[INFO] updating cached repository https://github.com/luizlls/gris-lang
[INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/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]    96ac1e0..6cdb059  master     -> master
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 6cdb0592d6b297a473cad9e27c293205450c3955
[INFO] testing luizlls/gris-lang against 1.38.0 for beta-1.39-1
[INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fluizlls%2Fgris-lang" "work/builds/worker-5/source"`
[INFO] [stderr] Cloning into 'work/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/luizlls/gris-lang on toolchain 1.38.0
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "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-5/source/Cargo.toml
[INFO] crate git repo https://github.com/luizlls/gris-lang already has a lockfile, it will not be regenerated
[INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/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=warn" "-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" "+1.38.0" "build" "--frozen"`
[INFO] [stdout] 7ed0c60482687f90da7bef2668d9347af8f2c04c78ca94543167f013713afc09
[INFO] running `"docker" "start" "-a" "7ed0c60482687f90da7bef2668d9347af8f2c04c78ca94543167f013713afc09"`
[INFO] [stderr]    Compiling gris-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:164:13
[INFO] [stderr]     |
[INFO] [stderr] 164 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `opr`
[INFO] [stderr]    --> src/backend/types.rs:197:13
[INFO] [stderr]     |
[INFO] [stderr] 197 |             opr,
[INFO] [stderr]     |             ^^^ help: try ignoring the field: `opr: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lhs`
[INFO] [stderr]    --> src/backend/types.rs:202:17
[INFO] [stderr]     |
[INFO] [stderr] 202 |             let lhs = infer_expr(*lhs, ctx);
[INFO] [stderr]     |                 ^^^ help: consider prefixing with an underscore: `_lhs`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rhs`
[INFO] [stderr]    --> src/backend/types.rs:203:17
[INFO] [stderr]     |
[INFO] [stderr] 203 |             let rhs = infer_expr(*rhs, ctx);
[INFO] [stderr]     |                 ^^^ help: consider prefixing with an underscore: `_rhs`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `opr`
[INFO] [stderr]    --> src/backend/types.rs:208:13
[INFO] [stderr]     |
[INFO] [stderr] 208 |             opr,
[INFO] [stderr]     |             ^^^ help: try ignoring the field: `opr: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rhs`
[INFO] [stderr]    --> src/backend/types.rs:212:17
[INFO] [stderr]     |
[INFO] [stderr] 212 |             let rhs = infer_expr(*rhs, ctx);
[INFO] [stderr]     |                 ^^^ help: consider prefixing with an underscore: `_rhs`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `func`
[INFO] [stderr]    --> src/backend/types.rs:234:17
[INFO] [stderr]     |
[INFO] [stderr] 234 |             let func = infer_expr(*func, ctx);
[INFO] [stderr]     |                 ^^^^ help: consider prefixing with an underscore: `_func`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/backend/types.rs:235:17
[INFO] [stderr]     |
[INFO] [stderr] 235 |             let args = args.into_iter().map(|arg| infer_expr(arg, ctx)).collect::<Vec<ast::Expr<Type>>>();
[INFO] [stderr]     |                 ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `main`
[INFO] [stderr]    --> src/backend/types.rs:240:13
[INFO] [stderr]     |
[INFO] [stderr] 240 |             main,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `main: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:241:13
[INFO] [stderr]     |
[INFO] [stderr] 241 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `head`
[INFO] [stderr]    --> src/backend/types.rs:270:13
[INFO] [stderr]     |
[INFO] [stderr] 270 |             head,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `head: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tail`
[INFO] [stderr]    --> src/backend/types.rs:271:13
[INFO] [stderr]     |
[INFO] [stderr] 271 |             tail,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `tail: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `base`
[INFO] [stderr]    --> src/backend/types.rs:279:13
[INFO] [stderr]     |
[INFO] [stderr] 279 |             base,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `base: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:278:13
[INFO] [stderr]     |
[INFO] [stderr] 278 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `props`
[INFO] [stderr]    --> src/backend/types.rs:280:13
[INFO] [stderr]     |
[INFO] [stderr] 280 |             props,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `props: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `otherwise`
[INFO] [stderr]    --> src/backend/types.rs:289:13
[INFO] [stderr]     |
[INFO] [stderr] 289 |             otherwise,
[INFO] [stderr]     |             ^^^^^^^^^ help: try ignoring the field: `otherwise: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `test`
