Avoid calling tcx.hir().get() on CRATE_HIR_ID

[Aaron1011]

This was causing an ICE when enabling trace logging for an unrelated
module, since the arguments to trace! ended up getting evaluated

[rust-highfive]

r? @matthewjasper

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[Aaron1011]

@matthewjasper: Fixed

[rust-highfive]

The job mingw-check of your PR failed (pretty log, raw log). Through arcane magic we have determined that the following fragments from the build log may contain information about the problem.

Click to expand the log.

2020-01-14T21:29:58.7735884Z ##[command]git remote add origin https://github.com/rust-lang/rust
2020-01-14T21:29:58.7821073Z ##[command]git config gc.auto 0
2020-01-14T21:29:58.7902516Z ##[command]git config --get-all http.https://github.com/rust-lang/rust.extraheader
2020-01-14T21:29:58.7959300Z ##[command]git config --get-all http.proxy
2020-01-14T21:29:58.8143184Z ##[command]git -c http.extraheader="AUTHORIZATION: basic ***" fetch --force --tags --prune --progress --no-recurse-submodules --depth=2 origin +refs/heads/*:refs/remotes/origin/* +refs/pull/68226/merge:refs/remotes/pull/68226/merge
---
2020-01-14T21:36:13.8068025Z     Checking rustc_parse v0.0.0 (/checkout/src/librustc_parse)
2020-01-14T21:36:16.2020110Z     Checking rustc_ast_passes v0.0.0 (/checkout/src/librustc_ast_passes)
2020-01-14T21:36:16.8883933Z     Checking rustc_expand v0.0.0 (/checkout/src/librustc_expand)
2020-01-14T21:36:18.4108973Z     Checking rustc_builtin_macros v0.0.0 (/checkout/src/librustc_builtin_macros)
2020-01-14T21:36:18.7799356Z error: expected one of `,`, `.`, `?`, or an operator, found `tcx`
2020-01-14T21:36:18.7802908Z     --> src/librustc/infer/opaque_types/mod.rs:1223:9
2020-01-14T21:36:18.7803479Z 1222 |         tcx.hir().find(hir_id)
2020-01-14T21:36:18.7803479Z 1222 |         tcx.hir().find(hir_id)
2020-01-14T21:36:18.7803883Z      |                               - expected one of `,`, `.`, `?`, or an operator
2020-01-14T21:36:18.7804243Z 1223 |         tcx.hir().get(opaque_hir_id),
2020-01-14T21:36:18.7804664Z 
2020-01-14T21:36:40.1433952Z error: aborting due to previous error
2020-01-14T21:36:40.1434283Z 
2020-01-14T21:36:40.1435374Z error: could not compile `rustc`.
2020-01-14T21:36:40.1435374Z error: could not compile `rustc`.
2020-01-14T21:36:40.1435600Z 
2020-01-14T21:36:40.1435813Z To learn more, run the command again with --verbose.
2020-01-14T21:36:40.1437116Z command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0/bin/cargo" "check" "-Zconfig-profile" "--target" "x86_64-unknown-linux-gnu" "-Zbinary-dep-depinfo" "-j" "2" "--release" "--color" "always" "--features" " llvm" "--manifest-path" "/checkout/src/rustc/Cargo.toml" "--message-format" "json-render-diagnostics"
2020-01-14T21:36:40.1437271Z failed to run: /checkout/obj/build/bootstrap/debug/bootstrap check
2020-01-14T21:36:40.1437449Z Build completed unsuccessfully in 0:04:21
2020-01-14T21:36:40.1437494Z == clock drift check ==
2020-01-14T21:36:40.1437537Z   local time: Tue Jan 14 21:36:38 UTC 2020
2020-01-14T21:36:40.1437537Z   local time: Tue Jan 14 21:36:38 UTC 2020
2020-01-14T21:36:40.1437599Z   network time: Tue, 14 Jan 2020 21:36:39 GMT
2020-01-14T21:36:40.1437641Z == end clock drift check ==
2020-01-14T21:36:40.1437671Z 
2020-01-14T21:36:40.1502187Z ##[error]Bash exited with code '1'.
2020-01-14T21:36:40.1530112Z ##[section]Starting: Checkout
2020-01-14T21:36:40.1532619Z ==============================================================================
2020-01-14T21:36:40.1532678Z Task         : Get sources
2020-01-14T21:36:40.1532746Z Description  : Get sources from a repository. Supports Git, TfsVC, and SVN repositories.

I'm a bot! I can only do what humans tell me to, so if this was not helpful or you have suggestions for improvements, please ping or otherwise contact @TimNN. (Feature Requests)

[matthewjasper]

@bors r+

[bors]

📌 Commit 01dc44b has been approved by matthewjasper