[INFO] cloning repository https://github.com/romdotdog/w
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/romdotdog/w" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fromdotdog%2Fw", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fromdotdog%2Fw'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5dd124fe8483255cc6ccb5ecff8af29d290b1cba
[INFO] building romdotdog/w against master#11663cd3bfefef7d34e8f0892c250bf698049392+rustflags=-Dtail-expr-drop-order for pr-134523
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fromdotdog%2Fw" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/romdotdog/w on toolchain 11663cd3bfefef7d34e8f0892c250bf698049392
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/romdotdog/w
[INFO] finished tweaking git repo https://github.com/romdotdog/w
[INFO] tweaked toml for git repo https://github.com/romdotdog/w written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/romdotdog/w 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" "+11663cd3bfefef7d34e8f0892c250bf698049392" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded appendlist v1.4.0
[INFO] [stderr]   Downloaded similar v2.1.0
[INFO] [stderr]   Downloaded getopts v0.2.21
[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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 77cdd782d0b37a5da013a79a53da05e5ef4e8bb2eb5fe6dc2ae1ec48fb5315db
[INFO] running `Command { std: "docker" "start" "-a" "77cdd782d0b37a5da013a79a53da05e5ef4e8bb2eb5fe6dc2ae1ec48fb5315db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "77cdd782d0b37a5da013a79a53da05e5ef4e8bb2eb5fe6dc2ae1ec48fb5315db", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "77cdd782d0b37a5da013a79a53da05e5ef4e8bb2eb5fe6dc2ae1ec48fb5315db", kill_on_drop: false }`
[INFO] [stdout] 77cdd782d0b37a5da013a79a53da05e5ef4e8bb2eb5fe6dc2ae1ec48fb5315db
[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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4af06ce1819dba526096bdc14e332850de43d3ce718ba47d139268067f760c9f
[INFO] running `Command { std: "docker" "start" "-a" "4af06ce1819dba526096bdc14e332850de43d3ce718ba47d139268067f760c9f", kill_on_drop: false }`
[INFO] [stderr]    Compiling dec2flt v0.0.0 (/opt/rustwide/workdir/compiler/dec2flt)
[INFO] [stderr]    Compiling w_utils v0.0.0 (/opt/rustwide/workdir/compiler/w_utils)
[INFO] [stderr]    Compiling w_codegen v0.0.0 (/opt/rustwide/workdir/compiler/w_codegen)
[INFO] [stderr]    Compiling w_errors v0.0.0 (/opt/rustwide/workdir/compiler/w_errors)
[INFO] [stderr]    Compiling appendlist v1.4.0
[INFO] [stderr]    Compiling getopts v0.2.21
[INFO] [stdout] warning: methods `eq_ignore_case` and `skip_chars2` are never used
[INFO] [stdout]   --> compiler/dec2flt/src/common.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub(crate) trait ByteSlice: AsRef<[u8]> {
[INFO] [stdout]    |                  --------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn eq_ignore_case(&self, u: &[u8]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |     fn skip_chars2(&self, c1: u8, c2: u8) -> &[u8] {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling w_lexer v0.0.0 (/opt/rustwide/workdir/compiler/w_lexer)
[INFO] [stderr]    Compiling w_compiler v0.0.0 (/opt/rustwide/workdir/compiler/w_compiler)
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> compiler/w_compiler/src/simpleatom.rs:33:19
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let end = 'm: loop {
[INFO] [stdout]    |                   ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `panic_block`
[INFO] [stdout]   --> compiler/w_compiler/src/simpleatom.rs:34:26
[INFO] [stdout]    |
[INFO] [stdout] 34 |             macro_rules! panic_block {
[INFO] [stdout]    |                          ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `panic`
[INFO] [stdout]  --> compiler/w_compiler/src/types/typ.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fmt::Display, panic};
[INFO] [stdout]   |                         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HeapType`
[INFO] [stdout]  --> compiler/w_compiler/src/types/typ.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 |     itemref::{HeapType, ItemRef, StackType},
[INFO] [stdout]   |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src_ref`
[INFO] [stdout]   --> compiler/w_compiler/src/handler.rs:54:22
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn finish(&self, src_ref: &'ast Self::SourceRef) {
[INFO] [stdout]    |                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_src_ref`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ret`
[INFO] [stdout]   --> compiler/w_compiler/src/primaryatom.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let ret = match self.tk {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_ret`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `label`
[INFO] [stdout]   --> compiler/w_compiler/src/primaryatom.rs:92:13
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let label = match self.tk {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cond`
[INFO] [stdout]    --> compiler/w_compiler/src/primaryatom.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |         let cond = match self.tk {
