AnnotationType::Error
}
Level::Warning => AnnotationType::Warning,
- Level::Note => AnnotationType::Note,
+ Level::Note | Level::OnceNote => AnnotationType::Note,
Level::Help => AnnotationType::Help,
// FIXME(#59346): Not sure how to map this level
Level::FailureNote => AnnotationType::Error,
| Level::Error { .. }
| Level::FailureNote => true,
- Level::Warning | Level::Note | Level::Help | Level::Allow | Level::Expect(_) => false,
+ Level::Warning
+ | Level::Note
+ | Level::OnceNote
+ | Level::Help
+ | Level::Allow
+ | Level::Expect(_) => false,
}
}
self
}
+ /// Prints the span with a note above it.
+ /// This is like [`Diagnostic::note()`], but it gets its own span.
+ pub fn note_once(&mut self, msg: &str) -> &mut Self {
+ self.sub(Level::OnceNote, msg, MultiSpan::new(), None);
+ self
+ }
+
/// Prints the span with a note above it.
/// This is like [`Diagnostic::note()`], but it gets its own span.
pub fn span_note<S: Into<MultiSpan>>(&mut self, sp: S, msg: &str) -> &mut Self {
self
}
+ /// Prints the span with a note above it.
+ /// This is like [`Diagnostic::note()`], but it gets its own span.
+ pub fn span_note_once<S: Into<MultiSpan>>(&mut self, sp: S, msg: &str) -> &mut Self {
+ self.sub(Level::OnceNote, msg, sp.into(), None);
+ self
+ }
+
/// Add a warning attached to this diagnostic.
pub fn warn(&mut self, msg: &str) -> &mut Self {
self.sub(Level::Warning, msg, MultiSpan::new(), None);
) -> &mut Self);
forward!(pub fn note(&mut self, msg: &str) -> &mut Self);
+ forward!(pub fn note_once(&mut self, msg: &str) -> &mut Self);
forward!(pub fn span_note(
&mut self,
sp: impl Into<MultiSpan>,
msg: &str,
) -> &mut Self);
+ forward!(pub fn span_note_once(
+ &mut self,
+ sp: impl Into<MultiSpan>,
+ msg: &str,
+ ) -> &mut Self);
forward!(pub fn warn(&mut self, msg: &str) -> &mut Self);
forward!(pub fn span_warn(&mut self, sp: impl Into<MultiSpan>, msg: &str) -> &mut Self);
forward!(pub fn help(&mut self, msg: &str) -> &mut Self);
#![doc(html_root_url = "https://doc.rust-lang.org/nightly/nightly-rustc/")]
#![feature(crate_visibility_modifier)]
+#![feature(drain_filter)]
#![feature(backtrace)]
#![feature(if_let_guard)]
#![feature(let_else)]
// Only emit the diagnostic if we've been asked to deduplicate and
// haven't already emitted an equivalent diagnostic.
if !(self.flags.deduplicate_diagnostics && already_emitted(self)) {
- self.emitter.emit_diagnostic(diagnostic);
+ debug!(?diagnostic);
+ debug!(?self.emitted_diagnostics);
+ let already_emitted_sub = |sub: &mut SubDiagnostic| {
+ debug!(?sub);
+ if sub.level != Level::OnceNote {
+ return false;
+ }
+ let mut hasher = StableHasher::new();
+ sub.hash(&mut hasher);
+ let diagnostic_hash = hasher.finish();
+ debug!(?diagnostic_hash);
+ !self.emitted_diagnostics.insert(diagnostic_hash)
+ };
+
+ diagnostic.children.drain_filter(already_emitted_sub).for_each(|_| {});
+
+ self.emitter.emit_diagnostic(&diagnostic);
if diagnostic.is_error() {
self.deduplicated_err_count += 1;
} else if diagnostic.level == Warning {
},
Warning,
Note,
+ /// A note that is only emitted once.
