remove autogenerated cargo config before installing tools

tutorials/gn/gn.toml

@@ -20,6 +20,8 @@ exit_on_error true
 mkdir tutorials/gn/third_party_tools
 cd tutorials/gn/third_party_tools
 
+
+
 # depot_tools contains the following things we need:
 # 1. A cross-platform ninja wrapper script
 # 2. cipd, a tool to download a prebuilt GN binary
@@ -46,6 +48,10 @@ else
     exec --fail-on-error ln -s Cargo.toml.crates-io fuchsia/tools/cargo-gnaw/Cargo.toml
 end
 
+# Unfortunately this (autogenerated, not-checked-in) file needs to be removed for the next install to work correctly.
+# There is currently no way to override cargo config inheritance.
+rm ../.cargo/config
+
 # Install GNaw locally in the bin directory (alongside GN)
 exec --fail-on-error cargo install --path fuchsia/tools/cargo-gnaw --root .