test: Use a larger default term width (#16403)

@ehuss [made a
comment](#16391 (comment))
saying that `cargo` should set `__CARGO_TEST_TTY_WIDTH_DO_NOT_USE_THIS
to a very large value to avoid problems with long paths in tests. This
PR does that by setting it to `200` (the previous default was `140`).

Note: `200` is a start, and we can always go up if needed

Author: epage

crates/cargo-test-support/src/lib.rs

@@ -1423,6 +1423,7 @@ pub trait TestEnvCommandExt: Sized {
             .env("__CARGO_TEST_DISABLE_GLOBAL_KNOWN_HOST", "1")
             // Set retry sleep to 1 millisecond.
             .env("__CARGO_TEST_FIXED_RETRY_SLEEP_MS", "1")
+            .env("__CARGO_TEST_TTY_WIDTH_DO_NOT_USE_THIS", "200")
             // Incremental generates a huge amount of data per test, which we
             // don't particularly need. Tests that specifically need to check
             // the incremental behavior should turn this back on.

tests/testsuite/lints/implicit_minimum_version_req.rs

@@ -717,8 +717,8 @@ implicit_minimum_version_req = "warn"
 [WARNING] dependency version requirement without an explicit minimum version
  --> Cargo.toml:7:[..]
   |
-7 | [..]/bar', version = "0.1" }
-  |                  [..]^^^^^ missing full version components
+7 | bar = { git = '[ROOTURL]/bar', version = "0.1" }
+  |                                      [..]^^^^^ missing full version components
   |
 [HELP] consider specifying full `major.minor.patch` version components
   |