[INFO] cloning repository https://github.com/sayaks/fraction-interpreter
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sayaks/fraction-interpreter" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsayaks%2Ffraction-interpreter", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsayaks%2Ffraction-interpreter'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9f1ebb1090b73fbcbf5dc30093dc7e91f34a70ea
[INFO] testing sayaks/fraction-interpreter against beta-2025-09-21 for beta-1.91-2
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsayaks%2Ffraction-interpreter" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/sayaks/fraction-interpreter
[INFO] finished tweaking git repo https://github.com/sayaks/fraction-interpreter
[INFO] tweaked toml for git repo https://github.com/sayaks/fraction-interpreter written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/sayaks/fraction-interpreter on toolchain beta-2025-09-21
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/sayaks/fraction-interpreter already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2025-09-21" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 93dce106118c8c45fdbc7ec9885e52b24df64a7552dde72357fc1b568156ed5e
[INFO] running `Command { std: "docker" "start" "-a" "93dce106118c8c45fdbc7ec9885e52b24df64a7552dde72357fc1b568156ed5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "93dce106118c8c45fdbc7ec9885e52b24df64a7552dde72357fc1b568156ed5e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "93dce106118c8c45fdbc7ec9885e52b24df64a7552dde72357fc1b568156ed5e", kill_on_drop: false }`
[INFO] [stdout] 93dce106118c8c45fdbc7ec9885e52b24df64a7552dde72357fc1b568156ed5e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ec0c30a2154a855781e31fd239f7fd21beb8a5f9464ccf492d9f66cd8ff72a51
[INFO] running `Command { std: "docker" "start" "-a" "ec0c30a2154a855781e31fd239f7fd21beb8a5f9464ccf492d9f66cd8ff72a51", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.27
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling ucd-trie v0.1.1
[INFO] [stderr]    Compiling syn v0.15.30
[INFO] [stderr]    Compiling maplit v1.0.1
[INFO] [stderr]    Compiling rpds v0.6.0
[INFO] [stderr]    Compiling pest v2.1.0
[INFO] [stderr]    Compiling quote v0.6.11
[INFO] [stderr]    Compiling pest_meta v2.1.0
[INFO] [stderr]    Compiling pest_generator v2.1.0
[INFO] [stderr]    Compiling pest_derive v2.1.0
[INFO] [stderr]    Compiling fraction-interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter/ast.rs:93:19
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub func: &'a Fn (&List<Value<'a>>) -> Result<Value<'a>, RuntimeError>,
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub func: &'a dyn Fn (&List<Value<'a>>) -> Result<Value<'a>, RuntimeError>,
[INFO] [stdout]    |                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/interpreter/parser.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     match assignment_type.as_rule() {
[INFO] [stdout] 32 | |         Rule::var_assign => unimplemented!(),
[INFO] [stdout] 33 | |         Rule::func_assign => unimplemented!(),
[INFO] [stdout] 34 | |         _ => unreachable!(),
[INFO] [stdout] 35 | |     };
[INFO] [stdout]    | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 36 |
[INFO] [stdout] 37 |       unimplemented!();
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]    = note: this warning originates in the macro `unimplemented` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pair`
[INFO] [stdout]   --> src/interpreter/parser.rs:40:26
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn expression_parser<'a>(pair: Pair<Rule>) -> Result<ast::Statement<'a>, Error<Rule>> {
[INFO] [stdout]    |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_pair`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Closure<'a>` is more private than the item `Value::Function::0`
[INFO] [stdout]    --> src/interpreter/ast.rs:105:14
[INFO] [stdout]     |
[INFO] [stdout] 105 |     Function(Closure<'a>),
[INFO] [stdout]     |              ^^^^^^^^^^^ field `Value::Function::0` is reachable at visibility `pub(in crate::interpreter)`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `Closure<'a>` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/interpreter/ast.rs:64:1
[INFO] [stdout]     |
[INFO] [stdout]  64 | struct Closure<'a> {    
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `RuntimeError` is never used
[INFO] [stdout]  --> src/interpreter/ast.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub enum RuntimeError {
[INFO] [stdout]   |          ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Environment` is never constructed
[INFO] [stdout]   --> src/interpreter/ast.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct Environment<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get`, and `evaluate` are never used
[INFO] [stdout]   --> src/interpreter/ast.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl<'a> Environment<'a> {
[INFO] [stdout]    | ------------------------ associated items in this implementation
[INFO] [stdout] 24 |     pub fn new(parent: Option<Box<&'a Environment<'a>>>, defines: Vec<(&Name, &Value<'a>)>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn get(&self, name: &Name) -> Result<Value<'a>, RuntimeError> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn evaluate(&self, expr: &'a Expression<'a>) -> Result<Value<'a>, RuntimeError> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Closure` is never constructed
[INFO] [stdout]   --> src/interpreter/ast.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | struct Closure<'a> {    
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `call` is never used
[INFO] [stdout]   --> src/interpreter/ast.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | impl<'a> Closure<'a> {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] 72 |     fn call(&'a self, args: &'a List<Value<'a>>) -> Result<Value<'a>, RuntimeError> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Builtin` is never constructed
[INFO] [stdout]   --> src/interpreter/ast.rs:91:12
[INFO] [stdout]    |
[INFO] [stdout] 91 | pub struct Builtin<'a> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Value` is never used
[INFO] [stdout]   --> src/interpreter/ast.rs:99:10
[INFO] [stdout]    |
[INFO] [stdout] 99 | pub enum Value<'a> {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `try_call` is never used
[INFO] [stdout]    --> src/interpreter/ast.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 109 | impl<'a> Value<'a> {
[INFO] [stdout]     | ------------------ method in this implementation
[INFO] [stdout] 110 |     fn try_call(&'a self, args: &'a List<Value<'a>>) -> Result<Value<'a>, RuntimeError> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Expression` is never used
[INFO] [stdout]    --> src/interpreter/ast.rs:132:10
[INFO] [stdout]     |
[INFO] [stdout] 132 | pub enum Expression<'a> {
[INFO] [stdout]     |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Statement` is never used
[INFO] [stdout]    --> src/interpreter/ast.rs:140:10
[INFO] [stdout]     |
[INFO] [stdout] 140 | pub enum Statement<'a> {
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Program` is never used
[INFO] [stdout]    --> src/interpreter/ast.rs:145:10
[INFO] [stdout]     |
[INFO] [stdout] 145 | pub type Program<'a> = List<Statement<'a>>;
[INFO] [stdout]     |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Number` is never used
[INFO] [stdout]  --> src/interpreter/data_structures.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum Number {
[INFO] [stdout]   |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Name` is never used
[INFO] [stdout]   --> src/interpreter/data_structures.rs:39:10
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub type Name = String;
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_fraction_string` is never used
[INFO] [stdout]  --> src/interpreter/parser.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn parse_fraction_string<'a>(file: &str) -> Result<ast::Program<'a>, Error<Rule>> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `statement_parser` is never used
[INFO] [stdout]   --> src/interpreter/parser.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn statement_parser<'a>(pair: Pair<Rule>) -> Result<ast::Statement<'a>, Error<Rule>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `assignment_parser` is never used
[INFO] [stdout]   --> src/interpreter/parser.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn assignment_parser<'a>(pair: Pair<Rule>) -> Result<ast::Statement<'a>, Error<Rule>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expression_parser` is never used
[INFO] [stdout]   --> src/interpreter/parser.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn expression_parser<'a>(pair: Pair<Rule>) -> Result<ast::Statement<'a>, Error<Rule>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add2` is never used
[INFO] [stdout]  --> src/interpreter/builtins.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn add2<'a>(arg1: Value<'a>, arg2: &Value<'a>) -> Result<Value<'a>, RuntimeError> {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/interpreter/builtins.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn add<'a>(args: &List<Value<'a>>) -> Result<Value<'a>, RuntimeError> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ADD` is never used
[INFO] [stdout]   --> src/interpreter/builtins.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 | const ADD: Builtin<'static> = Builtin {
[INFO] [stdout]    |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.43s
[INFO] running `Command { std: "docker" "inspect" "ec0c30a2154a855781e31fd239f7fd21beb8a5f9464ccf492d9f66cd8ff72a51", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ec0c30a2154a855781e31fd239f7fd21beb8a5f9464ccf492d9f66cd8ff72a51", kill_on_drop: false }`
[INFO] [stdout] ec0c30a2154a855781e31fd239f7fd21beb8a5f9464ccf492d9f66cd8ff72a51
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c83c3bf38dbac94ad9288463461496bcdf3feaf06eb473adaf4eba926d6da407
[INFO] running `Command { std: "docker" "start" "-a" "c83c3bf38dbac94ad9288463461496bcdf3feaf06eb473adaf4eba926d6da407", kill_on_drop: false }`
[INFO] [stderr]    Compiling fraction-interpreter v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/interpreter/ast.rs:93:19
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub func: &'a Fn (&List<Value<'a>>) -> Result<Value<'a>, RuntimeError>,
[INFO] [stdout]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stdout] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 93 |     pub func: &'a dyn Fn (&List<Value<'a>>) -> Result<Value<'a>, RuntimeError>,
[INFO] [stdout]    |                   +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unreachable statement
[INFO] [stdout]   --> src/interpreter/parser.rs:37:5
[INFO] [stdout]    |
[INFO] [stdout] 31 | /     match assignment_type.as_rule() {
[INFO] [stdout] 32 | |         Rule::var_assign => unimplemented!(),
[INFO] [stdout] 33 | |         Rule::func_assign => unimplemented!(),
[INFO] [stdout] 34 | |         _ => unreachable!(),
[INFO] [stdout] 35 | |     };
[INFO] [stdout]    | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stdout] 36 |
[INFO] [stdout] 37 |       unimplemented!();
[INFO] [stdout]    |       ^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout]    = note: this warning originates in the macro `unimplemented` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pair`
[INFO] [stdout]   --> src/interpreter/parser.rs:40:26
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn expression_parser<'a>(pair: Pair<Rule>) -> Result<ast::Statement<'a>, Error<Rule>> {
[INFO] [stdout]    |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_pair`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type `Closure<'a>` is more private than the item `Value::Function::0`
[INFO] [stdout]    --> src/interpreter/ast.rs:105:14
[INFO] [stdout]     |
[INFO] [stdout] 105 |     Function(Closure<'a>),
[INFO] [stdout]     |              ^^^^^^^^^^^ field `Value::Function::0` is reachable at visibility `pub(in crate::interpreter)`
[INFO] [stdout]     |
[INFO] [stdout] note: but type `Closure<'a>` is only usable at visibility `pub(self)`
[INFO] [stdout]    --> src/interpreter/ast.rs:64:1
[INFO] [stdout]     |
[INFO] [stdout]  64 | struct Closure<'a> {    
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     = note: `#[warn(private_interfaces)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `RuntimeError` is never used
[INFO] [stdout]  --> src/interpreter/ast.rs:7:10
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub enum RuntimeError {
[INFO] [stdout]   |          ^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Environment` is never constructed
[INFO] [stdout]   --> src/interpreter/ast.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct Environment<'a> {
[INFO] [stdout]    |            ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated items `new`, `get`, and `evaluate` are never used
[INFO] [stdout]   --> src/interpreter/ast.rs:24:12
[INFO] [stdout]    |
[INFO] [stdout] 23 | impl<'a> Environment<'a> {
[INFO] [stdout]    | ------------------------ associated items in this implementation
[INFO] [stdout] 24 |     pub fn new(parent: Option<Box<&'a Environment<'a>>>, defines: Vec<(&Name, &Value<'a>)>) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 36 |     fn get(&self, name: &Name) -> Result<Value<'a>, RuntimeError> {
[INFO] [stdout]    |        ^^^
[INFO] [stdout] ...