+ OnceNote,
Help,
FailureNote,
Allow,
Warning => {
spec.set_fg(Some(Color::Yellow)).set_intense(cfg!(windows));
}
- Note => {
+ Note | OnceNote => {
spec.set_fg(Some(Color::Green)).set_intense(true);
}
Help => {
Bug | DelayedBug => "error: internal compiler error",
Fatal | Error { .. } => "error",
Warning => "warning",
- Note => "note",
+ Note | OnceNote => "note",
Help => "help",
FailureNote => "failure-note",
Allow => panic!("Shouldn't call on allowed error"),
builtin::{self, FORBIDDEN_LINT_GROUPS},
FutureIncompatibilityReason, Level, Lint, LintExpectationId, LintId,
};
-use rustc_session::{DiagnosticMessageId, Session};
+use rustc_session::Session;
use rustc_span::hygiene::MacroKind;
use rustc_span::source_map::{DesugaringKind, ExpnKind, MultiSpan};
use rustc_span::{symbol, Span, Symbol, DUMMY_SP};
}
pub fn explain_lint_level_source(
- sess: &Session,
lint: &'static Lint,
level: Level,
src: LintLevelSource,
let name = lint.name_lower();
match src {
LintLevelSource::Default => {
- sess.diag_note_once(
- err,
- DiagnosticMessageId::from(lint),
- &format!("`#[{}({})]` on by default", level.as_str(), name),
- );
+ err.note_once(&format!("`#[{}({})]` on by default", level.as_str(), name));
}
LintLevelSource::CommandLine(lint_flag_val, orig_level) => {
let flag = match orig_level {
};
let hyphen_case_lint_name = name.replace('_', "-");
if lint_flag_val.as_str() == name {
- sess.diag_note_once(
- err,
- DiagnosticMessageId::from(lint),
- &format!(
- "requested on the command line with `{} {}`",
- flag, hyphen_case_lint_name
- ),
- );
+ err.note_once(&format!(
+ "requested on the command line with `{} {}`",
+ flag, hyphen_case_lint_name
+ ));
} else {
let hyphen_case_flag_val = lint_flag_val.as_str().replace('_', "-");
- sess.diag_note_once(
- err,
- DiagnosticMessageId::from(lint),
- &format!(
- "`{} {}` implied by `{} {}`",
- flag, hyphen_case_lint_name, flag, hyphen_case_flag_val
- ),
- );
+ err.note_once(&format!(
+ "`{} {}` implied by `{} {}`",
+ flag, hyphen_case_lint_name, flag, hyphen_case_flag_val
+ ));
}
}
LintLevelSource::Node(lint_attr_name, src, reason) => {
if let Some(rationale) = reason {
err.note(rationale.as_str());
}
- sess.diag_span_note_once(
- err,
- DiagnosticMessageId::from(lint),
- src,
- "the lint level is defined here",
- );
+ err.span_note_once(src, "the lint level is defined here");
if lint_attr_name.as_str() != name {
let level_str = level.as_str();
- sess.diag_note_once(
- err,
- DiagnosticMessageId::from(lint),
- &format!(
- "`#[{}({})]` implied by `#[{}({})]`",
- level_str, name, level_str, lint_attr_name
- ),
- );
+ err.note_once(&format!(
+ "`#[{}({})]` implied by `#[{}({})]`",
+ level_str, name, level_str, lint_attr_name
+ ));
}
}
}
return;
}
- explain_lint_level_source(sess, lint, level, src, &mut err);
+ explain_lint_level_source(lint, level, src, &mut err);
let name = lint.name_lower();
let is_force_warn = matches!(level, Level::ForceWarn);
use rustc_session::lint::builtin::{DEPRECATED, DEPRECATED_IN_FUTURE, SOFT_UNSTABLE};
use rustc_session::lint::{BuiltinLintDiagnostics, Level, Lint, LintBuffer};
use rustc_session::parse::feature_err_issue;
-use rustc_session::{DiagnosticMessageId, Session};
+use rustc_session::Session;
use rustc_span::symbol::{sym, Symbol};
-use rustc_span::{MultiSpan, Span};
