test(bindings): run unit tests under asan

[jmayclin]

Description of changes:

We want to ensure that none of our unit tests are leaking memory.

We currently use "checkers" for some of our tests, but this requires us to manually annotate each test with the checkers::test macro.

Instead of doing that, we can just use Rust's existing address sanitizer support to check for memory leaks in all of the tests.

Testing:

All existing tests should pass.

Additionally, I pushed a commit containing a memory leak here. You can see the failed asan job for that commit here

 =================================================================
==8298==ERROR: LeakSanitizer: detected memory leaks

Direct leak of 24 byte(s) in 1 object(s) allocated from:
    #0 0x55c17b9a2eaf in malloc /rustc/llvm/src/llvm-project/compiler-rt/lib/asan/asan_malloc_linux.cpp:68:3
    #1 0x55c17ba2ce2b in std::sys::alloc::unix::_$LT$impl$u20$core..alloc..global..GlobalAlloc$u20$for$u20$std..alloc..System$GT$::alloc::h3cfff84b03a4b754 /home/runner/.rustup/toolchains/nightly-2024-12-01-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/sys/alloc/unix.rs:14:22
    #2 0x55c17ba22589 in _$LT$checkers..allocator..Allocator$LT$T$GT$$u20$as$u20$core..alloc..global..GlobalAlloc$GT$::alloc::h457eba1cc841aa88 /home/runner/.cargo/registry/src/index.crates.io-6f17d22bba15001f/checkers-0.6.3/src/allocator.rs:54:19
    #3 0x55c17ba67a91 in __rust_alloc /home/runner/work/s2n-tls/s2n-tls/bindings/rust/s2n-tls/src/lib.rs:11:19
    #4 0x55c17ba78fd4 in alloc::alloc::Global::alloc_impl::h3f5294fc6a51959a /home/runner/.rustup/toolchains/nightly-2024-12-01-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/alloc/src/alloc.rs:195:73
    #5 0x55c17ba79388 in _$LT$alloc..alloc..Global$u20$as$u20$core..alloc..Allocator$GT$::allocate::h5d31da0bd5bc3bca /home/runner/.rustup/toolchains/nightly-2024-12-01-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/alloc/src/alloc.rs:257:9
    #6 0x55c17ba689b6 in s2n_tls::testing::s2n_tls::tests::handshake_default_tls13::_$u7b$$u7b$closure$u7d$$u7d$::h335262bad34403ec /home/runner/work/s2n-tls/s2n-tls/bindings/rust/s2n-tls/src/testing/s2n_tls.rs:25:33
    #7 0x55c17bb4d6aa in test::types::RunnableTest::run::h5819b201521a79fb /home/runner/.rustup/toolchains/nightly-2024-12-01-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/test/src/types.rs:145:40
    <SNIP>

By submitting this pull request, I confirm that my contribution is made under the terms of the Apache 2.0 license.

[camshaft]

This is a great idea. We should do the same in s2n-quic 🙂