Perhaps doing ownership right?

src/main.rs

@@ -25,8 +25,8 @@ mod signalk;
 mod vesseldata;
 use vesseldata::VesselDataEventSource;
 
-pub struct HelmsDisplay {
-  font: Font<'static>,
+pub struct HelmsDisplay<'a> {
+  font: Font<'a>,
   boat: forms::Form,
   compassrose: forms::Form,
   cog: forms::Form,
@@ -36,9 +36,9 @@ pub struct HelmsDisplay {
   course_screen: forms::Screen,
 }
 
-impl HelmsDisplay {
+impl<'a> HelmsDisplay<'a> {
 
-  pub fn new() -> HelmsDisplay {
+  pub fn new() -> HelmsDisplay<'a> {
     // in the future, this method should probably take some sort of
     // configuration object.
     let mut loader = forms::Loader::new("/root/helms-display".to_string());