Remove explicit LeakSanitizer usage from CI

Running with LeakSanitizer enabled is a mess: we are seeing spurious
failures in CI on completely unrelated changes to the
symbolize_process_symbolic_paths test. Attempting to reproduce them
locally is denied with line noise such as:

> LeakSanitizer: CHECK failed: lsan_interceptors.cpp:82 "((!lsan_init_is_running)) != (0)" (0x0, 0x0) (tid=29001)

This seems to be rust-lang/rust#111073.

In any event, AddressSanitizer comes with leak detection support and so
let's just use that instead -- it hasn't caused any problems and we
haven't seen any issues using it locally either.

Signed-off-by: Daniel Müller <[email protected]>

.github/workflows/test.yml

@@ -263,7 +263,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        sanitizer: [address, leak]
+        sanitizer: [address]
     runs-on: ubuntu-latest
     env:
       LLVM_GSYMUTIL: /usr/bin/llvm-gsymutil-14
@@ -277,10 +277,6 @@ jobs:
       run: |
           # to get the symbolizer for debug symbol resolution
           sudo apt-get install -y llvm-14
-          # to fix buggy leak analyzer:
-          # https://github.com/japaric/rust-san#unrealiable-leaksanitizer
-          sed -i '/\[features\]/i [profile.dev]' Cargo.toml
-          sed -i '/profile.dev/a opt-level = 1' Cargo.toml
           cat Cargo.toml
     - name: cargo test -Zsanitizer=${{ matrix.sanitizer }}
       env:
@@ -290,8 +286,7 @@ jobs:
         #CFLAGS: "-fsanitize=${{ matrix.sanitizer }}"
         #CXXFLAGS: "-fsanitize=${{ matrix.sanitizer }}"
         RUSTFLAGS: "-Zsanitizer=${{ matrix.sanitizer }}"
-        ASAN_OPTIONS: "detect_odr_violation=0:detect_leaks=0"
-        LSAN_OPTIONS: ""
+        ASAN_OPTIONS: "detect_odr_violation=0:detect_leaks=1"
       run: cargo test --workspace --lib --tests --target x86_64-unknown-linux-gnu
   test-release:
     name: Test with release build