diff --git a/cmd/soong_ui/main.go b/cmd/soong_ui/main.go
index b63918f..d3ef415 100644
--- a/cmd/soong_ui/main.go
+++ b/cmd/soong_ui/main.go
@@ -161,6 +161,7 @@
 	trace.SetOutput(filepath.Join(logsDir, "build.trace"))
 	stat.AddOutput(status.NewVerboseLog(log, filepath.Join(logsDir, "verbose.log")))
 	stat.AddOutput(status.NewErrorLog(log, filepath.Join(logsDir, "error.log")))
+	stat.AddOutput(status.NewProtoErrorLog(log, filepath.Join(logsDir, "build_error")))
 
 	defer met.Dump(filepath.Join(logsDir, "soong_metrics"))
 
diff --git a/ui/status/Android.bp b/ui/status/Android.bp
index 901a713..34241ee 100644
--- a/ui/status/Android.bp
+++ b/ui/status/Android.bp
@@ -19,6 +19,7 @@
         "golang-protobuf-proto",
         "soong-ui-logger",
         "soong-ui-status-ninja_frontend",
+        "soong-ui-status-build_error_proto",
     ],
     srcs: [
         "kati.go",
@@ -41,3 +42,12 @@
         "ninja_frontend/frontend.pb.go",
     ],
 }
+
+bootstrap_go_package {
+    name: "soong-ui-status-build_error_proto",
+    pkgPath: "android/soong/ui/status/build_error_proto",
+    deps: ["golang-protobuf-proto"],
+    srcs: [
+        "build_error_proto/build_error.pb.go",
+    ],
+}
diff --git a/ui/status/build_error_proto/build_error.pb.go b/ui/status/build_error_proto/build_error.pb.go
new file mode 100644
index 0000000..d4d0a6e
--- /dev/null
+++ b/ui/status/build_error_proto/build_error.pb.go
@@ -0,0 +1,175 @@
+// Code generated by protoc-gen-go. DO NOT EDIT.
+// source: build_error.proto
+
+package soong_build_error_proto
+
+import (
+	fmt "fmt"
+	proto "github.com/golang/protobuf/proto"
+	math "math"
+)
+
+// Reference imports to suppress errors if they are not otherwise used.
+var _ = proto.Marshal
+var _ = fmt.Errorf
+var _ = math.Inf
+
+// This is a compile-time assertion to ensure that this generated file
+// is compatible with the proto package it is being compiled against.
+// A compilation error at this line likely means your copy of the
+// proto package needs to be updated.
+const _ = proto.ProtoPackageIsVersion3 // please upgrade the proto package
+
+type BuildError struct {
+	// List of error messages of the overall build. The error messages
+	// are not associated with a build action.
+	ErrorMessages []string `protobuf:"bytes,1,rep,name=error_messages,json=errorMessages" json:"error_messages,omitempty"`
+	// List of build action errors.
+	ActionErrors         []*BuildActionError `protobuf:"bytes,2,rep,name=action_errors,json=actionErrors" json:"action_errors,omitempty"`
+	XXX_NoUnkeyedLiteral struct{}            `json:"-"`
+	XXX_unrecognized     []byte              `json:"-"`
+	XXX_sizecache        int32               `json:"-"`
+}
+
+func (m *BuildError) Reset()         { *m = BuildError{} }
+func (m *BuildError) String() string { return proto.CompactTextString(m) }
+func (*BuildError) ProtoMessage()    {}
+func (*BuildError) Descriptor() ([]byte, []int) {
+	return fileDescriptor_a2e15b05802a5501, []int{0}
+}
+
+func (m *BuildError) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_BuildError.Unmarshal(m, b)
+}
+func (m *BuildError) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_BuildError.Marshal(b, m, deterministic)
+}
+func (m *BuildError) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_BuildError.Merge(m, src)
