[INFO] cloning repository https://github.com/Darksecond/lox
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Darksecond/lox" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDarksecond%2Flox"`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDarksecond%2Flox'...
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] afcdd08c65669a78c15a37f8113101a145a5d274
[INFO] checking Darksecond/lox against master#2748a9fd93dd1a00a4521f4f16de5befbf77f6cd for pr-62262-1
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FDarksecond%2Flox" "/workspace/builds/worker-5/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Darksecond/lox on toolchain 2748a9fd93dd1a00a4521f4f16de5befbf77f6cd
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/Darksecond/lox
[INFO] finished tweaking git repo https://github.com/Darksecond/lox
[INFO] tweaked toml for git repo https://github.com/Darksecond/lox written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/Darksecond/lox already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+2748a9fd93dd1a00a4521f4f16de5befbf77f6cd" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] bf84acd0fa280884dcd09d5c6abd62a590d5516aaf2cb09fb381187b2241ef33
[INFO] running `"docker" "start" "-a" "bf84acd0fa280884dcd09d5c6abd62a590d5516aaf2cb09fb381187b2241ef33"`
[INFO] [stderr]     Checking lox v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/bettergc.rs:10:21
[INFO] [stderr]    |
[INFO] [stderr] 10 | impl fmt::Debug for Trace {
[INFO] [stderr]    |                     ^^^^^ help: use `dyn`: `dyn Trace`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'tokenizer::Lexer::<'a>::tokenize': Please use `tokenize_with_context` instead.
[INFO] [stderr]    --> src/tokenizer.rs:300:7
[INFO] [stderr]     |
[INFO] [stderr] 300 |     t.tokenize()
[INFO] [stderr]     |       ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/bettergc.rs:10:21
[INFO] [stderr]    |
[INFO] [stderr] 10 | impl fmt::Debug for Trace {
[INFO] [stderr]    |                     ^^^^^ help: use `dyn`: `dyn Trace`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `crate::bytecode::Instruction::*`
[INFO] [stderr]    --> src/bettercompiler/tests.rs:116:9
[INFO] [stderr]     |
[INFO] [stderr] 116 |     use crate::bytecode::Instruction::*;
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `instructions`
[INFO] [stderr]    --> src/bettercompiler/compiler.rs:110:40
[INFO] [stderr]     |
[INFO] [stderr] 110 |     pub fn add_instructions(&mut self, instructions: &[Instruction]) -> Result<InstructionIndex, CompilerError> {
[INFO] [stderr]     |                                        ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_instructions`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `instruction`
[INFO] [stderr]    --> src/bettercompiler/compiler.rs:114:41
[INFO] [stderr]     |
[INFO] [stderr] 114 |     pub fn patch_instruction(&mut self, instruction: InstructionIndex) -> Result<(), CompilerError> {
[INFO] [stderr]     |                                         ^^^^^^^^^^^ help: consider prefixing with an underscore: `_instruction`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/bettercompiler/compiler.rs:144:39
[INFO] [stderr]     |
[INFO] [stderr] 144 |     pub fn resolve_upvalue(&mut self, name: &str) -> Result<Option<StackIndex>, CompilerError> {
[INFO] [stderr]     |                                       ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'tokenizer::Lexer::<'a>::tokenize': Please use `tokenize_with_context` instead.
[INFO] [stderr]    --> src/tokenizer.rs:300:7
[INFO] [stderr]     |
[INFO] [stderr] 300 |     t.tokenize()
[INFO] [stderr]     |       ^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `*self.state` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/vm.rs:158:25
[INFO] [stderr]     |
[INFO] [stderr] 156 |                     let value = self.state.globals.get(identifier);
[INFO] [stderr]     |                                 ------------------ immutable borrow occurs here
[INFO] [stderr] 157 |                     if let Some(value) = value {
[INFO] [stderr] 158 |                         self.state.push(*value);
[INFO] [stderr]     |                         ^^^^^^^^^^      ------ immutable borrow later used here
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         mutable borrow occurs here
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `constants`
[INFO] [stderr]   --> src/bytecode.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     constants: Vec<Constant>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Function`
[INFO] [stderr]   --> src/bettercompiler/compiler.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Function,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Initializer`
[INFO] [stderr]   --> src/bettercompiler/compiler.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Initializer,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Method`
[INFO] [stderr]   --> src/bettercompiler/compiler.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Method,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `context_type`
[INFO] [stderr]   --> src/bettercompiler/compiler.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     context_type: ContextType,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `context_type`
[INFO] [stderr]   --> src/bettercompiler/compiler.rs:80:5
[INFO] [stderr]    |
[INFO] [stderr] 80 |     pub fn context_type(&self) -> Result<ContextType, CompilerError> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_instructions`
[INFO] [stderr]    --> src/bettercompiler/compiler.rs:110:5
