Yet more hacking. This sort of makes it work for rust

python3/vimspector/code.py

@@ -59,10 +59,13 @@ class CodeView( object  ):
     if not frame or not frame.get( 'source' ):
       return False
 
+    if 'path' not in frame[ 'source' ]:
+      return False
+
     vim.current.window = self._window
 
     buffer_number = int( vim.eval( 'bufnr( "{0}", 1 )'.format(
-      frame[ 'source' ].get( 'path', '???' )  ) ) )
+      frame[ 'source' ][ 'path' ] ) ) )
 
     try:
       vim.command( 'bu {0}'.format( buffer_number ) )
@@ -149,6 +152,9 @@ class CodeView( object  ):
 
     for file_name, breakpoints in self._breakpoints.items():
       for breakpoint in breakpoints:
+        if 'line' not in breakpoint:
+          continue
+
         sign_id = self._next_sign_id
         self._next_sign_id += 1
         self._signs[ 'breakpoints' ].append( sign_id )

python3/vimspector/debug_adapter_connection.py

@@ -138,11 +138,15 @@ class DebugAdapterConnection( object ):
         if handler:
           handler( message )
       else:
-        self._logger.error(
-          'Request failed: {0}'.format(
-            message.get( 'message' ) or '<silence>' ) )
-        utils.UserMessage( 'Request failed: {0}'.format( message[ 'message' ] ),
+        reason = (
+          message.get( 'body', {} ).get( 'error', {} ).get( 'format' ) or
+          message.get( 'message' ) or
+          'no reason' )
+
+        self._logger.error( 'Request failed: {0}'.format( reason ) )
+        utils.UserMessage( 'Request failed: {0}'.format( reason ),
                            persist = True )
+
     elif message[ 'type' ] == 'event':
       method = 'OnEvent_' + message[ 'event' ]
       if method in dir( self._handler ):

python3/vimspector/debug_session.py

@@ -525,6 +525,6 @@ class DebugSession( object ):
 
     utils.UserMessage( 'Paused in thread {0} due to {1}'.format(
       event.get( 'threadId', '<unknown>' ),
-      event.get( 'description', event[ 'reason' ] ) ) )
+      event.get( 'description', event.get( 'reason', '' ) ) ) )
 
     self._stackTraceView.OnStopped( event )

python3/vimspector/stack_trace.py

@@ -182,7 +182,7 @@ class StackTraceView( object ):
     stackFrames = thread[ '_frames' ]
 
     for frame in stackFrames:
-      if frame[ 'source' ]:
+      if frame.get( 'source' ):
         source = frame[ 'source' ]
       else:
         source = { 'name': '<unknown>' }