[INFO] [stderr]    --> src/backend/types.rs:287:13
[INFO] [stderr]     |
[INFO] [stderr] 287 |             test,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `test: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `then`
[INFO] [stderr]    --> src/backend/types.rs:288:13
[INFO] [stderr]     |
[INFO] [stderr] 288 |             then,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `then: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cases`
[INFO] [stderr]    --> src/backend/types.rs:297:13
[INFO] [stderr]     |
[INFO] [stderr] 297 |             cases,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `cases: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]    --> src/backend/types.rs:296:13
[INFO] [stderr]     |
[INFO] [stderr] 296 |             expr,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `expr: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `otherwise`
[INFO] [stderr]    --> src/backend/types.rs:298:13
[INFO] [stderr]     |
[INFO] [stderr] 298 |             otherwise,
[INFO] [stderr]     |             ^^^^^^^^^ help: try ignoring the field: `otherwise: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/backend/types.rs:305:13
[INFO] [stderr]     |
[INFO] [stderr] 305 |             args,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `args: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `body`
[INFO] [stderr]    --> src/backend/types.rs:306:13
[INFO] [stderr]     |
[INFO] [stderr] 306 |             body,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `body: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `curr`
[INFO] [stderr]    --> src/backend/types.rs:314:13
[INFO] [stderr]     |
[INFO] [stderr] 314 |             curr,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `curr: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `prev`
[INFO] [stderr]    --> src/backend/types.rs:313:13
[INFO] [stderr]     |
[INFO] [stderr] 313 |             prev,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `prev: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:375:13
[INFO] [stderr]     |
[INFO] [stderr] 375 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:382:13
[INFO] [stderr]     |
[INFO] [stderr] 382 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:391:13
[INFO] [stderr]     |
[INFO] [stderr] 391 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:404:13
[INFO] [stderr]     |
[INFO] [stderr] 404 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:416:13
[INFO] [stderr]     |
[INFO] [stderr] 416 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:423:13
[INFO] [stderr]     |
[INFO] [stderr] 423 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:430:13
[INFO] [stderr]     |
[INFO] [stderr] 430 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:441:13
[INFO] [stderr]     |
[INFO] [stderr] 441 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:448:13
[INFO] [stderr]     |
[INFO] [stderr] 448 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/backend/types.rs:447:13
[INFO] [stderr]     |
[INFO] [stderr] 447 |             value,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:455:13
[INFO] [stderr]     |
[INFO] [stderr] 455 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/backend/types.rs:454:13
[INFO] [stderr]     |
[INFO] [stderr] 454 |             value,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:462:13
[INFO] [stderr]     |
[INFO] [stderr] 462 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/backend/types.rs:461:13
[INFO] [stderr]     |
[INFO] [stderr] 461 |             value,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:468:13
[INFO] [stderr]     |
[INFO] [stderr] 468 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:469:13
[INFO] [stderr]     |
[INFO] [stderr] 469 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `elements`
[INFO] [stderr]    --> src/backend/types.rs:475:13
[INFO] [stderr]     |
[INFO] [stderr] 475 |             elements,
[INFO] [stderr]     |             ^^^^^^^^ help: try ignoring the field: `elements: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:476:13
[INFO] [stderr]     |
[INFO] [stderr] 476 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:482:13
[INFO] [stderr]     |
[INFO] [stderr] 482 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `head`
[INFO] [stderr]    --> src/backend/types.rs:488:13
[INFO] [stderr]     |
[INFO] [stderr] 488 |             head,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `head: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:490:13
[INFO] [stderr]     |
[INFO] [stderr] 490 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tail`
[INFO] [stderr]    --> src/backend/types.rs:489:13
[INFO] [stderr]     |
[INFO] [stderr] 489 |             tail,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `tail: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `base`
[INFO] [stderr]    --> src/backend/types.rs:497:13
