[INFO] cloning repository https://github.com/Benricheson101/teeny [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Benricheson101/teeny" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenricheson101%2Fteeny", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenricheson101%2Fteeny'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] c22891e6b41fb16e6cf1c0e9beb65981eedef728 [INFO] linting Benricheson101/teeny against nightly for clippy-nonminimal_bool-denied [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenricheson101%2Fteeny" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/Benricheson101/teeny [INFO] finished tweaking git repo https://github.com/Benricheson101/teeny [INFO] tweaked toml for git repo https://github.com/Benricheson101/teeny written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/Benricheson101/teeny on toolchain nightly [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/Benricheson101/teeny already has a lockfile, it will not be regenerated [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+nightly" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Downloading crates ... [INFO] [stderr] Downloaded supports-hyperlinks v3.2.0 [INFO] [stderr] Downloaded owo-colors v4.2.3 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 7bb387d10c01b37ec4698cf9acc7cdc67a30105f060f83a461e2c39f7f899e42 [INFO] running `Command { std: "docker" "start" "-a" "7bb387d10c01b37ec4698cf9acc7cdc67a30105f060f83a461e2c39f7f899e42", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7bb387d10c01b37ec4698cf9acc7cdc67a30105f060f83a461e2c39f7f899e42", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7bb387d10c01b37ec4698cf9acc7cdc67a30105f060f83a461e2c39f7f899e42", kill_on_drop: false }` [INFO] [stdout] 7bb387d10c01b37ec4698cf9acc7cdc67a30105f060f83a461e2c39f7f899e42 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+nightly" "clippy" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] d822fd060e4a02fef485ac4d1b0dd8bed00aaff6c58f3726a66edb28e4321563 [INFO] running `Command { std: "docker" "start" "-a" "d822fd060e4a02fef485ac4d1b0dd8bed00aaff6c58f3726a66edb28e4321563", kill_on_drop: false }` [INFO] [stderr] Compiling object v0.37.3 [INFO] [stderr] Compiling rustix v1.1.3 [INFO] [stderr] Checking memchr v2.8.0 [INFO] [stderr] Checking gimli v0.32.3 [INFO] [stderr] Checking rustc-demangle v0.1.27 [INFO] [stderr] Compiling owo-colors v4.2.3 [INFO] [stderr] Checking unicode-linebreak v0.1.5 [INFO] [stderr] Checking is_ci v1.2.0 [INFO] [stderr] Compiling libc v0.2.180 [INFO] [stderr] Checking miniz_oxide v0.8.9 [INFO] [stderr] Checking supports-hyperlinks v3.2.0 [INFO] [stderr] Checking supports-unicode v3.0.0 [INFO] [stderr] Compiling syn v2.0.114 [INFO] [stderr] Checking supports-color v3.0.2 [INFO] [stderr] Checking textwrap v0.16.2 [INFO] [stderr] Checking terminal_size v0.4.3 [INFO] [stderr] Compiling miette-derive v7.6.0 [INFO] [stderr] Checking addr2line v0.25.1 [INFO] [stderr] Checking backtrace v0.3.76 [INFO] [stderr] Checking backtrace-ext v0.2.1 [INFO] [stderr] Checking miette v7.6.0 [INFO] [stderr] Checking teenyc v0.1.0 (/opt/rustwide/workdir) [INFO] [stdout] warning: unused import: `miette::NamedSource` [INFO] [stdout] --> src/error.rs:77:21 [INFO] [stdout] | [INFO] [stdout] 77 | use miette::NamedSource; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the `t @ _` pattern can be written as just `t` [INFO] [stdout] --> src/parser/mod.rs:222:13 [INFO] [stdout] | [INFO] [stdout] 222 | t @ _ => Err(ParseError { [INFO] [stdout] | ^^^^^ help: try: `t` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern [INFO] [stdout] = note: `#[warn(clippy::redundant_pattern)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: empty line after doc comment [INFO] [stdout] --> src/parser/mod.rs:295:5 [INFO] [stdout] | [INFO] [stdout] 295 | / /// `return = "return" [ expression ] ";" ;` [INFO] [stdout] 296 | | [INFO] [stdout] | |_^ [INFO] [stdout] 297 | fn parse_return(&mut self) -> ParseResult { [INFO] [stdout] | --------------- the comment documents this function [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#empty_line_after_doc_comments [INFO] [stdout] = note: `#[warn(clippy::empty_line_after_doc_comments)]` on by default [INFO] [stdout] = help: if the empty line is unintentional, remove it [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused import: `miette::NamedSource` [INFO] [stdout] --> src/error.rs:77:21 [INFO] [stdout] | [INFO] [stdout] 77 | use miette::NamedSource; [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^ [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the `t @ _` pattern can be written as just `t` [INFO] [stdout] --> src/parser/mod.rs:222:13 [INFO] [stdout] | [INFO] [stdout] 222 | t @ _ => Err(ParseError { [INFO] [stdout] | ^^^^^ help: try: `t` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern [INFO] [stdout] = note: `#[warn(clippy::redundant_pattern)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: empty line after doc comment [INFO] [stdout] --> src/parser/mod.rs:295:5 [INFO] [stdout] | [INFO] [stdout] 295 | / /// `return = "return" [ expression ] ";" ;` [INFO] [stdout] 296 | | [INFO] [stdout] | |_^ [INFO] [stdout] 297 | fn parse_return(&mut self) -> ParseResult { [INFO] [stdout] | --------------- the comment documents this function [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#empty_line_after_doc_comments [INFO] [stdout] = note: `#[warn(clippy::empty_line_after_doc_comments)]` on by default [INFO] [stdout] = help: if the empty line is unintentional, remove it [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `op` [INFO] [stdout] --> src/analysis/type_checker.rs:117:37 [INFO] [stdout] | [INFO] [stdout] 117 | ExprKind::Binary { lhs, op, rhs } => { [INFO] [stdout] | ^^ help: try ignoring the field: `op: _` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `object` [INFO] [stdout] --> src/analysis/type_checker.rs:228:38 [INFO] [stdout] | [INFO] [stdout] 228 | ExprKind::MemberAccess { object, name } => todo!(), [INFO] [stdout] | ^^^^^^ help: try ignoring the field: `object: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/analysis/type_checker.rs:228:46 [INFO] [stdout] | [INFO] [stdout] 228 | ExprKind::MemberAccess { object, name } => todo!(), [INFO] [stdout] | ^^^^ help: try ignoring the field: `name: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `target` [INFO] [stdout] --> src/analysis/type_checker.rs:230:38 [INFO] [stdout] | [INFO] [stdout] 230 | ExprKind::StaticAccess { target, member } => todo!(), [INFO] [stdout] | ^^^^^^ help: try ignoring the field: `target: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `member` [INFO] [stdout] --> src/analysis/type_checker.rs:230:46 [INFO] [stdout] | [INFO] [stdout] 230 | ExprKind::StaticAccess { target, member } => todo!(), [INFO] [stdout] | ^^^^^^ help: try ignoring the field: `member: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/analysis/type_checker.rs:232:36 [INFO] [stdout] | [INFO] [stdout] 232 | ExprKind::StructInit { name, fields } => todo!(), [INFO] [stdout] | ^^^^ help: try ignoring the field: `name: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `fields` [INFO] [stdout] --> src/analysis/type_checker.rs:232:42 [INFO] [stdout] | [INFO] [stdout] 232 | ExprKind::StructInit { name, fields } => todo!(), [INFO] [stdout] | ^^^^^^ help: try ignoring the field: `fields: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `op` [INFO] [stdout] --> src/analysis/type_checker.rs:117:37 [INFO] [stdout] | [INFO] [stdout] 117 | ExprKind::Binary { lhs, op, rhs } => { [INFO] [stdout] | ^^ help: try ignoring the field: `op: _` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `object` [INFO] [stdout] --> src/analysis/type_checker.rs:228:38 [INFO] [stdout] | [INFO] [stdout] 228 | ExprKind::MemberAccess { object, name } => todo!