[INFO] [stdout] 48 |     fn evaluate(&self, expr: &'a Expression<'a>) -> Result<Value<'a>, RuntimeError> {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Closure` is never constructed
[INFO] [stdout]   --> src/interpreter/ast.rs:64:8
[INFO] [stdout]    |
[INFO] [stdout] 64 | struct Closure<'a> {    
[INFO] [stdout]    |        ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `call` is never used
[INFO] [stdout]   --> src/interpreter/ast.rs:72:8
[INFO] [stdout]    |
[INFO] [stdout] 71 | impl<'a> Closure<'a> {
[INFO] [stdout]    | -------------------- method in this implementation
[INFO] [stdout] 72 |     fn call(&'a self, args: &'a List<Value<'a>>) -> Result<Value<'a>, RuntimeError> {
[INFO] [stdout]    |        ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Builtin` is never constructed
[INFO] [stdout]   --> src/interpreter/ast.rs:91:12
[INFO] [stdout]    |
[INFO] [stdout] 91 | pub struct Builtin<'a> {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Value` is never used
[INFO] [stdout]   --> src/interpreter/ast.rs:99:10
[INFO] [stdout]    |
[INFO] [stdout] 99 | pub enum Value<'a> {
[INFO] [stdout]    |          ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `try_call` is never used
[INFO] [stdout]    --> src/interpreter/ast.rs:110:8
[INFO] [stdout]     |
[INFO] [stdout] 109 | impl<'a> Value<'a> {
[INFO] [stdout]     | ------------------ method in this implementation
[INFO] [stdout] 110 |     fn try_call(&'a self, args: &'a List<Value<'a>>) -> Result<Value<'a>, RuntimeError> {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Expression` is never used
[INFO] [stdout]    --> src/interpreter/ast.rs:132:10
[INFO] [stdout]     |
[INFO] [stdout] 132 | pub enum Expression<'a> {
[INFO] [stdout]     |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Statement` is never used
[INFO] [stdout]    --> src/interpreter/ast.rs:140:10
[INFO] [stdout]     |
[INFO] [stdout] 140 | pub enum Statement<'a> {
[INFO] [stdout]     |          ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Program` is never used
[INFO] [stdout]    --> src/interpreter/ast.rs:145:10
[INFO] [stdout]     |
[INFO] [stdout] 145 | pub type Program<'a> = List<Statement<'a>>;
[INFO] [stdout]     |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum `Number` is never used
[INFO] [stdout]  --> src/interpreter/data_structures.rs:4:10
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub enum Number {
[INFO] [stdout]   |          ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Name` is never used
[INFO] [stdout]   --> src/interpreter/data_structures.rs:39:10
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub type Name = String;
[INFO] [stdout]    |          ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `parse_fraction_string` is never used
[INFO] [stdout]  --> src/interpreter/parser.rs:9:4
[INFO] [stdout]   |
[INFO] [stdout] 9 | fn parse_fraction_string<'a>(file: &str) -> Result<ast::Program<'a>, Error<Rule>> {
[INFO] [stdout]   |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `statement_parser` is never used
[INFO] [stdout]   --> src/interpreter/parser.rs:21:4
[INFO] [stdout]    |
[INFO] [stdout] 21 | fn statement_parser<'a>(pair: Pair<Rule>) -> Result<ast::Statement<'a>, Error<Rule>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `assignment_parser` is never used
[INFO] [stdout]   --> src/interpreter/parser.rs:27:4
[INFO] [stdout]    |
[INFO] [stdout] 27 | fn assignment_parser<'a>(pair: Pair<Rule>) -> Result<ast::Statement<'a>, Error<Rule>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `expression_parser` is never used
[INFO] [stdout]   --> src/interpreter/parser.rs:40:4
[INFO] [stdout]    |
[INFO] [stdout] 40 | fn expression_parser<'a>(pair: Pair<Rule>) -> Result<ast::Statement<'a>, Error<Rule>> {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add2` is never used
[INFO] [stdout]  --> src/interpreter/builtins.rs:5:4
[INFO] [stdout]   |
[INFO] [stdout] 5 | fn add2<'a>(arg1: Value<'a>, arg2: &Value<'a>) -> Result<Value<'a>, RuntimeError> {
[INFO] [stdout]   |    ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `add` is never used
[INFO] [stdout]   --> src/interpreter/builtins.rs:13:4
[INFO] [stdout]    |
[INFO] [stdout] 13 | fn add<'a>(args: &List<Value<'a>>) -> Result<Value<'a>, RuntimeError> {
[INFO] [stdout]    |    ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant `ADD` is never used
[INFO] [stdout]   --> src/interpreter/builtins.rs:17:7
[INFO] [stdout]    |
[INFO] [stdout] 17 | const ADD: Builtin<'static> = Builtin {
[INFO] [stdout]    |       ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "c83c3bf38dbac94ad9288463461496bcdf3feaf06eb473adaf4eba926d6da407", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c83c3bf38dbac94ad9288463461496bcdf3feaf06eb473adaf4eba926d6da407", kill_on_drop: false }`
[INFO] [stdout] c83c3bf38dbac94ad9288463461496bcdf3feaf06eb473adaf4eba926d6da407
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2025-09-21" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 368ce4708b1edd2f825460f4cbd32eef10f0140f62a29303ec4a9652c28227e0
[INFO] running `Command { std: "docker" "start" "-a" "368ce4708b1edd2f825460f4cbd32eef10f0140f62a29303ec4a9652c28227e0", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/interpreter/ast.rs:93:19
[INFO] [stderr]    |
[INFO] [stderr] 93 |     pub func: &'a Fn (&List<Value<'a>>) -> Result<Value<'a>, RuntimeError>,
[INFO] [stderr]    |                   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see <https://doc.rust-lang.org/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` (part of `#[warn(rust_2021_compatibility)]`) on by default
[INFO] [stderr] help: if this is a dyn-compatible trait, use `dyn`
[INFO] [stderr]    |
[INFO] [stderr] 93 |     pub func: &'a dyn Fn (&List<Value<'a>>) -> Result<Value<'a>, RuntimeError>,
[INFO] [stderr]    |                   +++
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable statement
[INFO] [stderr]   --> src/interpreter/parser.rs:37:5
[INFO] [stderr]    |
[INFO] [stderr] 31 | /     match assignment_type.as_rule() {
[INFO] [stderr] 32 | |         Rule::var_assign => unimplemented!(),
[INFO] [stderr] 33 | |         Rule::func_assign => unimplemented!(),
[INFO] [stderr] 34 | |         _ => unreachable!(),
[INFO] [stderr] 35 | |     };
[INFO] [stderr]    | |_____- any code following this `match` expression is unreachable, as all arms diverge
[INFO] [stderr] 36 |
[INFO] [stderr] 37 |       unimplemented!();
[INFO] [stderr]    |       ^^^^^^^^^^^^^^^^ unreachable statement
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unreachable_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr]    = note: this warning originates in the macro `unimplemented` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `pair`
[INFO] [stderr]   --> src/interpreter/parser.rs:40:26
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn expression_parser<'a>(pair: Pair<Rule>) -> Result<ast::Statement<'a>, Error<Rule>> {
[INFO] [stderr]    |                          ^^^^ help: if this is intentional, prefix it with an underscore: `_pair`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type `Closure<'a>` is more private than the item `Value::Function::0`
[INFO] [stderr]    --> src/interpreter/ast.rs:105:14
[INFO] [stderr]     |
[INFO] [stderr] 105 |     Function(Closure<'a>),
[INFO] [stderr]     |              ^^^^^^^^^^^ field `Value::Function::0` is reachable at visibility `pub(in crate::interpreter)`
[INFO] [stderr]     |
[INFO] [stderr] note: but type `Closure<'a>` is only usable at visibility `pub(self)`
[INFO] [stderr]    --> src/interpreter/ast.rs:64:1
[INFO] [stderr]     |
[INFO] [stderr]  64 | struct Closure<'a> {    
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = note: `#[warn(private_interfaces)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: enum `RuntimeError` is never used
[INFO] [stderr]  --> src/interpreter/ast.rs:7:10
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub enum RuntimeError {
[INFO] [stderr]   |          ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Environment` is never constructed
[INFO] [stderr]   --> src/interpreter/ast.rs:18:12
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub struct Environment<'a> {
[INFO] [stderr]    |            ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated items `new`, `get`, and `evaluate` are never used
[INFO] [stderr]   --> src/interpreter/ast.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 23 | impl<'a> Environment<'a> {
[INFO] [stderr]    | ------------------------ associated items in this implementation
[INFO] [stderr] 24 |     pub fn new(parent: Option<Box<&'a Environment<'a>>>, defines: Vec<(&Name, &Value<'a>)>) -> Self {
[INFO] [stderr]    |            ^^^
[INFO] [stderr] ...
