Constify Try, From, TryFrom and relevant traits

[Randl]

No description provided.

[rustbot]

r? @davidtwco

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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/consts/const-try.rs stdout ----

thread '[ui] tests/ui/consts/const-try.rs' panicked at src/tools/compiletest/src/runtest.rs:1463:33:
failed to exec `cd "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/consts/const-try" && LD_LIBRARY_PATH="/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/lib/rustlib/aarch64-unknown-linux-gnu/lib:/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/consts/const-try/auxiliary:/checkout/obj/build/aarch64-unknown-linux-gnu/bootstrap-tools/aarch64-unknown-linux-gnu/release/deps" RUSTC="/checkout/obj/build/aarch64-unknown-linux-gnu/stage2/bin/rustc" RUST_TEST_THREADS="4" "/checkout/obj/build/aarch64-unknown-linux-gnu/test/ui/consts/const-try/a"`: Os { code: 13, kind: PermissionDenied, message: "Permission denied" }


failures:
    [ui] tests/ui/consts/const-try.rs

[Randl]

I can reproduce the fail locally but I do not understand why it happens and how it is related to the changes.

[bors]

☔ The latest upstream changes (presumably #143888) made this pull request unmergeable. Please resolve the merge conflicts.