Remove xslog.NopLogger usage

go.mod

@@ -13,7 +13,7 @@ require (
 	buf.build/go/protovalidate v1.1.3
 	buf.build/go/protoyaml v0.6.0
 	buf.build/go/spdx v0.2.0
-	buf.build/go/standard v0.1.0
+	buf.build/go/standard v0.1.1-0.20260320140628-2996a887cf13
 	connectrpc.com/connect v1.19.1
 	connectrpc.com/otelconnect v0.9.0
 	github.com/bufbuild/protocompile v0.14.2-0.20260313233150-4b57e9e2a3ff

go.sum

@@ -24,8 +24,8 @@ buf.build/go/protoyaml v0.6.0 h1:Nzz1lvcXF8YgNZXk+voPPwdU8FjDPTUV4ndNTXN0n2w=
 buf.build/go/protoyaml v0.6.0/go.mod h1:RgUOsBu/GYKLDSIRgQXniXbNgFlGEZnQpRAUdLAFV2Q=
 buf.build/go/spdx v0.2.0 h1:IItqM0/cMxvFJJumcBuP8NrsIzMs/UYjp/6WSpq8LTw=
 buf.build/go/spdx v0.2.0/go.mod h1:bXdwQFem9Si3nsbNy8aJKGPoaPi5DKwdeEp5/ArZ6w8=
-buf.build/go/standard v0.1.0 h1:g98T9IyvAl0vS3Pq8iVk6Cvj2ZiFvoUJRtfyGa0120U=
-buf.build/go/standard v0.1.0/go.mod h1:PiqpHz/7ZFq+kqvYhc/SK3lxFIB9N/aiH2CFC2JHIQg=
+buf.build/go/standard v0.1.1-0.20260320140628-2996a887cf13 h1:DKqZWklTpM7sDtEc4in34sI8mGxTA5C8QS3TOTvxjtc=
+buf.build/go/standard v0.1.1-0.20260320140628-2996a887cf13/go.mod h1:PiqpHz/7ZFq+kqvYhc/SK3lxFIB9N/aiH2CFC2JHIQg=
 cel.dev/expr v0.25.1 h1:1KrZg61W6TWSxuNZ37Xy49ps13NUovb66QLprthtwi4=
 cel.dev/expr v0.25.1/go.mod h1:hrXvqGP6G6gyx8UAHSHJ5RGk//1Oj5nXQ2NI02Nrsg4=
 connectrpc.com/connect v1.19.1 h1:R5M57z05+90EfEvCY1b7hBxDVOUl45PrtXtAV2fOC14=

private/buf/bufstudioagent/bufstudioagent_test.go

@@ -21,14 +21,14 @@ import (
 	"encoding/base64"
 	"errors"
 	"io"
+	"log/slog"
 	"net"
 	"net/http"
 	"net/http/httptest"
 	"strconv"
 	"testing"
 	"time"
 
-	"buf.build/go/standard/xlog/xslog"
 	"connectrpc.com/connect"
 	studiov1alpha1 "github.com/bufbuild/buf/private/gen/proto/go/buf/alpha/studio/v1alpha1"
 	"github.com/bufbuild/buf/private/pkg/protoencoding"
@@ -138,7 +138,7 @@ func testPlainPostHandler(t *testing.T, upstreamServer *httptest.Server) {
 func testPlainPostHandlerErrors(t *testing.T, upstreamServer *httptest.Server) {
 	agentServer := httptest.NewTLSServer(
 		NewHandler(
-			xslog.NopLogger,
+			slog.New(slog.DiscardHandler),
 			"https://example.buf.build",
 			upstreamServer.TLS,
 			map[string]struct{}{"forbidden-header": {}},

private/buf/buftesting/buftesting.go

@@ -17,12 +17,12 @@ package buftesting
 import (
 	"context"
 	"io"
+	"log/slog"
 	"net/http"
 	"path/filepath"
 	"testing"
 	"time"
 
-	"buf.build/go/standard/xlog/xslog"
 	"github.com/bufbuild/buf/private/buf/bufprotoc"
 	"github.com/bufbuild/buf/private/bufpkg/bufmodule"
 	"github.com/bufbuild/buf/private/pkg/github/githubtesting"
@@ -48,7 +48,7 @@ var (
 	}
 	testStorageosProvider = storageos.NewProvider(storageos.ProviderWithSymlinks())
 	testArchiveReader     = githubtesting.NewArchiveReader(
-		xslog.NopLogger,
+		slog.New(slog.DiscardHandler),
 		testStorageosProvider,
 		testHTTPClient,
 	)
@@ -130,7 +130,7 @@ func GetProtocFilePathsErr(ctx context.Context, dirPath string, limit int) ([]st
 	// impact on our dependency tree.
 	moduleSet, err := bufprotoc.NewModuleSetForProtoc(
 		ctx,
-		xslog.NopLogger,
+		slog.New(slog.DiscardHandler),
 		testStorageosProvider,
 		[]string{dirPath},
 		nil,

private/bufpkg/bufimage/bufimagefuzz/bufimagefuzz_unix_test.go

@@ -21,12 +21,12 @@ import (
 	"errors"
 	"fmt"
 	"io/fs"
+	"log/slog"
 	"os"
 	"path/filepath"
 	"strings"
 	"testing"
 
-	"buf.build/go/standard/xlog/xslog"
 	"github.com/bufbuild/buf/private/buf/buftesting"
 	"github.com/bufbuild/buf/private/bufpkg/bufimage"
 	"github.com/bufbuild/buf/private/bufpkg/bufmodule"
@@ -141,7 +141,7 @@ func fuzzBuild(ctx context.Context, dirPath string) (bufimage.Image, error) {
 	}
 	return bufimage.BuildImage(
 		ctx,
-		xslog.NopLogger,
+		slog.New(slog.DiscardHandler),
 		bufmodule.ModuleSetToModuleReadBucketWithOnlyProtoFiles(moduleSet),
 		bufimage.WithExcludeSourceCodeInfo(),
 	)

private/bufpkg/bufmodule/bufmoduletesting/bufmoduletesting.go

@@ -19,9 +19,9 @@ import (
 	"errors"
 	"fmt"
 	"io/fs"
+	"log/slog"
 	"time"
 
-	"buf.build/go/standard/xlog/xslog"
 	"buf.build/go/standard/xslices"
 	"github.com/bufbuild/buf/private/bufpkg/bufconfig"
 	"github.com/bufbuild/buf/private/bufpkg/bufmodule"
@@ -344,7 +344,7 @@ func newModuleSet(
 	// may be nil
 	commitIDToCreateTime map[uuid.UUID]time.Time,
 ) (bufmodule.ModuleSet, error) {
-	moduleSetBuilder := bufmodule.NewModuleSetBuilder(context.Background(), xslog.NopLogger, bufmodule.NopModuleDataProvider, bufmodule.NopCommitProvider)
+	moduleSetBuilder := bufmodule.NewModuleSetBuilder(context.Background(), slog.New(slog.DiscardHandler), bufmodule.NopModuleDataProvider, bufmodule.NopCommitProvider)
 	for i, moduleData := range moduleDatas {
 		if err := addModuleDataToModuleSetBuilder(
 			moduleSetBuilder,