[INFO] cloning repository https://github.com/rdaum/rol
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/rdaum/rol" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frdaum%2Frol", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frdaum%2Frol'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c05f093d5640a904751d2932d9060a9d746eddba
[INFO] checking rdaum/rol against dfbea5bc945a9d7ff017d3d4bfbd1af9295fe5b8 for pr-133502-26
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Frdaum%2Frol" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/rdaum/rol
[INFO] finished tweaking git repo https://github.com/rdaum/rol
[INFO] tweaked toml for git repo https://github.com/rdaum/rol written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/rdaum/rol on toolchain dfbea5bc945a9d7ff017d3d4bfbd1af9295fe5b8
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+dfbea5bc945a9d7ff017d3d4bfbd1af9295fe5b8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/rdaum/rol 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" "+dfbea5bc945a9d7ff017d3d4bfbd1af9295fe5b8" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:1fa6594d87c8fa7b311925a7a77a16f539833322d9dfba4ce891f211db2f90b1" "sleep" "infinity", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `crate::with_write_barrier`
[INFO] [stdout]   --> src/bytecode.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use crate::with_write_barrier;
[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 doc comment
[INFO] [stdout]   --> src/gc/mmtk_binding.rs:41:1
[INFO] [stdout]    |
[INFO] [stdout] 41 | /// Thread-local mutator storage for proper thread binding
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/gc/mmtk_binding.rs:954:1
[INFO] [stdout]     |
[INFO] [stdout] 954 | /// Thread-local task control flags - much simpler with isolated heaps
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mmtk_dealloc_placeholder`
[INFO] [stdout]  --> src/heap/lisp_task.rs:5:62
[INFO] [stdout]   |
[INFO] [stdout] 5 |     is_mmtk_initialized, mmtk_alloc, mmtk_alloc_placeholder, mmtk_dealloc_placeholder,
[INFO] [stdout]   |                                                              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Arc`
[INFO] [stdout]   --> src/scheduler/scheduler.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::sync::{Arc, RwLock, atomic::AtomicU64};
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `crate::with_write_barrier`
[INFO] [stdout]   --> src/bytecode.rs:26:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | use crate::with_write_barrier;
[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 doc comment
[INFO] [stdout]   --> src/gc/mmtk_binding.rs:41:1
[INFO] [stdout]    |
[INFO] [stdout] 41 | /// Thread-local mutator storage for proper thread binding
[INFO] [stdout]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]    |
[INFO] [stdout]    = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout]    = note: `#[warn(unused_doc_comments)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused doc comment
[INFO] [stdout]    --> src/gc/mmtk_binding.rs:954:1
[INFO] [stdout]     |
[INFO] [stdout] 954 | /// Thread-local task control flags - much simpler with isolated heaps
[INFO] [stdout]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ rustdoc does not generate documentation for macro invocations
[INFO] [stdout]     |
[INFO] [stdout]     = help: to document an item produced by a macro, the macro must produce the documentation as part of its expansion
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `mmtk_dealloc_placeholder`
[INFO] [stdout]  --> src/heap/lisp_task.rs:5:62
[INFO] [stdout]   |
[INFO] [stdout] 5 |     is_mmtk_initialized, mmtk_alloc, mmtk_alloc_placeholder, mmtk_dealloc_placeholder,
[INFO] [stdout]   |                                                              ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Arc`
[INFO] [stdout]   --> src/scheduler/scheduler.rs:13:17
[INFO] [stdout]    |
[INFO] [stdout] 13 | use std::sync::{Arc, RwLock, atomic::AtomicU64};
[INFO] [stdout]    |                 ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `jit_ptr`
[INFO] [stdout]   --> src/bytecode.rs:96:34
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub extern "C" fn jit_set_global(jit_ptr: *mut BytecodeJIT, symbol_id: u64, value: u64) {
[INFO] [stdout]    |                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_jit_ptr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `jit_ptr`
[INFO] [stdout]    --> src/bytecode.rs:115:34
[INFO] [stdout]     |
[INFO] [stdout] 115 | pub extern "C" fn jit_get_global(jit_ptr: *mut BytecodeJIT, symbol_id: u64) -> u64 {
[INFO] [stdout]     |                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_jit_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/scheduler/scheduler.rs:204:17
[INFO] [stdout]     |
[INFO] [stdout] 204 |             let mut jit = BytecodeJIT::new();
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `jit`
[INFO] [stdout]    --> src/scheduler/scheduler.rs:204:17
[INFO] [stdout]     |
