Replace all usages of Blaze's Preconditions class with guava.

Blaze had its own class to avoid GC from varargs array creation for the precondition happy path. Guava now (mostly) implements these, making it unnecessary to maintain our own.

This change was almost entirely automated by search-and-replace. A few BUILD files needed fixing up since I removed an export of preconditions from lib:util, which was all done by add_deps. There was one incorrect usage of Preconditions that was caught by error prone (which checks Guava's version of Preconditions) that I had to change manually.

PiperOrigin-RevId: 175033526

26 files changed, 26 insertions, 29 deletions

diff --git a/src/main/java/com/google/devtools/build/lib/actions/AbstractAction.java b/src/main/java/com/google/devtools/build/lib/actions/AbstractAction.java
index 0ace01b68b..edc49ee2d1 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/AbstractAction.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/AbstractAction.java
@@ -14,6 +14,7 @@
 
 package com.google.devtools.build.lib.actions;
 
+import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Iterables;
@@ -35,7 +36,6 @@ import com.google.devtools.build.lib.skylarkinterface.SkylarkValue;
 import com.google.devtools.build.lib.syntax.SkylarkDict;
 import com.google.devtools.build.lib.syntax.SkylarkList;
 import com.google.devtools.build.lib.syntax.SkylarkNestedSet;
-import com.google.devtools.build.lib.util.Preconditions;
 import com.google.devtools.build.lib.vfs.FileSystem;
 import com.google.devtools.build.lib.vfs.FileSystemUtils;
 import com.google.devtools.build.lib.vfs.Path;
diff --git a/src/main/java/com/google/devtools/build/lib/actions/ActionCacheChecker.java b/src/main/java/com/google/devtools/build/lib/actions/ActionCacheChecker.java
index fc64c7561f..8a49c9c40c 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/ActionCacheChecker.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/ActionCacheChecker.java
@@ -14,6 +14,7 @@
 package com.google.devtools.build.lib.actions;
 
 import com.google.auto.value.AutoValue;
+import com.google.common.base.Preconditions;
 import com.google.common.base.Predicate;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
@@ -28,7 +29,6 @@ import com.google.devtools.build.lib.actions.cache.Protos.ActionCacheStatistics.
 import com.google.devtools.build.lib.events.Event;
 import com.google.devtools.build.lib.events.EventHandler;
 import com.google.devtools.build.lib.events.EventKind;
-import com.google.devtools.build.lib.util.Preconditions;
 import com.google.devtools.build.lib.vfs.PathFragment;
 import java.io.IOException;
 import java.util.ArrayList;
diff --git a/src/main/java/com/google/devtools/build/lib/actions/ActionExecutedEvent.java b/src/main/java/com/google/devtools/build/lib/actions/ActionExecutedEvent.java
index 1ce6bce6d0..ca87443bc2 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/ActionExecutedEvent.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/ActionExecutedEvent.java
@@ -15,6 +15,7 @@
 package com.google.devtools.build.lib.actions;
 
 import com.google.common.base.MoreObjects;
+import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
 import com.google.devtools.build.lib.buildeventstream.BuildEvent;
 import com.google.devtools.build.lib.buildeventstream.BuildEventConverters;
@@ -24,7 +25,6 @@ import com.google.devtools.build.lib.buildeventstream.BuildEventWithConfiguratio
 import com.google.devtools.build.lib.buildeventstream.GenericBuildEvent;
 import com.google.devtools.build.lib.buildeventstream.NullConfiguration;
 import com.google.devtools.build.lib.buildeventstream.PathConverter;
-import com.google.devtools.build.lib.util.Preconditions;
 import com.google.devtools.build.lib.vfs.Path;
 import java.util.Collection;
 
diff --git a/src/main/java/com/google/devtools/build/lib/actions/ActionExecutionContext.java b/src/main/java/com/google/devtools/build/lib/actions/ActionExecutionContext.java
index 9898b658a7..fc8a6bfb47 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/ActionExecutionContext.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/ActionExecutionContext.java
@@ -14,6 +14,7 @@
 
 package com.google.devtools.build.lib.actions;
 
