address unused_qualifications lint issues from nightly

This is another change that is currently breaking the coverage task.

boreal-parser/src/expression/for_expression.rs

@@ -284,7 +284,7 @@ fn string_enum_element(input: Input) -> ParseResult<SetElement> {
 /// Equivalent to the `for_variables` pattern in grammar.y in libyara.
 fn for_variables(input: Input) -> ParseResult<(Vec<String>, Range<usize>)> {
     let start = input.pos();
-    let (input, identifiers) = separated_list1(rtrim(char(',')), crate::string::identifier)(input)?;
+    let (input, identifiers) = separated_list1(rtrim(char(',')), string::identifier)(input)?;
     Ok((input, (identifiers, input.get_span_from(start))))
 }
 

boreal/src/module/pe.rs

@@ -2004,7 +2004,7 @@ impl Pe {
 
         // Compute offset of checksum in the file: this is replaced by 0 when computing the
         // checksum
-        let dos_header = pe::ImageDosHeader::parse(mem).ok()?;
+        let dos_header = ImageDosHeader::parse(mem).ok()?;
         // 64 is the offset of the checksum in the optional header, and 24 is the offset of the
         // optional header in the nt headers: See
         // <https://docs.microsoft.com/en-us/windows/win32/debug/pe-format>

boreal/src/regex/mod.rs

@@ -21,7 +21,7 @@ pub(crate) use visitor::{visit, VisitAction, Visitor};
 /// Regex following the YARA format.
 #[derive(Clone, Debug)]
 pub struct Regex {
-    meta: regex_automata::meta::Regex,
+    meta: meta::Regex,
     expr: String,
 }
 

boreal/src/scanner/process/sys/linux.rs

@@ -219,7 +219,7 @@ impl MapRegion {
             return None;
         }
 
-        let file = std::fs::File::open(path).ok()?;
+        let file = File::open(path).ok()?;
 
         // Then, redo the checks but on the metadata of the opened files, to prevent
         // any TOCTOU issues.