diff --git a/.travis.yml b/.travis.yml
index 27663f7c0..b3644ab41 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -7,12 +7,6 @@ matrix:
     - rust: stable
       os: osx
       env: FEATURES=''
-    - rust: 1.20.0
-      os: linux
-      env: FEATURES=''
-    - rust: 1.20.0
-      os: osx
-      env: FEATURES=''
     - rust: beta
       os: linux
       env: FEATURES=''
diff --git a/README.md b/README.md
index 30a202786..70c004b3d 100644
--- a/README.md
+++ b/README.md
@@ -24,7 +24,8 @@ to compile anywhere, and this is as good a way as any to try and learn it.
 Rust Version
 ------------
 
-uutils supports and is tested on version `1.20.0` and above (including beta and nightly builds) of `rustc`.
+uutils follows Rust's release channels and is tested against stable, beta and nightly.
+To check which one is the latest stable version of Rust visit [Rust's releases page](https://github.com/rust-lang/rust/releases).
 
 On Windows, only the nightly version is tested currently.
 
diff --git a/tests/test_chmod.rs b/tests/test_chmod.rs
index 9a81da92f..19a76e483 100644
--- a/tests/test_chmod.rs
+++ b/tests/test_chmod.rs
@@ -31,7 +31,7 @@ fn run_single_test(test: &TestCase, at: AtPath, mut ucmd: UCommand) {
         mkfile(&at.plus_as_string(TEST_FILE), test.before);
         let perms = at.metadata(TEST_FILE).permissions().mode();
         if perms != test.before {
-            panic!(format!("{}: expected: {:o} got: {:o}", "setting permissions failed", test.after, perms));
+            panic!(format!("{}: expected: {:o} got: {:o}", "setting permissions on test files before actual test run failed", test.after, perms));
         }
 
         for arg in &test.args {
@@ -59,15 +59,15 @@ fn run_tests(tests: Vec<TestCase>) {
 #[test]
 fn test_chmod_octal() {
     let tests = vec!{
-        TestCase{args: vec!{"0700",  TEST_FILE}, before: 0o000, after: 0o700},
-        TestCase{args: vec!{"0070",  TEST_FILE}, before: 0o000, after: 0o070},
-        TestCase{args: vec!{"0007",  TEST_FILE}, before: 0o000, after: 0o007},
-        TestCase{args: vec!{"-0700", TEST_FILE}, before: 0o700, after: 0o000},
-        TestCase{args: vec!{"-0070", TEST_FILE}, before: 0o060, after: 0o000},
-        TestCase{args: vec!{"-0007", TEST_FILE}, before: 0o001, after: 0o000},
-        TestCase{args: vec!{"+0100", TEST_FILE}, before: 0o600, after: 0o700},
-        TestCase{args: vec!{"+0020", TEST_FILE}, before: 0o050, after: 0o070},
-        TestCase{args: vec!{"+0004", TEST_FILE}, before: 0o003, after: 0o007},
+        TestCase{args: vec!{"0700",  TEST_FILE}, before: 0o100000, after: 0o100700},
+        TestCase{args: vec!{"0070",  TEST_FILE}, before: 0o100000, after: 0o100070},
+        TestCase{args: vec!{"0007",  TEST_FILE}, before: 0o100000, after: 0o100007},
+        TestCase{args: vec!{"-0700", TEST_FILE}, before: 0o100700, after: 0o100000},
+        TestCase{args: vec!{"-0070", TEST_FILE}, before: 0o100060, after: 0o100000},
+        TestCase{args: vec!{"-0007", TEST_FILE}, before: 0o100001, after: 0o100000},
+        TestCase{args: vec!{"+0100", TEST_FILE}, before: 0o100600, after: 0o100700},
+        TestCase{args: vec!{"+0020", TEST_FILE}, before: 0o100050, after: 0o100070},
+        TestCase{args: vec!{"+0004", TEST_FILE}, before: 0o100003, after: 0o100007},
     };
     run_tests(tests);
 }
@@ -80,13 +80,13 @@ fn test_chmod_ugoa() {
         umask(0)
     };
     let tests = vec!{
-        TestCase{args: vec!{"u=rwx", TEST_FILE}, before: 0o000, after: 0o700},
-        TestCase{args: vec!{"g=rwx", TEST_FILE}, before: 0o000, after: 0o070},
-        TestCase{args: vec!{"o=rwx", TEST_FILE}, before: 0o000, after: 0o007},
-        TestCase{args: vec!{"a=rwx", TEST_FILE}, before: 0o000, after: 0o777},
-        TestCase{args: vec!{"-r", TEST_FILE}, before: 0o777, after: 0o333},
-        TestCase{args: vec!{"-w", TEST_FILE}, before: 0o777, after: 0o555},
-        TestCase{args: vec!{"-x", TEST_FILE}, before: 0o777, after: 0o666},
+        TestCase{args: vec!{"u=rwx", TEST_FILE}, before: 0o100000, after: 0o100700},
+        TestCase{args: vec!{"g=rwx", TEST_FILE}, before: 0o100000, after: 0o100070},
+        TestCase{args: vec!{"o=rwx", TEST_FILE}, before: 0o100000, after: 0o100007},
+        TestCase{args: vec!{"a=rwx", TEST_FILE}, before: 0o100000, after: 0o100777},
+        TestCase{args: vec!{"-r", TEST_FILE}, before: 0o100777, after: 0o100333},
+        TestCase{args: vec!{"-w", TEST_FILE}, before: 0o100777, after: 0o100555},
+        TestCase{args: vec!{"-x", TEST_FILE}, before: 0o100777, after: 0o100666},
     };
     run_tests(tests);
 