+import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.eventbus.EventBus;
 import com.google.devtools.build.lib.actions.Artifact.ArtifactExpander;
@@ -23,7 +24,6 @@ import com.google.devtools.build.lib.cmdline.Label;
 import com.google.devtools.build.lib.events.Event;
 import com.google.devtools.build.lib.events.EventHandler;
 import com.google.devtools.build.lib.events.EventKind;
-import com.google.devtools.build.lib.util.Preconditions;
 import com.google.devtools.build.lib.util.io.FileOutErr;
 import com.google.devtools.build.lib.vfs.FileSystem;
 import com.google.devtools.build.lib.vfs.Path;
diff --git a/src/main/java/com/google/devtools/build/lib/actions/ActionExecutionStatusReporter.java b/src/main/java/com/google/devtools/build/lib/actions/ActionExecutionStatusReporter.java
index 362b891013..5818c1e425 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/ActionExecutionStatusReporter.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/ActionExecutionStatusReporter.java
@@ -16,6 +16,7 @@ package com.google.devtools.build.lib.actions;
 import static java.util.Comparator.comparing;
 
 import com.google.common.annotations.VisibleForTesting;
+import com.google.common.base.Preconditions;
 import com.google.common.eventbus.EventBus;
 import com.google.common.eventbus.Subscribe;
 import com.google.devtools.build.lib.clock.BlazeClock;
@@ -24,7 +25,6 @@ import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadSafe;
 import com.google.devtools.build.lib.events.Event;
 import com.google.devtools.build.lib.events.EventHandler;
 import com.google.devtools.build.lib.util.Pair;
-import com.google.devtools.build.lib.util.Preconditions;
 import java.util.ArrayList;
 import java.util.Collections;
 import java.util.HashMap;
diff --git a/src/main/java/com/google/devtools/build/lib/actions/ActionInputHelper.java b/src/main/java/com/google/devtools/build/lib/actions/ActionInputHelper.java
index 1a19d281d3..49e262fcee 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/ActionInputHelper.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/ActionInputHelper.java
@@ -17,12 +17,12 @@ package com.google.devtools.build.lib.actions;
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Function;
 import com.google.common.base.Functions;
+import com.google.common.base.Preconditions;
 import com.google.common.collect.Collections2;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Iterables;
 import com.google.devtools.build.lib.actions.Artifact.ArtifactExpander;
 import com.google.devtools.build.lib.actions.Artifact.TreeFileArtifact;
-import com.google.devtools.build.lib.util.Preconditions;
 import com.google.devtools.build.lib.vfs.PathFragment;
 import java.util.ArrayList;
 import java.util.Collection;
diff --git a/src/main/java/com/google/devtools/build/lib/actions/ActionLookupData.java b/src/main/java/com/google/devtools/build/lib/actions/ActionLookupData.java
index fea6d6d357..7c46b63bb0 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/ActionLookupData.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/ActionLookupData.java
@@ -14,8 +14,8 @@
 package com.google.devtools.build.lib.actions;
 
 import com.google.common.base.MoreObjects;
+import com.google.common.base.Preconditions;
 import com.google.devtools.build.lib.cmdline.Label;
-import com.google.devtools.build.lib.util.Preconditions;
 import com.google.devtools.build.skyframe.SkyKey;
 
 /** Data that uniquely identifies an action. */
diff --git a/src/main/java/com/google/devtools/build/lib/actions/ActionLookupValue.java b/src/main/java/com/google/devtools/build/lib/actions/ActionLookupValue.java
index 6b07feec64..bf6e3a0099 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/ActionLookupValue.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/ActionLookupValue.java
@@ -16,13 +16,13 @@ package com.google.devtools.build.lib.actions;
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.MoreObjects;
 import com.google.common.base.MoreObjects.ToStringHelper;
+import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Maps;
 import com.google.devtools.build.lib.actions.MutableActionGraph.ActionConflictException;
 import com.google.devtools.build.lib.cmdline.Label;
 import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadSafe;
-import com.google.devtools.build.lib.util.Preconditions;
 import com.google.devtools.build.skyframe.LegacySkyKey;
 import com.google.devtools.build.skyframe.SkyFunctionName;
 import com.google.devtools.build.skyframe.SkyKey;
diff --git a/src/main/java/com/google/devtools/build/lib/actions/ActionMiddlemanEvent.java b/src/main/java/com/google/devtools/build/lib/actions/ActionMiddlemanEvent.java
index 563695cc65..df064d8cfb 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/ActionMiddlemanEvent.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/ActionMiddlemanEvent.java
@@ -13,7 +13,7 @@
 // limitations under the License.
 package com.google.devtools.build.lib.actions;
 
