refactor(test_runner): use #![feature(generic_arg_infer)]

Author: yvt

src/r3_test_runner/src/main.rs

@@ -1,4 +1,5 @@
 #![feature(exhaustive_patterns)]
+#![feature(generic_arg_infer)]
 #![feature(must_not_suspend)] // `must_not_suspend` lint
 #![feature(decl_macro)] // `macro`
 #![feature(let_else)] // `let ... = ... else { ... }`

src/r3_test_runner/src/targets/probe_rs.rs

@@ -322,7 +322,7 @@ impl ReadRtt {
         Self {
             options,
             st: ReadRttSt::Idle {
-                buf: Box::new([0u8; 1024]),
+                buf: Box::new([0u8; _]),
                 session,
                 rtt: Box::new(rtt),
                 pos: 0,

src/r3_test_runner/src/targets/rp_pico.rs

@@ -514,7 +514,7 @@ impl PicobootCmd {
                 _addr_size: PicobootCmdArgsAddrSize {
                     _addr: addr,
                     _size: size,
-                    _pad: [0; 8],
+                    _pad: [0; _],
                 },
             },
         }
@@ -534,7 +534,7 @@ impl PicobootCmd {
                     _pc: pc,
                     _sp: sp,
                     _delay_ms: delay_ms,
-                    _pad: [0; 4],
+                    _pad: [0; _],
                 },
             },
         }