Formatting script can't install tools properly

[sea212]

Relevant code:

zeitgeist/scripts/tests/format.sh

Lines 65 to 74 in 68cd162

	# install taplo if it isn't already
	has_taplo=$(whereis taplo)
	if [[ ${has_taplo} = "taplo: " ]]; then
	cargo install taplo-cli 2>/dev/null
	fi
	# install rustfmt if it isn't already
	has_rustfmt=$(whereis rustfmt)
	if [[ ${has_rustfmt} = "rustfmt: " ]]; then
	rustup component add rustfmt
	fi

Issues:

1. On Ubuntu, whereis returns an empty string if the binary is not found
2. Compiling using the default nightly toolchain results in errors:

Expand error log

error[E0658]: `const extern fn` definitions are unstable
    --> /home/sea212/.cargo/registry/src/github.com-1ecc6299db9ec823/libc-0.2.132/src/macros.rs:188:17
     |
188  | /                 pub $($constness)* unsafe extern fn $i($($arg: $argty),*
189  | |                 ) -> $ret {
190  | |                     $($body);*
191  | |                 }
     | |_________________^
     |
    ::: /home/sea212/.cargo/registry/src/github.com-1ecc6299db9ec823/libc-0.2.132/src/unix/linux_like/mod.rs:1499:1
     |
1499 | / f! {
1500 | |     pub fn CMSG_FIRSTHDR(mhdr: *const msghdr) -> *mut cmsghdr {
1501 | |         if (*mhdr).msg_controllen as usize >= ::mem::size_of::() {
1502 | |             (*mhdr).msg_control as *mut cmsghdr
...    |
1545 | |     }
1546 | | }
     | |_- in this macro invocation
     |
     = note: see issue #64926  for more information
     = help: add `#![feature(const_extern_fn)]` to the crate attributes to enable
     = note: this error originates in the macro `f` (in Nightly builds, run with -Z macro-backtrace for more info)
error[E0658]: const extern fn definitions are unstable

--> /home/sea212/.cargo/registry/src/github.com-1ecc6299db9ec823/libc-0.2.132/src/macros.rs:203:17

|

203  | /                 pub $($constness)* extern fn $i($($arg: $argty),*

204  | |                 ) -> $ret {

205  | |                     $($body);*

206  | |                 }

| |_________________^

|

::: /home/sea212/.cargo/registry/src/github.com-1ecc6299db9ec823/libc-0.2.132/src/unix/linux_like/mod.rs:1548:1

|

1548 | / safe_f! {

1549 | |     pub fn SIGRTMAX() -> ::c_int {

1550 | |         unsafe { __libc_current_sigrtmax() }

1551 | |     }

...    |

1615 | |     }

1616 | | }

| |_- in this macro invocation

|

= note: see issue #64926 https://github.com/rust-lang/rust/issues/64926 for more information

= help: add #![feature(const_extern_fn)] to the crate attributes to enable

= note: this error originates in the macro safe_f (in Nightly builds, run with -Z macro-backtrace for more info)
For more information about this error, try rustc --explain E0658.

error: could not compile libc due to 2 previous errors

warning: build failed, waiting for other jobs to finish...

error: failed to compile taplo-cli v0.6.10, intermediate artifacts can be found at /tmp/cargo-installJw73Ta

[vivekvpandya]

Yes default nightly version should be based on rust 1.62. See jyao1/rust-spdm#260 (similar issue)
I could not found taplo's version which installs fine with nightly tool chain which is older than 1.62.