message: Set panic=abort for the build system
  This saves about 60ms of build time
diff: # This block is ignored by rustc
  set -e
  echo "[BUILD] y.rs" 1>&2
  -rustc $0 -o ${0/.rs/.bin} -Cdebuginfo=1 --edition 2021
  +rustc $0 -o ${0/.rs/.bin} -Cdebuginfo=1 --edition 2021 -Cpanic=abort
  exec ${0/.rs/.bin} $@
  */
  