test fails with rustc 1.35

[vcunat]

Did rustc output add a newline?

Reproducing the behavior

Nothing special, I think. Just run tests:

test test_run_programs ... FAILED
test test_run_examples ... ok

failures:

---- test_run_programs stdout ----
testing "/build/hvm-2.0.22.tar.gz/tests/programs/empty.hvm"...
━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ Snapshot Summary ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
Snapshot file: tests/snapshots/run__file@empty.hvm.snap
Snapshot: file@empty.hvm
Source: tests/run.rs:46
Input file: tests/programs/empty.hvm
────────────────────────────────────────────────────────────────────────────────
Expression: rust_output
────────────────────────────────────────────────────────────────────────────────
-old snapshot
+new results
────────────┬───────────────────────────────────────────────────────────────────
    0     0 │ exit status: 101
          1 │+
    1     2 │ thread 'main' panicked at src/ast.rs:545:41:
    2     3 │ missing `@main` definition
    3     4 │ note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
────────────┴───────────────────────────────────────────────────────────────────
snapshot assertion from glob for 'file@empty.hvm' failed in line 46

System Settings

• OS: NixOS