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Auto merge of #78864 - Mark-Simulacrum:warn-on-forbids, r=pnkfelix

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Use true previous lint level when detecting overriden forbids

Previously, cap-lints was ignored when checking the previous forbid level, which
meant that it was a hard error to do so. This is different from the normal
behavior of lints, which are silenced by cap-lints; if the forbid would not take
effect regardless, there is not much point in complaining about the fact that we
are reducing its level.

It might be considered a bug that even `--cap-lints deny` would suffice to
silence the error on overriding forbid, depending on if one cares about failing
the build or precisely forbid being set. But setting cap-lints to deny is quite
odd and not really done in practice, so we don't try to handle it specially.

This also unifies the code paths for nested and same-level scopes. However, the
special case for CLI lint flags is left in place (introduced by #70918) to fix
the regression noted in #70819. That means that CLI flags do not lint on forbid
being overridden by a non-forbid level. It is unclear whether this is a bug or a
desirable feature, but it is certainly inconsistent. CLI flags are a
sufficiently different "type" of place though that this is deemed out of scope
for this commit.

r? `@pnkfelix` perhaps?

cc #77713 -- not marking as "Fixes" because of the lack of proper unused attribute handling in this PR
This commit is contained in:
bors 2020-12-02 02:07:45 +00:00
commit eb4860c7e1
18 changed files with 127 additions and 235 deletions
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70
compiler/rustc_lint/src/levels.rs
View File

@ -108,18 +108,32 @@ impl<'s> LintLevelsBuilder<'s> {
id: LintId,
(level, src): LevelSource,
) {
if let Some((old_level, old_src)) = specs.get(&id) {
if old_level == &Level::Forbid && level != Level::Forbid {
// Setting to a non-forbid level is an error if the lint previously had
// a forbid level. Note that this is not necessarily true even with a
// `#[forbid(..)]` attribute present, as that is overriden by `--cap-lints`.
//
// This means that this only errors if we're truly lowering the lint
// level from forbid.
if level != Level::Forbid {
if let (Level::Forbid, old_src) =
self.sets.get_lint_level(id.lint, self.cur, Some(&specs), &self.sess)
{
let mut diag_builder = struct_span_err!(
self.sess,
src.span(),
E0453,
"{}({}) incompatible with previous forbid in same scope",
"{}({}) incompatible with previous forbid",
level.as_str(),
src.name(),
);
match *old_src {
LintSource::Default => {}
diag_builder.span_label(src.span(), "overruled by previous forbid");
match old_src {
LintSource::Default => {
diag_builder.note(&format!(
"`forbid` lint level is the default for {}",
id.to_string()
));
}
LintSource::Node(_, forbid_source_span, reason) => {
diag_builder.span_label(forbid_source_span, "`forbid` level set here");
if let Some(rationale) = reason {
@ -131,6 +145,8 @@ impl<'s> LintLevelsBuilder<'s> {
}
}
diag_builder.emit();
// Retain the forbid lint level
return;
}
}
@ -414,50 +430,6 @@ impl<'s> LintLevelsBuilder<'s> {
}
}
for (id, &(level, ref src)) in specs.iter() {
if level == Level::Forbid {
continue;
}
let forbid_src = match self.sets.get_lint_id_level(*id, self.cur, None) {
(Some(Level::Forbid), src) => src,
_ => continue,
};
let forbidden_lint_name = match forbid_src {
LintSource::Default => id.to_string(),
LintSource::Node(name, _, _) => name.to_string(),
LintSource::CommandLine(name, _) => name.to_string(),
};
let (lint_attr_name, lint_attr_span) = match *src {
LintSource::Node(name, span, _) => (name, span),
_ => continue,
};
let mut diag_builder = struct_span_err!(
self.sess,
lint_attr_span,
E0453,
"{}({}) overruled by outer forbid({})",
level.as_str(),
lint_attr_name,
forbidden_lint_name
);
diag_builder.span_label(lint_attr_span, "overruled by previous forbid");
match forbid_src {
LintSource::Default => {}
LintSource::Node(_, forbid_source_span, reason) => {
diag_builder.span_label(forbid_source_span, "`forbid` level set here");
if let Some(rationale) = reason {
diag_builder.note(&rationale.as_str());
}
}
LintSource::CommandLine(_, _) => {
diag_builder.note("`forbid` lint level was set on command line");
}
}
diag_builder.emit();
// don't set a separate error for every lint in the group
break;
}
let prev = self.cur;
if !specs.is_empty() {
self.cur = self.sets.list.len() as u32;

