Add controlled panic on send error

Signed-off-by: Trivernis <trivernis@protonmail.com>

Cargo.toml

@@ -4,7 +4,7 @@ description = "OpenCL Stream execution framework"
 repository = "https://github.com/parallel-programming-hwr/ocl-stream-rs"
 license = "Apache-2.0"
 readme = "README.md"
-version = "0.3.1"
+version = "0.3.2"
 authors = ["Trivernis <trivernis@protonmail.com>"]
 edition = "2018"
 

src/executor/mod.rs

@@ -96,7 +96,9 @@ impl OCLStreamExecutor {
                     let sender = context.sender().clone();
 
                     if let Err(e) = func(context) {
-                        sender.err(e).unwrap();
+                        if let Err(e) = sender.err(e) {
+                            panic!("Failed to forward error to receiver: {}", e);
+                        }
                     }
                 })
                 .expect("Failed to spawn ocl thread");