Ban projecting into SIMD types [MCP838] #143833

scottmcm · 2025-07-12T11:24:55Z

Closes rust-lang/compiler-team#838

The actual compiler change here is tiny; there's just a bazillion tests to update.

~~Since I'm sure I've missed some, for now~~
~~r ghost~~

try-job: test-various

scottmcm · 2025-07-13T19:47:29Z

Since you previously commented on 138036, how about
r? @compiler-errors

rustbot · 2025-07-13T19:47:34Z

The Miri subtree was changed

cc @rust-lang/miri

Some changes occurred to MIR optimizations

cc @rust-lang/wg-mir-opt

Some changes occurred in compiler/rustc_codegen_cranelift

cc @bjorn3

Some changes occurred in compiler/rustc_codegen_ssa

cc @WaffleLapkin

compiler-errors · 2025-07-16T19:29:06Z

@bors r+ rollup

bors · 2025-07-16T19:29:09Z

📌 Commit fa7734a has been approved by compiler-errors

It is now in the queue for this repository.

…-errors Ban projecting into SIMD types [MCP838] Closes rust-lang/compiler-team#838 The actual compiler change here is tiny; there's just a bazillion tests to update. Since I'm sure I've missed some, for now r? ghost

Rollup of 12 pull requests Successful merges: - #142300 (Disable `tests/run-make/mte-ffi` because no CI runners have MTE extensions enabled) - #143271 (Store the type of each GVN value) - #143280 (Remove duplicate error about raw underscore lifetime) - #143649 (Add test for `default_field_values` and `const_default`) - #143699 (Make `AsyncDrop` check that it's being implemented on a local ADT) - #143719 (Emit warning when there is no space between `-o` and arg) - #143833 (Ban projecting into SIMD types [MCP838]) - #143891 (Port `#[coverage]` to the new attribute system) - #143908 (`tests/ui`: A New Order [0/28] ) - #143909 (docs(alloc::fmt): Make type optional, instead of matching empty string) - #143925 (Make slice comparisons const) - #143997 (Use $crate in macros for rustc_public (aka stable_mir)) r? `@ghost` `@rustbot` modify labels: rollup

matthiaskrgr · 2025-07-18T02:26:54Z

@bors r-
#144101 (comment)

scottmcm · 2025-07-19T00:32:39Z

Triggering the job from the rollup,
@bors try

Ban projecting into SIMD types [MCP838] Closes rust-lang/compiler-team#838 The actual compiler change here is tiny; there's just a bazillion tests to update. ~~Since I'm sure I've missed some, for now~~ ~~r ghost~~ try-job: test-various

bors · 2025-07-19T00:33:50Z

⌛ Trying commit 7810ff7 with merge 3610c20...

bors · 2025-07-19T01:35:19Z

💔 Test failed - checks-actions

scottmcm · 2025-07-19T02:07:51Z

Triggering the job from the rollup,
@bors try

Ban projecting into SIMD types [MCP838] Closes rust-lang/compiler-team#838 The actual compiler change here is tiny; there's just a bazillion tests to update. ~~Since I'm sure I've missed some, for now~~ ~~r ghost~~ try-job: test-various

bors · 2025-07-19T02:09:02Z

⌛ Trying commit 9e8d651 with merge 875757a...

bors · 2025-07-19T03:39:17Z

☀️ Try build successful - checks-actions
Build commit: 875757a (875757a9a449fefbfc6d982f9165cb32973d7f27)

rust-log-analyzer · 2025-07-19T06:33:02Z

The job x86_64-gnu-miri failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

tests/panic/function_calls/exported_symbol_good_unwind.rs ... ok
tests/panic/panic1.rs ... ok

