Fix nightly Rust/Clippy lints

In particular, this takes care of rust-lang/rust#79202
as well as some clippy nightly suggestions.

There is a new very noisy https://rust-lang.github.io/rust-clippy/master/index.html#upper_case_acronyms
but I didn’t take care of that one.

crates/rslint_config/src/lib.rs

@@ -38,8 +38,8 @@ impl Default for ConfigRepr {
     }
 }
 
-#[serde(default)]
 #[derive(Debug, Deserialize, Serialize, Default)]
+#[serde(default)]
 struct RulesConfigRepr {
     #[serde(deserialize_with = "de::from_rule_objects")]
     errors: RuleList,

crates/rslint_core/src/rule.rs

@@ -347,10 +347,10 @@ macro_rules! __declare_lint_inner {
         use serde::{Deserialize, Serialize};
 
         #[doc = $doc]
-        #[serde(rename_all = "camelCase")]
         #[cfg_attr(feature = "schema", derive(schemars::JsonSchema))]
         $(#[$outer])*
         #[derive(Debug, Clone, Deserialize, Serialize)]
+        #[serde(rename_all = "camelCase")]
         pub struct $name {
             $(
                 $(

crates/rslint_errors/src/lsp.rs

@@ -57,15 +57,11 @@ pub fn convert_to_lsp_diagnostic(
         message.push_str(&footer.msg);
     }
 
-    let tags = if let Some(tag) = diagnostic.tag {
-        Some(match tag {
-            DiagnosticTag::Deprecated => vec![LspTag::Deprecated],
-            DiagnosticTag::Unnecessary => vec![LspTag::Unnecessary],
-            DiagnosticTag::Both => vec![LspTag::Deprecated, LspTag::Unnecessary],
-        })
-    } else {
-        None
-    };
+    let tags = diagnostic.tag.map(|tag| match tag {
+        DiagnosticTag::Deprecated => vec![LspTag::Deprecated],
+        DiagnosticTag::Unnecessary => vec![LspTag::Unnecessary],
+        DiagnosticTag::Both => vec![LspTag::Deprecated, LspTag::Unnecessary],
+    });
 
     Some(lsp_types::Diagnostic {
         range: primary_label?,

crates/rslint_lsp/src/core/session.rs

@@ -14,8 +14,8 @@ use taplo::{parser::Parse, util::coords::Mapper};
 use tower_lsp::lsp_types::ConfigurationItem;
 use tower_lsp::{lsp_types::*, Client};
 
-#[serde(rename_all = "camelCase")]
 #[derive(Debug, Clone, Deserialize)]
+#[serde(rename_all = "camelCase")]
 pub struct Config {
     pub incorrect_file_autofixes: bool,
 }

crates/rslint_lsp/src/provider/toml_completion.rs

@@ -318,7 +318,7 @@ pub(crate) fn toml_completions(
                                     None => None,
                                 }),
                             })
-                            .filter_map(|s| s)
+                            .flatten()
                             .map(|schema| {
                                 value_completions(
                                     &root_schema.definitions,
@@ -626,7 +626,7 @@ fn value_completions(
                     }
                 })
             })
-            .filter_map(|c| c)
+            .flatten()
             .collect();
     }
 

xtask/src/coverage/files.rs

@@ -128,7 +128,7 @@ pub fn get_test_files(query: Option<&str>, pool: &Pool) -> Vec<TestFile> {
                     let code = read_to_string(entry.path()).ok()?;
                     let meta = read_metadata(&code).ok()?;
                     let path = entry.into_path();
-                    Some(TestFile { code, meta, path }).filter(|file| file.meta.features.is_empty())
+                    Some(TestFile { meta, code, path }).filter(|file| file.meta.features.is_empty())
                 }
 
                 if let Some(file) = parse_file(file) {

xtask/src/docgen/extract.rs

@@ -248,6 +248,6 @@ impl Parse for Example {
         let docstring = parse_docstring(&input);
         let string = input.parse::<LitStr>()?.value();
         let source = unindent(&string).trim().to_string();
-        Ok(Example { docstring, source })
+        Ok(Example { source, docstring })
     }
 }