pkg/front_end/testcases/general/control_flow_collection.dart:13:31: Context: Write to i@354
    for (int i = 11; i <= 14; ++i) i,
                              ^^
pkg/front_end/testcases/general/control_flow_collection.dart:22:31: Context: Write to i@354
    for (int i = 11; i <= 14; ++i) i,
                              ^^
pkg/front_end/testcases/general/control_flow_collection.dart:31:31: Context: Write to i@354
    for (int i = 11; i <= 14; ++i) i: i,
                              ^^