Upgrade gopls to 0.16.1

Author: bstaletic

build.py

@@ -960,7 +960,7 @@ def EnableGoCompleter( args ):
   new_env.pop( 'GOROOT', None )
   new_env[ 'GOBIN' ] = p.join( new_env[ 'GOPATH' ], 'bin' )
 
-  gopls = 'golang.org/x/tools/gopls@v0.15.3'
+  gopls = 'golang.org/x/tools/gopls@v0.16.1'
   CheckCall( [ go, 'install', gopls ],
              env = new_env,
              quiet = args.quiet,

ycmd/tests/go/subcommands_test.py

@@ -434,6 +434,9 @@ def test_Subcommands_GoToImplementation( self, app ):
         RunGoToTest( app, 'GoToImplementation', test )
 
 
+  @ExpectedFailure(
+    'Gopls bug. See https://github.com/golang/go/issues/68904',
+    matches_regexp( 'Browse free symbols' ) )
   @SharedYcmd
   def test_Subcommands_FixIt_NullResponse( self, app ):
     filepath = PathToTestFile( 'td', 'test.go' )
@@ -442,6 +445,9 @@ def test_Subcommands_FixIt_NullResponse( self, app ):
                   filepath, 1, 1, has_entry( 'fixits', empty() ) )
 
 
+  @ExpectedFailure(
+    'Gopls bug. See https://github.com/golang/go/issues/68904',
+    matches_regexp( 'Browse free symbols' ) )
   @SharedYcmd
   def test_Subcommands_FixIt_Simple( self, app ):
     filepath = PathToTestFile( 'fixit.go' )