diff --git a/ci/run.sh b/ci/run.sh
index 3aec98947167bc242982561c0316bdacdb513b85..d0938121c1334775abe99af30db86b639c2edacb 100755
--- a/ci/run.sh
+++ b/ci/run.sh
@@ -83,7 +83,7 @@ if [ "$QEMU" != "" ]; then
 fi
 
 # FIXME: x86_64-unknown-linux-gnux32 fail to compile without --release
-# See https://github.com/rust-lang/rust/issues/45417
+# See https://github.com/rust-lang/rust/issues/59220
 opt=
 if [ "$TARGET" = "x86_64-unknown-linux-gnux32" ]; then
   opt="--release"
diff --git a/src/fuchsia/mod.rs b/src/fuchsia/mod.rs
index a560f7d3027b5a8927ec7415533ed567bddc1ab3..dc8c2a17b978f8b18e7ed7466ab09c4906504d7d 100644
--- a/src/fuchsia/mod.rs
+++ b/src/fuchsia/mod.rs
@@ -1433,10 +1433,8 @@ pub const CLOCK_MONOTONIC_COARSE: ::clockid_t = 6;
 pub const CLOCK_BOOTTIME: ::clockid_t = 7;
 pub const CLOCK_REALTIME_ALARM: ::clockid_t = 8;
 pub const CLOCK_BOOTTIME_ALARM: ::clockid_t = 9;
-// FIXME(#247) Someday our Travis shall have glibc 2.21 (released in Sep
-// 2014.) See also musl/mod.rs
-// pub const CLOCK_SGI_CYCLE: ::clockid_t = 10;
-// pub const CLOCK_TAI: ::clockid_t = 11;
+pub const CLOCK_SGI_CYCLE: ::clockid_t = 10;
+pub const CLOCK_TAI: ::clockid_t = 11;
 pub const TIMER_ABSTIME: ::c_int = 1;
 
 pub const RLIMIT_CPU: ::c_int = 0;
@@ -2773,11 +2771,6 @@ pub const TIOCINQ: ::c_int = ::FIONREAD;
 pub const RTLD_GLOBAL: ::c_int = 0x100;
 pub const RTLD_NOLOAD: ::c_int = 0x4;
 
-// FIXME(#247) Temporarily musl-specific (available since musl 0.9.12 / Linux
-// kernel 3.10).  See also notbsd/mod.rs
-pub const CLOCK_SGI_CYCLE: ::clockid_t = 10;
-pub const CLOCK_TAI: ::clockid_t = 11;
-
 pub const MCL_CURRENT: ::c_int = 0x0001;
 pub const MCL_FUTURE: ::c_int = 0x0002;
 
diff --git a/src/unix/linux_like/emscripten/mod.rs b/src/unix/linux_like/emscripten/mod.rs
index 630cb3afd174c1cc40a7763b6bd2660186bd2fab..9ede79b7b446c5488c601e4e8b3831de0531ea3f 100644
--- a/src/unix/linux_like/emscripten/mod.rs
+++ b/src/unix/linux_like/emscripten/mod.rs
@@ -1287,10 +1287,7 @@ pub const TIOCINQ: ::c_int = ::FIONREAD;
 pub const RTLD_GLOBAL: ::c_int = 0x100;
 pub const RTLD_NOLOAD: ::c_int = 0x4;
 
-// FIXME(#247) Temporarily musl-specific (available since musl 0.9.12 / Linux
-// kernel 3.10).  See also linux_like/mod.rs
 pub const CLOCK_SGI_CYCLE: ::clockid_t = 10;
-pub const CLOCK_TAI: ::clockid_t = 11;
 
 pub const MCL_CURRENT: ::c_int = 0x0001;
 pub const MCL_FUTURE: ::c_int = 0x0002;
diff --git a/src/unix/linux_like/linux/musl/mod.rs b/src/unix/linux_like/linux/musl/mod.rs
index 1d0e900f61cd68c736756f31925a014394394584..73c562c30e1e4680d19bdca30625d36673cfa2fc 100644
--- a/src/unix/linux_like/linux/musl/mod.rs
+++ b/src/unix/linux_like/linux/musl/mod.rs
@@ -328,10 +328,7 @@ pub const TCSAFLUSH: ::c_int = 2;
 pub const RTLD_GLOBAL: ::c_int = 0x100;
 pub const RTLD_NOLOAD: ::c_int = 0x4;
 
-// FIXME(#247) Temporarily musl-specific (available since musl 0.9.12 / Linux
-// kernel 3.10).  See also linux_like/mod.rs
 pub const CLOCK_SGI_CYCLE: ::clockid_t = 10;
-pub const CLOCK_TAI: ::clockid_t = 11;
 
 pub const B0: ::speed_t = 0o000000;
 pub const B50: ::speed_t = 0o000001;
diff --git a/src/unix/linux_like/mod.rs b/src/unix/linux_like/mod.rs
index efc74a35682e617147d0c506d30cfeb096cc024a..a867ed4b080721c9a4fde31fb276dd195b5fa574 100644
--- a/src/unix/linux_like/mod.rs
+++ b/src/unix/linux_like/mod.rs
@@ -499,10 +499,7 @@ pub const CLOCK_MONOTONIC_COARSE: ::clockid_t = 6;
 pub const CLOCK_BOOTTIME: ::clockid_t = 7;
 pub const CLOCK_REALTIME_ALARM: ::clockid_t = 8;
 pub const CLOCK_BOOTTIME_ALARM: ::clockid_t = 9;
-// FIXME(#247) Someday our Travis shall have glibc 2.21 (released in Sep
-// 2014.) See also musl/mod.rs
-// pub const CLOCK_SGI_CYCLE: ::clockid_t = 10;
-// pub const CLOCK_TAI: ::clockid_t = 11;
+pub const CLOCK_TAI: ::clockid_t = 11;
 pub const TIMER_ABSTIME: ::c_int = 1;
 
 pub const RUSAGE_SELF: ::c_int = 0;
diff --git a/src/unix/uclibc/mod.rs b/src/unix/uclibc/mod.rs
index 82500d79319cdf867d72cf15a7067b1d039b1cbe..d6bddc8c9f20db88583b8c9640e9c78976dc4773 100644
--- a/src/unix/uclibc/mod.rs
+++ b/src/unix/uclibc/mod.rs
@@ -512,8 +512,7 @@ pub const CLOCK_REALTIME: ::clockid_t = 0;
 pub const CLOCK_MONOTONIC: ::clockid_t = 1;
 pub const CLOCK_PROCESS_CPUTIME_ID: ::clockid_t = 2;
 pub const CLOCK_THREAD_CPUTIME_ID: ::clockid_t = 3;
-// FIXME(#247) Someday our Travis shall have glibc 2.21 (released in Sep
-// 2014.) See also musl/mod.rs
+// FIXME: Add these constants once uclibc gets them.
 // pub const CLOCK_SGI_CYCLE: ::clockid_t = 10;
 // pub const CLOCK_TAI: ::clockid_t = 11;
 pub const TIMER_ABSTIME: ::c_int = 1;