+use rustc_span::Span;
use std::num::NonZeroU32;
#[derive(PartialEq, Clone, Copy, Debug)]
None => format!("use of unstable library feature '{}'", &feature),
};
- let msp: MultiSpan = span.into();
- let sm = &sess.parse_sess.source_map();
- let span_key = msp.primary_span().and_then(|sp: Span| {
- if !sp.is_dummy() {
- let file = sm.lookup_char_pos(sp.lo()).file;
- if file.is_imported() { None } else { Some(span) }
- } else {
- None
- }
- });
-
- let error_id = (DiagnosticMessageId::StabilityId(issue), span_key, msg.clone());
- let fresh = sess.one_time_diagnostics.borrow_mut().insert(error_id);
- if fresh {
- if is_soft {
- soft_handler(SOFT_UNSTABLE, span, &msg)
- } else {
- let mut err =
- feature_err_issue(&sess.parse_sess, feature, span, GateIssue::Library(issue), &msg);
- if let Some((inner_types, ref msg, sugg, applicability)) = suggestion {
- err.span_suggestion(inner_types, msg, sugg, applicability);
- }
- err.emit();
+ if is_soft {
+ soft_handler(SOFT_UNSTABLE, span, &msg)
+ } else {
+ let mut err =
+ feature_err_issue(&sess.parse_sess, feature, span, GateIssue::Library(issue), &msg);
+ if let Some((inner_types, ref msg, sugg, applicability)) = suggestion {
+ err.span_suggestion(inner_types, msg, sugg, applicability);
}
+ err.emit();
}
}
tcx.lint_level_at_node(UNSAFE_OP_IN_UNSAFE_FN, usage_lint_root);
assert_eq!(level, Level::Allow);
lint::explain_lint_level_source(
- tcx.sess,
UNSAFE_OP_IN_UNSAFE_FN,
Level::Allow,
source,
use rustc_errors::emitter::{Emitter, EmitterWriter, HumanReadableErrorType};
use rustc_errors::json::JsonEmitter;
use rustc_errors::registry::Registry;
-use rustc_errors::{Diagnostic, DiagnosticBuilder, DiagnosticId, ErrorGuaranteed};
+use rustc_errors::{DiagnosticBuilder, DiagnosticId, ErrorGuaranteed};
use rustc_macros::HashStable_Generic;
pub use rustc_span::def_id::StableCrateId;
use rustc_span::edition::Edition;
use std::env;
use std::fmt;
use std::io::Write;
-use std::num::NonZeroU32;
use std::ops::{Div, Mul};
use std::path::{Path, PathBuf};
use std::str::FromStr;
/// `None` means that there is no source file.
pub local_crate_source_file: Option<PathBuf>,
- /// Set of `(DiagnosticId, Option<Span>, message)` tuples tracking
- /// (sub)diagnostics that have been set once, but should not be set again,
- /// in order to avoid redundantly verbose output (Issue #24690, #44953).
- pub one_time_diagnostics: Lock<FxHashSet<(DiagnosticMessageId, Option<Span>, String)>>,
crate_types: OnceCell<Vec<CrateType>>,
/// The `stable_crate_id` is constructed out of the crate name and all the
/// `-C metadata` arguments passed to the compiler. Its value forms a unique
pub normalize_projection_ty: AtomicUsize,
}
-/// Enum to support dispatch of one-time diagnostics (in `Session.diag_once`).
-enum DiagnosticBuilderMethod {
- Note,
- SpanNote,
- // Add more variants as needed to support one-time diagnostics.
-}
-
/// Trait implemented by error types. This should not be implemented manually. Instead, use
/// `#[derive(SessionDiagnostic)]` -- see [rustc_macros::SessionDiagnostic].
pub trait SessionDiagnostic<'a> {
fn into_diagnostic(self, sess: &'a Session) -> DiagnosticBuilder<'a, ErrorGuaranteed>;
}
-/// Diagnostic message ID, used by `Session.one_time_diagnostics` to avoid
-/// emitting the same message more than once.
