[INFO] updating cached repository https://github.com/zesterer/bread
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/zesterer/bread
[INFO] [stderr]    929b029..dde3050  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] dde305027a037982b459af642530c75751046bbb
[INFO] checking zesterer/bread against master#7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3 for pr-71873
[INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzesterer%2Fbread" "/workspace/builds/worker-11/source"`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zesterer/bread on toolchain 7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/zesterer/bread
[INFO] finished tweaking git repo https://github.com/zesterer/bread
[INFO] tweaked toml for git repo https://github.com/zesterer/bread written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/zesterer/bread already has a lockfile, it will not be regenerated
[INFO] running `"/workspace/cargo-home/bin/cargo" "+7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+7c59a81a5fcbaaca311f744cd7c68d99bfbb05d3" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] ef861198f55d71241bf2018be9267d66ffa86d7a94f3f7764757b35cf0f24432
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `"docker" "start" "-a" "ef861198f55d71241bf2018be9267d66ffa86d7a94f3f7764757b35cf0f24432"`
[INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted
[INFO] [stderr]    Compiling libc v0.2.66
[INFO] [stderr]     Checking void v1.0.2
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling serde v1.0.104
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking utf8parse v0.1.1
[INFO] [stderr]     Checking parze v0.1.0 (https://github.com/zesterer/parze-new.git#d42e00db)
[INFO] [stderr]     Checking bitmaps v2.0.0
[INFO] [stderr]     Checking unreachable v0.1.1
[INFO] [stderr]     Checking rand_xoshiro v0.4.0
[INFO] [stderr]     Checking itertools v0.8.2
[INFO] [stderr]     Checking nanbox v0.2.0
[INFO] [stderr]    Compiling im-rc v14.1.0
[INFO] [stderr]     Checking thread-id v3.3.0
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking dirs-sys v0.3.4
[INFO] [stderr]     Checking nix v0.14.1
[INFO] [stderr]     Checking thread_local v0.3.3
[INFO] [stderr]     Checking dirs v2.0.2
[INFO] [stderr]     Checking state v0.4.1
[INFO] [stderr]     Checking sized-chunks v0.5.1
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking tinyset v0.4.2
[INFO] [stderr]     Checking rustyline v6.0.0
[INFO] [stderr]     Checking internment v0.3.12
[INFO] [stderr]     Checking tao v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]   --> src/error.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |         Self::custom(format!("Unexpected character '{}'", c))
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]   --> src/error.rs:71:9
[INFO] [stderr]    |
[INFO] [stderr] 71 |         Self::custom(format!("Unexpected end of input"))
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]   --> src/error.rs:75:9
[INFO] [stderr]    |
[INFO] [stderr] 75 |         Self::custom(format!("Expected end of input, found '{}'", c))
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]   --> src/error.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 |         Self::custom(format!("Unexpected token '{}'", **sym))
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/error.rs:101:9
[INFO] [stderr]     |
[INFO] [stderr] 101 |         Self::custom(format!("Unexpected end of input"))
[INFO] [stderr]     |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/error.rs:105:9
[INFO] [stderr]     |
[INFO] [stderr] 105 |         Self::custom(format!("Expected end of input, found '{}'", **sym))
[INFO] [stderr]     |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/ty.rs:498:52
[INFO] [stderr]     |
[INFO] [stderr] 498 |         self.unify_inner(0, a, b).map_err(|(x, y)| Error::custom(format!(
[INFO] [stderr]     |                                                    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/ty.rs:601:25
[INFO] [stderr]     |
[INFO] [stderr] 601 |                     Err(Error::custom(format!(
[INFO] [stderr]     |                         ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/ty.rs:705:25
[INFO] [stderr]     |
[INFO] [stderr] 705 |                     Err(Error::custom(format!(
[INFO] [stderr]     |                         ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/ty.rs:791:44
[INFO] [stderr]     |
[INFO] [stderr] 791 |             ReconstructError::Recursive => Error::custom(format!("Recursive type"))
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/ty.rs:798:17
[INFO] [stderr]     |
[INFO] [stderr] 798 |                 Error::custom(msg)
[INFO] [stderr]     |                 ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/hir/mod.rs:209:21
[INFO] [stderr]     |
[INFO] [stderr] 209 |                 Err(Error::custom(format!("Primitive type '{}' cannot be parameterised", **name))
[INFO] [stderr]     |                     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/hir/mod.rs:218:25
[INFO] [stderr]     |
[INFO] [stderr] 218 |                     Err(Error::custom(format!("Type '{}' expected {} parameters, found {}", **name, generics.len(), params.len()))
[INFO] [stderr]     |                         ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/hir/mod.rs:231:21
[INFO] [stderr]     |
[INFO] [stderr] 231 |                 Err(Error::custom(format!("No such data type '{}'", **name))
[INFO] [stderr]     |                     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/hir/mod.rs:345:77
[INFO] [stderr]     |
[INFO] [stderr] 345 |                     Expr::Func(param, _) if param.pat.is_refutable() => Err(Error::custom(format!("Refutable pattern may not be used here"))
[INFO] [stderr]     |                                                                             ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/hir/mod.rs:365:24
[INFO] [stderr]     |
[INFO] [stderr] 365 |             return Err(Error::custom(format!("Definition with name '{}' already exists", **ast_def.name))
[INFO] [stderr]     |                        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/hir/mod.rs:411:28
[INFO] [stderr]     |
[INFO] [stderr] 411 |                 return Err(Error::custom(format!("Type parameter '{}' must be mentioned by type {}", **gen, **body.ty()))
[INFO] [stderr]     |                            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/hir/mod.rs:459:28
[INFO] [stderr]     |
[INFO] [stderr] 459 |                 return Err(Error::custom(format!("Type parameter '{}' must be mentioned by type {}", **gen, *ty))
[INFO] [stderr]     |                            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/hir/mod.rs:630:32
[INFO] [stderr]     |
[INFO] [stderr] 630 |                     return Err(Error::custom(format!("No such binding '{}' in scope", path.base().to_string()))
[INFO] [stderr]     |                                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/hir/mod.rs:779:32
[INFO] [stderr]     |
[INFO] [stderr] 779 |                     return Err(Error::custom(format!("Match requires irrefutable pattern somewhere (TODO: Implement proper exhaustivity checks)"))
[INFO] [stderr]     |                                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/hir/mod.rs:811:13
[INFO] [stderr]     |
[INFO] [stderr] 811 |             Pat::Tuple(items) => Pat::Tuple(items
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/mir.rs:358:13
[INFO] [stderr]     |
[INFO] [stderr] 358 |             expr => todo!("{:?}", expr),
[INFO] [stderr]     |             ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/vm/compile.rs:189:13
[INFO] [stderr]     |
[INFO] [stderr] 189 |             expr => todo!("{:?}", expr),
[INFO] [stderr]     |             ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sc`
[INFO] [stderr]    --> src/lex.rs:213:32
[INFO] [stderr]     |
[INFO] [stderr] 213 |             .or(just('<').map(|sc| Token::Op(Op::Less)))
[INFO] [stderr]     |                                ^^ help: if this is intentional, prefix it with an underscore: `_sc`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sc`
[INFO] [stderr]    --> src/lex.rs:214:32
