help ! my rocket project compile error.

[oldtree2008]

Hello, I am new to Rocket. ask for help.

Compiling rocket v0.3.16
thread 'main' panicked at 'could not initialize thread_rng: All entropy sources failed (permanently unavailable); cause: OS RNG not yet seeded (not ready yet); cause: Resource temporarily unavailable (os error 11)', /cargo/registry/src/github.com-1ecc6299db9ec823/rand-0.5.4/src/rngs/thread.rs:84:17
Compiling rocket_codegen v0.3.16
stack backtrace:
0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
1: std::sys_common::backtrace::print
at libstd/sys_common/backtrace.rs:71
at libstd/sys_common/backtrace.rs:59
2: std::panicking::default_hook::{{closure}}
at libstd/panicking.rs:211
3: std::panicking::default_hook
at libstd/panicking.rs:227
4: rustc::util::common::panic_hook
5: std::panicking::rust_panic_with_hook
at libstd/panicking.rs:481
6: std::panicking::continue_panic_fmt
at libstd/panicking.rs:391
7: std::panicking::begin_panic_fmt 7: std::panicking::begin_panic_fmt
at libstd/panicking.rs:346
8: rand::rngs::thread::THREAD_RNG_KEY::__init::{{closure}}
9: rand::rngs::thread::THREAD_RNG_KEY::__init
10: <std::thread::local::LocalKey>::with
11: tempfile::util::tmpname
12: tempfile::util::create_helper
13: tempfile::Builder::tempdir
14: rustc_codegen_llvm::back::link::link_binary
15: <rustc_codegen_llvm::LlvmCodegenBackend as rustc_codegen_utils::codegen_backend::CodegenBackend>::join_codegen_and_link::{{closure}}
16: rustc::util::common::time
17: <rustc_codegen_llvm::LlvmCodegenBackend as rustc_codegen_utils::codegen_backend::CodegenBackend>::join_codegen_and_link
18: rustc_driver::driver::compile_input
19: rustc_driver::run_compiler_with_pool
20: <scoped_tls::ScopedKey>::set
21: rustc_driver::run_compiler
22: syntax::with_globals
23: __rust_maybe_catch_panic
at libpanic_unwind/lib.rs:103
24: rustc_driver::run
25: rustc_driver::main
26: std::rt::lang_start::{{closure}}
27: std::panicking::try::do_call
at libstd/rt.rs:59
at libstd/panicking.rs:310
28: __rust_maybe_catch_panic
at libpanic_unwind/lib.rs:103
29: std::rt::lang_start_internal
at libstd/panicking.rs:289
at libstd/panic.rs:392
at libstd/rt.rs:58
30: main
31: __libc_start_main
32:
query stack during panic:
end of query stack

error: internal compiler error: unexpected panic

note: the compiler unexpectedly panicked. this is a bug.

note: we would appreciate a bug report: https://github.com/rust-lang/rust/blob/master/CONTRIBUTING.md#bug-reports

note: rustc 1.30.0-nightly (0f063aef6 2018-09-03) running on x86_64-unknown-linux-gnu

note: compiler flags: -C debuginfo=2 --crate-type bin

note: some of the compiler flags provided by cargo are hidden

[jebrosen]

All entropy sources failed (permanently unavailable); cause: OS RNG not yet seeded (not ready yet); cause: Resource temporarily unavailable (os error 11)'

This indicates an OS-specific problem with the system random number generator. Perhaps there is not enough entropy in the pool.

What operating system are you using?

[oldtree2008]

Linux iZ25u6wl3o6Z 3.10.0-514.26.2.el7.x86_64 #1 SMP Tue Jul 4 15:04:05 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

[oldtree2008]

I write a very simple project, also compile error. but before this, it can work.

[oldtree2008]

My helloworld rocket project first compile success. but I cargo clean,then cargo build . then compile error.
It's very strange.

[jebrosen]

From your earlier comment it looks like you are using CentOS. Installing and configuring haveged or rngd (from the rng-tools package) may help provide more entropy, especially if this machine is a server.

I'm going to close this since it doesn't appear to be caused by or related to Rocket itself.