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[WaffleLapkin]

I accidentally commited some things with my name/email swapped ^^'

[rustbot]

r? @Mark-Simulacrum

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[WaffleLapkin]

@bors r+ rollup

[bors]

📌 Commit 9503981 has been approved by WaffleLapkin

It is now in the queue for this repository.

[bors]

⌛ Testing commit 9503981 with merge 5031cb3...

[rust-log-analyzer]

The job x86_64-mingw-1 failed! Check out the build log: (web) (plain enhanced) (plain)

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

---- [mir-opt] tests\mir-opt\dataflow-const-prop\transmute.rs stdout ----
------rustc.exe stdout------------------------------

------rustc.exe stderr------------------------------
warning: unreachable definition
##[warning]  --> D:\a\rust\rust\tests\mir-opt\dataflow-const-prop\transmute.rs:60:9
   |
60 |     let x: Never = unsafe { transmute(()) };
   |         ^                   ------------- any code following this expression is unreachable
---

warning: unnecessary transmute
##[warning]  --> D:\a\rust\rust\tests\mir-opt\dataflow-const-prop\transmute.rs:19:14
   |
19 |     unsafe { transmute('R') }
   |              ^^^^^^^^^^^^^^
   |
   = note: `#[warn(unnecessary_transmutes)]` on by default
help: replace this with
   |
19 -     unsafe { transmute('R') }
19 +     unsafe { u32::from('R').cast_signed() }
   |

warning: unnecessary transmute
##[warning]  --> D:\a\rust\rust\tests\mir-opt\dataflow-const-prop\transmute.rs:26:14
   |
26 |     unsafe { transmute(0x52_u32) }
   |              ---------^^^^^^^^^^
   |              |
   |              help: replace this with: `char::from_u32_unchecked`
   |
   = help: consider using `char::from_u32(…).unwrap()`
---
   |
   = help: consider using `char::from_u32(i32::cast_unsigned(…)).unwrap()`
help: replace this with
   |
33 -     unsafe { transmute(i32::MAX) }
33 +     unsafe { char::from_u32_unchecked(i32::cast_unsigned(i32::MAX)) }
   |

warning: the type `Never` does not permit zero-initialization
##[warning]  --> D:\a\rust\rust\tests\mir-opt\dataflow-const-prop\transmute.rs:60:29
   |
---
thread 'main' (6712) has overflowed its stack