8
src/test/ui-fulldeps/lint-plugin-forbid-attrs.rs
View File

@ -6,12 +6,12 @@
//~^ WARN use of deprecated attribute `plugin`
#![forbid(test_lint)]
fn lintme() { } //~ ERROR item is named 'lintme'
fn lintme() {} //~ ERROR item is named 'lintme'
#[allow(test_lint)]
//~^ ERROR allow(test_lint) overruled by outer forbid(test_lint)
//~| ERROR allow(test_lint) overruled by outer forbid(test_lint)
//~| ERROR allow(test_lint) overruled by outer forbid(test_lint)
//~^ ERROR allow(test_lint) incompatible
//~| ERROR allow(test_lint) incompatible
//~| ERROR allow(test_lint) incompatible
pub fn main() {
lintme();
}

10
src/test/ui-fulldeps/lint-plugin-forbid-attrs.stderr
View File

@ -1,4 +1,4 @@
error[E0453]: allow(test_lint) overruled by outer forbid(test_lint)
error[E0453]: allow(test_lint) incompatible with previous forbid
--> $DIR/lint-plugin-forbid-attrs.rs:11:9
|
LL | #![forbid(test_lint)]
@ -7,7 +7,7 @@ LL | #![forbid(test_lint)]
LL | #[allow(test_lint)]
| ^^^^^^^^^ overruled by previous forbid
error[E0453]: allow(test_lint) overruled by outer forbid(test_lint)
error[E0453]: allow(test_lint) incompatible with previous forbid
--> $DIR/lint-plugin-forbid-attrs.rs:11:9
|
LL | #![forbid(test_lint)]
@ -27,8 +27,8 @@ LL | #![plugin(lint_plugin_test)]
error: item is named 'lintme'
--> $DIR/lint-plugin-forbid-attrs.rs:9:1
|
LL | fn lintme() { }
| ^^^^^^^^^^^^^^^
LL | fn lintme() {}
| ^^^^^^^^^^^^^^
|
note: the lint level is defined here
--> $DIR/lint-plugin-forbid-attrs.rs:7:11
@ -36,7 +36,7 @@ note: the lint level is defined here
LL | #![forbid(test_lint)]
| ^^^^^^^^^
error[E0453]: allow(test_lint) overruled by outer forbid(test_lint)
error[E0453]: allow(test_lint) incompatible with previous forbid
--> $DIR/lint-plugin-forbid-attrs.rs:11:9
|
LL | #![forbid(test_lint)]

6
src/test/ui-fulldeps/lint-plugin-forbid-cmdline.rs
View File

@ -7,9 +7,9 @@
//~^ WARN use of deprecated attribute `plugin`
fn lintme() { } //~ ERROR item is named 'lintme'
#[allow(test_lint)] //~ ERROR allow(test_lint) overruled by outer forbid(test_lint)
//~| ERROR allow(test_lint) overruled by outer forbid(test_lint)
//~| ERROR allow(test_lint) overruled by outer forbid(test_lint)
#[allow(test_lint)] //~ ERROR allow(test_lint) incompatible
//~| ERROR allow(test_lint) incompatible
//~| ERROR allow(test_lint)
pub fn main() {
lintme();
}

