,
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn execute_level(&mut self, valid_tokens : &mut Box<dyn Iterator<Item=Discriminant<TokenType>>>, previous_exp : Exp,
[INFO] [stdout]     |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:109:34
[INFO] [stdout]     |
[INFO] [stdout] 109 |         current_exp_generator : &Fn(&mut Parser, &Token, Exp) -> Result<Exp, String>) -> Result<Exp, String> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 109 |         current_exp_generator : &dyn Fn(&mut Parser, &Token, Exp) -> Result<Exp, String>) -> Result<Exp, String> {
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/scanner.rs:276:9
[INFO] [stdout]     |
[INFO] [stdout] 267 | /             match string.parse::<i64>() {
[INFO] [stdout] 268 | |                 Ok(result) => return Some(TokenType::Literal(Literal::NUMBER(result))),
[INFO] [stdout] 269 | |                 Err(_) => {
[INFO] [stdout] 270 | |                     self.errors.push(format!("Unable to parse number on line {}", self.line));
[INFO] [stdout] 271 | |                     return None
[INFO] [stdout] 272 | |                 }
[INFO] [stdout] 273 | |             }
[INFO] [stdout]     | |_____________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] ...
[INFO] [stdout] 276 |           self.errors.push(format!("Unknown error parsing number on line {}", self.line));
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `character`
[INFO] [stdout]    --> src/scanner.rs:226:13
[INFO] [stdout]     |
[INFO] [stdout] 226 |             character @ '0'..='9' => {
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_character`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/interpreter.rs:40:28
[INFO] [stdout]    |
[INFO] [stdout] 40 |         stmts_success.map(|x| ())
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:106:51
[INFO] [stdout]     |
[INFO] [stdout] 106 |             Token { token_type: TokenType::MINUS, lexeme, line } => {
[INFO] [stdout]     |                                                   ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:106:59
[INFO] [stdout]     |
[INFO] [stdout] 106 |             Token { token_type: TokenType::MINUS, lexeme, line } => {
[INFO] [stdout]     |                                                           ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:110:51
[INFO] [stdout]     |
[INFO] [stdout] 110 |             Token { token_type: TokenType::SLASH, lexeme, line } => {
[INFO] [stdout]     |                                                   ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:110:59
[INFO] [stdout]     |
[INFO] [stdout] 110 |             Token { token_type: TokenType::SLASH, lexeme, line } => {
[INFO] [stdout]     |                                                           ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:114:50
[INFO] [stdout]     |
[INFO] [stdout] 114 |             Token { token_type: TokenType::STAR, lexeme, line } => {
[INFO] [stdout]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:114:58
[INFO] [stdout]     |
[INFO] [stdout] 114 |             Token { token_type: TokenType::STAR, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:118:53
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Token { token_type: TokenType::GREATER, lexeme, line } => {
[INFO] [stdout]     |                                                     ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:118:61
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Token { token_type: TokenType::GREATER, lexeme, line } => {
[INFO] [stdout]     |                                                             ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:122:58
[INFO] [stdout]     |
[INFO] [stdout] 122 |             Token { token_type: TokenType::GreaterEqual, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:122:66
[INFO] [stdout]     |
[INFO] [stdout] 122 |             Token { token_type: TokenType::GreaterEqual, lexeme, line } => {
[INFO] [stdout]     |                                                                  ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:126:50
[INFO] [stdout]     |
[INFO] [stdout] 126 |             Token { token_type: TokenType::LESS, lexeme, line } => {
[INFO] [stdout]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:126:58
[INFO] [stdout]     |
[INFO] [stdout] 126 |             Token { token_type: TokenType::LESS, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:130:55
[INFO] [stdout]     |
[INFO] [stdout] 130 |             Token { token_type: TokenType::LessEqual, lexeme, line } => {
[INFO] [stdout]     |                                                       ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:130:63
[INFO] [stdout]     |
[INFO] [stdout] 130 |             Token { token_type: TokenType::LessEqual, lexeme, line } => {
[INFO] [stdout]     |                                                               ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:134:50
[INFO] [stdout]     |
[INFO] [stdout] 134 |             Token { token_type: TokenType::PLUS, lexeme, line } => {
[INFO] [stdout]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:134:58
[INFO] [stdout]     |
[INFO] [stdout] 134 |             Token { token_type: TokenType::PLUS, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:144:55
[INFO] [stdout]     |
[INFO] [stdout] 144 |             Token { token_type: TokenType::BangEqual, lexeme, line } => {
[INFO] [stdout]     |                                                       ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:144:63
[INFO] [stdout]     |
[INFO] [stdout] 144 |             Token { token_type: TokenType::BangEqual, lexeme, line } => {
[INFO] [stdout]     |                                                               ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling loxrust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:148:56
[INFO] [stdout]     |
[INFO] [stdout] 148 |             Token { token_type: TokenType::EqualEqual, lexeme, line } => {
[INFO] [stdout]     |                                                        ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:148:64
[INFO] [stdout]     |
[INFO] [stdout] 148 |             Token { token_type: TokenType::EqualEqual, lexeme, line } => {
[INFO] [stdout]     |                                                                ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:152:33
[INFO] [stdout]     |
[INFO] [stdout] 152 |             Token { token_type, lexeme, line } =>
[INFO] [stdout]     |                                 ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/interpreter.rs:140:25
[INFO] [stdout]     |
[INFO] [stdout] 140 |                         x => {
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/interpreter.rs:99:21
[INFO] [stdout]    |
[INFO] [stdout] 99 |                     x => {Err("Non-number values not supported with operator -".to_string())},
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l_other`
[INFO] [stdout]    --> src/interpreter.rs:188:13
[INFO] [stdout]     |
[INFO] [stdout] 188 |         (Ok(l_other), Err(r_other)) => Err(r_other),
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_l_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 39 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/parser.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Identifier`
[INFO] [stdout]  --> src/interpreter.rs:1:68
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ast::{Exp, BinaryExp, GroupingExp, UnaryExp, LiteralExp, Stmt, Identifier};
[INFO] [stdout]   |                                                                    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> src/interpreter.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/interpreter.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ast::Identifier`
[INFO] [stdout]  --> src/environment.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ast::Identifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> src/environment.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/environment.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:26:64
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn instances_to_discriminants<A> (items : &'static [A]) -> Box<Iterator<Item=Discriminant<A>>> {
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn instances_to_discriminants<A> (items : &'static [A]) -> Box<dyn Iterator<Item=Discriminant<A>>> {
[INFO] [stdout]    |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:18:43
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn matches(&self, valid_tokens : &mut Iterator<Item = Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn matches(&self, valid_tokens : &mut dyn Iterator<Item = Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:94:60
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn consume_valid_tokens(&mut self, valid_tokens : &mut Iterator<Item=Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn consume_valid_tokens(&mut self, valid_tokens : &mut dyn Iterator<Item=Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:108:57
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn execute_level(&mut self, valid_tokens : &mut Box<Iterator<Item=Discriminant<TokenType>>>, previous_exp : Exp,
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn execute_level(&mut self, valid_tokens : &mut Box<dyn Iterator<Item=Discriminant<TokenType>>>, previous_exp : Exp,
[INFO] [stdout]     |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:109:34
[INFO] [stdout]     |
[INFO] [stdout] 109 |         current_exp_generator : &Fn(&mut Parser, &Token, Exp) -> Result<Exp, String>) -> Result<Exp, String> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 109 |         current_exp_generator : &dyn Fn(&mut Parser, &Token, Exp) -> Result<Exp, String>) -> Result<Exp, String> {
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/scanner.rs:276:9
[INFO] [stdout]     |
[INFO] [stdout] 267 | /             match string.parse::<i64>() {
[INFO] [stdout] 268 | |                 Ok(result) => return Some(TokenType::Literal(Literal::NUMBER(result))),
[INFO] [stdout] 269 | |                 Err(_) => {
[INFO] [stdout] 270 | |                     self.errors.push(format!("Unable to parse number on line {}", self.line));
[INFO] [stdout] 271 | |                     return None
[INFO] [stdout] 272 | |                 }
[INFO] [stdout] 273 | |             }
[INFO] [stdout]     | |_____________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] ...