[INFO] [stderr] 36 |     fn get(&self, name: &Name) -> Result<Value<'a>, RuntimeError> {
[INFO] [stderr]    |        ^^^
[INFO] [stderr] ...
[INFO] [stderr] 48 |     fn evaluate(&self, expr: &'a Expression<'a>) -> Result<Value<'a>, RuntimeError> {
[INFO] [stderr]    |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Closure` is never constructed
[INFO] [stderr]   --> src/interpreter/ast.rs:64:8
[INFO] [stderr]    |
[INFO] [stderr] 64 | struct Closure<'a> {    
[INFO] [stderr]    |        ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `call` is never used
[INFO] [stderr]   --> src/interpreter/ast.rs:72:8
[INFO] [stderr]    |
[INFO] [stderr] 71 | impl<'a> Closure<'a> {
[INFO] [stderr]    | -------------------- method in this implementation
[INFO] [stderr] 72 |     fn call(&'a self, args: &'a List<Value<'a>>) -> Result<Value<'a>, RuntimeError> {
[INFO] [stderr]    |        ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct `Builtin` is never constructed
[INFO] [stderr]   --> src/interpreter/ast.rs:91:12
[INFO] [stderr]    |
[INFO] [stderr] 91 | pub struct Builtin<'a> {
[INFO] [stderr]    |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Value` is never used
[INFO] [stderr]   --> src/interpreter/ast.rs:99:10
[INFO] [stderr]    |
[INFO] [stderr] 99 | pub enum Value<'a> {
[INFO] [stderr]    |          ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method `try_call` is never used
[INFO] [stderr]    --> src/interpreter/ast.rs:110:8
[INFO] [stderr]     |
[INFO] [stderr] 109 | impl<'a> Value<'a> {
[INFO] [stderr]     | ------------------ method in this implementation
[INFO] [stderr] 110 |     fn try_call(&'a self, args: &'a List<Value<'a>>) -> Result<Value<'a>, RuntimeError> {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Expression` is never used
[INFO] [stderr]    --> src/interpreter/ast.rs:132:10
[INFO] [stderr]     |
[INFO] [stderr] 132 | pub enum Expression<'a> {
[INFO] [stderr]     |          ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Statement` is never used
[INFO] [stderr]    --> src/interpreter/ast.rs:140:10
[INFO] [stderr]     |
[INFO] [stderr] 140 | pub enum Statement<'a> {
[INFO] [stderr]     |          ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `Program` is never used
[INFO] [stderr]    --> src/interpreter/ast.rs:145:10
[INFO] [stderr]     |
[INFO] [stderr] 145 | pub type Program<'a> = List<Statement<'a>>;
[INFO] [stderr]     |          ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum `Number` is never used
[INFO] [stderr]  --> src/interpreter/data_structures.rs:4:10
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub enum Number {
[INFO] [stderr]   |          ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias `Name` is never used
[INFO] [stderr]   --> src/interpreter/data_structures.rs:39:10
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub type Name = String;
[INFO] [stderr]    |          ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `parse_fraction_string` is never used
[INFO] [stderr]  --> src/interpreter/parser.rs:9:4
[INFO] [stderr]   |
[INFO] [stderr] 9 | fn parse_fraction_string<'a>(file: &str) -> Result<ast::Program<'a>, Error<Rule>> {
[INFO] [stderr]   |    ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `statement_parser` is never used
[INFO] [stderr]   --> src/interpreter/parser.rs:21:4
[INFO] [stderr]    |
[INFO] [stderr] 21 | fn statement_parser<'a>(pair: Pair<Rule>) -> Result<ast::Statement<'a>, Error<Rule>> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `assignment_parser` is never used
[INFO] [stderr]   --> src/interpreter/parser.rs:27:4
[INFO] [stderr]    |
[INFO] [stderr] 27 | fn assignment_parser<'a>(pair: Pair<Rule>) -> Result<ast::Statement<'a>, Error<Rule>> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `expression_parser` is never used
[INFO] [stderr]   --> src/interpreter/parser.rs:40:4
[INFO] [stderr]    |
[INFO] [stderr] 40 | fn expression_parser<'a>(pair: Pair<Rule>) -> Result<ast::Statement<'a>, Error<Rule>> {
[INFO] [stderr]    |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `add2` is never used
[INFO] [stderr]  --> src/interpreter/builtins.rs:5:4
[INFO] [stderr]   |
[INFO] [stderr] 5 | fn add2<'a>(arg1: Value<'a>, arg2: &Value<'a>) -> Result<Value<'a>, RuntimeError> {
[INFO] [stderr]   |    ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function `add` is never used
[INFO] [stderr]   --> src/interpreter/builtins.rs:13:4
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn add<'a>(args: &List<Value<'a>>) -> Result<Value<'a>, RuntimeError> {
[INFO] [stderr]    |    ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant `ADD` is never used
[INFO] [stderr]   --> src/interpreter/builtins.rs:17:7
[INFO] [stderr]    |
[INFO] [stderr] 17 | const ADD: Builtin<'static> = Builtin {
[INFO] [stderr]    |       ^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `fraction-interpreter` (bin "fraction-interpreter" test) generated 24 warnings (run `cargo fix --bin "fraction-interpreter" --tests` to apply 1 suggestion)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/fraction_interpreter-7835b92b171b1d4f)
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stderr] error: test failed, to rerun pass `--bin fraction-interpreter`
[INFO] [stdout] test interpreter::test::name ... FAILED
[INFO] [stdout] test interpreter::parser::test::test ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- interpreter::test::name stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'interpreter::test::name' (18) panicked at src/interpreter/mod.rs:10:9:
[INFO] [stdout] not implemented
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5d499440c3e2 - std::backtrace_rs::backtrace::libunwind::trace::hcab59e1e990fdc24
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5d499440c3e2 - std::backtrace_rs::backtrace::trace_unsynchronized::he24cc57f3d2f47b7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5d499440c3e2 - std::sys::backtrace::_print_fmt::hf8d65ede198eeb54
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5d499440c3e2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h67edf0e4d33c343c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5d499441c5cf - core::fmt::rt::Argument::fmt::hef94184842aeafdd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5d499441c5cf - core::fmt::write::hcf0c66b48a8fa606
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x5d49943d9841 - std::io::default_write_fmt::h69967ac0ba93195f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5d49943d9841 - std::io::Write::write_fmt::h8db9396209deaa1c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5d49943e58a2 - std::sys::backtrace::BacktraceLock::print::h07e5435aa717b414
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5d49943ea44f - std::panicking::default_hook::{{closure}}::h91001850288db5f7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x5d49943ea2e1 - std::panicking::default_hook::h2346dbb704ef5512
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x5d49943a4f9e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h18383b2e29377420
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   12:     0x5d49943a4f9e - test::test_main_with_exit_callback::{{closure}}::h272d7ef99aef06dc
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5d49943eab0f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6dba6e441651a0d1
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   14:     0x5d49943eab0f - std::panicking::panic_with_hook::hd2b063a6090d23a4
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x5d49943ea936 - std::panicking::panic_handler::{{closure}}::he666d95f139a333e
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:700:13
[INFO] [stdout]   16:     0x5d49943e59d9 - std::sys::backtrace::__rust_end_short_backtrace::h631ad224854ebee5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x5d49943cdd1d - __rustc[1d67440d6e82e4f]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x5d49944240f0 - core::panicking::panic_fmt::h420ddb7fd73daf53
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x5d49944240cc - core::panicking::panic::h355c5fec13755e30
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:145:5
[INFO] [stdout]   20:     0x5d499437999a - fraction_interpreter::interpreter::test::name::h7bf1e75f78f0c80d
[INFO] [stdout]                                at /opt/rustwide/workdir/src/interpreter/mod.rs:10:9
[INFO] [stdout]   21:     0x5d49943799b7 - fraction_interpreter::interpreter::test::name::{{closure}}::h1442172725743799
[INFO] [stdout]                                at /opt/rustwide/workdir/src/interpreter/mod.rs:9:14
[INFO] [stdout]   22:     0x5d499437de96 - core::ops::function::FnOnce::call_once::h8b7b4db702e8b1ce
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x5d49943a4d5b - core::ops::function::FnOnce::call_once::h70887edf07a630ba
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5d49943a4d5b - test::__rust_begin_short_backtrace::h27763c4cbbdb8601
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:663:18
[INFO] [stdout]   25:     0x5d49943ba9c5 - test::run_test_in_process::{{closure}}::h4dc8bc6d5e3924d3
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:686:74
[INFO] [stdout]   26:     0x5d49943ba9c5 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h75905e8ffe81974f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   27:     0x5d49943ba9c5 - std::panicking::catch_unwind::do_call::h0bc60366ba66eba5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   28:     0x5d49943ba9c5 - std::panicking::catch_unwind::hae1ec7bf94407afa
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   29:     0x5d49943ba9c5 - std::panic::catch_unwind::h0f4ff4773d84d3cd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   30:     0x5d49943ba9c5 - test::run_test_in_process::h03fbc77ae48b3f10
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:686:27
[INFO] [stdout]   31:     0x5d49943ba9c5 - test::run_test::{{closure}}::h83476a9c453dc4d3
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:607:43
[INFO] [stdout]   32:     0x5d49943911b4 - test::run_test::{{closure}}::h515482ad1e7fe7de
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:637:41
[INFO] [stdout]   33:     0x5d49943911b4 - std::sys::backtrace::__rust_begin_short_backtrace::hed09f6ac5fe9d647
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   34:     0x5d4994394a7a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h988e2cd969319888
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   35:     0x5d4994394a7a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd70e28dc46ec20be
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   36:     0x5d4994394a7a - std::panicking::catch_unwind::do_call::hdc29e11311eb7655
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   37:     0x5d4994394a7a - std::panicking::catch_unwind::h9e402d6a96fef41c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   38:     0x5d4994394a7a - std::panic::catch_unwind::h9213c0c54aec70e0
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x5d4994394a7a - std::thread::Builder::spawn_unchecked_::{{closure}}::h6262965869ed2b87
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   40:     0x5d4994394a7a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h05c05ed02619e462
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x5d49943e0b3f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h2044e71c41d3958a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   42:     0x5d49943e0b3f - std::sys::thread::unix::Thread::new::thread_start::hf277835320aa8e5a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/thread/unix.rs:126:17
[INFO] [stdout]   43:     0x7c3cc1188aa4 - <unknown>
[INFO] [stdout]   44:     0x7c3cc1215a34 - clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- interpreter::parser::test::test stdout ----
[INFO] [stdout] Ok(
[INFO] [stdout]     [
[INFO] [stdout]         Pair {
[INFO] [stdout]             rule: program,
[INFO] [stdout]             span: Span {
[INFO] [stdout]                 str: "foo(a, 2)",
[INFO] [stdout]                 start: 0,
[INFO] [stdout]                 end: 9,
[INFO] [stdout]             },
[INFO] [stdout]             inner: [
[INFO] [stdout]                 Pair {
[INFO] [stdout]                     rule: statement,
[INFO] [stdout]                     span: Span {
[INFO] [stdout]                         str: "foo(a, 2)",
[INFO] [stdout]                         start: 0,
[INFO] [stdout]                         end: 9,
[INFO] [stdout]                     },
[INFO] [stdout]                     inner: [
[INFO] [stdout]                         Pair {
[INFO] [stdout]                             rule: expr,
[INFO] [stdout]                             span: Span {
[INFO] [stdout]                                 str: "foo(a, 2)",
[INFO] [stdout]                                 start: 0,
[INFO] [stdout]                                 end: 9,
[INFO] [stdout]                             },
[INFO] [stdout]                             inner: [
[INFO] [stdout]                                 Pair {
[INFO] [stdout]                                     rule: funcapply,
[INFO] [stdout]                                     span: Span {
[INFO] [stdout]                                         str: "foo(a, 2)",
[INFO] [stdout]                                         start: 0,
[INFO] [stdout]                                         end: 9,
[INFO] [stdout]                                     },
[INFO] [stdout]                                     inner: [
[INFO] [stdout]                                         Pair {
[INFO] [stdout]                                             rule: varname,
[INFO] [stdout]                                             span: Span {
[INFO] [stdout]                                                 str: "foo",
[INFO] [stdout]                                                 start: 0,
[INFO] [stdout]                                                 end: 3,
[INFO] [stdout]                                             },
[INFO] [stdout]                                             inner: [],
[INFO] [stdout]                                         },
[INFO] [stdout]                                         Pair {
[INFO] [stdout]                                             rule: apply_list,
[INFO] [stdout]                                             span: Span {
[INFO] [stdout]                                                 str: "(a, 2)",
[INFO] [stdout]                                                 start: 3,
