warning: unused import: `path::PathBuf`
--> crates/jni/src/vm/java_vm.rs:21:28
|
21 | use std::{os::raw::c_void, path::PathBuf};
| ^^^^^^^^^^^^^
|
= note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
warning: unused import: `Thread`
--> crates/jni/src/vm/tls_attach_guard.rs:9:14
|
9 | thread::{Thread, current},
| ^^^^^^
warning: unused import: `log::error`
--> crates/jni/src/vm/tls_attach_guard.rs:12:5
|
12 | use log::error;
| ^^^^^^^^^^
warning: unused variable: `e`
--> crates/jni/src/vm/tls_attach_guard.rs:61:20
|
61 | if let Err(e) = unsafe { self.detach_impl() } {
| ^ help: if this is intentional, prefix it with an underscore: `_e`
|
= note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
warning: missing documentation for a method
--> crates/jni/src/vm/init_args.rs:358:5
|
358 | pub fn inner_ptr(&self) -> *mut c_void {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
|
note: the lint level is defined here
--> crates/jni/src/lib.rs:1:9
|
1 | #![warn(missing_docs)]
| ^^^^^^^^^^^^
warning: missing documentation for a function
--> crates/jni/src/vm/java_vm.rs:194:5
|
194 | / pub fn JNI_CreateJavaVM(
195 | | pvm: *mut *mut sys::JavaVM,
196 | | penv: *mut *mut c_void,
197 | | args: *mut c_void,
198 | | ) -> jni::sys::jint;
| |________________________^
warning: missing documentation for an associated function
--> crates/jni/src/vm/java_vm.rs:398:5
|
398 | pub fn with_linked_jvm(args: InitArgs) -> StartJvmResult<Self> {
| ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
warning: `jni` (lib) generated 7 warnings (run `cargo fix --lib -p jni` to apply 4 suggestions)
Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.07s
Running `/home/rib/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/bin/cargo-miri runner /home/rib/src/jni-rs/jni-git-dev0/target/miri/x86_64-unknown-linux-gnu/debug/examples/miri_hello`
thread 'rustc' (847903) panicked at /rustc/873b4beb0cc726493b94c8ef21f68795c04fbbc1/compiler/rustc_const_eval/src/interpret/memory.rs:229:53:
called `Result::unwrap()` on an `Err` value: InterpErrorInfo(InterpErrorInfoInner { kind: Unsupported(Unsupported("passing an enum or union over FFI: std::result::Result<(), std::boxed::Box<dyn std::error::Error>>")), backtrace: InterpErrorBacktrace { backtrace: None } })
stack backtrace:
0: 0x7f44cebd449b - <<std[e84040df3bd3b365]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[6c6f0f72ed298c38]::fmt::Display>::fmt
1: 0x7f44cf2110e0 - core[6c6f0f72ed298c38]::fmt::write
2: 0x7f44cebeb716 - <std[e84040df3bd3b365]::sys::stdio::unix::Stderr as std[e84040df3bd3b365]::io::Write>::write_fmt
3: 0x7f44cebaa548 - std[e84040df3bd3b365]::panicking::default_hook::{closure#0}
4: 0x7f44cebc7903 - std[e84040df3bd3b365]::panicking::default_hook
5: 0x7f44cdb90f8f - std[e84040df3bd3b365]::panicking::update_hook::<alloc[d9717d1773e7bcdb]::boxed::Box<rustc_driver_impl[1d3373f79f63c38d]::install_ice_hook::{closure#1}>>::{closure#0}
6: 0x7f44cebc7be2 - std[e84040df3bd3b365]::panicking::panic_with_hook
7: 0x7f44cebaa608 - std[e84040df3bd3b365]::panicking::panic_handler::{closure#0}
8: 0x7f44ceba1359 - std[e84040df3bd3b365]::sys::backtrace::__rust_end_short_backtrace::<std[e84040df3bd3b365]::panicking::panic_handler::{closure#0}, !>
9: 0x7f44cebac06d - __rustc[d6e935dc4dcc4704]::rust_begin_unwind
10: 0x7f44cb8717ec - core[6c6f0f72ed298c38]::panicking::panic_fmt
11: 0x7f44cb33e8d2 - core[6c6f0f72ed298c38]::result::unwrap_failed
12: 0x56263df7b49f - <rustc_const_eval[30dfd147fcfea0c]::interpret::eval_context::InterpCx<miri[ad21fcb0af6d8022]::machine::MiriMachine>>::fn_ptr
13: 0x56263df0c680 - miri[ad21fcb0af6d8022]::eval::create_ecx::{closure#0}
14: 0x56263e05de46 - <rustc_const_eval[30dfd147fcfea0c]::interpret::eval_context::InterpCx<miri[ad21fcb0af6d8022]::machine::MiriMachine> as miri[ad21fcb0af6d8022]::concurrency::thread::EvalContextExt>::run_threads
15: 0x56263dfc5742 - miri[ad21fcb0af6d8022]::eval::eval_entry