-#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]
-pub enum DiagnosticMessageId {
- ErrorId(u16), // EXXXX error code as integer
- LintId(lint::LintId),
- StabilityId(Option<NonZeroU32>), // issue number
-}
-
-impl From<&'static lint::Lint> for DiagnosticMessageId {
- fn from(lint: &'static lint::Lint) -> Self {
- DiagnosticMessageId::LintId(lint::LintId::of(lint))
- }
-}
-
impl Session {
pub fn miri_unleashed_feature(&self, span: Span, feature_gate: Option<Symbol>) {
self.miri_unleashed_features.lock().push((span, feature_gate));
&self.parse_sess.span_diagnostic
}
- /// Analogous to calling methods on the given `DiagnosticBuilder`, but
- /// deduplicates on lint ID, span (if any), and message for this `Session`
- fn diag_once(
- &self,
- diag: &mut Diagnostic,
- method: DiagnosticBuilderMethod,
- msg_id: DiagnosticMessageId,
- message: &str,
- span_maybe: Option<Span>,
- ) {
- let id_span_message = (msg_id, span_maybe, message.to_owned());
- let fresh = self.one_time_diagnostics.borrow_mut().insert(id_span_message);
- if fresh {
- match method {
- DiagnosticBuilderMethod::Note => {
- diag.note(message);
- }
- DiagnosticBuilderMethod::SpanNote => {
- let span = span_maybe.expect("`span_note` needs a span");
- diag.span_note(span, message);
- }
- }
- }
- }
-
- pub fn diag_span_note_once(
- &self,
- diag: &mut Diagnostic,
- msg_id: DiagnosticMessageId,
- span: Span,
- message: &str,
- ) {
- self.diag_once(diag, DiagnosticBuilderMethod::SpanNote, msg_id, message, Some(span));
- }
-
- pub fn diag_note_once(
- &self,
- diag: &mut Diagnostic,
- msg_id: DiagnosticMessageId,
- message: &str,
- ) {
- self.diag_once(diag, DiagnosticBuilderMethod::Note, msg_id, message, None);
- }
-
#[inline]
pub fn source_map(&self) -> &SourceMap {
self.parse_sess.source_map()
parse_sess,
sysroot,
local_crate_source_file,
- one_time_diagnostics: Default::default(),
crate_types: OnceCell::new(),
stable_crate_id: OnceCell::new(),
features: OnceCell::new(),
use rustc_infer::infer::InferCtxt;
use rustc_middle::ty::{self, TraitRef, Ty, TyCtxt};
use rustc_middle::ty::{ToPredicate, TypeFoldable};
-use rustc_session::{DiagnosticMessageId, Limit};
+use rustc_session::Limit;
use rustc_span::def_id::LOCAL_CRATE;
use rustc_span::Span;
Limit(0) => Limit(2),
limit => limit * 2,
};
- let msg = format!("reached the recursion limit while auto-dereferencing `{:?}`", ty);
- let error_id = (DiagnosticMessageId::ErrorId(55), Some(span), msg);
- let fresh = tcx.sess.one_time_diagnostics.borrow_mut().insert(error_id);
- if fresh {
- struct_span_err!(
- tcx.sess,
- span,
- E0055,
- "reached the recursion limit while auto-dereferencing `{:?}`",
- ty
- )
- .span_label(span, "deref recursion limit reached")
- .help(&format!(
- "consider increasing the recursion limit by adding a \
+ struct_span_err!(
+ tcx.sess,
+ span,
+ E0055,
+ "reached the recursion limit while auto-dereferencing `{:?}`",
+ ty
+ )
+ .span_label(span, "deref recursion limit reached")
+ .help(&format!(
+ "consider increasing the recursion limit by adding a \
`#![recursion_limit = \"{}\"]` attribute to your crate (`{}`)",
- suggested_limit,
- tcx.crate_name(LOCAL_CRATE),
- ))
- .emit();
- }
+ suggested_limit,
+ tcx.crate_name(LOCAL_CRATE),
+ ))
+ .emit();
}
use rustc_middle::ty::{
self, SubtypePredicate, ToPolyTraitRef, ToPredicate, Ty, TyCtxt, TypeFoldable,
};
-use rustc_session::DiagnosticMessageId;
use rustc_span::symbol::{kw, sym};
use rustc_span::{ExpnKind, MultiSpan, Span, DUMMY_SP};
use std::fmt;
}
}
- let msg = format!("type mismatch resolving `{}`", predicate);
- let error_id = (DiagnosticMessageId::ErrorId(271), Some(obligation.cause.span), msg);
- let fresh = self.tcx.sess.one_time_diagnostics.borrow_mut().insert(error_id);
- if fresh {
- let mut diag = struct_span_err!(
- self.tcx.sess,
- obligation.cause.span,
- E0271,
