```
[dirbaio@mars radio-app]$ arm-none-eabi-size target/thumbv7em-none-eabihf/release/hello
   text	   data	    bss	    dec	    hex	filename
   7912	     48	   1036	   8996	   2324	target/thumbv7em-none-eabihf/release/hello
[dirbaio@mars radio-app]$ cargo +1.72 build --bin hello --release
    Finished release [optimized + debuginfo] target(s) in 0.06s
[dirbaio@mars radio-app]$ arm-none-eabi-size target/thumbv7em-none-eabihf/release/hello
   text	   data	    bss	    dec	    hex	filename
   7512	     48	   1036	   8596	   2194	target/thumbv7em-none-eabihf/release/hello
[dirbaio@mars radio-app]$ cargo +1.73 build --bin hello --release
    Finished release [optimized + debuginfo] target(s) in 0.06s
[dirbaio@mars radio-app]$ arm-none-eabi-size target/thumbv7em-none-eabihf/release/hello
   text	   data	    bss	    dec	    hex	filename
   7912	     48	   1036	   8996	   2324	target/thumbv7em-none-eabihf/release/hello