thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value:

[tm-nihonsuki]

Builds okay, but when run I get the following:

thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: "Couldn\'t find any pixel format that matches the criterias."', /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libcore/result.rs:868
stack backtrace:
   1:     0x55dae5c5871c - std::sys::imp::backtrace::tracing::imp::write::hf33ae72d0baa11ed
                        at /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:42
   2:     0x55dae5c5b60e - std::panicking::default_hook::{{closure}}::h59672b733cc6a455
                        at /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libstd/panicking.rs:351
   3:     0x55dae5c5b214 - std::panicking::default_hook::h1670459d2f3f8843
                        at /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libstd/panicking.rs:367
   4:     0x55dae5c5baab - std::panicking::rust_panic_with_hook::hcf0ddb069e7beee7
                        at /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libstd/panicking.rs:555
   5:     0x55dae5c5b944 - std::panicking::begin_panic::hd6eb68e27bdf6140
                        at /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libstd/panicking.rs:517
   6:     0x55dae5c5b869 - std::panicking::begin_panic_fmt::hfea5965948b877f8
                        at /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libstd/panicking.rs:501
   7:     0x55dae5c5b7f7 - rust_begin_unwind
                        at /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libstd/panicking.rs:477
   8:     0x55dae5c81d8d - core::panicking::panic_fmt::hc0f6d7b2c300cdd9
                        at /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libcore/panicking.rs:69
   9:     0x55dae5aa332b - core::result::unwrap_failed::h8a94a56502743d2d
                        at /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libcore/macros.rs:29
  10:     0x55dae5aa1990 - <core::result::Result<T, E>>::unwrap::hfec4dff162fe3e84
                        at /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libcore/result.rs:745
  11:     0x55dae5abcbc1 - spinning_square::main::h02d59ab51d564f5f
                        at /home/tony/code/rust/gametest/src/main.rs:53
  12:     0x55dae5c6253a - __rust_maybe_catch_panic
                        at /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libpanic_unwind/lib.rs:98
  13:     0x55dae5c5bfb6 - std::rt::lang_start::hd7c880a37a646e81
                        at /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libstd/panicking.rs:436
                        at /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libstd/panic.rs:361
                        at /buildslave/rust-buildbot/slave/stable-dist-rustc-linux/build/src/libstd/rt.rs:57
  14:     0x55dae5abcff2 - main
  15:     0x7fe472c78510 - __libc_start_main
  16:     0x55dae5a9e189 - _start
  17:                0x0 - <unknown>

Please let me know any other information you may need.

[vitvakatu]

Hello, @tm-nihonsuki ! It looks like issue with your video card. I will check my own system in a few hours. Please give us basic info about your system - OS, graphic card, your video drivers (in case of Linux) Moreover please write result of rustup show (or provide version of rustc that you use)

[tm-nihonsuki]

OS is: 4.10.8-1-MANJARO #1 SMP PREEMPT Fri Mar 31 18:50:09 UTC 2017 x86_64 GNU/Linux Graphic card is:

*-display
    description: VGA compatible controller
    product: Richland [Radeon HD 8650G]
    vendor: Advanced Micro Devices, Inc. [AMD/ATI]
    physical id: 1
    bus info: pci@0000:00:01.0
    version: 00
    width: 32 bits
    clock: 33MHz
    capabilities: pm pciexpress msi vga_controller bus_master cap_list rom
    configuration: driver=fglrx_pci latency=0
    resources: irq:35 memory:d0000000-dfffffff ioport:5000(size=256) memory:f0400000-f043ffff memory:c0000-dffff

rustup show gives:

Default host: x86_64-unknown-linux-gnu

stable-x86_64-unknown-linux-gnu (default)
rustc 1.16.0 (30cf806ef 2017-03-10)

Hope this helps.

[vitvakatu]

Well, I have the same error :smile: I'll try to find out the reason, but I'm not sure in success.

[vitvakatu]

Okay, @tm-nihonsuki it's definitely problem with your system configuration. I suppose you do not have proper video drivers installed. Yesterday I had the same problem on Nixos. But today I installed Void Linux with proper video drivers and everything goes fine! I'm deleting labels, cause it's not related to Piston itself. Please message me if you solve this problem, I'll close the issue.

