cross should be built on ubuntu 18.04 (fails with `version `GLIBC_2.29' not found`)

[sylvestre]

Description

reported initially here:
uutils/coreutils#3210

Using use-cross on an Ubuntu 18.04 fails with:

/home/runner/.cargo/bin/cross build --release --target=x86_64-unknown-linux-musl --features feat_os_unix_musl
/home/runner/.cargo/bin/cross: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.29' not found (required by /home/runner/.cargo/bin/cross)
/home/runner/.cargo/bin/cross: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.28' not found (required by /home/runner/.cargo/bin/cross)

Seems that bin/cross is built on more recent ubuntu.

Workflow code

with:
  use-cross: true
  command: build
  args: --release --target=i686-unknown-linux-gnu  --features "feat_os_unix"

Action output

Full log
https://pipelines.actions.githubusercontent.com/Tv5Yv5nIzIhWaMo3xdKzjIorSSIlfCwnxr6L52Y7lKBOTZPJ76/_apis/pipelines/1/runs/11115/signedlogcontent/108?urlExpires=2022-03-04T09%3A13%3A09.6744026Z&urlSigningMethod=HMACV1&urlSignature=xSNv6KgC1Ad9w1%2BNkNhLIfRY2lnHlBJl4l0V8SHHrpA%3D

2022-03-03T23:56:20.0182827Z ##[group]Run actions-rs/cargo@v1
2022-03-03T23:56:20.0183065Z with:
2022-03-03T23:56:20.0183223Z   use-cross: true
2022-03-03T23:56:20.0183409Z   command: build
2022-03-03T23:56:20.0183676Z   args: --release --target=i686-unknown-linux-gnu  --features "feat_os_unix"
2022-03-03T23:56:20.0183926Z env:
2022-03-03T23:56:20.0184091Z   PROJECT_NAME: coreutils
2022-03-03T23:56:20.0184342Z   PROJECT_DESC: Core universal (cross-platform) utilities
2022-03-03T23:56:20.0184579Z   PROJECT_AUTH: uutils
2022-03-03T23:56:20.0184757Z   RUST_MIN_SRV: 1.54.0
2022-03-03T23:56:20.0184953Z   STYLE_FAIL_ON_FAULT: true
2022-03-03T23:56:20.0185318Z   CACHE_ON_FAILURE: false
2022-03-03T23:56:20.0185494Z   CARGO_INCREMENTAL: 0
2022-03-03T23:56:20.0185675Z ##[endgroup]
2022-03-03T23:56:20.1174653Z [command]/home/runner/.cargo/bin/cross build --release --target=i686-unknown-linux-gnu --features feat_os_unix
2022-03-03T23:56:20.1251071Z /home/runner/.cargo/bin/cross: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.29' not found (required by /home/runner/.cargo/bin/cross)
2022-03-03T23:56:20.1253486Z /home/runner/.cargo/bin/cross: /lib/x86_64-linux-gnu/libc.so.6: version `GLIBC_2.28' not found (required by /home/runner/.cargo/bin/cross)
2022-03-03T23:56:20.1293264Z ##[error]The process '/home/runner/.cargo/bin/cross' failed with exit code 1

Maybe caused by rust-lang/rust#90846 ?!

[Emilgardis]

This is caused by cross-rs/cross#724, see that issue for more information.
Dismiss that, it's not, the problem is not related to that issue, just very similar. This error comes from somewhere else, afaik, actions-rs simply does cargo install cross to install cross

note that this (actions-rs) repository and organization is unmaintained.