Fix ICE with main's return type containing lifetimes

[sinkuu]

Fixes#48890

[TimNN]

Your PR failed on Travis. 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.

Resolving deltas: 100% (611607/611607), completed with 4865 local objects.
---
curl: (56) SSL read: error:00000000:lib(0):func(0):reason(0), errno 104
The command "curl -fo /home/travis/stamp https://s3-us-west-1.amazonaws.com/rust-lang-ci2/rust-ci-mirror/2017-03-17-stamp-x86_64-unknown-linux-musl" failed. Retrying, 2 of 3.
---
[00:01:57] configure: rust.quiet-tests := True
---
[00:44:34] ..........................................................................i.........................
[00:44:40] .................i..................................................................................
---
[00:45:17] ..............................................................................................i.....
[00:45:24] ...................................................................i................................
---
[00:46:20] .............................................i......................................................
---
[00:50:24] .............................i......................................................................
[00:50:40] ..............................................................i.....................................
[00:50:56] ...............................................i....................................................
[00:51:17] ....................................................................................................
[00:51:40] ....................................................................................................
[00:52:03] ....................................................................................................
[00:52:28] .i...............................................................................................i..
[00:52:54] ...........................................................................test [run-pass] run-pass/mir_heavy_promoted.rs has been running for over 60 seconds
[00:53:07] .........................
[00:53:39] ....................................................................................................
[00:54:16] ...............................................................ii...................................
[00:55:01] ..........................i....................................................itest [run-pass] run-pass/saturating-float-casts.rs has been running for over 60 seconds
[00:55:10] .ii.................
[00:55:53] .......................................................................................iiiiiii......
---
[00:58:13] ..................i............................................................ii.iii...............
[00:58:21] ....................................................................................................
[00:58:29] ........i..............................i............................................................
[00:58:37] ....................................................................................................
[00:58:44] ....................i...............................................................................
[00:58:52] ....................................................................................................
[00:59:02] ....................................................................................................
[00:59:13] ....................................................................................................
[00:59:24] ....................................................................................................
[00:59:39] ....................................................................................................
[00:59:47] .............i......................................................................................
[00:59:57] ................i..ii...............................................................................
[01:00:07] ....................................................................................................
[01:00:18] ....................................................................................................
[01:00:28] ..................................................................................i.................
[01:00:39] ............................i.......................................................................
---
[01:01:17] ...........................i........................................................................
[01:01:18] ....................................................................i...............................
[01:01:19] ................i.......................................................
---
[01:01:35] .............iF.......................
[01:01:35] failures:
[01:01:35] thread 'main' panicked at 'Some tests failed', tools/compiletest/src/main.rs:478:22
[01:01:35]
[01:01:35] ---- [run-fail] run-fail/rfc-1937-termination-trait/termination-trait-for-str.rs stdout ----
[01:01:35]
[01:01:35] error: Error: expected failure status (Some(101)) but received status Some(1).
---
[01:01:35] Error: "An error message for you"
[01:01:35]
[01:01:35] ------------------------------------------
[01:01:35]
[01:01:35] thread '[run-fail] run-fail/rfc-1937-termination-trait/termination-trait-for-str.rs' panicked at 'explicit panic', tools/compiletest/src/runtest.rs:2901:9
---
[01:01:35] command did not execute successfully: "/checkout/obj/build/x86_64-unknown-linux-gnu/stage0-tools-bin/compiletest" "--compile-lib-path" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/lib" "--run-lib-path" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/lib/rustlib/x86_64-unknown-linux-gnu/lib" "--rustc-path" "/checkout/obj/build/x86_64-unknown-linux-gnu/stage2/bin/rustc" "--src-base" "/checkout/src/test/run-fail" "--build-base" "/checkout/obj/build/x86_64-unknown-linux-gnu/test/run-fail" "--stage-id" "stage2-x86_64-unknown-linux-gnu" "--mode" "run-fail" "--target" "x86_64-unknown-linux-gnu" "--host" "x86_64-unknown-linux-gnu" "--llvm-filecheck" "/usr/lib/llvm-3.9/bin/FileCheck" "--host-rustcflags" "-Crpath -O -Zmiri -Zunstable-options " "--target-rustcflags" "-Crpath -O -Zmiri -Zunstable-options -Lnative=/checkout/obj/build/x86_64-unknown-linux-gnu/native/rust-test-helpers" "--docck-python" "/usr/bin/python2.7" "--lldb-python" "/usr/bin/python2.7" "--gdb" "/usr/bin/gdb" "--quiet" "--llvm-version" "3.9.1\n" "--system-llvm" "--cc" "" "--cxx" "" "--cflags" "" "--llvm-components" "" "--llvm-cxxflags" "" "--adb-path" "adb" "--adb-test-dir" "/data/tmp/work" "--android-cross-path" "" "--color" "always"
[01:01:35] expected success, got: exit code: 101
[01:01:35]
[01:01:35]
[01:01:35] failed to run: /checkout/obj/build/bootstrap/debug/bootstrap test
[01:01:35] Build completed unsuccessfully in 0:18:19
[01:01:35] Makefile:58: recipe for target 'check' failed
[01:01:35] make: *** [check] Error 1
---
$ dmesg | grep -i kill
[ 11.393158] init: failsafe main process (1093) killed by TERM signal

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.

[nikomatsakis]

@sinkuu nice! Looks like you need a // failure-status: 1 comment in the tests.

[arielb1]

@bors r+

[bors]

📌 Commit 40a1ee8 has been approved by arielb1

[arielb1]

Nice set of tests!

[arielb1]

@bors p=1

This is a beta-nominated PR

[bors]

⌛ Testing commit 40a1ee8 with merge 8228d8e...

[bors]

☀️ Test successful - status-appveyor, status-travis
Approved by: arielb1
Pushing 8228d8e to master...

[scottmcm]

This was beta-nominated; what needs to happen for a beta merge?

[alexcrichton]

@scottmcm this was waiting for beta-accepted which I've now applied, so should be good to go!

(gonna review a few more and then do a lot of backports at once)