[bugfix] Return useful err on server start failure (#3879)

* [bugfix] Return useful err on `server start` failure

* remove scheduler started func

* remove tryUntil

internal/cache/cache.go

@@ -23,6 +23,7 @@ import (
 	"codeberg.org/gruf/go-cache/v3/ttl"
 	"github.com/superseriousbusiness/gotosocial/internal/cache/headerfilter"
 	"github.com/superseriousbusiness/gotosocial/internal/config"
+	"github.com/superseriousbusiness/gotosocial/internal/gtserror"
 	"github.com/superseriousbusiness/gotosocial/internal/log"
 )
 
@@ -125,16 +126,18 @@ func (c *Caches) Init() {
 
 // Start will start any caches that require a background
 // routine, which usually means any kind of TTL caches.
-func (c *Caches) Start() {
+func (c *Caches) Start() error {
 	log.Infof(nil, "start: %p", c)
 
-	tryUntil("starting webfinger cache", 5, func() bool {
-		return c.Webfinger.Start(5 * time.Minute)
-	})
+	if !c.Webfinger.Start(5 * time.Minute) {
+		return gtserror.New("could not start webfinger cache")
+	}
 
-	tryUntil("starting statusesFilterableFields cache", 5, func() bool {
-		return c.StatusesFilterableFields.Start(5 * time.Minute)
-	})
+	if !c.StatusesFilterableFields.Start(5 * time.Minute) {
+		return gtserror.New("could not start statusesFilterableFields cache")
+	}
+
+	return nil
 }
 
 // Stop will stop any caches that require a background
@@ -142,8 +145,8 @@ func (c *Caches) Start() {
 func (c *Caches) Stop() {
 	log.Infof(nil, "stop: %p", c)
 
-	tryUntil("stopping webfinger cache", 5, c.Webfinger.Stop)
-	tryUntil("stopping statusesFilterableFields cache", 5, c.StatusesFilterableFields.Stop)
+	_ = c.Webfinger.Stop()
+	_ = c.StatusesFilterableFields.Stop()
 }
 
 // Sweep will sweep all the available caches to ensure none