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_cond`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> compiler/w_compiler/src/primaryatom.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |         let start = self.start;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> compiler/w_compiler/src/primaryatom.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 159 |         let a = self.primaryatom(None); // TODO: contextual type
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]    --> compiler/w_compiler/src/primaryatom.rs:155:24
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn unop(&mut self, u: UnOp, contextual_type: Option<Type>) -> Value<S> {
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contextual_type`
[INFO] [stdout]    --> compiler/w_compiler/src/primaryatom.rs:155:33
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn unop(&mut self, u: UnOp, contextual_type: Option<Type>) -> Value<S> {
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contextual_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]   --> compiler/w_compiler/src/simpleatom.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let end = 'm: loop {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |         let start = self.start;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `binding`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 141 |         let binding = match self.tk {
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_binding`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `atom`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:258:25
[INFO] [stdout]     |
[INFO] [stdout] 258 |                     let atom = self.atom(Some(U32));
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_atom`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:298:37
[INFO] [stdout]     |
[INFO] [stdout] 298 |                     if let Item::Fn(name, params, ret) = item {
[INFO] [stdout]     |                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ret`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:298:51
[INFO] [stdout]     |
[INFO] [stdout] 298 |                     if let Item::Fn(name, params, ret) = item {
[INFO] [stdout]     |                                                   ^^^ help: if this is intentional, prefix it with an underscore: `_ret`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:233:31
[INFO] [stdout]     |
[INFO] [stdout] 233 |     fn postfixatom(&mut self, mut lhs: Value<S>) -> Value<S> {
[INFO] [stdout]     |                               ----^^^
[INFO] [stdout]     |                               |
[INFO] [stdout]     |                               help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:371:21
[INFO] [stdout]     |
[INFO] [stdout] 371 |                 let t = self.parse_type().unwrap(); // TODO
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:401:40
[INFO] [stdout]     |
[INFO] [stdout] 401 |                     Some(Token::String(s)) => todo!(),
[INFO] [stdout]     |                                        ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:402:38
[INFO] [stdout]     |
[INFO] [stdout] 402 |                     Some(Token::Char(s)) => todo!(),
[INFO] [stdout]     |                                      ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]   --> compiler/w_compiler/src/toplevel.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let start = self.start;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `decl`
[INFO] [stdout]   --> compiler/w_compiler/src/toplevel.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let decl = self.parse_decl().unwrap();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_decl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]   --> compiler/w_compiler/src/toplevel.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let start = self.start;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]   --> compiler/w_compiler/src/toplevel.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let end = loop {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:172:13
[INFO] [stdout]     |
[INFO] [stdout] 172 |         let start = self.start;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:194:17
[INFO] [stdout]     |
[INFO] [stdout] 194 |             let end = loop {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:236:13
[INFO] [stdout]     |
[INFO] [stdout] 236 |         let start = self.start;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:240:13
[INFO] [stdout]     |
[INFO] [stdout] 240 |         let name = self.expect_ident(&Some(Token::LeftBracket));
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fields`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:241:13
[INFO] [stdout]     |
[INFO] [stdout] 241 |         let fields = self.type_body(false);
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fields`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_struct`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:235:39
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub fn struct_or_union(&mut self, is_struct: bool) {
[INFO] [stdout]     |                                       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_struct`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:259:13
[INFO] [stdout]     |
[INFO] [stdout] 259 |         let start = self.start;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `paren_end`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:265:13
