i686 cross test and don't continue-on-error in cross tests #1154

Job	Run time
test_features	39s
test_features (default)	1m 16s
test_features (gif)	45s
build_benchmarks	43s
Fuzz targets (afl)	1m 25s
test_features (jpeg)	25s
Fuzz targets (cargo-fuzz)	4m 15s
test_features (png)	39s
cargo-deny	20s
clippy	2m 6s
test_features (tiff)	27s
test_features (ico)	1m 5s
public_private_dependencies	21s
rustfmt	6s
test_features (pnm)	1m 7s
test_avif	1m 25s
test_features (tga)	24s
test_avif_decoding	1m 37s
test_features (webp)	59s
test_other_archs (powerpc-unknown-linux-gnu, default)	1m 18s
test_toolchains (1.61.0)	38s
test_features (bmp)	22s
test_other_archs (powerpc-unknown-linux-gnu, webp-encoder)	1m 22s
test_toolchains (nightly)	1m 33s
verify_msrv	2m 16s
test_features (hdr)	33s
test_other_archs (i686-unknown-linux-gnu, default)	1m 16s
test_toolchains (beta)	1m 33s
test_features (dxt)	24s
test_other_archs (i686-unknown-linux-gnu, webp-encoder)	1m 7s
test_features (dds)	28s
test_features (farbfeld)	54s
test_features (openexr)	45s
test_features (jpeg_rayon)	1m 2s
test_features (webp-encoder)	43s
	36m 18s

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