Rust stack backtrace filled with unknown on Windows 8.1

[skiwi2]

When running a piece of code I get the following stack backtrace:

' panicked at 'index out of bounds', ../src/libcore\option.rs:700 stack backtrace: 0: 0x4707c3 - 1: 0x46fcb5 - 2: 0x433baf - 3: 0x43573b - 4: 0x462eab - 5: 0x484e05 - 6: 0x4a61c4 - 7: 0x41ffdb - 8: 0x41ff4c - 9: 0x402bf5 - 10: 0x46f2ed - 11: 0x46f11a - 12: 0x42ba1a - 13: 0x4013b4 - 14: 0x4014e7 - 15: 0x7ffa1a5613d1 - error: Process didn't exit successfully: `C:\Users\Frank\Dropbox\workspace\sieve_multithreaded\target\debug\sieve_multithreaded.exe` (exit code: 101)

I'm running cargo build with RUST_BACKTRACE=1 and have the following %PATH%:

C:\Program Files\Microsoft MPI\Bin;C:\Program Files\Haskell\bin;C:\Program Files\Haskell Platform\7.10.2-a\lib\extralibs\bin;C:\Program Files\Haskell Platform
7.10.2-a\bin;C:\ProgramData\Oracle\Java\javapath;C:\jet9.0-eval-amd64\bin;C:\Program Files\ImageMagick-6.8.7-Q16;C:\Windows\system32;C:\Windows;C:\Windows\Syste
m32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Program Files\Microsoft\Web Platform Installer;C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pag
es\v1.0;C:\Program Files\Microsoft SQL Server\110\Tools\Binn;C:\Program Files (x86)\CMake 2.8\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\W
INDOWS\System32\WindowsPowerShell\v1.0;C:\Program Files (x86)\Windows Live\Shared;C:\Program Files\Java\jdk1.7.0_25\bin;C:\Program Files (x86)\QuickTime\QTSys
tem;C:\Program Files (x86)\Tesseract-OCR;C:\Program Files\Calibre2;C:\Program Files (x86)\Windows Kits\8.1\Windows Performance Toolkit;C:\Program Files (x86)
\Microsoft SDKs\TypeScript\1.0;C:\Program Files (x86)\Subversion\bin;C:\texlive\2014\bin\win32;C:\Program Files\nodejs;C:\HashiCorp\Vagrant\bin;C:\Program Fil
es (x86)\Gource\cmd;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\Program Files\Haskell Platform\7.10.2-a\mingw\bin;C:\Leksah\bin;C:\Program Files
(x86)\Skype\Phone;C:\Program Files\Rust stable GNU 1.9\bin;C:\Users\Frank\AppData\Roaming\cabal\bin;C:\Program Files (x86)\NVIDIA Corporation\PhysX\Common;C:\P
rogramData\Oracle\Java\javapath;C:\jet9.0-eval-amd64\bin;C:\Program Files\ImageMagick-6.8.7-Q16;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windo
ws\System32\WindowsPowerShell\v1.0;C:\Program Files\Microsoft\Web Platform Installer;C:\Program Files (x86)\Microsoft ASP.NET\ASP.NET Web Pages\v1.0;C:\Progr
am Files\Microsoft SQL Server\110\Tools\Binn;C:\Program Files (x86)\CMake 2.8\bin;C:\WINDOWS\system32;C:\WINDOWS;C:\WINDOWS\System32\Wbem;C:\WINDOWS\System32\W
indowsPowerShell\v1.0;C:\Program Files (x86)\Windows Live\Shared;C:\Program Files\Java\jdk1.7.0_25\bin;C:\Program Files (x86)\QuickTime\QTSystem;C:\Program F
iles (x86)\Tesseract-OCR;C:\Program Files\Calibre2;C:\Program Files (x86)\Windows Kits\8.1\Windows Performance Toolkit;C:\Program Files (x86)\Microsoft SDKs\T
ypeScript\1.0;C:\Program Files (x86)\Subversion\bin;C:\Program Files (x86)\Skype\Phone;C:\python27;C:\python27\Scripts;D:\texlive\2014\bin\win32;C:\Users\Fran
k\AppData\Roaming\npm;C:\Program Files\Oracle\VirtualBox;C:\grails-3.0.9\bin;C:\Program Files\mingw-w64\x86_64-4.9.0-posix-seh-rt_v3-rev2\mingw64\bin;C:\Program
Files (x86)\Git\bin;C:\cntk

I have no clue why it is not showing more information about the stack frames and haven't had any success in Googling it.

[petrochenkov]

It's a very recent regression (couple of weeks maybe), I observe it too.

[alexcrichton]

@skiwi2 do you have some sample code that could be used to reproduce this?

[skiwi2]

I'm running the following code: https://gist.github.com/skiwi2/ce188c7d3b13fe3e3dbdb5c5f0752cd1 (Please don't mind the quality)

[alexcrichton]

I was unfortunately unable to reproduce, @skiwi2 can you also gist the output of rustc -vV as well as cargo -V?

[alexcrichton]

Ah and also, the panic message (e.g. the full output of one compile) would also be useful

[skiwi2]

@alexcrichton What exactly do you mean by your last request? Do you want the program output (including logging statements), or some compilation output?

[skiwi2]

The rustc and Cargo info files are up at https://gist.github.com/skiwi2/be1a8bf2171f3c1114a5fa65933e6732

[alexcrichton]

@skiwi2 oh just along the lines of gisting the entire error (from the invocation of rustc/cargo all the way through to the next prompt). It looks like the snippet above may just be a subset? The panic message may be enough, but can't hurt to have more output!

[retep998]

#33554 was merged on May 14, your rustc is from May 18, could that have caused the regression perhaps?

[alexcrichton]

Oh! I apologize, I thought this was about an ICE not for a normal panic (which this appears to be about). In that case, yes, it's likely closely related to #33554, which was implemented for security purposes.

[retep998]

In the meantime if you do want backtraces and don't mind installing VC++ you can always use the x86_64-pc-windows-msvc version of Rust.

[DoumanAsh]

Having the same issue on current stable gnu toolchain

[abonander]

This is still occurring on recent nightlies: https://www.reddit.com/r/rust/comments/4zgzfk/is_there_an_unwrap_in_macro_form/d6vrvuw

[ruabmbua]

I have the same problem too on newest gnu nightly and stable.
Could someone look into fixing that? It is quiet annoying, when I have to use gdb for my cargo test cases, to actually find the panicing code.

Edit:
msvc is not an option for me