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internal error: entered unreachable code #100

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alanhoff opened this issue Nov 19, 2016 · 0 comments
Closed

internal error: entered unreachable code #100

alanhoff opened this issue Nov 19, 2016 · 0 comments

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@alanhoff
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alanhoff commented Nov 19, 2016 •
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Hello there, I'm using OSX El Captain and some times when files are created and removed really fast the code reaches this unreachable!() . It doean't happens all the time but an easy way is to monitor a Node.js project while rm -rf ./node_modules && npm install, you will easly receive +30K events and the error almost always happens.

This is my environment:

cargo 0.15.0-nightly (a9c23dd 2016-11-15)
rustc 1.15.0-nightly (43006fcea 2016-11-15)

The stack trace is this:

thread '<unnamed>' panicked at 'internal error: entered unreachable code', /Users/alanhoff/.cargo/git/checkouts/notify-04e06d4ee73f48be/6f58cce7be12c9b5f92404765241541424c6e741/src/debounce/mod.rs:151
stack backtrace:
   1:        0x10b1f17aa - std::sys::imp::backtrace::tracing::imp::write::h944c02ac40aee2d7
   2:        0x10b1f3b6f - std::panicking::default_hook::{{closure}}::h6875a2976258b020
   3:        0x10b1f3817 - std::panicking::default_hook::h88ffbc5922643264
   4:        0x10b1f4036 - std::panicking::rust_panic_with_hook::ha5aed1dfc0e220e3
   5:        0x10b1841b3 - std::panicking::begin_panic::h5f0a1fd8f4de57ec
   6:        0x10b1e2f84 - notify::debounce::Debounce::check_partial_rename::h5471efb435c2dda1
   7:        0x10b1e3742 - notify::debounce::Debounce::event::h5ac2f781e05a9a46
   8:        0x10b1e1c12 - notify::debounce::EventTx::send::h1850375a0ba61046
   9:        0x10b1de360 - notify::fsevent::callback::h8dc799b35ccea274
  10:     0x7fff870b2b0a - implementation_callback_rpc
  11:     0x7fff870b06c9 - _Xcallback_rpc
  12:     0x7fff870b079d - FSEventsD2F_server
  13:     0x7fff870b5fd8 - FSEventsClientProcessMessageCallback
  14:     0x7fff86cca12b - __CFMachPortPerform
  15:     0x7fff86cca018 - __CFRUNLOOP_IS_CALLING_OUT_TO_A_SOURCE1_PERFORM_FUNCTION__
  16:     0x7fff86cc9f88 - __CFRunLoopDoSource1
  17:     0x7fff86cc19ba - __CFRunLoopRun
  18:     0x7fff86cc0ed7 - CFRunLoopRunSpecific
  19:     0x7fff86d029b0 - CFRunLoopRun
  20:        0x10b1dd688 - notify::fsevent::FsEventWatcher::run::{{closure}}::h1f26a1146180fe54
  21:        0x10b1db4da - <std::panic::AssertUnwindSafe<F> as core::ops::FnOnce<()>>::call_once::h2a906c890c327ae8
  22:        0x10b184d03 - std::panicking::try::do_call::he6db71e4883187fb
  23:        0x10b1f4e8a - __rust_maybe_catch_panic
  24:        0x10b184332 - std::panicking::try::h5e80a8d4bba11476
  25:        0x10b18203e - std::panic::catch_unwind::hd00cde07760ce1f8
  26:        0x10b183ee2 - std::thread::Builder::spawn::{{closure}}::ha40d83fe6940f3de
  27:        0x10b1b5513 - <F as alloc::boxed::FnBox<A>>::call_box::h7dc0418dee0ac1eb
  28:        0x10b1f3264 - std::sys::imp::thread::Thread::new::thread_start::h8084b1107992ae5b
  29:     0x7fff909d999c - _pthread_body
  30:     0x7fff909d9919 - _pthread_start