[INFO] [stderr]     |
[INFO] [stderr] 497 |             base,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `base: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:496:13
[INFO] [stderr]     |
[INFO] [stderr] 496 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `props`
[INFO] [stderr]    --> src/backend/types.rs:498:13
[INFO] [stderr]     |
[INFO] [stderr] 498 |             props,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `props: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:499:13
[INFO] [stderr]     |
[INFO] [stderr] 499 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/backend/types.rs:506:13
[INFO] [stderr]     |
[INFO] [stderr] 506 |             args,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `args: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:505:13
[INFO] [stderr]     |
[INFO] [stderr] 505 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:507:13
[INFO] [stderr]     |
[INFO] [stderr] 507 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[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: `infer_module`
[INFO] [stderr]   --> src/backend/types.rs:37:1
[INFO] [stderr]    |
[INFO] [stderr] 37 | 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:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | 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:52:1
[INFO] [stderr]    |
[INFO] [stderr] 52 | 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:117:1
[INFO] [stderr]     |
[INFO] [stderr] 117 | 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:134:1
[INFO] [stderr]     |
[INFO] [stderr] 134 | fn infer_expr(expr: UntypedExpr, ctx: &mut Context) -> Expr<Type> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `unit`
[INFO] [stderr]    --> src/backend/types.rs:322:1
[INFO] [stderr]     |
[INFO] [stderr] 322 | fn unit() -> Type {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `int`
[INFO] [stderr]    --> src/backend/types.rs:329:1
[INFO] [stderr]     |
[INFO] [stderr] 329 | fn int() -> Type {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `float`
[INFO] [stderr]    --> src/backend/types.rs:336:1
[INFO] [stderr]     |
[INFO] [stderr] 336 | fn float() -> Type {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `string`
[INFO] [stderr]    --> src/backend/types.rs:343:1
[INFO] [stderr]     |
[INFO] [stderr] 343 | fn string() -> Type {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `list`
[INFO] [stderr]    --> src/backend/types.rs:350:1
[INFO] [stderr]     |
[INFO] [stderr] 350 | fn list(inner: Type) -> Type {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `tuple`
[INFO] [stderr]    --> src/backend/types.rs:358:1
[INFO] [stderr]     |
[INFO] [stderr] 358 | fn tuple(args: Vec<Type>) -> Type {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `from_annotation`
[INFO] [stderr]    --> src/backend/types.rs:364:1
[INFO] [stderr]     |
[INFO] [stderr] 364 | fn from_annotation(annotation: ast::Type) -> Type {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `from_pattern`
[INFO] [stderr]    --> src/backend/types.rs:438:1
[INFO] [stderr]     |
[INFO] [stderr] 438 | fn from_pattern(patt: ast::Patt) -> Type {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Expr`
[INFO] [stderr]  --> src/frontend/ast.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Expr(Expr<T>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `span`
[INFO] [stderr]   --> src/frontend/ast.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn span(&self) -> Span {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ty`
[INFO] [stderr]   --> src/frontend/ast.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn ty(&self) -> Option<&T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ty`
[INFO] [stderr]    --> src/frontend/ast.rs:220:5
[INFO] [stderr]     |
[INFO] [stderr] 220 |     pub fn ty(&self) -> &T {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `span`
[INFO] [stderr]    --> src/frontend/ast.rs:359:5
[INFO] [stderr]     |
[INFO] [stderr] 359 |     pub fn span(&self) -> Span {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `parse_single_expr`
[INFO] [stderr]   --> src/frontend/parser.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     pub fn parse_single_expr(mut self) -> Result<UntypedExpr, Diagnostics<'a, SyntaxError>> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.50s
[INFO] running `"docker" "inspect" "7ed0c60482687f90da7bef2668d9347af8f2c04c78ca94543167f013713afc09"`
[INFO] running `"docker" "rm" "-f" "7ed0c60482687f90da7bef2668d9347af8f2c04c78ca94543167f013713afc09"`
[INFO] [stdout] 7ed0c60482687f90da7bef2668d9347af8f2c04c78ca94543167f013713afc09
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/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=warn" "-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" "+1.38.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 6f3f1892268c665e498bceba20872c169820b8622cb4418156eb3b3492f94aa0
