try adopting taiki-e/cargo-llvm-cov#141 for better reports

[ruifengx]

Coverage dropped drastically (~90% to ~25%) after Nov 30, 2021, but the code was not modified at all. It is only possible due to the change in either rustc or cargo-llvm-cov. Let's first try to downgrade the easy one and see what's going on.

[coveralls]

Pull Request Test Coverage Report for Build 1921934846

• 1 of 1 (100.0%) changed or added relevant line in 1 file are covered.
• 7 unchanged lines in 2 files lost coverage.
• Overall coverage increased (+66.0%) to 91.009%

---

Files with Coverage Reduction	New Missed Lines	%
src/backend/dfa.rs	1	95.54%
src/backend/lalr1.rs	6	82.96%

Totals
Change from base Build 1921279985:	66.0%
Covered Lines:	2065
Relevant Lines:	2269

---

💛 - Coveralls

[ruifengx]

Apparently the result doesn't seem right, either. Let's try the fix taiki-e/cargo-llvm-cov#141.

[ruifengx]

Looks good, gonna merge this.

This would be a temporary fix: come back at this when the upstream PR is merged.

[taiki-e]

FYI, I've just published cargo-llvm-cov 0.3.0 which includes taiki-e/cargo-llvm-cov#141.