The code that I used is this one:

extern crate notify;

use std::env;
use notify::{RecommendedWatcher, Watcher, RecursiveMode};
use std::sync::mpsc::{channel};
use std::time::Duration;
use std::thread;

fn watch() -> notify::Result<()> {
    let (tx, rx) = channel();
    let mut watcher: RecommendedWatcher = try!(Watcher::new(tx, Duration::from_secs(2)));
    let current_dir = env::current_dir().unwrap();

    try!(watcher.watch(current_dir.clone(), RecursiveMode::Recursive));

    loop {
        match rx.try_recv() {
            Ok(event) => {
                println!("{:?}", event);
            },
            _ => thread::sleep(Duration::from_millis(10))
        };
    }
}

fn main() {
    if let Err(e) = watch() {
        println!("error: {:?}", e)
    }
}

And here is my Cargo.lock

[root]
name = "rust-notify"
version = "0.1.0"
dependencies = [
 "notify 3.0.1 (git+https://github.com/passcod/notify)",
]

[[package]]
name = "bitflags"
version = "0.4.0"
source = "registry+https://github.com/rust-lang/crates.io-index"

[[package]]
name = "bitflags"
version = "0.7.0"
source = "registry+https://github.com/rust-lang/crates.io-index"

[[package]]
name = "bytes"
version = "0.3.0"
source = "registry+https://github.com/rust-lang/crates.io-index"

[[package]]
name = "cfg-if"
version = "0.1.0"
source = "registry+https://github.com/rust-lang/crates.io-index"

[[package]]
name = "filetime"
version = "0.1.10"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
 "libc 0.2.17 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "fsevent"
version = "0.2.15"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
 "bitflags 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "fsevent-sys 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.17 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "fsevent-sys"
version = "0.1.5"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
 "libc 0.2.17 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "inotify"
version = "0.2.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
 "libc 0.2.17 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "kernel32-sys"
version = "0.2.2"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
 "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "libc"
version = "0.2.17"
source = "registry+https://github.com/rust-lang/crates.io-index"

[[package]]
name = "log"
version = "0.3.6"
source = "registry+https://github.com/rust-lang/crates.io-index"

[[package]]
name = "mio"
version = "0.5.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
 "bytes 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.17 (registry+https://github.com/rust-lang/crates.io-index)",
 "log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)",
 "miow 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
 "net2 0.2.26 (registry+https://github.com/rust-lang/crates.io-index)",
 "nix 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "slab 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)",
 "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
 "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "miow"
version = "0.1.3"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
 "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "net2 0.2.26 (registry+https://github.com/rust-lang/crates.io-index)",
 "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "net2"
version = "0.2.26"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
 "cfg-if 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.17 (registry+https://github.com/rust-lang/crates.io-index)",
 "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "nix"
version = "0.5.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
 "bitflags 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.17 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "notify"
version = "3.0.1"
source = "git+https://github.com/passcod/notify#6f58cce7be12c9b5f92404765241541424c6e741"
dependencies = [
 "bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)",
 "filetime 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)",
 "fsevent 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)",
 "fsevent-sys 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)",
 "inotify 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)",
 "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.17 (registry+https://github.com/rust-lang/crates.io-index)",
 "mio 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)",
 "time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)",
 "walkdir 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "slab"
version = "0.1.3"
source = "registry+https://github.com/rust-lang/crates.io-index"

[[package]]
name = "time"
version = "0.1.35"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
 "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "libc 0.2.17 (registry+https://github.com/rust-lang/crates.io-index)",
 "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "walkdir"
version = "0.1.8"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
 "kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)",
 "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
]

[[package]]
name = "winapi"
version = "0.2.8"
source = "registry+https://github.com/rust-lang/crates.io-index"

[[package]]
name = "winapi-build"
version = "0.1.1"
source = "registry+https://github.com/rust-lang/crates.io-index"

[[package]]
name = "ws2_32-sys"
version = "0.2.1"
source = "registry+https://github.com/rust-lang/crates.io-index"
dependencies = [
 "winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)",
 "winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)",
]