- "type mismatch resolving `{}`",
- predicate
- );
- let secondary_span = match predicate.kind().skip_binder() {
- ty::PredicateKind::Projection(proj) => self
- .tcx
- .opt_associated_item(proj.projection_ty.item_def_id)
- .and_then(|trait_assoc_item| {
+ let mut diag = struct_span_err!(
+ self.tcx.sess,
+ obligation.cause.span,
+ E0271,
+ "type mismatch resolving `{}`",
+ predicate
+ );
+ let secondary_span = match predicate.kind().skip_binder() {
+ ty::PredicateKind::Projection(proj) => self
+ .tcx
+ .opt_associated_item(proj.projection_ty.item_def_id)
+ .and_then(|trait_assoc_item| {
+ self.tcx
+ .trait_of_item(proj.projection_ty.item_def_id)
+ .map(|id| (trait_assoc_item, id))
+ })
+ .and_then(|(trait_assoc_item, id)| {
+ let trait_assoc_ident = trait_assoc_item.ident(self.tcx);
+ self.tcx.find_map_relevant_impl(id, proj.projection_ty.self_ty(), |did| {
self.tcx
- .trait_of_item(proj.projection_ty.item_def_id)
- .map(|id| (trait_assoc_item, id))
- })
- .and_then(|(trait_assoc_item, id)| {
- let trait_assoc_ident = trait_assoc_item.ident(self.tcx);
- self.tcx.find_map_relevant_impl(
- id,
- proj.projection_ty.self_ty(),
- |did| {
- self.tcx
- .associated_items(did)
- .in_definition_order()
- .find(|assoc| assoc.ident(self.tcx) == trait_assoc_ident)
- },
- )
+ .associated_items(did)
+ .in_definition_order()
+ .find(|assoc| assoc.ident(self.tcx) == trait_assoc_ident)
})
- .and_then(|item| match self.tcx.hir().get_if_local(item.def_id) {
- Some(
- hir::Node::TraitItem(hir::TraitItem {
- kind: hir::TraitItemKind::Type(_, Some(ty)),
- ..
- })
- | hir::Node::ImplItem(hir::ImplItem {
- kind: hir::ImplItemKind::TyAlias(ty),
- ..
- }),
- ) => {
- Some((ty.span, format!("type mismatch resolving `{}`", predicate)))
- }
- _ => None,
- }),
- _ => None,
- };
- self.note_type_err(&mut diag, &obligation.cause, secondary_span, values, err, true);
- self.note_obligation_cause(&mut diag, obligation);
- diag.emit();
- }
+ })
+ .and_then(|item| match self.tcx.hir().get_if_local(item.def_id) {
+ Some(
+ hir::Node::TraitItem(hir::TraitItem {
+ kind: hir::TraitItemKind::Type(_, Some(ty)),
+ ..
+ })
+ | hir::Node::ImplItem(hir::ImplItem {
+ kind: hir::ImplItemKind::TyAlias(ty),
+ ..
+ }),
+ ) => Some((ty.span, format!("type mismatch resolving `{}`", predicate))),
+ _ => None,
+ }),
+ _ => None,
+ };
+ self.note_type_err(&mut diag, &obligation.cause, secondary_span, values, err, true);
+ self.note_obligation_cause(&mut diag, obligation);
+ diag.emit();
});
}
// Test that the recursion limit can be changed. In this case, we have
// deeply nested types that will fail the `Send` check by overflow
// when the recursion limit is set very low.
+// compile-flags: -Zdeduplicate-diagnostics=yes
+
#![allow(dead_code)]
-#![recursion_limit="10"]
+#![recursion_limit = "10"]
macro_rules! link {
($outer:ident, $inner:ident) => {
struct $outer($inner);
&self.0
}
}
- }
+ };
}
+
struct Bottom;
+
impl Bottom {
fn new() -> Bottom {
Bottom
}
}
+
link!(Top, A);
link!(A, B);
link!(B, C);
link!(I, J);
link!(J, K);
link!(K, Bottom);
+
fn main() {
let t = Top::new();
let x: &Bottom = &t;
error[E0055]: reached the recursion limit while auto-dereferencing `J`
- --> $DIR/issue-38940.rs:43:22
+ --> $DIR/issue-38940.rs:49:22
|
LL | let x: &Bottom = &t;
| ^^ deref recursion limit reached
= help: consider increasing the recursion limit by adding a `#![recursion_limit = "20"]` attribute to your crate (`issue_38940`)
error[E0308]: mismatched types
- --> $DIR/issue-38940.rs:43:22
+ --> $DIR/issue-38940.rs:49:22
|
LL | let x: &Bottom = &t;
| ------- ^^ expected struct `Bottom`, found struct `Top`
LL | a += 1;
| ^
|
-note: the lint level is defined here
- --> $DIR/liveness.rs:5:9
- |
-LL | #![warn(unused)]
- | ^^^^^^
= note: `#[warn(unused_variables)]` implied by `#[warn(unused)]`
= help: did you mean to capture by reference instead?