[INFO] [stdout]     |
[INFO] [stdout] 265 |         let paren_end = match self.tk {
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_paren_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exported`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:256:32
[INFO] [stdout]     |
[INFO] [stdout] 256 |     pub fn function(&mut self, exported: bool, static_: bool) {
[INFO] [stdout]     |                                ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_exported`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `static_`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:256:48
[INFO] [stdout]     |
[INFO] [stdout] 256 |     pub fn function(&mut self, exported: bool, static_: bool) {
[INFO] [stdout]     |                                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_static_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `module`
[INFO] [stdout]   --> compiler/w_compiler/src/types/mod.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn coerce_inner(self, module: &mut S, to: Type) -> Result<Value<S>, Value<S>> {
[INFO] [stdout]    |                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_module`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_struct`
[INFO] [stdout]    --> compiler/w_compiler/src/lib.rs:355:25
[INFO] [stdout]     |
[INFO] [stdout] 355 |                     let is_struct = ch == &Token::Struct;
[INFO] [stdout]     |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_struct`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `body`
[INFO] [stdout]    --> compiler/w_compiler/src/lib.rs:357:25
[INFO] [stdout]     |
[INFO] [stdout] 357 |                     let body = self.type_body(true);
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_body`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_temp_local` and `free_temp_local` are never used
[INFO] [stdout]   --> compiler/w_compiler/src/util/locals.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Flow {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn get_temp_local(&mut self, t: Type) -> (String, usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     pub fn free_temp_local<S: Serializer>(&mut self, t: Type, index: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> compiler/w_compiler/src/util/registry.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Enum(HashMap<&'ast str, i64>),
[INFO] [stdout]   |     ---- ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[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] 6 |     Enum(()),
[INFO] [stdout]   |          ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Struct`, `Union`, and `Global` are never constructed
[INFO] [stdout]  --> compiler/w_compiler/src/util/registry.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum Item<'ast> {
[INFO] [stdout]   |          ---- variants in this enum
[INFO] [stdout] 6 |     Enum(HashMap<&'ast str, i64>),
[INFO] [stdout] 7 |     Struct(HashMap<&'ast str, (Type, i32)>),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 8 |     Union(HashMap<&'ast str, Type>),
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 9 |     Global(&'ast str, Type),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Registry::<'ast>::push` that must be used
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:179:13
[INFO] [stdout]     |
[INFO] [stdout] 179 |             self.registry.push(name, Item::Enum(fields));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 179 |             let _ = self.registry.push(name, Item::Enum(fields));
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `SymbolStack::<'ast>::push` that must be used
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:327:13
[INFO] [stdout]     |
[INFO] [stdout] 327 |             self.symbols.push(param.ident, Binding::Type(param.typ));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 327 |             let _ = self.symbols.push(param.ident, Binding::Type(param.typ));
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling w_session v0.0.0 (/opt/rustwide/workdir/compiler/w_session)
[INFO] [stderr]    Compiling w v0.0.0 (/opt/rustwide/workdir/compiler/w)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1.49s
[INFO] running `Command { std: "docker" "inspect" "4af06ce1819dba526096bdc14e332850de43d3ce718ba47d139268067f760c9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4af06ce1819dba526096bdc14e332850de43d3ce718ba47d139268067f760c9f", kill_on_drop: false }`
[INFO] [stdout] 4af06ce1819dba526096bdc14e332850de43d3ce718ba47d139268067f760c9f
[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 -Dtail-expr-drop-order" "-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:f3a9d4ad9d972b27faf3965f35b62e55ba32bbce8f20bc8fe909558a86702fde" "/opt/rustwide/cargo-home/bin/cargo" "+11663cd3bfefef7d34e8f0892c250bf698049392" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 90d199d0db7fe7037e6d6d5b7de846fb62688dfd4fdd6652037ae4c3e2484cbe
[INFO] running `Command { std: "docker" "start" "-a" "90d199d0db7fe7037e6d6d5b7de846fb62688dfd4fdd6652037ae4c3e2484cbe", kill_on_drop: false }`
[INFO] [stderr]    Compiling similar v2.1.0
[INFO] [stdout] warning: methods `eq_ignore_case` and `skip_chars2` are never used