[INFO] [stdout]                                                 end: 9,
[INFO] [stdout]                                             },
[INFO] [stdout]                                             inner: [
[INFO] [stdout]                                                 Pair {
[INFO] [stdout]                                                     rule: exprlist,
[INFO] [stdout]                                                     span: Span {
[INFO] [stdout]                                                         str: "a, 2",
[INFO] [stdout]                                                         start: 4,
[INFO] [stdout]                                                         end: 8,
[INFO] [stdout]                                                     },
[INFO] [stdout]                                                     inner: [
[INFO] [stdout]                                                         Pair {
[INFO] [stdout]                                                             rule: expr,
[INFO] [stdout]                                                             span: Span {
[INFO] [stdout]                                                                 str: "a",
[INFO] [stdout]                                                                 start: 4,
[INFO] [stdout]                                                                 end: 5,
[INFO] [stdout]                                                             },
[INFO] [stdout]                                                             inner: [
[INFO] [stdout]                                                                 Pair {
[INFO] [stdout]                                                                     rule: bin_operator_expr,
[INFO] [stdout]                                                                     span: Span {
[INFO] [stdout]                                                                         str: "a",
[INFO] [stdout]                                                                         start: 4,
[INFO] [stdout]                                                                         end: 5,
[INFO] [stdout]                                                                     },
[INFO] [stdout]                                                                     inner: [
[INFO] [stdout]                                                                         Pair {
[INFO] [stdout]                                                                             rule: unary_operator_expr,
[INFO] [stdout]                                                                             span: Span {
[INFO] [stdout]                                                                                 str: "a",
[INFO] [stdout]                                                                                 start: 4,
[INFO] [stdout]                                                                                 end: 5,
[INFO] [stdout]                                                                             },
[INFO] [stdout]                                                                             inner: [
[INFO] [stdout]                                                                                 Pair {
[INFO] [stdout]                                                                                     rule: nested_expr,
[INFO] [stdout]                                                                                     span: Span {
[INFO] [stdout]                                                                                         str: "a",
[INFO] [stdout]                                                                                         start: 4,
[INFO] [stdout]                                                                                         end: 5,
[INFO] [stdout]                                                                                     },
[INFO] [stdout]                                                                                     inner: [
[INFO] [stdout]                                                                                         Pair {
[INFO] [stdout]                                                                                             rule: atom,
[INFO] [stdout]                                                                                             span: Span {
[INFO] [stdout]                                                                                                 str: "a",
[INFO] [stdout]                                                                                                 start: 4,
[INFO] [stdout]                                                                                                 end: 5,
[INFO] [stdout]                                                                                             },
[INFO] [stdout]                                                                                             inner: [],
[INFO] [stdout]                                                                                         },
[INFO] [stdout]                                                                                     ],
[INFO] [stdout]                                                                                 },
[INFO] [stdout]                                                                             ],
[INFO] [stdout]                                                                         },
[INFO] [stdout]                                                                     ],
[INFO] [stdout]                                                                 },
[INFO] [stdout]                                                             ],
[INFO] [stdout]                                                         },
[INFO] [stdout]                                                         Pair {
[INFO] [stdout]                                                             rule: expr,
[INFO] [stdout]                                                             span: Span {
[INFO] [stdout]                                                                 str: "2",
[INFO] [stdout]                                                                 start: 7,
[INFO] [stdout]                                                                 end: 8,
[INFO] [stdout]                                                             },
[INFO] [stdout]                                                             inner: [
[INFO] [stdout]                                                                 Pair {
[INFO] [stdout]                                                                     rule: bin_operator_expr,
[INFO] [stdout]                                                                     span: Span {
[INFO] [stdout]                                                                         str: "2",
[INFO] [stdout]                                                                         start: 7,
[INFO] [stdout]                                                                         end: 8,
[INFO] [stdout]                                                                     },
[INFO] [stdout]                                                                     inner: [
[INFO] [stdout]                                                                         Pair {
[INFO] [stdout]                                                                             rule: unary_operator_expr,
[INFO] [stdout]                                                                             span: Span {
[INFO] [stdout]                                                                                 str: "2",
[INFO] [stdout]                                                                                 start: 7,
[INFO] [stdout]                                                                                 end: 8,
[INFO] [stdout]                                                                             },
[INFO] [stdout]                                                                             inner: [
[INFO] [stdout]                                                                                 Pair {
[INFO] [stdout]                                                                                     rule: nested_expr,
[INFO] [stdout]                                                                                     span: Span {
[INFO] [stdout]                                                                                         str: "2",
[INFO] [stdout]                                                                                         start: 7,
[INFO] [stdout]                                                                                         end: 8,
[INFO] [stdout]                                                                                     },
[INFO] [stdout]                                                                                     inner: [
[INFO] [stdout]                                                                                         Pair {
[INFO] [stdout]                                                                                             rule: atom,
[INFO] [stdout]                                                                                             span: Span {
[INFO] [stdout]                                                                                                 str: "2",
[INFO] [stdout]                                                                                                 start: 7,
[INFO] [stdout]                                                                                                 end: 8,
[INFO] [stdout]                                                                                             },
[INFO] [stdout]                                                                                             inner: [
[INFO] [stdout]                                                                                                 Pair {
[INFO] [stdout]                                                                                                     rule: number,
[INFO] [stdout]                                                                                                     span: Span {
[INFO] [stdout]                                                                                                         str: "2",
[INFO] [stdout]                                                                                                         start: 7,
[INFO] [stdout]                                                                                                         end: 8,
[INFO] [stdout]                                                                                                     },
[INFO] [stdout]                                                                                                     inner: [
[INFO] [stdout]                                                                                                         Pair {
[INFO] [stdout]                                                                                                             rule: integer,
[INFO] [stdout]                                                                                                             span: Span {
[INFO] [stdout]                                                                                                                 str: "2",
[INFO] [stdout]                                                                                                                 start: 7,
[INFO] [stdout]                                                                                                                 end: 8,
[INFO] [stdout]                                                                                                             },
[INFO] [stdout]                                                                                                             inner: [],
[INFO] [stdout]                                                                                                         },
[INFO] [stdout]                                                                                                     ],
[INFO] [stdout]                                                                                                 },
[INFO] [stdout]                                                                                             ],
[INFO] [stdout]                                                                                         },
[INFO] [stdout]                                                                                     ],
[INFO] [stdout]                                                                                 },
[INFO] [stdout]                                                                             ],
[INFO] [stdout]                                                                         },
[INFO] [stdout]                                                                     ],
[INFO] [stdout]                                                                 },
[INFO] [stdout]                                                             ],
[INFO] [stdout]                                                         },
[INFO] [stdout]                                                     ],
[INFO] [stdout]                                                 },
[INFO] [stdout]                                             ],
[INFO] [stdout]                                         },
[INFO] [stdout]                                     ],
[INFO] [stdout]                                 },
[INFO] [stdout]                             ],
[INFO] [stdout]                         },
[INFO] [stdout]                     ],
[INFO] [stdout]                 },
[INFO] [stdout]             ],
[INFO] [stdout]         },
[INFO] [stdout]     ],
[INFO] [stdout] )
[INFO] [stdout] Ok(
[INFO] [stdout]     [
[INFO] [stdout]         Pair {
[INFO] [stdout]             rule: program,
[INFO] [stdout]             span: Span {
[INFO] [stdout]                 str: "a + b",
[INFO] [stdout]                 start: 0,
[INFO] [stdout]                 end: 5,
[INFO] [stdout]             },
[INFO] [stdout]             inner: [
[INFO] [stdout]                 Pair {
[INFO] [stdout]                     rule: statement,
[INFO] [stdout]                     span: Span {
[INFO] [stdout]                         str: "a + b",
[INFO] [stdout]                         start: 0,