[INFO] [stdout] 204 |             let mut jit = BytecodeJIT::new();
[INFO] [stdout]     |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_jit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `label_blocks`, `safepoint_ref`, and `recursive_calls` are never read
[INFO] [stdout]     --> src/bytecode.rs:1864:5
[INFO] [stdout]      |
[INFO] [stdout] 1860 | struct BytecodeAnalyzer<'a> {
[INFO] [stdout]      |        ---------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 1864 |     label_blocks: std::collections::HashMap<Label, Block>,
[INFO] [stdout]      |     ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1870 |     safepoint_ref: Option<FuncRef>,
[INFO] [stdout]      |     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1885 |     recursive_calls: Option<&'a std::collections::HashMap<Symbol, Vec<RecursiveCallSite>>>,
[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 `emit_safepoint_check` is never used
[INFO] [stdout]     --> src/bytecode.rs:1897:8
[INFO] [stdout]      |
[INFO] [stdout] 1890 | impl<'a> BytecodeAnalyzer<'a> {
[INFO] [stdout]      | ----------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 1897 |     fn emit_safepoint_check(&self, builder: &mut FunctionBuilder) {
[INFO] [stdout]      |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unregister_thread_root` is never used
[INFO] [stdout]    --> src/gc/mmtk_binding.rs:608:8
[INFO] [stdout]     |
[INFO] [stdout] 608 | pub fn unregister_thread_root(ptr: *mut dyn GcTrace) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `slots_ptr` is never used
[INFO] [stdout]   --> src/heap/environment.rs:84:15
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl Environment {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 84 |     unsafe fn slots_ptr(ptr: *mut Environment) -> *mut u64 {
[INFO] [stdout]    |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `trailing_slice_mut` is never used
[INFO] [stdout]   --> src/heap/flexible_utils.rs:53:15
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub unsafe fn trailing_slice_mut<'a, T, U>(base_ptr: *mut T, element_count: usize) -> &'a mut [U] {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `isa` is never read
[INFO] [stdout]    --> src/jit.rs:132:5
[INFO] [stdout]     |
[INFO] [stdout] 128 | pub struct VarJIT {
[INFO] [stdout]     |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 132 |     isa: cranelift::codegen::isa::OwnedTargetIsa,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `next_id` is never read
[INFO] [stdout]   --> src/symbol.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 87 | struct GlobalInternerState {
[INFO] [stdout]    |        ------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 93 |     next_id: CachePadded<AtomicU32>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `jit_ptr`
[INFO] [stdout]   --> src/bytecode.rs:96:34
[INFO] [stdout]    |
[INFO] [stdout] 96 | pub extern "C" fn jit_set_global(jit_ptr: *mut BytecodeJIT, symbol_id: u64, value: u64) {
[INFO] [stdout]    |                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_jit_ptr`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `jit_ptr`
[INFO] [stdout]    --> src/bytecode.rs:115:34
[INFO] [stdout]     |
[INFO] [stdout] 115 | pub extern "C" fn jit_get_global(jit_ptr: *mut BytecodeJIT, symbol_id: u64) -> u64 {
[INFO] [stdout]     |                                  ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_jit_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `inner_list`
[INFO] [stdout]    --> src/gc/mod.rs:337:13
[INFO] [stdout]     |
[INFO] [stdout] 337 |         let inner_list = Var::tuple(&[Var::int(1), Var::int(2)]);
[INFO] [stdout]     |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_inner_list`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `string`
[INFO] [stdout]    --> src/gc/mod.rs:338:13
[INFO] [stdout]     |
[INFO] [stdout] 338 |         let string = Var::string("test");
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_string`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child_ptr`
[INFO] [stdout]    --> src/gc/mod.rs:432:17
[INFO] [stdout]     |
[INFO] [stdout] 432 |             let child_ptr = Environment::from_values(&child_values, Some(parent_var));
[INFO] [stdout]     |                 ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_child_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `global_env_ptr` is never read
[INFO] [stdout]   --> src/bin/repl.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Repl {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 30 |     global_env_ptr: *mut Environment,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/heap/environment.rs:564:9
[INFO] [stdout]     |
[INFO] [stdout] 564 |         unsafe {
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_unsafe)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env_ptr`
[INFO] [stdout]    --> src/heap/environment.rs:583:25
[INFO] [stdout]     |
[INFO] [stdout] 583 |             if let Some(env_ptr) = env_var.as_environment() {