-import com.google.devtools.build.lib.util.Preconditions;
+import com.google.common.base.Preconditions;
 
 /**
  * This event is fired during the build, when a middleman action is executed. Middleman actions
diff --git a/src/main/java/com/google/devtools/build/lib/actions/ActionOwner.java b/src/main/java/com/google/devtools/build/lib/actions/ActionOwner.java
index b8c0dc883f..864e68a8f7 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/ActionOwner.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/ActionOwner.java
@@ -14,13 +14,13 @@
 package com.google.devtools.build.lib.actions;
 
 import com.google.auto.value.AutoValue;
+import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
 import com.google.devtools.build.lib.buildeventstream.BuildEvent;
 import com.google.devtools.build.lib.cmdline.Label;
 import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
 import com.google.devtools.build.lib.events.Location;
 import com.google.devtools.build.lib.packages.AspectDescriptor;
-import com.google.devtools.build.lib.util.Preconditions;
 import javax.annotation.Nullable;
 
 /**
diff --git a/src/main/java/com/google/devtools/build/lib/actions/Actions.java b/src/main/java/com/google/devtools/build/lib/actions/Actions.java
index b53a683b80..4acd7fefd7 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/Actions.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/Actions.java
@@ -15,6 +15,7 @@
 package com.google.devtools.build.lib.actions;
 
 import com.google.common.annotations.VisibleForTesting;
+import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Iterables;
 import com.google.common.escape.Escaper;
@@ -22,7 +23,6 @@ import com.google.common.escape.Escapers;
 import com.google.devtools.build.lib.actions.MutableActionGraph.ActionConflictException;
 import com.google.devtools.build.lib.cmdline.Label;
 import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadSafe;
-import com.google.devtools.build.lib.util.Preconditions;
 import com.google.devtools.build.lib.vfs.PathFragment;
 import java.util.HashMap;
 import java.util.Iterator;
diff --git a/src/main/java/com/google/devtools/build/lib/actions/Artifact.java b/src/main/java/com/google/devtools/build/lib/actions/Artifact.java
index 9383a45405..dc5e46efdc 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/Artifact.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/Artifact.java
@@ -21,6 +21,7 @@ import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Function;
 import com.google.common.base.Functions;
 import com.google.common.base.Joiner;
+import com.google.common.base.Preconditions;
 import com.google.common.base.Predicate;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Iterables;
@@ -37,7 +38,6 @@ import com.google.devtools.build.lib.skylarkinterface.SkylarkValue;
 import com.google.devtools.build.lib.syntax.EvalUtils;
 import com.google.devtools.build.lib.syntax.EvalUtils.ComparisonException;
 import com.google.devtools.build.lib.util.FileType;
-import com.google.devtools.build.lib.util.Preconditions;
 import com.google.devtools.build.lib.vfs.Path;
 import com.google.devtools.build.lib.vfs.PathFragment;
 import java.util.ArrayList;
diff --git a/src/main/java/com/google/devtools/build/lib/actions/ArtifactFactory.java b/src/main/java/com/google/devtools/build/lib/actions/ArtifactFactory.java
index 89dc281fae..58eaf70e14 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/ArtifactFactory.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/ArtifactFactory.java
@@ -14,13 +14,13 @@
 package com.google.devtools.build.lib.actions;
 
