diff --git a/pkg/build/build.go b/pkg/build/build.go
index 48bae22..01ad30b 100644
--- a/pkg/build/build.go
+++ b/pkg/build/build.go
@@ -96,11 +96,9 @@ func (b *Build) Build() error {
 	log.Printf("go build cmd is: %v", cmd.Args)
 	err := cmd.Start()
 	if err != nil {
-		log.Errorf("Fail to execute: %v. The error is: %v", cmd.Args, err)
 		return fmt.Errorf("fail to execute: %v, err: %w", cmd.Args, err)
 	}
 	if err = cmd.Wait(); err != nil {
-		log.Errorf("go build failed. The error is: %v", err)
 		return fmt.Errorf("fail to execute: %v, err: %w", cmd.Args, err)
 	}
 	log.Infoln("Go build exit successful.")
@@ -111,7 +109,6 @@ func (b *Build) Build() error {
 // the binary name is always same as the directory name of current directory
 func (b *Build) determineOutputDir(outputDir string) (string, error) {
 	if b.TmpDir == "" {
-		log.Errorf("Can only be called after Build.MvProjectsToTmp(): %v", ErrWrongCallSequence)
 		return "", fmt.Errorf("can only be called after Build.MvProjectsToTmp(): %w", ErrWrongCallSequence)
 	}
 
@@ -119,8 +116,8 @@ func (b *Build) determineOutputDir(outputDir string) (string, error) {
 	if outputDir != "" {
 		abs, err := filepath.Abs(outputDir)
 		if err != nil {
-			log.Errorf("Fail to transform the path: %v to absolute path: %v", outputDir, err)
-			return "", err
+			return "", fmt.Errorf("Fail to transform the path: %v to absolute path: %v", outputDir, err)
+
 		}
 		return abs, nil
 	}
diff --git a/tests/build.bats b/tests/build.bats
index c9698ea..e2f17a0 100755
--- a/tests/build.bats
+++ b/tests/build.bats
@@ -29,18 +29,48 @@ teardown_file() {
     kill -9 $GOC_PID
 }
 
+setup() {
+    goc init
+}
+
 @test "test basic goc build command" {
     cd samples/run_for_several_seconds
-    wait_profile_backend "build1"
+    
+    wait_profile_backend "build1" &
+    profile_pid=$!
+
     run gocc build --debug --debugcisyncfile ci-sync.bak;
-    info build output: $output
+    info build1 output: $output
     [ "$status" -eq 0 ]
+
+    wait $profile_pid
 }
 
 @test "test goc build command without debug" {
     cd samples/run_for_several_seconds
-    wait_profile_backend "build2"
+
+    wait_profile_backend "build2" &
+    profile_pid=$!
+
     run gocc build --debugcisyncfile ci-sync.bak;
-    info build output: $output
+    info build2 output: $output
     [ "$status" -eq 0 ]
+
+    wait $profile_pid
+}
+
+@test "test goc build in GOPATH project" {
+    info $PWD
+    export GOPATH=$PWD/samples/simple_gopath_project
+    export GO111MODULE=off
+    cd samples/simple_gopath_project/src/qiniu.com/simple_gopath_project
+
+    wait_profile_backend "build3" &
+    profile_pid=$!
+
+    run gocc build --buildflags="-v" --debug --debugcisyncfile ci-sync.bak;
+    info build3 output: $output
+    [ "$status" -eq 0 ]
+
+    wait $profile_pid
 }
\ No newline at end of file
diff --git a/tests/clear.bats b/tests/clear.bats
index 453924c..24583c7 100755
--- a/tests/clear.bats
+++ b/tests/clear.bats
@@ -44,19 +44,25 @@ teardown_file() {
 }
 
 @test "test basic goc clear command" {
-    wait_profile_backend "clear1"
+    wait_profile_backend "clear1" &
+    profile_pid=$!
 
