Panics after pipe breaks

[eliihen]

thread '<unnamed>' panicked at 'failed printing to stdout: Broken pipe (os error 32)', /checkout/src/libstd/io/stdio.rs:690:9
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
stack backtrace:
   0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
             at /checkout/src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
   1: std::sys_common::backtrace::print
             at /checkout/src/libstd/sys_common/backtrace.rs:68
             at /checkout/src/libstd/sys_common/backtrace.rs:57
   2: std::panicking::default_hook::{{closure}}
             at /checkout/src/libstd/panicking.rs:381
   3: std::panicking::default_hook
             at /checkout/src/libstd/panicking.rs:397
   4: std::panicking::rust_panic_with_hook
             at /checkout/src/libstd/panicking.rs:577
   5: std::panicking::begin_panic
             at /checkout/src/libstd/panicking.rs:538
   6: std::panicking::begin_panic_fmt
             at /checkout/src/libstd/panicking.rs:522
   7: std::io::stdio::_print
             at /checkout/src/libstd/io/stdio.rs:690
             at /checkout/src/libstd/io/stdio.rs:699
   8: wurl_tools::add_to_pool::{{closure}}
   9: scheduled_thread_pool::Worker::run_job
  10: std::panicking::try::do_call
  11: __rust_maybe_catch_panic
             at /checkout/src/libpanic_unwind/lib.rs:101
  12: scheduled_thread_pool::Worker::run