Remove juju/errors

stats/stats.go

@@ -2,11 +2,10 @@ package stats
 
 import (
 	"context"
+	"fmt"
 	"net"
 	"net/http"
 
-	"github.com/juju/errors"
-
 	"github.com/9seconds/mtg/config"
 	"github.com/9seconds/mtg/conntypes"
 )
@@ -66,21 +65,21 @@ func Init(ctx context.Context) error {
 	instanceJSON := newStatsJSON(mux)
 	instancePrometheus, err := newStatsPrometheus(mux)
 	if err != nil {
-		return errors.Annotate(err, "Cannot initialize Prometheus")
+		return fmt.Errorf("cannot initialize prometheus: %w", err)
 	}
 
 	stats := []Stats{instanceJSON, instancePrometheus}
 	if config.C.StatsdStats.Addr.IP != nil {
 		instanceStatsd, err := newStatsStatsd()
 		if err != nil {
-			return errors.Annotate(err, "Cannot initialize StatsD")
+			return fmt.Errorf("cannot inialize statsd: %w", err)
 		}
 		stats = append(stats, instanceStatsd)
 	}
 
 	listener, err := net.Listen("tcp", config.C.StatsAddr.String())
 	if err != nil {
-		return errors.Annotate(err, "Cannot initialize stats server")
+		return fmt.Errorf("cannot initialize stats server: %w", err)
 	}
 
 	srv := http.Server{

stats/stats_prometheus.go

@@ -1,10 +1,10 @@
 package stats
 
 import (
+	"fmt"
 	"net"
 	"net/http"
 
-	"github.com/juju/errors"
 	"github.com/prometheus/client_golang/prometheus"
 	"github.com/prometheus/client_golang/prometheus/promhttp"
 
@@ -91,16 +91,16 @@ func newStatsPrometheus(mux *http.ServeMux) (Stats, error) {
 	}
 
 	if err := registry.Register(instance.connections); err != nil {
-		return nil, errors.Annotate(err, "Cannot register metrics for connections")
+		return nil, fmt.Errorf("cannot register metrics for connections: %w", err)
 	}
 	if err := registry.Register(instance.traffic); err != nil {
-		return nil, errors.Annotate(err, "Cannot register metrics for traffic")
+		return nil, fmt.Errorf("cannot register metrics for traffic: %w", err)
 	}
 	if err := registry.Register(instance.crashes); err != nil {
-		return nil, errors.Annotate(err, "Cannot register metrics for crashes")
+		return nil, fmt.Errorf("cannot register metrics for crashes: %w", err)
 	}
 	if err := registry.Register(instance.antiReplays); err != nil {
-		return nil, errors.Annotate(err, "Cannot register metrics for anti replays")
+		return nil, fmt.Errorf("cannot register metrics for anti replays: %w", err)
 	}
 
 	handler := promhttp.HandlerFor(registry, promhttp.HandlerOpts{})

stats/stats_statsd.go

@@ -1,10 +1,10 @@
 package stats
 
 import (
+	"fmt"
 	"net"
 	"strings"
 
-	"github.com/juju/errors"
 	"gopkg.in/alexcesaro/statsd.v2"
 
 	"github.com/9seconds/mtg/config"
@@ -78,7 +78,7 @@ func newStatsStatsd() (Stats, error) {
 
 	client, err := statsd.New(options...)
 	if err != nil {
-		return nil, errors.Annotate(err, "Cannot initialize a client")
+		return nil, fmt.Errorf("cannot initialize a client: %w", err)
 	}
 
 	return &statsStatsd{