[INFO] [stderr]     |
[INFO] [stderr] 214 |             .or(just('>').map(|sc| Token::Op(Op::More)))
[INFO] [stderr]     |                                ^^ help: if this is intentional, prefix it with an underscore: `_sc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sc`
[INFO] [stderr]    --> src/lex.rs:215:32
[INFO] [stderr]     |
[INFO] [stderr] 215 |             .or(just('!').map(|sc| Token::Op(Op::Not)))
[INFO] [stderr]     |                                ^^ help: if this is intentional, prefix it with an underscore: `_sc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sc`
[INFO] [stderr]    --> src/lex.rs:216:32
[INFO] [stderr]     |
[INFO] [stderr] 216 |             .or(just(',').map(|sc| Token::Comma))
[INFO] [stderr]     |                                ^^ help: if this is intentional, prefix it with an underscore: `_sc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sc`
[INFO] [stderr]    --> src/lex.rs:217:32
[INFO] [stderr]     |
[INFO] [stderr] 217 |             .or(just(':').map(|sc| Token::Colon))
[INFO] [stderr]     |                                ^^ help: if this is intentional, prefix it with an underscore: `_sc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sc`
[INFO] [stderr]    --> src/lex.rs:218:32
[INFO] [stderr]     |
[INFO] [stderr] 218 |             .or(just('.').map(|sc| Token::Dot))
[INFO] [stderr]     |                                ^^ help: if this is intentional, prefix it with an underscore: `_sc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sc`
[INFO] [stderr]    --> src/lex.rs:219:32
[INFO] [stderr]     |
[INFO] [stderr] 219 |             .or(just('?').map(|sc| Token::QuestionMark))
[INFO] [stderr]     |                                ^^ help: if this is intentional, prefix it with an underscore: `_sc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sc`
[INFO] [stderr]    --> src/lex.rs:220:32
[INFO] [stderr]     |
[INFO] [stderr] 220 |             .or(just('|').map(|sc| Token::Pipe))
[INFO] [stderr]     |                                ^^ help: if this is intentional, prefix it with an underscore: `_sc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]    --> src/lex.rs:137:32
[INFO] [stderr]     |
[INFO] [stderr] 137 |             Token::Tree(delim, tokens) => write!(f, "{}...{}", delim.left(), delim.right()),
[INFO] [stderr]     |                                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `from_a`
[INFO] [stderr]    --> src/src.rs:133:26
[INFO] [stderr]     |
[INFO] [stderr] 133 |             (Span::Range(from_a, until_a), Span::Range(from_b, until_b)) =>
[INFO] [stderr]     |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_from_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `from_b`
[INFO] [stderr]    --> src/src.rs:133:56
[INFO] [stderr]     |
[INFO] [stderr] 133 |             (Span::Range(from_a, until_a), Span::Range(from_b, until_b)) =>
[INFO] [stderr]     |                                                        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_from_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]    --> src/src.rs:204:15
[INFO] [stderr]     |
[INFO] [stderr] 204 |     fn single(index: usize, sym: &SrcNode<T>) -> Self {
[INFO] [stderr]     |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]   --> src/error.rs:34:25
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn at(mut self, span: Span) -> Self {
[INFO] [stderr]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_span`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]   --> src/error.rs:39:28
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn merge(mut self, mut other: Self) -> Self {
[INFO] [stderr]    |                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `thing`
[INFO] [stderr]   --> src/error.rs:79:27
[INFO] [stderr]    |
[INFO] [stderr] 79 |     fn expected(mut self, thing: Self::Thing) -> Self {
[INFO] [stderr]    |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_thing`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `thing`
[INFO] [stderr]    --> src/error.rs:110:27
[INFO] [stderr]     |
[INFO] [stderr] 110 |     fn expected(mut self, thing: Self::Thing) -> Self {
[INFO] [stderr]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_thing`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `end_col`
[INFO] [stderr]    --> src/error.rs:134:62
[INFO] [stderr]     |
[INFO] [stderr] 134 |             if let Some(((start_line, start_col), (end_line, end_col))) = span_iter
[INFO] [stderr]     |                                                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_end_col`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/error.rs:161:46
[INFO] [stderr]     |
[INFO] [stderr] 161 | ...                   if let Some((span, is_primary)) = span_iter
[INFO] [stderr]     |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_span`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `atom`
[INFO] [stderr]    --> src/ast.rs:193:21
[INFO] [stderr]     |
[INFO] [stderr] 193 |                 let atom = atom.link();
[INFO] [stderr]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_atom`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `paren_ty_list`
[INFO] [stderr]    --> src/ast.rs:229:21
[INFO] [stderr]     |
[INFO] [stderr] 229 |                 let paren_ty_list = nested_parser(
[INFO] [stderr]     |                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_paren_ty_list`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/ast.rs:659:61
[INFO] [stderr]     |
[INFO] [stderr] 659 |             .map_with_span(|(((name, generics), ty), body), span| Decl::Def(Def {
[INFO] [stderr]     |                                                             ^^^^ help: if this is intentional, prefix it with an underscore: `_span`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/ast.rs:673:53
[INFO] [stderr]     |
[INFO] [stderr] 673 |             .map_with_span(|((name, generics), ty), span| Decl::TypeAlias(TypeAlias {
[INFO] [stderr]     |                                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_span`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/ast.rs:686:58
[INFO] [stderr]     |
[INFO] [stderr] 686 |             .map_with_span(|((name, generics), data_ty), span| Decl::Data(Data {
[INFO] [stderr]     |                                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_span`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `module`
[INFO] [stderr]    --> src/ast.rs:637:13
[INFO] [stderr]     |
[INFO] [stderr] 637 |         let module = module.link();
[INFO] [stderr]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_module`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `iter`
[INFO] [stderr]   --> src/ty.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |         let iter = match &**self {
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `iter`
[INFO] [stderr]   --> src/ty.rs:66:13
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let iter = match &mut **self {
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tr`
[INFO] [stderr]    --> src/ty.rs:439:42
[INFO] [stderr]     |
[INFO] [stderr] 439 |                     TypeInfo::Associated(tr, params, a, assoc) => {
[INFO] [stderr]     |                                          ^^ help: if this is intentional, prefix it with an underscore: `_tr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `this`
[INFO] [stderr]    --> src/ty.rs:638:35
[INFO] [stderr]     |
[INFO] [stderr] 638 | ...                   Some(|this: &mut Self, a, b| (TypeInfo::Primitive(Primitive::Number), TypeInfo::Primitive(Primitive::Number), TypeInfo::Primitive(Primitive::Number)))
[INFO] [stderr]     |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_this`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/ty.rs:638:52
[INFO] [stderr]     |
[INFO] [stderr] 638 | ...                   Some(|this: &mut Self, a, b| (TypeInfo::Primitive(Primitive::Number), TypeInfo::Primitive(Primitive::Number), TypeInfo::Primitive(Primitive::Number)))
[INFO] [stderr]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/ty.rs:638:55
[INFO] [stderr]     |