[INFO] [stdout] 276 |           self.errors.push(format!("Unknown error parsing number on line {}", self.line));
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `character`
[INFO] [stdout]    --> src/scanner.rs:226:13
[INFO] [stdout]     |
[INFO] [stdout] 226 |             character @ '0'..='9' => {
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_character`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/interpreter.rs:40:28
[INFO] [stdout]    |
[INFO] [stdout] 40 |         stmts_success.map(|x| ())
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:106:51
[INFO] [stdout]     |
[INFO] [stdout] 106 |             Token { token_type: TokenType::MINUS, lexeme, line } => {
[INFO] [stdout]     |                                                   ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:106:59
[INFO] [stdout]     |
[INFO] [stdout] 106 |             Token { token_type: TokenType::MINUS, lexeme, line } => {
[INFO] [stdout]     |                                                           ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:110:51
[INFO] [stdout]     |
[INFO] [stdout] 110 |             Token { token_type: TokenType::SLASH, lexeme, line } => {
[INFO] [stdout]     |                                                   ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:110:59
[INFO] [stdout]     |
[INFO] [stdout] 110 |             Token { token_type: TokenType::SLASH, lexeme, line } => {
[INFO] [stdout]     |                                                           ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:114:50
[INFO] [stdout]     |
[INFO] [stdout] 114 |             Token { token_type: TokenType::STAR, lexeme, line } => {
[INFO] [stdout]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:114:58
[INFO] [stdout]     |
[INFO] [stdout] 114 |             Token { token_type: TokenType::STAR, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:118:53
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Token { token_type: TokenType::GREATER, lexeme, line } => {
[INFO] [stdout]     |                                                     ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:118:61
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Token { token_type: TokenType::GREATER, lexeme, line } => {
[INFO] [stdout]     |                                                             ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:122:58
[INFO] [stdout]     |
[INFO] [stdout] 122 |             Token { token_type: TokenType::GreaterEqual, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:122:66
[INFO] [stdout]     |
[INFO] [stdout] 122 |             Token { token_type: TokenType::GreaterEqual, lexeme, line } => {
[INFO] [stdout]     |                                                                  ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:126:50
[INFO] [stdout]     |
[INFO] [stdout] 126 |             Token { token_type: TokenType::LESS, lexeme, line } => {
[INFO] [stdout]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:126:58
[INFO] [stdout]     |
[INFO] [stdout] 126 |             Token { token_type: TokenType::LESS, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:130:55
[INFO] [stdout]     |
[INFO] [stdout] 130 |             Token { token_type: TokenType::LessEqual, lexeme, line } => {
[INFO] [stdout]     |                                                       ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:130:63
[INFO] [stdout]     |
[INFO] [stdout] 130 |             Token { token_type: TokenType::LessEqual, lexeme, line } => {
[INFO] [stdout]     |                                                               ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:134:50
[INFO] [stdout]     |
[INFO] [stdout] 134 |             Token { token_type: TokenType::PLUS, lexeme, line } => {
[INFO] [stdout]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:134:58
[INFO] [stdout]     |
[INFO] [stdout] 134 |             Token { token_type: TokenType::PLUS, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:144:55
[INFO] [stdout]     |
[INFO] [stdout] 144 |             Token { token_type: TokenType::BangEqual, lexeme, line } => {
[INFO] [stdout]     |                                                       ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:144:63
[INFO] [stdout]     |
[INFO] [stdout] 144 |             Token { token_type: TokenType::BangEqual, lexeme, line } => {
[INFO] [stdout]     |                                                               ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:148:56
[INFO] [stdout]     |
[INFO] [stdout] 148 |             Token { token_type: TokenType::EqualEqual, lexeme, line } => {
[INFO] [stdout]     |                                                        ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:148:64
[INFO] [stdout]     |
[INFO] [stdout] 148 |             Token { token_type: TokenType::EqualEqual, lexeme, line } => {
[INFO] [stdout]     |                                                                ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:152:33
[INFO] [stdout]     |
[INFO] [stdout] 152 |             Token { token_type, lexeme, line } =>
[INFO] [stdout]     |                                 ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/interpreter.rs:140:25
[INFO] [stdout]     |
[INFO] [stdout] 140 |                         x => {
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/interpreter.rs:99:21
[INFO] [stdout]    |
[INFO] [stdout] 99 |                     x => {Err("Non-number values not supported with operator -".to_string())},
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l_other`
[INFO] [stdout]    --> src/interpreter.rs:188:13
[INFO] [stdout]     |
[INFO] [stdout] 188 |         (Ok(l_other), Err(r_other)) => Err(r_other),
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_l_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/parser.rs:295:32
[INFO] [stdout]     |
[INFO] [stdout] 295 |             Err(err) => panic!(err)
[INFO] [stdout]     |                                ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 295 |             Err(err) => panic!("{}", err)
[INFO] [stdout]     |                                +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/parser.rs:332:32
[INFO] [stdout]     |
[INFO] [stdout] 332 |             Err(err) => panic!(err)
[INFO] [stdout]     |                                ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 332 |             Err(err) => panic!("{}", err)
[INFO] [stdout]     |                                +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 41 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `Command { std: "docker" "inspect" "c05ef98b29b6981c31e1665c1d433e19d22371997bfab599bd8cde47b7aa9ee4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c05ef98b29b6981c31e1665c1d433e19d22371997bfab599bd8cde47b7aa9ee4", kill_on_drop: false }`
[INFO] [stdout] c05ef98b29b6981c31e1665c1d433e19d22371997bfab599bd8cde47b7aa9ee4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+1.76.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] af5564444037004050cbf106345590b39b79b05974276022407e58084ddf61a5
[INFO] running `Command { std: "docker" "start" "-a" "af5564444037004050cbf106345590b39b79b05974276022407e58084ddf61a5", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::borrow::Borrow`
[INFO] [stderr]  --> src/parser.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::borrow::Borrow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Identifier`
[INFO] [stderr]  --> src/interpreter.rs:1:68
[INFO] [stderr]   |
[INFO] [stderr] 1 | use ast::{Exp, BinaryExp, GroupingExp, UnaryExp, LiteralExp, Stmt, Identifier};
[INFO] [stderr]   |                                                                    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::FromIterator`
[INFO] [stderr]  --> src/interpreter.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::iter::FromIterator;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Borrow`
[INFO] [stderr]  --> src/interpreter.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::borrow::Borrow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ast::Identifier`
[INFO] [stderr]  --> src/environment.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use ast::Identifier;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::convert::TryInto`
[INFO] [stderr]  --> src/environment.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::convert::TryInto;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Borrow`
[INFO] [stderr]  --> src/environment.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::borrow::Borrow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser.rs:26:64
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn instances_to_discriminants<A> (items : &'static [A]) -> Box<Iterator<Item=Discriminant<A>>> {
[INFO] [stderr]    |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn instances_to_discriminants<A> (items : &'static [A]) -> Box<dyn Iterator<Item=Discriminant<A>>> {
[INFO] [stderr]    |                                                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser.rs:18:43
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn matches(&self, valid_tokens : &mut Iterator<Item = Discriminant<TokenType>>) -> bool {
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn matches(&self, valid_tokens : &mut dyn Iterator<Item = Discriminant<TokenType>>) -> bool {
[INFO] [stderr]    |                                           +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser.rs:94:60
[INFO] [stderr]    |
[INFO] [stderr] 94 |     fn consume_valid_tokens(&mut self, valid_tokens : &mut Iterator<Item=Discriminant<TokenType>>) -> bool {
[INFO] [stderr]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 94 |     fn consume_valid_tokens(&mut self, valid_tokens : &mut dyn Iterator<Item=Discriminant<TokenType>>) -> bool {
[INFO] [stderr]    |                                                            +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser.rs:108:57
[INFO] [stderr]     |
[INFO] [stderr] 108 |     fn execute_level(&mut self, valid_tokens : &mut Box<Iterator<Item=Discriminant<TokenType>>>, previous_exp : Exp,
[INFO] [stderr]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 108 |     fn execute_level(&mut self, valid_tokens : &mut Box<dyn Iterator<Item=Discriminant<TokenType>>>, previous_exp : Exp,
[INFO] [stderr]     |                                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser.rs:109:34
[INFO] [stderr]     |
[INFO] [stderr] 109 |         current_exp_generator : &Fn(&mut Parser, &Token, Exp) -> Result<Exp, String>) -> Result<Exp, String> {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 109 |         current_exp_generator : &dyn Fn(&mut Parser, &Token, Exp) -> Result<Exp, String>) -> Result<Exp, String> {
[INFO] [stderr]     |                                  +++
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/scanner.rs:276:9
[INFO] [stderr]     |
[INFO] [stderr] 267 | /             match string.parse::<i64>() {
[INFO] [stderr] 268 | |                 Ok(result) => return Some(TokenType::Literal(Literal::NUMBER(result))),
[INFO] [stderr] 269 | |                 Err(_) => {
[INFO] [stderr] 270 | |                     self.errors.push(format!("Unable to parse number on line {}", self.line));
[INFO] [stderr] 271 | |                     return None
[INFO] [stderr] 272 | |                 }
[INFO] [stderr] 273 | |             }
[INFO] [stderr]     | |_____________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stderr] ...