     run gocc clear --debug --debugcisyncfile ci-sync.bak;
     info clear1 output: $output
     [ "$status" -eq 0 ]
-    [[ "$output" == *"coverage counter clear call successfully"* ]]
+    [[ "$output" == *""* ]]
+
+    wait $profile_pid
 }
 
 @test "test clear another center" {
-    wait_profile_backend "clear2"
+    wait_profile_backend "clear2" &
+    profile_pid=$!
 
     run gocc clear --center=http://127.0.0.1:60001 --debug --debugcisyncfile ci-sync.bak;
     info clear2 output: $output
     [ "$status" -eq 0 ]
     [[ "$output" == *"coverage counter clear call successfully"* ]]
+
+    wait $profile_pid
 }
\ No newline at end of file
diff --git a/tests/cover.bats b/tests/cover.bats
index fce90e9..dc02751 100755
--- a/tests/cover.bats
+++ b/tests/cover.bats
@@ -35,9 +35,16 @@ teardown_file() {
     kill -9 $GOC_PID
 }
 
+setup() {
+    goc init
+}
+
 @test "test basic goc cover command" {
     cd test-temp
-    wait_profile_backend "cover1"
+
+    wait_profile_backend "cover1" &
+    profile_pid=$!
+
     run gocc cover --debug --debugcisyncfile ci-sync.bak;
     info cover1 output: $output
     [ "$status" -eq 0 ]
@@ -46,4 +53,6 @@ teardown_file() {
     info ls output: $output
     [ "$status" -eq 0 ]
     [[ "$output" == *"http_cover_apis_auto_generated.go"* ]]
+
+    wait $profile_pid
 }
diff --git a/tests/diff.bats b/tests/diff.bats
index dd96f15..fb8e653 100755
--- a/tests/diff.bats
+++ b/tests/diff.bats
@@ -29,41 +29,53 @@ teardown_file() {
     kill -9 $GOC_PID
 }
 
+setup() {
+    goc init
+}
+
 @test "test basic goc diff command" {
     cd samples/diff_samples
 
-    wait_profile_backend "diff1"
-
+    wait_profile_backend "diff1" &
+    profile_pid=$!
 
     run gocc diff --new-profile=./new.voc --base-profile=./base.voc --debug --debugcisyncfile ci-sync.bak;
-    info list output: $output
+    info diff1 output: $output
     [ "$status" -eq 0 ]
     [[ "$output" == *"qiniu.com/kodo/apiserver/server/main.go |     50.0%     |    100.0%    | 50.0%"* ]]
     [[ "$output" == *"Total                                   |     50.0%     |    100.0%    | 50.0%"* ]]
+
+    wait $profile_pid
 }
 
 @test "test diff in prow environment with periodic job" {
     cd samples/diff_samples
 
-    wait_profile_backend "diff2"
+    wait_profile_backend "diff2" &
+    profile_pid=$!
 
     export JOB_TYPE=periodic
 
-    run gocc diff --new-profile=./new.voc --prow-postsubmit-job=base --debug --debugcisyncfile ci-sync.bak;
-    info diff1 output: $output
-    [ "$status" -eq 0 ]
-    [[ "$output" == *"do nothing"* ]]
-}
-
-@test "test diff in prow environment with postsubmit job" {
-    cd samples/diff_samples
-
-    wait_profile_backend "diff3"
-
-    export JOB_TYPE=postsubmit
-
     run gocc diff --new-profile=./new.voc --prow-postsubmit-job=base --debug --debugcisyncfile ci-sync.bak;
     info diff2 output: $output
     [ "$status" -eq 0 ]
     [[ "$output" == *"do nothing"* ]]
+
+    wait $profile_pid
+}
+
+@test "test diff in prow environment with postsubmit job" {
+    cd samples/diff_samples
+
+    wait_profile_backend "diff3" &
+    profile_pid=$!
+
+    export JOB_TYPE=postsubmit
+
+    run gocc diff --new-profile=./new.voc --prow-postsubmit-job=base --debug --debugcisyncfile ci-sync.bak;
+    info diff3 output: $output
+    [ "$status" -eq 0 ]
+    [[ "$output" == *"do nothing"* ]]
+
+    wait $profile_pid
 }
\ No newline at end of file
diff --git a/tests/init.bats b/tests/init.bats
index 68dc03b..0bb5d9d 100755
--- a/tests/init.bats
+++ b/tests/init.bats
@@ -44,9 +44,12 @@ teardown_file() {
 }
 
