Do not trust bootstrap about git hash availability

[jieyouxu]

Since the bootstrap implementation can contain bugs. See #132845 and #132875.

Instead, we use RUSTC_TEST_GIT_HASH env var that is directly set by CI, or by the user locally, to control when the tests/run-make/version-verbose-commit-hash gets run. Note that locally, setting RUSTC_TEST_GIT_HASH=1 only forces the test to run; the test will only pass if git hash is available, i.e. explicitly opt-in, or using a non-dev channel.

Fixes #132875.

r? ghost

try-job: aarch64-apple
try-job: test-various

[jieyouxu]

@bors try

[rust-log-analyzer]

The job pr-check-2 failed! Check out the build log: (web) (plain enhanced) (plain)

Click to see the possible cause of the failure (guessed by this bot)

note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
---- directives::tests::git_hash stdout end ----
---- directives::tests::families stdout ----

thread 'directives::tests::families' (181636) panicked at src/tools/compiletest/src/lib.rs:376:14:
`RUSTC_TEST_GIT_HASH` must be set under CI environments
stack backtrace:
   0: __rustc::rust_begin_unwind
             at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:698:5
   1: core::panicking::panic_fmt
             at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:80:14
---
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
---- directives::tests::ignore_arch stdout end ----
---- directives::tests::asm_support stdout ----

thread 'directives::tests::asm_support' (181574) panicked at src/tools/compiletest/src/lib.rs:376:14:
`RUSTC_TEST_GIT_HASH` must be set under CI environments
stack backtrace:
   0: __rustc::rust_begin_unwind
             at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:698:5
   1: core::panicking::panic_fmt
             at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:80:14
---
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
---- directives::tests::ignore_target stdout end ----
---- directives::tests::ignore_coverage stdout ----

thread 'directives::tests::ignore_coverage' (181719) panicked at src/tools/compiletest/src/lib.rs:376:14:
`RUSTC_TEST_GIT_HASH` must be set under CI environments
stack backtrace:
   0: __rustc::rust_begin_unwind
             at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:698:5
   1: core::panicking::panic_fmt
             at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:80:14
---
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
---- directives::tests::llvm_version stdout end ----
---- directives::tests::is_big_endian stdout ----

thread 'directives::tests::is_big_endian' (181721) panicked at src/tools/compiletest/src/lib.rs:376:14:
`RUSTC_TEST_GIT_HASH` must be set under CI environments
stack backtrace:
   0: __rustc::rust_begin_unwind
             at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:698:5
   1: core::panicking::panic_fmt
             at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:80:14
---
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
---- directives::tests::is_big_endian stdout end ----
---- directives::tests::matches_os stdout ----

thread 'directives::tests::matches_os' (181751) panicked at src/tools/compiletest/src/lib.rs:376:14:
`RUSTC_TEST_GIT_HASH` must be set under CI environments
stack backtrace:
   0: __rustc::rust_begin_unwind
             at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:698:5
   1: core::panicking::panic_fmt
             at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:80:14
---
note: Some details are omitted, run with `RUST_BACKTRACE=full` for a verbose backtrace.
---- directives::tests::matches_os stdout end ----
---- directives::tests::matches_env stdout ----

thread 'directives::tests::matches_env' (181748) panicked at src/tools/compiletest/src/lib.rs:376:14:
`RUSTC_TEST_GIT_HASH` must be set under CI environments
stack backtrace:
   0: __rustc::rust_begin_unwind
             at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/std/src/panicking.rs:698:5
   1: core::panicking::panic_fmt
             at /rustc/3b4dd9bf1410f8da6329baa36ce5e37673cbbd1f/library/core/src/panicking.rs:80:14

[rust-bors]

☀️ Try build successful (CI)
Build commit: 8523b25 (8523b250b8a0af9b70f36e2f1a9bfc84176e5e43, parent: 7b9905edb4df3aeaabd0d6cd0d4c09b183d7d965)