[INFO] [stderr] 276 |           self.errors.push(format!("Unknown error parsing number on line {}", self.line));
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `character`
[INFO] [stderr]    --> src/scanner.rs:226:13
[INFO] [stderr]     |
[INFO] [stderr] 226 |             character @ '0'..='9' => {
[INFO] [stderr]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_character`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/interpreter.rs:40:28
[INFO] [stderr]    |
[INFO] [stderr] 40 |         stmts_success.map(|x| ())
[INFO] [stderr]    |                            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:106:51
[INFO] [stderr]     |
[INFO] [stderr] 106 |             Token { token_type: TokenType::MINUS, lexeme, line } => {
[INFO] [stderr]     |                                                   ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:106:59
[INFO] [stderr]     |
[INFO] [stderr] 106 |             Token { token_type: TokenType::MINUS, lexeme, line } => {
[INFO] [stderr]     |                                                           ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:110:51
[INFO] [stderr]     |
[INFO] [stderr] 110 |             Token { token_type: TokenType::SLASH, lexeme, line } => {
[INFO] [stderr]     |                                                   ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:110:59
[INFO] [stderr]     |
[INFO] [stderr] 110 |             Token { token_type: TokenType::SLASH, lexeme, line } => {
[INFO] [stderr]     |                                                           ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:114:50
[INFO] [stderr]     |
[INFO] [stderr] 114 |             Token { token_type: TokenType::STAR, lexeme, line } => {
[INFO] [stderr]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:114:58
[INFO] [stderr]     |
[INFO] [stderr] 114 |             Token { token_type: TokenType::STAR, lexeme, line } => {
[INFO] [stderr]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:118:53
[INFO] [stderr]     |
[INFO] [stderr] 118 |             Token { token_type: TokenType::GREATER, lexeme, line } => {
[INFO] [stderr]     |                                                     ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:118:61
[INFO] [stderr]     |
[INFO] [stderr] 118 |             Token { token_type: TokenType::GREATER, lexeme, line } => {
[INFO] [stderr]     |                                                             ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:122:58
[INFO] [stderr]     |
[INFO] [stderr] 122 |             Token { token_type: TokenType::GreaterEqual, lexeme, line } => {
[INFO] [stderr]     |                                                          ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:122:66
[INFO] [stderr]     |
[INFO] [stderr] 122 |             Token { token_type: TokenType::GreaterEqual, lexeme, line } => {
[INFO] [stderr]     |                                                                  ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:126:50
[INFO] [stderr]     |
[INFO] [stderr] 126 |             Token { token_type: TokenType::LESS, lexeme, line } => {
[INFO] [stderr]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:126:58
[INFO] [stderr]     |
[INFO] [stderr] 126 |             Token { token_type: TokenType::LESS, lexeme, line } => {
[INFO] [stderr]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:130:55
[INFO] [stderr]     |
[INFO] [stderr] 130 |             Token { token_type: TokenType::LessEqual, lexeme, line } => {
[INFO] [stderr]     |                                                       ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:130:63
[INFO] [stderr]     |
[INFO] [stderr] 130 |             Token { token_type: TokenType::LessEqual, lexeme, line } => {
[INFO] [stderr]     |                                                               ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:134:50
[INFO] [stderr]     |
[INFO] [stderr] 134 |             Token { token_type: TokenType::PLUS, lexeme, line } => {
[INFO] [stderr]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:134:58
[INFO] [stderr]     |
[INFO] [stderr] 134 |             Token { token_type: TokenType::PLUS, lexeme, line } => {
[INFO] [stderr]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:144:55
[INFO] [stderr]     |
[INFO] [stderr] 144 |             Token { token_type: TokenType::BangEqual, lexeme, line } => {
[INFO] [stderr]     |                                                       ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:144:63
[INFO] [stderr]     |
[INFO] [stderr] 144 |             Token { token_type: TokenType::BangEqual, lexeme, line } => {
[INFO] [stderr]     |                                                               ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:148:56
[INFO] [stderr]     |
[INFO] [stderr] 148 |             Token { token_type: TokenType::EqualEqual, lexeme, line } => {
[INFO] [stderr]     |                                                        ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:148:64
[INFO] [stderr]     |
[INFO] [stderr] 148 |             Token { token_type: TokenType::EqualEqual, lexeme, line } => {
[INFO] [stderr]     |                                                                ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:152:33
[INFO] [stderr]     |
[INFO] [stderr] 152 |             Token { token_type, lexeme, line } =>
[INFO] [stderr]     |                                 ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/interpreter.rs:140:25
[INFO] [stderr]     |
[INFO] [stderr] 140 |                         x => {
[INFO] [stderr]     |                         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/interpreter.rs:99:21
[INFO] [stderr]    |
[INFO] [stderr] 99 |                     x => {Err("Non-number values not supported with operator -".to_string())},
[INFO] [stderr]    |                     ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `l_other`
[INFO] [stderr]    --> src/interpreter.rs:188:13
[INFO] [stderr]     |
[INFO] [stderr] 188 |         (Ok(l_other), Err(r_other)) => Err(r_other),
[INFO] [stderr]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_l_other`
[INFO] [stderr] 
[INFO] [stderr] warning: `loxrust` (lib) generated 39 warnings (run `cargo fix --lib -p loxrust` to apply 38 suggestions)
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/parser.rs:295:32
[INFO] [stderr]     |
[INFO] [stderr] 295 |             Err(err) => panic!(err)
[INFO] [stderr]     |                                ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr] help: add a "{}" format string to `Display` the message
[INFO] [stderr]     |
[INFO] [stderr] 295 |             Err(err) => panic!("{}", err)
[INFO] [stderr]     |                                +++++
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/parser.rs:332:32
[INFO] [stderr]     |
[INFO] [stderr] 332 |             Err(err) => panic!(err)
[INFO] [stderr]     |                                ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr] help: add a "{}" format string to `Display` the message
[INFO] [stderr]     |
[INFO] [stderr] 332 |             Err(err) => panic!("{}", err)
[INFO] [stderr]     |                                +++++
[INFO] [stderr] 
[INFO] [stderr] warning: `loxrust` (lib test) generated 41 warnings (39 duplicates) (run `cargo fix --lib -p loxrust --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/loxrust-17dbf38b6e76c3fb)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test parser::tests::parse_expresion_with_brackets ... ok
[INFO] [stdout] test parser::tests::parse_valid_example_expression ... ok
[INFO] [stdout] test scanner::tests::equals_statement ... ok
[INFO] [stdout] test scanner::tests::scan_string ... ok
[INFO] [stdout] test scanner::tests::statement_with_brackets ... ok
[INFO] [stdout] test ast::tests::ast_printer_simple ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- ast::tests::ast_printer_simple stdout ----
[INFO] [stdout] thread 'ast::tests::ast_printer_simple' panicked at src/ast.rs:156:9:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: "(== (group foobar) 2);"
[INFO] [stdout]  right: "(== (group foobar) 2)"
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55d5a424e526 - std::backtrace_rs::backtrace::libunwind::trace::hbee8a7973eeb6c93
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x55d5a424e526 - std::backtrace_rs::backtrace::trace_unsynchronized::hc8ac75eea3aa6899
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55d5a424e526 - std::sys_common::backtrace::_print_fmt::hc7f3e3b5298b1083
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55d5a424e526 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hbb235daedd7c6190
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55d5a4277680 - core::fmt::rt::Argument::fmt::h76c38a80d925a410
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x55d5a4277680 - core::fmt::write::h3ed6aeaa977c8e45
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x55d5a424bf8f - std::io::Write::write_fmt::h1299aa7741865f2b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/io/mod.rs:1810:15
[INFO] [stdout]    7:     0x55d5a424e304 - std::sys_common::backtrace::_print::h5d645a07e0fcfdbb
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55d5a424e304 - std::sys_common::backtrace::print::h85035a511aafe7a8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55d5a4250077 - std::panicking::default_hook::{{closure}}::hcce8cea212785a25
[INFO] [stdout]   10:     0x55d5a424fd5d - std::panicking::default_hook::hf5fcb0f213fe709a
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x55d5a421e9a7 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h60265c2dfa87ee34
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x55d5a421e9a7 - test::test_main::{{closure}}::h77865bd3127078c6
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x55d5a4250696 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hbc5ccf4eb663e1e5
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x55d5a4250696 - std::panicking::rust_panic_with_hook::h095fccf1dc9379ee
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:783:13
[INFO] [stdout]   15:     0x55d5a42503e2 - std::panicking::begin_panic_handler::{{closure}}::h032ba12139b353db
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:657:13
[INFO] [stdout]   16:     0x55d5a424ea26 - std::sys_common::backtrace::__rust_end_short_backtrace::h9259bc2ff8fd0f76
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x55d5a4250140 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:645:5
[INFO] [stdout]   18:     0x55d5a41d3cd5 - core::panicking::panic_fmt::h784f20a50eaab275
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55d5a41d410b - core::panicking::assert_failed_inner::hbf94b40c37b92af0
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:342:17
[INFO] [stdout]   20:     0x55d5a41e361e - core::panicking::assert_failed::h9691646adf4a3dfe
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panicking.rs:297:5
[INFO] [stdout]   21:     0x55d5a41e894f - loxrust::ast::tests::ast_printer_simple::hf3bd3c17655fa248
[INFO] [stdout]                                at /opt/rustwide/workdir/src/ast.rs:156:9
[INFO] [stdout]   22:     0x55d5a41e8357 - loxrust::ast::tests::ast_printer_simple::{{closure}}::h926516be199692fd
[INFO] [stdout]                                at /opt/rustwide/workdir/src/ast.rs:136:28
[INFO] [stdout]   23:     0x55d5a41db146 - core::ops::function::FnOnce::call_once::h96346e43d0c3e07d