 @test "test init command" {
-    wait_profile_backend "init1"
+    wait_profile_backend "init1" &
+    profile_pid=$!
 
     run gocc init --center=http://127.0.0.1:60001 --debug --debugcisyncfile ci-sync.bak;
     info init output: $output
     [ "$status" -eq 0 ]
+
+    wait $profile_pid
 }
\ No newline at end of file
diff --git a/tests/install.bats b/tests/install.bats
index 3b4c321..dc4252d 100755
--- a/tests/install.bats
+++ b/tests/install.bats
@@ -29,13 +29,22 @@ teardown_file() {
     kill -9 $GOC_PID
 }
 
+setup() {
+    goc init
+}
+
 @test "test basic goc install command" {
     info $PWD
     export GOPATH=$PWD/samples/simple_gopath_project
     export GO111MODULE=off
     cd samples/simple_gopath_project/src/qiniu.com/simple_gopath_project
-    wait_profile_backend "install"
+
+    wait_profile_backend "install" &
+    profile_pid=$!
+
     run gocc install --debug --debugcisyncfile ci-sync.bak;
     info install output: $output
     [ "$status" -eq 0 ]
+
+    wait $profile_pid
 }
diff --git a/tests/list.bats b/tests/list.bats
index 76284fe..7e9c5da 100755
--- a/tests/list.bats
+++ b/tests/list.bats
@@ -36,11 +36,14 @@ teardown_file() {
 }
 
 @test "test basic goc list command" {
-    wait_profile_backend "list"
+    wait_profile_backend "list" &
+    profile_pid=$!
 
     run gocc list --debug --debugcisyncfile ci-sync.bak;
     info list output: $output
     [ "$status" -eq 0 ]
     [[ "$output" == *"gocc"* ]]
     [[ "$output" == *"http"* ]]
+
+    wait $profile_pid
 }
\ No newline at end of file
diff --git a/tests/profile.bats b/tests/profile.bats
index fa76a32..6dfbd30 100755
--- a/tests/profile.bats
+++ b/tests/profile.bats
@@ -27,6 +27,10 @@ setup_file() {
     GOCC_PID=$!
     sleep 1
 
+    WORKDIR=$PWD
+    cd samples/run_for_several_seconds
+    goc build --center=http://127.0.0.1:60001
+
     info "goc server started"
 }
 
@@ -35,19 +39,41 @@ teardown_file() {
     kill -9 $GOCC_PID
 }
 
-@test "test goc profile to stdout" {
-    wait_profile_backend "profile1"
+setup() {
+    goc init --center=http://127.0.0.1:60001
+    goc init
+}
 
-    run gocc profile --debug --debugcisyncfile ci-sync.bak;
+@test "test goc profile to stdout" {
+    ./simple-project 3>&- &
+    SAMPLE_PID=$!
+    sleep 2
+
+    wait_profile_backend "profile1" &
+    profile_pid=$!
+
+    run gocc profile --center=http://127.0.0.1:60001 --debug --debugcisyncfile ci-sync.bak
+    info $output
     [ "$status" -eq 0 ]
     [[ "$output" == *"mode: count"* ]]
+
+    wait $profile_pid
+    kill -9 $SAMPLE_PID
 }
 
 @test "test goc profile to file" {
-    wait_profile_backend "profile2"
+    ./simple-project 3>&- &
+    SAMPLE_PID=$!
+    sleep 2
 