[metadata]
"checksum bitflags 0.4.0 (registry+https://github.com/rust-lang/crates.io-index)" = "8dead7461c1127cf637931a1e50934eb6eee8bff2f74433ac7909e9afcee04a3"
"checksum bitflags 0.7.0 (registry+https://github.com/rust-lang/crates.io-index)" = "aad18937a628ec6abcd26d1489012cc0e18c21798210f491af69ded9b881106d"
"checksum bytes 0.3.0 (registry+https://github.com/rust-lang/crates.io-index)" = "c129aff112dcc562970abb69e2508b40850dd24c274761bb50fb8a0067ba6c27"
"checksum cfg-if 0.1.0 (registry+https://github.com/rust-lang/crates.io-index)" = "de1e760d7b6535af4241fca8bd8adf68e2e7edacc6b29f5d399050c5e48cf88c"
"checksum filetime 0.1.10 (registry+https://github.com/rust-lang/crates.io-index)" = "5363ab8e4139b8568a6237db5248646e5a8a2f89bd5ccb02092182b11fd3e922"
"checksum fsevent 0.2.15 (registry+https://github.com/rust-lang/crates.io-index)" = "740a52ca589381d87dd0d9960555de3320aa6d408326659e3bae88be9f71a125"
"checksum fsevent-sys 0.1.5 (registry+https://github.com/rust-lang/crates.io-index)" = "72e33a926306442d961595c3a325864326ca4287795e106dae8993afe484ede6"
"checksum inotify 0.2.3 (registry+https://github.com/rust-lang/crates.io-index)" = "e8458c07bdbdaf309c80e2c3304d14c3db64e7465d4f07cf589ccb83fd0ff31a"
"checksum kernel32-sys 0.2.2 (registry+https://github.com/rust-lang/crates.io-index)" = "7507624b29483431c0ba2d82aece8ca6cdba9382bff4ddd0f7490560c056098d"
"checksum libc 0.2.17 (registry+https://github.com/rust-lang/crates.io-index)" = "044d1360593a78f5c8e5e710beccdc24ab71d1f01bc19a29bcacdba22e8475d8"
"checksum log 0.3.6 (registry+https://github.com/rust-lang/crates.io-index)" = "ab83497bf8bf4ed2a74259c1c802351fcd67a65baa86394b6ba73c36f4838054"
"checksum mio 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "a637d1ca14eacae06296a008fa7ad955347e34efcb5891cfd8ba05491a37907e"
"checksum miow 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "d5bfc6782530ac8ace97af10a540054a37126b63b0702ddaaa243b73b5745b9a"
"checksum net2 0.2.26 (registry+https://github.com/rust-lang/crates.io-index)" = "5edf9cb6be97212423aed9413dd4729d62b370b5e1c571750e882cebbbc1e3e2"
"checksum nix 0.5.1 (registry+https://github.com/rust-lang/crates.io-index)" = "bfb3ddedaa14746434a02041940495bf11325c22f6d36125d3bdd56090d50a79"
"checksum notify 3.0.1 (git+https://github.com/passcod/notify)" = "<none>"
"checksum slab 0.1.3 (registry+https://github.com/rust-lang/crates.io-index)" = "d807fd58c4181bbabed77cb3b891ba9748241a552bcc5be698faaebefc54f46e"
"checksum time 0.1.35 (registry+https://github.com/rust-lang/crates.io-index)" = "3c7ec6d62a20df54e07ab3b78b9a3932972f4b7981de295563686849eb3989af"
"checksum walkdir 0.1.8 (registry+https://github.com/rust-lang/crates.io-index)" = "c66c0b9792f0a765345452775f3adbd28dde9d33f30d13e5dcc5ae17cf6f3780"
"checksum winapi 0.2.8 (registry+https://github.com/rust-lang/crates.io-index)" = "167dc9d6949a9b857f3451275e911c3f44255842c1f7a76f33c55103a909087a"
"checksum winapi-build 0.1.1 (registry+https://github.com/rust-lang/crates.io-index)" = "2d315eee3b34aca4797b2da6b13ed88266e6d612562a0c46390af8299fc699bc"
"checksum ws2_32-sys 0.2.1 (registry+https://github.com/rust-lang/crates.io-index)" = "d59cefebd0c892fa2dd6de581e937301d8552cb44489cdff035c6187cb63fa5e"
@dfaust dfaust closed this as completed in b124c36 Nov 19, 2016
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@alanhoff