add log::SetLoggerError behind feature flag

Cargo.toml

@@ -9,6 +9,7 @@ keywords = ["error", "result"]
 
 [dependencies]
 askama = { version = "0.12", optional = true }
+log = { version = "0.4", features = ["std"], optional = true }
 serde_json = { version = "1.0", optional = true }
 ureq = { version = "2.6", optional = true }
 

src/lib.rs

@@ -76,6 +76,13 @@ impl From<askama::Error> for Rear {
 	}
 }
 
+#[cfg(feature = "log")]
+impl From<log::SetLoggerError> for Rear {
+	fn from(error: log::SetLoggerError) -> Self {
+		Self { message: error.to_string(), error: error.into() }
+	}
+}
+
 #[cfg(feature = "serde_json")]
 impl From<serde_json::Error> for Rear {
 	fn from(error: serde_json::Error) -> Self {