6
src/test/ui-fulldeps/lint-plugin-forbid-cmdline.stderr
View File

@ -1,4 +1,4 @@
error[E0453]: allow(test_lint) overruled by outer forbid(test_lint)
error[E0453]: allow(test_lint) incompatible with previous forbid
--> $DIR/lint-plugin-forbid-cmdline.rs:10:9
|
LL | #[allow(test_lint)]
@ -6,7 +6,7 @@ LL | #[allow(test_lint)]
|
= note: `forbid` lint level was set on command line
error[E0453]: allow(test_lint) overruled by outer forbid(test_lint)
error[E0453]: allow(test_lint) incompatible with previous forbid
--> $DIR/lint-plugin-forbid-cmdline.rs:10:9
|
LL | #[allow(test_lint)]
@ -30,7 +30,7 @@ LL | fn lintme() { }
|
= note: requested on the command line with `-F test-lint`
error[E0453]: allow(test_lint) overruled by outer forbid(test_lint)
error[E0453]: allow(test_lint) incompatible with previous forbid
--> $DIR/lint-plugin-forbid-cmdline.rs:10:9
|
LL | #[allow(test_lint)]

6
src/test/ui/error-codes/E0453.rs
View File

@ -1,8 +1,8 @@
#![forbid(non_snake_case)]
#[allow(non_snake_case)]
//~^ ERROR allow(non_snake_case) overruled by outer forbid(non_snake_case)
//~| ERROR allow(non_snake_case) overruled by outer forbid(non_snake_case)
//~| ERROR allow(non_snake_case) overruled by outer forbid(non_snake_case)
//~^ ERROR allow(non_snake_case) incompatible
//~| ERROR allow(non_snake_case) incompatible
//~| ERROR allow(non_snake_case) incompatible
fn main() {
}

6
src/test/ui/error-codes/E0453.stderr
View File

@ -1,4 +1,4 @@
error[E0453]: allow(non_snake_case) overruled by outer forbid(non_snake_case)
error[E0453]: allow(non_snake_case) incompatible with previous forbid
--> $DIR/E0453.rs:3:9
|
LL | #![forbid(non_snake_case)]
@ -7,7 +7,7 @@ LL |
LL | #[allow(non_snake_case)]
| ^^^^^^^^^^^^^^ overruled by previous forbid
error[E0453]: allow(non_snake_case) overruled by outer forbid(non_snake_case)
error[E0453]: allow(non_snake_case) incompatible with previous forbid
--> $DIR/E0453.rs:3:9
|
LL | #![forbid(non_snake_case)]
@ -16,7 +16,7 @@ LL |
LL | #[allow(non_snake_case)]
| ^^^^^^^^^^^^^^ overruled by previous forbid
error[E0453]: allow(non_snake_case) overruled by outer forbid(non_snake_case)
error[E0453]: allow(non_snake_case) incompatible with previous forbid
--> $DIR/E0453.rs:3:9
|
LL | #![forbid(non_snake_case)]

15
src/test/ui/lint/forbid-error-capped.rs Normal file
View File

@ -0,0 +1,15 @@
// check-pass
// compile-args: --cap-lints=warn -Fwarnings
// This checks that the forbid attribute checking is ignored when the forbidden
// lint is capped.
#![forbid(warnings)]
#![allow(unused)]
#[allow(unused)]
mod bar {
fn bar() {}
}
fn main() {}

6
src/test/ui/lint/issue-70819-dont-override-forbid-in-same-scope.rs
View File

@ -17,11 +17,11 @@
fn forbid_first(num: i32) -> i32 {
#![forbid(unused)]
#![deny(unused)]
//~^ ERROR: deny(unused) incompatible with previous forbid in same scope [E0453]
//~^ ERROR: deny(unused) incompatible with previous forbid
#![warn(unused)]
//~^ ERROR: warn(unused) incompatible with previous forbid in same scope [E0453]
//~^ ERROR: warn(unused) incompatible with previous forbid
#![allow(unused)]
//~^ ERROR: allow(unused) incompatible with previous forbid in same scope [E0453]
//~^ ERROR: allow(unused) incompatible with previous forbid
num * num
}

