detach process failed: File not found

[cwen0]

[2021-01-15 09:26:19.390428 +00:00] INFO [toda::ptrace] src/ptrace/mod.rs:309: deteching process 599 failed with error: File not found: /proc/599/stat

Stack backtrace:
   0: anyhow::error::<impl core::convert::From<E> for anyhow::Error>::from
             at ./root/.cargo/registry/src/github.com-1ecc6299db9ec823/anyhow-1.0.31/src/backtrace.rs:26
      toda::ptrace::PtraceManager::detach
             at src/ptrace/mod.rs:86
   1: <toda::ptrace::TracedProcess as core::ops::drop::Drop>::drop::{{closure}}
             at src/ptrace/mod.rs:308
      std::thread::local::LocalKey<T>::try_with
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libstd/thread/local.rs:263
      std::thread::local::LocalKey<T>::with
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libstd/thread/local.rs:239
      <toda::ptrace::TracedProcess as core::ops::drop::Drop>::drop
             at src/ptrace/mod.rs:308
   2: core::ptr::drop_in_place
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/ptr/mod.rs:184
      toda::replacer::mmap_replacer::MmapReplacer::prepare::{{closure}}
             at src/replacer/mmap_replacer.rs:296
      core::ops::function::impls::<impl core::ops::function::FnMut<A> for &mut F>::call_mut
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/ops/function.rs:275
   3: core::iter::traits::iterator::Iterator::find_map::check::{{closure}}
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/iter/traits/iterator.rs:2258
      core::iter::adapters::filter_try_fold::{{closure}}
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/iter/adapters/mod.rs:979
      core::iter::traits::iterator::Iterator::try_fold
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/iter/traits/iterator.rs:1889
      <core::iter::adapters::Filter<I,P> as core::iter::traits::iterator::Iterator>::try_fold
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/iter/adapters/mod.rs:1028
      core::iter::traits::iterator::Iterator::find_map
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/iter/traits/iterator.rs:2264
      <core::iter::adapters::FilterMap<I,F> as core::iter::traits::iterator::Iterator>::next
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/iter/adapters/mod.rs:1128
      <core::iter::adapters::Map<I,F> as core::iter::traits::iterator::Iterator>::next
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/iter/adapters/mod.rs:849
      <core::iter::adapters::fuse::Fuse<I> as core::iter::adapters::fuse::FuseImpl<I>>::next
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/iter/adapters/fuse.rs:403
      <core::iter::adapters::fuse::Fuse<I> as core::iter::traits::iterator::Iterator>::next
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/iter/adapters/fuse.rs:69
      <core::iter::adapters::flatten::FlattenCompat<I,U> as core::iter::traits::iterator::Iterator>::next
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/iter/adapters/flatten.rs:272
      <core::iter::adapters::flatten::FlatMap<I,U,F> as core::iter::traits::iterator::Iterator>::next
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/iter/adapters/flatten.rs:55
      itertools::groupbylazy::GroupInner<K,I,F>::next_element
             at ./root/.cargo/registry/src/github.com-1ecc6299db9ec823/itertools-0.9.0/src/groupbylazy.rs:146
      itertools::groupbylazy::GroupInner<K,I,F>::step_current
             at ./root/.cargo/registry/src/github.com-1ecc6299db9ec823/itertools-0.9.0/src/groupbylazy.rs:217
      itertools::groupbylazy::GroupInner<K,I,F>::step
             at ./root/.cargo/registry/src/github.com-1ecc6299db9ec823/itertools-0.9.0/src/groupbylazy.rs:101
      <itertools::groupbylazy::Groups<K,I,F> as core::iter::traits::iterator::Iterator>::next
             at ./root/.cargo/registry/src/github.com-1ecc6299db9ec823/itertools-0.9.0/src/groupbylazy.rs:379
      core::iter::traits::iterator::Iterator::fold
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/iter/traits/iterator.rs:2021
      <core::iter::adapters::FilterMap<I,F> as core::iter::traits::iterator::Iterator>::fold
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/iter/adapters/mod.rs:1152
      <core::iter::adapters::Map<I,F> as core::iter::traits::iterator::Iterator>::fold
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/iter/adapters/mod.rs:870
   4: <core::iter::adapters::FilterMap<I,F> as core::iter::traits::iterator::Iterator>::fold
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/iter/adapters/mod.rs:1152
      core::iter::traits::iterator::Iterator::for_each
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/iter/traits/iterator.rs:658
      <hashbrown::map::HashMap<K,V,S> as core::iter::traits::collect::Extend<(K,V)>>::extend
             at ./cargo/registry/src/github.com-1ecc6299db9ec823/hashbrown-0.6.2/src/map.rs:2578
      <std::collections::hash::map::HashMap<K,V,S> as core::iter::traits::collect::Extend<(K,V)>>::extend
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libstd/collections/hash/map.rs:2427
      <std::collections::hash::map::HashMap<K,V,S> as core::iter::traits::collect::FromIterator<(K,V)>>::from_iter
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libstd/collections/hash/map.rs:2412
      core::iter::traits::iterator::Iterator::collect
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libcore/iter/traits/iterator.rs:1671
      toda::replacer::mmap_replacer::MmapReplacer::prepare
             at src/replacer/mmap_replacer.rs:288
   5: toda::replacer::UnionReplacer::prepare
             at src/replacer/mod.rs:42
   6: toda::resume
             at src/main.rs:101
      toda::main
             at src/main.rs:146
   7: std::rt::lang_start::{{closure}}
             at ./rustc/16957bd4d3a5377263f76ed74c572aad8e4b7e59/src/libstd/rt.rs:67
   8: std::rt::lang_start_internal::{{closure}}
             at src/libstd/rt.rs:52
      std::panicking::try::do_call
             at src/libstd/panicking.rs:342
      std::panicking::try
             at src/libstd/panicking.rs:319
      std::panic::catch_unwind
             at src/libstd/panic.rs:394
      std::rt::lang_start_internal
             at src/libstd/rt.rs:51
   9: main
  10: <unknown>
  11: _start