Enabled CBMC unknown language mode test now that rust-lang#533 has been fixed (rust-lang#650)

* Enabled CBMC unknown language mode test now that rust-lang#533 has been fixed and migrated it to a cargo-rmc test

Author: zhassan-aws

scripts/rmc-regression.sh

@@ -55,10 +55,6 @@ time "$RMC_DIR"/src/test/rmc-dependency-test/diamond-dependency/run-dependency-t
 # Check that we don't have type mismatches across different crates
 time "$RMC_DIR"/src/test/rmc-multicrate/type-mismatch/run-mismatch-test.sh
 
-# Check that CBMC issue #6341 is fixed
-# Disabled till https://github.com/model-checking/rmc/issues/533 is fixed
-#time "$RMC_DIR"/src/test/rmc-multicrate/cbmc-unknown-lang-mode/run-cbmc-unknown-lang-mode.sh
-
 echo
 echo "All RMC regression tests completed successfully."
 echo

src/test/rmc-multicrate/cbmc-unknown-lang-mode/unknown-lang-mode/Cargo.toml renamed to src/test/cargo-rmc/cbmc-unknown-lang-mode/Cargo.toml

@@ -2,7 +2,7 @@
 # SPDX-License-Identifier: Apache-2.0 OR MIT
 
 [package]
-name = "unknown-lang-mode"
+name = "cbmc-unknown-lang-mode"
 version = "0.1.0"
 edition = "2018"
 

src/test/rmc-multicrate/cbmc-unknown-lang-mode/unknown-lang-mode/src/lib.rs renamed to src/test/cargo-rmc/cbmc-unknown-lang-mode/src/lib.rs

@@ -0,0 +1 @@
+VERIFICATION SUCCESSFUL

src/test/cargo-rmc/cbmc-unknown-lang-mode/test.expected

@@ -21,7 +21,6 @@ export CARGO_TARGET_DIR=/tmp/type_mismatch_test_build
 export RUST_BACKTRACE=1
 cargo rmc &> $RESULT
 
-# Run the solver
 if ! grep -q "VERIFICATION SUCCESSFUL" $RESULT; then
   cat $RESULT
   echo