FAILED TEST: tests/panic/mir-validation.rs
command: MIRI_ENV_VAR_TEST="0" MIRI_TEMP="/tmp/miri-uitest-WnoHwM" RUSTC_ICE="0" RUST_BACKTRACE="1" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/miri" "--error-format=json" "--sysroot=/checkout/obj/build/x86_64-unknown-linux-gnu/miri-sysroot" "-Dwarnings" "-Dunused" "-Ainternal_features" "-Zui-testing" "--out-dir" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/tests/panic" "tests/panic/mir-validation.rs" "--extern" "cfg_if=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libcfg_if-969def50a2043119.rlib" "--extern" "cfg_if=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libcfg_if-969def50a2043119.rmeta" "--extern" "getrandom_01=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libgetrandom-af936d02776bcd6c.rlib" "--extern" "getrandom_01=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libgetrandom-af936d02776bcd6c.rmeta" "--extern" "getrandom_02=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libgetrandom-217eeb0631cc1fa8.rlib" "--extern" "getrandom_02=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libgetrandom-217eeb0631cc1fa8.rmeta" "--extern" "getrandom_03=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libgetrandom-cb8a2be5f011fc42.rlib" "--extern" "getrandom_03=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libgetrandom-cb8a2be5f011fc42.rmeta" "--extern" "libc=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/liblibc-f972ecc234a55910.rlib" "--extern" "libc=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/liblibc-f972ecc234a55910.rmeta" "--extern" "num_cpus=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libnum_cpus-6bb586330ecb7ad2.rlib" "--extern" "num_cpus=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libnum_cpus-6bb586330ecb7ad2.rmeta" "--extern" "page_size=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libpage_size-161f654410fc63a3.rlib" "--extern" "page_size=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libpage_size-161f654410fc63a3.rmeta" "--extern" "tempfile=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libtempfile-2d3319a851cd4b32.rlib" "--extern" "tempfile=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libtempfile-2d3319a851cd4b32.rmeta" "--extern" "tokio=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libtokio-aac757b6fb17ce3f.rlib" "--extern" "tokio=/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps/libtokio-aac757b6fb17ce3f.rmeta" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/debug/deps" "-L" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/tmp/miri_ui/0/miri/x86_64-unknown-linux-gnu/debug/deps" "--edition" "2021"

error: actual output differed from expected
Execute `./miri test --bless` to update `tests/panic/mir-validation.stderr` to the actual output
--- tests/panic/mir-validation.stderr
+++ <stderr output>
 error: internal compiler error: compiler/rustc_mir_transform/src/validate.rs:LL:CC: broken MIR in Item(DefId) (after phase change to runtime-optimized) at bb0[1]:
                                 place (*(_2.0: *mut i32)) has deref as a later projection (it is only permitted as the first projection)
... 13 lines skipped ...
 stack backtrace:
 
-error: the compiler unexpectedly panicked. this is a bug.
 
---
 
+error: aborting due to 1 previous error
+

Full unnormalized output:
##[error]error: internal compiler error: compiler/rustc_mir_transform/src/validate.rs:80:25: broken MIR in Item(DefId(0:4 ~ mir_validation[ef71]::main)) (after phase change to runtime-optimized) at bb0[1]:
                                place (*(_2.0: *mut i32)) has deref as a later projection (it is only permitted as the first projection)
  --> tests/panic/mir-validation.rs:15:1
   |
LL | / pub fn main() {
LL | |     mir! {
LL | |         let x: i32;
LL | |         let tuple: (*mut i32,);
...  |
LL | | }
   | |_^


