fix(cargo-install): remove imprecise install root descriptions

Author: weihanglo

src/bin/cargo/cli.rs

@@ -569,7 +569,7 @@ Rust's package manager
     <cyan,bold>update</>      Update dependencies listed in Cargo.lock
     <cyan,bold>search</>      Search registry for crates
     <cyan,bold>publish</>     Package and upload this package to the registry
-    <cyan,bold>install</>     Install a Rust binary. Default location is $HOME/.cargo/bin
+    <cyan,bold>install</>     Install a Rust binary
     <cyan,bold>uninstall</>   Uninstall a Rust binary
     <cyan>...</>         See all commands with <cyan,bold>--list</>
 

src/bin/cargo/commands/install.rs

@@ -15,7 +15,7 @@ use cargo_util::paths;
 
 pub fn cli() -> Command {
     subcommand("install")
-        .about("Install a Rust binary. Default location is $HOME/.cargo/bin")
+        .about("Install a Rust binary")
         .arg(
             Arg::new("crate")
                 .value_name("CRATE[@<VER>]")

tests/testsuite/cargo/help/stdout.log

@@ -33,7 +33,7 @@ Commands:
     update      Update dependencies listed in Cargo.lock
     search      Search registry for crates
     publish     Package and upload this package to the registry
-    install     Install a Rust binary. Default location is $HOME/.cargo/bin
+    install     Install a Rust binary
     uninstall   Uninstall a Rust binary
     ...         See all commands with --list
 

tests/testsuite/cargo_install/help/stdout.log

@@ -1,4 +1,4 @@
-Install a Rust binary. Default location is $HOME/.cargo/bin
+Install a Rust binary
 
 Usage: cargo[EXE] install [OPTIONS] [CRATE[@<VER>]]...