12
src/test/ui/lint/issue-70819-dont-override-forbid-in-same-scope.stderr
View File

@ -1,28 +1,28 @@
error[E0453]: deny(unused) incompatible with previous forbid in same scope
error[E0453]: deny(unused) incompatible with previous forbid
--> $DIR/issue-70819-dont-override-forbid-in-same-scope.rs:19:13
|
LL | #![forbid(unused)]
| ------ `forbid` level set here
LL | #![deny(unused)]
| ^^^^^^
| ^^^^^^ overruled by previous forbid
error[E0453]: warn(unused) incompatible with previous forbid in same scope
error[E0453]: warn(unused) incompatible with previous forbid
--> $DIR/issue-70819-dont-override-forbid-in-same-scope.rs:21:13
|
LL | #![forbid(unused)]
| ------ `forbid` level set here
...
LL | #![warn(unused)]
| ^^^^^^
| ^^^^^^ overruled by previous forbid
error[E0453]: allow(unused) incompatible with previous forbid in same scope
error[E0453]: allow(unused) incompatible with previous forbid
--> $DIR/issue-70819-dont-override-forbid-in-same-scope.rs:23:14
|
LL | #![forbid(unused)]
| ------ `forbid` level set here
...
LL | #![allow(unused)]
| ^^^^^^
| ^^^^^^ overruled by previous forbid
error: aborting due to 3 previous errors

6
src/test/ui/lint/lint-forbid-attr.rs
View File

@ -1,8 +1,8 @@
#![forbid(deprecated)]
#[allow(deprecated)]
//~^ ERROR allow(deprecated) overruled by outer forbid(deprecated)
//~| ERROR allow(deprecated) overruled by outer forbid(deprecated)
//~| ERROR allow(deprecated) overruled by outer forbid(deprecated)
//~^ ERROR allow(deprecated) incompatible
//~| ERROR allow(deprecated) incompatible
//~| ERROR allow(deprecated) incompatible
fn main() {
}

6
src/test/ui/lint/lint-forbid-attr.stderr
View File

@ -1,4 +1,4 @@
error[E0453]: allow(deprecated) overruled by outer forbid(deprecated)
error[E0453]: allow(deprecated) incompatible with previous forbid
--> $DIR/lint-forbid-attr.rs:3:9
|
LL | #![forbid(deprecated)]
@ -7,7 +7,7 @@ LL |
LL | #[allow(deprecated)]
| ^^^^^^^^^^ overruled by previous forbid
error[E0453]: allow(deprecated) overruled by outer forbid(deprecated)
error[E0453]: allow(deprecated) incompatible with previous forbid
--> $DIR/lint-forbid-attr.rs:3:9
|
LL | #![forbid(deprecated)]
@ -16,7 +16,7 @@ LL |
LL | #[allow(deprecated)]
| ^^^^^^^^^^ overruled by previous forbid
error[E0453]: allow(deprecated) overruled by outer forbid(deprecated)
error[E0453]: allow(deprecated) incompatible with previous forbid
--> $DIR/lint-forbid-attr.rs:3:9
|
LL | #![forbid(deprecated)]

6
src/test/ui/lint/lint-forbid-cmdline.rs
View File

@ -1,7 +1,7 @@
// compile-flags: -F deprecated
#[allow(deprecated)] //~ ERROR allow(deprecated) overruled by outer forbid(deprecated)
//~| ERROR allow(deprecated) overruled by outer forbid(deprecated)
//~| ERROR allow(deprecated) overruled by outer forbid(deprecated)
#[allow(deprecated)] //~ ERROR allow(deprecated) incompatible
//~| ERROR allow(deprecated) incompatible
//~| ERROR allow(deprecated) incompatible
fn main() {
}

