Activate non-default lints once for the entire workspace

Using the trick documented here:
EmbarkStudios/rust-ecosystem#22 (comment)

Author: DmitrySamoylov

.cargo/config.toml

@@ -1,2 +1,17 @@
 [alias]
 xtask = "run --package xtask --"
+
+[target.'cfg(all())']
+rustflags = [
+    "-Wrust_2018_idioms",
+    "-Wunused_qualifications",
+    "-Wclippy::cloned_instead_of_copied",
+    "-Wclippy::dbg_macro",
+    "-Wclippy::disallowed_method",
+    "-Wclippy::disallowed_type",
+    "-Wclippy::str_to_string",
+    "-Wclippy::todo",
+    "-Wclippy::unreadable_literal",
+    "-Wclippy::unseparated_literal_suffix",
+    "-Wclippy::wildcard_imports",
+]

lumeo_api_client/src/apps.rs

@@ -19,11 +19,11 @@ pub struct Application {
 impl Client {
     pub async fn get_app(&self, app_id: &Uuid) -> Result<Application> {
         let path = format!("/v1/apps/{}", app_id);
-        self.get(&path, Option::<&()>::None).await
+        self.get(&path, None::<&()>).await
     }
 
     pub async fn get_apps(&self, org_id: &Uuid) -> Result<Vec<Application>> {
         let path = format!("/v1/orgs/{}/apps", org_id);
-        self.get(&path, Option::<&()>::None).await
+        self.get(&path, None::<&()>).await
     }
 }

lumeo_api_client/src/deployments.rs

@@ -134,7 +134,7 @@ where
     impl<'de> Visitor<'de> for PipelineVisitor {
         type Value = Pipeline;
 
-        fn expecting(&self, f: &mut fmt::Formatter) -> fmt::Result {
+        fn expecting(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
             write!(f, "a possibly-stringified pipeline definition")
         }
 

lumeo_api_client/src/orgs.rs

@@ -18,6 +18,6 @@ pub struct Organization {
 
 impl Client {
     pub async fn get_orgs(&self) -> Result<Vec<Organization>> {
-        self.get("/v1/orgs", Option::<&()>::None).await
+        self.get("/v1/orgs", None::<&()>).await
     }
 }