[INFO] [stdout]     |                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_env_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/heap/environment.rs:592:9
[INFO] [stdout]     |
[INFO] [stdout] 592 |         unsafe {
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child_ptr`
[INFO] [stdout]    --> src/heap/environment.rs:628:25
[INFO] [stdout]     |
[INFO] [stdout] 628 |             if let Some(child_ptr) = child_var.as_environment() {
[INFO] [stdout]     |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_child_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `parent_ptr`
[INFO] [stdout]    --> src/heap/environment.rs:631:25
[INFO] [stdout]     |
[INFO] [stdout] 631 |             if let Some(parent_ptr) = parent_var.as_environment() {
[INFO] [stdout]     |                         ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_parent_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary `unsafe` block
[INFO] [stdout]    --> src/heap/environment.rs:640:9
[INFO] [stdout]     |
[INFO] [stdout] 640 |         unsafe {
[INFO] [stdout]     |         ^^^^^^ unnecessary `unsafe` block
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `env_ptr`
[INFO] [stdout]    --> src/heap/environment.rs:661:25
[INFO] [stdout]     |
[INFO] [stdout] 661 |             if let Some(env_ptr) = env_var.as_environment() {
[INFO] [stdout]     |                         ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_env_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `child_ptr`
[INFO] [stdout]    --> src/heap/environment.rs:664:25
[INFO] [stdout]     |
[INFO] [stdout] 664 |             if let Some(child_ptr) = child_var.as_environment() {
[INFO] [stdout]     |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_child_ptr`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `global_env_ptr` is never read
[INFO] [stdout]   --> src/bin/repl.rs:30:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Repl {
[INFO] [stdout]    |            ---- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 30 |     global_env_ptr: *mut Environment,
[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 variable: `none_var`
[INFO] [stdout]     --> src/jit.rs:1611:13
[INFO] [stdout]      |
[INFO] [stdout] 1611 |         let none_var = Var::none();
[INFO] [stdout]      |             ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_none_var`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `symbol_var`
[INFO] [stdout]     --> src/jit.rs:1612:13
[INFO] [stdout]      |
[INFO] [stdout] 1612 |         let symbol_var = Var::symbol(12345);
[INFO] [stdout]      |             ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_symbol_var`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bin/fib_bench.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     for i in 0..iterations {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `editor` and `global_env_ptr` are never read
[INFO] [stdout]   --> src/bin/repl.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Repl {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 29 |     editor: DefaultEditor,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 30 |     global_env_ptr: *mut Environment,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `format_result`, `run`, and `print_help` are never used
[INFO] [stdout]    --> src/bin/repl.rs:94:12
[INFO] [stdout]     |
[INFO] [stdout]  33 | impl Repl {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout]  94 |     pub fn format_result(&self, var: &Var) -> String {
[INFO] [stdout]     |            ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 156 |     pub fn run(&mut self) -> std::result::Result<(), ReadlineError> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 229 |     fn print_help(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `start_repl` is never used
[INFO] [stdout]    --> src/bin/repl.rs:281:8
[INFO] [stdout]     |
[INFO] [stdout] 281 | pub fn start_repl() -> std::result::Result<(), ReadlineError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `i`
[INFO] [stdout]   --> src/bin/fib_bench.rs:49:9
[INFO] [stdout]    |
[INFO] [stdout] 49 |     for i in 0..iterations {
[INFO] [stdout]    |         ^ help: if this is intentional, prefix it with an underscore: `_i`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `editor` and `global_env_ptr` are never read
[INFO] [stdout]   --> src/bin/repl.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 26 | pub struct Repl {
[INFO] [stdout]    |            ---- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 29 |     editor: DefaultEditor,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 30 |     global_env_ptr: *mut Environment,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `run` and `print_help` are never used
[INFO] [stdout]    --> src/bin/repl.rs:156:12
[INFO] [stdout]     |
[INFO] [stdout]  33 | impl Repl {
[INFO] [stdout]     | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 156 |     pub fn run(&mut self) -> std::result::Result<(), ReadlineError> {
[INFO] [stdout]     |            ^^^
[INFO] [stdout] ...
