[INFO] updating cached repository https://github.com/luizlls/gris-lang
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"`
[INFO] [stderr] From https://github.com/luizlls/gris-lang
[INFO] [stderr]    94b5db5..96ac1e0  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 96ac1e026b9c7bd2d9702a8d462de9c5297034c9
[INFO] checking luizlls/gris-lang against master#fe6d05a8b32f5c66c427ca524dbcce5a7145f87e for pr-64327
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluizlls%2Fgris-lang" "work/builds/worker-4/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/luizlls/gris-lang on toolchain fe6d05a8b32f5c66c427ca524dbcce5a7145f87e-alt
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+fe6d05a8b32f5c66c427ca524dbcce5a7145f87e-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started tweaking git repo https://github.com/luizlls/gris-lang
[INFO] finished tweaking git repo https://github.com/luizlls/gris-lang
[INFO] tweaked toml for git repo https://github.com/luizlls/gris-lang written to work/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/luizlls/gris-lang already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+fe6d05a8b32f5c66c427ca524dbcce5a7145f87e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-4/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "+fe6d05a8b32f5c66c427ca524dbcce5a7145f87e-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2dd0c49858a99136497a7735c3b2f6e0dfec973431c49042d18af5c0f84b5a18
[INFO] running `"docker" "start" "-a" "2dd0c49858a99136497a7735c3b2f6e0dfec973431c49042d18af5c0f84b5a18"`
[INFO] [stderr]     Checking gris-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]   --> src/backend/types.rs:55:13
[INFO] [stderr]    |
[INFO] [stderr] 55 |             span,
[INFO] [stderr]    |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]   --> src/backend/types.rs:62:13
[INFO] [stderr]    |
[INFO] [stderr] 62 |             span,
[INFO] [stderr]    |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]   --> src/backend/types.rs:71:13
[INFO] [stderr]    |
[INFO] [stderr] 71 |             span,
[INFO] [stderr]    |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]   --> src/backend/types.rs:84:13
[INFO] [stderr]    |
[INFO] [stderr] 84 |             span,
[INFO] [stderr]    |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]   --> src/backend/types.rs:96:13
[INFO] [stderr]    |
[INFO] [stderr] 96 |             span,
[INFO] [stderr]    |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:108:13
[INFO] [stderr]     |
[INFO] [stderr] 108 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/backend/types.rs:231:13
[INFO] [stderr]     |
[INFO] [stderr] 231 |             value,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/backend/types.rs:238:13
[INFO] [stderr]     |
[INFO] [stderr] 238 |             value,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/backend/types.rs:245:13
[INFO] [stderr]     |
[INFO] [stderr] 245 |             value,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:252:13
[INFO] [stderr]     |
[INFO] [stderr] 252 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:259:13
[INFO] [stderr]     |
[INFO] [stderr] 259 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/backend/types.rs:260:13
[INFO] [stderr]     |
[INFO] [stderr] 260 |             value,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source`
[INFO] [stderr]    --> src/backend/types.rs:268:13
[INFO] [stderr]     |
[INFO] [stderr] 268 |             source,
[INFO] [stderr]     |             ^^^^^^ help: try ignoring the field: `source: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `target`
[INFO] [stderr]    --> src/backend/types.rs:267:13
[INFO] [stderr]     |
[INFO] [stderr] 267 |             target,
[INFO] [stderr]     |             ^^^^^^ help: try ignoring the field: `target: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lhs`
[INFO] [stderr]    --> src/backend/types.rs:276:13
[INFO] [stderr]     |
[INFO] [stderr] 276 |             lhs,
[INFO] [stderr]     |             ^^^ help: try ignoring the field: `lhs: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `opr`
[INFO] [stderr]    --> src/backend/types.rs:275:13
[INFO] [stderr]     |
[INFO] [stderr] 275 |             opr,
[INFO] [stderr]     |             ^^^ help: try ignoring the field: `opr: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rhs`
[INFO] [stderr]    --> src/backend/types.rs:277:13
[INFO] [stderr]     |
[INFO] [stderr] 277 |             rhs,
[INFO] [stderr]     |             ^^^ help: try ignoring the field: `rhs: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `opr`
[INFO] [stderr]    --> src/backend/types.rs:284:13
[INFO] [stderr]     |
[INFO] [stderr] 284 |             opr,
