a

error[E0275]: overflow evaluating the requirement `<ieee::IeeeFloat<S> as std::ops::Rem>::Output == StatusAnd<ieee::IeeeFloat<S>>`
   --> librustc_apfloat/ieee.rs:635:20
    |
635 | impl<S: Semantics> Float for IeeeFloat<S> {
    |                    ^^^^^

error: aborting due to previous error

For more information about this error, try `rustc --explain E0275`.
error: Could not compile `rustc_apfloat`.                                                           
warning: build failed, waiting for other jobs to finish...
error: build failed                                                                                 
command did not execute successfully: "/Users/alex/Software/rust-devel/build/x86_64-apple-darwin/stage0/bin/cargo" "build" "--target" "x86_64-apple-darwin" "-j" "8" "--release" "--features" "" "--manifest-path" "/Users/alex/Software/rust-devel/src/rustc/Cargo.toml" "--message-format" "json"
expected success, got: exit code: 101
thread 'main' panicked at 'cargo must succeed', bootstrap/compile.rs:1101:9
stack backtrace:
   0: std::sys::unix::backtrace::tracing::imp::unwind_backtrace
             at libstd/sys/unix/backtrace/tracing/gcc_s.rs:49
   1: std::sys_common::backtrace::print
             at libstd/sys_common/backtrace.rs:71
             at libstd/sys_common/backtrace.rs:59
   2: std::panicking::default_hook::{{closure}}
             at libstd/panicking.rs:211
   3: std::panicking::default_hook
             at libstd/panicking.rs:227
   4: <std::panicking::begin_panic::PanicPayload<A> as core::panic::BoxMeUp>::get
             at libstd/panicking.rs:476
   5: <core::str::CharIndices<'a> as core::iter::iterator::Iterator>::next
             at libstd/panicking.rs:410
   6: bootstrap::compile::run_cargo
             at bootstrap/compile.rs:1101
   7: bootstrap::compile::test_cargo
             at bootstrap/compile.rs:503
   8: bootstrap::builder::Builder::cargo::{{closure}}
             at bootstrap/builder.rs:1215
   9: bootstrap::compile::compiler_file
             at bootstrap/compile.rs:959
  10: bootstrap::builder::Builder::cargo::{{closure}}
             at bootstrap/builder.rs:1215
  11: bootstrap::builder::Builder::run_step_descriptions
             at bootstrap/builder.rs:579
  12: std::thread::panicking
             at bootstrap/compile.rs:55
  13: bootstrap::builder::StepDescription::maybe_run
             at bootstrap/builder.rs:191
  14: bootstrap::builder::StepDescription::run
             at bootstrap/builder.rs:234
  15: bootstrap::builder::Builder::run_step_descriptions
             at bootstrap/builder.rs:571
  16: bootstrap::builder::Builder::get_step_descriptions
             at bootstrap/builder.rs:561
  17: bootstrap::Crate::local_path
             at bootstrap/lib.rs:479
  18: bootstrap::main
             at bootstrap/bin/main.rs:29
  19: std::rt::lang_start::{{closure}}
             at libstd/rt.rs:74
  20: std::panicking::try::do_call
             at libstd/rt.rs:59
             at libstd/panicking.rs:310
  21: panic_unwind::dwarf::eh::read_encoded_pointer
             at libpanic_unwind/lib.rs:102
  22: std::alloc::default_alloc_error_hook
             at libstd/panicking.rs:289
             at libstd/panic.rs:392
             at libstd/rt.rs:58
  23: std::rt::lang_start
             at libstd/rt.rs:74
  24: bootstrap::main
failed to run: /Users/alex/Software/rust-devel/build/bootstrap/debug/bootstrap build -i libstd