[INFO] [stderr] 638 | ...                   Some(|this: &mut Self, a, b| (TypeInfo::Primitive(Primitive::Number), TypeInfo::Primitive(Primitive::Number), TypeInfo::Primitive(Primitive::Number)))
[INFO] [stderr]     |                                                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `this`
[INFO] [stderr]    --> src/ty.rs:654:35
[INFO] [stderr]     |
[INFO] [stderr] 654 | ...                   Some(|this: &mut Self, a, b| (TypeInfo::Primitive(Primitive::Boolean), TypeInfo::Primitive(Primitive::Number), TypeInfo::Primitive(Primitive::Number)))
[INFO] [stderr]     |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_this`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/ty.rs:654:52
[INFO] [stderr]     |
[INFO] [stderr] 654 | ...                   Some(|this: &mut Self, a, b| (TypeInfo::Primitive(Primitive::Boolean), TypeInfo::Primitive(Primitive::Number), TypeInfo::Primitive(Primitive::Number)))
[INFO] [stderr]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/ty.rs:654:55
[INFO] [stderr]     |
[INFO] [stderr] 654 | ...                   Some(|this: &mut Self, a, b| (TypeInfo::Primitive(Primitive::Boolean), TypeInfo::Primitive(Primitive::Number), TypeInfo::Primitive(Primitive::Number)))
[INFO] [stderr]     |                                                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `this`
[INFO] [stderr]    --> src/ty.rs:669:35
[INFO] [stderr]     |
[INFO] [stderr] 669 | ...                   Some(|this: &mut Self, a, b| (TypeInfo::Primitive(Primitive::Boolean), TypeInfo::Primitive(Primitive::Boolean), TypeInfo::Primitive(Primitive::Boolean)))
[INFO] [stderr]     |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_this`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/ty.rs:669:52
[INFO] [stderr]     |
[INFO] [stderr] 669 | ...                   Some(|this: &mut Self, a, b| (TypeInfo::Primitive(Primitive::Boolean), TypeInfo::Primitive(Primitive::Boolean), TypeInfo::Primitive(Primitive::Boolean)))
[INFO] [stderr]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/ty.rs:669:55
[INFO] [stderr]     |
[INFO] [stderr] 669 | ...                   Some(|this: &mut Self, a, b| (TypeInfo::Primitive(Primitive::Boolean), TypeInfo::Primitive(Primitive::Boolean), TypeInfo::Primitive(Primitive::Boolean)))
[INFO] [stderr]     |                                                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/ty.rs:685:55
[INFO] [stderr]     |
[INFO] [stderr] 685 | ...                   Some(|this: &mut Self, a, b| {
[INFO] [stderr]     |                                                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ty`
[INFO] [stderr]    --> src/ty.rs:768:21
[INFO] [stderr]     |
[INFO] [stderr] 768 |             Unknown(ty) => return Err(ReconstructError::Unknown(id)),
[INFO] [stderr]     |                     ^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `infer`
[INFO] [stderr]   --> src/hir/mod.rs:39:33
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn get_type_info(&self, infer: &mut InferCtx) -> TypeInfo {
[INFO] [stderr]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_infer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `items`
[INFO] [stderr]    --> src/hir/mod.rs:122:23
[INFO] [stderr]     |
[INFO] [stderr] 122 |             Pat::List(items) => true, // List could be different size
[INFO] [stderr]     |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_items`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/hir/mod.rs:324:14
[INFO] [stderr]     |
[INFO] [stderr] 324 |         for (name, def) in self.root.defs.iter() {
[INFO] [stderr]     |              ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/hir/mod.rs:489:64
[INFO] [stderr]     |
[INFO] [stderr] 489 |     fn get_def_type(&self, ident: Ident, infer: &mut InferCtx, span: Span) -> Option<(TypeId, Vec<(SrcNode<Ident>, TypeId)>)> {
[INFO] [stderr]     |                                                                ^^^^ help: if this is intentional, prefix it with an underscore: `_span`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `val_type_id`
[INFO] [stderr]    --> src/hir/mod.rs:718:21
[INFO] [stderr]     |
[INFO] [stderr] 718 |                 let val_type_id = val.type_id();
[INFO] [stderr]     |                     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val_type_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `extractor`
[INFO] [stderr]    --> src/mir.rs:180:28
[INFO] [stderr]     |
[INFO] [stderr] 180 |             Expr::MakeFunc(extractor, f_env, _) => {
[INFO] [stderr]     |                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extractor`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `entry`
[INFO] [stderr]    --> src/mir.rs:286:13
[INFO] [stderr]     |
[INFO] [stderr] 286 |         let entry = this.instantiate_def(prog, entry, Vec::new());
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_entry`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/vm/compile.rs:209:36
[INFO] [stderr]     |
[INFO] [stderr] 209 |                 hir::Value::String(x) => todo!(),
[INFO] [stderr]     |                                    ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]   --> src/error.rs:66:9
[INFO] [stderr]    |
[INFO] [stderr] 66 |         Self::custom(format!("Unexpected character '{}'", c))
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]   --> src/error.rs:71:9
[INFO] [stderr]    |
[INFO] [stderr] 71 |         Self::custom(format!("Unexpected end of input"))
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]   --> src/error.rs:75:9
[INFO] [stderr]    |
[INFO] [stderr] 75 |         Self::custom(format!("Expected end of input, found '{}'", c))
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]   --> src/error.rs:95:9
[INFO] [stderr]    |
[INFO] [stderr] 95 |         Self::custom(format!("Unexpected token '{}'", **sym))
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/error.rs:101:9
[INFO] [stderr]     |
[INFO] [stderr] 101 |         Self::custom(format!("Unexpected end of input"))
[INFO] [stderr]     |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/error.rs:105:9
[INFO] [stderr]     |
[INFO] [stderr] 105 |         Self::custom(format!("Expected end of input, found '{}'", **sym))
[INFO] [stderr]     |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/ty.rs:498:52
[INFO] [stderr]     |
[INFO] [stderr] 498 |         self.unify_inner(0, a, b).map_err(|(x, y)| Error::custom(format!(
[INFO] [stderr]     |                                                    ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/error.rs:34:15
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn at(mut self, span: Span) -> Self {
[INFO] [stderr]    |               ----^^^^
[INFO] [stderr]    |               |
[INFO] [stderr]    |               help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/error.rs:39:18
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn merge(mut self, mut other: Self) -> Self {
[INFO] [stderr]    |                  ----^^^^
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/error.rs:39:28
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn merge(mut self, mut other: Self) -> Self {
[INFO] [stderr]    |                            ----^^^^^
[INFO] [stderr]    |                            |
[INFO] [stderr]    |                            help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/error.rs:79:17
[INFO] [stderr]    |
[INFO] [stderr] 79 |     fn expected(mut self, thing: Self::Thing) -> Self {
[INFO] [stderr]    |                 ----^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/error.rs:110:17
[INFO] [stderr]     |
[INFO] [stderr] 110 |     fn expected(mut self, thing: Self::Thing) -> Self {
[INFO] [stderr]     |                 ----^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/ty.rs:601:25
[INFO] [stderr]     |
[INFO] [stderr] 601 |                     Err(Error::custom(format!(
[INFO] [stderr]     |                         ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/ty.rs:705:25
[INFO] [stderr]     |
[INFO] [stderr] 705 |                     Err(Error::custom(format!(
[INFO] [stderr]     |                         ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/ty.rs:791:44
[INFO] [stderr]     |
