error[E0658]: use of unstable library feature 'duration_checked_float'

[ju1m]

Hi, thanks for this software! I'm trying to compile v0.7.3 on NixOS, using rustc 1.64.0, but I'm hitting E0658:

$ nix -L build
++ env CC_x86_64-unknown-linux-gnu=/nix/store/9yxrwp848f7msm6m2442yfpji8m3206b-gcc-wrapper-11.3.0/bin/cc CXX_x86_64-unknown-linux-gnu=/nix/store/9yxrwp848f7msm6m2442yfpji8m3206b-gcc-wrapper-11.3.0/bin/c++ CC_x86>
   Compiling libc v0.2.139
   Compiling autocfg v1.1.0
   Compiling proc-macro2 v1.0.51
   Compiling unicode-ident v1.0.6
   Compiling quote v1.0.23
   Compiling syn v1.0.107
   Compiling cfg-if v1.0.0
   Compiling version_check v0.9.4
   Compiling futures-core v0.3.26
   Compiling memchr v2.5.0
   Compiling log v0.4.17
   Compiling typenum v1.16.0
   Compiling pin-project-lite v0.2.9
   Compiling io-lifetimes v1.0.5
   Compiling rustix v0.36.8
   Compiling futures-task v0.3.26
   Compiling futures-sink v0.3.26
   Compiling futures-channel v0.3.26
   Compiling bitflags v1.3.2
   Compiling futures-util v0.3.26
   Compiling linux-raw-sys v0.1.4
   Compiling serde_derive v1.0.152
   Compiling crossbeam-utils v0.8.14
   Compiling bytes v1.4.0
   Compiling futures-io v0.3.26
   Compiling scopeguard v1.1.0
   Compiling parking_lot_core v0.8.6
   Compiling pin-utils v0.1.0
   Compiling serde v1.0.152
   Compiling heck v0.4.1
   Compiling serde_json v1.0.93
   Compiling portable-atomic v0.3.19
   Compiling smallvec v1.10.0
   Compiling cc v1.0.79
   Compiling crc32fast v1.3.2
   Compiling os_str_bytes v6.4.1
   Compiling anyhow v1.0.69
   Compiling itoa v1.0.5
   Compiling termcolor v1.2.0
   Compiling once_cell v1.17.1
   Compiling time-core v0.1.0
   Compiling byteorder v1.4.3
   Compiling subtle v2.4.1
   Compiling ppv-lite86 v0.2.17
   Compiling strsim v0.10.0
   Compiling ryu v1.0.12
   Compiling lazy_static v1.4.0
   Compiling unicode-width v0.1.10
   Compiling number_prefix v0.4.0
   Compiling arrayref v0.3.6
   Compiling arrayvec v0.7.2
   Compiling constant_time_eq v0.2.4
   Compiling infer v0.12.0
   Compiling humantime v2.1.0
   Compiling shell-escape v0.1.5
   Compiling slab v0.4.7
   Compiling tokio v1.25.0
   Compiling lock_api v0.4.9
   Compiling memoffset v0.7.1
   Compiling crossbeam-epoch v0.9.13
   Compiling instant v0.1.12
   Compiling generic-array v0.14.6
   Compiling proc-macro-error-attr v1.0.4
   Compiling proc-macro-error v1.0.4
   Compiling clap_lex v0.3.1
   Compiling blake3 v1.3.3
   Compiling time-macros v0.2.7
   Compiling fxhash v0.2.1
   Compiling signal-hook-registry v1.4.1
   Compiling num_cpus v1.15.0
   Compiling getrandom v0.2.8
   Compiling console v0.15.5
   Compiling errno v0.2.8
   Compiling fs2 v0.4.3
   Compiling dirs-sys v0.3.7
   Compiling atty v0.2.14
   Compiling time v0.3.19
   Compiling mio v0.8.6
   Compiling rand_core v0.6.4
   Compiling parking_lot v0.11.2
   Compiling unix-named-pipe v0.2.0
   Compiling indicatif v0.17.3
   Compiling dirs v4.0.0
   Compiling crypto-common v0.1.6
   Compiling block-buffer v0.10.3
   Compiling terminal_size v0.2.5
   Compiling is-terminal v0.4.3
   Compiling rand_chacha v0.3.1
   Compiling sled v0.34.7
   Compiling digest v0.10.6
   Compiling rand v0.8.5
   Compiling tokio-macros v1.8.2
   Compiling futures-macro v0.3.26
   Compiling clap_derive v4.1.0
   Compiling clap v4.1.6
   Compiling tokio-util v0.7.7
   Compiling tokio-stream v0.1.11
   Compiling futures-executor v0.3.26
   Compiling futures v0.3.26
   Compiling clap_complete v4.1.2
   Compiling ffprobe v0.3.3
   Compiling tokio-process-stream v0.3.0
   Compiling ab-av1 v0.7.3 (/build/source)
error[E0658]: use of unstable library feature 'duration_checked_float'
   --> src/ffprobe.rs:114:13
    |
114 |             Duration::try_from_secs_f64(duration_f)
    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^
    |
    = note: see issue #83400 <https://github.com/rust-lang/rust/issues/83400> for more information

For more information about this error, try `rustc --explain E0658`.
error: could not compile `ab-av1` due to previous error

Here's the default.nix I'm using:

{ lib, fetchFromGitHub, rustPlatform }:

rustPlatform.buildRustPackage rec {
  pname = "ab-av1";
  version = "0.7.3";

  src = fetchFromGitHub {
    owner = "alexheretic";
    repo = pname;
    rev = "v${version}";
    hash = "sha256-DbZ5ZyhFFINfFMwz4tjUp6hurSY0HQeujo3ejm2gIN4=";
  };

  cargoHash = "sha256-WossT3iASNQnk0GGd0xs6KcGiJ4bKEJX8UVaYvKDuNs=";

  meta = with lib; {
    description = "AV1 re-encoding using ffmpeg, svt-av1 & vmaf";
    homepage = "https://github.com/alexheretic/ab-av1";
    license = licenses.mit;
    maintainers = [ maintainers.julm ];
  };
}

[ju1m]

Ah, I'm using a rustc too old rust-lang/rust#102271
Sorry for the noise.

[alexheretic]

Yep best to use the latest stable compiler for a new release, see https://github.com/alexheretic/ab-av1#minimum-supported-rust-compiler