[INFO] [stdout]   --> compiler/dec2flt/src/common.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub(crate) trait ByteSlice: AsRef<[u8]> {
[INFO] [stdout]    |                  --------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn eq_ignore_case(&self, u: &[u8]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |     fn skip_chars2(&self, c1: u8, c2: u8) -> &[u8] {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling w_lexer v0.0.0 (/opt/rustwide/workdir/compiler/w_lexer)
[INFO] [stderr]    Compiling w_codegen v0.0.0 (/opt/rustwide/workdir/compiler/w_codegen)
[INFO] [stderr]    Compiling dec2flt v0.0.0 (/opt/rustwide/workdir/compiler/dec2flt)
[INFO] [stderr]    Compiling w_utils v0.0.0 (/opt/rustwide/workdir/compiler/w_utils)
[INFO] [stderr]    Compiling w_errors v0.0.0 (/opt/rustwide/workdir/compiler/w_errors)
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> compiler/w_compiler/src/simpleatom.rs:33:19
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let end = 'm: loop {
[INFO] [stdout]    |                   ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `panic_block`
[INFO] [stdout]   --> compiler/w_compiler/src/simpleatom.rs:34:26
[INFO] [stdout]    |
[INFO] [stdout] 34 |             macro_rules! panic_block {
[INFO] [stdout]    |                          ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `panic`
[INFO] [stdout]  --> compiler/w_compiler/src/types/typ.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fmt::Display, panic};
[INFO] [stdout]   |                         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HeapType`
[INFO] [stdout]  --> compiler/w_compiler/src/types/typ.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 |     itemref::{HeapType, ItemRef, StackType},
[INFO] [stdout]   |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src_ref`
[INFO] [stdout]   --> compiler/w_compiler/src/handler.rs:54:22
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn finish(&self, src_ref: &'ast Self::SourceRef) {
[INFO] [stdout]    |                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_src_ref`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ret`
[INFO] [stdout]   --> compiler/w_compiler/src/primaryatom.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let ret = match self.tk {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_ret`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `label`
[INFO] [stdout]   --> compiler/w_compiler/src/primaryatom.rs:92:13
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let label = match self.tk {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cond`
[INFO] [stdout]    --> compiler/w_compiler/src/primaryatom.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |         let cond = match self.tk {
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_cond`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> compiler/w_compiler/src/primaryatom.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |         let start = self.start;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> compiler/w_compiler/src/primaryatom.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 159 |         let a = self.primaryatom(None); // TODO: contextual type
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]    --> compiler/w_compiler/src/primaryatom.rs:155:24
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn unop(&mut self, u: UnOp, contextual_type: Option<Type>) -> Value<S> {
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contextual_type`
[INFO] [stdout]    --> compiler/w_compiler/src/primaryatom.rs:155:33
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn unop(&mut self, u: UnOp, contextual_type: Option<Type>) -> Value<S> {
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contextual_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]   --> compiler/w_compiler/src/simpleatom.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let end = 'm: loop {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |         let start = self.start;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `binding`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 141 |         let binding = match self.tk {
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_binding`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `atom`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:258:25
[INFO] [stdout]     |
[INFO] [stdout] 258 |                     let atom = self.atom(Some(U32));
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_atom`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:298:37
[INFO] [stdout]     |
[INFO] [stdout] 298 |                     if let Item::Fn(name, params, ret) = item {
[INFO] [stdout]     |                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ret`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:298:51
[INFO] [stdout]     |
[INFO] [stdout] 298 |                     if let Item::Fn(name, params, ret) = item {
[INFO] [stdout]     |                                                   ^^^ help: if this is intentional, prefix it with an underscore: `_ret`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:233:31
[INFO] [stdout]     |
[INFO] [stdout] 233 |     fn postfixatom(&mut self, mut lhs: Value<S>) -> Value<S> {
[INFO] [stdout]     |                               ----^^^
