Update redox_syscall

Cargo.lock

@@ -15,9 +15,9 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.2.0"
+version = "0.2.4"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "bac5c4ce99d34f37ce30e45606946fcd6331223f1c98af4d29c5b6c4977d675b"
+checksum = "05ec8ca9416c5ea37062b502703cd7fcb207736bc294f6e0cf367ac6fc234570"
 dependencies = [
  "bitflags",
 ]

Cargo.toml

@@ -7,4 +7,4 @@ edition = "2018"
 # See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
 
 [dependencies]
-redox_syscall = "0.2"
+redox_syscall = "0.2.4"

src/scheme.rs

@@ -348,7 +348,7 @@ impl SchemeMut for Scheme {
         // TODO
         Err(Error::new(ENOSYS))
     }
-    fn funmap(&mut self, _address: usize) -> Result<usize> {
+    fn funmap(&mut self, _address: usize, _len: usize) -> Result<usize> {
         // TODO
         Err(Error::new(ENOSYS))
     }