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A-clippyArea: ClippyArea: ClippyA-lintsArea: Lints (warnings about flaws in source code) such as unused_mut.Area: Lints (warnings about flaws in source code) such as unused_mut.C-bugCategory: This is a bug.Category: This is a bug.L-dead_codeLint: dead_codeLint: dead_codeL-unused_importsLint: unused_importsLint: unused_imports
Description
running cargo clippy -- -Dwarnings -Fdead_code
in my binary produces two errors and no warnings. both errors are coming from clap
.
error[E0453]: allow(dead_code) incompatible with previous forbid
|
| #[derive(Parser, Debug, Clone)]
| ^^^^^^ overruled by previous forbid
|
= note: `forbid` lint level was set on command line
= note: this error originates in the derive macro `Parser` (in Nightly builds, run with -Z macro-backtrace for more info)
however, running cargo clippy -- -Dwarnings -Funused
produces 1158 warnings and no errors. and example of one of the warnings is
warning: allow(unused_imports) incompatible with previous forbid
|
| info!("a log message");
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^ overruled by previous forbid
|
= 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 #81670 <https://github.com/rust-lang/rust/issues/81670>
= note: `forbid` lint level was set on command line
= note: this warning originates in the macro `$crate::valueset` which comes from the expansion of the macro `info` (in Nightly builds, run with -Z macro-backtrace for more info)
- i thought since
dead_code
is a subset of theunused
lint group that if-Fdead_code
produced errors that-Funused
should produce at least the same number of errors. - why is that a warning? shouldn't
warning: allow(unused_imports) incompatible with previous forbid
be an error since i added a forbid?
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A-clippyArea: ClippyArea: ClippyA-lintsArea: Lints (warnings about flaws in source code) such as unused_mut.Area: Lints (warnings about flaws in source code) such as unused_mut.C-bugCategory: This is a bug.Category: This is a bug.L-dead_codeLint: dead_codeLint: dead_codeL-unused_importsLint: unused_importsLint: unused_imports