[INFO] running `"docker" "start" "-a" "6f3f1892268c665e498bceba20872c169820b8622cb4418156eb3b3492f94aa0"`
[INFO] [stderr]    Compiling gris-lang v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused import: `Node`
[INFO] [stderr]     --> src/frontend/parser.rs:1176:25
[INFO] [stderr]      |
[INFO] [stderr] 1176 |     use super::{Parser, Node, Source, span};
[INFO] [stderr]      |                         ^^^^
[INFO] [stderr]      |
[INFO] [stderr]      = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:164:13
[INFO] [stderr]     |
[INFO] [stderr] 164 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `opr`
[INFO] [stderr]    --> src/backend/types.rs:197:13
[INFO] [stderr]     |
[INFO] [stderr] 197 |             opr,
[INFO] [stderr]     |             ^^^ help: try ignoring the field: `opr: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `lhs`
[INFO] [stderr]    --> src/backend/types.rs:202:17
[INFO] [stderr]     |
[INFO] [stderr] 202 |             let lhs = infer_expr(*lhs, ctx);
[INFO] [stderr]     |                 ^^^ help: consider prefixing with an underscore: `_lhs`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rhs`
[INFO] [stderr]    --> src/backend/types.rs:203:17
[INFO] [stderr]     |
[INFO] [stderr] 203 |             let rhs = infer_expr(*rhs, ctx);
[INFO] [stderr]     |                 ^^^ help: consider prefixing with an underscore: `_rhs`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `opr`
[INFO] [stderr]    --> src/backend/types.rs:208:13
[INFO] [stderr]     |
[INFO] [stderr] 208 |             opr,
[INFO] [stderr]     |             ^^^ help: try ignoring the field: `opr: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `rhs`
[INFO] [stderr]    --> src/backend/types.rs:212:17
[INFO] [stderr]     |
[INFO] [stderr] 212 |             let rhs = infer_expr(*rhs, ctx);
[INFO] [stderr]     |                 ^^^ help: consider prefixing with an underscore: `_rhs`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `func`
[INFO] [stderr]    --> src/backend/types.rs:234:17
[INFO] [stderr]     |
[INFO] [stderr] 234 |             let func = infer_expr(*func, ctx);
[INFO] [stderr]     |                 ^^^^ help: consider prefixing with an underscore: `_func`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/backend/types.rs:235:17
[INFO] [stderr]     |
[INFO] [stderr] 235 |             let args = args.into_iter().map(|arg| infer_expr(arg, ctx)).collect::<Vec<ast::Expr<Type>>>();
[INFO] [stderr]     |                 ^^^^ help: consider prefixing with an underscore: `_args`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `main`
[INFO] [stderr]    --> src/backend/types.rs:240:13
[INFO] [stderr]     |
[INFO] [stderr] 240 |             main,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `main: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:241:13
[INFO] [stderr]     |
[INFO] [stderr] 241 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `head`
[INFO] [stderr]    --> src/backend/types.rs:270:13
[INFO] [stderr]     |
[INFO] [stderr] 270 |             head,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `head: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tail`
[INFO] [stderr]    --> src/backend/types.rs:271:13
[INFO] [stderr]     |
[INFO] [stderr] 271 |             tail,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `tail: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `base`
[INFO] [stderr]    --> src/backend/types.rs:279:13
[INFO] [stderr]     |
[INFO] [stderr] 279 |             base,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `base: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:278:13
[INFO] [stderr]     |
[INFO] [stderr] 278 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `props`
[INFO] [stderr]    --> src/backend/types.rs:280:13
[INFO] [stderr]     |
[INFO] [stderr] 280 |             props,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `props: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `otherwise`
[INFO] [stderr]    --> src/backend/types.rs:289:13
[INFO] [stderr]     |
[INFO] [stderr] 289 |             otherwise,
[INFO] [stderr]     |             ^^^^^^^^^ help: try ignoring the field: `otherwise: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `test`
[INFO] [stderr]    --> src/backend/types.rs:287:13
[INFO] [stderr]     |
[INFO] [stderr] 287 |             test,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `test: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `then`
[INFO] [stderr]    --> src/backend/types.rs:288:13
[INFO] [stderr]     |
[INFO] [stderr] 288 |             then,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `then: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `cases`
[INFO] [stderr]    --> src/backend/types.rs:297:13
[INFO] [stderr]     |
[INFO] [stderr] 297 |             cases,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `cases: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `expr`
[INFO] [stderr]    --> src/backend/types.rs:296:13