[INFO] [stderr] 791 |             ReconstructError::Recursive => Error::custom(format!("Recursive type"))
[INFO] [stderr]     |                                            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/ty.rs:798:17
[INFO] [stderr]     |
[INFO] [stderr] 798 |                 Error::custom(msg)
[INFO] [stderr]     |                 ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/hir/mod.rs:209:21
[INFO] [stderr]     |
[INFO] [stderr] 209 |                 Err(Error::custom(format!("Primitive type '{}' cannot be parameterised", **name))
[INFO] [stderr]     |                     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/hir/mod.rs:218:25
[INFO] [stderr]     |
[INFO] [stderr] 218 |                     Err(Error::custom(format!("Type '{}' expected {} parameters, found {}", **name, generics.len(), params.len()))
[INFO] [stderr]     |                         ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/hir/mod.rs:231:21
[INFO] [stderr]     |
[INFO] [stderr] 231 |                 Err(Error::custom(format!("No such data type '{}'", **name))
[INFO] [stderr]     |                     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/hir/mod.rs:345:77
[INFO] [stderr]     |
[INFO] [stderr] 345 |                     Expr::Func(param, _) if param.pat.is_refutable() => Err(Error::custom(format!("Refutable pattern may not be used here"))
[INFO] [stderr]     |                                                                             ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/hir/mod.rs:365:24
[INFO] [stderr]     |
[INFO] [stderr] 365 |             return Err(Error::custom(format!("Definition with name '{}' already exists", **ast_def.name))
[INFO] [stderr]     |                        ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/hir/mod.rs:411:28
[INFO] [stderr]     |
[INFO] [stderr] 411 |                 return Err(Error::custom(format!("Type parameter '{}' must be mentioned by type {}", **gen, **body.ty()))
[INFO] [stderr]     |                            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/hir/mod.rs:459:28
[INFO] [stderr]     |
[INFO] [stderr] 459 |                 return Err(Error::custom(format!("Type parameter '{}' must be mentioned by type {}", **gen, *ty))
[INFO] [stderr]     |                            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/hir/mod.rs:630:32
[INFO] [stderr]     |
[INFO] [stderr] 630 |                     return Err(Error::custom(format!("No such binding '{}' in scope", path.base().to_string()))
[INFO] [stderr]     |                                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'error::Error::custom'
[INFO] [stderr]    --> src/hir/mod.rs:779:32
[INFO] [stderr]     |
[INFO] [stderr] 779 |                     return Err(Error::custom(format!("Match requires irrefutable pattern somewhere (TODO: Implement proper exhaustivity checks)"))
[INFO] [stderr]     |                                ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/hir/mod.rs:384:17
[INFO] [stderr]     |
[INFO] [stderr] 384 |             let mut body = ast_def.body.to_hir(&data, &mut infer, &scope)?;
[INFO] [stderr]     |                 ----^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/vm/builder.rs:43:17
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn link(mut self, program: &mut Program) -> (CodeAddr, Vec<(CodeAddr, mir::DefId)>) {
[INFO] [stderr]    |                 ----^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/vm/vm.rs:8:20
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn execute(mut self, prog: &Program) -> Value {
[INFO] [stderr]   |                    ----^^^^
[INFO] [stderr]   |                    |
[INFO] [stderr]   |                    help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/vm/vm.rs:33:25
[INFO] [stderr]    |
[INFO] [stderr] 33 |                     let mut env = (0..n).map(|_| expr_stack.pop().unwrap()).collect();
[INFO] [stderr]    |                         ----^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/hir/mod.rs:811:13
[INFO] [stderr]     |
[INFO] [stderr] 811 |             Pat::Tuple(items) => Pat::Tuple(items
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unreachable_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/mir.rs:358:13
[INFO] [stderr]     |
[INFO] [stderr] 358 |             expr => todo!("{:?}", expr),
[INFO] [stderr]     |             ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unreachable pattern
[INFO] [stderr]    --> src/vm/compile.rs:189:13
[INFO] [stderr]     |
[INFO] [stderr] 189 |             expr => todo!("{:?}", expr),
[INFO] [stderr]     |             ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sc`
[INFO] [stderr]    --> src/lex.rs:213:32
[INFO] [stderr]     |
[INFO] [stderr] 213 |             .or(just('<').map(|sc| Token::Op(Op::Less)))
[INFO] [stderr]     |                                ^^ help: if this is intentional, prefix it with an underscore: `_sc`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sc`
[INFO] [stderr]    --> src/lex.rs:214:32
[INFO] [stderr]     |
[INFO] [stderr] 214 |             .or(just('>').map(|sc| Token::Op(Op::More)))
[INFO] [stderr]     |                                ^^ help: if this is intentional, prefix it with an underscore: `_sc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sc`
[INFO] [stderr]    --> src/lex.rs:215:32
[INFO] [stderr]     |
[INFO] [stderr] 215 |             .or(just('!').map(|sc| Token::Op(Op::Not)))
[INFO] [stderr]     |                                ^^ help: if this is intentional, prefix it with an underscore: `_sc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sc`
[INFO] [stderr]    --> src/lex.rs:216:32
[INFO] [stderr]     |
[INFO] [stderr] 216 |             .or(just(',').map(|sc| Token::Comma))
[INFO] [stderr]     |                                ^^ help: if this is intentional, prefix it with an underscore: `_sc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sc`
[INFO] [stderr]    --> src/lex.rs:217:32
[INFO] [stderr]     |
[INFO] [stderr] 217 |             .or(just(':').map(|sc| Token::Colon))
[INFO] [stderr]     |                                ^^ help: if this is intentional, prefix it with an underscore: `_sc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sc`
[INFO] [stderr]    --> src/lex.rs:218:32
[INFO] [stderr]     |
[INFO] [stderr] 218 |             .or(just('.').map(|sc| Token::Dot))
[INFO] [stderr]     |                                ^^ help: if this is intentional, prefix it with an underscore: `_sc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sc`
[INFO] [stderr]    --> src/lex.rs:219:32
[INFO] [stderr]     |
[INFO] [stderr] 219 |             .or(just('?').map(|sc| Token::QuestionMark))
[INFO] [stderr]     |                                ^^ help: if this is intentional, prefix it with an underscore: `_sc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `sc`
[INFO] [stderr]    --> src/lex.rs:220:32
[INFO] [stderr]     |
[INFO] [stderr] 220 |             .or(just('|').map(|sc| Token::Pipe))
[INFO] [stderr]     |                                ^^ help: if this is intentional, prefix it with an underscore: `_sc`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tokens`
[INFO] [stderr]    --> src/lex.rs:137:32
[INFO] [stderr]     |
[INFO] [stderr] 137 |             Token::Tree(delim, tokens) => write!(f, "{}...{}", delim.left(), delim.right()),
[INFO] [stderr]     |                                ^^^^^^ help: if this is intentional, prefix it with an underscore: `_tokens`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `from_a`
[INFO] [stderr]    --> src/src.rs:133:26
[INFO] [stderr]     |
[INFO] [stderr] 133 |             (Span::Range(from_a, until_a), Span::Range(from_b, until_b)) =>
[INFO] [stderr]     |                          ^^^^^^ help: if this is intentional, prefix it with an underscore: `_from_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `from_b`
[INFO] [stderr]    --> src/src.rs:133:56
[INFO] [stderr]     |
[INFO] [stderr] 133 |             (Span::Range(from_a, until_a), Span::Range(from_b, until_b)) =>