 import com.google.common.annotations.VisibleForTesting;
+import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
 import com.google.devtools.build.lib.actions.Artifact.SpecialArtifactType;
 import com.google.devtools.build.lib.cmdline.PackageIdentifier;
 import com.google.devtools.build.lib.cmdline.RepositoryName;
 import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadSafe;
 import com.google.devtools.build.lib.util.Pair;
-import com.google.devtools.build.lib.util.Preconditions;
 import com.google.devtools.build.lib.vfs.Path;
 import com.google.devtools.build.lib.vfs.PathFragment;
 import java.util.ArrayList;
diff --git a/src/main/java/com/google/devtools/build/lib/actions/ConcurrentMultimapWithHeadElement.java b/src/main/java/com/google/devtools/build/lib/actions/ConcurrentMultimapWithHeadElement.java
index 10eb006e86..c5440411c3 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/ConcurrentMultimapWithHeadElement.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/ConcurrentMultimapWithHeadElement.java
@@ -13,11 +13,11 @@
 // limitations under the License.
 package com.google.devtools.build.lib.actions;
 
+import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Maps;
 import com.google.common.collect.Sets;
 import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadHostile;
-import com.google.devtools.build.lib.util.Preconditions;
 import java.util.Iterator;
 import java.util.Set;
 import java.util.concurrent.ConcurrentMap;
diff --git a/src/main/java/com/google/devtools/build/lib/actions/ExecutionRequirements.java b/src/main/java/com/google/devtools/build/lib/actions/ExecutionRequirements.java
index a07af7b558..22242de04c 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/ExecutionRequirements.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/ExecutionRequirements.java
@@ -16,8 +16,8 @@ package com.google.devtools.build.lib.actions;
 
 import com.google.auto.value.AutoValue;
 import com.google.common.base.Function;
+import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableMap;
-import com.google.devtools.build.lib.util.Preconditions;
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
diff --git a/src/main/java/com/google/devtools/build/lib/actions/FilesetOutputSymlink.java b/src/main/java/com/google/devtools/build/lib/actions/FilesetOutputSymlink.java
index 33c213414a..92cf7a975f 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/FilesetOutputSymlink.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/FilesetOutputSymlink.java
@@ -15,7 +15,7 @@ package com.google.devtools.build.lib.actions;
 
 import com.google.common.annotations.VisibleForTesting;
 import com.google.common.base.Objects;
-import com.google.devtools.build.lib.util.Preconditions;
+import com.google.common.base.Preconditions;
 import com.google.devtools.build.lib.vfs.PathFragment;
 
 /** Definition of a symlink in the output tree of a Fileset rule. */
diff --git a/src/main/java/com/google/devtools/build/lib/actions/FilesetTraversalParamsFactory.java b/src/main/java/com/google/devtools/build/lib/actions/FilesetTraversalParamsFactory.java
index 5277badbce..544f09f6c0 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/FilesetTraversalParamsFactory.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/FilesetTraversalParamsFactory.java
@@ -16,6 +16,7 @@ package com.google.devtools.build.lib.actions;
 import com.google.auto.value.AutoValue;
 import com.google.auto.value.extension.memoized.Memoized;
 import com.google.common.base.Optional;
+import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableSet;
 import com.google.common.collect.Iterables;
@@ -25,7 +26,6 @@ import com.google.devtools.build.lib.actions.FilesetTraversalParams.PackageBound
 import com.google.devtools.build.lib.cmdline.Label;
 import com.google.devtools.build.lib.packages.FilesetEntry.SymlinkBehavior;
 import com.google.devtools.build.lib.util.Fingerprint;
-import com.google.devtools.build.lib.util.Preconditions;
 import com.google.devtools.build.lib.vfs.PathFragment;
 import java.util.Set;
 import javax.annotation.Nullable;
diff --git a/src/main/java/com/google/devtools/build/lib/actions/MapBasedActionGraph.java b/src/main/java/com/google/devtools/build/lib/actions/MapBasedActionGraph.java
index 54d3411419..9b27881aa6 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/MapBasedActionGraph.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/MapBasedActionGraph.java
@@ -14,8 +14,7 @@
 
 package com.google.devtools.build.lib.actions;
 