[INFO] [stderr]     |
[INFO] [stderr] 296 |             expr,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `expr: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `otherwise`
[INFO] [stderr]    --> src/backend/types.rs:298:13
[INFO] [stderr]     |
[INFO] [stderr] 298 |             otherwise,
[INFO] [stderr]     |             ^^^^^^^^^ help: try ignoring the field: `otherwise: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/backend/types.rs:305:13
[INFO] [stderr]     |
[INFO] [stderr] 305 |             args,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `args: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `body`
[INFO] [stderr]    --> src/backend/types.rs:306:13
[INFO] [stderr]     |
[INFO] [stderr] 306 |             body,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `body: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `curr`
[INFO] [stderr]    --> src/backend/types.rs:314:13
[INFO] [stderr]     |
[INFO] [stderr] 314 |             curr,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `curr: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `prev`
[INFO] [stderr]    --> src/backend/types.rs:313:13
[INFO] [stderr]     |
[INFO] [stderr] 313 |             prev,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `prev: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:375:13
[INFO] [stderr]     |
[INFO] [stderr] 375 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:382:13
[INFO] [stderr]     |
[INFO] [stderr] 382 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:391:13
[INFO] [stderr]     |
[INFO] [stderr] 391 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:404:13
[INFO] [stderr]     |
[INFO] [stderr] 404 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:416:13
[INFO] [stderr]     |
[INFO] [stderr] 416 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:423:13
[INFO] [stderr]     |
[INFO] [stderr] 423 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:430:13
[INFO] [stderr]     |
[INFO] [stderr] 430 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:441:13
[INFO] [stderr]     |
[INFO] [stderr] 441 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:448:13
[INFO] [stderr]     |
[INFO] [stderr] 448 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/backend/types.rs:447:13
[INFO] [stderr]     |
[INFO] [stderr] 447 |             value,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:455:13
[INFO] [stderr]     |
[INFO] [stderr] 455 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/backend/types.rs:454:13
[INFO] [stderr]     |
[INFO] [stderr] 454 |             value,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:462:13
[INFO] [stderr]     |
[INFO] [stderr] 462 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `value`
[INFO] [stderr]    --> src/backend/types.rs:461:13
[INFO] [stderr]     |
[INFO] [stderr] 461 |             value,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `value: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:468:13
[INFO] [stderr]     |
[INFO] [stderr] 468 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:469:13
[INFO] [stderr]     |
[INFO] [stderr] 469 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `elements`
[INFO] [stderr]    --> src/backend/types.rs:475:13
[INFO] [stderr]     |
[INFO] [stderr] 475 |             elements,
[INFO] [stderr]     |             ^^^^^^^^ help: try ignoring the field: `elements: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:476:13
[INFO] [stderr]     |
[INFO] [stderr] 476 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:482:13
[INFO] [stderr]     |
[INFO] [stderr] 482 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `head`
[INFO] [stderr]    --> src/backend/types.rs:488:13
[INFO] [stderr]     |
[INFO] [stderr] 488 |             head,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `head: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:490:13
[INFO] [stderr]     |
[INFO] [stderr] 490 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `tail`
[INFO] [stderr]    --> src/backend/types.rs:489:13
[INFO] [stderr]     |
[INFO] [stderr] 489 |             tail,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `tail: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `base`
[INFO] [stderr]    --> src/backend/types.rs:497:13
[INFO] [stderr]     |
[INFO] [stderr] 497 |             base,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `base: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:496:13
[INFO] [stderr]     |
[INFO] [stderr] 496 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `props`
[INFO] [stderr]    --> src/backend/types.rs:498:13
[INFO] [stderr]     |
[INFO] [stderr] 498 |             props,
[INFO] [stderr]     |             ^^^^^ help: try ignoring the field: `props: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:499:13
[INFO] [stderr]     |
[INFO] [stderr] 499 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `args`