[INFO] [stderr]     |             ^^^ help: try ignoring the field: `opr: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rhs`
[INFO] [stderr]    --> src/backend/types.rs:285:13
[INFO] [stderr]     |
[INFO] [stderr] 285 |             rhs,
[INFO] [stderr]     |             ^^^ help: try ignoring the field: `rhs: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `nodes`
[INFO] [stderr]    --> src/backend/types.rs:292:13
[INFO] [stderr]     |
[INFO] [stderr] 292 |             nodes,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `nodes: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/backend/types.rs:300:13
[INFO] [stderr]     |
[INFO] [stderr] 300 |             args,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `args: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `func`
[INFO] [stderr]    --> src/backend/types.rs:299:13
[INFO] [stderr]     |
[INFO] [stderr] 299 |             func,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `func: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `main`
[INFO] [stderr]    --> src/backend/types.rs:307:13
[INFO] [stderr]     |
[INFO] [stderr] 307 |             main,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `main: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:308:13
[INFO] [stderr]     |
[INFO] [stderr] 308 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `elements`
[INFO] [stderr]    --> src/backend/types.rs:315:13
[INFO] [stderr]     |
[INFO] [stderr] 315 |             elements,
[INFO] [stderr]     |             ^^^^^^^^ help: try ignoring the field: `elements: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `head`
[INFO] [stderr]    --> src/backend/types.rs:328:13
[INFO] [stderr]     |
[INFO] [stderr] 328 |             head,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `head: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tail`
[INFO] [stderr]    --> src/backend/types.rs:329:13
[INFO] [stderr]     |
[INFO] [stderr] 329 |             tail,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `tail: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `base`
[INFO] [stderr]    --> src/backend/types.rs:337:13
[INFO] [stderr]     |
[INFO] [stderr] 337 |             base,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `base: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:336:13
[INFO] [stderr]     |
[INFO] [stderr] 336 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `props`
[INFO] [stderr]    --> src/backend/types.rs:338:13
[INFO] [stderr]     |
[INFO] [stderr] 338 |             props,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `props: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `otherwise`
[INFO] [stderr]    --> src/backend/types.rs:347:13
[INFO] [stderr]     |
[INFO] [stderr] 347 |             otherwise,
[INFO] [stderr]     |             ^^^^^^^^^ help: try ignoring the field: `otherwise: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `test`
[INFO] [stderr]    --> src/backend/types.rs:345:13
[INFO] [stderr]     |
[INFO] [stderr] 345 |             test,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `test: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `then`
[INFO] [stderr]    --> src/backend/types.rs:346:13
[INFO] [stderr]     |
[INFO] [stderr] 346 |             then,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `then: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cases`
[INFO] [stderr]    --> src/backend/types.rs:355:13
[INFO] [stderr]     |
[INFO] [stderr] 355 |             cases,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `cases: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]    --> src/backend/types.rs:354:13
[INFO] [stderr]     |
[INFO] [stderr] 354 |             expr,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `expr: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `otherwise`
[INFO] [stderr]    --> src/backend/types.rs:356:13
[INFO] [stderr]     |
[INFO] [stderr] 356 |             otherwise,
[INFO] [stderr]     |             ^^^^^^^^^ help: try ignoring the field: `otherwise: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/backend/types.rs:363:13
[INFO] [stderr]     |
[INFO] [stderr] 363 |             args,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `args: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `body`
[INFO] [stderr]    --> src/backend/types.rs:364:13
[INFO] [stderr]     |
[INFO] [stderr] 364 |             body,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `body: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `curr`
[INFO] [stderr]    --> src/backend/types.rs:372:13
[INFO] [stderr]     |
[INFO] [stderr] 372 |             curr,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `curr: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `prev`
