test-cargo-miri: test anyhow

Author: RalfJung

test-cargo-miri/Cargo.lock

@@ -22,6 +22,9 @@ issue_rust_86261 = { path = "issue-rust-86261" }
 byteorder_2 = { package = "byteorder", version = "0.5" } # to test dev-dependencies behave as expected, with renaming
 # Not actually used, but exercises some unique code path (`--extern` .so file).
 serde_derive = "1.0.185"
+# Not actually used, but uses a custom build probe so let's make sure that works.
+# (Ideally we'd check if the probe was successful, but that's not easily possible.)
+anyhow = "1.0"
 
 [build-dependencies]
 autocfg = "1"