[INFO] [stdout]                         end: 5,
[INFO] [stdout]                     },
[INFO] [stdout]                     inner: [
[INFO] [stdout]                         Pair {
[INFO] [stdout]                             rule: expr,
[INFO] [stdout]                             span: Span {
[INFO] [stdout]                                 str: "a + b",
[INFO] [stdout]                                 start: 0,
[INFO] [stdout]                                 end: 5,
[INFO] [stdout]                             },
[INFO] [stdout]                             inner: [
[INFO] [stdout]                                 Pair {
[INFO] [stdout]                                     rule: bin_operator_expr,
[INFO] [stdout]                                     span: Span {
[INFO] [stdout]                                         str: "a + b",
[INFO] [stdout]                                         start: 0,
[INFO] [stdout]                                         end: 5,
[INFO] [stdout]                                     },
[INFO] [stdout]                                     inner: [
[INFO] [stdout]                                         Pair {
[INFO] [stdout]                                             rule: unary_operator_expr,
[INFO] [stdout]                                             span: Span {
[INFO] [stdout]                                                 str: "a",
[INFO] [stdout]                                                 start: 0,
[INFO] [stdout]                                                 end: 1,
[INFO] [stdout]                                             },
[INFO] [stdout]                                             inner: [
[INFO] [stdout]                                                 Pair {
[INFO] [stdout]                                                     rule: nested_expr,
[INFO] [stdout]                                                     span: Span {
[INFO] [stdout]                                                         str: "a",
[INFO] [stdout]                                                         start: 0,
[INFO] [stdout]                                                         end: 1,
[INFO] [stdout]                                                     },
[INFO] [stdout]                                                     inner: [
[INFO] [stdout]                                                         Pair {
[INFO] [stdout]                                                             rule: atom,
[INFO] [stdout]                                                             span: Span {
[INFO] [stdout]                                                                 str: "a",
[INFO] [stdout]                                                                 start: 0,
[INFO] [stdout]                                                                 end: 1,
[INFO] [stdout]                                                             },
[INFO] [stdout]                                                             inner: [],
[INFO] [stdout]                                                         },
[INFO] [stdout]                                                     ],
[INFO] [stdout]                                                 },
[INFO] [stdout]                                             ],
[INFO] [stdout]                                         },
[INFO] [stdout]                                         Pair {
[INFO] [stdout]                                             rule: bin_operator,
[INFO] [stdout]                                             span: Span {
[INFO] [stdout]                                                 str: "+",
[INFO] [stdout]                                                 start: 2,
[INFO] [stdout]                                                 end: 3,
[INFO] [stdout]                                             },
[INFO] [stdout]                                             inner: [],
[INFO] [stdout]                                         },
[INFO] [stdout]                                         Pair {
[INFO] [stdout]                                             rule: bin_operator_expr,
[INFO] [stdout]                                             span: Span {
[INFO] [stdout]                                                 str: "b",
[INFO] [stdout]                                                 start: 4,
[INFO] [stdout]                                                 end: 5,
[INFO] [stdout]                                             },
[INFO] [stdout]                                             inner: [
[INFO] [stdout]                                                 Pair {
[INFO] [stdout]                                                     rule: unary_operator_expr,
[INFO] [stdout]                                                     span: Span {
[INFO] [stdout]                                                         str: "b",
[INFO] [stdout]                                                         start: 4,
[INFO] [stdout]                                                         end: 5,
[INFO] [stdout]                                                     },
[INFO] [stdout]                                                     inner: [
[INFO] [stdout]                                                         Pair {
[INFO] [stdout]                                                             rule: nested_expr,
[INFO] [stdout]                                                             span: Span {
[INFO] [stdout]                                                                 str: "b",
[INFO] [stdout]                                                                 start: 4,
[INFO] [stdout]                                                                 end: 5,
[INFO] [stdout]                                                             },
[INFO] [stdout]                                                             inner: [
[INFO] [stdout]                                                                 Pair {
[INFO] [stdout]                                                                     rule: atom,
[INFO] [stdout]                                                                     span: Span {
[INFO] [stdout]                                                                         str: "b",
[INFO] [stdout]                                                                         start: 4,
[INFO] [stdout]                                                                         end: 5,
[INFO] [stdout]                                                                     },
[INFO] [stdout]                                                                     inner: [],
[INFO] [stdout]                                                                 },
[INFO] [stdout]                                                             ],
[INFO] [stdout]                                                         },
[INFO] [stdout]                                                     ],
[INFO] [stdout]                                                 },
[INFO] [stdout]                                             ],
[INFO] [stdout]                                         },
[INFO] [stdout]                                     ],
[INFO] [stdout]                                 },
[INFO] [stdout]                             ],
[INFO] [stdout]                         },
[INFO] [stdout]                     ],
[INFO] [stdout]                 },
[INFO] [stdout]             ],
[INFO] [stdout]         },
[INFO] [stdout]     ],
[INFO] [stdout] )
[INFO] [stdout] Ok(
[INFO] [stdout]     [
[INFO] [stdout]         Pair {
[INFO] [stdout]             rule: program,
[INFO] [stdout]             span: Span {
[INFO] [stdout]                 str: "'b",
[INFO] [stdout]                 start: 0,
[INFO] [stdout]                 end: 2,
[INFO] [stdout]             },
[INFO] [stdout]             inner: [
[INFO] [stdout]                 Pair {
[INFO] [stdout]                     rule: statement,
[INFO] [stdout]                     span: Span {
[INFO] [stdout]                         str: "'b",
[INFO] [stdout]                         start: 0,
[INFO] [stdout]                         end: 2,
[INFO] [stdout]                     },
[INFO] [stdout]                     inner: [
[INFO] [stdout]                         Pair {
[INFO] [stdout]                             rule: expr,
[INFO] [stdout]                             span: Span {
[INFO] [stdout]                                 str: "'b",
[INFO] [stdout]                                 start: 0,
[INFO] [stdout]                                 end: 2,
[INFO] [stdout]                             },
[INFO] [stdout]                             inner: [
[INFO] [stdout]                                 Pair {
[INFO] [stdout]                                     rule: bin_operator_expr,
[INFO] [stdout]                                     span: Span {
[INFO] [stdout]                                         str: "'b",
[INFO] [stdout]                                         start: 0,
[INFO] [stdout]                                         end: 2,
[INFO] [stdout]                                     },
[INFO] [stdout]                                     inner: [
[INFO] [stdout]                                         Pair {
[INFO] [stdout]                                             rule: unary_operator_expr,
[INFO] [stdout]                                             span: Span {
[INFO] [stdout]                                                 str: "'b",
[INFO] [stdout]                                                 start: 0,
[INFO] [stdout]                                                 end: 2,
[INFO] [stdout]                                             },
[INFO] [stdout]                                             inner: [
[INFO] [stdout]                                                 Pair {
[INFO] [stdout]                                                     rule: unary_operator,
[INFO] [stdout]                                                     span: Span {
[INFO] [stdout]                                                         str: "'",
[INFO] [stdout]                                                         start: 0,
[INFO] [stdout]                                                         end: 1,
[INFO] [stdout]                                                     },
[INFO] [stdout]                                                     inner: [],
[INFO] [stdout]                                                 },
[INFO] [stdout]                                                 Pair {
[INFO] [stdout]                                                     rule: nested_expr,
[INFO] [stdout]                                                     span: Span {
[INFO] [stdout]                                                         str: "b",
[INFO] [stdout]                                                         start: 1,
[INFO] [stdout]                                                         end: 2,
[INFO] [stdout]                                                     },
[INFO] [stdout]                                                     inner: [
[INFO] [stdout]                                                         Pair {
[INFO] [stdout]                                                             rule: atom,
[INFO] [stdout]                                                             span: Span {
[INFO] [stdout]                                                                 str: "b",
[INFO] [stdout]                                                                 start: 1,
[INFO] [stdout]                                                                 end: 2,
[INFO] [stdout]                                                             },
[INFO] [stdout]                                                             inner: [],
[INFO] [stdout]                                                         },
[INFO] [stdout]                                                     ],
[INFO] [stdout]                                                 },
[INFO] [stdout]                                             ],
[INFO] [stdout]                                         },
[INFO] [stdout]                                     ],
[INFO] [stdout]                                 },
[INFO] [stdout]                             ],
[INFO] [stdout]                         },
[INFO] [stdout]                     ],
[INFO] [stdout]                 },
[INFO] [stdout]             ],
[INFO] [stdout]         },
[INFO] [stdout]     ],
[INFO] [stdout] )
[INFO] [stdout] Ok(
[INFO] [stdout]     [
[INFO] [stdout]         Pair {
[INFO] [stdout]             rule: program,
[INFO] [stdout]             span: Span {
[INFO] [stdout]                 str: "(a, b) -> a",
[INFO] [stdout]                 start: 0,
[INFO] [stdout]                 end: 11,
[INFO] [stdout]             },
[INFO] [stdout]             inner: [
[INFO] [stdout]                 Pair {
[INFO] [stdout]                     rule: statement,
[INFO] [stdout]                     span: Span {
[INFO] [stdout]                         str: "(a, b) -> a",
[INFO] [stdout]                         start: 0,
[INFO] [stdout]                         end: 11,
[INFO] [stdout]                     },
[INFO] [stdout]                     inner: [
[INFO] [stdout]                         Pair {
[INFO] [stdout]                             rule: expr,
[INFO] [stdout]                             span: Span {
[INFO] [stdout]                                 str: "(a, b) -> a",
[INFO] [stdout]                                 start: 0,
[INFO] [stdout]                                 end: 11,
[INFO] [stdout]                             },
[INFO] [stdout]                             inner: [
[INFO] [stdout]                                 Pair {
[INFO] [stdout]                                     rule: lambda,
[INFO] [stdout]                                     span: Span {
[INFO] [stdout]                                         str: "(a, b) -> a",
[INFO] [stdout]                                         start: 0,
[INFO] [stdout]                                         end: 11,
[INFO] [stdout]                                     },
[INFO] [stdout]                                     inner: [
[INFO] [stdout]                                         Pair {
[INFO] [stdout]                                             rule: args_list,
[INFO] [stdout]                                             span: Span {
[INFO] [stdout]                                                 str: "(a, b)",
[INFO] [stdout]                                                 start: 0,
