[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 master#1871252fc8bb672d40787e67404e6eaae7059369 for pr-125151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcon%2Fcraftinginterpreters-rust" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mcon/craftinginterpreters-rust on toolchain 1871252fc8bb672d40787e67404e6eaae7059369
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "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-1-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" "+1871252fc8bb672d40787e67404e6eaae7059369" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5cd72f9049c92617544c1d6daf9d2c4f13750addf3a5af925f6617054b712d62
[INFO] running `Command { std: "docker" "start" "-a" "5cd72f9049c92617544c1d6daf9d2c4f13750addf3a5af925f6617054b712d62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5cd72f9049c92617544c1d6daf9d2c4f13750addf3a5af925f6617054b712d62", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5cd72f9049c92617544c1d6daf9d2c4f13750addf3a5af925f6617054b712d62", kill_on_drop: false }`
[INFO] [stdout] 5cd72f9049c92617544c1d6daf9d2c4f13750addf3a5af925f6617054b712d62
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9d5a3c0d480509c8ffcaa96fab1d7f47f35c82af9e066694a15fce541150087
[INFO] running `Command { std: "docker" "start" "-a" "d9d5a3c0d480509c8ffcaa96fab1d7f47f35c82af9e066694a15fce541150087", 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: if this is an object-safe trait, 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: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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: 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: if this is an object-safe trait, 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: 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` profile [unoptimized + debuginfo] target(s) in 1.84s
[INFO] running `Command { std: "docker" "inspect" "d9d5a3c0d480509c8ffcaa96fab1d7f47f35c82af9e066694a15fce541150087", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9d5a3c0d480509c8ffcaa96fab1d7f47f35c82af9e066694a15fce541150087", kill_on_drop: false }`
[INFO] [stdout] d9d5a3c0d480509c8ffcaa96fab1d7f47f35c82af9e066694a15fce541150087
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e6e507d114fbac12614ae6b9ce87ae4f6cd42c50d0e654fd9cd76d6eea46d28b
[INFO] running `Command { std: "docker" "start" "-a" "e6e507d114fbac12614ae6b9ce87ae4f6cd42c50d0e654fd9cd76d6eea46d28b", 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: if this is an object-safe trait, 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: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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: 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: if this is an object-safe trait, 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: 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]    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: if this is an object-safe trait, 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: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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: 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: if this is an object-safe trait, 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: 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` profile [unoptimized + debuginfo] target(s) in 0.42s
[INFO] running `Command { std: "docker" "inspect" "e6e507d114fbac12614ae6b9ce87ae4f6cd42c50d0e654fd9cd76d6eea46d28b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e6e507d114fbac12614ae6b9ce87ae4f6cd42c50d0e654fd9cd76d6eea46d28b", kill_on_drop: false }`
[INFO] [stdout] e6e507d114fbac12614ae6b9ce87ae4f6cd42c50d0e654fd9cd76d6eea46d28b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+1871252fc8bb672d40787e67404e6eaae7059369" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9229f5531ce42e432dcae155108f664cbdab800ecb9cfdccb7daf91b926e0071
[INFO] running `Command { std: "docker" "start" "-a" "9229f5531ce42e432dcae155108f664cbdab800ecb9cfdccb7daf91b926e0071", 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: if this is an object-safe trait, 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: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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: 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: if this is an object-safe trait, 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: 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 12 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` profile [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/loxrust-21c6f5a7c1d5863f)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[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 parser::tests::parse_expresion_with_brackets ... 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:     0x55abc74bdcd5 - std::backtrace_rs::backtrace::libunwind::trace::h59d96bdb08384354
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