[INFO] [stderr]    --> src/backend/types.rs:506:13
[INFO] [stderr]     |
[INFO] [stderr] 506 |             args,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `args: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `name`
[INFO] [stderr]    --> src/backend/types.rs:505:13
[INFO] [stderr]     |
[INFO] [stderr] 505 |             name,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `name: _`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `span`
[INFO] [stderr]    --> src/backend/types.rs:507:13
[INFO] [stderr]     |
[INFO] [stderr] 507 |             span,
[INFO] [stderr]     |             ^^^^ help: try ignoring the field: `span: _`
[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: `infer_module`
[INFO] [stderr]   --> src/backend/types.rs:37:1
[INFO] [stderr]    |
[INFO] [stderr] 37 | 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:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | 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:52:1
[INFO] [stderr]    |
[INFO] [stderr] 52 | 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:117:1
[INFO] [stderr]     |
[INFO] [stderr] 117 | 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:134:1
[INFO] [stderr]     |
[INFO] [stderr] 134 | fn infer_expr(expr: UntypedExpr, ctx: &mut Context) -> Expr<Type> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `unit`
[INFO] [stderr]    --> src/backend/types.rs:322:1
[INFO] [stderr]     |
[INFO] [stderr] 322 | fn unit() -> Type {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `int`
[INFO] [stderr]    --> src/backend/types.rs:329:1
[INFO] [stderr]     |
[INFO] [stderr] 329 | fn int() -> Type {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `float`
[INFO] [stderr]    --> src/backend/types.rs:336:1
[INFO] [stderr]     |
[INFO] [stderr] 336 | fn float() -> Type {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `string`
[INFO] [stderr]    --> src/backend/types.rs:343:1
[INFO] [stderr]     |
[INFO] [stderr] 343 | fn string() -> Type {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `list`
[INFO] [stderr]    --> src/backend/types.rs:350:1
[INFO] [stderr]     |
[INFO] [stderr] 350 | fn list(inner: Type) -> Type {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `tuple`
[INFO] [stderr]    --> src/backend/types.rs:358:1
[INFO] [stderr]     |
[INFO] [stderr] 358 | fn tuple(args: Vec<Type>) -> Type {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `from_annotation`
[INFO] [stderr]    --> src/backend/types.rs:364:1
[INFO] [stderr]     |
[INFO] [stderr] 364 | fn from_annotation(annotation: ast::Type) -> Type {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `from_pattern`
[INFO] [stderr]    --> src/backend/types.rs:438:1
[INFO] [stderr]     |
[INFO] [stderr] 438 | fn from_pattern(patt: ast::Patt) -> Type {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Expr`
[INFO] [stderr]  --> src/frontend/ast.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     Expr(Expr<T>),
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `span`
[INFO] [stderr]   --> src/frontend/ast.rs:60:5
[INFO] [stderr]    |
[INFO] [stderr] 60 |     pub fn span(&self) -> Span {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ty`
[INFO] [stderr]   --> src/frontend/ast.rs:68:5
[INFO] [stderr]    |
[INFO] [stderr] 68 |     pub fn ty(&self) -> Option<&T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `ty`
[INFO] [stderr]    --> src/frontend/ast.rs:220:5
[INFO] [stderr]     |
[INFO] [stderr] 220 |     pub fn ty(&self) -> &T {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `span`
[INFO] [stderr]    --> src/frontend/ast.rs:359:5
[INFO] [stderr]     |
[INFO] [stderr] 359 |     pub fn span(&self) -> Span {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/frontend/parser.rs:1355:9
[INFO] [stderr]      |
[INFO] [stderr] 1355 |         parse_single_expr(r#"{ { age: { 10 + 15 }, name: "John" } }"#);
[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/frontend/parser.rs:1360:9
[INFO] [stderr]      |
[INFO] [stderr] 1360 |         parse_single_expr("-5");
[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/frontend/parser.rs:1365:9
[INFO] [stderr]      |
[INFO] [stderr] 1365 |         parse_single_expr("1 + 2 * 3 / 4");
[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/frontend/parser.rs:1370:9
[INFO] [stderr]      |
[INFO] [stderr] 1370 |         parse_single_expr(r#"if x > y then print("x > y") else print("y >= x")"#);
[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/frontend/parser.rs:1375:9
[INFO] [stderr]      |
[INFO] [stderr] 1375 | /         parse_single_expr(r#"
[INFO] [stderr] 1376 | |             if x > y {
[INFO] [stderr] 1377 | |               print("x > y")
[INFO] [stderr] 1378 | |             }
[INFO] [stderr] ...    |
[INFO] [stderr] 1384 | |             }
[INFO] [stderr] 1385 | |         "#);
[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/frontend/parser.rs:1390:9
[INFO] [stderr]      |
[INFO] [stderr] 1390 |         parse_single_expr("let num = 5");