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x55d5a422427f - core::ops::function::FnOnce::call_once::h8dc6907944022cf6
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55d5a422427f - test::__rust_begin_short_backtrace::haae1a87433f1efb3
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:627:18
[INFO] [stdout]   26:     0x55d5a4223001 - test::run_test_in_process::{{closure}}::h8c7decfa7c14e152
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:650:60
[INFO] [stdout]   27:     0x55d5a4223001 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h19e6ff056d9d21e9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x55d5a4223001 - std::panicking::try::do_call::h89c848fcaa37c035
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   29:     0x55d5a4223001 - std::panicking::try::h57ab3dc74e2839b8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   30:     0x55d5a4223001 - std::panic::catch_unwind::hfb6a1b1abc120fb9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x55d5a4223001 - test::run_test_in_process::h5ae2f9875edd562d
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:650:27
[INFO] [stdout]   32:     0x55d5a4223001 - test::run_test::{{closure}}::h35d7300d8928a067
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:573:43
[INFO] [stdout]   33:     0x55d5a41ea336 - test::run_test::{{closure}}::h7525ced405d23d1b
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/test/src/lib.rs:601:41
[INFO] [stdout]   34:     0x55d5a41ea336 - std::sys_common::backtrace::__rust_begin_short_backtrace::h4e7db78ce05afad8
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   35:     0x55d5a41ef397 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hcfbcb64f1a1b3482
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   36:     0x55d5a41ef397 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h9d89c5c4108bd689
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x55d5a41ef397 - std::panicking::try::do_call::h8a4869bc94ec50c9
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:552:40
[INFO] [stdout]   38:     0x55d5a41ef397 - std::panicking::try::h9a576f20ff81ac30
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panicking.rs:516:19
[INFO] [stdout]   39:     0x55d5a41ef397 - std::panic::catch_unwind::hbcb4e3f860ef9830
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/panic.rs:142:14
[INFO] [stdout]   40:     0x55d5a41ef397 - std::thread::Builder::spawn_unchecked_::{{closure}}::h93c79a6be1505948
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   41:     0x55d5a41ef397 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h426d96740c81bdaf
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x55d5a4255145 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h12de4fc57affb195
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   43:     0x55d5a4255145 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h3c619f45059d5cf1
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   44:     0x55d5a4255145 - std::sys::unix::thread::Thread::new::thread_start::hbac657605e4b7389
[INFO] [stdout]                                at /rustc/07dca489ac2d933c78d3c5158e3f43beefeb02ce/library/std/src/sys/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7fd083f0aac3 - <unknown>
[INFO] [stdout]   46:     0x7fd083f9bbf4 - __clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     ast::tests::ast_printer_simple
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 5 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "af5564444037004050cbf106345590b39b79b05974276022407e58084ddf61a5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "af5564444037004050cbf106345590b39b79b05974276022407e58084ddf61a5", kill_on_drop: false }`
[INFO] [stdout] af5564444037004050cbf106345590b39b79b05974276022407e58084ddf61a5
[INFO] testing mcon/craftinginterpreters-rust against beta-2024-02-10 for beta-1.77-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcon%2Fcraftinginterpreters-rust" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mcon/craftinginterpreters-rust on toolchain beta-2024-02-10
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mcon/craftinginterpreters-rust
[INFO] finished tweaking git repo https://github.com/mcon/craftinginterpreters-rust
[INFO] tweaked toml for git repo https://github.com/mcon/craftinginterpreters-rust written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/mcon/craftinginterpreters-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2024-02-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02dfc366fddf42803bf629ebd0cf5a0b9d2531860b3ff684c9ebfbbc01289e89
[INFO] running `Command { std: "docker" "start" "-a" "02dfc366fddf42803bf629ebd0cf5a0b9d2531860b3ff684c9ebfbbc01289e89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02dfc366fddf42803bf629ebd0cf5a0b9d2531860b3ff684c9ebfbbc01289e89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02dfc366fddf42803bf629ebd0cf5a0b9d2531860b3ff684c9ebfbbc01289e89", kill_on_drop: false }`
[INFO] [stdout] 02dfc366fddf42803bf629ebd0cf5a0b9d2531860b3ff684c9ebfbbc01289e89
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e4cdbe554f74faf33b62aac92218735488e01751d9b5339bda0754d17a10bb84
[INFO] running `Command { std: "docker" "start" "-a" "e4cdbe554f74faf33b62aac92218735488e01751d9b5339bda0754d17a10bb84", kill_on_drop: false }`
[INFO] [stderr]    Compiling either v1.5.3
[INFO] [stderr]    Compiling argparse v0.2.2
[INFO] [stderr]    Compiling itertools v0.8.2
[INFO] [stderr]    Compiling loxrust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/parser.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Identifier`
[INFO] [stdout]  --> src/interpreter.rs:1:68
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ast::{Exp, BinaryExp, GroupingExp, UnaryExp, LiteralExp, Stmt, Identifier};
[INFO] [stdout]   |                                                                    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> src/interpreter.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/interpreter.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ast::Identifier`
[INFO] [stdout]  --> src/environment.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ast::Identifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> src/environment.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/environment.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:26:64
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn instances_to_discriminants<A> (items : &'static [A]) -> Box<Iterator<Item=Discriminant<A>>> {
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn instances_to_discriminants<A> (items : &'static [A]) -> Box<dyn Iterator<Item=Discriminant<A>>> {
[INFO] [stdout]    |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:18:43
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn matches(&self, valid_tokens : &mut Iterator<Item = Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn matches(&self, valid_tokens : &mut dyn Iterator<Item = Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:94:60
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn consume_valid_tokens(&mut self, valid_tokens : &mut Iterator<Item=Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn consume_valid_tokens(&mut self, valid_tokens : &mut dyn Iterator<Item=Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:108:57
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn execute_level(&mut self, valid_tokens : &mut Box<Iterator<Item=Discriminant<TokenType>>>, previous_exp : Exp,
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn execute_level(&mut self, valid_tokens : &mut Box<dyn Iterator<Item=Discriminant<TokenType>>>, previous_exp : Exp,
[INFO] [stdout]     |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:109:34
[INFO] [stdout]     |
[INFO] [stdout] 109 |         current_exp_generator : &Fn(&mut Parser, &Token, Exp) -> Result<Exp, String>) -> Result<Exp, String> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 109 |         current_exp_generator : &dyn Fn(&mut Parser, &Token, Exp) -> Result<Exp, String>) -> Result<Exp, String> {
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/scanner.rs:276:9
[INFO] [stdout]     |
[INFO] [stdout] 267 | /             match string.parse::<i64>() {
[INFO] [stdout] 268 | |                 Ok(result) => return Some(TokenType::Literal(Literal::NUMBER(result))),
[INFO] [stdout] 269 | |                 Err(_) => {
[INFO] [stdout] 270 | |                     self.errors.push(format!("Unable to parse number on line {}", self.line));
[INFO] [stdout] 271 | |                     return None
[INFO] [stdout] 272 | |                 }
[INFO] [stdout] 273 | |             }
[INFO] [stdout]     | |_____________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] ...
[INFO] [stdout] 276 |           self.errors.push(format!("Unknown error parsing number on line {}", self.line));
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `character`
[INFO] [stdout]    --> src/scanner.rs:226:13
[INFO] [stdout]     |
[INFO] [stdout] 226 |             character @ '0'..='9' => {
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_character`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/interpreter.rs:40:28
[INFO] [stdout]    |
[INFO] [stdout] 40 |         stmts_success.map(|x| ())
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:106:51
[INFO] [stdout]     |
[INFO] [stdout] 106 |             Token { token_type: TokenType::MINUS, lexeme, line } => {
[INFO] [stdout]     |                                                   ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:106:59
[INFO] [stdout]     |
[INFO] [stdout] 106 |             Token { token_type: TokenType::MINUS, lexeme, line } => {
[INFO] [stdout]     |                                                           ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:110:51
[INFO] [stdout]     |
[INFO] [stdout] 110 |             Token { token_type: TokenType::SLASH, lexeme, line } => {
[INFO] [stdout]     |                                                   ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:110:59
[INFO] [stdout]     |
[INFO] [stdout] 110 |             Token { token_type: TokenType::SLASH, lexeme, line } => {
[INFO] [stdout]     |                                                           ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:114:50
[INFO] [stdout]     |
[INFO] [stdout] 114 |             Token { token_type: TokenType::STAR, lexeme, line } => {
[INFO] [stdout]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:114:58
[INFO] [stdout]     |
[INFO] [stdout] 114 |             Token { token_type: TokenType::STAR, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:118:53
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Token { token_type: TokenType::GREATER, lexeme, line } => {
[INFO] [stdout]     |                                                     ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:118:61
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Token { token_type: TokenType::GREATER, lexeme, line } => {
[INFO] [stdout]     |                                                             ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:122:58
[INFO] [stdout]     |
[INFO] [stdout] 122 |             Token { token_type: TokenType::GreaterEqual, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:122:66
[INFO] [stdout]     |
[INFO] [stdout] 122 |             Token { token_type: TokenType::GreaterEqual, lexeme, line } => {
[INFO] [stdout]     |                                                                  ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:126:50
[INFO] [stdout]     |