[INFO] [stdout]    1:     0x55abc74bdcd5 - std::backtrace_rs::backtrace::trace_unsynchronized::h9cf5becacfc93fba
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55abc74bdcd5 - std::sys_common::backtrace::_print_fmt::h10b76d10405dbd48
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55abc74bdcd5 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h6ed9e62a156d84e4
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55abc74e458b - core::fmt::rt::Argument::fmt::h645c680983f03c9f
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/fmt/rt.rs:165:63
[INFO] [stdout]    5:     0x55abc74e458b - core::fmt::write::h8bcd80919a02be29
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/fmt/mod.rs:1169:21
[INFO] [stdout]    6:     0x55abc74bb50f - std::io::Write::write_fmt::h8d0c47c662cad79c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/io/mod.rs:1835:15
[INFO] [stdout]    7:     0x55abc74bdaae - std::sys_common::backtrace::_print::h6306f131a28d62b0
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55abc74bdaae - std::sys_common::backtrace::print::h7079288e0a26dfcc
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55abc74bf4d9 - std::panicking::default_hook::{{closure}}::hb063ecec81a736ba
[INFO] [stdout]   10:     0x55abc74bf19e - std::panicking::default_hook::hd56ee406bf547b5c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:295:9
[INFO] [stdout]   11:     0x55abc748eada - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::he5eacdef44c8728f
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/alloc/src/boxed.rs:2036:9
[INFO] [stdout]   12:     0x55abc748eada - test::test_main::{{closure}}::h0ec9aed229e79095
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x55abc74bfadb - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hcbd0d80e1ad4e4f9
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/alloc/src/boxed.rs:2036:9
[INFO] [stdout]   14:     0x55abc74bfadb - std::panicking::rust_panic_with_hook::h624aa3ca42ebb8f2
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:799:13
[INFO] [stdout]   15:     0x55abc74bf854 - std::panicking::begin_panic_handler::{{closure}}::hbc4e76194a5e287c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:664:13
[INFO] [stdout]   16:     0x55abc74be199 - std::sys_common::backtrace::__rust_end_short_backtrace::h847fedc9d1ff7b6d
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x55abc74bf587 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:652:5
[INFO] [stdout]   18:     0x55abc7445843 - core::panicking::panic_fmt::hec11a924b87ce965
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55abc7445c2e - core::panicking::assert_failed_inner::h01c8f7f0c1caba58
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/panicking.rs:408:17
[INFO] [stdout]   20:     0x55abc744ef3e - core::panicking::assert_failed::he89c9eb1e97e71cd
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/panicking.rs:363:5
[INFO] [stdout]   21:     0x55abc7450cc4 - loxrust::ast::tests::ast_printer_simple::h464cf00184d729a8
[INFO] [stdout]                                at /opt/rustwide/workdir/src/ast.rs:156:9
[INFO] [stdout]   22:     0x55abc7450707 - loxrust::ast::tests::ast_printer_simple::{{closure}}::h1e3db14e27ff20b3
[INFO] [stdout]                                at /opt/rustwide/workdir/src/ast.rs:136:28
[INFO] [stdout]   23:     0x55abc744d396 - core::ops::function::FnOnce::call_once::h850fbaacbf19ecf6
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x55abc74934bb - core::ops::function::FnOnce::call_once::h2e43a8f6f3d94b99
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55abc74934bb - test::__rust_begin_short_backtrace::h214c9f2d2d3fee90
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:625:18
[INFO] [stdout]   26:     0x55abc7492bc1 - test::run_test_in_process::{{closure}}::h510b7ba7990692a5
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:648:60
[INFO] [stdout]   27:     0x55abc7492bc1 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h4157186197a93871
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x55abc7492bc1 - std::panicking::try::do_call::h1bf2463bccd4b28c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:559:40
[INFO] [stdout]   29:     0x55abc7492bc1 - std::panicking::try::hd6d4808c9fab4fa5
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:523:19
[INFO] [stdout]   30:     0x55abc7492bc1 - std::panic::catch_unwind::hd5641d97d123f9f2
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panic.rs:149:14
[INFO] [stdout]   31:     0x55abc7492bc1 - test::run_test_in_process::hc273b71c8b878a4c
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:648:27
[INFO] [stdout]   32:     0x55abc7492bc1 - test::run_test::{{closure}}::h6838df834eb8467e
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:569:43
[INFO] [stdout]   33:     0x55abc745b584 - test::run_test::{{closure}}::h608b98ecff5665fb
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/test/src/lib.rs:599:41
[INFO] [stdout]   34:     0x55abc745b584 - std::sys_common::backtrace::__rust_begin_short_backtrace::hdc4182b97d1042e9