[INFO] [stdout]     |                               |
[INFO] [stdout]     |                               help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling w_compiler v0.0.0 (/opt/rustwide/workdir/compiler/w_compiler)
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:371:21
[INFO] [stdout]     |
[INFO] [stdout] 371 |                 let t = self.parse_type().unwrap(); // TODO
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:401:40
[INFO] [stdout]     |
[INFO] [stdout] 401 |                     Some(Token::String(s)) => todo!(),
[INFO] [stdout]     |                                        ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:402:38
[INFO] [stdout]     |
[INFO] [stdout] 402 |                     Some(Token::Char(s)) => todo!(),
[INFO] [stdout]     |                                      ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]   --> compiler/w_compiler/src/toplevel.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let start = self.start;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `decl`
[INFO] [stdout]   --> compiler/w_compiler/src/toplevel.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let decl = self.parse_decl().unwrap();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_decl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]   --> compiler/w_compiler/src/toplevel.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let start = self.start;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]   --> compiler/w_compiler/src/toplevel.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let end = loop {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:172:13
[INFO] [stdout]     |
[INFO] [stdout] 172 |         let start = self.start;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:194:17
[INFO] [stdout]     |
[INFO] [stdout] 194 |             let end = loop {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:236:13
[INFO] [stdout]     |
[INFO] [stdout] 236 |         let start = self.start;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:240:13
[INFO] [stdout]     |
[INFO] [stdout] 240 |         let name = self.expect_ident(&Some(Token::LeftBracket));
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fields`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:241:13
[INFO] [stdout]     |
[INFO] [stdout] 241 |         let fields = self.type_body(false);
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fields`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_struct`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:235:39
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub fn struct_or_union(&mut self, is_struct: bool) {
[INFO] [stdout]     |                                       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_struct`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:259:13
[INFO] [stdout]     |
[INFO] [stdout] 259 |         let start = self.start;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `paren_end`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:265:13
[INFO] [stdout]     |
[INFO] [stdout] 265 |         let paren_end = match self.tk {
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_paren_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exported`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:256:32
[INFO] [stdout]     |
[INFO] [stdout] 256 |     pub fn function(&mut self, exported: bool, static_: bool) {
[INFO] [stdout]     |                                ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_exported`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `static_`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:256:48
[INFO] [stdout]     |
[INFO] [stdout] 256 |     pub fn function(&mut self, exported: bool, static_: bool) {
[INFO] [stdout]     |                                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_static_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `module`
[INFO] [stdout]   --> compiler/w_compiler/src/types/mod.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn coerce_inner(self, module: &mut S, to: Type) -> Result<Value<S>, Value<S>> {
[INFO] [stdout]    |                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_module`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_struct`
[INFO] [stdout]    --> compiler/w_compiler/src/lib.rs:355:25
[INFO] [stdout]     |
[INFO] [stdout] 355 |                     let is_struct = ch == &Token::Struct;
[INFO] [stdout]     |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_struct`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `body`
[INFO] [stdout]    --> compiler/w_compiler/src/lib.rs:357:25
[INFO] [stdout]     |
[INFO] [stdout] 357 |                     let body = self.type_body(true);
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_body`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_temp_local` and `free_temp_local` are never used
[INFO] [stdout]   --> compiler/w_compiler/src/util/locals.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Flow {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn get_temp_local(&mut self, t: Type) -> (String, usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     pub fn free_temp_local<S: Serializer>(&mut self, t: Type, index: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> compiler/w_compiler/src/util/registry.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Enum(HashMap<&'ast str, i64>),
