diff --git a/Cargo.lock b/Cargo.lock
index 619a1392f..dc930c70b 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -157,9 +157,9 @@ checksum = "d626bb9dae77e28219937af045c257c28bfd3f69333c512553507f5f9798cb76"
 
 [[package]]
 name = "rustc-serialize"
-version = "0.3.24"
+version = "0.3.25"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "dcf128d1287d2ea9d80910b5f1120d0b8eede3fbf1abe91c40d39ea7d51e6fda"
+checksum = "fe834bc780604f4674073badbad26d7219cadfb4a2275802db12cbae17498401"
 
 [[package]]
 name = "serde"
diff --git a/ci/run-docker.sh b/ci/run-docker.sh
index 8aa6d84a4..ea77c785d 100755
--- a/ci/run-docker.sh
+++ b/ci/run-docker.sh
@@ -18,7 +18,7 @@ run() {
       --volume `pwd`/target:/checkout/target \
       --workdir /checkout \
       --privileged \
-      --env RUSTFLAGS \
+      --env RUSTFLAGS="-Lnative=/usr/lib/x86_64-linux-musl/" \
       backtrace \
       bash \
       -c 'PATH=$PATH:/rust/bin exec ci/run.sh'
diff --git a/src/print/fuchsia.rs b/src/print/fuchsia.rs
index cb872697d..6e0e7ddd0 100644
--- a/src/print/fuchsia.rs
+++ b/src/print/fuchsia.rs
@@ -336,7 +336,7 @@ fn get_build_id<'a>(info: &'a dl_phdr_info) -> Option<&'a [u8]> {
 enum Error {
     /// NameError means that an error occurred while converting a C style string
     /// into a rust string.
-    NameError(core::str::Utf8Error),
+    NameError,
     /// BuildIDError means that we didn't find a build ID. This could either be
     /// because the DSO had no build ID or because the segment containing the
     /// build ID was malformed.
@@ -362,8 +362,8 @@ fn for_each_dso(mut visitor: &mut DsoPrinter<'_, '_>) {
             unsafe { core::slice::from_raw_parts(info.name as *const u8, name_len) };
         let name = match core::str::from_utf8(name_slice) {
             Ok(name) => name,
-            Err(err) => {
-                return visitor.error(Error::NameError(err)) as i32;
+            Err(_) => {
+                return visitor.error(Error::NameError) as i32;
             }
         };
         let build_id = match get_build_id(info) {
diff --git a/src/windows.rs b/src/windows.rs
index e85fbf167..4e72de8a8 100644
--- a/src/windows.rs
+++ b/src/windows.rs
@@ -7,7 +7,7 @@
 //! This module largely exists to integrate into libstd itself where winapi is
 //! not currently available.
 
-#![allow(bad_style, dead_code)]
+#![allow(bad_style, dead_code, unused)]
 
 cfg_if::cfg_if! {
     if #[cfg(feature = "verify-winapi")] {
diff --git a/tests/current-exe-mismatch.rs b/tests/current-exe-mismatch.rs
index b655827fb..e305b6677 100644
--- a/tests/current-exe-mismatch.rs
+++ b/tests/current-exe-mismatch.rs
@@ -16,7 +16,7 @@ fn main() {
             Ok(()) => {
                 println!("test result: ok");
             }
-            Err(EarlyExit::IgnoreTest(_)) => {
+            Err(EarlyExit::IgnoreTest) => {
                 println!("test result: ignored");
             }
             Err(EarlyExit::IoError(e)) => {
@@ -34,7 +34,7 @@ const VAR: &str = "__THE_TEST_YOU_ARE_LUKE";
 
 #[derive(Debug)]
 enum EarlyExit {
-    IgnoreTest(String),
+    IgnoreTest,
     IoError(std::io::Error),
 }
 
@@ -47,7 +47,7 @@ impl From<std::io::Error> for EarlyExit {
 fn parent() -> Result<(), EarlyExit> {
     // If we cannot re-exec this test, there's no point in trying to do it.
     if common::cannot_reexec_the_test() {
-        return Err(EarlyExit::IgnoreTest("(cannot reexec)".into()));
+        return Err(EarlyExit::IgnoreTest);
     }
 
     let me = std::env::current_exe().unwrap();
@@ -111,7 +111,7 @@ fn find_interpreter(me: &Path) -> Result<PathBuf, EarlyExit> {
         .arg("-l")
         .arg(me)
         .output()
-        .map_err(|_err| EarlyExit::IgnoreTest("readelf invocation failed".into()))?;
+        .map_err(|_| EarlyExit::IgnoreTest)?;
     if result.status.success() {
         let r = BufReader::new(&result.stdout[..]);
         for line in r.lines() {
@@ -124,11 +124,6 @@ fn find_interpreter(me: &Path) -> Result<PathBuf, EarlyExit> {
                 }
             }
         }
-
-        Err(EarlyExit::IgnoreTest(
-            "could not find interpreter from readelf output".into(),
-        ))
-    } else {
-        Err(EarlyExit::IgnoreTest("readelf returned non-success".into()))
     }
+    Err(EarlyExit::IgnoreTest)
 }