6
src/test/ui/lint/lint-forbid-cmdline.stderr
View File

@ -1,4 +1,4 @@
error[E0453]: allow(deprecated) overruled by outer forbid(deprecated)
error[E0453]: allow(deprecated) incompatible with previous forbid
--> $DIR/lint-forbid-cmdline.rs:3:9
|
LL | #[allow(deprecated)]
@ -6,7 +6,7 @@ LL | #[allow(deprecated)]
|
= note: `forbid` lint level was set on command line
error[E0453]: allow(deprecated) overruled by outer forbid(deprecated)
error[E0453]: allow(deprecated) incompatible with previous forbid
--> $DIR/lint-forbid-cmdline.rs:3:9
|
LL | #[allow(deprecated)]
@ -14,7 +14,7 @@ LL | #[allow(deprecated)]
|
= note: `forbid` lint level was set on command line
error[E0453]: allow(deprecated) overruled by outer forbid(deprecated)
error[E0453]: allow(deprecated) incompatible with previous forbid
--> $DIR/lint-forbid-cmdline.rs:3:9
|
LL | #[allow(deprecated)]

22
src/test/ui/lint/outer-forbid.rs
View File

@ -4,21 +4,25 @@
// subsequent allowance of a lint group containing it (here, `nonstandard_style`). See
// Issue #42873.
// If you turn off deduplicate diagnostics (which rustc turns on by default but
// compiletest turns off when it runs ui tests), then the errors are
// (unfortunately) repeated here because the checking is done as we read in the
// errors, and currently that happens two or three different times, depending on
// compiler flags.
//
// The test is much cleaner if we deduplicate, though.
// compile-flags: -Z deduplicate-diagnostics=yes
#![forbid(unused, non_snake_case)]
#[allow(unused_variables)] //~ ERROR overruled
//~| ERROR overruled
//~| ERROR overruled
#[allow(unused_variables)] //~ ERROR incompatible with previous
fn foo() {}
#[allow(unused)] //~ ERROR overruled
//~| ERROR overruled
//~| ERROR overruled
#[allow(unused)] //~ ERROR incompatible with previous
fn bar() {}
#[allow(nonstandard_style)] //~ ERROR overruled
//~| ERROR overruled
//~| ERROR overruled
#[allow(nonstandard_style)] //~ ERROR incompatible with previous
fn main() {
println!("hello forbidden world")
}