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   35:     0x55abc745ffb2 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h571773fd21d674c8
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/thread/mod.rs:542:17
[INFO] [stdout]   36:     0x55abc745ffb2 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hdcd384cf2fa70ba3
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x55abc745ffb2 - std::panicking::try::do_call::h4f1a44bd81423be1
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:559:40
[INFO] [stdout]   38:     0x55abc745ffb2 - std::panicking::try::h5e02afcb81dcd361
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panicking.rs:523:19
[INFO] [stdout]   39:     0x55abc745ffb2 - std::panic::catch_unwind::h022f75775bfd8c45
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/panic.rs:149:14
[INFO] [stdout]   40:     0x55abc745ffb2 - std::thread::Builder::spawn_unchecked_::{{closure}}::hf5a62e9e4e6df1f8
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/thread/mod.rs:541:30
[INFO] [stdout]   41:     0x55abc745ffb2 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h6d56360aeb9509a7
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x55abc74c3cbb - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h7a343dc551c06baa
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/alloc/src/boxed.rs:2022:9
[INFO] [stdout]   43:     0x55abc74c3cbb - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h30b8111cbaa644f3
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/alloc/src/boxed.rs:2022:9
[INFO] [stdout]   44:     0x55abc74c3cbb - std::sys::pal::unix::thread::Thread::new::thread_start::h7404e134e61e7a11
[INFO] [stdout]                                at /rustc/1871252fc8bb672d40787e67404e6eaae7059369/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7f572eb4fac3 - <unknown>
[INFO] [stdout]   46:     0x7f572ebe0a04 - __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" "9229f5531ce42e432dcae155108f664cbdab800ecb9cfdccb7daf91b926e0071", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9229f5531ce42e432dcae155108f664cbdab800ecb9cfdccb7daf91b926e0071", kill_on_drop: false }`
[INFO] [stdout] 9229f5531ce42e432dcae155108f664cbdab800ecb9cfdccb7daf91b926e0071
[INFO] testing mcon/craftinginterpreters-rust against try#b642703cf9526da1e72c0b6755753b939a9c6b6d for pr-125151
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmcon%2Fcraftinginterpreters-rust" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mcon/craftinginterpreters-rust on toolchain b642703cf9526da1e72c0b6755753b939a9c6b6d
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "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-1-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" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] efd6cae1422c35afd77dfcda1c6a677073632413fddcd57023dfcc39410279b8
[INFO] running `Command { std: "docker" "start" "-a" "efd6cae1422c35afd77dfcda1c6a677073632413fddcd57023dfcc39410279b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "efd6cae1422c35afd77dfcda1c6a677073632413fddcd57023dfcc39410279b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efd6cae1422c35afd77dfcda1c6a677073632413fddcd57023dfcc39410279b8", kill_on_drop: false }`
[INFO] [stdout] efd6cae1422c35afd77dfcda1c6a677073632413fddcd57023dfcc39410279b8
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1ea156dfe7b892706332353eaf29d29a72db56e12bdae1f34e5eecf91d9ed8f9
[INFO] running `Command { std: "docker" "start" "-a" "1ea156dfe7b892706332353eaf29d29a72db56e12bdae1f34e5eecf91d9ed8f9", 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: if this is an object-safe trait, 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: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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: 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: if this is an object-safe trait, 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: 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` profile [unoptimized + debuginfo] target(s) in 1.13s
[INFO] running `Command { std: "docker" "inspect" "1ea156dfe7b892706332353eaf29d29a72db56e12bdae1f34e5eecf91d9ed8f9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1ea156dfe7b892706332353eaf29d29a72db56e12bdae1f34e5eecf91d9ed8f9", kill_on_drop: false }`
[INFO] [stdout] 1ea156dfe7b892706332353eaf29d29a72db56e12bdae1f34e5eecf91d9ed8f9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 714feff0bc8839d65221951716e9f23f4b21bffc5e05015e3d3ee03db596c4f3
[INFO] running `Command { std: "docker" "start" "-a" "714feff0bc8839d65221951716e9f23f4b21bffc5e05015e3d3ee03db596c4f3", 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: if this is an object-safe trait, 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: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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: 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: if this is an object-safe trait, 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: 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] [stderr]    Compiling loxrust v0.1.0 (/opt/rustwide/workdir)
