Toolstate for Linux not correctly published

[RalfJung]

The toolstate for Linux at https://rust-lang-nursery.github.io/rust-toolstate/ claims that tools are still failing. E.g., #63141 landed, but only the Windows toolstate was considered fixed after that.

Looks like something is breaking publishing Linux toolstate?

Cc @pietroalbini @kennytm

[pietroalbini]

Apparently the publish environment variable is not properly propagated to the Linux builder...

[RalfJung]

The build log for that Miri PR shows the right JSON:

{"nomicon":"test-pass","rls":"test-pass","embedded-book":"test-pass",
"edition-guide":"test-pass","rustbook":"test-fail","clippy-driver":"test-pass",
"miri":"test-pass","reference":"test-pass","book":"test-pass",
"rust-by-example":"test-pass","rustfmt":"test-pass"}

I cannot see an error message anywhere.