fix some lint warnings

also reduce the use of conditional imports

src/auth/login_provider.rs

@@ -1,4 +1,3 @@
-use log::warn;
 use serde::{Deserialize, Serialize};
 
 use crate::auth::login_provider::ldap::LdapLoginProviderConfig;
@@ -43,7 +42,7 @@ impl LoginProviderConfig {
             LoginProviderConfig::Disabled => Ok(None),
             #[cfg(feature = "dev_mode")]
             LoginProviderConfig::Development => {
-                warn!("Using dev-login provider!");
+                log::warn!("Using dev-login provider!");
                 Ok(Some(User {
                     name: user_name.to_owned(),
                 }))

src/main.rs

@@ -13,8 +13,6 @@ use actix_web::middleware::{ErrorHandlers, NormalizePath, TrailingSlash};
 use actix_web::{get, web, App, HttpServer};
 use handlebars::Handlebars;
 use listenfd::ListenFd;
-#[cfg(feature = "dev_mode")]
-use log::info;
 use log::{error, LevelFilter, SetLoggerError};
 use route::error_handler;
 
@@ -28,8 +26,6 @@ mod util;
 
 // internal imports
 use crate::job_offers::{JobOffers, SubmissionLimiter};
-#[cfg(feature = "dev_mode")]
-use crate::server_config::OperationMode;
 use crate::server_config::ServerConfig;
 
 // For reference see:  https://doc.rust-lang.org/cargo/reference/environment-variables.html#environment-variables-cargo-sets-for-crates
@@ -71,10 +67,12 @@ async fn run() -> Result<(), error::SeverInitializationError> {
     let job_offers = JobOffers::init_new(&server_config).await?;
 
     hb.set_strict_mode(true);
+
     #[cfg(feature = "dev_mode")]
     {
-        info!("{:?}", server_config.args);
+        use crate::server_config::OperationMode;
-        info!("{:?}", server_config.config);
+        log::info!("{:?}", server_config.args);
+        log::info!("{:?}", server_config.config);
         hb.set_dev_mode(matches!(
             server_config.args.mode,
             OperationMode::Development

src/template.rs

@@ -8,4 +8,4 @@ pub(crate) const JOBOFFER_REJECT_SUBMISSION_SUCCESS: &str = "job_offer/submissio
 pub(crate) const AUTH_LOGIN: &str = "auth/login";
 pub(crate) const LICENCES: &str = "licenses";
 
-pub const EMAIL_PLAIN: &'static str = "email/plaintext";
+pub const EMAIL_PLAIN: &str = "email/plaintext";