[INFO] [stderr]     |                                                        ^^^^^^ help: if this is intentional, prefix it with an underscore: `_from_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `index`
[INFO] [stderr]    --> src/src.rs:204:15
[INFO] [stderr]     |
[INFO] [stderr] 204 |     fn single(index: usize, sym: &SrcNode<T>) -> Self {
[INFO] [stderr]     |               ^^^^^ help: if this is intentional, prefix it with an underscore: `_index`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]   --> src/error.rs:34:25
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn at(mut self, span: Span) -> Self {
[INFO] [stderr]    |                         ^^^^ help: if this is intentional, prefix it with an underscore: `_span`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `other`
[INFO] [stderr]   --> src/error.rs:39:28
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn merge(mut self, mut other: Self) -> Self {
[INFO] [stderr]    |                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_other`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `thing`
[INFO] [stderr]   --> src/error.rs:79:27
[INFO] [stderr]    |
[INFO] [stderr] 79 |     fn expected(mut self, thing: Self::Thing) -> Self {
[INFO] [stderr]    |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_thing`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `thing`
[INFO] [stderr]    --> src/error.rs:110:27
[INFO] [stderr]     |
[INFO] [stderr] 110 |     fn expected(mut self, thing: Self::Thing) -> Self {
[INFO] [stderr]     |                           ^^^^^ help: if this is intentional, prefix it with an underscore: `_thing`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `end_col`
[INFO] [stderr]    --> src/error.rs:134:62
[INFO] [stderr]     |
[INFO] [stderr] 134 |             if let Some(((start_line, start_col), (end_line, end_col))) = span_iter
[INFO] [stderr]     |                                                              ^^^^^^^ help: if this is intentional, prefix it with an underscore: `_end_col`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/error.rs:161:46
[INFO] [stderr]     |
[INFO] [stderr] 161 | ...                   if let Some((span, is_primary)) = span_iter
[INFO] [stderr]     |                                    ^^^^ help: if this is intentional, prefix it with an underscore: `_span`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `atom`
[INFO] [stderr]    --> src/ast.rs:193:21
[INFO] [stderr]     |
[INFO] [stderr] 193 |                 let atom = atom.link();
[INFO] [stderr]     |                     ^^^^ help: if this is intentional, prefix it with an underscore: `_atom`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `paren_ty_list`
[INFO] [stderr]    --> src/ast.rs:229:21
[INFO] [stderr]     |
[INFO] [stderr] 229 |                 let paren_ty_list = nested_parser(
[INFO] [stderr]     |                     ^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_paren_ty_list`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/ast.rs:659:61
[INFO] [stderr]     |
[INFO] [stderr] 659 |             .map_with_span(|(((name, generics), ty), body), span| Decl::Def(Def {
[INFO] [stderr]     |                                                             ^^^^ help: if this is intentional, prefix it with an underscore: `_span`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/ast.rs:673:53
[INFO] [stderr]     |
[INFO] [stderr] 673 |             .map_with_span(|((name, generics), ty), span| Decl::TypeAlias(TypeAlias {
[INFO] [stderr]     |                                                     ^^^^ help: if this is intentional, prefix it with an underscore: `_span`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/ast.rs:686:58
[INFO] [stderr]     |
[INFO] [stderr] 686 |             .map_with_span(|((name, generics), data_ty), span| Decl::Data(Data {
[INFO] [stderr]     |                                                          ^^^^ help: if this is intentional, prefix it with an underscore: `_span`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `module`
[INFO] [stderr]    --> src/ast.rs:637:13
[INFO] [stderr]     |
[INFO] [stderr] 637 |         let module = module.link();
[INFO] [stderr]     |             ^^^^^^ help: if this is intentional, prefix it with an underscore: `_module`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `iter`
[INFO] [stderr]   --> src/ty.rs:45:13
[INFO] [stderr]    |
[INFO] [stderr] 45 |         let iter = match &**self {
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `iter`
[INFO] [stderr]   --> src/ty.rs:66:13
[INFO] [stderr]    |
[INFO] [stderr] 66 |         let iter = match &mut **self {
[INFO] [stderr]    |             ^^^^ help: if this is intentional, prefix it with an underscore: `_iter`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tr`
[INFO] [stderr]    --> src/ty.rs:439:42
[INFO] [stderr]     |
[INFO] [stderr] 439 |                     TypeInfo::Associated(tr, params, a, assoc) => {
[INFO] [stderr]     |                                          ^^ help: if this is intentional, prefix it with an underscore: `_tr`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `this`
[INFO] [stderr]    --> src/ty.rs:638:35
[INFO] [stderr]     |
[INFO] [stderr] 638 | ...                   Some(|this: &mut Self, a, b| (TypeInfo::Primitive(Primitive::Number), TypeInfo::Primitive(Primitive::Number), TypeInfo::Primitive(Primitive::Number)))
[INFO] [stderr]     |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_this`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/ty.rs:638:52
[INFO] [stderr]     |
[INFO] [stderr] 638 | ...                   Some(|this: &mut Self, a, b| (TypeInfo::Primitive(Primitive::Number), TypeInfo::Primitive(Primitive::Number), TypeInfo::Primitive(Primitive::Number)))
[INFO] [stderr]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/ty.rs:638:55
[INFO] [stderr]     |
[INFO] [stderr] 638 | ...                   Some(|this: &mut Self, a, b| (TypeInfo::Primitive(Primitive::Number), TypeInfo::Primitive(Primitive::Number), TypeInfo::Primitive(Primitive::Number)))
[INFO] [stderr]     |                                                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `this`
[INFO] [stderr]    --> src/ty.rs:654:35
[INFO] [stderr]     |
[INFO] [stderr] 654 | ...                   Some(|this: &mut Self, a, b| (TypeInfo::Primitive(Primitive::Boolean), TypeInfo::Primitive(Primitive::Number), TypeInfo::Primitive(Primitive::Number)))
[INFO] [stderr]     |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_this`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Brace`
[INFO] [stderr]   --> src/lex.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     Brace,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/ty.rs:654:52
[INFO] [stderr]     |
[INFO] [stderr] 654 | ...                   Some(|this: &mut Self, a, b| (TypeInfo::Primitive(Primitive::Boolean), TypeInfo::Primitive(Primitive::Number), TypeInfo::Primitive(Primitive::Number)))
[INFO] [stderr]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `start`
[INFO] [stderr]   --> src/src.rs:12:18
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub const fn start() -> Self {
[INFO] [stderr]    |                  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `prev`
[INFO] [stderr]   --> src/src.rs:43:18
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub const fn prev(self) -> Self {
[INFO] [stderr]    |                  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `later_than`
[INFO] [stderr]   --> src/src.rs:47:12
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn later_than(self, other: Self) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `extend_to`
[INFO] [stderr]    --> src/src.rs:108:12
[INFO] [stderr]     |
[INFO] [stderr] 108 |     pub fn extend_to(self, limit: Loc) -> Self {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/ty.rs:654:55
[INFO] [stderr]     |
[INFO] [stderr] 654 | ...                   Some(|this: &mut Self, a, b| (TypeInfo::Primitive(Primitive::Boolean), TypeInfo::Primitive(Primitive::Number), TypeInfo::Primitive(Primitive::Number)))
[INFO] [stderr]     |                                                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `homogenize`
[INFO] [stderr]    --> src/src.rs:124:12
[INFO] [stderr]     |
