[perf] Consider param-env for fast path

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[compiler-errors]

@bors2 try @rust-timer queue

[rust-timer]

Awaiting bors try build completion.

@rustbot label: +S-waiting-on-perf

[rust-bors]

⌛ Trying commit 089656e with merge 7c68135…

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[rust-log-analyzer]

The job aarch64-gnu-llvm-19-1 failed! Check out the build log: (web) (plain enhanced) (plain)

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

failures:

---- [ui] tests/ui/where-clauses/ignore-err-clauses.rs stdout ----

error: 1 unexpected diagnostics reported, 1 expected diagnostics not reported
--- reported in JSON output but not expected in test file ---
tests/ui/where-clauses/ignore-err-clauses.rs:10:9: ERROR: use of moved value: `x` [E0382]
---
--- expected in test file but not reported in JSON output ---
tests/ui/where-clauses/ignore-err-clauses.rs:3:1: ERROR: type annotations needed
  reported with kind NOTE with message move occurs because `x` has type `T`, which does not implement the `Copy` trait
  reported with kind HELP with message if `T` implemented `Clone`, you could clone the value
  reported with kind NOTE with message consider constraining this type parameter with `Clone`
---

thread '[ui] tests/ui/where-clauses/ignore-err-clauses.rs' panicked at src/tools/compiletest/src/runtest.rs:884:13:
errors differ from expected
status: exit status: 1
command: env -u RUSTC_LOG_COLOR RUSTC_ICE="0" RUST_BACKTRACE="short" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" "/checkout/tests/ui/where-clauses/ignore-err-clauses.rs" "-Zthreads=1" "-Zsimulate-remapped-rust-src-base=/rustc/FAKE_PREFIX" "-Ztranslate-remapped-path-to-local-path=no" "-Z" "ignore-directory-in-diagnostics-source-blocks=/cargo" "-Z" "ignore-directory-in-diagnostics-source-blocks=/checkout/vendor" "--sysroot" "/checkout/obj/build/aarch64-unknown-linux-gnu/stage2" "--target=aarch64-unknown-linux-gnu" "--check-cfg" "cfg(test,FALSE)" "--error-format" "json" "--json" "future-incompat" "-Ccodegen-units=1" "-Zui-testing" "-Zdeduplicate-diagnostics=no" "-Zwrite-long-types-to-disk=no" "-Cstrip=debuginfo" "--emit" "metadata" "-C" "prefer-dynamic" "--out-dir" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/where-clauses/ignore-err-clauses" "-A" "unused" "-A" "internal_features" "-Crpath" "-Cdebuginfo=0" "-Lnative=/checkout/obj/build/aarch64-unknown-linux-gnu/native/rust-test-helpers"



failures:
    [ui] tests/ui/where-clauses/ignore-err-clauses.rs

[rust-bors]

☀️ Try build successful (CI)
Build commit: 7c68135 (7c68135aa7729b5e1a168883c992b097f120c51a, parent: 085c24790e591948f788fd294ca3f9858313741c)

[rust-timer]

Queued 7c68135 with parent 085c247, future comparison URL.
There are currently 5 preceding artifacts in the queue.
It will probably take at least ~5.2 hours until the benchmark run finishes.