Use Go 1.13 error features

* Use `errors.Is()` for unwrapping errors.
* Use `%w` error verb in internal error formatting.

Signed-off-by: Ben Kochie <superq@gmail.com>

1 files changed, 1 insertions, 1 deletions

diff --git a/collector/loadavg_linux.go b/collector/loadavg_linux.go
index 668d3ed..7b89668 100644
--- a/collector/loadavg_linux.go
+++ b/collector/loadavg_linux.go
@@ -45,7 +45,7 @@ func parseLoad(data string) (loads []float64, err error) {
         for i, load := range parts[0:3] {
                 loads[i], err = strconv.ParseFloat(load, 64)
                 if err != nil {
-                        return nil, fmt.Errorf("could not parse load '%s': %s", load, err)
+                        return nil, fmt.Errorf("could not parse load '%s': %w", load, err)
                 }
         }
         return loads, nil