Rollup of 14 pull requests

RELEASES.md

@@ -144,7 +144,7 @@ Compatibility Notes
 [`alloc::handle_alloc_error`]: https://doc.rust-lang.org/std/alloc/fn.handle_alloc_error.html
 [`btree_map::Entry::or_default`]: https://doc.rust-lang.org/std/collections/btree_map/enum.Entry.html#method.or_default
 [`fmt::Alignment`]: https://doc.rust-lang.org/std/fmt/enum.Alignment.html
-[`hash_map::Entry::or_default`]: https://doc.rust-lang.org/std/collections/btree_map/enum.Entry.html#method.or_default
+[`hash_map::Entry::or_default`]: https://doc.rust-lang.org/std/collections/hash_map/enum.Entry.html#method.or_default
 [`iter::repeat_with`]: https://doc.rust-lang.org/std/iter/fn.repeat_with.html
 [`num::NonZeroUsize`]: https://doc.rust-lang.org/std/num/struct.NonZeroUsize.html
 [`num::NonZeroU128`]: https://doc.rust-lang.org/std/num/struct.NonZeroU128.html

src/bootstrap/builder.rs

@@ -777,7 +777,7 @@ impl<'a> Builder<'a> {
         // compiler, but for tools we just use the precompiled libraries that
         // we've downloaded
         let use_snapshot = mode == Mode::ToolBootstrap;
-        assert!(!use_snapshot || stage == 0);
+        assert!(!use_snapshot || stage == 0 || self.local_rebuild);
 
         let maybe_sysroot = self.sysroot(compiler);
         let sysroot = if use_snapshot {

src/ci/docker/x86_64-gnu-tools/checktools.sh

@@ -17,9 +17,11 @@ TOOLSTATE_FILE="$(realpath $2)"
 OS="$3"
 COMMIT="$(git rev-parse HEAD)"
 CHANGED_FILES="$(git diff --name-status HEAD HEAD^)"
-SIX_WEEK_CYCLE="$(( ($(date +%s) / 604800 - 3) % 6 ))"
-# ^ 1970 Jan 1st is a Thursday, and our release dates are also on Thursdays,
-#   thus we could divide by 604800 (7 days in seconds) directly.
+SIX_WEEK_CYCLE="$(( ($(date +%s) / 86400 - 20) % 42 ))"
+# ^ Number of days after the last promotion of beta.
+#   Its value is 41 on the Tuesday where "Promote master to beta (T-2)" happens.
+#   The Wednesday after this has value 0.
+#   We track this value to prevent regressing tools in the last week of the 6-week cycle.
 
 touch "$TOOLSTATE_FILE"
 
@@ -98,7 +100,7 @@ change_toolstate() {
     if python2.7 "$CHECK_NOT" "$OS" "$TOOLSTATE_FILE" "_data/latest.json" changed; then
         echo 'Toolstate is not changed. Not updating.'
     else
-        if [ $SIX_WEEK_CYCLE -eq 5 ]; then
+        if [ $SIX_WEEK_CYCLE -ge 35 ]; then
             python2.7 "$CHECK_NOT" "$OS" "$TOOLSTATE_FILE" "_data/latest.json" regressed
         fi
         sed -i "1 a\\

src/libcore/cell.rs

@@ -1258,7 +1258,7 @@ impl<'b, T: ?Sized> RefMut<'b, T> {
         let RefMut { value, borrow } = orig;
         RefMut {
             value: f(value),
-            borrow: borrow,
+            borrow,
         }
     }
 
@@ -1324,7 +1324,7 @@ impl<'b> BorrowRefMut<'b> {
         match borrow.get() {
             UNUSED => {
                 borrow.set(UNUSED - 1);
-                Some(BorrowRefMut { borrow: borrow })
+                Some(BorrowRefMut { borrow })
             },
             _ => None,
         }
@@ -1467,7 +1467,7 @@ impl<T> UnsafeCell<T> {
     #[stable(feature = "rust1", since = "1.0.0")]
     #[inline]
     pub const fn new(value: T) -> UnsafeCell<T> {
-        UnsafeCell { value: value }
+        UnsafeCell { value }
     }
 
     /// Unwraps the value.

