In principle, this PR extends rust-lang#108326 for RustyHermit.

Signed-off-by: Stefan Lankes <slankes@eonerc.rwth-aachen.de>

Before: `CI / PR (mingw-check, false, ubuntu-20.04-16core-64gb) (pull_request)`
After: `CI / PR - mingw-check (pull_request)`

For multi-invocation builders (e.g., dist-x86_64-linux) this timestamp
is necessary to correlate the data in the metrics JSON with other data
sources (e.g., logs, cpu-usage CSV, etc.). Such correlation may not be
perfect but is sometimes helpful and awkward to do otherwise.

to avoid going over the existing limit now that the ui-fulldeps tests have
been moved to ui.

LIBPATH is used as dylib's path environment variable on AIX

See https://4js.com/online_documentation/fjs-fgl-3.00.05-manual-html/c_fgl_installation_017.html.

…racts_confusingly_with_paths, r=Mark-Simulacrum

check for missing codegen backeng config

Fixes [rust-lang#109610](rust-lang#109610)

Implement read_buf for RustHermit

In principle, this PR extends rust-lang#108326 for RustyHermit.

…er-errors

fix(middle): emit error rather than delay bug when reaching limit

close rust-lang#109304

Improve PR job names in Github Actions preview

Fixes https://rust-lang.zulipchat.com/#narrow/stream/242791-t-infra/topic/PR.20CI.20job.20names.

Before: `CI / PR (mingw-check, false, ubuntu-20.04-16core-64gb) (pull_request)`
After:  `CI / PR - mingw-check (pull_request)`

r? ``@jyn514``

… r=ozkanonur

Include invocation start times

For multi-invocation builders (e.g., dist-x86_64-linux) this timestamp is necessary to correlate the data in the metrics JSON with other data sources (e.g., logs, cpu-usage CSV, etc.). Such correlation may not be perfect but is sometimes helpful and awkward to do otherwise.

…errors

Move some UI tests into subdirectories