[INFO] [stdout]                                                 end: 6,
[INFO] [stdout]                                             },
[INFO] [stdout]                                             inner: [
[INFO] [stdout]                                                 Pair {
[INFO] [stdout]                                                     rule: exprlist,
[INFO] [stdout]                                                     span: Span {
[INFO] [stdout]                                                         str: "a, b",
[INFO] [stdout]                                                         start: 1,
[INFO] [stdout]                                                         end: 5,
[INFO] [stdout]                                                     },
[INFO] [stdout]                                                     inner: [
[INFO] [stdout]                                                         Pair {
[INFO] [stdout]                                                             rule: expr,
[INFO] [stdout]                                                             span: Span {
[INFO] [stdout]                                                                 str: "a",
[INFO] [stdout]                                                                 start: 1,
[INFO] [stdout]                                                                 end: 2,
[INFO] [stdout]                                                             },
[INFO] [stdout]                                                             inner: [
[INFO] [stdout]                                                                 Pair {
[INFO] [stdout]                                                                     rule: bin_operator_expr,
[INFO] [stdout]                                                                     span: Span {
[INFO] [stdout]                                                                         str: "a",
[INFO] [stdout]                                                                         start: 1,
[INFO] [stdout]                                                                         end: 2,
[INFO] [stdout]                                                                     },
[INFO] [stdout]                                                                     inner: [
[INFO] [stdout]                                                                         Pair {
[INFO] [stdout]                                                                             rule: unary_operator_expr,
[INFO] [stdout]                                                                             span: Span {
[INFO] [stdout]                                                                                 str: "a",
[INFO] [stdout]                                                                                 start: 1,
[INFO] [stdout]                                                                                 end: 2,
[INFO] [stdout]                                                                             },
[INFO] [stdout]                                                                             inner: [
[INFO] [stdout]                                                                                 Pair {
[INFO] [stdout]                                                                                     rule: nested_expr,
[INFO] [stdout]                                                                                     span: Span {
[INFO] [stdout]                                                                                         str: "a",
[INFO] [stdout]                                                                                         start: 1,
[INFO] [stdout]                                                                                         end: 2,
[INFO] [stdout]                                                                                     },
[INFO] [stdout]                                                                                     inner: [
[INFO] [stdout]                                                                                         Pair {
[INFO] [stdout]                                                                                             rule: atom,
[INFO] [stdout]                                                                                             span: Span {
[INFO] [stdout]                                                                                                 str: "a",
[INFO] [stdout]                                                                                                 start: 1,
[INFO] [stdout]                                                                                                 end: 2,
[INFO] [stdout]                                                                                             },
[INFO] [stdout]                                                                                             inner: [],
[INFO] [stdout]                                                                                         },
[INFO] [stdout]                                                                                     ],
[INFO] [stdout]                                                                                 },
[INFO] [stdout]                                                                             ],
[INFO] [stdout]                                                                         },
[INFO] [stdout]                                                                     ],
[INFO] [stdout]                                                                 },
[INFO] [stdout]                                                             ],
[INFO] [stdout]                                                         },
[INFO] [stdout]                                                         Pair {
[INFO] [stdout]                                                             rule: expr,
[INFO] [stdout]                                                             span: Span {
[INFO] [stdout]                                                                 str: "b",
[INFO] [stdout]                                                                 start: 4,
[INFO] [stdout]                                                                 end: 5,
[INFO] [stdout]                                                             },
[INFO] [stdout]                                                             inner: [
[INFO] [stdout]                                                                 Pair {
[INFO] [stdout]                                                                     rule: bin_operator_expr,
[INFO] [stdout]                                                                     span: Span {
[INFO] [stdout]                                                                         str: "b",
[INFO] [stdout]                                                                         start: 4,
[INFO] [stdout]                                                                         end: 5,
[INFO] [stdout]                                                                     },
[INFO] [stdout]                                                                     inner: [
[INFO] [stdout]                                                                         Pair {
[INFO] [stdout]                                                                             rule: unary_operator_expr,
[INFO] [stdout]                                                                             span: Span {
[INFO] [stdout]                                                                                 str: "b",
[INFO] [stdout]                                                                                 start: 4,
[INFO] [stdout]                                                                                 end: 5,
[INFO] [stdout]                                                                             },
[INFO] [stdout]                                                                             inner: [
[INFO] [stdout]                                                                                 Pair {
[INFO] [stdout]                                                                                     rule: nested_expr,
[INFO] [stdout]                                                                                     span: Span {
[INFO] [stdout]                                                                                         str: "b",
[INFO] [stdout]                                                                                         start: 4,
[INFO] [stdout]                                                                                         end: 5,
[INFO] [stdout]                                                                                     },
[INFO] [stdout]                                                                                     inner: [
[INFO] [stdout]                                                                                         Pair {
[INFO] [stdout]                                                                                             rule: atom,
[INFO] [stdout]                                                                                             span: Span {
[INFO] [stdout]                                                                                                 str: "b",
[INFO] [stdout]                                                                                                 start: 4,
[INFO] [stdout]                                                                                                 end: 5,
[INFO] [stdout]                                                                                             },
[INFO] [stdout]                                                                                             inner: [],
[INFO] [stdout]                                                                                         },
[INFO] [stdout]                                                                                     ],
[INFO] [stdout]                                                                                 },
[INFO] [stdout]                                                                             ],
[INFO] [stdout]                                                                         },
[INFO] [stdout]                                                                     ],
[INFO] [stdout]                                                                 },
[INFO] [stdout]                                                             ],
[INFO] [stdout]                                                         },
[INFO] [stdout]                                                     ],
[INFO] [stdout]                                                 },
[INFO] [stdout]                                             ],
[INFO] [stdout]                                         },
[INFO] [stdout]                                         Pair {
[INFO] [stdout]                                             rule: expr,
[INFO] [stdout]                                             span: Span {
[INFO] [stdout]                                                 str: "a",
[INFO] [stdout]                                                 start: 10,
[INFO] [stdout]                                                 end: 11,
[INFO] [stdout]                                             },
[INFO] [stdout]                                             inner: [
[INFO] [stdout]                                                 Pair {
[INFO] [stdout]                                                     rule: bin_operator_expr,
[INFO] [stdout]                                                     span: Span {
[INFO] [stdout]                                                         str: "a",
[INFO] [stdout]                                                         start: 10,
[INFO] [stdout]                                                         end: 11,
[INFO] [stdout]                                                     },
[INFO] [stdout]                                                     inner: [
[INFO] [stdout]                                                         Pair {
[INFO] [stdout]                                                             rule: unary_operator_expr,
[INFO] [stdout]                                                             span: Span {
[INFO] [stdout]                                                                 str: "a",
[INFO] [stdout]                                                                 start: 10,
[INFO] [stdout]                                                                 end: 11,
[INFO] [stdout]                                                             },
[INFO] [stdout]                                                             inner: [
[INFO] [stdout]                                                                 Pair {
[INFO] [stdout]                                                                     rule: nested_expr,
[INFO] [stdout]                                                                     span: Span {
[INFO] [stdout]                                                                         str: "a",
[INFO] [stdout]                                                                         start: 10,
[INFO] [stdout]                                                                         end: 11,
[INFO] [stdout]                                                                     },
[INFO] [stdout]                                                                     inner: [
[INFO] [stdout]                                                                         Pair {
[INFO] [stdout]                                                                             rule: atom,
[INFO] [stdout]                                                                             span: Span {
[INFO] [stdout]                                                                                 str: "a",
[INFO] [stdout]                                                                                 start: 10,
[INFO] [stdout]                                                                                 end: 11,
[INFO] [stdout]                                                                             },
[INFO] [stdout]                                                                             inner: [],
[INFO] [stdout]                                                                         },