[INFO] [stdout] 126 |             Token { token_type: TokenType::LESS, lexeme, line } => {
[INFO] [stdout]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:126:58
[INFO] [stdout]     |
[INFO] [stdout] 126 |             Token { token_type: TokenType::LESS, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:130:55
[INFO] [stdout]     |
[INFO] [stdout] 130 |             Token { token_type: TokenType::LessEqual, lexeme, line } => {
[INFO] [stdout]     |                                                       ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:130:63
[INFO] [stdout]     |
[INFO] [stdout] 130 |             Token { token_type: TokenType::LessEqual, lexeme, line } => {
[INFO] [stdout]     |                                                               ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:134:50
[INFO] [stdout]     |
[INFO] [stdout] 134 |             Token { token_type: TokenType::PLUS, lexeme, line } => {
[INFO] [stdout]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:134:58
[INFO] [stdout]     |
[INFO] [stdout] 134 |             Token { token_type: TokenType::PLUS, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:144:55
[INFO] [stdout]     |
[INFO] [stdout] 144 |             Token { token_type: TokenType::BangEqual, lexeme, line } => {
[INFO] [stdout]     |                                                       ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:144:63
[INFO] [stdout]     |
[INFO] [stdout] 144 |             Token { token_type: TokenType::BangEqual, lexeme, line } => {
[INFO] [stdout]     |                                                               ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:148:56
[INFO] [stdout]     |
[INFO] [stdout] 148 |             Token { token_type: TokenType::EqualEqual, lexeme, line } => {
[INFO] [stdout]     |                                                        ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:148:64
[INFO] [stdout]     |
[INFO] [stdout] 148 |             Token { token_type: TokenType::EqualEqual, lexeme, line } => {
[INFO] [stdout]     |                                                                ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:152:33
[INFO] [stdout]     |
[INFO] [stdout] 152 |             Token { token_type, lexeme, line } =>
[INFO] [stdout]     |                                 ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/interpreter.rs:140:25
[INFO] [stdout]     |
[INFO] [stdout] 140 |                         x => {
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/interpreter.rs:99:21
[INFO] [stdout]    |
[INFO] [stdout] 99 |                     x => {Err("Non-number values not supported with operator -".to_string())},
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l_other`
[INFO] [stdout]    --> src/interpreter.rs:188:13
[INFO] [stdout]     |
[INFO] [stdout] 188 |         (Ok(l_other), Err(r_other)) => Err(r_other),
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_l_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 39 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.49s
[INFO] running `Command { std: "docker" "inspect" "e4cdbe554f74faf33b62aac92218735488e01751d9b5339bda0754d17a10bb84", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e4cdbe554f74faf33b62aac92218735488e01751d9b5339bda0754d17a10bb84", kill_on_drop: false }`
[INFO] [stdout] e4cdbe554f74faf33b62aac92218735488e01751d9b5339bda0754d17a10bb84
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 592c85dbcd4d1130bad42e7b05e20809d87254adf6435853dbcf32671f7dbae2
[INFO] running `Command { std: "docker" "start" "-a" "592c85dbcd4d1130bad42e7b05e20809d87254adf6435853dbcf32671f7dbae2", kill_on_drop: false }`
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/parser.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Identifier`
[INFO] [stdout]  --> src/interpreter.rs:1:68
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ast::{Exp, BinaryExp, GroupingExp, UnaryExp, LiteralExp, Stmt, Identifier};
[INFO] [stdout]   |                                                                    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> src/interpreter.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/interpreter.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ast::Identifier`
[INFO] [stdout]  --> src/environment.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ast::Identifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> src/environment.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/environment.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:26:64
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn instances_to_discriminants<A> (items : &'static [A]) -> Box<Iterator<Item=Discriminant<A>>> {
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn instances_to_discriminants<A> (items : &'static [A]) -> Box<dyn Iterator<Item=Discriminant<A>>> {
[INFO] [stdout]    |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:18:43
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn matches(&self, valid_tokens : &mut Iterator<Item = Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn matches(&self, valid_tokens : &mut dyn Iterator<Item = Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:94:60
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn consume_valid_tokens(&mut self, valid_tokens : &mut Iterator<Item=Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn consume_valid_tokens(&mut self, valid_tokens : &mut dyn Iterator<Item=Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:108:57
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn execute_level(&mut self, valid_tokens : &mut Box<Iterator<Item=Discriminant<TokenType>>>, previous_exp : Exp,
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn execute_level(&mut self, valid_tokens : &mut Box<dyn Iterator<Item=Discriminant<TokenType>>>, previous_exp : Exp,
[INFO] [stdout]     |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:109:34
[INFO] [stdout]     |
[INFO] [stdout] 109 |         current_exp_generator : &Fn(&mut Parser, &Token, Exp) -> Result<Exp, String>) -> Result<Exp, String> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 109 |         current_exp_generator : &dyn Fn(&mut Parser, &Token, Exp) -> Result<Exp, String>) -> Result<Exp, String> {
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/scanner.rs:276:9
[INFO] [stdout]     |
[INFO] [stdout] 267 | /             match string.parse::<i64>() {
[INFO] [stdout] 268 | |                 Ok(result) => return Some(TokenType::Literal(Literal::NUMBER(result))),
[INFO] [stdout] 269 | |                 Err(_) => {
[INFO] [stdout] 270 | |                     self.errors.push(format!("Unable to parse number on line {}", self.line));
[INFO] [stdout] 271 | |                     return None
[INFO] [stdout] 272 | |                 }
[INFO] [stdout] 273 | |             }
[INFO] [stdout]     | |_____________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] ...
[INFO] [stdout] 276 |           self.errors.push(format!("Unknown error parsing number on line {}", self.line));
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `character`
[INFO] [stdout]    --> src/scanner.rs:226:13
[INFO] [stdout]     |
[INFO] [stdout] 226 |             character @ '0'..='9' => {
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_character`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/interpreter.rs:40:28
[INFO] [stdout]    |
[INFO] [stdout] 40 |         stmts_success.map(|x| ())
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:106:51
[INFO] [stdout]     |
[INFO] [stdout] 106 |             Token { token_type: TokenType::MINUS, lexeme, line } => {
[INFO] [stdout]     |                                                   ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:106:59
[INFO] [stdout]     |
[INFO] [stdout] 106 |             Token { token_type: TokenType::MINUS, lexeme, line } => {
[INFO] [stdout]     |                                                           ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:110:51
[INFO] [stdout]     |
[INFO] [stdout] 110 |             Token { token_type: TokenType::SLASH, lexeme, line } => {
[INFO] [stdout]     |                                                   ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:110:59
[INFO] [stdout]     |
[INFO] [stdout] 110 |             Token { token_type: TokenType::SLASH, lexeme, line } => {
[INFO] [stdout]     |                                                           ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:114:50
[INFO] [stdout]     |
[INFO] [stdout] 114 |             Token { token_type: TokenType::STAR, lexeme, line } => {
[INFO] [stdout]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:114:58
[INFO] [stdout]     |
[INFO] [stdout] 114 |             Token { token_type: TokenType::STAR, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:118:53
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Token { token_type: TokenType::GREATER, lexeme, line } => {
[INFO] [stdout]     |                                                     ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:118:61
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Token { token_type: TokenType::GREATER, lexeme, line } => {
[INFO] [stdout]     |                                                             ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:122:58
[INFO] [stdout]     |
[INFO] [stdout] 122 |             Token { token_type: TokenType::GreaterEqual, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:122:66
[INFO] [stdout]     |
[INFO] [stdout] 122 |             Token { token_type: TokenType::GreaterEqual, lexeme, line } => {
[INFO] [stdout]     |                                                                  ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:126:50
[INFO] [stdout]     |
[INFO] [stdout] 126 |             Token { token_type: TokenType::LESS, lexeme, line } => {
[INFO] [stdout]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:126:58
[INFO] [stdout]     |
[INFO] [stdout] 126 |             Token { token_type: TokenType::LESS, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:130:55
[INFO] [stdout]     |
[INFO] [stdout] 130 |             Token { token_type: TokenType::LessEqual, lexeme, line } => {
[INFO] [stdout]     |                                                       ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:130:63
[INFO] [stdout]     |
[INFO] [stdout] 130 |             Token { token_type: TokenType::LessEqual, lexeme, line } => {
[INFO] [stdout]     |                                                               ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:134:50
[INFO] [stdout]     |
[INFO] [stdout] 134 |             Token { token_type: TokenType::PLUS, lexeme, line } => {
[INFO] [stdout]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:134:58
[INFO] [stdout]     |
[INFO] [stdout] 134 |             Token { token_type: TokenType::PLUS, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:144:55
[INFO] [stdout]     |
[INFO] [stdout] 144 |             Token { token_type: TokenType::BangEqual, lexeme, line } => {
[INFO] [stdout]     |                                                       ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:144:63
[INFO] [stdout]     |
[INFO] [stdout] 144 |             Token { token_type: TokenType::BangEqual, lexeme, line } => {
[INFO] [stdout]     |                                                               ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:148:56
[INFO] [stdout]     |