[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/frontend/parser.rs:1395:9
[INFO] [stderr]      |
[INFO] [stderr] 1395 |         parse_single_expr("let [x, y, z, w] = [1, 2, 3, 4]");
[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/frontend/parser.rs:1400:9
[INFO] [stderr]      |
[INFO] [stderr] 1400 |         parse_single_expr("let x :: xs = [1, 2, 3, 4, 5]");
[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/frontend/parser.rs:1405:9
[INFO] [stderr]      |
[INFO] [stderr] 1405 |         parse_single_expr("let x::y::xs = [1, 2, 3, 4, 5]");
[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/frontend/parser.rs:1410:9
[INFO] [stderr]      |
[INFO] [stderr] 1410 |         parse_single_expr("let (a, b) = (42, 3.14)");
[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/frontend/parser.rs:1415:9
[INFO] [stderr]      |
[INFO] [stderr] 1415 |         parse_single_expr("let { x, y } = { x: 42, y: 3.14 }");
[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/frontend/parser.rs:1420:9
[INFO] [stderr]      |
[INFO] [stderr] 1420 |         parse_single_expr("let point = { pt | x: 10 }");
[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/frontend/parser.rs:1425:9
[INFO] [stderr]      |
[INFO] [stderr] 1425 |         parse_single_expr("let Vector3(x, y, z) = vec");
[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/frontend/parser.rs:1430:9
[INFO] [stderr]      |
[INFO] [stderr] 1430 | /         parse_single_expr(r#"
[INFO] [stderr] 1431 | |             match n {
[INFO] [stderr] 1432 | |               case 1 -> print("One")
[INFO] [stderr] 1433 | |               case 2 -> print("Two")
[INFO] [stderr] 1434 | |               else print("Other number")
[INFO] [stderr] 1435 | |             }
[INFO] [stderr] 1436 | |         "#);
[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/frontend/parser.rs:1441:9
[INFO] [stderr]      |
[INFO] [stderr] 1441 | /         parse_single_expr(r#"
[INFO] [stderr] 1442 | |             match x {
[INFO] [stderr] 1443 | |               case 1
[INFO] [stderr] 1444 | |               case 2
[INFO] [stderr] ...    |
[INFO] [stderr] 1449 | |             }
[INFO] [stderr] 1450 | |         "#);
[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/frontend/parser.rs:1455:9
[INFO] [stderr]      |
[INFO] [stderr] 1455 |         parse_single_expr("print(1)");
[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/frontend/parser.rs:1460:9
[INFO] [stderr]      |
[INFO] [stderr] 1460 |         parse_single_expr("Pretty.print(list)");
[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/frontend/parser.rs:1465:9
[INFO] [stderr]      |
[INFO] [stderr] 1465 |         parse_single_expr(r#"split("a/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: unused `std::result::Result` that must be used
[INFO] [stderr]     --> src/frontend/parser.rs:1470:9
[INFO] [stderr]      |
[INFO] [stderr] 1470 |         parse_single_expr("curried(1)(2)(3)(4)");
[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/frontend/parser.rs:1475:9
[INFO] [stderr]      |
[INFO] [stderr] 1475 |         parse_single_expr("map(fn n -> n * n, 1..100)");
[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/frontend/parser.rs:1480:9
[INFO] [stderr]      |
[INFO] [stderr] 1480 |         parse("f(x: Int) -> Int { x * x }");
[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/frontend/parser.rs:1485:9
[INFO] [stderr]      |
[INFO] [stderr] 1485 |         parse("f(x, y: Int) -> Int { x * y }");
[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/frontend/parser.rs:1490:9
[INFO] [stderr]      |
[INFO] [stderr] 1490 | /         parse(r#"
[INFO] [stderr] 1491 | |             fizzbuzz(n: Int) -> String {
[INFO] [stderr] 1492 | |               match (n % 3, n % 5) {
[INFO] [stderr] 1493 | |                 case (0, 0) -> "FizzBuzz"
[INFO] [stderr] ...    |
[INFO] [stderr] 1498 | |             }
[INFO] [stderr] 1499 | |         "#);
[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/frontend/parser.rs:1504:9
[INFO] [stderr]      |
[INFO] [stderr] 1504 | /         parse(r#"
[INFO] [stderr] 1505 | |             add(a, b: Int) -> Int {
[INFO] [stderr] 1506 | |               x = a + b
[INFO] [stderr] 1507 | |               y = a - b
[INFO] [stderr] 1508 | |               x * y
[INFO] [stderr] 1509 | |             }
[INFO] [stderr] 1510 | |         "#);
[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/frontend/parser.rs:1515:9
[INFO] [stderr]      |
[INFO] [stderr] 1515 |         parse("|> (x: 'A, f: ('A) -> 'B) -> 'B { f(x) }");
[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/frontend/parser.rs:1520:9
[INFO] [stderr]      |
[INFO] [stderr] 1520 | /         parse(r#"
[INFO] [stderr] 1521 | |             type Point = {
[INFO] [stderr] 1522 | |               x: Int,
[INFO] [stderr] 1523 | |               y: Int,
[INFO] [stderr] 1524 | |             }
[INFO] [stderr] 1525 | |         "#);
