Intermittent crash in osmesa during webgl tests

[jdm]

  ▶ CRASH [expected OK] /_webgl/conformance/ogles/GL/struct/struct_009_to_016.html
  │ 
  │ _RegisterApplication(), FAILED TO establish the default connection to the WindowServer, _CGSDefaultConnection() is NULL.
  │ 
  │ 
  │ 
  │ Stack trace for thread "WebGL thread"
  │ stack backtrace:
  │    0: backtrace::backtrace::trace
  │    1: backtrace::capture::Backtrace::new
  │    2: servo::install_crash_handler::handler
  │    3: _sigtramp
  │    4: _ZNK9glsl_type12is_anonymousEv
  │    5: _ZN20ast_struct_specifier3hirEP9exec_listP22_mesa_glsl_parse_state
  │    6: _ZN18ast_type_specifier3hirEP9exec_listP22_mesa_glsl_parse_state
  │    7: _ZN19ast_declarator_list3hirEP9exec_listP22_mesa_glsl_parse_state
  │    8: _Z16_mesa_ast_to_hirP9exec_listP22_mesa_glsl_parse_state
  │    9: _mesa_glsl_compile_shader
  │   10: _mesa_compile_shader
  │   11: canvas::webgl_thread::WebGLImpl::apply
  │   12: _ZN6canvas12webgl_thread11WebGLThread10handle_msg17h2d546166fe68e884E.llvm.12613797593255468663
  │   13: canvas::webgl_thread::WebGLThread::process
  │   14: _ZN3std10sys_common9backtrace28__rust_begin_short_backtrace17hc4cfa3fb2e2d0038E.llvm.3031988519581157554
  │   15: _ZN3std9panicking3try7do_call17h38ef52c133672c3bE.llvm.3273631090423034174
  │   16: __rust_maybe_catch_panic
  │   17: core::ops::function::FnOnce::call_once{{vtable.shim}}
  │   18: <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once
  │   19: std::sys::unix::thread::Thread::new::thread_start
  │   20: _pthread_body
  │   21: _pthread_start
  └ 

[jdm]

  ▶ CRASH [expected OK] /_webgl/conformance/context/context-no-alpha-fbo-with-alpha.html
  │ 
  │ 
  │ 
  │ 
  │ Stack trace for thread "WebGL thread"
  │ stack backtrace:
  │    0: <servo::backtrace::Print as core::fmt::Debug>::fmt
  │    1: core::fmt::write
  │    2: <std::io::stdio::Stdout as std::io::Write>::write_fmt
  │    3: std::io::stdio::_print
  │    4: servo::backtrace::print
  │    5: servo::install_crash_handler::handler
  │    6: _sigtramp
  │    7: pipe_put_tile_raw
  │    8: pipe_put_tile_rgba_format
  │    9: sp_flush_tile
  │   10: sp_flush_tile_cache
  │   11: softpipe_flush
  │   12: st_glFlush
  │   13: _mesa_make_current
  │   14: st_api_make_current
  │   15: OSMesaMakeCurrent
  │   16: osmesa_sys::OSMesaMakeCurrent
  │   17: surfman::platform::generic::universal::context::<impl surfman::platform::generic::universal::device::Device>::make_context_current
  │   18: _ZN6canvas12webgl_thread11WebGLThread10handle_msg17h81e3238f2f2dbd20E.llvm.11223280875707098038
  │   19: canvas::webgl_thread::WebGLThread::process
  │   20: std::sys_common::backtrace::__rust_begin_short_backtrace
  │   21: _ZN3std9panicking3try7do_call17hb4b13999381678e7E.llvm.2259798862167092714
  │   22: __rust_maybe_catch_panic
  │   23: core::ops::function::FnOnce::call_once{{vtable.shim}}
  │   24: <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once
  │   25: std::sys::unix::thread::Thread::new::thread_start
  │   26: _pthread_body
  │   27: _pthread_start

[SimonSapin]

OSMesa-src is no longer used since #25853, is this still relevant?

[jdm]

No.