Bug 16122

Summary: [scarthgap] AB-INT: qemuarm64-tc/qemux86-tc rust.RustSelfTestSystemEmulated.test_rust fails with "panicked at src/tools/compiletest/src/lib.rs:1054:31"
Product: [QA/Testing] Functional (self) Testing Reporter: Yoann Congal <yoann.congal>
Component: oe-selftestAssignee: Yoann Congal <yoann.congal>
Status: IN PROGRESS DESIGN --- QA Contact:
Severity: normal    
Priority: Medium CC: randy.macleod, sundeep.kokkonda
Version: 5.0.19   
Target Milestone: 5.0.22   
Hardware: x86   
OS: Multiple   
Whiteboard: AB-INT
OS type for building Yocto: --- Type of Regression: ---
Verified: Documentation change: Don't know

Description Yoann Congal 2026-01-05 10:51:37 UTC 
On scarthgap, rust.RustSelfTestSystemEmulated.test_rust failed with
  Testing stage1 compiletest suite=ui mode=ui (x86_64-unknown-linux-gnu -> i686-poky-linux-gnu)
  thread 'main' panicked at src/tools/compiletest/src/lib.rs:1054:31:
  called `Option::unwrap()` on a `None` value
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
  Testing stage1 compiletest suite=run-pass-valgrind mode=run-pass-valgrind (x86_64-unknown-linux-gnu -> i686-poky-linux-gnu)
  thread 'main' panicked at src/tools/compiletest/src/lib.rs:1054:31:
  called `Option::unwrap()` on a `None` value
  note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace

In "qemuarm64-tc":
* https://errors.yoctoproject.org/Errors/Details/893218/
* https://autobuilder.yoctoproject.org/valkyrie/#/builders/5/builds/2878
* (Note: passed in https://autobuilder.yoctoproject.org/valkyrie/#/builders/5/builds/2880)


And in "qemux86-tc":
* https://autobuilder.yoctoproject.org/valkyrie/#/builders/28/builds/2884
* https://errors.yoctoproject.org/Errors/Details/893233/
* (Note: passed in https://autobuilder.yoctoproject.org/valkyrie/#/builders/28/builds/2886)
Comment 1 Yoann Congal 2026-01-05 13:16:22 UTC 
Look GDB related: the panic is in the extract_gdb_version() function:
src/tools/compiletest/src/lib.rs:
1034 fn extract_gdb_version(full_version_line: &str) -> Option<u32> {
1035     let full_version_line = full_version_line.trim();
1036 
1037     // GDB versions look like this: "major.minor.patch?.yyyymmdd?", with both
1038     // of the ? sections being optional
1039 
1040     // We will parse up to 3 digits for each component, ignoring the date
1041 
1042     // We skip text in parentheses.  This avoids accidentally parsing
1043     // the openSUSE version, which looks like:
1044     //  GNU gdb (GDB; openSUSE Leap 15.0) 8.1
1045     // This particular form is documented in the GNU coding standards:
1046     // https://www.gnu.org/prep/standards/html_node/_002d_002dversion.html#g_t_002d_002dversion
1047 
1048     let unbracketed_part = full_version_line.split('[').next().unwrap();
1049     let mut splits = unbracketed_part.trim_end().rsplit(' ');
1050     let version_string = splits.next().unwrap();
1051 
1052     let mut splits = version_string.split('.');
1053     let major = splits.next().unwrap();
1054     let minor = splits.next().unwrap();
1055     let patch = splits.next();
Comment 2 Yoann Congal 2026-01-14 16:49:24 UTC 
I started to try to reproduce under better error handling (no success so far)
https://git.yoctoproject.org/poky-contrib/log/?h=ycongal/scarthgap/bz16122_rust

under a modified builder (to only run the failing test)
https://git.yoctoproject.org/yocto-autobuilder-helper/log/?h=contrib/ycongal/scarthgap/bz16122_rust

See: https://autobuilder.yoctoproject.org/valkyrie/#/builders/28 with the "contrib/ycongal/scarthgap/bz16122_rust" builds
Comment 3 Yoann Congal 2026-02-17 23:06:56 UTC 
scarthgap qemuarm-tc fedora40-vk-2 https://autobuilder.yoctoproject.org/valkyrie/?#/builders/42/builds/3129