LL | a = s;
| ^
|
-note: the lint level is defined here
- --> $DIR/liveness_unintentional_copy.rs:4:9
- |
-LL | #![warn(unused)]
- | ^^^^^^
= note: `#[warn(unused_variables)]` implied by `#[warn(unused)]`
= help: did you mean to capture by reference instead?
// Test that the recursion limit can be changed and that the compiler
// suggests a fix. In this case, we have a long chain of Deref impls
// which will cause an overflow during the autoderef loop.
+// compile-flags: -Zdeduplicate-diagnostics=yes
#![allow(dead_code)]
#![recursion_limit="10"]
error[E0055]: reached the recursion limit while auto-dereferencing `J`
- --> $DIR/recursion_limit_deref.rs:50:22
+ --> $DIR/recursion_limit_deref.rs:51:22
|
LL | let x: &Bottom = &t;
| ^^ deref recursion limit reached
= help: consider increasing the recursion limit by adding a `#![recursion_limit = "20"]` attribute to your crate (`recursion_limit_deref`)
error[E0308]: mismatched types
- --> $DIR/recursion_limit_deref.rs:50:22
+ --> $DIR/recursion_limit_deref.rs:51:22
|
LL | let x: &Bottom = &t;
| ------- ^^ expected struct `Bottom`, found struct `Top`
// error-pattern: reached the recursion limit while auto-dereferencing
-
-
+// compile-flags: -Zdeduplicate-diagnostics=yes
use std::ops::Deref;
error[E0308]: mismatched types
- --> $DIR/infinite-autoderef.rs:20:13
+ --> $DIR/infinite-autoderef.rs:19:13
|
LL | x = Box::new(x);
| ^^^^^^^^^^^ cyclic type of infinite size
| +
error[E0055]: reached the recursion limit while auto-dereferencing `Foo`
- --> $DIR/infinite-autoderef.rs:25:5
+ --> $DIR/infinite-autoderef.rs:24:5
|
LL | Foo.foo;
| ^^^^^^^ deref recursion limit reached
= help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`infinite_autoderef`)
error[E0055]: reached the recursion limit while auto-dereferencing `Foo`
- --> $DIR/infinite-autoderef.rs:25:9
+ --> $DIR/infinite-autoderef.rs:24:9
|
LL | Foo.foo;
| ^^^ deref recursion limit reached
= help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`infinite_autoderef`)
error[E0609]: no field `foo` on type `Foo`
- --> $DIR/infinite-autoderef.rs:25:9
+ --> $DIR/infinite-autoderef.rs:24:9
|
LL | Foo.foo;
| ^^^ unknown field
error[E0055]: reached the recursion limit while auto-dereferencing `Foo`
- --> $DIR/infinite-autoderef.rs:26:9
+ --> $DIR/infinite-autoderef.rs:25:9
|
LL | Foo.bar();
| ^^^ deref recursion limit reached
= help: consider increasing the recursion limit by adding a `#![recursion_limit = "256"]` attribute to your crate (`infinite_autoderef`)
error[E0599]: no method named `bar` found for struct `Foo` in the current scope
- --> $DIR/infinite-autoderef.rs:26:9
+ --> $DIR/infinite-autoderef.rs:25:9
|
LL | struct Foo;
| ----------- method `bar` not found for this
+// compile-flags: -Zdeduplicate-diagnostics=yes
+
use std::collections::HashMap;
fn main() {
for _ in HashMap::new().iter().cloned() {} //~ ERROR type mismatch
//~^ ERROR type mismatch
+ //~| ERROR type mismatch
}
error[E0271]: type mismatch resolving `<std::collections::hash_map::Iter<'_, _, _> as Iterator>::Item == &_`
- --> $DIR/issue-33941.rs:4:36
+ --> $DIR/issue-33941.rs:6:36
|
LL | for _ in HashMap::new().iter().cloned() {}
| ^^^^^^ expected reference, found tuple
| ^^^^^^^^^^^^ required by this bound in `cloned`
error[E0271]: type mismatch resolving `<std::collections::hash_map::Iter<'_, _, _> as Iterator>::Item == &_`