[INFO] [stdout]   |     ---- ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[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] 6 |     Enum(()),
[INFO] [stdout]   |          ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Struct`, `Union`, and `Global` are never constructed
[INFO] [stdout]  --> compiler/w_compiler/src/util/registry.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum Item<'ast> {
[INFO] [stdout]   |          ---- variants in this enum
[INFO] [stdout] 6 |     Enum(HashMap<&'ast str, i64>),
[INFO] [stdout] 7 |     Struct(HashMap<&'ast str, (Type, i32)>),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 8 |     Union(HashMap<&'ast str, Type>),
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 9 |     Global(&'ast str, Type),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Registry::<'ast>::push` that must be used
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:179:13
[INFO] [stdout]     |
[INFO] [stdout] 179 |             self.registry.push(name, Item::Enum(fields));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 179 |             let _ = self.registry.push(name, Item::Enum(fields));
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `SymbolStack::<'ast>::push` that must be used
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:327:13
[INFO] [stdout]     |
[INFO] [stdout] 327 |             self.symbols.push(param.ident, Binding::Type(param.typ));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 327 |             let _ = self.symbols.push(param.ident, Binding::Type(param.typ));
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> compiler/w_compiler/src/simpleatom.rs:33:19
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let end = 'm: loop {
[INFO] [stdout]    |                   ^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused macro definition: `panic_block`
[INFO] [stdout]   --> compiler/w_compiler/src/simpleatom.rs:34:26
[INFO] [stdout]    |
[INFO] [stdout] 34 |             macro_rules! panic_block {
[INFO] [stdout]    |                          ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_macros)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `panic`
[INFO] [stdout]  --> compiler/w_compiler/src/types/typ.rs:1:25
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::{fmt::Display, panic};
[INFO] [stdout]   |                         ^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `HeapType`
[INFO] [stdout]  --> compiler/w_compiler/src/types/typ.rs:6:15
[INFO] [stdout]   |
[INFO] [stdout] 6 |     itemref::{HeapType, ItemRef, StackType},
[INFO] [stdout]   |               ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `eq_ignore_case` and `skip_chars2` are never used
[INFO] [stdout]   --> compiler/dec2flt/src/common.rs:47:8
[INFO] [stdout]    |
[INFO] [stdout] 6  | pub(crate) trait ByteSlice: AsRef<[u8]> {
[INFO] [stdout]    |                  --------- methods in this trait
[INFO] [stdout] ...
[INFO] [stdout] 47 |     fn eq_ignore_case(&self, u: &[u8]) -> bool {
[INFO] [stdout]    |        ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 69 |     fn skip_chars2(&self, c1: u8, c2: u8) -> &[u8] {
[INFO] [stdout]    |        ^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `src_ref`
[INFO] [stdout]   --> compiler/w_compiler/src/handler.rs:54:22
[INFO] [stdout]    |
[INFO] [stdout] 54 |     fn finish(&self, src_ref: &'ast Self::SourceRef) {
[INFO] [stdout]    |                      ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_src_ref`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ret`
[INFO] [stdout]   --> compiler/w_compiler/src/primaryatom.rs:87:13
[INFO] [stdout]    |
[INFO] [stdout] 87 |         let ret = match self.tk {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_ret`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `label`
[INFO] [stdout]   --> compiler/w_compiler/src/primaryatom.rs:92:13
[INFO] [stdout]    |
[INFO] [stdout] 92 |         let label = match self.tk {
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_label`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `cond`
[INFO] [stdout]    --> compiler/w_compiler/src/primaryatom.rs:114:13
[INFO] [stdout]     |
[INFO] [stdout] 114 |         let cond = match self.tk {
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_cond`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> compiler/w_compiler/src/primaryatom.rs:156:13
[INFO] [stdout]     |
[INFO] [stdout] 156 |         let start = self.start;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `a`
[INFO] [stdout]    --> compiler/w_compiler/src/primaryatom.rs:159:13
[INFO] [stdout]     |
[INFO] [stdout] 159 |         let a = self.primaryatom(None); // TODO: contextual type
[INFO] [stdout]     |             ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `u`
[INFO] [stdout]    --> compiler/w_compiler/src/primaryatom.rs:155:24
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn unop(&mut self, u: UnOp, contextual_type: Option<Type>) -> Value<S> {
[INFO] [stdout]     |                        ^ help: if this is intentional, prefix it with an underscore: `_u`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `contextual_type`