[INFO] [stderr]     |
[INFO] [stderr] 110 |     pub fn add_instructions(&mut self, instructions: &[Instruction]) -> Result<InstructionIndex, CompilerError> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `patch_instruction`
[INFO] [stderr]    --> src/bettercompiler/compiler.rs:114:5
[INFO] [stderr]     |
[INFO] [stderr] 114 |     pub fn patch_instruction(&mut self, instruction: InstructionIndex) -> Result<(), CompilerError> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `resolve_upvalue`
[INFO] [stderr]    --> src/bettercompiler/compiler.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     pub fn resolve_upvalue(&mut self, name: &str) -> Result<Option<StackIndex>, CompilerError> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `instructions`
[INFO] [stderr]    --> src/bettercompiler/compiler.rs:110:40
[INFO] [stderr]     |
[INFO] [stderr] 110 |     pub fn add_instructions(&mut self, instructions: &[Instruction]) -> Result<InstructionIndex, CompilerError> {
[INFO] [stderr]     |                                        ^^^^^^^^^^^^ help: consider prefixing with an underscore: `_instructions`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `instruction`
[INFO] [stderr]    --> src/bettercompiler/compiler.rs:114:41
[INFO] [stderr]     |
[INFO] [stderr] 114 |     pub fn patch_instruction(&mut self, instruction: InstructionIndex) -> Result<(), CompilerError> {
[INFO] [stderr]     |                                         ^^^^^^^^^^^ help: consider prefixing with an underscore: `_instruction`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/bettercompiler/compiler.rs:144:39
[INFO] [stderr]     |
[INFO] [stderr] 144 |     pub fn resolve_upvalue(&mut self, name: &str) -> Result<Option<StackIndex>, CompilerError> {
[INFO] [stderr]     |                                       ^^^^ help: consider prefixing with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `compile`
[INFO] [stderr]  --> src/main.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn compile(ast: &Vec<Stmt>) -> Chunk {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: cannot borrow `*self.state` as mutable because it is also borrowed as immutable
[INFO] [stderr]    --> src/vm.rs:158:25
[INFO] [stderr]     |
[INFO] [stderr] 156 |                     let value = self.state.globals.get(identifier);
[INFO] [stderr]     |                                 ------------------ immutable borrow occurs here
[INFO] [stderr] 157 |                     if let Some(value) = value {
[INFO] [stderr] 158 |                         self.state.push(*value);
[INFO] [stderr]     |                         ^^^^^^^^^^      ------ immutable borrow later used here
[INFO] [stderr]     |                         |
[INFO] [stderr]     |                         mutable borrow occurs here
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default
[INFO] [stderr]     = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future
[INFO] [stderr]     = note: for more information, see issue #59159 <https://github.com/rust-lang/rust/issues/59159>
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `constants`
[INFO] [stderr]   --> src/bytecode.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     constants: Vec<Constant>,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Function`
[INFO] [stderr]   --> src/bettercompiler/compiler.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Function,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Initializer`
[INFO] [stderr]   --> src/bettercompiler/compiler.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     Initializer,
[INFO] [stderr]    |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Method`
[INFO] [stderr]   --> src/bettercompiler/compiler.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     Method,
[INFO] [stderr]    |     ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `context_type`
[INFO] [stderr]   --> src/bettercompiler/compiler.rs:20:5
[INFO] [stderr]    |
[INFO] [stderr] 20 |     context_type: ContextType,
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `context_type`
[INFO] [stderr]   --> src/bettercompiler/compiler.rs:80:5
[INFO] [stderr]    |
[INFO] [stderr] 80 |     pub fn context_type(&self) -> Result<ContextType, CompilerError> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `add_instructions`
[INFO] [stderr]    --> src/bettercompiler/compiler.rs:110:5
[INFO] [stderr]     |
[INFO] [stderr] 110 |     pub fn add_instructions(&mut self, instructions: &[Instruction]) -> Result<InstructionIndex, CompilerError> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `patch_instruction`
[INFO] [stderr]    --> src/bettercompiler/compiler.rs:114:5
[INFO] [stderr]     |
[INFO] [stderr] 114 |     pub fn patch_instruction(&mut self, instruction: InstructionIndex) -> Result<(), CompilerError> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `resolve_upvalue`
[INFO] [stderr]    --> src/bettercompiler/compiler.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     pub fn resolve_upvalue(&mut self, name: &str) -> Result<Option<StackIndex>, CompilerError> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `compile`
[INFO] [stderr]  --> src/main.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn compile(ast: &Vec<Stmt>) -> Chunk {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.92s
[INFO] running `"docker" "inspect" "bf84acd0fa280884dcd09d5c6abd62a590d5516aaf2cb09fb381187b2241ef33"`
[INFO] running `"docker" "rm" "-f" "bf84acd0fa280884dcd09d5c6abd62a590d5516aaf2cb09fb381187b2241ef33"`
[INFO] [stdout] bf84acd0fa280884dcd09d5c6abd62a590d5516aaf2cb09fb381187b2241ef33