16: 0x56263e10fb99 - <miri[baa462e6748e8caa]::MiriCompilerCalls as rustc_driver_impl[1d3373f79f63c38d]::Callbacks>::after_analysis
17: 0x7f44d053a68a - <rustc_interface[ffa26b8aee337d6b]::passes::create_and_enter_global_ctxt<core[6c6f0f72ed298c38]::option::Option<rustc_interface[ffa26b8aee337d6b]::queries::Linker>, rustc_driver_impl[1d3373f79f63c38d]::run_compiler::{closure#0}::{closure#2}>::{closure#2} as core[6c6f0f72ed298c38]::ops::function::FnOnce<(&rustc_session[e077b3088d2cab4d]::session::Session, rustc_middle[11be9ef6dd95cb79]::ty::context::CurrentGcx, alloc[d9717d1773e7bcdb]::sync::Arc<rustc_data_structures[be2354717932db16]::jobserver::Proxy>, &std[e84040df3bd3b365]::sync::once_lock::OnceLock<rustc_middle[11be9ef6dd95cb79]::ty::context::GlobalCtxt>, &rustc_data_structures[be2354717932db16]::sync::worker_local::WorkerLocal<rustc_middle[11be9ef6dd95cb79]::arena::Arena>, &rustc_data_structures[be2354717932db16]::sync::worker_local::WorkerLocal<rustc_hir[e6f1d3e8b67d381c]::Arena>, rustc_driver_impl[1d3373f79f63c38d]::run_compiler::{closure#0}::{closure#2})>>::call_once::{shim:vtable#0}
18: 0x7f44d0447ad0 - rustc_interface[ffa26b8aee337d6b]::interface::run_compiler::<(), rustc_driver_impl[1d3373f79f63c38d]::run_compiler::{closure#0}>::{closure#1}
19: 0x7f44d04307be - std[e84040df3bd3b365]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[ffa26b8aee337d6b]::util::run_in_thread_with_globals<rustc_interface[ffa26b8aee337d6b]::util::run_in_thread_pool_with_globals<rustc_interface[ffa26b8aee337d6b]::interface::run_compiler<(), rustc_driver_impl[1d3373f79f63c38d]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
20: 0x7f44d0430ea0 - <std[e84040df3bd3b365]::thread::lifecycle::spawn_unchecked<rustc_interface[ffa26b8aee337d6b]::util::run_in_thread_with_globals<rustc_interface[ffa26b8aee337d6b]::util::run_in_thread_pool_with_globals<rustc_interface[ffa26b8aee337d6b]::interface::run_compiler<(), rustc_driver_impl[1d3373f79f63c38d]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[6c6f0f72ed298c38]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
21: 0x7f44d0431d2c - <std[e84040df3bd3b365]::sys::thread::unix::Thread>::new::thread_start
22: 0x7f44d1cc598b - <unknown>
23: 0x7f44d1d49a0c - <unknown>
24: 0x0 - <unknown>
error: the compiler unexpectedly panicked. This is a bug
note: we would appreciate a bug report: https://github.com/rust-lang/miri/issues/new
note: please make sure that you have updated to the latest nightly
note: please attach the file at `/home/rib/src/jni-rs/jni-git-dev0/rustc-ice-2026-02-28T17_35_30-847818.txt` to your bug report
note: rustc 1.95.0-nightly (873b4beb0 2026-02-15) running on x86_64-unknown-linux-gnu
note: compiler flags: --crate-type bin -C embed-bitcode=no -C debuginfo=2 -C incremental=[REDACTED] -Z miri-native-lib=/usr/lib/jvm/java-21-openjdk/lib/server/libjvm.so -Z miri-backtrace=full
note: some of the compiler flags provided by cargo are hidden
query stack during panic:
end of query stack
Miri caused an ICE during evaluation. Here's the interpreter backtrace at the time of the panic:
thread 'rustc' (847903) panicked at src/tools/miri/src/diagnostics.rs:561:5:
assertion failed: !span.is_dummy()
stack backtrace:
0: 0x7f44cebd449b - <<std[e84040df3bd3b365]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[6c6f0f72ed298c38]::fmt::Display>::fmt
1: 0x7f44cf2110e0 - core[6c6f0f72ed298c38]::fmt::write
2: 0x7f44cebeb716 - <std[e84040df3bd3b365]::sys::stdio::unix::Stderr as std[e84040df3bd3b365]::io::Write>::write_fmt
3: 0x7f44cebaa548 - std[e84040df3bd3b365]::panicking::default_hook::{closure#0}
4: 0x7f44cebc7903 - std[e84040df3bd3b365]::panicking::default_hook
5: 0x7f44cdb90f8f - std[e84040df3bd3b365]::panicking::update_hook::<alloc[d9717d1773e7bcdb]::boxed::Box<rustc_driver_impl[1d3373f79f63c38d]::install_ice_hook::{closure#1}>>::{closure#0}