[INFO] [stderr]    --> src/backend/types.rs:371:13
[INFO] [stderr]     |
[INFO] [stderr] 371 |             prev,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `prev: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]    --> src/backend/types.rs:222:34
[INFO] [stderr]     |
[INFO] [stderr] 222 | fn infer_expr(expr: UntypedExpr, ctx: &mut Context) -> Expr<Type> {
[INFO] [stderr]     |                                  ^^^ help: consider prefixing with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend/parser.rs:994:13
[INFO] [stderr]     |
[INFO] [stderr] 994 |         let mut args = self.parse_block_of(
[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: variant is never constructed: `Local`
[INFO] [stderr]   --> src/backend/ctx.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Local,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Variant`
[INFO] [stderr]   --> src/backend/ctx.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | /     Variant {
[INFO] [stderr] 16 | |         arity: u8
[INFO] [stderr] 17 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Function`
[INFO] [stderr]   --> src/backend/ctx.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | /     Function {
[INFO] [stderr] 20 | |         arity: u8
[INFO] [stderr] 21 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/backend/ctx.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `App`
[INFO] [stderr]   --> src/backend/types.rs:8:5
[INFO] [stderr]    |
[INFO] [stderr] 8  | /     App {
[INFO] [stderr] 9  | |         module: Option<String>,
[INFO] [stderr] 10 | |         name: String,
[INFO] [stderr] 11 | |         args: Vec<Type>,
[INFO] [stderr] 12 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Function`
[INFO] [stderr]   --> src/backend/types.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | /     Function {
[INFO] [stderr] 15 | |         args: Vec<Type>,
[INFO] [stderr] 16 | |         ret:  Box<Type>,
[INFO] [stderr] 17 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Type`
[INFO] [stderr]   --> src/backend/types.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | /     Type {
[INFO] [stderr] 20 | |         module: Option<String>,
[INFO] [stderr] 21 | |         name: String,
[INFO] [stderr] 22 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Tuple`
[INFO] [stderr]   --> src/backend/types.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 | /     Tuple {
[INFO] [stderr] 25 | |         args: Vec<Type>,
[INFO] [stderr] 26 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Record`
[INFO] [stderr]   --> src/backend/types.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 | /     Record {
[INFO] [stderr] 29 | |         props: Vec<(String, Type)>,
[INFO] [stderr] 30 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Var`
[INFO] [stderr]   --> src/backend/types.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 | /     Var {
[INFO] [stderr] 33 | |         name: String,
[INFO] [stderr] 34 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `unit`
[INFO] [stderr]   --> src/backend/types.rs:37:1
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn unit() -> Type {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `from_annotation`
[INFO] [stderr]   --> src/backend/types.rs:44:1
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn from_annotation(annotation: ast::Type) -> Type {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `infer_module`
[INFO] [stderr]    --> src/backend/types.rs:124:1
[INFO] [stderr]     |
[INFO] [stderr] 124 | pub fn infer_module(module: UntypedModule, ctx: &mut Context) -> Module<Type> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `infer_node`
[INFO] [stderr]    --> src/backend/types.rs:132:1
[INFO] [stderr]     |
[INFO] [stderr] 132 | fn infer_node(node: UntypedNode, ctx: &mut Context) -> Node<Type> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `infer_item`
[INFO] [stderr]    --> src/backend/types.rs:139:1
[INFO] [stderr]     |
[INFO] [stderr] 139 | fn infer_item(item: UntypedItem, ctx: &mut Context) -> Item<Type> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `infer_arg`
[INFO] [stderr]    --> src/backend/types.rs:205:1
[INFO] [stderr]     |
[INFO] [stderr] 205 | fn infer_arg(arg: ast::Arg<()>) -> ast::Arg<Type> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `infer_expr`
[INFO] [stderr]    --> src/backend/types.rs:222:1
[INFO] [stderr]     |
[INFO] [stderr] 222 | fn infer_expr(expr: UntypedExpr, ctx: &mut Context) -> Expr<Type> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `span`
[INFO] [stderr]   --> src/frontend/ast.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     pub fn span(&self) -> Span {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ty`
