Try to fix i686-pc-windows-gnu

Author: dpaoliello

ci/run.sh

@@ -45,6 +45,9 @@ esac
 NM=$(find $(rustc --print sysroot) \( -name llvm-nm -o -name llvm-nm.exe \) )
 if [ "$NM" = "" ]; then
   NM=${PREFIX}nm
+else
+  default_toolchain=$(rustup default | cut -d ' ' -f 1)
+  NM="rustup run $default_toolchain $NM"
 fi
 
 # Look out for duplicated symbols when we include the compiler-rt (C) implementation