6: 0x7f44cebc7be2 - std[e84040df3bd3b365]::panicking::panic_with_hook
7: 0x7f44cebaa63a - std[e84040df3bd3b365]::panicking::panic_handler::{closure#0}
8: 0x7f44ceba1359 - std[e84040df3bd3b365]::sys::backtrace::__rust_end_short_backtrace::<std[e84040df3bd3b365]::panicking::panic_handler::{closure#0}, !>
9: 0x7f44cebac06d - __rustc[d6e935dc4dcc4704]::rust_begin_unwind
10: 0x7f44cb8717ec - core[6c6f0f72ed298c38]::panicking::panic_fmt
11: 0x7f44cb2495a2 - core[6c6f0f72ed298c38]::panicking::panic
12: 0x56263dfbdf66 - miri[ad21fcb0af6d8022]::diagnostics::report_msg
13: 0x56263e04cd5e - <rustc_const_eval[30dfd147fcfea0c]::interpret::eval_context::InterpCx<miri[ad21fcb0af6d8022]::machine::MiriMachine> as miri[ad21fcb0af6d8022]::diagnostics::EvalContextExt>::handle_ice
14: 0x56263df0ce10 - miri[ad21fcb0af6d8022]::eval::eval_entry::{closure#1}
15: 0x56263dfc7a71 - miri[ad21fcb0af6d8022]::eval::eval_entry
16: 0x56263e10fb99 - <miri[baa462e6748e8caa]::MiriCompilerCalls as rustc_driver_impl[1d3373f79f63c38d]::Callbacks>::after_analysis
17: 0x7f44d053a68a - <rustc_interface[ffa26b8aee337d6b]::passes::create_and_enter_global_ctxt<core[6c6f0f72ed298c38]::option::Option<rustc_interface[ffa26b8aee337d6b]::queries::Linker>, rustc_driver_impl[1d3373f79f63c38d]::run_compiler::{closure#0}::{closure#2}>::{closure#2} as core[6c6f0f72ed298c38]::ops::function::FnOnce<(&rustc_session[e077b3088d2cab4d]::session::Session, rustc_middle[11be9ef6dd95cb79]::ty::context::CurrentGcx, alloc[d9717d1773e7bcdb]::sync::Arc<rustc_data_structures[be2354717932db16]::jobserver::Proxy>, &std[e84040df3bd3b365]::sync::once_lock::OnceLock<rustc_middle[11be9ef6dd95cb79]::ty::context::GlobalCtxt>, &rustc_data_structures[be2354717932db16]::sync::worker_local::WorkerLocal<rustc_middle[11be9ef6dd95cb79]::arena::Arena>, &rustc_data_structures[be2354717932db16]::sync::worker_local::WorkerLocal<rustc_hir[e6f1d3e8b67d381c]::Arena>, rustc_driver_impl[1d3373f79f63c38d]::run_compiler::{closure#0}::{closure#2})>>::call_once::{shim:vtable#0}
18: 0x7f44d0447ad0 - rustc_interface[ffa26b8aee337d6b]::interface::run_compiler::<(), rustc_driver_impl[1d3373f79f63c38d]::run_compiler::{closure#0}>::{closure#1}
19: 0x7f44d04307be - std[e84040df3bd3b365]::sys::backtrace::__rust_begin_short_backtrace::<rustc_interface[ffa26b8aee337d6b]::util::run_in_thread_with_globals<rustc_interface[ffa26b8aee337d6b]::util::run_in_thread_pool_with_globals<rustc_interface[ffa26b8aee337d6b]::interface::run_compiler<(), rustc_driver_impl[1d3373f79f63c38d]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>
20: 0x7f44d0430ea0 - <std[e84040df3bd3b365]::thread::lifecycle::spawn_unchecked<rustc_interface[ffa26b8aee337d6b]::util::run_in_thread_with_globals<rustc_interface[ffa26b8aee337d6b]::util::run_in_thread_pool_with_globals<rustc_interface[ffa26b8aee337d6b]::interface::run_compiler<(), rustc_driver_impl[1d3373f79f63c38d]::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}, ()>::{closure#1} as core[6c6f0f72ed298c38]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
21: 0x7f44d0431d2c - <std[e84040df3bd3b365]::sys::thread::unix::Thread>::new::thread_start
22: 0x7f44d1cc598b - <unknown>
23: 0x7f44d1d49a0c - <unknown>
24: 0x0 - <unknown>
error: the compiler unexpectedly panicked. This is a bug
note: we would appreciate a bug report: https://github.com/rust-lang/miri/issues/new
note: please make sure that you have updated to the latest nightly
note: please attach the file at `/home/rib/src/jni-rs/jni-git-dev0/rustc-ice-2026-02-28T17_35_30-847818.txt` to your bug report
note: rustc 1.95.0-nightly (873b4beb0 2026-02-15) running on x86_64-unknown-linux-gnu
note: compiler flags: --crate-type bin -C embed-bitcode=no -C debuginfo=2 -C incremental=[REDACTED] -Z miri-native-lib=/usr/lib/jvm/java-21-openjdk/lib/server/libjvm.so -Z miri-backtrace=full
note: some of the compiler flags provided by cargo are hidden
query stack during panic:
end of query stack