[INFO] [stdout] 148 |             Token { token_type: TokenType::EqualEqual, lexeme, line } => {
[INFO] [stdout]     |                                                        ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:148:64
[INFO] [stdout]     |
[INFO] [stdout] 148 |             Token { token_type: TokenType::EqualEqual, lexeme, line } => {
[INFO] [stdout]     |                                                                ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling loxrust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:152:33
[INFO] [stdout]     |
[INFO] [stdout] 152 |             Token { token_type, lexeme, line } =>
[INFO] [stdout]     |                                 ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/interpreter.rs:140:25
[INFO] [stdout]     |
[INFO] [stdout] 140 |                         x => {
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/interpreter.rs:99:21
[INFO] [stdout]    |
[INFO] [stdout] 99 |                     x => {Err("Non-number values not supported with operator -".to_string())},
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l_other`
[INFO] [stdout]    --> src/interpreter.rs:188:13
[INFO] [stdout]     |
[INFO] [stdout] 188 |         (Ok(l_other), Err(r_other)) => Err(r_other),
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_l_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 39 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/parser.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 7 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Identifier`
[INFO] [stdout]  --> src/interpreter.rs:1:68
[INFO] [stdout]   |
[INFO] [stdout] 1 | use ast::{Exp, BinaryExp, GroupingExp, UnaryExp, LiteralExp, Stmt, Identifier};
[INFO] [stdout]   |                                                                    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::iter::FromIterator`
[INFO] [stdout]  --> src/interpreter.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::iter::FromIterator;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/interpreter.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `ast::Identifier`
[INFO] [stdout]  --> src/environment.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use ast::Identifier;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::convert::TryInto`
[INFO] [stdout]  --> src/environment.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::convert::TryInto;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::borrow::Borrow`
[INFO] [stdout]  --> src/environment.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::borrow::Borrow;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:26:64
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn instances_to_discriminants<A> (items : &'static [A]) -> Box<Iterator<Item=Discriminant<A>>> {
[INFO] [stdout]    |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 26 | fn instances_to_discriminants<A> (items : &'static [A]) -> Box<dyn Iterator<Item=Discriminant<A>>> {
[INFO] [stdout]    |                                                                +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:18:43
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn matches(&self, valid_tokens : &mut Iterator<Item = Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn matches(&self, valid_tokens : &mut dyn Iterator<Item = Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                           +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/parser.rs:94:60
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn consume_valid_tokens(&mut self, valid_tokens : &mut Iterator<Item=Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 94 |     fn consume_valid_tokens(&mut self, valid_tokens : &mut dyn Iterator<Item=Discriminant<TokenType>>) -> bool {
[INFO] [stdout]    |                                                            +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:108:57
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn execute_level(&mut self, valid_tokens : &mut Box<Iterator<Item=Discriminant<TokenType>>>, previous_exp : Exp,
[INFO] [stdout]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 108 |     fn execute_level(&mut self, valid_tokens : &mut Box<dyn Iterator<Item=Discriminant<TokenType>>>, previous_exp : Exp,
[INFO] [stdout]     |                                                         +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/parser.rs:109:34
[INFO] [stdout]     |
[INFO] [stdout] 109 |         current_exp_generator : &Fn(&mut Parser, &Token, Exp) -> Result<Exp, String>) -> Result<Exp, String> {
[INFO] [stdout]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]     |
[INFO] [stdout] 109 |         current_exp_generator : &dyn Fn(&mut Parser, &Token, Exp) -> Result<Exp, String>) -> Result<Exp, String> {
[INFO] [stdout]     |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]    --> src/scanner.rs:276:9
[INFO] [stdout]     |
[INFO] [stdout] 267 | /             match string.parse::<i64>() {
[INFO] [stdout] 268 | |                 Ok(result) => return Some(TokenType::Literal(Literal::NUMBER(result))),
[INFO] [stdout] 269 | |                 Err(_) => {
[INFO] [stdout] 270 | |                     self.errors.push(format!("Unable to parse number on line {}", self.line));
[INFO] [stdout] 271 | |                     return None
[INFO] [stdout] 272 | |                 }
[INFO] [stdout] 273 | |             }
[INFO] [stdout]     | |_____________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] ...
[INFO] [stdout] 276 |           self.errors.push(format!("Unknown error parsing number on line {}", self.line));
[INFO] [stdout]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `character`
[INFO] [stdout]    --> src/scanner.rs:226:13
[INFO] [stdout]     |
[INFO] [stdout] 226 |             character @ '0'..='9' => {
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_character`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/interpreter.rs:40:28
[INFO] [stdout]    |
[INFO] [stdout] 40 |         stmts_success.map(|x| ())
[INFO] [stdout]    |                            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:106:51
[INFO] [stdout]     |
[INFO] [stdout] 106 |             Token { token_type: TokenType::MINUS, lexeme, line } => {
[INFO] [stdout]     |                                                   ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:106:59
[INFO] [stdout]     |
[INFO] [stdout] 106 |             Token { token_type: TokenType::MINUS, lexeme, line } => {
[INFO] [stdout]     |                                                           ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:110:51
[INFO] [stdout]     |
[INFO] [stdout] 110 |             Token { token_type: TokenType::SLASH, lexeme, line } => {
[INFO] [stdout]     |                                                   ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:110:59
[INFO] [stdout]     |
[INFO] [stdout] 110 |             Token { token_type: TokenType::SLASH, lexeme, line } => {
[INFO] [stdout]     |                                                           ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:114:50
[INFO] [stdout]     |
[INFO] [stdout] 114 |             Token { token_type: TokenType::STAR, lexeme, line } => {
[INFO] [stdout]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:114:58
[INFO] [stdout]     |
[INFO] [stdout] 114 |             Token { token_type: TokenType::STAR, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:118:53
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Token { token_type: TokenType::GREATER, lexeme, line } => {
[INFO] [stdout]     |                                                     ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:118:61
[INFO] [stdout]     |
[INFO] [stdout] 118 |             Token { token_type: TokenType::GREATER, lexeme, line } => {
[INFO] [stdout]     |                                                             ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:122:58
[INFO] [stdout]     |
[INFO] [stdout] 122 |             Token { token_type: TokenType::GreaterEqual, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:122:66
[INFO] [stdout]     |
[INFO] [stdout] 122 |             Token { token_type: TokenType::GreaterEqual, lexeme, line } => {
[INFO] [stdout]     |                                                                  ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:126:50
[INFO] [stdout]     |
[INFO] [stdout] 126 |             Token { token_type: TokenType::LESS, lexeme, line } => {
[INFO] [stdout]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:126:58
[INFO] [stdout]     |
[INFO] [stdout] 126 |             Token { token_type: TokenType::LESS, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:130:55
[INFO] [stdout]     |
[INFO] [stdout] 130 |             Token { token_type: TokenType::LessEqual, lexeme, line } => {
[INFO] [stdout]     |                                                       ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:130:63
[INFO] [stdout]     |
[INFO] [stdout] 130 |             Token { token_type: TokenType::LessEqual, lexeme, line } => {
[INFO] [stdout]     |                                                               ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:134:50
[INFO] [stdout]     |
[INFO] [stdout] 134 |             Token { token_type: TokenType::PLUS, lexeme, line } => {
[INFO] [stdout]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:134:58
[INFO] [stdout]     |
[INFO] [stdout] 134 |             Token { token_type: TokenType::PLUS, lexeme, line } => {
[INFO] [stdout]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:144:55
[INFO] [stdout]     |
[INFO] [stdout] 144 |             Token { token_type: TokenType::BangEqual, lexeme, line } => {
[INFO] [stdout]     |                                                       ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:144:63
[INFO] [stdout]     |
[INFO] [stdout] 144 |             Token { token_type: TokenType::BangEqual, lexeme, line } => {
[INFO] [stdout]     |                                                               ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:148:56
[INFO] [stdout]     |
[INFO] [stdout] 148 |             Token { token_type: TokenType::EqualEqual, lexeme, line } => {
[INFO] [stdout]     |                                                        ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `line`
[INFO] [stdout]    --> src/interpreter.rs:148:64
[INFO] [stdout]     |
[INFO] [stdout] 148 |             Token { token_type: TokenType::EqualEqual, lexeme, line } => {
[INFO] [stdout]     |                                                                ^^^^ help: try ignoring the field: `line: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `lexeme`
[INFO] [stdout]    --> src/interpreter.rs:152:33
[INFO] [stdout]     |
[INFO] [stdout] 152 |             Token { token_type, lexeme, line } =>
[INFO] [stdout]     |                                 ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]    --> src/interpreter.rs:140:25
[INFO] [stdout]     |
[INFO] [stdout] 140 |                         x => {
[INFO] [stdout]     |                         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `x`
[INFO] [stdout]   --> src/interpreter.rs:99:21
[INFO] [stdout]    |
[INFO] [stdout] 99 |                     x => {Err("Non-number values not supported with operator -".to_string())},
[INFO] [stdout]    |                     ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `l_other`
[INFO] [stdout]    --> src/interpreter.rs:188:13
