[INFO] cloning repository https://github.com/glyh/rush
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/glyh/rush" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fglyh%2Frush", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fglyh%2Frush'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 021251ff622c66fb337e906710f3a6f81e33fce4
[INFO] checking glyh/rush against try#b4c55082edd8dec08ce8af276d7054d9c4db20c4 for pr-147984
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fglyh%2Frush" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/glyh/rush
[INFO] finished tweaking git repo https://github.com/glyh/rush
[INFO] tweaked toml for git repo https://github.com/glyh/rush written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/glyh/rush on toolchain b4c55082edd8dec08ce8af276d7054d9c4db20c4
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/glyh/rush 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" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "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-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7f56965e83f60dd8b4bc0178d23a95a6195510912a228051a5b00c0761f33e44
[INFO] running `Command { std: "docker" "start" "-a" "7f56965e83f60dd8b4bc0178d23a95a6195510912a228051a5b00c0761f33e44", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7f56965e83f60dd8b4bc0178d23a95a6195510912a228051a5b00c0761f33e44", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+b4c55082edd8dec08ce8af276d7054d9c4db20c4" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 9dfc7126269417726352fdf13ede909bced4f63c2e952f8fc3d7a5d95e036a8a
[INFO] running `Command { std: "docker" "start" "-a" "9dfc7126269417726352fdf13ede909bced4f63c2e952f8fc3d7a5d95e036a8a", kill_on_drop: false }`
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[INFO] [stdout] warning: unused import: `std::fmt::write`
[INFO] [stdout]  --> src/backend/jit.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::write;
[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: `std::str::FromStr`
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/rush-4f9586814022dab0/out/frontend/rush.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::fmt::write`
[INFO] [stdout]  --> src/backend/jit.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::fmt::write;
[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: `std::str::FromStr`
[INFO] [stdout]  --> /opt/rustwide/target/debug/build/rush-4f9586814022dab0/out/frontend/rush.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use std::str::FromStr;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `decl`
[INFO] [stdout]    --> src/backend/jit.rs:144:38
[INFO] [stdout]     |
[INFO] [stdout] 144 |     pub fn compile_global(&mut self, decl: &VarDecl) {
[INFO] [stdout]     |                                      ^^^^ help: if this is intentional, prefix it with an underscore: `_decl`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `decl`
[INFO] [stdout]    --> src/backend/jit.rs:144:38
[INFO] [stdout]     |
[INFO] [stdout] 144 |     pub fn compile_global(&mut self, decl: &VarDecl) {
[INFO] [stdout]     |                                      ^^^^ help: if this is intentional, prefix it with an underscore: `_decl`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `run_code` is never used
[INFO] [stdout]  --> src/backend/mod.rs:6:11
[INFO] [stdout]   |
[INFO] [stdout] 6 | unsafe fn run_code<I, O>(
[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 `JIT` is never constructed
[INFO] [stdout]   --> src/backend/jit.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct JIT {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `declare_variable` is never used
[INFO] [stdout]   --> src/backend/jit.rs:20:4
[INFO] [stdout]    |
[INFO] [stdout] 20 | fn declare_variable(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `translate_type` is never used
[INFO] [stdout]   --> src/backend/jit.rs:62:4
[INFO] [stdout]    |
[INFO] [stdout] 62 | fn translate_type(module: &JITModule, ty: Rc<RefCell<crate::types::Type>>) -> Type {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `collect_variable_declarations` is never used
[INFO] [stdout]   --> src/backend/jit.rs:79:4
[INFO] [stdout]    |
[INFO] [stdout] 79 | fn collect_variable_declarations(
[INFO] [stdout]    |    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `declare_variables_in_stmt` is never used
[INFO] [stdout]    --> src/backend/jit.rs:109:4
[INFO] [stdout]     |
[INFO] [stdout] 109 | fn declare_variables_in_stmt(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `compile_global`, `compile_function`, and `translate_function` are never used
[INFO] [stdout]    --> src/backend/jit.rs:144:12