[INFO] [stdout]    --> compiler/w_compiler/src/primaryatom.rs:155:33
[INFO] [stdout]     |
[INFO] [stdout] 155 |     fn unop(&mut self, u: UnOp, contextual_type: Option<Type>) -> Value<S> {
[INFO] [stdout]     |                                 ^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_contextual_type`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]   --> compiler/w_compiler/src/simpleatom.rs:33:13
[INFO] [stdout]    |
[INFO] [stdout] 33 |         let end = 'm: loop {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:137:13
[INFO] [stdout]     |
[INFO] [stdout] 137 |         let start = self.start;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `binding`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:141:13
[INFO] [stdout]     |
[INFO] [stdout] 141 |         let binding = match self.tk {
[INFO] [stdout]     |             ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_binding`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `atom`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:258:25
[INFO] [stdout]     |
[INFO] [stdout] 258 |                     let atom = self.atom(Some(U32));
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_atom`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:298:37
[INFO] [stdout]     |
[INFO] [stdout] 298 |                     if let Item::Fn(name, params, ret) = item {
[INFO] [stdout]     |                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `ret`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:298:51
[INFO] [stdout]     |
[INFO] [stdout] 298 |                     if let Item::Fn(name, params, ret) = item {
[INFO] [stdout]     |                                                   ^^^ help: if this is intentional, prefix it with an underscore: `_ret`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:233:31
[INFO] [stdout]     |
[INFO] [stdout] 233 |     fn postfixatom(&mut self, mut lhs: Value<S>) -> Value<S> {
[INFO] [stdout]     |                               ----^^^
[INFO] [stdout]     |                               |
[INFO] [stdout]     |                               help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `t`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:371:21
[INFO] [stdout]     |
[INFO] [stdout] 371 |                 let t = self.parse_type().unwrap(); // TODO
[INFO] [stdout]     |                     ^ help: if this is intentional, prefix it with an underscore: `_t`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:401:40
[INFO] [stdout]     |
[INFO] [stdout] 401 |                     Some(Token::String(s)) => todo!(),
[INFO] [stdout]     |                                        ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `s`
[INFO] [stdout]    --> compiler/w_compiler/src/simpleatom.rs:402:38
[INFO] [stdout]     |
[INFO] [stdout] 402 |                     Some(Token::Char(s)) => todo!(),
[INFO] [stdout]     |                                      ^ help: if this is intentional, prefix it with an underscore: `_s`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]   --> compiler/w_compiler/src/toplevel.rs:36:13
[INFO] [stdout]    |
[INFO] [stdout] 36 |         let start = self.start;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `decl`
[INFO] [stdout]   --> compiler/w_compiler/src/toplevel.rs:44:13
[INFO] [stdout]    |
[INFO] [stdout] 44 |         let decl = self.parse_decl().unwrap();
[INFO] [stdout]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_decl`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]   --> compiler/w_compiler/src/toplevel.rs:60:13
[INFO] [stdout]    |
[INFO] [stdout] 60 |         let start = self.start;
[INFO] [stdout]    |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]   --> compiler/w_compiler/src/toplevel.rs:64:13
[INFO] [stdout]    |
[INFO] [stdout] 64 |         let end = loop {
[INFO] [stdout]    |             ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:172:13
[INFO] [stdout]     |
[INFO] [stdout] 172 |         let start = self.start;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `end`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:194:17
[INFO] [stdout]     |
[INFO] [stdout] 194 |             let end = loop {
[INFO] [stdout]     |                 ^^^ help: if this is intentional, prefix it with an underscore: `_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:236:13
[INFO] [stdout]     |
[INFO] [stdout] 236 |         let start = self.start;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `name`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:240:13
[INFO] [stdout]     |
[INFO] [stdout] 240 |         let name = self.expect_ident(&Some(Token::LeftBracket));
[INFO] [stdout]     |             ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `fields`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:241:13
[INFO] [stdout]     |
[INFO] [stdout] 241 |         let fields = self.type_body(false);
[INFO] [stdout]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_fields`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_struct`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:235:39
[INFO] [stdout]     |
[INFO] [stdout] 235 |     pub fn struct_or_union(&mut self, is_struct: bool) {