+}
+func (m *BuildError) XXX_Size() int {
+	return xxx_messageInfo_BuildError.Size(m)
+}
+func (m *BuildError) XXX_DiscardUnknown() {
+	xxx_messageInfo_BuildError.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_BuildError proto.InternalMessageInfo
+
+func (m *BuildError) GetErrorMessages() []string {
+	if m != nil {
+		return m.ErrorMessages
+	}
+	return nil
+}
+
+func (m *BuildError) GetActionErrors() []*BuildActionError {
+	if m != nil {
+		return m.ActionErrors
+	}
+	return nil
+}
+
+// Build is composed of a list of build action. There can be a set of build
+// actions that can failed.
+type BuildActionError struct {
+	// Description of the command.
+	Description *string `protobuf:"bytes,1,opt,name=description" json:"description,omitempty"`
+	// The command name that raised the error.
+	Command *string `protobuf:"bytes,2,opt,name=command" json:"command,omitempty"`
+	// The command output stream.
+	Output *string `protobuf:"bytes,3,opt,name=output" json:"output,omitempty"`
+	// List of artifacts (i.e. files) that was produced by the command.
+	Artifacts []string `protobuf:"bytes,4,rep,name=artifacts" json:"artifacts,omitempty"`
+	// The error string produced by the build action.
+	Error                *string  `protobuf:"bytes,5,opt,name=error" json:"error,omitempty"`
+	XXX_NoUnkeyedLiteral struct{} `json:"-"`
+	XXX_unrecognized     []byte   `json:"-"`
+	XXX_sizecache        int32    `json:"-"`
+}
+
+func (m *BuildActionError) Reset()         { *m = BuildActionError{} }
+func (m *BuildActionError) String() string { return proto.CompactTextString(m) }
+func (*BuildActionError) ProtoMessage()    {}
+func (*BuildActionError) Descriptor() ([]byte, []int) {
+	return fileDescriptor_a2e15b05802a5501, []int{1}
+}
+
+func (m *BuildActionError) XXX_Unmarshal(b []byte) error {
+	return xxx_messageInfo_BuildActionError.Unmarshal(m, b)
+}
+func (m *BuildActionError) XXX_Marshal(b []byte, deterministic bool) ([]byte, error) {
+	return xxx_messageInfo_BuildActionError.Marshal(b, m, deterministic)
+}
+func (m *BuildActionError) XXX_Merge(src proto.Message) {
+	xxx_messageInfo_BuildActionError.Merge(m, src)
+}
+func (m *BuildActionError) XXX_Size() int {
+	return xxx_messageInfo_BuildActionError.Size(m)
+}
+func (m *BuildActionError) XXX_DiscardUnknown() {
+	xxx_messageInfo_BuildActionError.DiscardUnknown(m)
+}
+
+var xxx_messageInfo_BuildActionError proto.InternalMessageInfo
+
+func (m *BuildActionError) GetDescription() string {
+	if m != nil && m.Description != nil {
+		return *m.Description
+	}
+	return ""
+}
+
+func (m *BuildActionError) GetCommand() string {
+	if m != nil && m.Command != nil {
+		return *m.Command
+	}
+	return ""
+}
+
+func (m *BuildActionError) GetOutput() string {
+	if m != nil && m.Output != nil {
+		return *m.Output
+	}
+	return ""
+}
+
+func (m *BuildActionError) GetArtifacts() []string {
+	if m != nil {
+		return m.Artifacts
+	}
+	return nil
+}
+
+func (m *BuildActionError) GetError() string {
+	if m != nil && m.Error != nil {
+		return *m.Error
+	}
+	return ""
+}
+
+func init() {
+	proto.RegisterType((*BuildError)(nil), "soong_build_error.BuildError")
+	proto.RegisterType((*BuildActionError)(nil), "soong_build_error.BuildActionError")
+}
+
+func init() { proto.RegisterFile("build_error.proto", fileDescriptor_a2e15b05802a5501) }