-import com.google.devtools.build.lib.util.Preconditions;
-
+import com.google.common.base.Preconditions;
 import javax.annotation.Nullable;
 import javax.annotation.concurrent.ThreadSafe;
 
diff --git a/src/main/java/com/google/devtools/build/lib/actions/MiddlemanAction.java b/src/main/java/com/google/devtools/build/lib/actions/MiddlemanAction.java
index 6713032058..f0c5972c6a 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/MiddlemanAction.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/MiddlemanAction.java
@@ -13,10 +13,10 @@
 // limitations under the License.
 package com.google.devtools.build.lib.actions;
 
+import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
 import com.google.devtools.build.lib.cmdline.Label;
 import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
-import com.google.devtools.build.lib.util.Preconditions;
 
 /**
  * An action that depends on a set of inputs and creates a single output file whenever it
diff --git a/src/main/java/com/google/devtools/build/lib/actions/MiddlemanFactory.java b/src/main/java/com/google/devtools/build/lib/actions/MiddlemanFactory.java
index a50767c10a..5093344464 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/MiddlemanFactory.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/MiddlemanFactory.java
@@ -13,16 +13,14 @@
 // limitations under the License.
 package com.google.devtools.build.lib.actions;
 
+import com.google.common.base.Preconditions;
 import com.google.common.collect.Iterables;
 import com.google.devtools.build.lib.actions.ActionAnalysisMetadata.MiddlemanType;
 import com.google.devtools.build.lib.cmdline.Label;
 import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadSafe;
 import com.google.devtools.build.lib.util.Pair;
-import com.google.devtools.build.lib.util.Preconditions;
 import com.google.devtools.build.lib.vfs.PathFragment;
-
 import java.util.Iterator;
-
 import javax.annotation.Nullable;
 
 /**
diff --git a/src/main/java/com/google/devtools/build/lib/actions/ResourceManager.java b/src/main/java/com/google/devtools/build/lib/actions/ResourceManager.java
index 60863dc5bc..bd23215d21 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/ResourceManager.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/ResourceManager.java
@@ -17,11 +17,11 @@ package com.google.devtools.build.lib.actions;
 import static com.google.devtools.build.lib.profiler.AutoProfiler.profiled;
 
 import com.google.common.annotations.VisibleForTesting;
+import com.google.common.base.Preconditions;
 import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadSafe;
 import com.google.devtools.build.lib.profiler.AutoProfiler;
 import com.google.devtools.build.lib.profiler.ProfilerTask;
 import com.google.devtools.build.lib.util.Pair;
-import com.google.devtools.build.lib.util.Preconditions;
 import java.util.Iterator;
 import java.util.LinkedList;
 import java.util.List;
diff --git a/src/main/java/com/google/devtools/build/lib/actions/Root.java b/src/main/java/com/google/devtools/build/lib/actions/Root.java
index 1e133eb5ff..7cb16981cb 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/Root.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/Root.java
@@ -15,6 +15,7 @@
 package com.google.devtools.build.lib.actions;
 
 import com.google.common.annotations.VisibleForTesting;
+import com.google.common.base.Preconditions;
 import com.google.devtools.build.lib.cmdline.RepositoryName;
 import com.google.devtools.build.lib.concurrent.ThreadSafety.Immutable;
 import com.google.devtools.build.lib.skylarkinterface.SkylarkCallable;
@@ -22,7 +23,6 @@ import com.google.devtools.build.lib.skylarkinterface.SkylarkModule;
 import com.google.devtools.build.lib.skylarkinterface.SkylarkModuleCategory;
 import com.google.devtools.build.lib.skylarkinterface.SkylarkPrinter;
 import com.google.devtools.build.lib.skylarkinterface.SkylarkValue;
-import com.google.devtools.build.lib.util.Preconditions;
 import com.google.devtools.build.lib.vfs.Path;
 import com.google.devtools.build.lib.vfs.PathFragment;
 import java.io.Serializable;
diff --git a/src/main/java/com/google/devtools/build/lib/actions/cache/ActionCache.java b/src/main/java/com/google/devtools/build/lib/actions/cache/ActionCache.java
index fd1756a03c..e7747f4290 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/cache/ActionCache.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/cache/ActionCache.java
@@ -14,13 +14,13 @@
 
 package com.google.devtools.build.lib.actions.cache;
 
