Valgrind tests fail on Bookworm

[bruceleerabbit]

$ make test
  cargo build
  warning: attribute should be applied to a free function, impl method or static
    --> src/lib.rs:46:1
     |
  46 |   #[no_mangle]
     |   ^^^^^^^^^^^^
  47 |   #[derive(Clone, Copy, Debug, Eq, PartialEq)]
  48 | / pub enum CBoxIdentityMode {
  49 | |     Complete = 0,
  50 | |     Public   = 1
  51 | | }
     | |_- not a free function, impl method or static
     |
     = note: `#[warn(unused_attributes)]` on by default
     = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

     warning: attribute should be applied to a free function, impl method or static
     --> src/lib.rs:351:1
      |
  351 |   #[no_mangle]
      |   ^^^^^^^^^^^^
  352 |   #[derive(Clone, Copy, Debug)]
  353 | / pub enum CBoxResult {
  354 | |     Success               = 0,
  355 | |     StorageError          = 1,
  356 | |     SessionNotFound       = 2,
  ...   |
  371 | |     DegeneratedKey        = 17
  372 | | }
      | |_- not a free function, impl method or static
      |
      = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!

  warning: `cryptobox-c` (lib) generated 2 warnings
      Finished dev [unoptimized + debuginfo] target(s) in 0.46s
  mkdir -p test/target
  cp target/debug/libcryptobox.so test/target/libcryptobox.so
  rm -f test/target/main
  cc -std=c99 -Wall -Wextra -Werror -g test/main.c -o test/target/main -Isrc -Ltest/target -lcryptobox
  LD_LIBRARY_PATH=test/target valgrind --leak-check=full --error-exitcode=1 --track-origins=yes test/target/main
  ==68253== Memcheck, a memory error detector
  ==68253== Copyright (C) 2002-2022, and GNU GPL'd, by Julian Seward et al.
  ==68253== Using Valgrind-3.19.0 and LibVEX; rerun with -h for copyright info
  ==68253== Command: test/target/main
  ==68253==
  alice="/tmp/cbox_test_aliceNgw9Dt", bob="/tmp/cbox_test_bobubbcd1"
  test_basics ... OK
  ERROR: CBoxError: proteus error: PreKeyNotFound: 1
  test_prekey_removal ... OK
  test_random_bytes ... OK
  ERROR: CBOR decoder error: DecodeError: unexpected type Text (info=14)
  test_is_prekey ... OK
  test_last_prekey ... OK
  ERROR: CBoxError: proteus error: DuplicateMessage
  test_duplicate_msg ... OK
  test_delete_session ... OK
  test_box_reopen ... OK
  ERROR: CBoxError: identity error   
  test_external_identity ... OK
  ERROR: CBoxError: identity error   
  ERROR: CBoxError: identity error   
  test_wrong_identity ... OK
  test_fingerprint_prekey ... OK

  ==68253==
  ==68253== HEAP SUMMARY:
  ==68253==     in use at exit: 0 bytes in 0 blocks
  ==68253==   total heap usage: 1,124 allocs, 1,124 frees, 269,456 bytes allocated
  ==68253==
  ==68253== All heap blocks were freed -- no leaks are possible
  ==68253==
  ==68253== For lists of detected and suppressed errors, rerun with: -s
  ==68253== ERROR SUMMARY: 0 errors from 0 contexts (suppressed: 0 from 0)