fix: regression for handling rustflags from .cargo/config.toml

[not-matthias]

If target.<cfg>.rustflags is set, our build.rustflags config value won't be used since it has a lower precedence (see: https://doc.rust-lang.org/nightly/cargo/reference/config.html#buildrustflags). We can solve this by using target.cfg(all()) but this will override any build.rustflags values in the .cargo/config.toml.

[codspeed-hq]

CodSpeed Instrumentation Performance Report

Merging #114 will degrade performances by 15.89%

_{Comparing cod-1187-cargo-codspeed-not-building-properly-with-304-on-swc (88f18b7) with main (2d80483)}

Summary

⚡ 7 improvements
❌ 5 regressions
✅ 155 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
⚡	sleep_100ms	624.4 ns	595.3 ns	+4.9%
⚡	sleep_10ms	595.3 ns	566.1 ns	+5.15%
⚡	sleep_1ms	595.3 ns	566.1 ns	+5.15%
⚡	sleep_50ms	624.4 ns	595.3 ns	+4.9%
❌	bench_array1[10]	195.8 ns	225 ns	-12.96%
❌	bench_array1[4]	154.4 ns	183.6 ns	-15.89%
❌	bench_array2[10]	195.8 ns	225 ns	-12.96%
❌	bench_array2[4]	154.4 ns	183.6 ns	-15.89%
❌	init_array[4]	154.4 ns	183.6 ns	-15.89%
⚡	recursive_memoized[BTreeMap<u64, u64>, 0]	371.7 ns	342.5 ns	+8.52%
⚡	instant	363.6 ns	334.4 ns	+8.72%
⚡	system_time	363.6 ns	334.4 ns	+8.72%

[codspeed-hq]

CodSpeed WallTime Performance Report

Merging #114 will degrade performances by 58.52%

_{Comparing cod-1187-cargo-codspeed-not-building-properly-with-304-on-swc (88f18b7) with main (2d80483)}

Summary

⚡ 14 improvements
❌ 8 regressions
✅ 132 untouched benchmarks

⚠️ Please fix the performance issues or acknowledge them on CodSpeed.

Benchmarks breakdown

	Benchmark	BASE	HEAD	Change
❌	large_drop	166.6 µs	188.1 µs	-11.4%
❌	large_setup	13 ns	15 ns	-13.33%
❌	from_elem[16384]	836 ns	863 ns	-3.13%
⚡	from_elem[4096]	332 ns	321 ns	+3.43%
❌	from_elem[8192]	494 ns	510 ns	-3.14%
⚡	bench_array1[10]	10 ns	9 ns	+11.11%
⚡	bench_array2[10]	10 ns	9 ns	+11.11%
⚡	recursive_memoized[BTreeMap<u64, u64>, 20]	1.9 µs	1.8 µs	+5.96%
⚡	recursive_memoized[BTreeMap<u64, u64>, 30]	3.1 µs	3 µs	+4.05%
⚡	recursive_memoized[BTreeMap<u64, u64>, 5]	214 ns	199 ns	+7.54%
⚡	recursive_memoized[HashMap<u64, u64>, 10]	1.6 µs	1.5 µs	+5.27%
⚡	recursive_memoized[HashMap<u64, u64>, 5]	627 ns	573 ns	+9.42%
⚡	graph_coloring[3]	1.2 µs	1.1 µs	+5.5%
❌	hamiltonian_cycle[5]	636 ns	662 ns	-3.93%
⚡	permutations[5]	14 µs	13.4 µs	+4.76%
⚡	add_two_integers[(255, 255)]	20 ns	6 ns	×3.3
⚡	add_two_integers[(42, 13)]	20 ns	6 ns	×3.3
❌	system_time	38 ns	40 ns	-5%
❌	sleep_100ns	24 µs	57.8 µs	-58.52%
⚡	sleep_100us	126.5 µs	113.1 µs	+11.86%
...	...	...	...	...

ℹ️ Only the first 20 benchmarks are displayed. Go to the app to view all benchmarks.