object.Exception@treemapgen.d(56): No symbols
----------------
/usr/local/src/phobos/std/exception.d:420 pure @safe void std.exception.bailOut!(Exception).bailOut(immutable(char)[], ulong, const(char[])) [0x4aa5de]
/usr/local/src/phobos/std/exception.d:388 pure @safe bool std.exception.enforce!(Exception, bool).enforce(bool, lazy const(char)[], immutable(char)[], ulong) [0x4aa55e]
treemapgen.d:13 _Dmain [0x4a955d]
src/rt/dmain2.d:476 _D2rt6dmain211_d_run_mainUiPPaPUAAaZiZ6runAllMFZ9__lambda1MFNlZv [0x4d5448]
src/rt/dmain2.d:451 scope void rt.dmain2._d_run_main(int, char**, extern (C) int function(char[][])*).tryExec(scope void delegate()) [0x4d5364]
src/rt/dmain2.d:476 scope void rt.dmain2._d_run_main(int, char**, extern (C) int function(char[][])*).runAll() [0x4d53ef]
src/rt/dmain2.d:451 scope void rt.dmain2._d_run_main(int, char**, extern (C) int function(char[][])*).tryExec(scope void delegate()) [0x4d5364]
src/rt/dmain2.d:484 _d_run_main [0x4d52dc]
??:? main [0x4b949f]
??:? __libc_start_main [0x3abe282f]