Strange 'memset' error when using std.range.repeat and std.array.array

[via Digitalmars-d-learn]

Need some help)...
Having the following chunk of code:
string[] lines;
...
if( firstIndentStyle == IndentStyle.space )
{
        lines ~= " ".repeat.take(newIndentCount).array;
}
else //Tabs
{
	lines ~= "\t".repeat.take(newIndentCount).array; //This causes 
strange 'memset' error
}

This code fails with seg fault in memset. And I don't know why? 
here goes stack trace:

declarative [20930] [cores: 3]  
	Thread #1 [declarative] 20930 [core: 3] (Suspended : Signal : 
SIGSEGV:Segmentation fault)	
                gc.gc.Gcx.bigAlloc() at 0x4dbc73        
                gc.gc.GC.malloc() at 0x4d9375   
                gc_malloc() at 0x4cc308 
                core.memory.GC.malloc() at 0x4cbe64     
		std.array.__T14arrayAllocImplVbi0TAaTmZ.arrayAllocImpl() at 
array.d:628 0x4a1185	
		std.array.__T18uninitializedArrayTAaTmZ.uninitializedArray() at 
array.d:533 0x4a1155	
                
std.array.__T5arrayTS3std5range43__T4TakeTS3std5range13__T6RepeatTaZ6RepeatZ4TakeZ.array()
 at array.d:119 0x4bc699      
                
std.array.__T5arrayTS3std5range43__T4TakeTS3std5range13__T6RepeatTaZ6RepeatZ4TakeZ.array()
 at array.d:119 0x4bc5fb      
                
declarative.parser.__T6ParserTS11declarative11lexer_tools76__T16TextForwardRangeTAyaVS11declarative6common14LocationConfigS5i1i1i1i1i1Z16TextForwardRangeZ.Parser.parseMixedBlockData()
 at parser.d:437 0x4c26e3        
                
declarative.parser.__T6ParserTS11declarative11lexer_tools76__T16TextForwardRangeTAyaVS11declarative6common14LocationConfigS5i1i1i1i1i1Z16TextForwardRangeZ.Parser.parseMixedBlock()
 at parser.d:481 0x4c29fa    
                <...more frames...>       



Tried to reduce example into the folowing (and it is working!):

module bug_test;

import std.stdio;
import std.range;

void main()
{
        import std.array: array;
        
        string[] lines;
        
        size_t newIndentCount = 8;
        
        lines ~= ' '.repeat.take(newIndentCount).array;
        
        writeln( lines );
}

Could someone imagine why this could happen?))