(), [INFO] [stdout] | ^^^^^^ help: try ignoring the field: `object: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/analysis/type_checker.rs:228:46 [INFO] [stdout] | [INFO] [stdout] 228 | ExprKind::MemberAccess { object, name } => todo!(), [INFO] [stdout] | ^^^^ help: try ignoring the field: `name: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `target` [INFO] [stdout] --> src/analysis/type_checker.rs:230:38 [INFO] [stdout] | [INFO] [stdout] 230 | ExprKind::StaticAccess { target, member } => todo!(), [INFO] [stdout] | ^^^^^^ help: try ignoring the field: `target: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `member` [INFO] [stdout] --> src/analysis/type_checker.rs:230:46 [INFO] [stdout] | [INFO] [stdout] 230 | ExprKind::StaticAccess { target, member } => todo!(), [INFO] [stdout] | ^^^^^^ help: try ignoring the field: `member: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `name` [INFO] [stdout] --> src/analysis/type_checker.rs:232:36 [INFO] [stdout] | [INFO] [stdout] 232 | ExprKind::StructInit { name, fields } => todo!(), [INFO] [stdout] | ^^^^ help: try ignoring the field: `name: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `fields` [INFO] [stdout] --> src/analysis/type_checker.rs:232:42 [INFO] [stdout] | [INFO] [stdout] 232 | ExprKind::StructInit { name, fields } => todo!(), [INFO] [stdout] | ^^^^^^ help: try ignoring the field: `fields: _` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `expr` [INFO] [stdout] --> src/main.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let expr = r" [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_expr` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: you should consider adding a `Default` implementation for `SymbolResolver` [INFO] [stdout] --> src/analysis/symbol.rs:41:5 [INFO] [stdout] | [INFO] [stdout] 41 | / pub fn new() -> Self { [INFO] [stdout] 42 | | Self { [INFO] [stdout] 43 | | scopes: vec![Scope::new()], [INFO] [stdout] 44 | | errors: vec![], [INFO] [stdout] ... | [INFO] [stdout] 47 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default [INFO] [stdout] = note: `#[warn(clippy::new_without_default)]` on by default [INFO] [stdout] help: try adding this [INFO] [stdout] | [INFO] [stdout] 40 + impl Default for SymbolResolver { [INFO] [stdout] 41 + fn default() -> Self { [INFO] [stdout] 42 + Self::new() [INFO] [stdout] 43 + } [INFO] [stdout] 44 + } [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: redundant pattern matching, consider using `is_none()` [INFO] [stdout] --> src/analysis/symbol.rs:205:16 [INFO] [stdout] | [INFO] [stdout] 205 | if let None = self.lookup(ident) { [INFO] [stdout] | -------^^^^--------------------- help: try: `if self.lookup(ident).is_none()` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching [INFO] [stdout] = note: `#[warn(clippy::redundant_pattern_matching)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `clone` on type `Span` which implements the `Copy` trait [INFO] [stdout] --> src/analysis/symbol.rs:208:23 [INFO] [stdout] | [INFO] [stdout] 208 | span: span.clone(), [INFO] [stdout] | ^^^^^^^^^^^^ help: try removing the `clone` call: `span` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy [INFO] [stdout] = note: `#[warn(clippy::clone_on_copy)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the `Err`-variant returned from this function is very large [INFO] [stdout] --> src/analysis/type_checker.rs:56:42 [INFO] [stdout] | [INFO] [stdout] 56 | fn infer_type(&self, expr: &Expr) -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the `Err`-variant is at least 128 bytes [INFO] [stdout] | [INFO] [stdout] = help: try reducing the size of `error::TeenyCompilerError`, for example by boxing large elements or replacing it with `Box` [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#result_large_err [INFO] [stdout] = note: `#[warn(clippy::result_large_err)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary closure used to substitute value for `Option::None` [INFO] [stdout] --> src/analysis/type_checker.rs:60:38 [INFO] [stdout] | [INFO] [stdout] 60 | ExprKind::Ident(name) => self [INFO] [stdout] | ______________________________________^ [INFO] [stdout] 61 | | .lookup(name) [INFO] [stdout] 62 | | .cloned() [INFO] [stdout] 63 | | .or_else(|| { [INFO] [stdout] ... | [INFO] [stdout] 78 | | kind: TeenyCompilerErrorKind::CannotInferType, [INFO] [stdout] 79 | | })?, [INFO] [stdout] | |__________________^ [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_lazy_evaluations [INFO] [stdout] = note: `#[warn(clippy::unnecessary_lazy_evaluations)]` on by default [INFO] [stdout] help: use `ok_or` instead [INFO] [stdout] | [INFO] [stdout] 76 ~ .ok_or(TeenyCompilerError { [INFO] [stdout] 77 + span: expr.span, [INFO] [stdout] 78 + kind: TeenyCompilerErrorKind::CannotInferType, [INFO] [stdout] 79 ~ })?, [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this boolean expression can be simplified [INFO] [stdout] --> src/analysis/type_checker.rs:310:30 [INFO] [stdout] | [INFO] [stdout] 310 | if expr.is_none() && !self.current_fn_return_ty.is_none() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.current_fn_return_ty.is_some()` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool [INFO] [stdout] = note: `#[warn(clippy::nonminimal_bool)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unused variable: `expr` [INFO] [stdout] --> src/main.rs:16:9 [INFO] [stdout] | [INFO] [stdout] 16 | let expr = r" [INFO] [stdout] | ^^^^ help: if this is intentional, prefix it with an underscore: `_expr` [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: you should consider adding a `Default` implementation for `SymbolResolver` [INFO] [stdout] --> src/analysis/symbol.rs:41:5 [INFO] [stdout] | [INFO] [stdout] 41 | / pub fn new() -> Self { [INFO] [stdout] 42 | | Self { [INFO] [stdout] 43 | | scopes: vec![Scope::new()], [INFO] [stdout] 44 | | errors: vec![], [INFO] [stdout] ... | [INFO] [stdout] 47 | | } [INFO] [stdout] | |_____^ [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#new_without_default [INFO] [stdout] = note: `#[warn(clippy::new_without_default)]` on by default [INFO] [stdout] help: try adding this [INFO] [stdout] | [INFO] [stdout] 40 + impl Default for SymbolResolver { [INFO] [stdout] 41 + fn default() -> Self { [INFO] [stdout] 42 + Self::new() [INFO] [stdout] 43 + } [INFO] [stdout] 44 + } [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: redundant pattern matching, consider using `is_none()` [INFO] [stdout] --> src/analysis/symbol.rs:205:16 [INFO] [stdout] | [INFO] [stdout] 205 | if let None = self.lookup(ident) { [INFO] [stdout] | -------^^^^--------------------- help: try: `if self.lookup(ident).is_none()` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_pattern_matching [INFO] [stdout] = note: `#[warn(clippy::redundant_pattern_matching)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: using `clone` on type `Span` which implements the `Copy` trait [INFO] [stdout] --> src/analysis/symbol.rs:208:23 [INFO] [stdout] | [INFO] [stdout] 208 | span: span.clone(), [INFO] [stdout] | ^^^^^^^^^^^^ help: try removing the `clone` call: `span` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#clone_on_copy [INFO] [stdout] = note: `#[warn(clippy::clone_on_copy)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: the `Err`-variant returned from this function is very large [INFO] [stdout] --> src/analysis/type_checker.rs:56:42 [INFO] [stdout] | [INFO] [stdout] 56 | fn infer_type(&self, expr: &Expr) -> Result { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the `Err`-variant is at least 128 bytes [INFO] [stdout] | [INFO] [stdout] = help: try reducing the size of `error::TeenyCompilerError`, for example by boxing large elements or replacing it with `Box` [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#result_large_err [INFO] [stdout] = note: `#[warn(clippy::result_large_err)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: unnecessary closure used to substitute value for `Option::None` [INFO] [stdout] --> src/analysis/type_checker.rs:60:38 [INFO] [stdout] | [INFO] [stdout] 60 | ExprKind::Ident(name) => self [INFO] [stdout] | ______________________________________^ [INFO] [stdout] 61 | | .lookup(name) [INFO] [stdout] 62 | | .cloned() [INFO] [stdout] 63 | | .or_else(|| { [INFO] [stdout] ... | [INFO] [stdout] 78 | | kind: TeenyCompilerErrorKind::CannotInferType, [INFO] [stdout] 79 | | })?, [INFO] [stdout] | |__________________^ [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_lazy_evaluations [INFO] [stdout] = note: `#[warn(clippy::unnecessary_lazy_evaluations)]` on by default [INFO] [stdout] help: use `ok_or` instead [INFO] [stdout] | [INFO] [stdout] 76 ~ .ok_or(TeenyCompilerError { [INFO] [stdout] 77 + span: expr.span, [INFO] [stdout] 78 + kind: TeenyCompilerErrorKind::CannotInferType, [INFO] [stdout] 79 ~ })?, [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: this boolean expression can be simplified [INFO] [stdout] --> src/analysis/type_checker.rs:310:30 [INFO] [stdout] | [INFO] [stdout] 310 | if expr.is_none() && !self.current_fn_return_ty.is_none() { [INFO] [stdout] | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try: `self.current_fn_return_ty.is_some()` [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#nonminimal_bool [INFO] [stdout] = note: `#[warn(clippy::nonminimal_bool)]` on by default [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] warning: useless use of `vec!` [INFO] [stdout] --> src/lexer/mod.rs:276:24 [INFO] [stdout] | [INFO] [stdout] 276 | let expected = vec![ [INFO] [stdout] | ________________________^ [INFO] [stdout] 277 | | Token { [INFO] [stdout] 278 | | kind: TokenKind::Integer(100), [INFO] [stdout] 279 | | line: 1, [INFO] [stdout] ... | [INFO] [stdout] 304 | | }, [INFO] [stdout] 305 | | ]; [INFO] [stdout] | |_________^ [INFO] [stdout] | [INFO] [stdout] = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_vec [INFO] [stdout] = note: `#[warn(clippy::useless_vec)]` on by default [INFO] [stdout] help: you can use an array directly [INFO] [stdout] | [INFO] [stdout] 276 ~ let expected = [Token { [INFO] [stdout] 277 + kind: TokenKind::Integer(100), [INFO] [stdout] 278 + line: 1, [INFO] [stdout] 279 + col: 1, [INFO] [stdout] 280 + start: 0, [INFO] [stdout] 281 + end: 3, [INFO] [stdout] 282 + }, [INFO] [stdout] 283 + Token { [INFO] [stdout] 284 + kind: TokenKind::Plus, [INFO] [stdout] 285 + line: 1, [INFO] [stdout] 286 + col: 5, [INFO] [stdout] 287 + start: 4, [INFO] [stdout] 288 + end: 5, [INFO] [stdout] 289 + }, [INFO] [stdout] 290 + Token { [INFO] [stdout] 291 + kind: TokenKind::Integer(200), [INFO] [stdout] 292 + line: 1, [INFO] [stdout] 293 + col: 7, [INFO] [stdout] 294 + start: 6, [INFO] [stdout] 295 + end: 9, [INFO] [stdout] 296 + }, [INFO] [stdout] 297 + Token { [INFO] [stdout] 298 + kind: TokenKind::Eof, [INFO] [stdout] 299 + line: 1, [INFO] [stdout] 300 + col: 10, [INFO] [stdout] 301 + start: 9, [INFO] [stdout] 302 + end: 9, [INFO] [stdout] 303 ~ }]; [INFO] [stdout] | [INFO] [stdout] [INFO] [stdout] [INFO] [stderr] Finished `dev` profile [unoptimized + debuginfo] target(s) in 8.59s [INFO] running `Command { std: "docker" "inspect" "d822fd060e4a02fef485ac4d1b0dd8bed00aaff6c58f3726a66edb28e4321563", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d822fd060e4a02fef485ac4d1b0dd8bed00aaff6c58f3726a66edb28e4321563", kill_on_drop: false }` [INFO] [stdout] d822fd060e4a02fef485ac4d1b0dd8bed00aaff6c58f3726a66edb28e4321563