Fix compile

Author: CraftSpider

src/symbolize/gimli/elf.rs

@@ -4,7 +4,7 @@ use super::mystd::os::unix::ffi::OsStrExt;
 use super::mystd::path::{Path, PathBuf};
 use super::Either;
 use super::{gimli, Context, Endian, EndianSlice, Mapping, Stash};
-use alloc::str::String;
+use alloc::string::String;
 use alloc::sync::Arc;
 use alloc::vec::Vec;
 use core::convert::{TryFrom, TryInto};

src/symbolize/gimli/parse_running_mmaps_unix.rs

@@ -5,7 +5,7 @@
 use super::mystd::ffi::OsString;
 use super::mystd::fs::File;
 use super::mystd::io::Read;
-use alloc::str::String;
+use alloc::string::String;
 use alloc::vec::Vec;
 use core::str::FromStr;