[INFO] cloning repository https://github.com/rgvbansal/rusty_lox
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rgvbansal/rusty_lox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frgvbansal%2Frusty_lox", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frgvbansal%2Frusty_lox'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 83cf539e4afa5f3ee75cc128d6a072e4e301ea8c
[INFO] checking rgvbansal/rusty_lox against 1.95.0 for pr-155915
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frgvbansal%2Frusty_lox" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rgvbansal/rusty_lox
[INFO] finished tweaking git repo https://github.com/rgvbansal/rusty_lox
[INFO] tweaked toml for git repo https://github.com/rgvbansal/rusty_lox written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rgvbansal/rusty_lox on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rgvbansal/rusty_lox already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded clap_derive v3.2.18
[INFO] [stderr]   Downloaded more-asserts v0.3.1
[INFO] [stderr]   Downloaded test-generator v0.3.0
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1697d54560302291c71ad360a92fb34e98d42bb17c5d02e6070c919956e63982
[INFO] running `Command { std: "docker" "start" "-a" "1697d54560302291c71ad360a92fb34e98d42bb17c5d02e6070c919956e63982", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1697d54560302291c71ad360a92fb34e98d42bb17c5d02e6070c919956e63982", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1697d54560302291c71ad360a92fb34e98d42bb17c5d02e6070c919956e63982", kill_on_drop: false }`
[INFO] [stdout] 1697d54560302291c71ad360a92fb34e98d42bb17c5d02e6070c919956e63982
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a22688cf6b14073408934de498b8272aa6e7ddc9cbd9fae7f15ab2c05707db9e
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[INFO] [stderr]    Compiling proc-macro2 v1.0.47
[INFO] [stderr]    Compiling unicode-ident v1.0.5
[INFO] [stderr]    Compiling syn v1.0.102
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]    Compiling thiserror v1.0.37
[INFO] [stderr]    Compiling libc v0.2.137
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[INFO] [stderr]    Compiling heck v0.4.0
[INFO] [stderr]     Checking os_str_bytes v6.3.1
[INFO] [stderr]     Checking textwrap v0.16.0
[INFO] [stderr]     Checking indexmap v1.9.1
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]     Checking more-asserts v0.3.1
[INFO] [stderr]     Checking aho-corasick v0.7.19
[INFO] [stderr]     Checking regex-syntax v0.6.27
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]     Checking clap_lex v0.2.4
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking regex v1.6.0
[INFO] [stderr]    Compiling test-generator v0.3.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling toml v0.5.9
[INFO] [stderr]    Compiling thiserror-impl v1.0.37
[INFO] [stderr]    Compiling clap_derive v3.2.18
[INFO] [stderr]    Compiling proc-macro-crate v1.2.1
[INFO] [stderr]    Compiling num_enum_derive v0.5.7
[INFO] [stderr]     Checking clap v3.2.23
[INFO] [stderr]     Checking num_enum v0.5.7
[INFO] [stderr]     Checking rusty_lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: method `sweep` is never used
[INFO] [stdout]    --> src/bytecode_vm/gc.rs:150:8
[INFO] [stdout]     |
[INFO] [stdout] 149 | pub trait Heap {
[INFO] [stdout]     |           ---- method in this trait
[INFO] [stdout] 150 |     fn sweep(&mut self);
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `sweep` is never used
[INFO] [stdout]    --> src/bytecode_vm/gc.rs:150:8
[INFO] [stdout]     |
[INFO] [stdout] 149 | pub trait Heap {
[INFO] [stdout]     |           ---- method in this trait
[INFO] [stdout] 150 |     fn sweep(&mut self);
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chunk::Chunk`
[INFO] [stdout]   --> src/bytecode_vm/mod.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use chunk::Chunk;
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `opcode::OpCode`
[INFO] [stdout]   --> src/bytecode_vm/mod.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub use opcode::OpCode;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `value::Value`
[INFO] [stdout]   --> src/bytecode_vm/mod.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub use value::Value;
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lexer::Lexer`
[INFO] [stdout]   --> src/lox_frontend/mod.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use lexer::Lexer;
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `chunk::Chunk`
[INFO] [stdout]   --> src/bytecode_vm/mod.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use chunk::Chunk;
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `opcode::OpCode`
[INFO] [stdout]   --> src/bytecode_vm/mod.rs:13:9
[INFO] [stdout]    |
[INFO] [stdout] 13 | pub use opcode::OpCode;
[INFO] [stdout]    |         ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `value::Value`
[INFO] [stdout]   --> src/bytecode_vm/mod.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 | pub use value::Value;