[INFO] [stdout]     |
[INFO] [stdout] 188 |         (Ok(l_other), Err(r_other)) => Err(r_other),
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_l_other`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/parser.rs:295:32
[INFO] [stdout]     |
[INFO] [stdout] 295 |             Err(err) => panic!(err)
[INFO] [stdout]     |                                ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 295 |             Err(err) => panic!("{}", err)
[INFO] [stdout]     |                                +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: panic message is not a string literal
[INFO] [stdout]    --> src/parser.rs:332:32
[INFO] [stdout]     |
[INFO] [stdout] 332 |             Err(err) => panic!(err)
[INFO] [stdout]     |                                ^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stdout] help: add a "{}" format string to `Display` the message
[INFO] [stdout]     |
[INFO] [stdout] 332 |             Err(err) => panic!("{}", err)
[INFO] [stdout]     |                                +++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 41 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `Command { std: "docker" "inspect" "592c85dbcd4d1130bad42e7b05e20809d87254adf6435853dbcf32671f7dbae2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "592c85dbcd4d1130bad42e7b05e20809d87254adf6435853dbcf32671f7dbae2", kill_on_drop: false }`
[INFO] [stdout] 592c85dbcd4d1130bad42e7b05e20809d87254adf6435853dbcf32671f7dbae2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2024-02-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] dc2817e6e466dc84f7547a5bc4ab3039254b6dc44c13924536715e5d4e896a60
[INFO] running `Command { std: "docker" "start" "-a" "dc2817e6e466dc84f7547a5bc4ab3039254b6dc44c13924536715e5d4e896a60", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `std::borrow::Borrow`
[INFO] [stderr]  --> src/parser.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 | use std::borrow::Borrow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Identifier`
[INFO] [stderr]  --> src/interpreter.rs:1:68
[INFO] [stderr]   |
[INFO] [stderr] 1 | use ast::{Exp, BinaryExp, GroupingExp, UnaryExp, LiteralExp, Stmt, Identifier};
[INFO] [stderr]   |                                                                    ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter::FromIterator`
[INFO] [stderr]  --> src/interpreter.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::iter::FromIterator;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Borrow`
[INFO] [stderr]  --> src/interpreter.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::borrow::Borrow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `ast::Identifier`
[INFO] [stderr]  --> src/environment.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use ast::Identifier;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::convert::TryInto`
[INFO] [stderr]  --> src/environment.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::convert::TryInto;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::borrow::Borrow`
[INFO] [stderr]  --> src/environment.rs:5:5
[INFO] [stderr]   |
[INFO] [stderr] 5 | use std::borrow::Borrow;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser.rs:26:64
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn instances_to_discriminants<A> (items : &'static [A]) -> Box<Iterator<Item=Discriminant<A>>> {
[INFO] [stderr]    |                                                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 26 | fn instances_to_discriminants<A> (items : &'static [A]) -> Box<dyn Iterator<Item=Discriminant<A>>> {
[INFO] [stderr]    |                                                                +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser.rs:18:43
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn matches(&self, valid_tokens : &mut Iterator<Item = Discriminant<TokenType>>) -> bool {
[INFO] [stderr]    |                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 18 |     fn matches(&self, valid_tokens : &mut dyn Iterator<Item = Discriminant<TokenType>>) -> bool {
[INFO] [stderr]    |                                           +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser.rs:94:60
[INFO] [stderr]    |
[INFO] [stderr] 94 |     fn consume_valid_tokens(&mut self, valid_tokens : &mut Iterator<Item=Discriminant<TokenType>>) -> bool {
[INFO] [stderr]    |                                                            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 94 |     fn consume_valid_tokens(&mut self, valid_tokens : &mut dyn Iterator<Item=Discriminant<TokenType>>) -> bool {
[INFO] [stderr]    |                                                            +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser.rs:108:57
[INFO] [stderr]     |
[INFO] [stderr] 108 |     fn execute_level(&mut self, valid_tokens : &mut Box<Iterator<Item=Discriminant<TokenType>>>, previous_exp : Exp,
[INFO] [stderr]     |                                                         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 108 |     fn execute_level(&mut self, valid_tokens : &mut Box<dyn Iterator<Item=Discriminant<TokenType>>>, previous_exp : Exp,
[INFO] [stderr]     |                                                         +++
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/parser.rs:109:34
[INFO] [stderr]     |
[INFO] [stderr] 109 |         current_exp_generator : &Fn(&mut Parser, &Token, Exp) -> Result<Exp, String>) -> Result<Exp, String> {
[INFO] [stderr]     |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr] help: use `dyn`
[INFO] [stderr]     |
[INFO] [stderr] 109 |         current_exp_generator : &dyn Fn(&mut Parser, &Token, Exp) -> Result<Exp, String>) -> Result<Exp, String> {
[INFO] [stderr]     |                                  +++
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]    --> src/scanner.rs:276:9
[INFO] [stderr]     |
[INFO] [stderr] 267 | /             match string.parse::<i64>() {
[INFO] [stderr] 268 | |                 Ok(result) => return Some(TokenType::Literal(Literal::NUMBER(result))),
[INFO] [stderr] 269 | |                 Err(_) => {
[INFO] [stderr] 270 | |                     self.errors.push(format!("Unable to parse number on line {}", self.line));
[INFO] [stderr] 271 | |                     return None
[INFO] [stderr] 272 | |                 }
[INFO] [stderr] 273 | |             }
[INFO] [stderr]     | |_____________- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stderr] ...
[INFO] [stderr] 276 |           self.errors.push(format!("Unknown error parsing number on line {}", self.line));
[INFO] [stderr]     |           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `character`
[INFO] [stderr]    --> src/scanner.rs:226:13
[INFO] [stderr]     |
[INFO] [stderr] 226 |             character @ '0'..='9' => {
[INFO] [stderr]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_character`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/interpreter.rs:40:28
[INFO] [stderr]    |
[INFO] [stderr] 40 |         stmts_success.map(|x| ())
[INFO] [stderr]    |                            ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:106:51
[INFO] [stderr]     |
[INFO] [stderr] 106 |             Token { token_type: TokenType::MINUS, lexeme, line } => {
[INFO] [stderr]     |                                                   ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:106:59
[INFO] [stderr]     |
[INFO] [stderr] 106 |             Token { token_type: TokenType::MINUS, lexeme, line } => {
[INFO] [stderr]     |                                                           ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:110:51
[INFO] [stderr]     |
[INFO] [stderr] 110 |             Token { token_type: TokenType::SLASH, lexeme, line } => {
[INFO] [stderr]     |                                                   ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:110:59
[INFO] [stderr]     |
[INFO] [stderr] 110 |             Token { token_type: TokenType::SLASH, lexeme, line } => {
[INFO] [stderr]     |                                                           ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:114:50
[INFO] [stderr]     |
[INFO] [stderr] 114 |             Token { token_type: TokenType::STAR, lexeme, line } => {
[INFO] [stderr]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:114:58
[INFO] [stderr]     |
[INFO] [stderr] 114 |             Token { token_type: TokenType::STAR, lexeme, line } => {
[INFO] [stderr]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:118:53
[INFO] [stderr]     |
[INFO] [stderr] 118 |             Token { token_type: TokenType::GREATER, lexeme, line } => {
[INFO] [stderr]     |                                                     ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:118:61
[INFO] [stderr]     |
[INFO] [stderr] 118 |             Token { token_type: TokenType::GREATER, lexeme, line } => {
[INFO] [stderr]     |                                                             ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:122:58
[INFO] [stderr]     |
[INFO] [stderr] 122 |             Token { token_type: TokenType::GreaterEqual, lexeme, line } => {
[INFO] [stderr]     |                                                          ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:122:66
[INFO] [stderr]     |
[INFO] [stderr] 122 |             Token { token_type: TokenType::GreaterEqual, lexeme, line } => {
[INFO] [stderr]     |                                                                  ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:126:50
[INFO] [stderr]     |
[INFO] [stderr] 126 |             Token { token_type: TokenType::LESS, lexeme, line } => {
[INFO] [stderr]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:126:58
[INFO] [stderr]     |
[INFO] [stderr] 126 |             Token { token_type: TokenType::LESS, lexeme, line } => {
[INFO] [stderr]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:130:55
[INFO] [stderr]     |
[INFO] [stderr] 130 |             Token { token_type: TokenType::LessEqual, lexeme, line } => {
[INFO] [stderr]     |                                                       ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:130:63
[INFO] [stderr]     |
[INFO] [stderr] 130 |             Token { token_type: TokenType::LessEqual, lexeme, line } => {
[INFO] [stderr]     |                                                               ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:134:50
[INFO] [stderr]     |
[INFO] [stderr] 134 |             Token { token_type: TokenType::PLUS, lexeme, line } => {
[INFO] [stderr]     |                                                  ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:134:58
[INFO] [stderr]     |
[INFO] [stderr] 134 |             Token { token_type: TokenType::PLUS, lexeme, line } => {
[INFO] [stderr]     |                                                          ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:144:55
[INFO] [stderr]     |
[INFO] [stderr] 144 |             Token { token_type: TokenType::BangEqual, lexeme, line } => {
[INFO] [stderr]     |                                                       ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:144:63
[INFO] [stderr]     |
[INFO] [stderr] 144 |             Token { token_type: TokenType::BangEqual, lexeme, line } => {
[INFO] [stderr]     |                                                               ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:148:56
[INFO] [stderr]     |