[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: if this is an object-safe trait, 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: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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: 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: if this is an object-safe trait, 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: 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` profile [unoptimized + debuginfo] target(s) in 0.43s
[INFO] running `Command { std: "docker" "inspect" "714feff0bc8839d65221951716e9f23f4b21bffc5e05015e3d3ee03db596c4f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "714feff0bc8839d65221951716e9f23f4b21bffc5e05015e3d3ee03db596c4f3", kill_on_drop: false }`
[INFO] [stdout] 714feff0bc8839d65221951716e9f23f4b21bffc5e05015e3d3ee03db596c4f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:59a85a07ab18ca8720692f8e61effa1c651d9e2ca591e072c2b212bb91a6b8b5" "/opt/rustwide/cargo-home/bin/cargo" "+b642703cf9526da1e72c0b6755753b939a9c6b6d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 9280e136000ce61951b7ca0e36ceb38fd54b863892b92112c653e3d43ce9cfce
[INFO] running `Command { std: "docker" "start" "-a" "9280e136000ce61951b7ca0e36ceb38fd54b863892b92112c653e3d43ce9cfce", 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: if this is an object-safe trait, 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: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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: if this is an object-safe trait, 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: 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: if this is an object-safe trait, 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: 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 12 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` profile [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/loxrust-21c6f5a7c1d5863f)
[INFO] [stdout] 
[INFO] [stdout] running 6 tests
[INFO] [stdout] test parser::tests::parse_expresion_with_brackets ... ok
[INFO] [stdout] test scanner::tests::equals_statement ... ok
[INFO] [stdout] test scanner::tests::statement_with_brackets ... ok
[INFO] [stdout] test scanner::tests::scan_string ... ok
[INFO] [stdout] test parser::tests::parse_valid_example_expression ... 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:     0x55e142a57d75 - std::backtrace_rs::backtrace::libunwind::trace::he49dc9a9e3164223
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
[INFO] [stdout]    1:     0x55e142a57d75 - std::backtrace_rs::backtrace::trace_unsynchronized::h3a3e77c68030aa6b
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stdout]    2:     0x55e142a57d75 - std::sys_common::backtrace::_print_fmt::h9479ad2f99afd5d4
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stdout]    3:     0x55e142a57d75 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hfb01aa1fa3fb1821
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stdout]    4:     0x55e142a7e5cb - core::fmt::rt::Argument::fmt::h125e56152abbc1c3
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/fmt/rt.rs:165:63
[INFO] [stdout]    5:     0x55e142a7e5cb - core::fmt::write::hb0ab4ff05ccfe741
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/fmt/mod.rs:1169:21
[INFO] [stdout]    6:     0x55e142a5565f - std::io::Write::write_fmt::hea6336dbf2fa00b8
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/io/mod.rs:1835:15
[INFO] [stdout]    7:     0x55e142a57b4e - std::sys_common::backtrace::_print::h79ca548f3a2adf4b
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stdout]    8:     0x55e142a57b4e - std::sys_common::backtrace::print::h9aebf997b2fea2d3
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stdout]    9:     0x55e142a594b9 - std::panicking::default_hook::{{closure}}::h68a0954af2694526
[INFO] [stdout]   10:     0x55e142a5920c - std::panicking::default_hook::h5be50cc6849ffb00
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:295:9
[INFO] [stdout]   11:     0x55e142a28baf - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::hd874405dcbd1d3ed
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/alloc/src/boxed.rs:2036:9
[INFO] [stdout]   12:     0x55e142a28baf - test::test_main::{{closure}}::h4f26a9df34a84b94
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x55e142a59abb - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h00e96d9c62aa9a12
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/alloc/src/boxed.rs:2036:9
[INFO] [stdout]   14:     0x55e142a59abb - std::panicking::rust_panic_with_hook::h3c0df6036729334c
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:799:13
[INFO] [stdout]   15:     0x55e142a59834 - std::panicking::begin_panic_handler::{{closure}}::ha3a21e93c4cfd807
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:664:13
[INFO] [stdout]   16:     0x55e142a58239 - std::sys_common::backtrace::__rust_end_short_backtrace::h19508a8f8ae71dc9
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stdout]   17:     0x55e142a59567 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:652:5
