Use github.com/pkg/errors

pgtype/macaddr.go

@@ -2,8 +2,9 @@ package pgtype
 
 import (
 	"database/sql/driver"
-	"fmt"
 	"net"
+
+	"github.com/pkg/errors"
 )
 
 type Macaddr struct {
@@ -32,7 +33,7 @@ func (dst *Macaddr) Set(src interface{}) error {
 		if originalSrc, ok := underlyingPtrType(src); ok {
 			return dst.Set(originalSrc)
 		}
-		return fmt.Errorf("cannot convert %v to Macaddr", value)
+		return errors.Errorf("cannot convert %v to Macaddr", value)
 	}
 
 	return nil
@@ -69,7 +70,7 @@ func (src *Macaddr) AssignTo(dst interface{}) error {
 		return NullAssignTo(dst)
 	}
 
-	return fmt.Errorf("cannot decode %v into %T", src, dst)
+	return errors.Errorf("cannot decode %v into %T", src, dst)
 }
 
 func (dst *Macaddr) DecodeText(ci *ConnInfo, src []byte) error {
@@ -94,7 +95,7 @@ func (dst *Macaddr) DecodeBinary(ci *ConnInfo, src []byte) error {
 	}
 
 	if len(src) != 6 {
-		return fmt.Errorf("Received an invalid size for a macaddr: %d", len(src))
+		return errors.Errorf("Received an invalid size for a macaddr: %d", len(src))
 	}
 
 	addr := make(net.HardwareAddr, 6)
@@ -144,7 +145,7 @@ func (dst *Macaddr) Scan(src interface{}) error {
 		return dst.DecodeText(nil, srcCopy)
 	}
 
-	return fmt.Errorf("cannot scan %T", src)
+	return errors.Errorf("cannot scan %T", src)
 }
 
 // Value implements the database/sql/driver Valuer interface.