[INFO] [stderr] 148 |             Token { token_type: TokenType::EqualEqual, lexeme, line } => {
[INFO] [stderr]     |                                                        ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `line`
[INFO] [stderr]    --> src/interpreter.rs:148:64
[INFO] [stderr]     |
[INFO] [stderr] 148 |             Token { token_type: TokenType::EqualEqual, lexeme, line } => {
[INFO] [stderr]     |                                                                ^^^^ help: try ignoring the field: `line: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lexeme`
[INFO] [stderr]    --> src/interpreter.rs:152:33
[INFO] [stderr]     |
[INFO] [stderr] 152 |             Token { token_type, lexeme, line } =>
[INFO] [stderr]     |                                 ^^^^^^ help: try ignoring the field: `lexeme: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/interpreter.rs:140:25
[INFO] [stderr]     |
[INFO] [stderr] 140 |                         x => {
[INFO] [stderr]     |                         ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]   --> src/interpreter.rs:99:21
[INFO] [stderr]    |
[INFO] [stderr] 99 |                     x => {Err("Non-number values not supported with operator -".to_string())},
[INFO] [stderr]    |                     ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `l_other`
[INFO] [stderr]    --> src/interpreter.rs:188:13
[INFO] [stderr]     |
[INFO] [stderr] 188 |         (Ok(l_other), Err(r_other)) => Err(r_other),
[INFO] [stderr]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_l_other`
[INFO] [stderr] 
[INFO] [stderr] warning: `loxrust` (lib) generated 39 warnings (run `cargo fix --lib -p loxrust` to apply 38 suggestions)
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/parser.rs:295:32
[INFO] [stderr]     |
[INFO] [stderr] 295 |             Err(err) => panic!(err)
[INFO] [stderr]     |                                ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr]     = note: `#[warn(non_fmt_panics)]` on by default
[INFO] [stderr] help: add a "{}" format string to `Display` the message
[INFO] [stderr]     |
[INFO] [stderr] 295 |             Err(err) => panic!("{}", err)
[INFO] [stderr]     |                                +++++
[INFO] [stderr] 
[INFO] [stderr] warning: panic message is not a string literal
[INFO] [stderr]    --> src/parser.rs:332:32
[INFO] [stderr]     |
[INFO] [stderr] 332 |             Err(err) => panic!(err)
[INFO] [stderr]     |                                ^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this usage of `panic!()` is deprecated; it will be a hard error in Rust 2021
[INFO] [stderr]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/panic-macro-consistency.html>
[INFO] [stderr] help: add a "{}" format string to `Display` the message
[INFO] [stderr]     |
[INFO] [stderr] 332 |             Err(err) => panic!("{}", err)
[INFO] [stderr]     |                                +++++
[INFO] [stderr] 
[INFO] [stderr] warning: `loxrust` (lib test) generated 41 warnings (39 duplicates) (run `cargo fix --lib -p loxrust --tests` to apply 2 suggestions)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/loxrust-d27adaf0ad642285)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test parser::tests::parse_expresion_with_brackets ... ok
[INFO] [stdout] test parser::tests::parse_valid_example_expression ... ok
[INFO] [stdout] test scanner::tests::equals_statement ... ok
[INFO] [stdout] test scanner::tests::scan_string ... ok
[INFO] [stdout] test scanner::tests::statement_with_brackets ... ok
[INFO] [stdout] test ast::tests::ast_printer_simple ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- ast::tests::ast_printer_simple stdout ----
[INFO] [stdout] thread 'ast::tests::ast_printer_simple' panicked at src/ast.rs:156:9:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: "(== (group foobar) 2);"
[INFO] [stdout]  right: "(== (group foobar) 2)"
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55831a41a636 - std::backtrace_rs::backtrace::libunwind::trace::h140b6deb6a45c671
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5
[INFO] [stdout]    1:     0x55831a41a636 - std::backtrace_rs::backtrace::trace_unsynchronized::h8450d7e4e9219aed
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55831a41a636 - std::sys_common::backtrace::_print_fmt::hbd28e5e6c6fc3a3f
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55831a41a636 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hb058f285768cf98e
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55831a4435c0 - core::fmt::rt::Argument::fmt::h87dec7a95127da24
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/fmt/rt.rs:142:9
[INFO] [stdout]    5:     0x55831a4435c0 - core::fmt::write::h873f89a91a4832db
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/fmt/mod.rs:1120:17
[INFO] [stdout]    6:     0x55831a417e8f - std::io::Write::write_fmt::h90f651e9e694a4bb
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/io/mod.rs:1846:15
[INFO] [stdout]    7:     0x55831a41a414 - std::sys_common::backtrace::_print::h7719d1529d9a9e13
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55831a41a414 - std::sys_common::backtrace::print::haa3afbd0e7947108
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55831a41c187 - std::panicking::default_hook::{{closure}}::h10e3de2ec0eaff22
[INFO] [stdout]   10:     0x55831a41be6d - std::panicking::default_hook::hbdc1b1b7fe073dab
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:289:9
[INFO] [stdout]   11:     0x55831a3ea717 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h20f7887d7cd0a330
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   12:     0x55831a3ea717 - test::test_main::{{closure}}::hc125a615957b5cb1
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/test/src/lib.rs:138:21
[INFO] [stdout]   13:     0x55831a41c7a6 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h8c19e0590f8443c4
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/alloc/src/boxed.rs:2029:9
[INFO] [stdout]   14:     0x55831a41c7a6 - std::panicking::rust_panic_with_hook::hb81692602460473d
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:785:13
[INFO] [stdout]   15:     0x55831a41c4f2 - std::panicking::begin_panic_handler::{{closure}}::h2470593aa2678e9c
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:659:13
[INFO] [stdout]   16:     0x55831a41ab36 - std::sys_common::backtrace::__rust_end_short_backtrace::h560bb50225b0562b
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x55831a41c244 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:647:5
[INFO] [stdout]   18:     0x55831a3a0775 - core::panicking::panic_fmt::h29b6f262f6458dc3
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55831a3a0bab - core::panicking::assert_failed_inner::h2c4dd574e44796db
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/panicking.rs:342:17
[INFO] [stdout]   20:     0x55831a3a803e - core::panicking::assert_failed::hb4c581ac58c2a335
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/panicking.rs:297:5
[INFO] [stdout]   21:     0x55831a3afdaf - loxrust::ast::tests::ast_printer_simple::hcf6c5ce5176268ea
[INFO] [stdout]                                at /opt/rustwide/workdir/src/ast.rs:156:9
[INFO] [stdout]   22:     0x55831a3af7b7 - loxrust::ast::tests::ast_printer_simple::{{closure}}::h8ca7200d1e401ae2
[INFO] [stdout]                                at /opt/rustwide/workdir/src/ast.rs:136:28
[INFO] [stdout]   23:     0x55831a3b2796 - core::ops::function::FnOnce::call_once::h60931ed70344313f
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x55831a3f030f - core::ops::function::FnOnce::call_once::h692fe6f34484199f
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55831a3f030f - test::__rust_begin_short_backtrace::h48b62e76bd60e2de
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/test/src/lib.rs:621:18
[INFO] [stdout]   26:     0x55831a3ef131 - test::run_test_in_process::{{closure}}::h1c68597526ef43db
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/test/src/lib.rs:644:60
[INFO] [stdout]   27:     0x55831a3ef131 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hcae98092997f976b
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x55831a3ef131 - std::panicking::try::do_call::h8d1548c2f5bb535a
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:554:40
[INFO] [stdout]   29:     0x55831a3ef131 - std::panicking::try::hbb7a2054f484688e
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:518:19
[INFO] [stdout]   30:     0x55831a3ef131 - std::panic::catch_unwind::h696d12d9d80497c2
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panic.rs:142:14
[INFO] [stdout]   31:     0x55831a3ef131 - test::run_test_in_process::h053367a7217c825b
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/test/src/lib.rs:644:27
[INFO] [stdout]   32:     0x55831a3ef131 - test::run_test::{{closure}}::hfa524e9fabcba78e
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/test/src/lib.rs:567:43
[INFO] [stdout]   33:     0x55831a3b6596 - test::run_test::{{closure}}::h2c4d0bb741ef7f9f
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/test/src/lib.rs:595:41
[INFO] [stdout]   34:     0x55831a3b6596 - std::sys_common::backtrace::__rust_begin_short_backtrace::h0d2c708415550075
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   35:     0x55831a3bb557 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h76e2635840d7293f
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/thread/mod.rs:529:17
[INFO] [stdout]   36:     0x55831a3bb557 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::haa640b67a810a214
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x55831a3bb557 - std::panicking::try::do_call::h41892e3bc2807ab5
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:554:40
[INFO] [stdout]   38:     0x55831a3bb557 - std::panicking::try::h861a16d180681c80
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panicking.rs:518:19
[INFO] [stdout]   39:     0x55831a3bb557 - std::panic::catch_unwind::h8195f9064b1509fa
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/panic.rs:142:14
[INFO] [stdout]   40:     0x55831a3bb557 - std::thread::Builder::spawn_unchecked_::{{closure}}::h73cc419da1217371
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/thread/mod.rs:528:30
[INFO] [stdout]   41:     0x55831a3bb557 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h79dc6499ff073b09
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x55831a420b45 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::ha718e8cdc51a5182
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   43:     0x55831a420b45 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h86072abc877c5474
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/alloc/src/boxed.rs:2015:9
[INFO] [stdout]   44:     0x55831a420b45 - std::sys::pal::unix::thread::Thread::new::thread_start::hac4056197c365894
[INFO] [stdout]                                at /rustc/f2048098a1ca42a520e7bed68e321a66edc0a1b1/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7f9b55245ac3 - <unknown>
[INFO] [stdout]   46:     0x7f9b552d6bf4 - __clone
[INFO] [stdout]   47:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     ast::tests::ast_printer_simple
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 5 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.01s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "dc2817e6e466dc84f7547a5bc4ab3039254b6dc44c13924536715e5d4e896a60", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dc2817e6e466dc84f7547a5bc4ab3039254b6dc44c13924536715e5d4e896a60", kill_on_drop: false }`
[INFO] [stdout] dc2817e6e466dc84f7547a5bc4ab3039254b6dc44c13924536715e5d4e896a60