68
src/test/ui/lint/outer-forbid.stderr
View File

@ -1,5 +1,5 @@
error[E0453]: allow(unused_variables) overruled by outer forbid(unused)
--> $DIR/outer-forbid.rs:9:9
error[E0453]: allow(unused_variables) incompatible with previous forbid
--> $DIR/outer-forbid.rs:19:9
|
LL | #![forbid(unused, non_snake_case)]
| ------ `forbid` level set here
@ -7,8 +7,8 @@ LL |
LL | #[allow(unused_variables)]
| ^^^^^^^^^^^^^^^^ overruled by previous forbid
error[E0453]: allow(unused) overruled by outer forbid(unused)
--> $DIR/outer-forbid.rs:14:9
error[E0453]: allow(unused) incompatible with previous forbid
--> $DIR/outer-forbid.rs:22:9
|
LL | #![forbid(unused, non_snake_case)]
| ------ `forbid` level set here
@ -16,8 +16,8 @@ LL | #![forbid(unused, non_snake_case)]
LL | #[allow(unused)]
| ^^^^^^ overruled by previous forbid
error[E0453]: allow(nonstandard_style) overruled by outer forbid(non_snake_case)
--> $DIR/outer-forbid.rs:19:9
error[E0453]: allow(nonstandard_style) incompatible with previous forbid
--> $DIR/outer-forbid.rs:25:9
|
LL | #![forbid(unused, non_snake_case)]
| -------------- `forbid` level set here
@ -25,60 +25,6 @@ LL | #![forbid(unused, non_snake_case)]
LL | #[allow(nonstandard_style)]
| ^^^^^^^^^^^^^^^^^ overruled by previous forbid
error[E0453]: allow(unused_variables) overruled by outer forbid(unused)
--> $DIR/outer-forbid.rs:9:9
|
LL | #![forbid(unused, non_snake_case)]
| ------ `forbid` level set here
LL |
LL | #[allow(unused_variables)]
| ^^^^^^^^^^^^^^^^ overruled by previous forbid
error[E0453]: allow(unused) overruled by outer forbid(unused)
--> $DIR/outer-forbid.rs:14:9
|
LL | #![forbid(unused, non_snake_case)]
| ------ `forbid` level set here
...
LL | #[allow(unused)]
| ^^^^^^ overruled by previous forbid
error[E0453]: allow(nonstandard_style) overruled by outer forbid(non_snake_case)
--> $DIR/outer-forbid.rs:19:9
|
LL | #![forbid(unused, non_snake_case)]
| -------------- `forbid` level set here
...
LL | #[allow(nonstandard_style)]
| ^^^^^^^^^^^^^^^^^ overruled by previous forbid
error[E0453]: allow(unused_variables) overruled by outer forbid(unused)
--> $DIR/outer-forbid.rs:9:9
|
LL | #![forbid(unused, non_snake_case)]
| ------ `forbid` level set here
LL |
LL | #[allow(unused_variables)]
| ^^^^^^^^^^^^^^^^ overruled by previous forbid
error[E0453]: allow(unused) overruled by outer forbid(unused)
--> $DIR/outer-forbid.rs:14:9
|
LL | #![forbid(unused, non_snake_case)]
| ------ `forbid` level set here
...
LL | #[allow(unused)]
| ^^^^^^ overruled by previous forbid
error[E0453]: allow(nonstandard_style) overruled by outer forbid(non_snake_case)
--> $DIR/outer-forbid.rs:19:9
|
LL | #![forbid(unused, non_snake_case)]
| -------------- `forbid` level set here
...
LL | #[allow(nonstandard_style)]
| ^^^^^^^^^^^^^^^^^ overruled by previous forbid
error: aborting due to 9 previous errors
error: aborting due to 3 previous errors
For more information about this error, try `rustc --explain E0453`.

37
src/test/ui/lint/reasons-forbidden.rs
View File

@ -1,13 +1,19 @@
#![feature(lint_reasons)]
// If you turn off deduplicate diagnostics (which rustc turns on by default but
// compiletest turns off when it runs ui tests), then the errors are
// (unfortunately) repeated here because the checking is done as we read in the
// errors, and currently that happens two or three different times, depending on
// compiler flags.
//
// The test is much cleaner if we deduplicate, though.
// compile-flags: -Z deduplicate-diagnostics=yes
#![forbid(
unsafe_code,
//~^ NOTE `forbid` level set here
//~| NOTE `forbid` level set here
//~| NOTE `forbid` level set here
//~| NOTE `forbid` level set here
//~| NOTE `forbid` level set here
//~| NOTE `forbid` level set here
//~| NOTE the lint level is defined here
reason = "our errors & omissions insurance policy doesn't cover unsafe Rust"
)]
@ -17,25 +23,12 @@ fn main() {
let a_billion_dollar_mistake = ptr::null();
#[allow(unsafe_code)]
//~^ ERROR allow(unsafe_code) overruled by outer forbid(unsafe_code)
//~| ERROR allow(unsafe_code) overruled by outer forbid(unsafe_code)
//~| ERROR allow(unsafe_code) overruled by outer forbid(unsafe_code)
//~| ERROR allow(unsafe_code) overruled by outer forbid(unsafe_code)
//~| ERROR allow(unsafe_code) overruled by outer forbid(unsafe_code)
//~| ERROR allow(unsafe_code) overruled by outer forbid(unsafe_code)
//~| NOTE overruled by previous forbid
//~| NOTE overruled by previous forbid
//~| NOTE overruled by previous forbid
//~| NOTE overruled by previous forbid
//~| NOTE overruled by previous forbid
//~| NOTE overruled by previous forbid
//~| NOTE our errors & omissions insurance policy doesn't cover unsafe Rust
//~| NOTE our errors & omissions insurance policy doesn't cover unsafe Rust
//~| NOTE our errors & omissions insurance policy doesn't cover unsafe Rust
//~| NOTE our errors & omissions insurance policy doesn't cover unsafe Rust
//~| NOTE our errors & omissions insurance policy doesn't cover unsafe Rust
//~^ ERROR allow(unsafe_code) incompatible with previous forbid
//~| NOTE our errors & omissions insurance policy doesn't cover unsafe Rust
//~| NOTE overruled by previous forbid
unsafe {
//~^ ERROR usage of an `unsafe` block
//~| NOTE our errors & omissions insurance policy doesn't cover unsafe Rust
*a_billion_dollar_mistake
}
}