src/libcore/iter/iterator.rs

@@ -507,7 +507,7 @@ pub trait Iterator {
     fn map<B, F>(self, f: F) -> Map<Self, F> where
         Self: Sized, F: FnMut(Self::Item) -> B,
     {
-        Map{iter: self, f: f}
+        Map { iter: self, f }
     }
 
     /// Calls a closure on each element of an iterator.
@@ -618,7 +618,7 @@ pub trait Iterator {
     fn filter<P>(self, predicate: P) -> Filter<Self, P> where
         Self: Sized, P: FnMut(&Self::Item) -> bool,
     {
-        Filter{iter: self, predicate: predicate}
+        Filter {iter: self, predicate }
     }
 
     /// Creates an iterator that both filters and maps.
@@ -675,7 +675,7 @@ pub trait Iterator {
     fn filter_map<B, F>(self, f: F) -> FilterMap<Self, F> where
         Self: Sized, F: FnMut(Self::Item) -> Option<B>,
     {
-        FilterMap { iter: self, f: f }
+        FilterMap { iter: self, f }
     }
 
     /// Creates an iterator which gives the current iteration count as well as
@@ -828,7 +828,7 @@ pub trait Iterator {
     fn skip_while<P>(self, predicate: P) -> SkipWhile<Self, P> where
         Self: Sized, P: FnMut(&Self::Item) -> bool,
     {
-        SkipWhile{iter: self, flag: false, predicate: predicate}
+        SkipWhile { iter: self, flag: false, predicate }
     }
 
     /// Creates an iterator that yields elements based on a predicate.
@@ -908,7 +908,7 @@ pub trait Iterator {
     fn take_while<P>(self, predicate: P) -> TakeWhile<Self, P> where
         Self: Sized, P: FnMut(&Self::Item) -> bool,
     {
-        TakeWhile{iter: self, flag: false, predicate: predicate}
+        TakeWhile { iter: self, flag: false, predicate }
     }
 
     /// Creates an iterator that skips the first `n` elements.
@@ -930,7 +930,7 @@ pub trait Iterator {
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
     fn skip(self, n: usize) -> Skip<Self> where Self: Sized {
-        Skip{iter: self, n: n}
+        Skip { iter: self, n }
     }
 
     /// Creates an iterator that yields its first `n` elements.
@@ -962,7 +962,7 @@ pub trait Iterator {
     #[inline]
     #[stable(feature = "rust1", since = "1.0.0")]
     fn take(self, n: usize) -> Take<Self> where Self: Sized, {
-        Take{iter: self, n: n}
+        Take { iter: self, n }
     }
 
     /// An iterator adaptor similar to [`fold`] that holds internal state and
@@ -1007,7 +1007,7 @@ pub trait Iterator {
     fn scan<St, B, F>(self, initial_state: St, f: F) -> Scan<Self, St, F>
         where Self: Sized, F: FnMut(&mut St, Self::Item) -> Option<B>,
     {
-        Scan{iter: self, f: f, state: initial_state}
+        Scan { iter: self, f, state: initial_state }
     }
 
     /// Creates an iterator that works like map, but flattens nested structure.
@@ -1256,7 +1256,7 @@ pub trait Iterator {
     fn inspect<F>(self, f: F) -> Inspect<Self, F> where
         Self: Sized, F: FnMut(&Self::Item),
     {
-        Inspect{iter: self, f: f}
+        Inspect { iter: self, f }
     }
 
     /// Borrows an iterator, rather than consuming it.

src/libcore/num/dec2flt/parse.rs

@@ -40,7 +40,7 @@ pub struct Decimal<'a> {
 
 impl<'a> Decimal<'a> {
     pub fn new(integral: &'a [u8], fractional: &'a [u8], exp: i64) -> Decimal<'a> {
-        Decimal { integral: integral, fractional: fractional, exp: exp }
+        Decimal { integral, fractional, exp }
     }
 }
 

src/libcore/num/dec2flt/rawfp.rs

@@ -45,7 +45,7 @@ pub struct Unpacked {
 
 impl Unpacked {
     pub fn new(sig: u64, k: i16) -> Self {
-        Unpacked { sig: sig, k: k }
+        Unpacked { sig, k }
     }
 }
 