+
+var fileDescriptor_a2e15b05802a5501 = []byte{
+	// 229 bytes of a gzipped FileDescriptorProto
+	0x1f, 0x8b, 0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0xff, 0x64, 0x90, 0xc1, 0x4a, 0xc3, 0x40,
+	0x10, 0x86, 0x49, 0x63, 0x95, 0x4c, 0xad, 0xd8, 0x41, 0x74, 0x04, 0x0f, 0xa1, 0x22, 0xe4, 0x94,
+	0x83, 0x6f, 0x60, 0x41, 0xf0, 0xe2, 0x25, 0x47, 0x2f, 0x61, 0xdd, 0xac, 0x65, 0xc1, 0x64, 0xc2,
+	0xce, 0xe6, 0xe8, 0x8b, 0xf8, 0xb4, 0x92, 0x69, 0xa5, 0xa5, 0x39, 0x7e, 0xdf, 0x3f, 0xfb, 0xef,
+	0xce, 0xc2, 0xea, 0x73, 0xf0, 0xdf, 0x4d, 0xed, 0x42, 0xe0, 0x50, 0xf6, 0x81, 0x23, 0xe3, 0x4a,
+	0x98, 0xbb, 0x6d, 0x7d, 0x14, 0xac, 0x7f, 0x00, 0x36, 0x23, 0xbe, 0x8e, 0x84, 0x4f, 0x70, 0xa5,
+	0xba, 0x6e, 0x9d, 0x88, 0xd9, 0x3a, 0xa1, 0x24, 0x4f, 0x8b, 0xac, 0x5a, 0xaa, 0x7d, 0xdf, 0x4b,
+	0x7c, 0x83, 0xa5, 0xb1, 0xd1, 0x73, 0xb7, 0x2b, 0x11, 0x9a, 0xe5, 0x69, 0xb1, 0x78, 0x7e, 0x2c,
+	0x27, 0xfd, 0xa5, 0x96, 0xbf, 0xe8, 0xb0, 0x5e, 0x51, 0x5d, 0x9a, 0x03, 0xc8, 0xfa, 0x37, 0x81,
+	0xeb, 0xd3, 0x11, 0xcc, 0x61, 0xd1, 0x38, 0xb1, 0xc1, 0xf7, 0xa3, 0xa3, 0x24, 0x4f, 0x8a, 0xac,
+	0x3a, 0x56, 0x48, 0x70, 0x61, 0xb9, 0x6d, 0x4d, 0xd7, 0xd0, 0x4c, 0xd3, 0x7f, 0xc4, 0x5b, 0x38,
+	0xe7, 0x21, 0xf6, 0x43, 0xa4, 0x54, 0x83, 0x3d, 0xe1, 0x03, 0x64, 0x26, 0x44, 0xff, 0x65, 0x6c,
+	0x14, 0x3a, 0xd3, 0xa5, 0x0e, 0x02, 0x6f, 0x60, 0xae, 0xcf, 0xa5, 0xb9, 0x1e, 0xda, 0xc1, 0xe6,
+	0xfe, 0xe3, 0x6e, 0xb2, 0x50, 0xad, 0x3f, 0xf9, 0x17, 0x00, 0x00, 0xff, 0xff, 0xb6, 0x18, 0x9e,
+	0x17, 0x5d, 0x01, 0x00, 0x00,
+}
diff --git a/ui/status/build_error_proto/build_error.proto b/ui/status/build_error_proto/build_error.proto
new file mode 100644
index 0000000..9c8470d
--- /dev/null
+++ b/ui/status/build_error_proto/build_error.proto
@@ -0,0 +1,46 @@
+// Copyright 2019 Google Inc. All Rights Reserved.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//   http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+syntax = "proto2";
+
+package soong_build_error;
+option go_package = "soong_build_error_proto";
+
+message BuildError {
+  // List of error messages of the overall build. The error messages
+  // are not associated with a build action.
+  repeated string error_messages = 1;
+
+  // List of build action errors.
+  repeated BuildActionError action_errors = 2;
+}
+
+// Build is composed of a list of build action. There can be a set of build
+// actions that can failed.
+message BuildActionError {
+  // Description of the command.
+  optional string description = 1;
+
+  // The command name that raised the error.
+  optional string command = 2;
+
+  // The command output stream.
+  optional string output = 3;
+
+  // List of artifacts (i.e. files) that was produced by the command.
+  repeated string artifacts = 4;
+
+  // The error string produced by the build action.
+  optional string error = 5;
+}
diff --git a/ui/status/build_error_proto/regen.sh b/ui/status/build_error_proto/regen.sh
new file mode 100755
index 0000000..7c3ec8f
--- /dev/null
+++ b/ui/status/build_error_proto/regen.sh
@@ -0,0 +1,3 @@
+#!/bin/bash
+
+aprotoc --go_out=paths=source_relative:. build_error.proto
diff --git a/ui/status/log.go b/ui/status/log.go
index 7badac7..9090f49 100644
--- a/ui/status/log.go
+++ b/ui/status/log.go
@@ -15,11 +15,17 @@
 package status
 