[INFO] [stderr]   --> src/frontend/ast.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn ty(&self) -> Option<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ty`
[INFO] [stderr]    --> src/frontend/ast.rs:221:5
[INFO] [stderr]     |
[INFO] [stderr] 221 |     pub fn ty(&self) -> Option<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `span`
[INFO] [stderr]    --> src/frontend/ast.rs:341:5
[INFO] [stderr]     |
[INFO] [stderr] 341 |     pub fn span(&self) -> Span {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]   --> src/backend/types.rs:55:13
[INFO] [stderr]    |
[INFO] [stderr] 55 |             span,
[INFO] [stderr]    |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]   --> src/backend/types.rs:62:13
[INFO] [stderr]    |
[INFO] [stderr] 62 |             span,
[INFO] [stderr]    |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]   --> src/backend/types.rs:71:13
[INFO] [stderr]    |
[INFO] [stderr] 71 |             span,
[INFO] [stderr]    |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]   --> src/backend/types.rs:84:13
[INFO] [stderr]    |
[INFO] [stderr] 84 |             span,
[INFO] [stderr]    |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]   --> src/backend/types.rs:96:13
[INFO] [stderr]    |
[INFO] [stderr] 96 |             span,
[INFO] [stderr]    |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:108:13
[INFO] [stderr]     |
[INFO] [stderr] 108 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:116:13
[INFO] [stderr]     |
[INFO] [stderr] 116 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/backend/types.rs:231:13
[INFO] [stderr]     |
[INFO] [stderr] 231 |             value,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/backend/types.rs:238:13
[INFO] [stderr]     |
[INFO] [stderr] 238 |             value,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/backend/types.rs:245:13
[INFO] [stderr]     |
[INFO] [stderr] 245 |             value,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:252:13
[INFO] [stderr]     |
[INFO] [stderr] 252 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:259:13
[INFO] [stderr]     |
[INFO] [stderr] 259 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/backend/types.rs:260:13
[INFO] [stderr]     |
[INFO] [stderr] 260 |             value,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `source`
[INFO] [stderr]    --> src/backend/types.rs:268:13
[INFO] [stderr]     |
[INFO] [stderr] 268 |             source,
[INFO] [stderr]     |             ^^^^^^ help: try ignoring the field: `source: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `target`
[INFO] [stderr]    --> src/backend/types.rs:267:13
[INFO] [stderr]     |
[INFO] [stderr] 267 |             target,
[INFO] [stderr]     |             ^^^^^^ help: try ignoring the field: `target: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lhs`
[INFO] [stderr]    --> src/backend/types.rs:276:13
[INFO] [stderr]     |
[INFO] [stderr] 276 |             lhs,
[INFO] [stderr]     |             ^^^ help: try ignoring the field: `lhs: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `opr`
[INFO] [stderr]    --> src/backend/types.rs:275:13
[INFO] [stderr]     |
[INFO] [stderr] 275 |             opr,
[INFO] [stderr]     |             ^^^ help: try ignoring the field: `opr: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rhs`
[INFO] [stderr]    --> src/backend/types.rs:277:13
[INFO] [stderr]     |
[INFO] [stderr] 277 |             rhs,
[INFO] [stderr]     |             ^^^ help: try ignoring the field: `rhs: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `opr`
[INFO] [stderr]    --> src/backend/types.rs:284:13
[INFO] [stderr]     |
[INFO] [stderr] 284 |             opr,
[INFO] [stderr]     |             ^^^ help: try ignoring the field: `opr: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rhs`
[INFO] [stderr]    --> src/backend/types.rs:285:13
[INFO] [stderr]     |
[INFO] [stderr] 285 |             rhs,
[INFO] [stderr]     |             ^^^ help: try ignoring the field: `rhs: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `nodes`
[INFO] [stderr]    --> src/backend/types.rs:292:13
[INFO] [stderr]     |
[INFO] [stderr] 292 |             nodes,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `nodes: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/backend/types.rs:300:13
[INFO] [stderr]     |
[INFO] [stderr] 300 |             args,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `args: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `func`
[INFO] [stderr]    --> src/backend/types.rs:299:13
[INFO] [stderr]     |
[INFO] [stderr] 299 |             func,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `func: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `main`