@@ -317,13 +317,13 @@ pub fn big_to_fp(f: &Big) -> Fp {
     // We cut off all bits prior to the index `start`, i.e., we effectively right-shift by
     // an amount of `start`, so this is also the exponent we need.
     let e = start as i16;
-    let rounded_down = Fp { f: leading, e: e }.normalize();
+    let rounded_down = Fp { f: leading, e }.normalize();
     // Round (half-to-even) depending on the truncated bits.
     match num::compare_with_half_ulp(f, start) {
         Less => rounded_down,
         Equal if leading % 2 == 0 => rounded_down,
         Equal | Greater => match leading.checked_add(1) {
-            Some(f) => Fp { f: f, e: e }.normalize(),
+            Some(f) => Fp { f, e }.normalize(),
             None => Fp { f: 1 << 63, e: e + 1 },
         }
     }

src/libcore/num/diy_float.rs

@@ -42,7 +42,7 @@ impl Fp {
         let tmp = (bd >> 32) + (ad & MASK) + (bc & MASK) + (1 << 31) /* round */;
         let f = ac + (ad >> 32) + (bc >> 32) + (tmp >> 32);
         let e = self.e + other.e + 64;
-        Fp { f: f, e: e }
+        Fp { f, e }
     }
 
     /// Normalizes itself so that the resulting mantissa is at least `2^63`.
@@ -74,7 +74,7 @@ impl Fp {
             e -= 1;
         }
         debug_assert!(f >= (1 >> 63));
-        Fp { f: f, e: e }
+        Fp { f, e }
     }
 
     /// Normalizes itself to have the shared exponent.

src/libcore/num/flt2dec/decoder.rs

@@ -77,8 +77,8 @@ pub fn decode<T: DecodableFloat>(v: T) -> (/*negative?*/ bool, FullDecoded) {
             // neighbors: (mant - 2, exp) -- (mant, exp) -- (mant + 2, exp)
             // Float::integer_decode always preserves the exponent,
             // so the mantissa is scaled for subnormals.
-            FullDecoded::Finite(Decoded { mant: mant, minus: 1, plus: 1,
-                                          exp: exp, inclusive: even })
+            FullDecoded::Finite(Decoded { mant, minus: 1, plus: 1,
+                                          exp, inclusive: even })
         }
         FpCategory::Normal => {
             let minnorm = <T as DecodableFloat>::min_pos_norm_value().integer_decode();

