Forward features from library/test

Cargo.lock

@@ -4832,6 +4832,7 @@ dependencies = [
  "getopts",
  "panic_abort",
  "panic_unwind",
+ "proc_macro",
  "std",
 ]
 

library/test/Cargo.toml

@@ -12,3 +12,25 @@ std = { path = "../std" }
 core = { path = "../core" }
 panic_unwind = { path = "../panic_unwind" }
 panic_abort = { path = "../panic_abort" }
+
+# not actually used but needed to always have proc_macro in the sysroot
+# FIXME(jubilee): replaced by library/sysroot, this is a temporary shim
+proc_macro = { path = "../proc_macro" }
+
+# Forward features to the `std` crate as necessary
+# FIXME(jubilee): replaced by library/sysroot, this is a temporary shim
+[features]
+default = ["std_detect_file_io", "std_detect_dlsym_getauxval", "panic-unwind"]
+backtrace = ["std/backtrace"]
+compiler-builtins-c = ["std/compiler-builtins-c"]
+compiler-builtins-mem = ["std/compiler-builtins-mem"]
+compiler-builtins-no-asm = ["std/compiler-builtins-no-asm"]
+compiler-builtins-mangled-names = ["std/compiler-builtins-mangled-names"]
+llvm-libunwind = ["std/llvm-libunwind"]
+system-llvm-libunwind = ["std/system-llvm-libunwind"]
+panic-unwind = ["std/panic_unwind"]
+panic_immediate_abort = ["std/panic_immediate_abort"]
+profiler = ["std/profiler"]
+std_detect_file_io = ["std/std_detect_file_io"]
+std_detect_dlsym_getauxval = ["std/std_detect_dlsym_getauxval"]
+std_detect_env_override = ["std/std_detect_env_override"]