[INFO] [stderr]    --> src/backend/types.rs:307:13
[INFO] [stderr]     |
[INFO] [stderr] 307 |             main,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `main: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:308:13
[INFO] [stderr]     |
[INFO] [stderr] 308 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `elements`
[INFO] [stderr]    --> src/backend/types.rs:315:13
[INFO] [stderr]     |
[INFO] [stderr] 315 |             elements,
[INFO] [stderr]     |             ^^^^^^^^ help: try ignoring the field: `elements: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `head`
[INFO] [stderr]    --> src/backend/types.rs:328:13
[INFO] [stderr]     |
[INFO] [stderr] 328 |             head,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `head: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tail`
[INFO] [stderr]    --> src/backend/types.rs:329:13
[INFO] [stderr]     |
[INFO] [stderr] 329 |             tail,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `tail: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `base`
[INFO] [stderr]    --> src/backend/types.rs:337:13
[INFO] [stderr]     |
[INFO] [stderr] 337 |             base,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `base: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:336:13
[INFO] [stderr]     |
[INFO] [stderr] 336 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `props`
[INFO] [stderr]    --> src/backend/types.rs:338:13
[INFO] [stderr]     |
[INFO] [stderr] 338 |             props,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `props: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `otherwise`
[INFO] [stderr]    --> src/backend/types.rs:347:13
[INFO] [stderr]     |
[INFO] [stderr] 347 |             otherwise,
[INFO] [stderr]     |             ^^^^^^^^^ help: try ignoring the field: `otherwise: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `test`
[INFO] [stderr]    --> src/backend/types.rs:345:13
[INFO] [stderr]     |
[INFO] [stderr] 345 |             test,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `test: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `then`
[INFO] [stderr]    --> src/backend/types.rs:346:13
[INFO] [stderr]     |
[INFO] [stderr] 346 |             then,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `then: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cases`
[INFO] [stderr]    --> src/backend/types.rs:355:13
[INFO] [stderr]     |
[INFO] [stderr] 355 |             cases,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `cases: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]    --> src/backend/types.rs:354:13
[INFO] [stderr]     |
[INFO] [stderr] 354 |             expr,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `expr: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `otherwise`
[INFO] [stderr]    --> src/backend/types.rs:356:13
[INFO] [stderr]     |
[INFO] [stderr] 356 |             otherwise,
[INFO] [stderr]     |             ^^^^^^^^^ help: try ignoring the field: `otherwise: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/backend/types.rs:363:13
[INFO] [stderr]     |
[INFO] [stderr] 363 |             args,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `args: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `body`
[INFO] [stderr]    --> src/backend/types.rs:364:13
[INFO] [stderr]     |
[INFO] [stderr] 364 |             body,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `body: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `curr`
[INFO] [stderr]    --> src/backend/types.rs:372:13
[INFO] [stderr]     |
[INFO] [stderr] 372 |             curr,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `curr: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `prev`
[INFO] [stderr]    --> src/backend/types.rs:371:13
[INFO] [stderr]     |
[INFO] [stderr] 371 |             prev,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `prev: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `ctx`
[INFO] [stderr]    --> src/backend/types.rs:222:34
[INFO] [stderr]     |
[INFO] [stderr] 222 | fn infer_expr(expr: UntypedExpr, ctx: &mut Context) -> Expr<Type> {
[INFO] [stderr]     |                                  ^^^ help: consider prefixing with an underscore: `_ctx`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/frontend/parser.rs:994:13
[INFO] [stderr]     |
[INFO] [stderr] 994 |         let mut args = self.parse_block_of(
[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: variant is never constructed: `Local`
[INFO] [stderr]   --> src/backend/ctx.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 |     Local,
[INFO] [stderr]    |     ^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Variant`