src/libcore/num/flt2dec/mod.rs

@@ -424,20 +424,20 @@ pub fn to_shortest_str<'a, T, F>(mut format_shortest: F, v: T,
     match full_decoded {
         FullDecoded::Nan => {
             parts[0] = Part::Copy(b"NaN");
-            Formatted { sign: sign, parts: &parts[..1] }
+            Formatted { sign, parts: &parts[..1] }
         }
         FullDecoded::Infinite => {
             parts[0] = Part::Copy(b"inf");
-            Formatted { sign: sign, parts: &parts[..1] }
+            Formatted { sign, parts: &parts[..1] }
         }
         FullDecoded::Zero => {
             if frac_digits > 0 { // [0.][0000]
                 parts[0] = Part::Copy(b"0.");
                 parts[1] = Part::Zero(frac_digits);
-                Formatted { sign: sign, parts: &parts[..2] }
+                Formatted { sign, parts: &parts[..2] }
             } else {
                 parts[0] = Part::Copy(b"0");
-                Formatted { sign: sign, parts: &parts[..1] }
+                Formatted { sign, parts: &parts[..1] }
             }
         }
         FullDecoded::Finite(ref decoded) => {
@@ -480,19 +480,19 @@ pub fn to_shortest_exp_str<'a, T, F>(mut format_shortest: F, v: T,
     match full_decoded {
         FullDecoded::Nan => {
             parts[0] = Part::Copy(b"NaN");
-            Formatted { sign: sign, parts: &parts[..1] }
+            Formatted { sign, parts: &parts[..1] }
         }
         FullDecoded::Infinite => {
             parts[0] = Part::Copy(b"inf");
-            Formatted { sign: sign, parts: &parts[..1] }
+            Formatted { sign, parts: &parts[..1] }
         }
         FullDecoded::Zero => {
             parts[0] = if dec_bounds.0 <= 0 && 0 < dec_bounds.1 {
                 Part::Copy(b"0")
             } else {
                 Part::Copy(if upper { b"0E0" } else { b"0e0" })
             };
-            Formatted { sign: sign, parts: &parts[..1] }
+            Formatted { sign, parts: &parts[..1] }
         }
         FullDecoded::Finite(ref decoded) => {
             let (len, exp) = format_shortest(decoded, buf);
@@ -502,7 +502,7 @@ pub fn to_shortest_exp_str<'a, T, F>(mut format_shortest: F, v: T,
             } else {
                 digits_to_exp_str(&buf[..len], exp, 0, upper, parts)
             };
-            Formatted { sign: sign, parts: parts }
+            Formatted { sign, parts }
         }
     }
 }
@@ -558,21 +558,21 @@ pub fn to_exact_exp_str<'a, T, F>(mut format_exact: F, v: T,
     match full_decoded {
         FullDecoded::Nan => {
             parts[0] = Part::Copy(b"NaN");
-            Formatted { sign: sign, parts: &parts[..1] }
+            Formatted { sign, parts: &parts[..1] }
         }
         FullDecoded::Infinite => {
             parts[0] = Part::Copy(b"inf");
-            Formatted { sign: sign, parts: &parts[..1] }
+            Formatted { sign, parts: &parts[..1] }
         }
         FullDecoded::Zero => {
             if ndigits > 1 { // [0.][0000][e0]
                 parts[0] = Part::Copy(b"0.");
                 parts[1] = Part::Zero(ndigits - 1);
                 parts[2] = Part::Copy(if upper { b"E0" } else { b"e0" });
-                Formatted { sign: sign, parts: &parts[..3] }
+                Formatted { sign, parts: &parts[..3] }
             } else {
                 parts[0] = Part::Copy(if upper { b"0E0" } else { b"0e0" });
-                Formatted { sign: sign, parts: &parts[..1] }
+                Formatted { sign, parts: &parts[..1] }
             }
         }
         FullDecoded::Finite(ref decoded) => {
@@ -613,20 +613,20 @@ pub fn to_exact_fixed_str<'a, T, F>(mut format_exact: F, v: T,
     match full_decoded {
         FullDecoded::Nan => {
             parts[0] = Part::Copy(b"NaN");
-            Formatted { sign: sign, parts: &parts[..1] }
+            Formatted { sign, parts: &parts[..1] }
         }
         FullDecoded::Infinite => {
             parts[0] = Part::Copy(b"inf");
-            Formatted { sign: sign, parts: &parts[..1] }
+            Formatted { sign, parts: &parts[..1] }
         }
         FullDecoded::Zero => {
             if frac_digits > 0 { // [0.][0000]
                 parts[0] = Part::Copy(b"0.");
                 parts[1] = Part::Zero(frac_digits);
-                Formatted { sign: sign, parts: &parts[..2] }
+                Formatted { sign, parts: &parts[..2] }
             } else {
                 parts[0] = Part::Copy(b"0");
-                Formatted { sign: sign, parts: &parts[..1] }
+                Formatted { sign, parts: &parts[..1] }
             }
         }
         FullDecoded::Finite(ref decoded) => {
@@ -646,10 +646,10 @@ pub fn to_exact_fixed_str<'a, T, F>(mut format_exact: F, v: T,
                 if frac_digits > 0 { // [0.][0000]
                     parts[0] = Part::Copy(b"0.");
                     parts[1] = Part::Zero(frac_digits);
-                    Formatted { sign: sign, parts: &parts[..2] }
+                    Formatted { sign, parts: &parts[..2] }
                 } else {
                     parts[0] = Part::Copy(b"0");
-                    Formatted { sign: sign, parts: &parts[..1] }
+                    Formatted { sign, parts: &parts[..1] }
                 }
             } else {
                 Formatted { sign,

src/libcore/num/flt2dec/strategy/grisu.rs

@@ -129,7 +129,7 @@ pub fn cached_power(alpha: i16, gamma: i16) -> (i16, Fp) {
     let idx = ((gamma as i32) - offset) * range / domain;
     let (f, e, k) = CACHED_POW10[idx as usize];
     debug_assert!(alpha <= e && e <= gamma);
-    (k, Fp { f: f, e: e })
+    (k, Fp { f, e })
 }
 
 /// Given `x > 0`, returns `(k, 10^k)` such that `10^k <= x < 10^(k+1)`.