Reenable tests that only failed on Travis, since we no longer use it.

Author: asomers

test/sys/test_aio.rs

@@ -142,9 +142,7 @@ fn test_fsync_error() {
 }
 
 #[test]
-#[cfg_attr(all(target_env = "musl", target_arch = "x86_64"), ignore)]
-// On Travis, aio_suspend hits an assertion within glibc.  This is either a bug
-// in Travis's version of glibc or Linux.  Either way, we must skip the test.
+// On Cirrus on Linux, this test fails due to a glibc bug.
 // https://github.com/nix-rust/nix/issues/1099
 #[cfg_attr(target_os = "linux", ignore)]
 // On Cirrus, aio_suspend is failing with EINVAL

test/sys/test_aio_drop.rs

@@ -9,7 +9,6 @@
               target_os = "macos",
               target_os = "freebsd",
               target_os = "netbsd")))]
-#[cfg_attr(target_env = "gnu", ignore = "Occasionally fails in Travis; glibc bug suspected")]
 fn test_drop() {
     use nix::sys::aio::*;
     use nix::sys::signal::*;

test/test_fcntl.rs

@@ -102,11 +102,15 @@ mod linux_android {
     /// resulting file is read and should contain the contents `bar`.
     /// The from_offset should be updated by the call to reflect
     /// the 3 bytes read (6).
-    ///
-    /// FIXME: This test is disabled for linux based builds, because Travis
-    /// Linux version is too old for `copy_file_range`.
     #[test]
-    #[ignore]
+    // QEMU does not support copy_file_range. Skip platforms that use QEMU in CI
+    #[cfg_attr(all(target_os = "linux", any(
+            target_arch = "aarch64",
+            target_arch = "arm",
+            target_arch = "mips",
+            target_arch = "mips64",
+            target_arch = "powerpc64"
+    )), ignore)]
     fn test_copy_file_range() {
         const CONTENTS: &[u8] = b"foobarbaz";
 

test/test_ptymaster_drop.rs

@@ -12,10 +12,6 @@ mod t {
     /// race condition.
     #[test]
     #[should_panic(expected = "Closing an invalid file descriptor!")]
-    // In Travis on i686-unknown-linux-musl, this test gets SIGABRT.  I don't
-    // know why.  It doesn't happen on any other target, and it doesn't happen
-    // on my PC.
-    #[cfg_attr(all(target_env = "musl", target_arch = "x86"), ignore)]
     fn test_double_close() {
         let m = posix_openpt(OFlag::O_RDWR).unwrap();
         close(m.as_raw_fd()).unwrap();