report-converter can't convert smatch output

[wanglinpan]

report-converter -t smatch -o ./codechecker_smatch_reports ./smatch_warns.txt
[INFO] - No 'smatch' results can be found in smatch_warns.txt
double check smatch_warns.txt is smatch tool output file , and correct format eg:
file1.c:10 foo() warn: potential NULL pointer dereference
file1.c:20 bar() warn: memory leak detected
file2.c:50 baz() warn: format string contains unusual character '\x1b'
file3.c:100 qux() warn: array out of bounds access

Why it can't get correct format of smatch_warns.txt?

[wanglinpan]

smatch code come from master branch
report-converter come from master branch.