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `lexer::Lexer`
[INFO] [stdout]   --> src/lox_frontend/mod.rs:11:9
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub use lexer::Lexer;
[INFO] [stdout]    |         ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_empty`, `disassemble`, and `disassemble_at_offset` are never used
[INFO] [stdout]    --> src/bytecode_vm/chunk.rs:51:12
[INFO] [stdout]     |
[INFO] [stdout]  38 | impl Chunk {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  51 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |     pub fn disassemble(&self, name: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 123 |     pub fn disassemble_at_offset(&self, offset: usize) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/bytecode_vm/errors.rs:13:25
[INFO] [stdout]    |
[INFO] [stdout] 13 |     CannotParseConstant(ChunkConstant),
[INFO] [stdout]    |     ------------------- ^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `VmError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 13 -     CannotParseConstant(ChunkConstant),
[INFO] [stdout] 13 +     CannotParseConstant(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/bytecode_vm/errors.rs:33:28
[INFO] [stdout]    |
[INFO] [stdout] 33 |     UseVarInInitialization(String),
[INFO] [stdout]    |     ---------------------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CompilerError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 33 -     UseVarInInitialization(String),
[INFO] [stdout] 33 +     UseVarInInitialization(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/bytecode_vm/errors.rs:34:28
[INFO] [stdout]    |
[INFO] [stdout] 34 |     LocalVarDefinedAlready(String),
[INFO] [stdout]    |     ---------------------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CompilerError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 34 -     LocalVarDefinedAlready(String),
[INFO] [stdout] 34 +     LocalVarDefinedAlready(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/bytecode_vm/errors.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |     SelfInherit(String),
[INFO] [stdout]    |     ----------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CompilerError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 36 -     SelfInherit(String),
[INFO] [stdout] 36 +     SelfInherit(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `sweep` is never used
[INFO] [stdout]    --> src/bytecode_vm/gc.rs:150:8
[INFO] [stdout]     |
[INFO] [stdout] 149 | pub trait Heap {
[INFO] [stdout]     |           ---- method in this trait
[INFO] [stdout] 150 |     fn sweep(&mut self);
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/bytecode_vm/opcode.rs:19:28
[INFO] [stdout]    |
[INFO] [stdout] 19 |     UnknownUpvalueLocation(u8),
[INFO] [stdout]    |     ---------------------- ^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `OpCodeError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 19 -     UnknownUpvalueLocation(u8),
[INFO] [stdout] 19 +     UnknownUpvalueLocation(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `insert` and `len` are never used
[INFO] [stdout]   --> src/bytecode_vm/string_interner.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl StringInterner {
[INFO] [stdout]    | ------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn insert<S>(&mut self, string: S)
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/lox_frontend/errors.rs:30:18
[INFO] [stdout]    |
[INFO] [stdout] 30 |     ExpectedExpr(Token),
[INFO] [stdout]    |     ------------ ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParserErrorType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 30 -     ExpectedExpr(Token),
[INFO] [stdout] 30 +     ExpectedExpr(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `symbol` is never used
[INFO] [stdout]    --> src/lox_frontend/grammar.rs:103:12
[INFO] [stdout]     |
[INFO] [stdout] 102 | impl LogicalOperator {
[INFO] [stdout]     | -------------------- method in this implementation
[INFO] [stdout] 103 |     pub fn symbol(&self) -> &str {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `symbol` is never used
[INFO] [stdout]    --> src/lox_frontend/grammar.rs:112:12
[INFO] [stdout]     |
[INFO] [stdout] 111 | impl PrefixOperator {
[INFO] [stdout]     | ------------------- method in this implementation
[INFO] [stdout] 112 |     pub fn symbol(&self) -> &str {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `symbol` is never used
[INFO] [stdout]    --> src/lox_frontend/grammar.rs:121:12
[INFO] [stdout]     |
[INFO] [stdout] 120 | impl InfixOperator {
[INFO] [stdout]     | ------------------ method in this implementation
[INFO] [stdout] 121 |     pub fn symbol(&self) -> &str {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `ast_string` is never used
[INFO] [stdout]    --> src/lox_frontend/grammar.rs:165:12
[INFO] [stdout]     |
[INFO] [stdout] 160 | impl Expr {
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 165 |     pub fn ast_string(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter` is never used
