dot2texi and output directory

I'm using the dot2texi package to draw some graphs on my beamer presentation, but I can't figure out how to make it work with the outputdir option.

Here is my directory structure:

├── biblio.bib
├── build
├── img
│   └── logo.eps
└── main.tex

I'm using latexmk and here is my configuration file:

$pdf_mode = 1;
$recorder = 1;
$pdf_previewer = 'evince';
$pdf_update_method = 0;
$pdflatex = 'xelatex -interaction=nonstopmode -shell-escape -output-directory=build';
@default_files = ("main");
$out_dir = './build';
$biber = 'biber --output-safechars';
$bibtex_use = 1;
$cleanup_mode = 2;
$clean_ext = ('%R.tdo %R.bbl');
$latex_silent_switch = "-interaction=batchmode -c-style-errors";
$silent = 1;

And here is my document main.tex:

% warns when you accidentally use deprecated LaTeX constructs from l2tabu
\RequirePackage[l2tabu,orthodox]{nag}
\documentclass[final, 11pt, aspectratio=1610, xcolor=table, hyperref={bookmarks,hidelinks}]{beamer}
\usetheme[block=fill,progressbar=foot]{metropolis}
%\usetheme{sthlm}
%\usecolortheme{sthlmv42}
\usepackage{ifxetex}

\ifxetex
    % XeLaTeX
    \usepackage{polyglossia}
    \setmainlanguage{brazil}
    \usepackage{fontspec}
\else
    % default: pdfLaTeX
    \usepackage[brazilian]{babel} % language of the document, activate the appropriate hyphenation rules
    \usepackage[utf8]{inputenc} % input character encoding
    \usepackage[T1]{fontenc} % output character encoding: accented characters, hypernations
    \usepackage{lmodern} % latin modern font
    %\usepackage[sfdefault,semibold]{FiraSans}
    %\usepackage{FiraMono}
\fi

% Conctrols shrinking and stretching of the fonts and with the extent to which text protrudes into the margins in a way that yields results that look better, that have fewer instances of hyphenation, and fewer overfull hboxes.
\usepackage[stretch=10]{microtype}
\usepackage{relsize} % Set the font size relative to the current font size
% references
\usepackage[
backend=biber,
style=numeric,
citestyle=numeric-comp
]{biblatex}
% layout
\usepackage{parskip} % helo find best places for page breaks and skip between lists
\usepackage{lscape} % long tables and landscape pictures
\usepackage{setspace} % space between lines
\usepackage{float} % Graphics, tables placement
\usepackage{adjustbox} % adjust boxed content (tables)
\usepackage{geometry}
% graphics
\usepackage{graphicx} % manage pictures
\usepackage{tikz}
\usetikzlibrary {positioning,arrows,shapes,shadows}
\usepackage{moreverb}
\usepackage{xkeyval}
\usepackage[autosize,outputdir={build/},debug]{dot2texi}
% math
\usepackage{amsmath}
\usepackage{amssymb}
\usepackage{amsthm}
\usepackage{calrsfs} % Copperplate calligraphic letters
\usepackage{amsfonts} % extended set of fonts for use in mathematics
\usepackage{bbm} % double-striked left side and normal right side fonts
% pseudocode
\usepackage{algorithm}
\usepackage[noend]{algpseudocode}
% code
\usepackage[outputdir=\detokenize{./build}]{minted}
% tables
\usepackage{booktabs}
\usepackage{array}
% misc
\usepackage[small]{caption} % customize caption in float environments
\usepackage[subrefformat=parens,labelformat=parens]{subcaption} % caption for subfigures
\usepackage{color}
% \usepackage{xkeyval}
\usepackage[portuguese,colorinlistoftodos]{todonotes}
\usepackage[inline, shortlabels]{enumitem} % inline enumerate
\usepackage{csquotes} % quotations
\usepackage{appendixnumberbeamer} % appendix on beamer
\usepackage{url}
\usepackage{multicol}
% cross-refs
\usepackage{hypcap} % anchors links to the beginning of floats
%\usepackage{cleveref}

% macros
\floatplacement{figure}{H}
\hypersetup{colorlinks=false}
% Resetting mathcal font to default
% https://tex.stackexchange.com/questions/67881/resetting-mathcal-font-to-default
\DeclareMathAlphabet{\mathcal}{OMS}{cmsy}{m}{n}

\setbeamertemplate{note page}[plain]
% http://tex.stackexchange.com/questions/124256/how-do-i-get-numbered-entries-in-a-beamer-bibliography
\setbeamertemplate{bibliography item}{\insertbiblabel}
% show notes
%\setbeameroption{show notes}
%\setbeameroption{show notes on second screen=right}
\presetkeys{todonotes}{fancyline,inline}{}

\newcommand{\fittable}[1]{\begin{adjustbox}{max width=\textwidth}#1\end{adjustbox}}

\setminted{linenos=true,autogobble=true,breakautoindent=true,breaklines=true}
% personalize line numbers
\renewcommand{\theFancyVerbLine}{\sffamily\textcolor[rgb]{0.5,0.5,1.0}{\scriptsize\oldstylenums{\arabic{FancyVerbLine}}}}

\addbibresource{biblio.bib}
\graphicspath{{./img/}}

\title{\textbf{Tile}}
\author{Authot}
\institute{Institute}
\titlegraphic{
    \tikz[overlay,remember picture]
    \node[at=(current page.south), anchor=south] {
        \includegraphics[scale=0.15]{logo}
    };
}
\date{\today}

\begin{document}

\maketitle

\begin{frame}
    \begin{dot2tex}[neato,mathmode]
    digraph G {
        node [shape="circle"];
        a_1 -> a_2 -> a_3 -> a_4 -> a_1;
    }
    \end{dot2tex}
\end{frame}

\end{document}

This is the error that latexmk shows:

Latexmk: ====== There were problems writing to----- 'main-dot2tex-fig1.dot' in './build/build'.
----- But this is not the standard situation of
----- aux file to subdir of output directory, with
----- non-existent subdir

Respective main.log section:

! I can't write on file `build/main-dot2tex-fig1.dot'.
\dottotexverbatimwrite ...penout \verbatim@out #1 
                                                  \BeforeStream \let \do \@m...
l.2 \begin{dot2tex}[neato,mathmode]

(Press Enter to retry, or Control-D to exit; default file extension is `.tex')
Please type another output file name
! Emergency stop.
\dottotexverbatimwrite ...penout \verbatim@out #1 
                                                  \BeforeStream \let \do \@m...
l.2 \begin{dot2tex}[neato,mathmode]

*** (job aborted, file error in nonstop mode)

Seems like the dot2texi is appending the build name twice in the path (latexmk error output), but I don't know why.

Anyone can help me?

xyz2tex / dot2texisty

dot2texi and output directory #8