- --> $DIR/issue-33941.rs:4:14
+ --> $DIR/issue-33941.rs:6:14
|
LL | for _ in HashMap::new().iter().cloned() {}
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected tuple, found reference
= note: required because of the requirements on the impl of `Iterator` for `Cloned<std::collections::hash_map::Iter<'_, _, _>>`
= note: required because of the requirements on the impl of `IntoIterator` for `Cloned<std::collections::hash_map::Iter<'_, _, _>>`
-error: aborting due to 2 previous errors
+error[E0271]: type mismatch resolving `<std::collections::hash_map::Iter<'_, _, _> as Iterator>::Item == &_`
+ --> $DIR/issue-33941.rs:6:14
+ |
+LL | for _ in HashMap::new().iter().cloned() {}
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ expected tuple, found reference
+ |
+ = note: expected tuple `(&_, &_)`
+ found reference `&_`
+ = note: required because of the requirements on the impl of `Iterator` for `Cloned<std::collections::hash_map::Iter<'_, _, _>>`
+
+error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0271`.
LL | const foo: isize = 3;
| ^^^ help: convert the identifier to upper case (notice the capitalization): `FOO`
|
-note: the lint level is defined here
- --> $DIR/issue-17718-const-naming.rs:2:9
- |
-LL | #![deny(warnings)]
- | ^^^^^^^^
= note: `#[deny(non_upper_case_globals)]` implied by `#[deny(warnings)]`
error: aborting due to 2 previous errors
LL | static bad: isize = 1;
| ^^^ help: convert the identifier to upper case: `BAD`
|
-note: the lint level is defined here
- --> $DIR/lint-group-nonstandard-style.rs:10:14
- |
-LL | #[forbid(nonstandard_style)]
- | ^^^^^^^^^^^^^^^^^
= note: `#[forbid(non_upper_case_globals)]` implied by `#[forbid(nonstandard_style)]`
warning: function `CamelCase` should have a snake case name
LL | fn CamelCase() {}
| ^^^^^^^^^ help: convert the identifier to snake case: `camel_case`
|
-note: the lint level is defined here
- --> $DIR/lint-group-nonstandard-style.rs:18:17
- |
-LL | #![warn(nonstandard_style)]
- | ^^^^^^^^^^^^^^^^^
= note: `#[warn(non_snake_case)]` implied by `#[warn(nonstandard_style)]`
error: aborting due to 3 previous errors; 2 warnings emitted
LL | hours_are_suns = false;
| ^^^^^^^^^^^^^^
|
-note: the lint level is defined here
- --> $DIR/issue-47390-unused-variable-in-struct-pattern.rs:5:9
- |
-LL | #![warn(unused)] // UI tests pass `-A unused` (#43896)
- | ^^^^^^
= note: `#[warn(unused_assignments)]` implied by `#[warn(unused)]`
= help: maybe it is overwritten before being read?
| |
| help: remove this `mut`
|
-note: the lint level is defined here
- --> $DIR/issue-47390-unused-variable-in-struct-pattern.rs:5:9
- |
-LL | #![warn(unused)] // UI tests pass `-A unused` (#43896)
- | ^^^^^^
= note: `#[warn(unused_mut)]` implied by `#[warn(unused)]`
warning: variable does not need to be mutable
LL | b += 1;
| ^
|
-note: the lint level is defined here
- --> $DIR/liveness-consts.rs:2:9
- |
-LL | #![warn(unused)]
- | ^^^^^^
= note: `#[warn(unused_assignments)]` implied by `#[warn(unused)]`
= help: maybe it is overwritten before being read?
LL | last = Some(s);
| ^^^^
|
-note: the lint level is defined here
- --> $DIR/liveness-upvars.rs:4:9
- |
-LL | #![warn(unused)]
- | ^^^^^^
= note: `#[warn(unused_variables)]` implied by `#[warn(unused)]`
= help: did you mean to capture by reference instead?