[INFO] [stdout]     |                                       ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_struct`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `start`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:259:13
[INFO] [stdout]     |
[INFO] [stdout] 259 |         let start = self.start;
[INFO] [stdout]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_start`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `paren_end`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:265:13
[INFO] [stdout]     |
[INFO] [stdout] 265 |         let paren_end = match self.tk {
[INFO] [stdout]     |             ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_paren_end`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `exported`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:256:32
[INFO] [stdout]     |
[INFO] [stdout] 256 |     pub fn function(&mut self, exported: bool, static_: bool) {
[INFO] [stdout]     |                                ^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_exported`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `static_`
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:256:48
[INFO] [stdout]     |
[INFO] [stdout] 256 |     pub fn function(&mut self, exported: bool, static_: bool) {
[INFO] [stdout]     |                                                ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_static_`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `module`
[INFO] [stdout]   --> compiler/w_compiler/src/types/mod.rs:18:27
[INFO] [stdout]    |
[INFO] [stdout] 18 |     fn coerce_inner(self, module: &mut S, to: Type) -> Result<Value<S>, Value<S>> {
[INFO] [stdout]    |                           ^^^^^^ help: if this is intentional, prefix it with an underscore: `_module`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `is_struct`
[INFO] [stdout]    --> compiler/w_compiler/src/lib.rs:355:25
[INFO] [stdout]     |
[INFO] [stdout] 355 |                     let is_struct = ch == &Token::Struct;
[INFO] [stdout]     |                         ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_is_struct`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `body`
[INFO] [stdout]    --> compiler/w_compiler/src/lib.rs:357:25
[INFO] [stdout]     |
[INFO] [stdout] 357 |                     let body = self.type_body(true);
[INFO] [stdout]     |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_body`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `get_temp_local` and `free_temp_local` are never used
[INFO] [stdout]   --> compiler/w_compiler/src/util/locals.rs:30:12
[INFO] [stdout]    |
[INFO] [stdout] 17 | impl Flow {
[INFO] [stdout]    | --------- methods in this implementation
[INFO] [stdout] ...
[INFO] [stdout] 30 |     pub fn get_temp_local(&mut self, t: Type) -> (String, usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 50 |     pub fn free_temp_local<S: Serializer>(&mut self, t: Type, index: usize) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `0` is never read
[INFO] [stdout]  --> compiler/w_compiler/src/util/registry.rs:6:10
[INFO] [stdout]   |
[INFO] [stdout] 6 |     Enum(HashMap<&'ast str, i64>),
[INFO] [stdout]   |     ---- ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |     |
[INFO] [stdout]   |     field in this variant
[INFO] [stdout]   |
[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] 6 |     Enum(()),
[INFO] [stdout]   |          ~~
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variants `Struct`, `Union`, and `Global` are never constructed
[INFO] [stdout]  --> compiler/w_compiler/src/util/registry.rs:7:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub enum Item<'ast> {
[INFO] [stdout]   |          ---- variants in this enum
[INFO] [stdout] 6 |     Enum(HashMap<&'ast str, i64>),
[INFO] [stdout] 7 |     Struct(HashMap<&'ast str, (Type, i32)>),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 8 |     Union(HashMap<&'ast str, Type>),
[INFO] [stdout]   |     ^^^^^
[INFO] [stdout] 9 |     Global(&'ast str, Type),
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `Registry::<'ast>::push` that must be used
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:179:13
[INFO] [stdout]     |
[INFO] [stdout] 179 |             self.registry.push(name, Item::Enum(fields));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 179 |             let _ = self.registry.push(name, Item::Enum(fields));
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `SymbolStack::<'ast>::push` that must be used
[INFO] [stdout]    --> compiler/w_compiler/src/toplevel.rs:327:13
[INFO] [stdout]     |
[INFO] [stdout] 327 |             self.symbols.push(param.ident, Binding::Type(param.typ));
[INFO] [stdout]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 327 |             let _ = self.symbols.push(param.ident, Binding::Type(param.typ));
[INFO] [stdout]     |             +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling w_session v0.0.0 (/opt/rustwide/workdir/compiler/w_session)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.05s
[INFO] running `Command { std: "docker" "inspect" "90d199d0db7fe7037e6d6d5b7de846fb62688dfd4fdd6652037ae4c3e2484cbe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "90d199d0db7fe7037e6d6d5b7de846fb62688dfd4fdd6652037ae4c3e2484cbe", kill_on_drop: false }`
[INFO] [stdout] 90d199d0db7fe7037e6d6d5b7de846fb62688dfd4fdd6652037ae4c3e2484cbe