thread 'rustc' panicked at compiler/rustc_mir_transform/src/validate.rs:80:25:
Box<dyn Any>
stack backtrace:
   0: std::panicking::begin_panic::<rustc_errors::ExplicitBug>
   1: <rustc_errors::diagnostic::BugAbort as rustc_errors::diagnostic::EmissionGuarantee>::emit_producing_guarantee
   2: <rustc_errors::DiagCtxtHandle>::span_bug::<rustc_span::span_encoding::Span, alloc::string::String>
   3: rustc_middle::util::bug::opt_span_bug_fmt::<rustc_span::span_encoding::Span>::{closure#0}
   4: rustc_middle::ty::context::tls::with_opt::<rustc_middle::util::bug::opt_span_bug_fmt<rustc_span::span_encoding::Span>::{closure#0}, !>::{closure#0}
   5: rustc_middle::ty::context::tls::with_context_opt::<rustc_middle::ty::context::tls::with_opt<rustc_middle::util::bug::opt_span_bug_fmt<rustc_span::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
   6: rustc_middle::util::bug::span_bug_fmt::<rustc_span::span_encoding::Span>
   7: <rustc_mir_transform::validate::CfgChecker>::fail::<alloc::string::String>
   8: <rustc_mir_transform::validate::Validator as rustc_mir_transform::pass_manager::MirPass>::run_pass
   9: rustc_mir_transform::pass_manager::run_passes_inner
  10: rustc_mir_transform::run_optimization_passes
  11: rustc_mir_transform::optimized_mir
      [... omitted 2 frames ...]
  12: <rustc_middle::ty::context::TyCtxt>::instance_mir
  13: <rustc_const_eval::interpret::eval_context::InterpCx<miri::machine::MiriMachine>>::load_mir
  14: <rustc_const_eval::interpret::eval_context::InterpCx<miri::machine::MiriMachine>>::init_fn_call
  15: <rustc_const_eval::interpret::eval_context::InterpCx<miri::machine::MiriMachine> as miri::concurrency::thread::EvalContextExt>::run_threads
  16: miri::eval::eval_entry
  17: <miri::MiriCompilerCalls as rustc_driver_impl::Callbacks>::after_analysis
  18: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>
  19: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}>
  20: <rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2} as core::ops::function::FnOnce<(&rustc_session::session::Session, rustc_middle::ty::context::CurrentGcx, alloc::sync::Arc<rustc_data_structures::jobserver::Proxy>, &std::sync::once_lock::OnceLock<rustc_middle::ty::context::GlobalCtxt>, &rustc_data_structures::sync::worker_local::WorkerLocal<rustc_middle::arena::Arena>, &rustc_data_structures::sync::worker_local::WorkerLocal<rustc_hir::Arena>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2})>>::call_once::{shim:vtable#0}
  21: <alloc::boxed::Box<dyn for<'a> core::ops::function::FnOnce<(&'a rustc_session::session::Session, rustc_middle::ty::context::CurrentGcx, alloc::sync::Arc<rustc_data_structures::jobserver::Proxy>, &'a std::sync::once_lock::OnceLock<rustc_middle::ty::context::GlobalCtxt<'a>>, &'a rustc_data_structures::sync::worker_local::WorkerLocal<rustc_middle::arena::Arena<'a>>, &'a rustc_data_structures::sync::worker_local::WorkerLocal<rustc_hir::Arena<'a>>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}), Output = core::option::Option<rustc_interface::queries::Linker>>> as core::ops::function::FnOnce<(&rustc_session::session::Session, rustc_middle::ty::context::CurrentGcx, alloc::sync::Arc<rustc_data_structures::jobserver::Proxy>, &std::sync::once_lock::OnceLock<rustc_middle::ty::context::GlobalCtxt>, &rustc_data_structures::sync::worker_local::WorkerLocal<rustc_middle::arena::Arena>, &rustc_data_structures::sync::worker_local::WorkerLocal<rustc_hir::Arena>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2})>>::call_once
  22: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>
  23: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}, ()>
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

note: using internal features is not supported and expected to cause internal compiler errors when used incorrectly
---
   = note: inside `std::panicking::catch_unwind::do_call::<&dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe, i32>` at /checkout/library/std/src/panicking.rs:589:40: 589:43
   = note: inside `std::panicking::catch_unwind::<i32, &dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe>` at /checkout/library/std/src/panicking.rs:552:19: 552:88
   = note: inside `std::panic::catch_unwind::<&dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe, i32>` at /checkout/library/std/src/panic.rs:359:14: 359:40
   = note: inside closure at /checkout/library/std/src/rt.rs:175:24: 175:49
   = note: inside `std::panicking::catch_unwind::do_call::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>` at /checkout/library/std/src/panicking.rs:589:40: 589:43
   = note: inside `std::panicking::catch_unwind::<isize, {closure@std::rt::lang_start_internal::{closure#0}}>` at /checkout/library/std/src/panicking.rs:552:19: 552:88
   = note: inside `std::panic::catch_unwind::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>` at /checkout/library/std/src/panic.rs:359:14: 359:40
   = note: inside `std::rt::lang_start_internal` at /checkout/library/std/src/rt.rs:171:5: 193:7
   = note: inside `std::rt::lang_start::<()>` at /checkout/library/std/src/rt.rs:205:5: 210:6

error: aborting due to 1 previous error



full stderr:
##[error]error: internal compiler error: compiler/rustc_mir_transform/src/validate.rs:80:25: broken MIR in Item(DefId(0:4 ~ mir_validation[ef71]::main)) (after phase change to runtime-optimized) at bb0[1]:
                                place (*(_2.0: *mut i32)) has deref as a later projection (it is only permitted as the first projection)
  --> tests/panic/mir-validation.rs:15:1
   |
LL | / pub fn main() {
LL | |     mir! {
LL | |         let x: i32;
LL | |         let tuple: (*mut i32,);
...  |
LL | | }
   | |_^