[INFO] [stdout]   18:     0x55e1429df823 - core::panicking::panic_fmt::h2ba8af99174d83ea
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/panicking.rs:72:14
[INFO] [stdout]   19:     0x55e1429dfc0e - core::panicking::assert_failed_inner::h5c44db15a6ee70ee
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/panicking.rs:408:17
[INFO] [stdout]   20:     0x55e1429ea4fe - core::panicking::assert_failed::h5732aef91842f82e
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/panicking.rs:363:5
[INFO] [stdout]   21:     0x55e1429e5fe4 - loxrust::ast::tests::ast_printer_simple::h620e999557d34763
[INFO] [stdout]                                at /opt/rustwide/workdir/src/ast.rs:156:9
[INFO] [stdout]   22:     0x55e1429e5a27 - loxrust::ast::tests::ast_printer_simple::{{closure}}::h41853ece7087f40a
[INFO] [stdout]                                at /opt/rustwide/workdir/src/ast.rs:136:28
[INFO] [stdout]   23:     0x55e1429e8016 - core::ops::function::FnOnce::call_once::h0b1d3270a0142d51
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x55e142a2d4cb - core::ops::function::FnOnce::call_once::h18c6bf92212b87a4
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x55e142a2d4cb - test::__rust_begin_short_backtrace::hdcf0edcfa9080086
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:625:18
[INFO] [stdout]   26:     0x55e142a2cb91 - test::run_test_in_process::{{closure}}::heac2c4eb375d2d10
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:648:60
[INFO] [stdout]   27:     0x55e142a2cb91 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h0289bafc8a1cc004
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x55e142a2cb91 - std::panicking::try::do_call::h5e158f1ad8a5f983
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:559:40
[INFO] [stdout]   29:     0x55e142a2cb91 - std::panicking::try::hea3411d60321c4de
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:523:19
[INFO] [stdout]   30:     0x55e142a2cb91 - std::panic::catch_unwind::hafb7bb18bc47bbc7
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panic.rs:149:14
[INFO] [stdout]   31:     0x55e142a2cb91 - test::run_test_in_process::h74dd138dc7762d99
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:648:27
[INFO] [stdout]   32:     0x55e142a2cb91 - test::run_test::{{closure}}::h6b390822e63606cf
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:569:43
[INFO] [stdout]   33:     0x55e1429f5564 - test::run_test::{{closure}}::h6e11dba8131d354b
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/test/src/lib.rs:599:41
[INFO] [stdout]   34:     0x55e1429f5564 - std::sys_common::backtrace::__rust_begin_short_backtrace::ha71b3541b59bdbbb
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys_common/backtrace.rs:155:18
[INFO] [stdout]   35:     0x55e1429fa032 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::hef92127c5ef9e53c
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/thread/mod.rs:542:17
[INFO] [stdout]   36:     0x55e1429fa032 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h859c109f9d11c92b
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x55e1429fa032 - std::panicking::try::do_call::hbf534c458cd858f0
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:559:40
[INFO] [stdout]   38:     0x55e1429fa032 - std::panicking::try::h65c18365a7b9ad90
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panicking.rs:523:19
[INFO] [stdout]   39:     0x55e1429fa032 - std::panic::catch_unwind::h21b25d4c69478c39
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/panic.rs:149:14
[INFO] [stdout]   40:     0x55e1429fa032 - std::thread::Builder::spawn_unchecked_::{{closure}}::h23335f620275a9bf
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/thread/mod.rs:541:30
[INFO] [stdout]   41:     0x55e1429fa032 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hb491dc55513e9b7c
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x55e142a5dc8b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h41b39260afcffdc9
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/alloc/src/boxed.rs:2022:9
[INFO] [stdout]   43:     0x55e142a5dc8b - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h6694c8dc6dd010c4
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/alloc/src/boxed.rs:2022:9
[INFO] [stdout]   44:     0x55e142a5dc8b - std::sys::pal::unix::thread::Thread::new::thread_start::hf16038e1c8e19c99
[INFO] [stdout]                                at /rustc/b642703cf9526da1e72c0b6755753b939a9c6b6d/library/std/src/sys/pal/unix/thread.rs:108:17
[INFO] [stdout]   45:     0x7f058fe1dac3 - <unknown>
[INFO] [stdout]   46:     0x7f058feaea04 - __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 0.02s
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] running `Command { std: "docker" "inspect" "9280e136000ce61951b7ca0e36ceb38fd54b863892b92112c653e3d43ce9cfce", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9280e136000ce61951b7ca0e36ceb38fd54b863892b92112c653e3d43ce9cfce", kill_on_drop: false }`
[INFO] [stdout] 9280e136000ce61951b7ca0e36ceb38fd54b863892b92112c653e3d43ce9cfce
