Running the fuzzers in CI error out

[oSoMoN]

See e.g. this recent run:

     Running `fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal -artifact_prefix=/home/runner/work/diffutils/diffutils/fuzz/artifacts/fuzz_normal/ -max_total_time=60 -detect_leaks=0 /home/runner/work/diffutils/diffutils/fuzz/corpus/fuzz_normal`
INFO: Running with entropic power schedule (0xFF, 100).
INFO: Seed: 3739805489
INFO: Loaded 1 modules   (44194 inline 8-bit counters): 44194 [0x564b92fe4f70, 0x564b92fefc12), 
INFO: Loaded 1 PC tables (44194 PCs): 44194 [0x564b92fefc18,0x564b9309c638), 
INFO:        0 files found in /home/runner/work/diffutils/diffutils/fuzz/corpus/fuzz_normal
INFO: -max_len is not provided; libFuzzer will not generate inputs larger than 4096 bytes
thread '<unnamed>' panicked at fuzz_targets/fuzz_normal.rs:27:10:
called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "No such file or directory" }
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
==2697== ERROR: libFuzzer: deadly signal
    #0 0x564b92bd87c1  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x1ef7c1) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #1 0x564b92ddf52e  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x3f652e) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #2 0x564b92dd5939  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x3ec939) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #3 0x7fb2cac4251f  (/lib/x86_64-linux-gnu/libc.so.6+0x4251f) (BuildId: c289da5071a3399de893d2af81d6a30c62646e1e)
    #4 0x7fb2cac969fb  (/lib/x86_64-linux-gnu/libc.so.6+0x969fb) (BuildId: c289da5071a3399de893d2af81d6a30c62646e1e)
    #5 0x7fb2cac42475  (/lib/x86_64-linux-gnu/libc.so.6+0x42475) (BuildId: c289da5071a3399de893d2af81d6a30c62646e1e)
    #6 0x7fb2cac287f2  (/lib/x86_64-linux-gnu/libc.so.6+0x287f2) (BuildId: c289da5071a3399de893d2af81d6a30c62646e1e)
    #7 0x564b92e8a449  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x4a1449) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #8 0x564b92b332e9  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x14a2e9) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #9 0x564b92dcf5e4  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x3e65e4) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #10 0x564b92e7f2b5  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x4962b5) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #11 0x564b92e7f063  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x496063) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #12 0x564b92e7c9a8  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x4939a8) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #13 0x564b92e7ed96  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x495d96) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #14 0x564b92b35832  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x14c832) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #15 0x564b92b35dc5  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x14cdc5) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #16 0x564b92c227c5  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x2397c5) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #17 0x564b92c2133a  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x23833a) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #18 0x564b92dca50f  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x3e150f) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #19 0x564b92dcf7f7  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x3e67f7) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #20 0x564b92dced1b  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x3e5d1b) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #21 0x564b92dd5e85  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x3ece85) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #22 0x564b92dde052  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x3f5052) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #23 0x564b92dde6b7  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x3f56b7) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #24 0x564b92dfa55f  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x41155f) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #25 0x564b92b364b6  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x14d4b6) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)
    #26 0x7fb2cac29d8f  (/lib/x86_64-linux-gnu/libc.so.6+0x29d8f) (BuildId: c289da5071a3399de893d2af81d6a30c62646e1e)
    #27 0x7fb2cac29e3f  (/lib/x86_64-linux-gnu/libc.so.6+0x29e3f) (BuildId: c289da5071a3399de893d2af81d6a30c62646e1e)
    #28 0x564b92b36614  (/home/runner/work/diffutils/diffutils/fuzz/target/x86_64-unknown-linux-gnu/release/fuzz_normal+0x14d614) (BuildId: 40fbff1e52749f340ec245969cf12ef48ea09d79)

NOTE: libFuzzer has rudimentary signal handlers.
      Combine libFuzzer with AddressSanitizer or similar for better crash reports.
SUMMARY: libFuzzer: deadly signal
MS: 0 ; base unit: 0000000000000000000000000000000000000000


artifact_prefix='/home/runner/work/diffutils/diffutils/fuzz/artifacts/fuzz_normal/'; Test unit written to /home/runner/work/diffutils/diffutils/fuzz/artifacts/fuzz_normal/crash-da39a3ee5e6b4b0d3255bfef95601890afd80709
Base64: 

────────────────────────────────────────────────────────────────────────────────

Failing input:

	fuzz/artifacts/fuzz_normal/crash-da39a3ee5e6b4b0d3255bfef95601890afd80709

Output of `std::fmt::Debug`:

	(
	    [],
	    [],
	)

Reproduce with:

	cargo fuzz run fuzz_normal fuzz/artifacts/fuzz_normal/crash-da39a3ee5e6b4b0d3255bfef95601890afd80709

Minimize test case with:

	cargo fuzz tmin fuzz_normal fuzz/artifacts/fuzz_normal/crash-da39a3ee5e6b4b0d3255bfef95601890afd80709

────────────────────────────────────────────────────────────────────────────────

Error: Fuzz target exited with exit status: 77
Error: Process completed with exit code 1.