------------------------------------------

error: compilation failed!
status: exit code: 0xc00000fd
command: PATH="D:\a\rust\rust\build\x86_64-pc-windows-gnu\stage2\bin;D:\a\rust\rust\build\x86_64-pc-windows-gnu\bootstrap-tools\x86_64-pc-windows-gnu\release\deps;D:\a\rust\rust\ninja;D:\a\rust\rust\mingw64\bin;C:\msys64\usr\bin;D:\a\rust\rust\sccache;C:\Program Files\MongoDB\Server\7.0\bin;C:\vcpkg;C:\tools\zstd;C:\hostedtoolcache\windows\stack\3.7.1\x64;C:\cabal\bin;C:\ghcup\bin;C:\mingw64\bin;C:\Program Files\dotnet;C:\Program Files\MySQL\MySQL Server 8.0\bin;C:\Program Files\R\R-4.5.1\bin\x64;C:\SeleniumWebDrivers\GeckoDriver;C:\SeleniumWebDrivers\EdgeDriver;C:\SeleniumWebDrivers\ChromeDriver;C:\Program Files (x86)\sbt\bin;C:\Program Files (x86)\GitHub CLI;C:\Program Files\Git\bin;C:\Program Files (x86)\pipx_bin;C:\npm\prefix;C:\hostedtoolcache\windows\go\1.24.9\x64\bin;C:\hostedtoolcache\windows\Python\3.9.13\x64\Scripts;C:\hostedtoolcache\windows\Python\3.9.13\x64;C:\hostedtoolcache\windows\Ruby\3.3.9\x64\bin;C:\Program Files\OpenSSL\bin;C:\tools\kotlinc\bin;C:\hostedtoolcache\windows\Java_Temurin-Hotspot_jdk\17.0.16-8\x64\bin;C:\Program Files\ImageMagick-7.1.2-Q16-HDRI;C:\Program Files\Microsoft SDKs\Azure\CLI2\wbin;C:\ProgramData\kind;C:\ProgramData\Chocolatey\bin;C:\Windows\system32;C:\Windows;C:\Windows\System32\Wbem;C:\Windows\System32\WindowsPowerShell\v1.0;C:\Windows\System32\OpenSSH;C:\Program Files\PowerShell\7;C:\Program Files\Microsoft\Web Platform Installer;C:\Program Files\Microsoft SQL Server\Client SDK\ODBC\170\Tools\Binn;C:\Program Files\Microsoft SQL Server\150\Tools\Binn;C:\Program Files\dotnet;C:\Program Files (x86)\Windows Kits\10\Windows Performance Toolkit;C:\Program Files (x86)\WiX Toolset v3.14\bin;C:\Program Files\Microsoft SQL Server\130\DTS\Binn;C:\Program Files\Microsoft SQL Server\140\DTS\Binn;C:\Program Files\Microsoft SQL Server\150\DTS\Binn;C:\Program Files\Microsoft SQL Server\160\DTS\Binn;C:\Program Files\Microsoft SQL Server\170\DTS\Binn;C:\ProgramData\chocolatey\lib\pulumi\tools\Pulumi\bin;C:\Program Files\CMake\bin;C:\Strawberry\c\bin;C:\Strawberry\perl\site\bin;C:\Strawberry\perl\bin;C:\ProgramData\chocolatey\lib\maven\apache-maven-3.9.11\bin;C:\Program Files\Microsoft Service Fabric\bin\Fabric\Fabric.Code;C:\Program Files\Microsoft SDKs\Service Fabric\Tools\ServiceFabricLocalClusterManager;C:\Program Files\nodejs;C:\Program Files\Git\cmd;C:\Program Files\Git\mingw64\bin;C:\Program Files\Git\usr\bin;C:\Program Files\GitHub CLI;C:\tools\php;C:\Program Files (x86)\sbt\bin;C:\Program Files\Amazon\AWSCLIV2;C:\Program Files\Amazon\SessionManagerPlugin\bin;C:\Program Files\Amazon\AWSSAMCLI\bin;C:\Program Files\Microsoft SQL Server\130\Tools\Binn;C:\Program Files\mongosh;C:\Program Files\LLVM\bin;C:\Program Files (x86)\LLVM\bin;C:\Users\runneradmin\.dotnet\tools;C:\Users\runneradmin\.cargo\bin;C:\Users\runneradmin\AppData\Local\Microsoft\WindowsApps" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnu\\stage2\\bin\\rustc.exe" "D:\\a\\rust\\rust\\tests\\mir-opt\\dataflow-const-prop\\transmute.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=C:\\Users\\runneradmin\\.cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=D:\\a\\rust\\rust\\vendor" "--sysroot" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnu\\stage2" "--target=x86_64-pc-windows-gnu" "--check-cfg" "cfg(test,FALSE)" "-O" "-Copt-level=1" "-Zdump-mir=DataflowConstProp | DataflowConstProp | DataflowConstProp | DataflowConstProp | DataflowConstProp | DataflowConstProp | DataflowConstProp | DataflowConstProp | DataflowConstProp | DataflowConstProp" "-Zvalidate-mir" "-Zlint-mir" "-Zdump-mir-exclude-pass-number" "-Zmir-include-spans=false" "--crate-type=rlib" "-Zmir-opt-level=0" "-Zmir-enable-passes=+DataflowConstProp" "-Zdump-mir-dir=D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnu\\test\\mir-opt\\dataflow-const-prop\\transmute" "--emit" "mir" "-C" "prefer-dynamic" "--out-dir" "D:\\a\\rust\\rust\\build\\x86_64-pc-windows-gnu\\test\\mir-opt\\dataflow-const-prop\\transmute" "-A" "internal_features" "-A" "unused_parens" "-A" "unused_braces" "-Crpath" "-Cdebuginfo=0" "-O" "--crate-type=lib"
stdout: none
--- stderr -------------------------------
warning: unreachable definition
##[warning]  --> D:\a\rust\rust\tests\mir-opt\dataflow-const-prop\transmute.rs:60:9
   |
---

warning: unnecessary transmute
##[warning]  --> D:\a\rust\rust\tests\mir-opt\dataflow-const-prop\transmute.rs:19:14
   |
19 |     unsafe { transmute('R') }
   |              ^^^^^^^^^^^^^^
   |
   = note: `#[warn(unnecessary_transmutes)]` on by default
help: replace this with
   |
19 -     unsafe { transmute('R') }
19 +     unsafe { u32::from('R').cast_signed() }
   |

warning: unnecessary transmute
##[warning]  --> D:\a\rust\rust\tests\mir-opt\dataflow-const-prop\transmute.rs:26:14
   |
26 |     unsafe { transmute(0x52_u32) }
   |              ---------^^^^^^^^^^
   |              |
   |              help: replace this with: `char::from_u32_unchecked`
   |
   = help: consider using `char::from_u32(…).unwrap()`
---
   |
   = help: consider using `char::from_u32(i32::cast_unsigned(…)).unwrap()`
help: replace this with
   |
33 -     unsafe { transmute(i32::MAX) }
33 +     unsafe { char::from_u32_unchecked(i32::cast_unsigned(i32::MAX)) }
   |

warning: the type `Never` does not permit zero-initialization
##[warning]  --> D:\a\rust\rust\tests\mir-opt\dataflow-const-prop\transmute.rs:60:29
   |
---

Some tests failed in compiletest suite=mir-opt mode=mir-opt host=x86_64-pc-windows-gnu target=x86_64-pc-windows-gnu
Bootstrap failed while executing `test --stage 2 --skip=compiler --skip=src`
Build completed unsuccessfully in 1:47:26
make: *** [Makefile:123: ci-mingw-x] Error 1
  local time: Mon Oct 27 07:54:00 CUT 2025
  network time: Mon, 27 Oct 2025 07:54:00 GMT
##[error]Process completed with exit code 2.
##[group]Run echo "disk usage:"
echo "disk usage:"

[bors]

💔 Test failed - checks-actions

[WaffleLapkin]

@bors retry

Spurious CI failure, this PR did not touch rustc or mir tests in any way