Lines       Copies     Function name
  -----       ------     -------------
  351 (100%)  25 (100%)  (TOTAL)
   50 (14.2%)  1 (4.0%)  core::fmt::Arguments::new_v1
   38 (10.8%)  1 (4.0%)  core::time::Duration::new
   34 (9.7%)   1 (4.0%)  core::num::<impl u64>::overflowing_add
   32 (9.1%)   1 (4.0%)  core::num::<impl u64>::checked_add
   28 (8.0%)   1 (4.0%)  <backoff::backoff::Constant as core::fmt::Debug>::fmt
   19 (5.4%)   1 (4.0%)  <backoff::backoff::Stop as core::fmt::Debug>::fmt
   19 (5.4%)   1 (4.0%)  <backoff::backoff::Zero as core::fmt::Debug>::fmt
   19 (5.4%)   1 (4.0%)  <backoff::clock::SystemClock as core::fmt::Debug>::fmt
   16 (4.6%)   1 (4.0%)  <core::time::Duration as core::default::Default>::default
   15 (4.3%)   1 (4.0%)  backoff::exponential::duration_to_nanos
   13 (3.7%)   1 (4.0%)  <backoff::backoff::Constant as backoff::backoff::Backoff>::next_backoff
   13 (3.7%)   1 (4.0%)  <backoff::backoff::Zero as backoff::backoff::Backoff>::next_backoff
   12 (3.4%)   1 (4.0%)  backoff::backoff::Constant::new
   12 (3.4%)   1 (4.0%)  backoff::exponential::nanos_to_duration
    7 (2.0%)   1 (4.0%)  <backoff::clock::SystemClock as backoff::clock::Clock>::now
    4 (1.1%)   1 (4.0%)  <&T as core::fmt::Debug>::fmt
    3 (0.9%)   1 (4.0%)  <backoff::backoff::Stop as backoff::backoff::Backoff>::next_backoff
    3 (0.9%)   1 (4.0%)  <backoff::retry::NoopNotify as core::fmt::Debug>::fmt
    3 (0.9%)   1 (4.0%)  <backoff::retry::ThreadSleep as backoff::retry::Sleep>::sleep
    3 (0.9%)   1 (4.0%)  core::time::Duration::as_secs
    3 (0.9%)   1 (4.0%)  core::time::Duration::subsec_nanos
    2 (0.6%)   1 (4.0%)  core::convert::num::<impl core::convert::From<u32> for f64>::from
    1 (0.3%)   1 (4.0%)  <u32 as core::default::Default>::default
    1 (0.3%)   1 (4.0%)  <u64 as core::default::Default>::default
    1 (0.3%)   1 (4.0%)  core::ptr::drop_in_place<&core::time::Duration>