+import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.ImmutableMap;
 import com.google.common.collect.Lists;
 import com.google.devtools.build.lib.actions.cache.Protos.ActionCacheStatistics;
 import com.google.devtools.build.lib.actions.cache.Protos.ActionCacheStatistics.MissReason;
 import com.google.devtools.build.lib.concurrent.ThreadSafety.ThreadCompatible;
-import com.google.devtools.build.lib.util.Preconditions;
 import com.google.devtools.build.lib.vfs.PathFragment;
 import java.io.IOException;
 import java.io.PrintStream;
diff --git a/src/main/java/com/google/devtools/build/lib/actions/cache/CompactPersistentActionCache.java b/src/main/java/com/google/devtools/build/lib/actions/cache/CompactPersistentActionCache.java
index 52cca10a4e..948a76cf58 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/cache/CompactPersistentActionCache.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/cache/CompactPersistentActionCache.java
@@ -15,6 +15,7 @@ package com.google.devtools.build.lib.actions.cache;
 
 import static java.nio.charset.StandardCharsets.ISO_8859_1;
 
+import com.google.common.base.Preconditions;
 import com.google.common.collect.ImmutableList;
 import com.google.devtools.build.lib.actions.cache.Protos.ActionCacheStatistics;
 import com.google.devtools.build.lib.actions.cache.Protos.ActionCacheStatistics.MissReason;
@@ -23,7 +24,6 @@ import com.google.devtools.build.lib.concurrent.ThreadSafety.ConditionallyThread
 import com.google.devtools.build.lib.profiler.AutoProfiler;
 import com.google.devtools.build.lib.util.CompactStringIndexer;
 import com.google.devtools.build.lib.util.PersistentMap;
-import com.google.devtools.build.lib.util.Preconditions;
 import com.google.devtools.build.lib.util.StringIndexer;
 import com.google.devtools.build.lib.util.VarInt;
 import com.google.devtools.build.lib.vfs.Path;
diff --git a/src/main/java/com/google/devtools/build/lib/actions/cache/DigestUtils.java b/src/main/java/com/google/devtools/build/lib/actions/cache/DigestUtils.java
index 0481becd7f..1c5b1e35c8 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/cache/DigestUtils.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/cache/DigestUtils.java
@@ -13,6 +13,7 @@
 // limitations under the License.
 package com.google.devtools.build.lib.actions.cache;
 
+import com.google.common.base.Preconditions;
 import com.google.common.cache.Cache;
 import com.google.common.cache.CacheBuilder;
 import com.google.common.cache.CacheStats;
@@ -23,7 +24,6 @@ import com.google.devtools.build.lib.profiler.Profiler;
 import com.google.devtools.build.lib.profiler.ProfilerTask;
 import com.google.devtools.build.lib.util.Fingerprint;
 import com.google.devtools.build.lib.util.LoggingUtil;
-import com.google.devtools.build.lib.util.Preconditions;
 import com.google.devtools.build.lib.util.VarInt;
 import com.google.devtools.build.lib.vfs.FileStatus;
 import com.google.devtools.build.lib.vfs.Path;
diff --git a/src/main/java/com/google/devtools/build/lib/actions/cache/Md5Digest.java b/src/main/java/com/google/devtools/build/lib/actions/cache/Md5Digest.java
index 75441b52e7..11611ab60b 100644
--- a/src/main/java/com/google/devtools/build/lib/actions/cache/Md5Digest.java
+++ b/src/main/java/com/google/devtools/build/lib/actions/cache/Md5Digest.java
@@ -13,8 +13,8 @@
 // limitations under the License.
 package com.google.devtools.build.lib.actions.cache;
 
+import com.google.common.base.Preconditions;
 import com.google.common.hash.HashCode;
-import com.google.devtools.build.lib.util.Preconditions;
 import java.util.Arrays;
 
 /** A value class for capturing and comparing MD5-based digests. */