`./failurelogs.d regression-1.log > failed_logs_1.log` (D language (https://dlang.org/), `dmd` is required to run this script)

failurelogs.d

#!/usr/bin/rdmd

import std.stdio;
import std.string;
import std.conv;

void main(string[] args)
{
    string[] records;
    bool inRecord;
    bool failedRecord;
    string testname;
    string[] failedTests;

    foreach(line; File(args[1]).byLine)
    {
        records ~= to!string(line);

        if (line == "================================================================================")
        {
            if (inRecord)
            {
                inRecord = false;
                // Print lines of failed Test
                if (failedRecord)
                {
                    if (testname != "")
                        failedTests ~= testname;
                    
                    testname = "";
                    foreach(record; records)
                    {
                        writeln(record);
                    }
                }

                // Reset and continue processing next record
                records = [];
                failedRecord = false;
                continue;
            }
            
            if (!inRecord)
            {
                inRecord = true;
                continue;
            }
        }

        if (line.startsWith("Result: FAIL"))
        {
            failedRecord = true;
        }

        if (line.startsWith("/usr/share/glusterfs/tests/") && line.stripRight.endsWith(" .."))
        {
            testname = to!string(line.replace(" ..", ""));
        }
                
    }
    stderr.writeln("Failed test files:");
    stderr.writeln(failedTests.join("\n"));
}