[INFO] [stdout] 229 |     fn print_help(&self) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `start_repl` is never used
[INFO] [stdout]    --> src/bin/repl.rs:281:8
[INFO] [stdout]     |
[INFO] [stdout] 281 | pub fn start_repl() -> std::result::Result<(), ReadlineError> {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/scheduler/scheduler.rs:204:17
[INFO] [stdout]     |
[INFO] [stdout] 204 |             let mut jit = BytecodeJIT::new();
[INFO] [stdout]     |                 ----^^^
[INFO] [stdout]     |                 |
[INFO] [stdout]     |                 help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `jit`
[INFO] [stdout]    --> src/scheduler/scheduler.rs:204:17
[INFO] [stdout]     |
[INFO] [stdout] 204 |             let mut jit = BytecodeJIT::new();
[INFO] [stdout]     |                 ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_jit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/scheduler/scheduler.rs:493:13
[INFO] [stdout]     |
[INFO] [stdout] 493 |         let mut jit = BytecodeJIT::new();
[INFO] [stdout]     |             ----^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `jit`
[INFO] [stdout]    --> src/scheduler/scheduler.rs:493:13
[INFO] [stdout]     |
[INFO] [stdout] 493 |         let mut jit = BytecodeJIT::new();
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_jit`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `label_blocks`, `safepoint_ref`, and `recursive_calls` are never read
[INFO] [stdout]     --> src/bytecode.rs:1864:5
[INFO] [stdout]      |
[INFO] [stdout] 1860 | struct BytecodeAnalyzer<'a> {
[INFO] [stdout]      |        ---------------- fields in this struct
[INFO] [stdout] ...
[INFO] [stdout] 1864 |     label_blocks: std::collections::HashMap<Label, Block>,
[INFO] [stdout]      |     ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1870 |     safepoint_ref: Option<FuncRef>,
[INFO] [stdout]      |     ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 1885 |     recursive_calls: Option<&'a std::collections::HashMap<Symbol, Vec<RecursiveCallSite>>>,
[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 `emit_safepoint_check` is never used
[INFO] [stdout]     --> src/bytecode.rs:1897:8
[INFO] [stdout]      |
[INFO] [stdout] 1890 | impl<'a> BytecodeAnalyzer<'a> {
[INFO] [stdout]      | ----------------------------- method in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 1897 |     fn emit_safepoint_check(&self, builder: &mut FunctionBuilder) {
[INFO] [stdout]      |        ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unregister_thread_root` is never used
[INFO] [stdout]    --> src/gc/mmtk_binding.rs:608:8
[INFO] [stdout]     |
[INFO] [stdout] 608 | pub fn unregister_thread_root(ptr: *mut dyn GcTrace) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `slots_ptr` is never used
[INFO] [stdout]   --> src/heap/environment.rs:84:15
[INFO] [stdout]    |
[INFO] [stdout] 43 | impl Environment {
[INFO] [stdout]    | ---------------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 84 |     unsafe fn slots_ptr(ptr: *mut Environment) -> *mut u64 {
[INFO] [stdout]    |               ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `trailing_slice_mut` is never used
[INFO] [stdout]   --> src/heap/flexible_utils.rs:53:15
[INFO] [stdout]    |
[INFO] [stdout] 53 | pub unsafe fn trailing_slice_mut<'a, T, U>(base_ptr: *mut T, element_count: usize) -> &'a mut [U] {
[INFO] [stdout]    |               ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `isa` is never read
[INFO] [stdout]    --> src/jit.rs:132:5
[INFO] [stdout]     |
[INFO] [stdout] 128 | pub struct VarJIT {
[INFO] [stdout]     |            ------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 132 |     isa: cranelift::codegen::isa::OwnedTargetIsa,
[INFO] [stdout]     |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `next_id` is never read
[INFO] [stdout]   --> src/symbol.rs:93:5
[INFO] [stdout]    |
[INFO] [stdout] 87 | struct GlobalInternerState {
[INFO] [stdout]    |        ------------------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 93 |     next_id: CachePadded<AtomicU32>,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 18s
[INFO] [stderr] warning: the following packages contain code that will be rejected by a future version of Rust: nix v0.28.0
[INFO] [stderr] note: to see what the problems were, use the option `--future-incompat-report`, or run `cargo report future-incompatibilities --id 5`
[INFO] running `Command { std: "docker" "inspect" "ed75206ed20029a3be1ca597b75fd79a466193db8c5cccebd92d615075746d3d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed75206ed20029a3be1ca597b75fd79a466193db8c5cccebd92d615075746d3d", kill_on_drop: false }`
[INFO] [stdout] ed75206ed20029a3be1ca597b75fd79a466193db8c5cccebd92d615075746d3d