66
src/test/ui/lint/reasons-forbidden.stderr
View File

@ -1,5 +1,5 @@
error[E0453]: allow(unsafe_code) overruled by outer forbid(unsafe_code)
--> $DIR/reasons-forbidden.rs:19:13
error[E0453]: allow(unsafe_code) incompatible with previous forbid
--> $DIR/reasons-forbidden.rs:25:13
|
LL | unsafe_code,
| ----------- `forbid` level set here
@ -9,61 +9,23 @@ LL | #[allow(unsafe_code)]
|
= note: our errors & omissions insurance policy doesn't cover unsafe Rust
error[E0453]: allow(unsafe_code) overruled by outer forbid(unsafe_code)
--> $DIR/reasons-forbidden.rs:19:13
error: usage of an `unsafe` block
--> $DIR/reasons-forbidden.rs:29:5
|
LL | unsafe_code,
| ----------- `forbid` level set here
...
LL | #[allow(unsafe_code)]
| ^^^^^^^^^^^ overruled by previous forbid
LL | / unsafe {
LL | |
LL | |
LL | | *a_billion_dollar_mistake
LL | | }
| |_____^
|
= note: our errors & omissions insurance policy doesn't cover unsafe Rust
error[E0453]: allow(unsafe_code) overruled by outer forbid(unsafe_code)
--> $DIR/reasons-forbidden.rs:19:13
note: the lint level is defined here
--> $DIR/reasons-forbidden.rs:14:5
|
LL | unsafe_code,
| ----------- `forbid` level set here
...
LL | #[allow(unsafe_code)]
| ^^^^^^^^^^^ overruled by previous forbid
|
= note: our errors & omissions insurance policy doesn't cover unsafe Rust
| ^^^^^^^^^^^
error[E0453]: allow(unsafe_code) overruled by outer forbid(unsafe_code)
--> $DIR/reasons-forbidden.rs:19:13
|
LL | unsafe_code,
| ----------- `forbid` level set here
...
LL | #[allow(unsafe_code)]
| ^^^^^^^^^^^ overruled by previous forbid
|
= note: our errors & omissions insurance policy doesn't cover unsafe Rust
error[E0453]: allow(unsafe_code) overruled by outer forbid(unsafe_code)
--> $DIR/reasons-forbidden.rs:19:13
|
LL | unsafe_code,
| ----------- `forbid` level set here
...
LL | #[allow(unsafe_code)]
| ^^^^^^^^^^^ overruled by previous forbid
|
= note: our errors & omissions insurance policy doesn't cover unsafe Rust
error[E0453]: allow(unsafe_code) overruled by outer forbid(unsafe_code)
--> $DIR/reasons-forbidden.rs:19:13
|
LL | unsafe_code,
| ----------- `forbid` level set here
...
LL | #[allow(unsafe_code)]
| ^^^^^^^^^^^ overruled by previous forbid
|
= note: our errors & omissions insurance policy doesn't cover unsafe Rust
error: aborting due to 6 previous errors
error: aborting due to 2 previous errors
For more information about this error, try `rustc --explain E0453`.