-    run gocc profile -o test-profile.bak --debug --debugcisyncfile ci-sync.bak;
+    wait_profile_backend "profile2" &
+    profile_pid=$!
+
+    run gocc profile --center=http://127.0.0.1:60001 -o test-profile.bak --debug --debugcisyncfile ci-sync.bak;
     [ "$status" -eq 0 ]
     run cat test-profile.bak
     [[ "$output" == *"mode: count"* ]]
+
+    wait $profile_pid
+    kill -9 $SAMPLE_PID
 }
\ No newline at end of file
diff --git a/tests/register.bats b/tests/register.bats
index 058234c..6f5d089 100755
--- a/tests/register.bats
+++ b/tests/register.bats
@@ -35,20 +35,31 @@ teardown_file() {
     kill -9 $GOCC_PID
 }
 
+# we need to catch gocc server, so no init
+# setup() {
+#     goc init
+# }
+
 @test "test basic goc register command" {
-    wait_profile_backend "register1"
+    wait_profile_backend "register1" &
+    profile_pid=$!
 
     run gocc register --center=http://127.0.0.1:60001 --name=xyz --address=http://137.0.0.1:666 --debug --debugcisyncfile ci-sync.bak;
-    info register output: $output
+    info register1 output: $output
     [ "$status" -eq 0 ]
     [[ "$output" == *"success"* ]]
+
+    wait $profile_pid
 }
 
 @test "test goc register without port" {
-    wait_profile_backend "register2"
+    wait_profile_backend "register2" &
+    profile_pid=$!
 
     run gocc register --center=http://127.0.0.1:60001 --name=xyz --address=http://137.0.0.1 --debug --debugcisyncfile ci-sync.bak;
-    info register output: $output
+    info register2 output: $output
     [ "$status" -eq 0 ]
     [[ "$output" == *"missing port"* ]]
-}
\ No newline at end of file
+
+    wait $profile_pid
+}
diff --git a/tests/run.bats b/tests/run.bats
index 026a64f..81ba27e 100755
--- a/tests/run.bats
+++ b/tests/run.bats
@@ -34,10 +34,14 @@ teardown_file() {
     export GOPATH=$PWD/samples/simple_gopath_project
     export GO111MODULE=off
     cd samples/simple_gopath_project/src/qiniu.com/simple_gopath_project
-    wait_profile_backend "run1"
+
+    wait_profile_backend "run1" &
+    profile_pid=$!
 
     run gocc run . --debug --debugcisyncfile ci-sync.bak;
     info run output: $output
     [ "$status" -eq 0 ]
     [[ "$output" == *"hello, world."* ]]
+
+    wait $profile_pid
 }
\ No newline at end of file
diff --git a/tests/util.sh b/tests/util.sh
index d59d0d8..950c3b5 100644
--- a/tests/util.sh
+++ b/tests/util.sh
@@ -22,7 +22,8 @@ wait_profile() {
     local timeout=10
     until [[ ${n} -ge ${timeout} ]]
     do
-        # check whether the target port is listened by specific process
+        LS=`ls`
+        info $1, $LS
         if [[ -f ci-sync.bak ]]; then
             break
         fi
@@ -31,9 +32,10 @@ wait_profile() {
     done
     # collect from center
     goc profile -o filtered-$1.cov
+    info "done $1 collect"
 }
 
 wait_profile_backend() {
     rm ci-sync.bak || true
-    coproc { wait_profile $1; }
+    wait_profile $1
 }
\ No newline at end of file
diff --git a/tests/version.bats b/tests/version.bats
index 4323a2c..a4adfe2 100755
--- a/tests/version.bats
+++ b/tests/version.bats
@@ -35,8 +35,11 @@ teardown_file() {
 }
 
 @test "test basic goc version command" {
-    wait_profile_backend "version"
+    wait_profile_backend "version" &
+    profile_pid=$!
 
     run gocc version --debug --debugcisyncfile ci-sync.bak;
     [ "$output" = "(devel)" ]
+
+    wait $profile_pid
 }
\ No newline at end of file