diff --git a/src/main/java/com/google/devtools/build/lib/actions/LocalHostResourceManagerLinux.java b/src/main/java/com/google/devtools/build/lib/actions/LocalHostResourceManagerLinux.java
index 19d0208dd256fd..e9e5a2f9a1138b 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/LocalHostResourceManagerLinux.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/LocalHostResourceManagerLinux.java
@@ -64,7 +64,7 @@ private static String getCpuInfoContent() throws IOException {
   }
 
   private static String readContent(String filename) throws IOException {
-    return Files.toString(new File(filename), Charset.defaultCharset());
+    return Files.asCharSource(new File(filename), Charset.defaultCharset()).read();
   }
 
   /**
diff --git a/src/main/java/com/google/devtools/build/lib/util/ResourceUsage.java b/src/main/java/com/google/devtools/build/lib/util/ResourceUsage.java
index 0360f3bf2ac295..a69040d36125f3 100644
--- a/src/main/java/com/google/devtools/build/lib/util/ResourceUsage.java
+++ b/src/main/java/com/google/devtools/build/lib/util/ResourceUsage.java
@@ -20,9 +20,7 @@
 import com.google.common.base.Splitter;
 import com.google.common.collect.Iterables;
 import com.google.common.io.Files;
-
 import com.sun.management.OperatingSystemMXBean;
-
 import java.io.File;
 import java.io.IOException;
 import java.lang.management.ManagementFactory;
@@ -181,7 +179,7 @@ public static Measurement measureCurrentResourceUsage(String processId) {
   private static long getCurrentTotalIdleTimeInJiffies() {
     try {
       File file = new File("/proc/stat");
-      String content = Files.toString(file, US_ASCII);
+      String content = Files.asCharSource(file, US_ASCII).read();
       String value = Iterables.get(WHITESPACE_SPLITTER.split(content), 5);
       return Long.parseLong(value);
     } catch (NumberFormatException | IOException e) {
@@ -205,8 +203,8 @@ private static long[] getCurrentCpuUtilizationInJiffies(String processId) {
       if (file.isDirectory()) {
         return new long[2];
       }
-      Iterator<String> stat = WHITESPACE_SPLITTER.split(
-          Files.toString(file, US_ASCII)).iterator();
+      Iterator<String> stat =
+          WHITESPACE_SPLITTER.split(Files.asCharSource(file, US_ASCII).read()).iterator();
       for (int i = 0; i < 13; ++i) {
         stat.next();
       }