LL | let x: ! = panic!("aah");
| ^ help: if this is intentional, prefix it with an underscore: `_x`
|
-note: the lint level is defined here
- --> $DIR/never-assign-dead-code.rs:6:9
- |
-LL | #![warn(unused)]
- | ^^^^^^
= note: `#[warn(unused_variables)]` implied by `#[warn(unused)]`
warning: 3 warnings emitted
LL | #[derive(generate_mod::CheckDerive)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^ names from parent modules are not accessible without an explicit import
|
+ = note: `#[deny(proc_macro_derive_resolution_fallback)]` on by default
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #83583 <https://github.com/rust-lang/rust/issues/83583>
= note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
LL | #[derive(generate_mod::CheckDerive)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^ names from parent modules are not accessible without an explicit import
|
+ = note: `#[deny(proc_macro_derive_resolution_fallback)]` on by default
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #83583 <https://github.com/rust-lang/rust/issues/83583>
= note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
LL | #[derive(generate_mod::CheckDerive)]
| ^^^^^^^^^^^^^^^^^^^^^^^^^ names from parent modules are not accessible without an explicit import
|
+ = note: `#[deny(proc_macro_derive_resolution_fallback)]` on by default
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #83583 <https://github.com/rust-lang/rust/issues/83583>
= note: this error originates in the derive macro `generate_mod::CheckDerive` (in Nightly builds, run with -Z macro-backtrace for more info)
LL | #[derive(generate_mod::CheckDeriveLint)] // OK, lint is suppressed
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ names from parent modules are not accessible without an explicit import
|
+note: the lint level is defined here
+ --> $DIR/generate-mod.rs:30:10
+ |
+LL | #[derive(generate_mod::CheckDeriveLint)] // OK, lint is suppressed
+ | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #83583 <https://github.com/rust-lang/rust/issues/83583>
= note: this warning originates in the derive macro `generate_mod::CheckDeriveLint` (in Nightly builds, run with -Z macro-backtrace for more info)
LL | impl_macros!(Foo);
| ----------------- in this macro invocation
|
+ = note: `#[deny(proc_macro_back_compat)]` on by default
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
= note: the `time-macros-impl` crate will stop compiling in futures version of Rust. Please update to the latest version of the `time` crate to avoid breakage
LL | arrays!(Foo);
| ------------ in this macro invocation
|
+ = note: `#[deny(proc_macro_back_compat)]` on by default
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
= note: older versions of the `js-sys` crate will stop compiling in future versions of Rust; please update to `js-sys` v0.3.40 or above
LL | tuple_from_req!(Foo);
| -------------------- in this macro invocation
|
+ = note: `#[deny(proc_macro_back_compat)]` on by default
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
= note: the version of `actix-web` you are using might stop compiling in future versions of Rust; please update to the latest version of the `actix-web` crate to avoid breakage
LL | tuple_from_req!(Foo);
| -------------------- in this macro invocation
|
+ = note: `#[deny(proc_macro_back_compat)]` on by default
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
= note: the version of `actix-web` you are using might stop compiling in future versions of Rust; please update to the latest version of the `actix-web` crate to avoid breakage
LL | enum ProceduralMasqueradeDummyType {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
+ = note: `#[deny(proc_macro_back_compat)]` on by default
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
= note: The `procedural-masquerade` crate has been unnecessary since Rust 1.30.0. Versions of this crate below 0.1.7 will eventually stop compiling.
LL | enum ProceduralMasqueradeDummyType {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
+ = note: `#[deny(proc_macro_back_compat)]` on by default
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
= note: The `procedural-masquerade` crate has been unnecessary since Rust 1.30.0. Versions of this crate below 0.1.7 will eventually stop compiling.
LL | enum ProceduralMasqueradeDummyType {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
+ = note: `#[deny(proc_macro_back_compat)]` on by default
= warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
= note: for more information, see issue #83125 <https://github.com/rust-lang/rust/issues/83125>
= note: The `procedural-masquerade` crate has been unnecessary since Rust 1.30.0. Versions of this crate below 0.1.7 will eventually stop compiling.
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