[INFO] [stderr] 124 |     pub fn homogenize(self, other: Self) -> Self {
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `later_than`
[INFO] [stderr]    --> src/src.rs:131:12
[INFO] [stderr]     |
[INFO] [stderr] 131 |     pub fn later_than(self, other: Self) -> bool {
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `earliest`
[INFO] [stderr]    --> src/src.rs:139:12
[INFO] [stderr]     |
[INFO] [stderr] 139 |     pub fn earliest(self, other: Self) -> Self {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `map_inner`
[INFO] [stderr]   --> src/node.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn map_inner<V>(self, f: impl FnOnce(T) -> V) -> Node<V, U> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `this`
[INFO] [stderr]    --> src/ty.rs:669:35
[INFO] [stderr]     |
[INFO] [stderr] 669 | ...                   Some(|this: &mut Self, a, b| (TypeInfo::Primitive(Primitive::Boolean), TypeInfo::Primitive(Primitive::Boolean), TypeInfo::Primitive(Primitive::Boolean)))
[INFO] [stderr]     |                             ^^^^ help: if this is intentional, prefix it with an underscore: `_this`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `as_ref`
[INFO] [stderr]   --> src/node.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn as_ref(&self) -> Node<&T, U> where U: Clone {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `attr_mut`
[INFO] [stderr]   --> src/node.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn attr_mut(&mut self) -> &mut U { &mut self.1 }
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `at`
[INFO] [stderr]   --> src/error.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn at(mut self, span: Span) -> Self {
[INFO] [stderr]    |            ^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `a`
[INFO] [stderr]    --> src/ty.rs:669:52
[INFO] [stderr]     |
[INFO] [stderr] 669 | ...                   Some(|this: &mut Self, a, b| (TypeInfo::Primitive(Primitive::Boolean), TypeInfo::Primitive(Primitive::Boolean), TypeInfo::Primitive(Primitive::Boolean)))
[INFO] [stderr]     |                                              ^ help: if this is intentional, prefix it with an underscore: `_a`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `parts`
[INFO] [stderr]   --> src/ast.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn parts(&self) -> &[Ident] {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/ty.rs:669:55
[INFO] [stderr]     |
[INFO] [stderr] 669 | ...                   Some(|this: &mut Self, a, b| (TypeInfo::Primitive(Primitive::Boolean), TypeInfo::Primitive(Primitive::Boolean), TypeInfo::Primitive(Primitive::Boolean)))
[INFO] [stderr]     |                                                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Constructor`
[INFO] [stderr]    --> src/ast.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     Constructor(SrcNode<Ident>, SrcNode<Self>),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `b`
[INFO] [stderr]    --> src/ty.rs:685:55
[INFO] [stderr]     |
[INFO] [stderr] 685 | ...                   Some(|this: &mut Self, a, b| {
[INFO] [stderr]     |                                                 ^ help: if this is intentional, prefix it with an underscore: `_b`
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `visit_mut`
[INFO] [stderr]   --> src/ty.rs:65:12
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn visit_mut(self: &mut SrcNode<Self>, f: &mut impl FnMut(&mut SrcNode<Self>)) {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `substitute_generics`
[INFO] [stderr]   --> src/ty.rs:86:8
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn substitute_generics(self: &mut SrcNode<Self>, name: Ident, new_ty: SrcNode<Self>) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `GenericId`
[INFO] [stderr]    --> src/ty.rs:129:1
[INFO] [stderr]     |
[INFO] [stderr] 129 | pub type GenericId = usize;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Primitive`
[INFO] [stderr]    --> src/ty.rs:136:5
[INFO] [stderr]     |
[INFO] [stderr] 136 |     Primitive,
[INFO] [stderr]     |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ty`
[INFO] [stderr]    --> src/ty.rs:768:21
[INFO] [stderr]     |
[INFO] [stderr] 768 |             Unknown(ty) => return Err(ReconstructError::Unknown(id)),
[INFO] [stderr]     |                     ^^ help: if this is intentional, prefix it with an underscore: `_ty`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `infer`
[INFO] [stderr]   --> src/hir/mod.rs:39:33
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn get_type_info(&self, infer: &mut InferCtx) -> TypeInfo {
[INFO] [stderr]    |                                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_infer`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `items`
[INFO] [stderr]    --> src/hir/mod.rs:122:23
[INFO] [stderr]     |
[INFO] [stderr] 122 |             Pat::List(items) => true, // List could be different size
[INFO] [stderr]     |                       ^^^^^ help: if this is intentional, prefix it with an underscore: `_items`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Sum`
[INFO] [stderr]    --> src/ty.rs:137:5
[INFO] [stderr]     |
[INFO] [stderr] 137 |     Sum(Vec<Type>, HashMap<Ident, Type>),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/hir/mod.rs:324:14
[INFO] [stderr]     |
[INFO] [stderr] 324 |         for (name, def) in self.root.defs.iter() {
[INFO] [stderr]     |              ^^^^ help: if this is intentional, prefix it with an underscore: `_name`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Tuple`
[INFO] [stderr]    --> src/ty.rs:138:5
[INFO] [stderr]     |
[INFO] [stderr] 138 |     Tuple(Vec<Type>),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Record`
[INFO] [stderr]    --> src/ty.rs:139:5
[INFO] [stderr]     |
[INFO] [stderr] 139 |     Record(HashMap<Ident, Type>),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `id_counter`
[INFO] [stderr]    --> src/ty.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     id_counter: DataId,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `decls`
[INFO] [stderr]    --> src/ty.rs:145:5
[INFO] [stderr]     |
[INFO] [stderr] 145 |     decls: HashMap<DataId, (Vec<Ident>, DataType)>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new_id`
[INFO] [stderr]    --> src/ty.rs:149:8
[INFO] [stderr]     |
[INFO] [stderr] 149 |     fn new_id(&mut self) -> DataId {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `declare`
[INFO] [stderr]    --> src/ty.rs:154:12
[INFO] [stderr]     |
[INFO] [stderr] 154 |     pub fn declare(&mut self) -> DataId {
[INFO] [stderr]     |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define`
[INFO] [stderr]    --> src/ty.rs:158:12
[INFO] [stderr]     |
[INFO] [stderr] 158 |     pub fn define(&mut self, id: DataId, params: Vec<Ident>, data: DataType) {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `insert`
[INFO] [stderr]    --> src/ty.rs:162:12
[INFO] [stderr]     |
[INFO] [stderr] 162 |     pub fn insert(&mut self, params: Vec<Ident>, data: DataType) -> DataId {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `MustImpl`
[INFO] [stderr]    --> src/ty.rs:174:5
[INFO] [stderr]     |
[INFO] [stderr] 174 |     MustImpl(TraitId, Vec<Type>),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `params`
[INFO] [stderr]    --> src/ty.rs:185:5
[INFO] [stderr]     |
[INFO] [stderr] 185 |     params: Vec<Ident>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `tr`
[INFO] [stderr]    --> src/ty.rs:186:5
[INFO] [stderr]     |
[INFO] [stderr] 186 |     tr: (TraitId, Vec<Type>),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `target`
[INFO] [stderr]    --> src/ty.rs:187:5
[INFO] [stderr]     |
[INFO] [stderr] 187 |     target: Type,
[INFO] [stderr]     |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/hir/mod.rs:489:64
[INFO] [stderr]     |
[INFO] [stderr] 489 |     fn get_def_type(&self, ident: Ident, infer: &mut InferCtx, span: Span) -> Option<(TypeId, Vec<(SrcNode<Ident>, TypeId)>)> {
[INFO] [stderr]     |                                                                ^^^^ help: if this is intentional, prefix it with an underscore: `_span`
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `associated_types`