[INFO] [stdout]    --> src/lox_frontend/lexer.rs:187:12
[INFO] [stdout]     |
[INFO] [stdout]  10 | impl<'src> Lexer<'src> {
[INFO] [stdout]     | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 187 |     pub fn iter(self) -> LexerIterator<'src> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LexerIterator` is never constructed
[INFO] [stdout]    --> src/lox_frontend/lexer.rs:192:12
[INFO] [stdout]     |
[INFO] [stdout] 192 | pub struct LexerIterator<'src> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `span` is never read
[INFO] [stdout]   --> src/treewalk_interpreter/grammar.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Stmt {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 16 |     pub stmt: StmtType,
[INFO] [stdout] 17 |     pub span: Span,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `span` is never read
[INFO] [stdout]   --> src/treewalk_interpreter/grammar.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct Expr {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 35 |     pub expr: ExprType,
[INFO] [stdout] 36 |     pub span: Span,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Expr` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/treewalk_interpreter/resolver.rs:41:28
[INFO] [stdout]    |
[INFO] [stdout] 41 |     UseVarInInitialization(String),
[INFO] [stdout]    |     ---------------------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ResolverError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 41 -     UseVarInInitialization(String),
[INFO] [stdout] 41 +     UseVarInInitialization(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/treewalk_interpreter/resolver.rs:42:28
[INFO] [stdout]    |
[INFO] [stdout] 42 |     LocalVarDefinedAlready(String),
[INFO] [stdout]    |     ---------------------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ResolverError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 42 -     LocalVarDefinedAlready(String),
[INFO] [stdout] 42 +     LocalVarDefinedAlready(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `is_empty`, `disassemble`, and `disassemble_at_offset` are never used
[INFO] [stdout]    --> src/bytecode_vm/chunk.rs:51:12
[INFO] [stdout]     |
[INFO] [stdout]  38 | impl Chunk {
[INFO] [stdout]     | ---------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  51 |     pub fn is_empty(&self) -> bool {
[INFO] [stdout]     |            ^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 114 |     pub fn disassemble(&self, name: &str) {
[INFO] [stdout]     |            ^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 123 |     pub fn disassemble_at_offset(&self, offset: usize) -> usize {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/bytecode_vm/errors.rs:13:25
[INFO] [stdout]    |
[INFO] [stdout] 13 |     CannotParseConstant(ChunkConstant),
[INFO] [stdout]    |     ------------------- ^^^^^^^^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `VmError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 13 -     CannotParseConstant(ChunkConstant),
[INFO] [stdout] 13 +     CannotParseConstant(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/bytecode_vm/errors.rs:33:28
[INFO] [stdout]    |
[INFO] [stdout] 33 |     UseVarInInitialization(String),
[INFO] [stdout]    |     ---------------------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CompilerError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 33 -     UseVarInInitialization(String),
[INFO] [stdout] 33 +     UseVarInInitialization(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/bytecode_vm/errors.rs:34:28
[INFO] [stdout]    |
[INFO] [stdout] 34 |     LocalVarDefinedAlready(String),
[INFO] [stdout]    |     ---------------------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CompilerError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 34 -     LocalVarDefinedAlready(String),
[INFO] [stdout] 34 +     LocalVarDefinedAlready(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/bytecode_vm/errors.rs:36:17
[INFO] [stdout]    |
[INFO] [stdout] 36 |     SelfInherit(String),
[INFO] [stdout]    |     ----------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `CompilerError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 36 -     SelfInherit(String),
[INFO] [stdout] 36 +     SelfInherit(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `sweep` is never used
[INFO] [stdout]    --> src/bytecode_vm/gc.rs:150:8
[INFO] [stdout]     |
[INFO] [stdout] 149 | pub trait Heap {
[INFO] [stdout]     |           ---- method in this trait
[INFO] [stdout] 150 |     fn sweep(&mut self);
[INFO] [stdout]     |        ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/bytecode_vm/opcode.rs:19:28
[INFO] [stdout]    |
[INFO] [stdout] 19 |     UnknownUpvalueLocation(u8),
[INFO] [stdout]    |     ---------------------- ^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `OpCodeError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 19 -     UnknownUpvalueLocation(u8),
