resolve: derive diag for undetermined macro resolution

[bvanjoi]

simply for neatness.

[rustbot]

r? @TaKO8Ki

(rustbot has picked a reviewer for you, use r? to override)

[cjgillot]

one nit and r=me

[compiler-errors]

cjgillot said r=them after the nit, so

@bors r=cjgillot

[bors]

📌 Commit 7bad066 has been approved by cjgillot

It is now in the queue for this repository.

[bors]

⌛ Testing commit 7bad066 with merge 9a099d2...

[bors]

☀️ Test successful - checks-actions
Approved by: cjgillot
Pushing 9a099d2 to master...

[rust-timer]

Finished benchmarking commit (9a099d2): 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)	0.9%	[0.9%, 0.9%]	1
Improvements ✅ (primary)	-	-	0
Improvements ✅ (secondary)	-3.5%	[-3.5%, -3.5%]	1
All ❌✅ (primary)	-	-	0

Cycles

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

Binary size

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

Bootstrap: 631.227s -> 629.513s (-0.27%)
Artifact size: 317.64 MiB -> 317.49 MiB (-0.05%)