[INFO] [stderr]    --> src/ty.rs:188:5
[INFO] [stderr]     |
[INFO] [stderr] 188 |     associated_types: HashMap<Ident, Type>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `data_ctx`
[INFO] [stderr]    --> src/ty.rs:219:5
[INFO] [stderr]     |
[INFO] [stderr] 219 |     data_ctx: DataCtx,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Associated`
[INFO] [stderr]    --> src/ty.rs:303:5
[INFO] [stderr]     |
[INFO] [stderr] 303 |     Associated(TraitId, Vec<TypeId>, TypeId, Ident), // e.g: (Add<Int>, Int, "Output") = Int
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `intern`
[INFO] [stderr]   --> src/hir/mod.rs:52:12
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn intern<'a, T: ToString, I: IntoIterator<Item=T>>(parts: I) -> LocalIntern<Self> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from_path`
[INFO] [stderr]   --> src/hir/mod.rs:56:12
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn from_path(path: &ast::Path) -> LocalIntern<Self> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PhoneyData`
[INFO] [stderr]    --> src/hir/mod.rs:251:8
[INFO] [stderr]     |
[INFO] [stderr] 251 | struct PhoneyData {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `op_to_unary_trait`
[INFO] [stderr]    --> src/hir/mod.rs:256:4
[INFO] [stderr]     |
[INFO] [stderr] 256 | fn op_to_unary_trait(core: &Core, op: ast::UnaryOp) -> TraitId {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `op_to_binary_trait`
[INFO] [stderr]    --> src/hir/mod.rs:263:4
[INFO] [stderr]     |
[INFO] [stderr] 263 | fn op_to_binary_trait(core: &Core, op: ast::BinaryOp) -> TraitId {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `type_engine`
[INFO] [stderr]    --> src/hir/mod.rs:283:5
[INFO] [stderr]     |
[INFO] [stderr] 283 |     type_engine: TypeEngine,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `modules`
[INFO] [stderr]    --> src/hir/mod.rs:477:5
[INFO] [stderr]     |
[INFO] [stderr] 477 |     modules: HashMap<Ident, Module>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `traits`
[INFO] [stderr]    --> src/hir/mod.rs:478:5
[INFO] [stderr]     |
[INFO] [stderr] 478 |     traits: HashMap<Ident, Trait>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `datatypes`
[INFO] [stderr]    --> src/hir/mod.rs:479:5
[INFO] [stderr]     |
[INFO] [stderr] 479 |     datatypes: HashMap<Ident, Data>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Sum`
[INFO] [stderr]   --> src/mir.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     Sum(Vec<Self>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `global`
[INFO] [stderr]    --> src/mir.rs:291:12
[INFO] [stderr]     |
[INFO] [stderr] 291 |     pub fn global(&self, id: DefId) -> &RawTypeNode<Expr> {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `val_type_id`
[INFO] [stderr]    --> src/hir/mod.rs:718:21
[INFO] [stderr]     |
[INFO] [stderr] 718 |                 let val_type_id = val.type_id();
[INFO] [stderr]     |                     ^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_val_type_id`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `extractor`
[INFO] [stderr]    --> src/mir.rs:180:28
[INFO] [stderr]     |
[INFO] [stderr] 180 |             Expr::MakeFunc(extractor, f_env, _) => {
[INFO] [stderr]     |                            ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_extractor`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `entry`
[INFO] [stderr]    --> src/mir.rs:286:13
[INFO] [stderr]     |
[INFO] [stderr] 286 |         let entry = this.instantiate_def(prog, entry, Vec::new());
[INFO] [stderr]     |             ^^^^^ help: if this is intentional, prefix it with an underscore: `_entry`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `x`
[INFO] [stderr]    --> src/vm/compile.rs:209:36
[INFO] [stderr]     |
[INFO] [stderr] 209 |                 hir::Value::String(x) => todo!(),
[INFO] [stderr]     |                                    ^ help: if this is intentional, prefix it with an underscore: `_x`
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/ty.rs:828:9
[INFO] [stderr]     |
[INFO] [stderr] 828 |         ctx.unify(b, d);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/ty.rs:850:9
[INFO] [stderr]     |
[INFO] [stderr] 850 |         ctx.unify(a, b);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/ty.rs:851:9
[INFO] [stderr]     |
[INFO] [stderr] 851 |         ctx.unify(b, c);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/error.rs:34:15
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn at(mut self, span: Span) -> Self {
[INFO] [stderr]    |               ----^^^^
[INFO] [stderr]    |               |
[INFO] [stderr]    |               help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/error.rs:39:18
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn merge(mut self, mut other: Self) -> Self {
[INFO] [stderr]    |                  ----^^^^
[INFO] [stderr]    |                  |
[INFO] [stderr]    |                  help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/error.rs:39:28
[INFO] [stderr]    |
[INFO] [stderr] 39 |     pub fn merge(mut self, mut other: Self) -> Self {
[INFO] [stderr]    |                            ----^^^^^
[INFO] [stderr]    |                            |
[INFO] [stderr]    |                            help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/error.rs:79:17
[INFO] [stderr]    |
[INFO] [stderr] 79 |     fn expected(mut self, thing: Self::Thing) -> Self {
[INFO] [stderr]    |                 ----^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/error.rs:110:17
[INFO] [stderr]     |
[INFO] [stderr] 110 |     fn expected(mut self, thing: Self::Thing) -> Self {
[INFO] [stderr]     |                 ----^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: 126 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/hir/mod.rs:384:17
[INFO] [stderr]     |
[INFO] [stderr] 384 |             let mut body = ast_def.body.to_hir(&data, &mut infer, &scope)?;
[INFO] [stderr]     |                 ----^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/vm/builder.rs:43:17
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn link(mut self, program: &mut Program) -> (CodeAddr, Vec<(CodeAddr, mir::DefId)>) {
[INFO] [stderr]    |                 ----^^^^
[INFO] [stderr]    |                 |
[INFO] [stderr]    |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/vm/vm.rs:8:20
[INFO] [stderr]   |
[INFO] [stderr] 8 |     pub fn execute(mut self, prog: &Program) -> Value {
[INFO] [stderr]   |                    ----^^^^
[INFO] [stderr]   |                    |
[INFO] [stderr]   |                    help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/vm/vm.rs:33:25
[INFO] [stderr]    |
[INFO] [stderr] 33 |                     let mut env = (0..n).map(|_| expr_stack.pop().unwrap()).collect();
[INFO] [stderr]    |                         ----^^^
[INFO] [stderr]    |                         |
[INFO] [stderr]    |                         help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Brace`
[INFO] [stderr]   --> src/lex.rs:64:5
[INFO] [stderr]    |
[INFO] [stderr] 64 |     Brace,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `start`
[INFO] [stderr]   --> src/src.rs:12:18
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub const fn start() -> Self {
[INFO] [stderr]    |                  ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `prev`
[INFO] [stderr]   --> src/src.rs:43:18
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub const fn prev(self) -> Self {
[INFO] [stderr]    |                  ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `later_than`
[INFO] [stderr]   --> src/src.rs:47:12
[INFO] [stderr]    |
[INFO] [stderr] 47 |     pub fn later_than(self, other: Self) -> bool {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `extend_to`
[INFO] [stderr]    --> src/src.rs:108:12
[INFO] [stderr]     |
[INFO] [stderr] 108 |     pub fn extend_to(self, limit: Loc) -> Self {
[INFO] [stderr]     |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `homogenize`
[INFO] [stderr]    --> src/src.rs:124:12
[INFO] [stderr]     |
[INFO] [stderr] 124 |     pub fn homogenize(self, other: Self) -> Self {
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `later_than`