[INFO] [stdout]     |
[INFO] [stdout] 143 | impl JIT {
[INFO] [stdout]     | -------- methods in this implementation
[INFO] [stdout] 144 |     pub fn compile_global(&mut self, decl: &VarDecl) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 147 |     pub fn compile_function(&mut self, fun: &FunctionDef) -> Result<*const u8, String> {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 165 |     fn translate_function(&mut self, fun: &FunctionDef) -> Result<(), String> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `FunctionTranslator` is never constructed
[INFO] [stdout]    --> src/backend/jit.rs:210:8
[INFO] [stdout]     |
[INFO] [stdout] 210 | struct FunctionTranslator<'a> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `StmtState` is never constructed
[INFO] [stdout]    --> src/backend/jit.rs:217:8
[INFO] [stdout]     |
[INFO] [stdout] 217 | struct StmtState {
[INFO] [stdout]     |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: multiple methods are never used
[INFO] [stdout]    --> src/backend/jit.rs:222:8
[INFO] [stdout]     |
[INFO] [stdout] 221 | impl<'a> FunctionTranslator<'a> {
[INFO] [stdout]     | ------------------------------- methods in this implementation
[INFO] [stdout] 222 |     fn translate_atom(&mut self, atom: &Atom) -> Value {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 236 |     fn translate_expr(&mut self, expr: &Expr) -> Value {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 279 |     fn translate_call(&mut self, name: &String, args: &Vec<Box<Expr>>) -> Value {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 297 |     fn translate_stmts(&mut self, stmts: &Vec<Stmt>) -> StmtState {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 310 |     fn translate_stmt(&mut self, stmt: &Stmt) -> StmtState {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 341 |     fn translate_if(
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 395 |     fn translate_while(&mut self, cond: &Expr, body: &Vec<Stmt>) -> StmtState {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: method `get_type` is never used
[INFO] [stdout]   --> src/frontend/ast.rs:40:12
[INFO] [stdout]    |
[INFO] [stdout] 39 | impl FunctionDef {
[INFO] [stdout]    | ---------------- method in this implementation
[INFO] [stdout] 40 |     pub fn get_type(&self) -> Rc<RefCell<Type>> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Spanned` is never used
[INFO] [stdout]  --> src/frontend/lexer.rs:5:10
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub type Spanned<Tok, Loc, Error> = Result<(Loc, Tok, Loc), Error>;
[INFO] [stdout]   |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `Lexer` is never constructed
[INFO] [stdout]  --> src/frontend/lexer.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Lexer<'input> {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/frontend/lexer.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 11 | impl<'input> Lexer<'input> {
[INFO] [stdout]    | -------------------------- associated function in this implementation
[INFO] [stdout] 12 |     pub fn new(input: &'input str) -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `TyEnv` is never used
[INFO] [stdout]   --> src/typecheck/inferencer.rs:12:6
[INFO] [stdout]    |
[INFO] [stdout] 12 | type TyEnv = HashMap<String, Rc<RefCell<Type>>>;
[INFO] [stdout]    |      ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `free_variables` is never used
[INFO] [stdout]   --> src/typecheck/inferencer.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn free_variables(ty: Rc<RefCell<Type>>) -> VarSet {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Constraint` is never used
[INFO] [stdout]   --> src/typecheck/inferencer.rs:37:6
[INFO] [stdout]    |
[INFO] [stdout] 37 | type Constraint = (Rc<RefCell<Type>>, Rc<RefCell<Type>>);
[INFO] [stdout]    |      ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `maybe_link` is never used
[INFO] [stdout]   --> src/typecheck/inferencer.rs:39:4
[INFO] [stdout]    |
[INFO] [stdout] 39 | fn maybe_link(var: Rc<RefCell<TVar>>, target: Rc<RefCell<Type>>) {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `unify_one` is never used
[INFO] [stdout]   --> src/typecheck/inferencer.rs:53:4
[INFO] [stdout]    |
[INFO] [stdout] 53 | fn unify_one(c: Constraint, out: &mut VecDeque<Constraint>) {
[INFO] [stdout]    |    ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infer_atom` is never used
[INFO] [stdout]   --> src/typecheck/inferencer.rs:87:4
[INFO] [stdout]    |
[INFO] [stdout] 87 | fn infer_atom(atom: &ast::Atom) -> Rc<RefCell<Type>> {
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infer_expr` is never used