[INFO] [stdout]                                                                     ],
[INFO] [stdout]                                                                 },
[INFO] [stdout]                                                             ],
[INFO] [stdout]                                                         },
[INFO] [stdout]                                                     ],
[INFO] [stdout]                                                 },
[INFO] [stdout]                                             ],
[INFO] [stdout]                                         },
[INFO] [stdout]                                     ],
[INFO] [stdout]                                 },
[INFO] [stdout]                             ],
[INFO] [stdout]                         },
[INFO] [stdout]                     ],
[INFO] [stdout]                 },
[INFO] [stdout]             ],
[INFO] [stdout]         },
[INFO] [stdout]     ],
[INFO] [stdout] )
[INFO] [stdout] Ok(
[INFO] [stdout]     [
[INFO] [stdout]         Pair {
[INFO] [stdout]             rule: program,
[INFO] [stdout]             span: Span {
[INFO] [stdout]                 str: "a,b,c",
[INFO] [stdout]                 start: 0,
[INFO] [stdout]                 end: 5,
[INFO] [stdout]             },
[INFO] [stdout]             inner: [
[INFO] [stdout]                 Pair {
[INFO] [stdout]                     rule: statement,
[INFO] [stdout]                     span: Span {
[INFO] [stdout]                         str: "a",
[INFO] [stdout]                         start: 0,
[INFO] [stdout]                         end: 1,
[INFO] [stdout]                     },
[INFO] [stdout]                     inner: [
[INFO] [stdout]                         Pair {
[INFO] [stdout]                             rule: expr,
[INFO] [stdout]                             span: Span {
[INFO] [stdout]                                 str: "a",
[INFO] [stdout]                                 start: 0,
[INFO] [stdout]                                 end: 1,
[INFO] [stdout]                             },
[INFO] [stdout]                             inner: [
[INFO] [stdout]                                 Pair {
[INFO] [stdout]                                     rule: bin_operator_expr,
[INFO] [stdout]                                     span: Span {
[INFO] [stdout]                                         str: "a",
[INFO] [stdout]                                         start: 0,
[INFO] [stdout]                                         end: 1,
[INFO] [stdout]                                     },
[INFO] [stdout]                                     inner: [
[INFO] [stdout]                                         Pair {
[INFO] [stdout]                                             rule: unary_operator_expr,
[INFO] [stdout]                                             span: Span {
[INFO] [stdout]                                                 str: "a",
[INFO] [stdout]                                                 start: 0,
[INFO] [stdout]                                                 end: 1,
[INFO] [stdout]                                             },
[INFO] [stdout]                                             inner: [
[INFO] [stdout]                                                 Pair {
[INFO] [stdout]                                                     rule: nested_expr,
[INFO] [stdout]                                                     span: Span {
[INFO] [stdout]                                                         str: "a",
[INFO] [stdout]                                                         start: 0,
[INFO] [stdout]                                                         end: 1,
[INFO] [stdout]                                                     },
[INFO] [stdout]                                                     inner: [
[INFO] [stdout]                                                         Pair {
[INFO] [stdout]                                                             rule: atom,
[INFO] [stdout]                                                             span: Span {
[INFO] [stdout]                                                                 str: "a",
[INFO] [stdout]                                                                 start: 0,
[INFO] [stdout]                                                                 end: 1,
[INFO] [stdout]                                                             },
[INFO] [stdout]                                                             inner: [],
[INFO] [stdout]                                                         },
[INFO] [stdout]                                                     ],
[INFO] [stdout]                                                 },
[INFO] [stdout]                                             ],
[INFO] [stdout]                                         },
[INFO] [stdout]                                     ],
[INFO] [stdout]                                 },
[INFO] [stdout]                             ],
[INFO] [stdout]                         },
[INFO] [stdout]                     ],
[INFO] [stdout]                 },
[INFO] [stdout]                 Pair {
[INFO] [stdout]                     rule: statement,
[INFO] [stdout]                     span: Span {
[INFO] [stdout]                         str: "b",
[INFO] [stdout]                         start: 2,
[INFO] [stdout]                         end: 3,
[INFO] [stdout]                     },
[INFO] [stdout]                     inner: [
[INFO] [stdout]                         Pair {
[INFO] [stdout]                             rule: expr,
[INFO] [stdout]                             span: Span {
[INFO] [stdout]                                 str: "b",
[INFO] [stdout]                                 start: 2,
[INFO] [stdout]                                 end: 3,
[INFO] [stdout]                             },
[INFO] [stdout]                             inner: [
[INFO] [stdout]                                 Pair {
[INFO] [stdout]                                     rule: bin_operator_expr,
[INFO] [stdout]                                     span: Span {
[INFO] [stdout]                                         str: "b",
[INFO] [stdout]                                         start: 2,
[INFO] [stdout]                                         end: 3,
[INFO] [stdout]                                     },
[INFO] [stdout]                                     inner: [
[INFO] [stdout]                                         Pair {
[INFO] [stdout]                                             rule: unary_operator_expr,
[INFO] [stdout]                                             span: Span {
[INFO] [stdout]                                                 str: "b",
[INFO] [stdout]                                                 start: 2,
[INFO] [stdout]                                                 end: 3,
[INFO] [stdout]                                             },
[INFO] [stdout]                                             inner: [
[INFO] [stdout]                                                 Pair {
[INFO] [stdout]                                                     rule: nested_expr,
[INFO] [stdout]                                                     span: Span {
[INFO] [stdout]                                                         str: "b",
[INFO] [stdout]                                                         start: 2,
[INFO] [stdout]                                                         end: 3,
[INFO] [stdout]                                                     },
[INFO] [stdout]                                                     inner: [
[INFO] [stdout]                                                         Pair {
[INFO] [stdout]                                                             rule: atom,
[INFO] [stdout]                                                             span: Span {
[INFO] [stdout]                                                                 str: "b",
[INFO] [stdout]                                                                 start: 2,
[INFO] [stdout]                                                                 end: 3,
[INFO] [stdout]                                                             },
[INFO] [stdout]                                                             inner: [],
[INFO] [stdout]                                                         },
[INFO] [stdout]                                                     ],
[INFO] [stdout]                                                 },
[INFO] [stdout]                                             ],
[INFO] [stdout]                                         },
[INFO] [stdout]                                     ],
[INFO] [stdout]                                 },
[INFO] [stdout]                             ],
[INFO] [stdout]                         },
[INFO] [stdout]                     ],
[INFO] [stdout]                 },
[INFO] [stdout]                 Pair {
[INFO] [stdout]                     rule: statement,
[INFO] [stdout]                     span: Span {
[INFO] [stdout]                         str: "c",
[INFO] [stdout]                         start: 4,
[INFO] [stdout]                         end: 5,
[INFO] [stdout]                     },
[INFO] [stdout]                     inner: [
[INFO] [stdout]                         Pair {
[INFO] [stdout]                             rule: expr,
[INFO] [stdout]                             span: Span {
[INFO] [stdout]                                 str: "c",
[INFO] [stdout]                                 start: 4,
[INFO] [stdout]                                 end: 5,
[INFO] [stdout]                             },
[INFO] [stdout]                             inner: [
[INFO] [stdout]                                 Pair {
[INFO] [stdout]                                     rule: bin_operator_expr,
[INFO] [stdout]                                     span: Span {
[INFO] [stdout]                                         str: "c",
[INFO] [stdout]                                         start: 4,
[INFO] [stdout]                                         end: 5,
[INFO] [stdout]                                     },
[INFO] [stdout]                                     inner: [
[INFO] [stdout]                                         Pair {
[INFO] [stdout]                                             rule: unary_operator_expr,
[INFO] [stdout]                                             span: Span {
[INFO] [stdout]                                                 str: "c",
[INFO] [stdout]                                                 start: 4,
[INFO] [stdout]                                                 end: 5,
[INFO] [stdout]                                             },
[INFO] [stdout]                                             inner: [
[INFO] [stdout]                                                 Pair {
[INFO] [stdout]                                                     rule: nested_expr,
[INFO] [stdout]                                                     span: Span {
[INFO] [stdout]                                                         str: "c",
[INFO] [stdout]                                                         start: 4,
[INFO] [stdout]                                                         end: 5,
[INFO] [stdout]                                                     },
[INFO] [stdout]                                                     inner: [
[INFO] [stdout]                                                         Pair {
[INFO] [stdout]                                                             rule: atom,
[INFO] [stdout]                                                             span: Span {
[INFO] [stdout]                                                                 str: "c",
[INFO] [stdout]                                                                 start: 4,
[INFO] [stdout]                                                                 end: 5,
[INFO] [stdout]                                                             },
[INFO] [stdout]                                                             inner: [],
[INFO] [stdout]                                                         },
[INFO] [stdout]                                                     ],
[INFO] [stdout]                                                 },
[INFO] [stdout]                                             ],
[INFO] [stdout]                                         },
[INFO] [stdout]                                     ],
[INFO] [stdout]                                 },
[INFO] [stdout]                             ],
[INFO] [stdout]                         },
[INFO] [stdout]                     ],
[INFO] [stdout]                 },
[INFO] [stdout]             ],
[INFO] [stdout]         },
[INFO] [stdout]     ],
[INFO] [stdout] )
[INFO] [stdout] Ok(
[INFO] [stdout]     [
[INFO] [stdout]         Pair {
[INFO] [stdout]             rule: program,
[INFO] [stdout]             span: Span {
[INFO] [stdout]                 str: "a = 2",
[INFO] [stdout]                 start: 0,
[INFO] [stdout]                 end: 5,
[INFO] [stdout]             },
[INFO] [stdout]             inner: [
[INFO] [stdout]                 Pair {
[INFO] [stdout]                     rule: statement,
[INFO] [stdout]                     span: Span {
[INFO] [stdout]                         str: "a = 2",
[INFO] [stdout]                         start: 0,
[INFO] [stdout]                         end: 5,
[INFO] [stdout]                     },
[INFO] [stdout]                     inner: [
[INFO] [stdout]                         Pair {
[INFO] [stdout]                             rule: assignment,
[INFO] [stdout]                             span: Span {
[INFO] [stdout]                                 str: "a = 2",
[INFO] [stdout]                                 start: 0,
[INFO] [stdout]                                 end: 5,
[INFO] [stdout]                             },
[INFO] [stdout]                             inner: [
[INFO] [stdout]                                 Pair {
[INFO] [stdout]                                     rule: var_assign,
[INFO] [stdout]                                     span: Span {
[INFO] [stdout]                                         str: "a = 2",
[INFO] [stdout]                                         start: 0,
[INFO] [stdout]                                         end: 5,
[INFO] [stdout]                                     },