[INFO] [stderr]   --> src/backend/ctx.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 | /     Variant {
[INFO] [stderr] 16 | |         arity: u8
[INFO] [stderr] 17 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Function`
[INFO] [stderr]   --> src/backend/ctx.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | /     Function {
[INFO] [stderr] 20 | |         arity: u8
[INFO] [stderr] 21 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/backend/ctx.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn new() -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `App`
[INFO] [stderr]   --> src/backend/types.rs:8:5
[INFO] [stderr]    |
[INFO] [stderr] 8  | /     App {
[INFO] [stderr] 9  | |         module: Option<String>,
[INFO] [stderr] 10 | |         name: String,
[INFO] [stderr] 11 | |         args: Vec<Type>,
[INFO] [stderr] 12 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Function`
[INFO] [stderr]   --> src/backend/types.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 | /     Function {
[INFO] [stderr] 15 | |         args: Vec<Type>,
[INFO] [stderr] 16 | |         ret:  Box<Type>,
[INFO] [stderr] 17 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Type`
[INFO] [stderr]   --> src/backend/types.rs:19:5
[INFO] [stderr]    |
[INFO] [stderr] 19 | /     Type {
[INFO] [stderr] 20 | |         module: Option<String>,
[INFO] [stderr] 21 | |         name: String,
[INFO] [stderr] 22 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Tuple`
[INFO] [stderr]   --> src/backend/types.rs:24:5
[INFO] [stderr]    |
[INFO] [stderr] 24 | /     Tuple {
[INFO] [stderr] 25 | |         args: Vec<Type>,
[INFO] [stderr] 26 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Record`
[INFO] [stderr]   --> src/backend/types.rs:28:5
[INFO] [stderr]    |
[INFO] [stderr] 28 | /     Record {
[INFO] [stderr] 29 | |         props: Vec<(String, Type)>,
[INFO] [stderr] 30 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Var`
[INFO] [stderr]   --> src/backend/types.rs:32:5
[INFO] [stderr]    |
[INFO] [stderr] 32 | /     Var {
[INFO] [stderr] 33 | |         name: String,
[INFO] [stderr] 34 | |     },
[INFO] [stderr]    | |_____^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `unit`
[INFO] [stderr]   --> src/backend/types.rs:37:1
[INFO] [stderr]    |
[INFO] [stderr] 37 | fn unit() -> Type {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `from_annotation`
[INFO] [stderr]   --> src/backend/types.rs:44:1
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn from_annotation(annotation: ast::Type) -> Type {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `infer_module`
[INFO] [stderr]    --> src/backend/types.rs:124:1
[INFO] [stderr]     |
[INFO] [stderr] 124 | pub fn infer_module(module: UntypedModule, ctx: &mut Context) -> Module<Type> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `infer_node`
[INFO] [stderr]    --> src/backend/types.rs:132:1
[INFO] [stderr]     |
[INFO] [stderr] 132 | fn infer_node(node: UntypedNode, ctx: &mut Context) -> Node<Type> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `infer_item`
[INFO] [stderr]    --> src/backend/types.rs:139:1
[INFO] [stderr]     |
[INFO] [stderr] 139 | fn infer_item(item: UntypedItem, ctx: &mut Context) -> Item<Type> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `infer_arg`
[INFO] [stderr]    --> src/backend/types.rs:205:1
[INFO] [stderr]     |
[INFO] [stderr] 205 | fn infer_arg(arg: ast::Arg<()>) -> ast::Arg<Type> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `infer_expr`
[INFO] [stderr]    --> src/backend/types.rs:222:1
[INFO] [stderr]     |
[INFO] [stderr] 222 | fn infer_expr(expr: UntypedExpr, ctx: &mut Context) -> Expr<Type> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `span`
[INFO] [stderr]   --> src/frontend/ast.rs:59:5
[INFO] [stderr]    |
[INFO] [stderr] 59 |     pub fn span(&self) -> Span {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ty`
[INFO] [stderr]   --> src/frontend/ast.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn ty(&self) -> Option<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ty`
[INFO] [stderr]    --> src/frontend/ast.rs:221:5
[INFO] [stderr]     |
[INFO] [stderr] 221 |     pub fn ty(&self) -> Option<T> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `span`
[INFO] [stderr]    --> src/frontend/ast.rs:341:5
[INFO] [stderr]     |
[INFO] [stderr] 341 |     pub fn span(&self) -> Span {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.75s
[INFO] running `"docker" "inspect" "2dd0c49858a99136497a7735c3b2f6e0dfec973431c49042d18af5c0f84b5a18"`
[INFO] running `"docker" "rm" "-f" "2dd0c49858a99136497a7735c3b2f6e0dfec973431c49042d18af5c0f84b5a18"`
[INFO] [stdout] 2dd0c49858a99136497a7735c3b2f6e0dfec973431c49042d18af5c0f84b5a18