Update README.md

Author: wyfcyx

README.md

@@ -65,15 +65,12 @@ Overall progress: ch7
 
 ### Binaries
 
-* rustc 1.56.0-nightly (08095fc1f 2021-07-26)
+* rustc 1.56.0-nightly (b03ccace5 2021-08-24)
 
 * qemu: 5.0.0
 
-* rustsbi-lib: 0.2.0-alpha.4
+* rustsbi: qemu[7d71bfb7] k210[563144b0]
 
-  rustsbi-qemu: d4968dd2
-
-  rustsbi-k210: b689314e
 ### Crates
 
 We will add them later.