 import (
-	"android/soong/ui/logger"
 	"compress/gzip"
+	"errors"
 	"fmt"
 	"io"
+	"io/ioutil"
 	"strings"
+
+	"github.com/golang/protobuf/proto"
+
+	"android/soong/ui/logger"
+	"android/soong/ui/status/build_error_proto"
 )
 
 type verboseLog struct {
@@ -77,8 +83,7 @@
 }
 
 type errorLog struct {
-	w io.WriteCloser
-
+	w     io.WriteCloser
 	empty bool
 }
 
@@ -102,20 +107,17 @@
 		return
 	}
 
-	cmd := result.Command
-	if cmd == "" {
-		cmd = result.Description
-	}
-
 	if !e.empty {
 		fmt.Fprintf(e.w, "\n\n")
 	}
 	e.empty = false
 
 	fmt.Fprintf(e.w, "FAILED: %s\n", result.Description)
+
 	if len(result.Outputs) > 0 {
 		fmt.Fprintf(e.w, "Outputs: %s\n", strings.Join(result.Outputs, " "))
 	}
+
 	fmt.Fprintf(e.w, "Error: %s\n", result.Error)
 	if result.Command != "" {
 		fmt.Fprintf(e.w, "Command: %s\n", result.Command)
@@ -144,3 +146,55 @@
 	fmt.Fprint(e.w, string(p))
 	return len(p), nil
 }
+
+type errorProtoLog struct {
+	errorProto soong_build_error_proto.BuildError
+	filename   string
+	log        logger.Logger
+}
+
+func NewProtoErrorLog(log logger.Logger, filename string) StatusOutput {
+	return &errorProtoLog{
+		errorProto: soong_build_error_proto.BuildError{},
+		filename:   filename,
+		log:        log,
+	}
+}
+
+func (e *errorProtoLog) StartAction(action *Action, counts Counts) {}
+
+func (e *errorProtoLog) FinishAction(result ActionResult, counts Counts) {
+	if result.Error == nil {
+		return
+	}
+
+	e.errorProto.ActionErrors = append(e.errorProto.ActionErrors, &soong_build_error_proto.BuildActionError{
+		Description: proto.String(result.Description),
+		Command:     proto.String(result.Command),
+		Output:      proto.String(result.Output),
+		Artifacts:   result.Outputs,
+		Error:       proto.String(result.Error.Error()),
+	})
+}
+
+func (e *errorProtoLog) Flush() {
+	data, err := proto.Marshal(&e.errorProto)
+	if err != nil {
+		e.log.Println("Failed to marshal build status proto: %v", err)
+		return
+	}
+	err = ioutil.WriteFile(e.filename, []byte(data), 0644)
+	if err != nil {
+		e.log.Println("Failed to write file %s: %v", e.errorProto, err)
+	}
+}
+
+func (e *errorProtoLog) Message(level MsgLevel, message string) {
+	if level > ErrorLvl {
+		e.errorProto.ErrorMessages = append(e.errorProto.ErrorMessages, message)
+	}
+}
+
+func (e *errorProtoLog) Write(p []byte) (int, error) {
+	return 0, errors.New("not supported")
+}