thread 'rustc' panicked at compiler/rustc_mir_transform/src/validate.rs:80:25:
Box<dyn Any>
stack backtrace:
   0: std::panicking::begin_panic::<rustc_errors::ExplicitBug>
   1: <rustc_errors::diagnostic::BugAbort as rustc_errors::diagnostic::EmissionGuarantee>::emit_producing_guarantee
   2: <rustc_errors::DiagCtxtHandle>::span_bug::<rustc_span::span_encoding::Span, alloc::string::String>
   3: rustc_middle::util::bug::opt_span_bug_fmt::<rustc_span::span_encoding::Span>::{closure#0}
   4: rustc_middle::ty::context::tls::with_opt::<rustc_middle::util::bug::opt_span_bug_fmt<rustc_span::span_encoding::Span>::{closure#0}, !>::{closure#0}
   5: rustc_middle::ty::context::tls::with_context_opt::<rustc_middle::ty::context::tls::with_opt<rustc_middle::util::bug::opt_span_bug_fmt<rustc_span::span_encoding::Span>::{closure#0}, !>::{closure#0}, !>
   6: rustc_middle::util::bug::span_bug_fmt::<rustc_span::span_encoding::Span>
   7: <rustc_mir_transform::validate::CfgChecker>::fail::<alloc::string::String>
   8: <rustc_mir_transform::validate::Validator as rustc_mir_transform::pass_manager::MirPass>::run_pass
   9: rustc_mir_transform::pass_manager::run_passes_inner
  10: rustc_mir_transform::run_optimization_passes
  11: rustc_mir_transform::optimized_mir
      [... omitted 2 frames ...]
  12: <rustc_middle::ty::context::TyCtxt>::instance_mir
  13: <rustc_const_eval::interpret::eval_context::InterpCx<miri::machine::MiriMachine>>::load_mir
  14: <rustc_const_eval::interpret::eval_context::InterpCx<miri::machine::MiriMachine>>::init_fn_call
  15: <rustc_const_eval::interpret::eval_context::InterpCx<miri::machine::MiriMachine> as miri::concurrency::thread::EvalContextExt>::run_threads
  16: miri::eval::eval_entry
  17: <miri::MiriCompilerCalls as rustc_driver_impl::Callbacks>::after_analysis
  18: <std::thread::local::LocalKey<core::cell::Cell<*const ()>>>::with::<rustc_middle::ty::context::tls::enter_context<<rustc_middle::ty::context::GlobalCtxt>::enter<rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>::{closure#1}, core::option::Option<rustc_interface::queries::Linker>>::{closure#0}, core::option::Option<rustc_interface::queries::Linker>>
  19: <rustc_middle::ty::context::TyCtxt>::create_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2}::{closure#0}>
  20: <rustc_interface::passes::create_and_enter_global_ctxt<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>::{closure#2} as core::ops::function::FnOnce<(&rustc_session::session::Session, rustc_middle::ty::context::CurrentGcx, alloc::sync::Arc<rustc_data_structures::jobserver::Proxy>, &std::sync::once_lock::OnceLock<rustc_middle::ty::context::GlobalCtxt>, &rustc_data_structures::sync::worker_local::WorkerLocal<rustc_middle::arena::Arena>, &rustc_data_structures::sync::worker_local::WorkerLocal<rustc_hir::Arena>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2})>>::call_once::{shim:vtable#0}
  21: <alloc::boxed::Box<dyn for<'a> core::ops::function::FnOnce<(&'a rustc_session::session::Session, rustc_middle::ty::context::CurrentGcx, alloc::sync::Arc<rustc_data_structures::jobserver::Proxy>, &'a std::sync::once_lock::OnceLock<rustc_middle::ty::context::GlobalCtxt<'a>>, &'a rustc_data_structures::sync::worker_local::WorkerLocal<rustc_middle::arena::Arena<'a>>, &'a rustc_data_structures::sync::worker_local::WorkerLocal<rustc_hir::Arena<'a>>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}), Output = core::option::Option<rustc_interface::queries::Linker>>> as core::ops::function::FnOnce<(&rustc_session::session::Session, rustc_middle::ty::context::CurrentGcx, alloc::sync::Arc<rustc_data_structures::jobserver::Proxy>, &std::sync::once_lock::OnceLock<rustc_middle::ty::context::GlobalCtxt>, &rustc_data_structures::sync::worker_local::WorkerLocal<rustc_middle::arena::Arena>, &rustc_data_structures::sync::worker_local::WorkerLocal<rustc_hir::Arena>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2})>>::call_once
  22: rustc_interface::passes::create_and_enter_global_ctxt::<core::option::Option<rustc_interface::queries::Linker>, rustc_driver_impl::run_compiler::{closure#0}::{closure#2}>
  23: <scoped_tls::ScopedKey<rustc_span::SessionGlobals>>::set::<rustc_interface::util::run_in_thread_with_globals<rustc_interface::util::run_in_thread_pool_with_globals<rustc_interface::interface::run_compiler<(), rustc_driver_impl::run_compiler::{closure#0}>::{closure#1}, ()>::{closure#0}, ()>::{closure#0}::{closure#0}::{closure#0}, ()>
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.

