LuaInspect fails on start: attempt to index local 'text'

[agladysh]

$ ~/projects/lua-inspect/luainspect -f html -o luainspect.html .
lua: ...agladysh/projects/lua-inspect/lib/luainspect/ast.lua:119: attempt to index local 'text' (a nil value)
stack traceback:
    ...agladysh/projects/lua-inspect/lib/luainspect/ast.lua:119: in function 'linecount'
    ...agladysh/projects/lua-inspect/lib/luainspect/ast.lua:142: in function 'ast_from_string'
    ...dysh/projects/lua-inspect/lib/luainspect/command.lua:64: in main chunk
    [C]: in function 'require'
    /home/agladysh/projects/lua-inspect/luainspect:16: in main chunk
    [C]: ?

~/projects/lua-inspect$ git rev-parse HEAD
ca3988019a2f5f1b3f4e94b285eb6e77e5923dd3