[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/frontend/parser.rs:1530:9
[INFO] [stderr]      |
[INFO] [stderr] 1530 |         parse("type Tree('A) = Leaf('A) | Node(Tree('A), Tree('A))");
[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/frontend/parser.rs:1535:9
[INFO] [stderr]      |
[INFO] [stderr] 1535 | /         parse(r#"
[INFO] [stderr] 1536 | |             import List
[INFO] [stderr] 1537 | |             import Math
[INFO] [stderr] 1538 | |         "#);
[INFO] [stderr]      | |____________^
[INFO] [stderr]      |
[INFO] [stderr]      = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.79s
[INFO] running `"docker" "inspect" "6f3f1892268c665e498bceba20872c169820b8622cb4418156eb3b3492f94aa0"`
[INFO] running `"docker" "rm" "-f" "6f3f1892268c665e498bceba20872c169820b8622cb4418156eb3b3492f94aa0"`
[INFO] [stdout] 6f3f1892268c665e498bceba20872c169820b8622cb4418156eb3b3492f94aa0
[INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/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=warn" "-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" "+1.38.0" "test" "--frozen"`
[INFO] [stdout] f8f1e8e0cc1d9e715805f7b5cbc425c79dfd56d4009300aef1b0df539025eb78
[INFO] running `"docker" "start" "-a" "f8f1e8e0cc1d9e715805f7b5cbc425c79dfd56d4009300aef1b0df539025eb78"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/gris_lang-5e914f2af45151c1
[INFO] [stdout] 
[INFO] [stdout] running 46 tests
[INFO] [stdout] test frontend::lexer::tests::test_comment ... ok
[INFO] [stdout] test frontend::lexer::tests::test_colon ... ok
[INFO] [stdout] test frontend::lexer::tests::test_lookahead_sequence ... ok
[INFO] [stdout] test frontend::lexer::tests::test_identifier ... ok
[INFO] [stdout] test frontend::lexer::tests::test_op_with_colon ... ok
[INFO] [stdout] test frontend::lexer::tests::test_number ... ok
[INFO] [stdout] test frontend::lexer::tests::test_op_colon_colon ... ok
[INFO] [stdout] test frontend::lexer::tests::test_or_operator ... ok
[INFO] [stdout] test frontend::lexer::tests::test_pipe ... ok
[INFO] [stdout] test frontend::lexer::tests::test_operator ... ok
[INFO] [stdout] test frontend::lexer::tests::test_quote_identifiers ... ok
[INFO] [stdout] test frontend::lexer::tests::test_wildcard ... ok
[INFO] [stdout] test frontend::lexer::tests::test_string ... ok
[INFO] [stdout] test frontend::parser::tests::test_call ... ok
[INFO] [stdout] test frontend::parser::tests::test_anon_record ... ok
[INFO] [stdout] test frontend::parser::tests::test_binary ... ok
[INFO] [stdout] test frontend::parser::tests::test_constructor_pattern ... ok
[INFO] [stdout] test frontend::parser::tests::test_cons_pattern ... ok
[INFO] [stdout] test frontend::parser::tests::test_closures ... ok
[INFO] [stdout] test frontend::parser::tests::test_function_call ... ok
[INFO] [stdout] test frontend::parser::tests::test_expr_call ... ok
[INFO] [stdout] test frontend::parser::tests::test_function_multiple_parameters ... ok
[INFO] [stdout] test frontend::parser::tests::test_function_with_block_body ... ok
[INFO] [stdout] test frontend::parser::tests::test_import ... ok
[INFO] [stdout] test frontend::parser::tests::test_let ... ok
[INFO] [stdout] test frontend::parser::tests::test_literals ... ok
[INFO] [stdout] test frontend::parser::tests::test_complex_function ... ok
[INFO] [stdout] test frontend::parser::tests::test_list_pattern ... ok
[INFO] [stdout] test frontend::parser::tests::test_if ... ok
[INFO] [stdout] test frontend::parser::tests::test_list ... ok
[INFO] [stdout] test frontend::parser::tests::test_module_function_call ... ok
[INFO] [stdout] test frontend::parser::tests::test_if_braces ... ok
[INFO] [stdout] test frontend::parser::tests::test_named_record ... ok
[INFO] [stdout] test frontend::parser::tests::test_record ... ok
[INFO] [stdout] test frontend::parser::tests::test_long_cons_pattern ... ok
[INFO] [stdout] test frontend::parser::tests::test_match ... ok
[INFO] [stdout] test frontend::parser::tests::test_match_with_multiple_cases ... ok
[INFO] [stdout] test frontend::parser::tests::test_operator ... ok
[INFO] [stdout] test frontend::parser::tests::test_unary ... ok
[INFO] [stdout] test frontend::parser::tests::test_tuple ... ok
[INFO] [stdout] test frontend::parser::tests::test_tuple_pattern ... ok
[INFO] [stdout] test frontend::parser::tests::test_simple_function ... ok
[INFO] [stdout] test frontend::parser::tests::test_record_update ... ok
[INFO] [stdout] test frontend::parser::tests::test_record_pattern ... ok
[INFO] [stdout] test frontend::parser::tests::test_nested_record_and_block ... ok
[INFO] [stdout] test frontend::parser::tests::test_variants ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 46 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "f8f1e8e0cc1d9e715805f7b5cbc425c79dfd56d4009300aef1b0df539025eb78"`
[INFO] running `"docker" "rm" "-f" "f8f1e8e0cc1d9e715805f7b5cbc425c79dfd56d4009300aef1b0df539025eb78"`
[INFO] [stdout] f8f1e8e0cc1d9e715805f7b5cbc425c79dfd56d4009300aef1b0df539025eb78