Show backtraces for CI crashes (#14081)

I only just realized that we can get backtraces for crashes with
`RUST_BACKTRACE: 1`, even non-panics
(https://github.com/astral-sh/uv/pull/14079). This is much better than
trying to analyze crash dumps.

.github/workflows/ci.yml

@@ -14,8 +14,9 @@ env:
   CARGO_INCREMENTAL: 0
   CARGO_NET_RETRY: 10
   CARGO_TERM_COLOR: always
-  RUSTUP_MAX_RETRIES: 10
   PYTHON_VERSION: "3.12"
+  RUSTUP_MAX_RETRIES: 10
+  RUST_BACKTRACE: 1
 
 jobs:
   determine_changes:
@@ -295,23 +296,7 @@ jobs:
         with:
           tool: cargo-nextest
 
-      # Get crash dumps to debug the `exit_code: -1073741819` failures
-      - name: Configure crash dumps
-        if: runner.os == 'Windows'
-        shell: powershell
-        run: |
-          $dumps = "$env:GITHUB_WORKSPACE\dumps"
-          New-Item -Path $dumps -ItemType Directory -Force
-
-          # https://github.com/microsoft/terminal/wiki/Troubleshooting-Tips#capture-automatically
-          $reg = "HKLM:\SOFTWARE\Microsoft\Windows\Windows Error Reporting\LocalDumps"
-          New-Item -Path $reg -Force | Out-Null
-          Set-ItemProperty -Path $reg -Name "DumpFolder" -Value $dumps
-          Set-ItemProperty -Path $reg -Name "DumpType" -Value 2
-
       - name: "Cargo test"
-        id: test
-        continue-on-error: true
         working-directory: ${{ env.UV_WORKSPACE }}
         env:
           # Avoid permission errors during concurrent tests
@@ -325,42 +310,6 @@ jobs:
             --workspace \
             --status-level skip --failure-output immediate-final --no-fail-fast -j 20 --final-status-level slow
 
-      # Get crash dumps to debug the `exit_code: -1073741819` failures (contd.)
-      - name: Analyze crashes
-        if: steps.test.outcome == 'failure'
-        shell: powershell
-        run: |
-          $dumps = Get-ChildItem "$env:GITHUB_WORKSPACE\dumps\*.dmp" -ErrorAction SilentlyContinue
-          if (!$dumps) { exit 0 }
-
-          Write-Host "Found $($dumps.Count) crash dump(s)"
-
-          # Download cdb if needed
-          $cdb = "C:\Program Files (x86)\Windows Kits\10\Debuggers\x64\cdb.exe"
-          if (!(Test-Path $cdb)) {
-            # https://github.com/microsoft/react-native-windows/blob/f1570a5ef1c4fc1e78d0a0ad5af848ab91a4061c/vnext/Scripts/Analyze-Crash.ps1#L44-L56
-            Invoke-WebRequest "https://go.microsoft.com/fwlink/?linkid=2173743" -OutFile "$env:TEMP\sdk.exe"
-            Start-Process "$env:TEMP\sdk.exe" -ArgumentList "/features OptionId.WindowsDesktopDebuggers /quiet" -Wait
-          }
-
-          # Analyze each dump
-          foreach ($dump in $dumps) {
-            Write-Host "`n=== $($dump.Name) ==="
-            & $cdb -z $dump -c "!analyze -v; .ecxr; k; q" 2>&1 | Select-String -Pattern "(ExceptionCode:|SYMBOL_NAME:|IMAGE_NAME:|STACK_TEXT:)" -Context 0,2
-          }
-
-      - name: Upload crash dumps
-        if: steps.test.outcome == 'failure'
-        uses: actions/upload-artifact@ea165f8d65b6e75b540449e92b4886f43607fa02 # v4.6.2
-        with:
-          name: crash-dumps-${{ github.run_number }}
-          path: dumps/*.dmp
-          if-no-files-found: ignore
-
-      - name: Fail if tests failed
-        if: steps.test.outcome == 'failure'
-        run: exit 1
-
   # Separate jobs for the nightly crate
   windows-trampoline-check:
     timeout-minutes: 15