Disable jemalloc for RISC-V musl targets

The latest available version of jemallocator doesn't support RISC-V, though support was added and should be available in a future release.

Author: bwbuhse

Cargo.toml

@@ -59,7 +59,7 @@ serde_json = "1.0.23"
 termcolor = "1.1.0"
 textwrap = { version = "0.16.0", default-features = false }
 
-[target.'cfg(all(target_env = "musl", target_pointer_width = "64"))'.dependencies.jemallocator]
+[target.'cfg(all(not(target_arch = "riscv64"), target_env = "musl", target_pointer_width = "64"))'.dependencies.jemallocator]
 version = "0.5.0"
 
 [dev-dependencies]

crates/core/main.rs

@@ -35,7 +35,11 @@ mod search;
 //
 // Moreover, we only do this on 64-bit systems since jemalloc doesn't support
 // i686.
-#[cfg(all(target_env = "musl", target_pointer_width = "64"))]
+#[cfg(all(
+    not(target_arch = "riscv64"),
+    target_env = "musl",
+    target_pointer_width = "64"
+))]
 #[global_allocator]
 static ALLOC: jemallocator::Jemalloc = jemallocator::Jemalloc;