[INFO] [stdout]                                     inner: [
[INFO] [stdout]                                         Pair {
[INFO] [stdout]                                             rule: varname,
[INFO] [stdout]                                             span: Span {
[INFO] [stdout]                                                 str: "a",
[INFO] [stdout]                                                 start: 0,
[INFO] [stdout]                                                 end: 1,
[INFO] [stdout]                                             },
[INFO] [stdout]                                             inner: [],
[INFO] [stdout]                                         },
[INFO] [stdout]                                         Pair {
[INFO] [stdout]                                             rule: expr,
[INFO] [stdout]                                             span: Span {
[INFO] [stdout]                                                 str: "2",
[INFO] [stdout]                                                 start: 4,
[INFO] [stdout]                                                 end: 5,
[INFO] [stdout]                                             },
[INFO] [stdout]                                             inner: [
[INFO] [stdout]                                                 Pair {
[INFO] [stdout]                                                     rule: bin_operator_expr,
[INFO] [stdout]                                                     span: Span {
[INFO] [stdout]                                                         str: "2",
[INFO] [stdout]                                                         start: 4,
[INFO] [stdout]                                                         end: 5,
[INFO] [stdout]                                                     },
[INFO] [stdout]                                                     inner: [
[INFO] [stdout]                                                         Pair {
[INFO] [stdout]                                                             rule: unary_operator_expr,
[INFO] [stdout]                                                             span: Span {
[INFO] [stdout]                                                                 str: "2",
[INFO] [stdout]                                                                 start: 4,
[INFO] [stdout]                                                                 end: 5,
[INFO] [stdout]                                                             },
[INFO] [stdout]                                                             inner: [
[INFO] [stdout]                                                                 Pair {
[INFO] [stdout]                                                                     rule: nested_expr,
[INFO] [stdout]                                                                     span: Span {
[INFO] [stdout]                                                                         str: "2",
[INFO] [stdout]                                                                         start: 4,
[INFO] [stdout]                                                                         end: 5,
[INFO] [stdout]                                                                     },
[INFO] [stdout]                                                                     inner: [
[INFO] [stdout]                                                                         Pair {
[INFO] [stdout]                                                                             rule: atom,
[INFO] [stdout]                                                                             span: Span {
[INFO] [stdout]                                                                                 str: "2",
[INFO] [stdout]                                                                                 start: 4,
[INFO] [stdout]                                                                                 end: 5,
[INFO] [stdout]                                                                             },
[INFO] [stdout]                                                                             inner: [
[INFO] [stdout]                                                                                 Pair {
[INFO] [stdout]                                                                                     rule: number,
[INFO] [stdout]                                                                                     span: Span {
[INFO] [stdout]                                                                                         str: "2",
[INFO] [stdout]                                                                                         start: 4,
[INFO] [stdout]                                                                                         end: 5,
[INFO] [stdout]                                                                                     },
[INFO] [stdout]                                                                                     inner: [
[INFO] [stdout]                                                                                         Pair {
[INFO] [stdout]                                                                                             rule: integer,
[INFO] [stdout]                                                                                             span: Span {
[INFO] [stdout]                                                                                                 str: "2",
[INFO] [stdout]                                                                                                 start: 4,
[INFO] [stdout]                                                                                                 end: 5,
[INFO] [stdout]                                                                                             },
[INFO] [stdout]                                                                                             inner: [],
[INFO] [stdout]                                                                                         },
[INFO] [stdout]                                                                                     ],
[INFO] [stdout]                                                                                 },
[INFO] [stdout]                                                                             ],
[INFO] [stdout]                                                                         },
[INFO] [stdout]                                                                     ],
[INFO] [stdout]                                                                 },
[INFO] [stdout]                                                             ],
[INFO] [stdout]                                                         },
[INFO] [stdout]                                                     ],
[INFO] [stdout]                                                 },
[INFO] [stdout]                                             ],
[INFO] [stdout]                                         },
[INFO] [stdout]                                     ],
[INFO] [stdout]                                 },
[INFO] [stdout]                             ],
[INFO] [stdout]                         },
[INFO] [stdout]                     ],
[INFO] [stdout]                 },
[INFO] [stdout]             ],
[INFO] [stdout]         },
[INFO] [stdout]     ],
[INFO] [stdout] )
[INFO] [stdout] 
[INFO] [stdout] thread 'interpreter::parser::test::test' (17) panicked at src/interpreter/parser.rs:62:9:
[INFO] [stdout] assertion failed: false
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5d499440c3e2 - std::backtrace_rs::backtrace::libunwind::trace::hcab59e1e990fdc24
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5d499440c3e2 - std::backtrace_rs::backtrace::trace_unsynchronized::he24cc57f3d2f47b7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5d499440c3e2 - std::sys::backtrace::_print_fmt::hf8d65ede198eeb54
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5d499440c3e2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h67edf0e4d33c343c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5d499441c5cf - core::fmt::rt::Argument::fmt::hef94184842aeafdd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5d499441c5cf - core::fmt::write::hcf0c66b48a8fa606
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x5d49943d9841 - std::io::default_write_fmt::h69967ac0ba93195f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5d49943d9841 - std::io::Write::write_fmt::h8db9396209deaa1c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5d49943e58a2 - std::sys::backtrace::BacktraceLock::print::h07e5435aa717b414
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5d49943ea44f - std::panicking::default_hook::{{closure}}::h91001850288db5f7
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x5d49943ea2e1 - std::panicking::default_hook::h2346dbb704ef5512
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x5d49943a4f9e - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h18383b2e29377420
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   12:     0x5d49943a4f9e - test::test_main_with_exit_callback::{{closure}}::h272d7ef99aef06dc
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5d49943eab0f - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h6dba6e441651a0d1
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   14:     0x5d49943eab0f - std::panicking::panic_with_hook::hd2b063a6090d23a4
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x5d49943ea936 - std::panicking::panic_handler::{{closure}}::he666d95f139a333e
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:700:13
[INFO] [stdout]   16:     0x5d49943e59d9 - std::sys::backtrace::__rust_end_short_backtrace::h631ad224854ebee5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x5d49943cdd1d - __rustc[1d67440d6e82e4f]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x5d49944240f0 - core::panicking::panic_fmt::h420ddb7fd73daf53
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x5d49944240cc - core::panicking::panic::h355c5fec13755e30
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panicking.rs:145:5
[INFO] [stdout]   20:     0x5d4994381d75 - fraction_interpreter::interpreter::parser::test::test::h6cb295814af59ec1
[INFO] [stdout]                                at /opt/rustwide/workdir/src/interpreter/parser.rs:62:9
[INFO] [stdout]   21:     0x5d4994381da7 - fraction_interpreter::interpreter::parser::test::test::{{closure}}::h7df2ed6ac944d038
[INFO] [stdout]                                at /opt/rustwide/workdir/src/interpreter/parser.rs:49:14
[INFO] [stdout]   22:     0x5d499437df16 - core::ops::function::FnOnce::call_once::h9c2a76de304ff702
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x5d49943a4d5b - core::ops::function::FnOnce::call_once::h70887edf07a630ba
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x5d49943a4d5b - test::__rust_begin_short_backtrace::h27763c4cbbdb8601
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:663:18
[INFO] [stdout]   25:     0x5d49943ba9c5 - test::run_test_in_process::{{closure}}::h4dc8bc6d5e3924d3
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:686:74
[INFO] [stdout]   26:     0x5d49943ba9c5 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h75905e8ffe81974f
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   27:     0x5d49943ba9c5 - std::panicking::catch_unwind::do_call::h0bc60366ba66eba5
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   28:     0x5d49943ba9c5 - std::panicking::catch_unwind::hae1ec7bf94407afa
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   29:     0x5d49943ba9c5 - std::panic::catch_unwind::h0f4ff4773d84d3cd
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   30:     0x5d49943ba9c5 - test::run_test_in_process::h03fbc77ae48b3f10
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:686:27
[INFO] [stdout]   31:     0x5d49943ba9c5 - test::run_test::{{closure}}::h83476a9c453dc4d3
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:607:43
[INFO] [stdout]   32:     0x5d49943911b4 - test::run_test::{{closure}}::h515482ad1e7fe7de
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/test/src/lib.rs:637:41
[INFO] [stdout]   33:     0x5d49943911b4 - std::sys::backtrace::__rust_begin_short_backtrace::hed09f6ac5fe9d647
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   34:     0x5d4994394a7a - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h988e2cd969319888
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   35:     0x5d4994394a7a - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd70e28dc46ec20be
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/panic/unwind_safe.rs:274:9
[INFO] [stdout]   36:     0x5d4994394a7a - std::panicking::catch_unwind::do_call::hdc29e11311eb7655
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:590:40
[INFO] [stdout]   37:     0x5d4994394a7a - std::panicking::catch_unwind::h9e402d6a96fef41c
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panicking.rs:553:19
[INFO] [stdout]   38:     0x5d4994394a7a - std::panic::catch_unwind::h9213c0c54aec70e0
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x5d4994394a7a - std::thread::Builder::spawn_unchecked_::{{closure}}::h6262965869ed2b87
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   40:     0x5d4994394a7a - core::ops::function::FnOnce::call_once{{vtable.shim}}::h05c05ed02619e462
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   41:     0x5d49943e0b3f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h2044e71c41d3958a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   42:     0x5d49943e0b3f - std::sys::thread::unix::Thread::new::thread_start::hf277835320aa8e5a
[INFO] [stdout]                                at /rustc/bb624dcb4c8ab987e10c0808d92d76f3b84dd117/library/std/src/sys/thread/unix.rs:126:17
[INFO] [stdout]   43:     0x7c3cc1188aa4 - <unknown>
[INFO] [stdout]   44:     0x7c3cc1215a34 - clone
[INFO] [stdout]   45:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     interpreter::parser::test::test
[INFO] [stdout]     interpreter::test::name
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.02s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "368ce4708b1edd2f825460f4cbd32eef10f0140f62a29303ec4a9652c28227e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "368ce4708b1edd2f825460f4cbd32eef10f0140f62a29303ec4a9652c28227e0", kill_on_drop: false }`
[INFO] [stdout] 368ce4708b1edd2f825460f4cbd32eef10f0140f62a29303ec4a9652c28227e0