[INFO] [stdout] 19 +     UnknownUpvalueLocation(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `insert` and `len` are never used
[INFO] [stdout]   --> src/bytecode_vm/string_interner.rs:32:12
[INFO] [stdout]    |
[INFO] [stdout] 10 | impl StringInterner {
[INFO] [stdout]    | ------------------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 32 |     pub fn insert<S>(&mut self, string: S)
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 43 |     pub fn len(&self) -> usize {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/lox_frontend/errors.rs:30:18
[INFO] [stdout]    |
[INFO] [stdout] 30 |     ExpectedExpr(Token),
[INFO] [stdout]    |     ------------ ^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ParserErrorType` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 30 -     ExpectedExpr(Token),
[INFO] [stdout] 30 +     ExpectedExpr(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `symbol` is never used
[INFO] [stdout]    --> src/lox_frontend/grammar.rs:103:12
[INFO] [stdout]     |
[INFO] [stdout] 102 | impl LogicalOperator {
[INFO] [stdout]     | -------------------- method in this implementation
[INFO] [stdout] 103 |     pub fn symbol(&self) -> &str {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `symbol` is never used
[INFO] [stdout]    --> src/lox_frontend/grammar.rs:112:12
[INFO] [stdout]     |
[INFO] [stdout] 111 | impl PrefixOperator {
[INFO] [stdout]     | ------------------- method in this implementation
[INFO] [stdout] 112 |     pub fn symbol(&self) -> &str {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `symbol` is never used
[INFO] [stdout]    --> src/lox_frontend/grammar.rs:121:12
[INFO] [stdout]     |
[INFO] [stdout] 120 | impl InfixOperator {
[INFO] [stdout]     | ------------------ method in this implementation
[INFO] [stdout] 121 |     pub fn symbol(&self) -> &str {
[INFO] [stdout]     |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `ast_string` is never used
[INFO] [stdout]    --> src/lox_frontend/grammar.rs:165:12
[INFO] [stdout]     |
[INFO] [stdout] 160 | impl Expr {
[INFO] [stdout]     | --------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 165 |     pub fn ast_string(&self) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `iter` is never used
[INFO] [stdout]    --> src/lox_frontend/lexer.rs:187:12
[INFO] [stdout]     |
[INFO] [stdout]  10 | impl<'src> Lexer<'src> {
[INFO] [stdout]     | ---------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 187 |     pub fn iter(self) -> LexerIterator<'src> {
[INFO] [stdout]     |            ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `LexerIterator` is never constructed
[INFO] [stdout]    --> src/lox_frontend/lexer.rs:192:12
[INFO] [stdout]     |
[INFO] [stdout] 192 | pub struct LexerIterator<'src> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `span` is never read
[INFO] [stdout]   --> src/treewalk_interpreter/grammar.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 15 | pub struct Stmt {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 16 |     pub stmt: StmtType,
[INFO] [stdout] 17 |     pub span: Span,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Stmt` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `span` is never read
[INFO] [stdout]   --> src/treewalk_interpreter/grammar.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 34 | pub struct Expr {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] 35 |     pub expr: ExprType,
[INFO] [stdout] 36 |     pub span: Span,
[INFO] [stdout]    |         ^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Expr` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/treewalk_interpreter/resolver.rs:41:28
[INFO] [stdout]    |
[INFO] [stdout] 41 |     UseVarInInitialization(String),
[INFO] [stdout]    |     ---------------------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ResolverError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 41 -     UseVarInInitialization(String),
[INFO] [stdout] 41 +     UseVarInInitialization(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]   --> src/treewalk_interpreter/resolver.rs:42:28
[INFO] [stdout]    |
[INFO] [stdout] 42 |     LocalVarDefinedAlready(String),
[INFO] [stdout]    |     ---------------------- ^^^^^^
[INFO] [stdout]    |     |
[INFO] [stdout]    |     field in this variant
[INFO] [stdout]    |
[INFO] [stdout]    = note: `ResolverError` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] help: consider changing the field to be of unit type to suppress this warning while preserving the field numbering, or remove the field
[INFO] [stdout]    |
[INFO] [stdout] 42 -     LocalVarDefinedAlready(String),
[INFO] [stdout] 42 +     LocalVarDefinedAlready(()),
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 13.76s
[INFO] running `Command { std: "docker" "inspect" "a22688cf6b14073408934de498b8272aa6e7ddc9cbd9fae7f15ab2c05707db9e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a22688cf6b14073408934de498b8272aa6e7ddc9cbd9fae7f15ab2c05707db9e", kill_on_drop: false }`
[INFO] [stdout] a22688cf6b14073408934de498b8272aa6e7ddc9cbd9fae7f15ab2c05707db9e
