Fixes #130. Any warning or error from gopsutil was preventing any tem…

…ps from being displayed, even if some had useful data.

devices/cpu_linux.go

@@ -2,6 +2,7 @@
 
 package devices
 
+// TODO gopsutil is at v3, and we're using v2. See if v3 is released and upgrade if so.
 import "github.com/shirou/gopsutil/cpu"
 
 func CpuCount() (int, error) {

devices/temp_linux.go

@@ -3,6 +3,7 @@
 package devices
 
 import (
+	"log"
 	"strings"
 
 	"github.com/shirou/gopsutil/host"
@@ -15,8 +16,11 @@ func devs() []string {
 	}
 	sensors, err := host.SensorsTemperatures()
 	if err != nil {
-		// FIXME report the error
-		return []string{}
+		log.Printf("gopsutil reports %s", err)
+		if len(sensors) == 0 {
+			log.Printf("no temperature sensors returned")
+			return []string{}
+		}
 	}
 	rv := make([]string, 0, len(sensors))
 	for _, sensor := range sensors {