message: Use log::set_logger instead of set_logger_racy
diff: -use log::{set_logger_racy, set_max_level, LevelFilter, Metadata, Record};
  +use log::{set_max_level, LevelFilter, Metadata, Record};
  /// Data structure to filter kernel messages
  struct KernelLogger;
  @@ -25,9 +25,7 @@ impl log::Log for KernelLogger {
  }
  pub unsafe fn init() {
  - unsafe {
  - set_logger_racy(&KernelLogger).expect("Can't initialize logger");
  - }
  + log::set_logger(&KernelLogger).expect("Can't initialize logger");
  // Determines LevelFilter at compile time
  let log_level: Option<&'static str> = option_env!("HERMIT_LOG_LEVEL_FILTER");
  let max_level: LevelFilter = match log_level {
  