@@ -94,14 +94,14 @@ fn test_chmod_ugoa() {
         umask(0o022);
     }
     let tests = vec!{
-        TestCase{args: vec!{"u=rwx", TEST_FILE}, before: 0o000, after: 0o700},
-        TestCase{args: vec!{"g=rwx", TEST_FILE}, before: 0o000, after: 0o070},
-        TestCase{args: vec!{"o=rwx", TEST_FILE}, before: 0o000, after: 0o007},
-        TestCase{args: vec!{"a=rwx", TEST_FILE}, before: 0o000, after: 0o777},
-        TestCase{args: vec!{"+rw", TEST_FILE}, before: 0o000, after: 0o644},
-        TestCase{args: vec!{"=rwx", TEST_FILE}, before: 0o000, after: 0o755},
-        TestCase{args: vec!{"-w", TEST_FILE}, before: 0o777, after: 0o577},
-        TestCase{args: vec!{"-x", TEST_FILE}, before: 0o777, after: 0o666},
+        TestCase{args: vec!{"u=rwx", TEST_FILE}, before: 0o100000, after: 0o100700},
+        TestCase{args: vec!{"g=rwx", TEST_FILE}, before: 0o100000, after: 0o100070},
+        TestCase{args: vec!{"o=rwx", TEST_FILE}, before: 0o100000, after: 0o100007},
+        TestCase{args: vec!{"a=rwx", TEST_FILE}, before: 0o100000, after: 0o100777},
+        TestCase{args: vec!{"+rw", TEST_FILE}, before: 0o100000, after: 0o100644},
+        TestCase{args: vec!{"=rwx", TEST_FILE}, before: 0o100000, after: 0o100755},
+        TestCase{args: vec!{"-w", TEST_FILE}, before: 0o100777, after: 0o100577},
+        TestCase{args: vec!{"-x", TEST_FILE}, before: 0o100777, after: 0o100666},
     };
     run_tests(tests);
     unsafe {
@@ -112,11 +112,11 @@ fn test_chmod_ugoa() {
 #[test]
 fn test_chmod_ugo_copy() {
     let tests = vec!{
-        TestCase{args: vec!{"u=g", TEST_FILE}, before: 0o070, after: 0o770},
-        TestCase{args: vec!{"g=o", TEST_FILE}, before: 0o005, after: 0o055},
-        TestCase{args: vec!{"o=u", TEST_FILE}, before: 0o200, after: 0o202},
-        TestCase{args: vec!{"u-g", TEST_FILE}, before: 0o710, after: 0o610},
-        TestCase{args: vec!{"u+g", TEST_FILE}, before: 0o250, after: 0o750},
+        TestCase{args: vec!{"u=g", TEST_FILE}, before: 0o100070, after: 0o100770},
+        TestCase{args: vec!{"g=o", TEST_FILE}, before: 0o100005, after: 0o100055},
+        TestCase{args: vec!{"o=u", TEST_FILE}, before: 0o100200, after: 0o100202},
+        TestCase{args: vec!{"u-g", TEST_FILE}, before: 0o100710, after: 0o100610},
+        TestCase{args: vec!{"u+g", TEST_FILE}, before: 0o100250, after: 0o100750},
     };
     run_tests(tests);
 }
@@ -129,7 +129,7 @@ fn test_chmod_many_options() {
         umask(0)
     };
     let tests = vec!{
-        TestCase{args: vec!{"-r,a+w", TEST_FILE}, before: 0o444, after: 0o222},
+        TestCase{args: vec!{"-r,a+w", TEST_FILE}, before: 0o100444, after: 0o100222},
     };
     run_tests(tests);
     unsafe {
@@ -140,8 +140,8 @@ fn test_chmod_many_options() {
 #[test]
 fn test_chmod_reference_file() {
     let tests = vec!{
-        TestCase{args: vec!{"--reference", REFERENCE_FILE, TEST_FILE}, before: 0o070, after: 0o247},
-        TestCase{args: vec!{"a-w", "--reference", REFERENCE_FILE, TEST_FILE}, before: 0o070, after: 0o247},
+        TestCase{args: vec!{"--reference", REFERENCE_FILE, TEST_FILE}, before: 0o100070, after: 0o100247},
+        TestCase{args: vec!{"a-w", "--reference", REFERENCE_FILE, TEST_FILE}, before: 0o100070, after: 0o100247},
     };
     let (at, ucmd) = at_and_ucmd!();
     mkfile(&at.plus_as_string(REFERENCE_FILE), REFERENCE_PERMS);
diff --git a/tests/test_install.rs b/tests/test_install.rs
index 85585afc8..6c9afbc5c 100644
--- a/tests/test_install.rs
+++ b/tests/test_install.rs
@@ -85,7 +85,7 @@ fn test_install_mode_numeric() {
     assert!(at.file_exists(file));
     assert!(at.file_exists(dest_file));
     let permissions = at.metadata(dest_file).permissions();
-    assert_eq!(0o333 as u32, PermissionsExt::mode(&permissions));
+    assert_eq!(0o100333 as u32, PermissionsExt::mode(&permissions));
 }
 
 #[test]
@@ -103,7 +103,7 @@ fn test_install_mode_symbolic() {
     assert!(at.file_exists(file));
     assert!(at.file_exists(dest_file));
     let permissions = at.metadata(dest_file).permissions();
-    assert_eq!(0o003 as u32, PermissionsExt::mode(&permissions));
+    assert_eq!(0o100003 as u32, PermissionsExt::mode(&permissions));
 }
 
 #[test]
@@ -134,5 +134,5 @@ fn test_install_mode_directories() {
 
     assert!(at.dir_exists(component));
     let permissions = at.metadata(component).permissions();
-    assert_eq!(0o333 as u32, PermissionsExt::mode(&permissions));
+    assert_eq!(0o040333 as u32, PermissionsExt::mode(&permissions));
 }