note: using internal features is not supported and expected to cause internal compiler errors when used incorrectly
---
   = note: inside `std::panicking::catch_unwind::do_call::<&dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe, i32>` at /checkout/library/std/src/panicking.rs:589:40: 589:43
   = note: inside `std::panicking::catch_unwind::<i32, &dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe>` at /checkout/library/std/src/panicking.rs:552:19: 552:88
   = note: inside `std::panic::catch_unwind::<&dyn std::ops::Fn() -> i32 + std::marker::Sync + std::panic::RefUnwindSafe, i32>` at /checkout/library/std/src/panic.rs:359:14: 359:40
   = note: inside closure at /checkout/library/std/src/rt.rs:175:24: 175:49
   = note: inside `std::panicking::catch_unwind::do_call::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>` at /checkout/library/std/src/panicking.rs:589:40: 589:43
   = note: inside `std::panicking::catch_unwind::<isize, {closure@std::rt::lang_start_internal::{closure#0}}>` at /checkout/library/std/src/panicking.rs:552:19: 552:88
   = note: inside `std::panic::catch_unwind::<{closure@std::rt::lang_start_internal::{closure#0}}, isize>` at /checkout/library/std/src/panic.rs:359:14: 359:40
   = note: inside `std::rt::lang_start_internal` at /checkout/library/std/src/rt.rs:171:5: 193:7
   = note: inside `std::rt::lang_start::<()>` at /checkout/library/std/src/rt.rs:205:5: 210:6

error: aborting due to 1 previous error

---

Location:
   /cargo/registry/src/index.crates.io-1949cf8c6b5b557f/ui_test-0.29.2/src/lib.rs:369

Backtrace omitted. Run with RUST_BACKTRACE=1 environment variable to display it.
Run with RUST_BACKTRACE=full to include source snippets.
error: test failed, to rerun pass `--test ui`

Caused by:
  process didn't exit successfully: `/checkout/obj/build/x86_64-unknown-linux-gnu/stage1-tools/x86_64-unknown-linux-gnu/release/deps/ui-0bacf351ef83efc6` (exit status: 1)
Command has failed. Rerun with -v to see more details.
Build completed unsuccessfully in 0:39:12
  local time: Sat Jul 19 06:32:53 UTC 2025
  network time: Sat, 19 Jul 2025 06:32:53 GMT
##[error]Process completed with exit code 1.
Post job cleanup.

rustbot added S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. T-compiler Relevant to the compiler team, which will review and decide on the PR/issue. labels Jul 12, 2025

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scottmcm mentioned this pull request Jul 12, 2025

Stop projecting into SIMD types in ui/simd/ tests #138036

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rustbot assigned compiler-errors Jul 13, 2025

scottmcm marked this pull request as ready for review July 13, 2025 19:47

rustbot added S-waiting-on-review Status: Awaiting review from the assignee but also interested parties. and removed S-waiting-on-author Status: This is awaiting some action (such as code changes or more information) from the author. labels Jul 13, 2025

workingjubilee mentioned this pull request Jul 14, 2025

repr(scalable) #143924

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fmease mentioned this pull request Jul 17, 2025

Rollup of 16 pull requests #144067

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fmease mentioned this pull request Jul 17, 2025

Rollup of 15 pull requests #144071

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Rollup of 12 pull requests #144101

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scottmcm added 6 commits July 18, 2025 22:45

Give a message with a span on validation error

73b86f0

So many test updates x_x

18657be

...and wasm tests too

027c1c8

Update cranelift tests

beba6d7

Update Miri Tests

4cde2d6

Ban projecting into SIMD types [MCP838]

237e54f

scottmcm force-pushed the final-mcp-838 branch from a877e55 to 237e54f Compare July 19, 2025 05:46

Ban projecting into SIMD types [MCP838] #143833

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Ban projecting into SIMD types [MCP838] #143833

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scottmcm commented Jul 12, 2025 •

edited

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