std doesn't compile for riscv32gc-unknown-linux-gnu #164694

error[E0425]: cannot find value `SYS_futex` in crate `libc`
   --> /home/newpavlov/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/sys/sync/futex/unix.rs:64:31
    |
 64 |                         libc::SYS_futex,
    |                               ^^^^^^^^^ not found in `libc`
    |
note: similarly named constant `SYS_fstat` defined here
   --> /home/newpavlov/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/libc-0.2.191/src/unix/linux_like/linux/gnu/b32/riscv32/mod.rs:446:1
    |
446 | pub const SYS_fstat: c_long = 80;
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
help: a constant with a similar name exists
    |
 64 -                         libc::SYS_futex,
 64 +                         libc::SYS_fstat,
    |

error[E0425]: cannot find value `SYS_futex` in crate `libc`
   --> /home/newpavlov/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/sys/sync/futex/unix.rs:97:34
    |
 97 |     unsafe { libc::syscall(libc::SYS_futex, ptr, op, 1) > 0 }
    |                                  ^^^^^^^^^ not found in `libc`
    |
note: similarly named constant `SYS_fstat` defined here
   --> /home/newpavlov/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/libc-0.2.191/src/unix/linux_like/linux/gnu/b32/riscv32/mod.rs:446:1
    |
446 | pub const SYS_fstat: c_long = 80;
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
help: a constant with a similar name exists
    |
 97 -     unsafe { libc::syscall(libc::SYS_futex, ptr, op, 1) > 0 }
 97 +     unsafe { libc::syscall(libc::SYS_fstat, ptr, op, 1) > 0 }
    |

error[E0425]: cannot find value `SYS_futex` in crate `libc`
   --> /home/newpavlov/.rustup/toolchains/nightly-x86_64-unknown-linux-gnu/lib/rustlib/src/rust/library/std/src/sys/sync/futex/unix.rs:106:29
    |
106 |         libc::syscall(libc::SYS_futex, ptr, op, i32::MAX);
    |                             ^^^^^^^^^ not found in `libc`
    |
note: similarly named constant `SYS_fstat` defined here
   --> /home/newpavlov/.cargo/registry/src/index.crates.io-1949cf8c6b5b557f/libc-0.2.191/src/unix/linux_like/linux/gnu/b32/riscv32/mod.rs:446:1
    |
446 | pub const SYS_fstat: c_long = 80;
    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
help: a constant with a similar name exists
    |
106 -         libc::syscall(libc::SYS_futex, ptr, op, i32::MAX);
106 +         libc::syscall(libc::SYS_fstat, ptr, op, i32::MAX);
    |