[INFO] [stdout]   --> src/typecheck/inferencer.rs:96:4
[INFO] [stdout]    |
[INFO] [stdout] 96 | fn infer_expr(
[INFO] [stdout]    |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infer_var_decl` is never used
[INFO] [stdout]    --> src/typecheck/inferencer.rs:143:4
[INFO] [stdout]     |
[INFO] [stdout] 143 | fn infer_var_decl(env: &mut TyEnv, v_decl: &ast::VarDecl, constraints: &mut VecDeque<Constraint>) {
[INFO] [stdout]     |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infer_block` is never used
[INFO] [stdout]    --> src/typecheck/inferencer.rs:150:4
[INFO] [stdout]     |
[INFO] [stdout] 150 | fn infer_block(
[INFO] [stdout]     |    ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infer_stmt` is never used
[INFO] [stdout]    --> src/typecheck/inferencer.rs:161:4
[INFO] [stdout]     |
[INFO] [stdout] 161 | fn infer_stmt(
[INFO] [stdout]     |    ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infer_function_top` is never used
[INFO] [stdout]    --> src/typecheck/inferencer.rs:193:4
[INFO] [stdout]     |
[INFO] [stdout] 193 | fn infer_function_top(
[INFO] [stdout]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infer_type_func` is never used
[INFO] [stdout]    --> src/typecheck/inferencer.rs:212:8
[INFO] [stdout]     |
[INFO] [stdout] 212 | pub fn infer_type_func(func_def: &ast::FunctionDef) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infer_type` is never used
[INFO] [stdout]    --> src/typecheck/inferencer.rs:224:8
[INFO] [stdout]     |
[INFO] [stdout] 224 | pub fn infer_type(prog: &ast::Program) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `Resolved` is never constructed
[INFO] [stdout]   --> src/types.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub enum TVar {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] 13 |     Resolved(Rc<RefCell<Type>>),
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `TVar` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ForAll` is never constructed
[INFO] [stdout]   --> src/types.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub enum Type {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] 19 |     ForAll(VarSet, Rc<RefCell<Type>>),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Type` 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: function `unwrap_resolved` is never used
[INFO] [stdout]   --> src/types.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 | pub fn unwrap_resolved(ty: Rc<RefCell<Type>>) -> Rc<RefCell<Type>> {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `con` is never used
[INFO] [stdout]   --> src/types.rs:49:12
[INFO] [stdout]    |
[INFO] [stdout] 42 | impl Type {
[INFO] [stdout]    | --------- associated function in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 49 |     pub fn con(name: String) -> Rc<RefCell<Self>> {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `data_description` is never read
[INFO] [stdout]   --> src/backend/jit.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 12 | pub struct JIT {
[INFO] [stdout]    |            --- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 15 |     data_description: DataDescription,
[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 `compile_global` is never used
[INFO] [stdout]    --> src/backend/jit.rs:144:12
[INFO] [stdout]     |
[INFO] [stdout] 143 | impl JIT {
[INFO] [stdout]     | -------- method in this implementation
[INFO] [stdout] 144 |     pub fn compile_global(&mut self, decl: &VarDecl) {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `free_variables` is never used
[INFO] [stdout]   --> src/typecheck/inferencer.rs:14:4
[INFO] [stdout]    |
[INFO] [stdout] 14 | fn free_variables(ty: Rc<RefCell<Type>>) -> VarSet {
[INFO] [stdout]    |    ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `infer_type` is never used
[INFO] [stdout]    --> src/typecheck/inferencer.rs:224:8
[INFO] [stdout]     |
[INFO] [stdout] 224 | pub fn infer_type(prog: &ast::Program) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant `ForAll` is never constructed
[INFO] [stdout]   --> src/types.rs:19:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub enum Type {
[INFO] [stdout]    |          ---- variant in this enum
[INFO] [stdout] 19 |     ForAll(VarSet, Rc<RefCell<Type>>),
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `Type` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.66s
[INFO] running `Command { std: "docker" "inspect" "9dfc7126269417726352fdf13ede909bced4f63c2e952f8fc3d7a5d95e036a8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9dfc7126269417726352fdf13ede909bced4f63c2e952f8fc3d7a5d95e036a8a", kill_on_drop: false }`
[INFO] [stdout] 9dfc7126269417726352fdf13ede909bced4f63c2e952f8fc3d7a5d95e036a8a