Update backtrace submodule

[roblabla]

This PR updates the backtrace submodule, avoiding panics when resolving backtraces on Windows 7:

• Fix panic in backtrace symbolication on win7 backtrace-rs#578

Fixes #117941

I ran the std unit tests locally on a Windows7 machine, and can confirm that this indeed fixes #117941.

[rustbot]

r? @Mark-Simulacrum

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[rustbot]

⚠️ Warning ⚠️

• These commits modify submodules.

[ChrisDenton]

I've nominated this for a beta backport as otherwise we'd be breaking Windows 7 on the next stable release. We should avoid doing that until 1.76 at the earliest.

[ChrisDenton]

@bors r=ChrisDenton

[bors]

📌 Commit 08803eb has been approved by ChrisDenton

It is now in the queue for this repository.

[bors]

⌛ Testing commit 08803eb with merge 2f8d81f...

[wesleywiser]

Thank you so much @roblabla for fixing this and testing on Win 7!

Just to ensure this stays near the top of the bors queue if a retry is needed:

@bors p=1

Fixes stable-to-beta regression

[bors]

☀️ Test successful - checks-actions
Approved by: ChrisDenton
Pushing 2f8d81f to master...

[rust-timer]

Finished benchmarking commit (2f8d81f): comparison URL.

Overall result: no relevant changes - no action needed

@rustbot label: -perf-regression

Instruction count

This benchmark run did not return any relevant results for this metric.

Max RSS (memory usage)

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	0.6%	[0.6%, 0.6%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Cycles

Results

This is a less reliable metric that may be of interest but was not used to determine the overall result at the top of this comment.

	mean	range	count
Regressions ❌ (primary)	-	-	0
Regressions ❌ (secondary)	2.5%	[2.2%, 3.2%]	4
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-	-	0
All ❌✅ (primary)	-	-	0

Binary size

This benchmark run did not return any relevant results for this metric.

Bootstrap: 676.058s -> 679.348s (0.49%)
Artifact size: 313.78 MiB -> 313.77 MiB (-0.00%)

[roblabla]

Heyo, is there a way to track the backporting process? It kinda looks like it fell through the cracks (all previously beta-nominated PRs have been accepted/rejected), and I'd be interested in seeing if there's any question I can help with.

(Also, I think this is missing a team label? I assume t-libs).

[Amanieu]

Beta-accepted as per libs team meeting.