TermLogger: Flush each entry

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "simplelog"
-version = "0.10.1"
+version = "0.10.2"
 edition = "2018"
 authors = ["Drakulix <github@drakulix.de>"]
 description = "A simple and easy-to-use logging facility for Rust's log crate"

src/loggers/termlog.rs

@@ -159,7 +159,14 @@ impl TermLogger {
             write_location(record, term_lock)?;
         }
 
-        write_args(record, term_lock)
+        write_args(record, term_lock)?;
+
+        // The log crate holds the logger as a `static mut`, which isn't dropped
+        // at program exit: https://doc.rust-lang.org/reference/items/static-items.html
+        // Sadly, this means we can't rely on the BufferedStandardStreams flushing
+        // themselves on the way out, so to avoid the Case of the Missing 8k,
+        // flush each entry.
+        term_lock.flush()
     }
 
     fn try_log(&self, record: &Record<'_>) -> Result<(), Error> {