[INFO] [stderr]    --> src/src.rs:131:12
[INFO] [stderr]     |
[INFO] [stderr] 131 |     pub fn later_than(self, other: Self) -> bool {
[INFO] [stderr]     |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `earliest`
[INFO] [stderr]    --> src/src.rs:139:12
[INFO] [stderr]     |
[INFO] [stderr] 139 |     pub fn earliest(self, other: Self) -> Self {
[INFO] [stderr]     |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `map_inner`
[INFO] [stderr]   --> src/node.rs:24:12
[INFO] [stderr]    |
[INFO] [stderr] 24 |     pub fn map_inner<V>(self, f: impl FnOnce(T) -> V) -> Node<V, U> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `as_ref`
[INFO] [stderr]   --> src/node.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn as_ref(&self) -> Node<&T, U> where U: Clone {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `attr_mut`
[INFO] [stderr]   --> src/node.rs:40:12
[INFO] [stderr]    |
[INFO] [stderr] 40 |     pub fn attr_mut(&mut self) -> &mut U { &mut self.1 }
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `at`
[INFO] [stderr]   --> src/error.rs:34:12
[INFO] [stderr]    |
[INFO] [stderr] 34 |     pub fn at(mut self, span: Span) -> Self {
[INFO] [stderr]    |            ^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `parts`
[INFO] [stderr]   --> src/ast.rs:29:12
[INFO] [stderr]    |
[INFO] [stderr] 29 |     pub fn parts(&self) -> &[Ident] {
[INFO] [stderr]    |            ^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Constructor`
[INFO] [stderr]    --> src/ast.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     Constructor(SrcNode<Ident>, SrcNode<Self>),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `visit_mut`
[INFO] [stderr]   --> src/ty.rs:65:12
[INFO] [stderr]    |
[INFO] [stderr] 65 |     pub fn visit_mut(self: &mut SrcNode<Self>, f: &mut impl FnMut(&mut SrcNode<Self>)) {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `substitute_generics`
[INFO] [stderr]   --> src/ty.rs:86:8
[INFO] [stderr]    |
[INFO] [stderr] 86 |     fn substitute_generics(self: &mut SrcNode<Self>, name: Ident, new_ty: SrcNode<Self>) {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `GenericId`
[INFO] [stderr]    --> src/ty.rs:129:1
[INFO] [stderr]     |
[INFO] [stderr] 129 | pub type GenericId = usize;
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Primitive`
[INFO] [stderr]    --> src/ty.rs:136:5
[INFO] [stderr]     |
[INFO] [stderr] 136 |     Primitive,
[INFO] [stderr]     |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Sum`
[INFO] [stderr]    --> src/ty.rs:137:5
[INFO] [stderr]     |
[INFO] [stderr] 137 |     Sum(Vec<Type>, HashMap<Ident, Type>),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Tuple`
[INFO] [stderr]    --> src/ty.rs:138:5
[INFO] [stderr]     |
[INFO] [stderr] 138 |     Tuple(Vec<Type>),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Record`
[INFO] [stderr]    --> src/ty.rs:139:5
[INFO] [stderr]     |
[INFO] [stderr] 139 |     Record(HashMap<Ident, Type>),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `id_counter`
[INFO] [stderr]    --> src/ty.rs:144:5
[INFO] [stderr]     |
[INFO] [stderr] 144 |     id_counter: DataId,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `decls`
[INFO] [stderr]    --> src/ty.rs:145:5
[INFO] [stderr]     |
[INFO] [stderr] 145 |     decls: HashMap<DataId, (Vec<Ident>, DataType)>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `new_id`
[INFO] [stderr]    --> src/ty.rs:149:8
[INFO] [stderr]     |
[INFO] [stderr] 149 |     fn new_id(&mut self) -> DataId {
[INFO] [stderr]     |        ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `declare`
[INFO] [stderr]    --> src/ty.rs:154:12
[INFO] [stderr]     |
[INFO] [stderr] 154 |     pub fn declare(&mut self) -> DataId {
[INFO] [stderr]     |            ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `define`
[INFO] [stderr]    --> src/ty.rs:158:12
[INFO] [stderr]     |
[INFO] [stderr] 158 |     pub fn define(&mut self, id: DataId, params: Vec<Ident>, data: DataType) {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `insert`
[INFO] [stderr]    --> src/ty.rs:162:12
[INFO] [stderr]     |
[INFO] [stderr] 162 |     pub fn insert(&mut self, params: Vec<Ident>, data: DataType) -> DataId {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `MustImpl`
[INFO] [stderr]    --> src/ty.rs:174:5
[INFO] [stderr]     |
[INFO] [stderr] 174 |     MustImpl(TraitId, Vec<Type>),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `params`
[INFO] [stderr]    --> src/ty.rs:185:5
[INFO] [stderr]     |
[INFO] [stderr] 185 |     params: Vec<Ident>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `tr`
[INFO] [stderr]    --> src/ty.rs:186:5
[INFO] [stderr]     |
[INFO] [stderr] 186 |     tr: (TraitId, Vec<Type>),
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `target`
[INFO] [stderr]    --> src/ty.rs:187:5
[INFO] [stderr]     |
[INFO] [stderr] 187 |     target: Type,
[INFO] [stderr]     |     ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `associated_types`
[INFO] [stderr]    --> src/ty.rs:188:5
[INFO] [stderr]     |
[INFO] [stderr] 188 |     associated_types: HashMap<Ident, Type>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `data_ctx`
[INFO] [stderr]    --> src/ty.rs:219:5
[INFO] [stderr]     |
[INFO] [stderr] 219 |     data_ctx: DataCtx,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Associated`
[INFO] [stderr]    --> src/ty.rs:303:5
[INFO] [stderr]     |
[INFO] [stderr] 303 |     Associated(TraitId, Vec<TypeId>, TypeId, Ident), // e.g: (Add<Int>, Int, "Output") = Int
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `intern`
[INFO] [stderr]   --> src/hir/mod.rs:52:12
[INFO] [stderr]    |
[INFO] [stderr] 52 |     pub fn intern<'a, T: ToString, I: IntoIterator<Item=T>>(parts: I) -> LocalIntern<Self> {
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `from_path`
[INFO] [stderr]   --> src/hir/mod.rs:56:12
[INFO] [stderr]    |
[INFO] [stderr] 56 |     pub fn from_path(path: &ast::Path) -> LocalIntern<Self> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `PhoneyData`
[INFO] [stderr]    --> src/hir/mod.rs:251:8
[INFO] [stderr]     |
[INFO] [stderr] 251 | struct PhoneyData {
[INFO] [stderr]     |        ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `op_to_unary_trait`
[INFO] [stderr]    --> src/hir/mod.rs:256:4
[INFO] [stderr]     |
[INFO] [stderr] 256 | fn op_to_unary_trait(core: &Core, op: ast::UnaryOp) -> TraitId {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `op_to_binary_trait`
[INFO] [stderr]    --> src/hir/mod.rs:263:4
[INFO] [stderr]     |
[INFO] [stderr] 263 | fn op_to_binary_trait(core: &Core, op: ast::BinaryOp) -> TraitId {
[INFO] [stderr]     |    ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `type_engine`
[INFO] [stderr]    --> src/hir/mod.rs:283:5
[INFO] [stderr]     |
[INFO] [stderr] 283 |     type_engine: TypeEngine,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `modules`
[INFO] [stderr]    --> src/hir/mod.rs:477:5
[INFO] [stderr]     |
[INFO] [stderr] 477 |     modules: HashMap<Ident, Module>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `traits`
[INFO] [stderr]    --> src/hir/mod.rs:478:5
[INFO] [stderr]     |
[INFO] [stderr] 478 |     traits: HashMap<Ident, Trait>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never read: `datatypes`
[INFO] [stderr]    --> src/hir/mod.rs:479:5
[INFO] [stderr]     |
[INFO] [stderr] 479 |     datatypes: HashMap<Ident, Data>,
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Sum`
[INFO] [stderr]   --> src/mir.rs:22:5
[INFO] [stderr]    |
[INFO] [stderr] 22 |     Sum(Vec<Self>),
[INFO] [stderr]    |     ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `global`
[INFO] [stderr]    --> src/mir.rs:291:12
[INFO] [stderr]     |
[INFO] [stderr] 291 |     pub fn global(&self, id: DefId) -> &RawTypeNode<Expr> {
[INFO] [stderr]     |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: 123 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 48.60s
[INFO] running `"docker" "inspect" "ef861198f55d71241bf2018be9267d66ffa86d7a94f3f7764757b35cf0f24432"`
[INFO] running `"docker" "rm" "-f" "ef861198f55d71241bf2018be9267d66ffa86d7a94f3f7764757b35cf0f24432"`
[INFO] [stdout] ef861198f55d71241bf2018be9267d66ffa86d7a94f3f7764757b35cf0f24432