[tm-nihonsuki]

What's a 'proper' video driver? The fglrx driver has worked fine on debian and arch based systems with every item of software or IDE I've installed in the past six years.

[vitvakatu]

@tm-nihonsuki the problem is, I don't know, because I have Nvidia video card. Did you try to play some games under linux? I guess if games works well then video drivers are properly installed.

[tm-nihonsuki]

I have about eighty Linux games installed, including Unity/Mono developed and Steam distributed games. I am also able to run games under wine. The fglrx drivers are very well established and, though proprietary, are well tested on many Linux distributions.

[vitvakatu]

@tm-nihonsuki well, it's strange. I'm absolutely sure that it's related to drivers.

[tm-nihonsuki]

What, in the information I've provided, makes you absolutely sure?

[vitvakatu]

I faced the same problem without drivers, but I cannot reproduce it with drivers installed. Other users of glutin and winit didn't face this issue (at least, there is no open issues in repos). Do you have other ideas about it? Can you try to run winit and glutin examples?

[tm-nihonsuki]

The examples from the winit and glutin github pages build and run correctly.

[vitvakatu]

Well, it changes the situation. What versions of winit and glutin did you use?

[tm-nihonsuki]

The glutin example builds version 0.7.4 and depends on winit version 0.5.10. I add the winit="0.5.10" dependency to the winit example to build and run it.

[n-pochet]

I also got the exact same issue:

thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: "Couldn\'t find any pixel format that matches the criterias."', /checkout/src/libcore/result.rs:860:4
stack backtrace:
   0: std::sys::imp::backtrace::tracing::imp::unwind_backtrace
             at /checkout/src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
   1: std::sys_common::backtrace::_print
             at /checkout/src/libstd/sys_common/backtrace.rs:71
   2: std::panicking::default_hook::{{closure}}
             at /checkout/src/libstd/sys_common/backtrace.rs:60
             at /checkout/src/libstd/panicking.rs:380
   3: std::panicking::default_hook
             at /checkout/src/libstd/panicking.rs:396
   4: std::panicking::rust_panic_with_hook
             at /checkout/src/libstd/panicking.rs:611
   5: std::panicking::begin_panic_new
             at /checkout/src/libstd/panicking.rs:553
   6: std::panicking::begin_panic_fmt
             at /checkout/src/libstd/panicking.rs:521
   7: rust_begin_unwind
             at /checkout/src/libstd/panicking.rs:497
   8: core::panicking::panic_fmt
             at /checkout/src/libcore/panicking.rs:92
   9: core::result::unwrap_failed
             at /checkout/src/libcore/macros.rs:41
  10: <core::result::Result<T, E>>::unwrap
             at /checkout/src/libcore/result.rs:738
  11: spinning_square::main
             at src/main.rs:50
  12: __rust_maybe_catch_panic
             at /checkout/src/libpanic_unwind/lib.rs:98
  13: std::rt::lang_start
             at /checkout/src/libstd/panicking.rs:458
             at /checkout/src/libstd/panic.rs:361
             at /checkout/src/libstd/rt.rs:59
  14: main
  15: __libc_start_main
  16: _start

rustup show:

Default host: x86_64-unknown-linux-gnu

stable-x86_64-unknown-linux-gnu (default)
rustc 1.20.0 (f3d6973f4 2017-08-27)

I also tried the glutin and winit examples and I can run them with no issue. Any idea?

[n-pochet]

As explained here: https://github.com/PistonDevelopers/piston/issues/1202 it now works by adding srgb(false) like:

let mut window: Window = WindowSettings::new(
        "spinning-square",
        [200, 200]
        )
        .opengl(opengl)
        .exit_on_esc(true)
        .srgb(false)
        .build()
        .unwrap();

[tsehao-hu]

Thanks, @n-pochet , it helps.

[Cxarli]

This seems to have been fixed with the latest mesa 18.*. See https://github.com/PistonDevelopers/piston/issues/1202 for more information.