test: fix backtrace display

between 5 Feb 2024 and 13 Feb 2024 backtrace began activiating in
`nix-shell` and ci during integration tests when rexpect.
this caused some error tests to fail / hang

it was not activating in the `nix-shell` when the cli
was called seperately

setting the `RUST_BACKTRACE=0` in the rexpect config surpresses
the backtrace as desired

1 files changed, 2 insertions, 0 deletions

diff --git a/test_utils/src/lib.rs b/test_utils/src/lib.rs
index 8128e98..0e34983 100644
--- a/test_utils/src/lib.rs
+++ b/test_utils/src/lib.rs
@@ -770,6 +770,7 @@ where
 {
     let mut cmd = std::process::Command::new(assert_cmd::cargo::cargo_bin("ngit"));
     cmd.env("NGITTEST", "TRUE");
+    cmd.env("RUST_BACKTRACE", "0");
     cmd.args(args);
     // using branch for PR https://github.com/rust-cli/rexpect/pull/103 to strip ansi escape codes
     rexpect::session::spawn_with_options(
@@ -792,6 +793,7 @@ where
 {
     let mut cmd = std::process::Command::new(assert_cmd::cargo::cargo_bin("ngit"));
     cmd.env("NGITTEST", "TRUE");
+    cmd.env("RUST_BACKTRACE", "0");
     cmd.current_dir(dir);
     cmd.args(args);
     // using branch for PR https://github.com/rust-cli/rexpect/pull/103 to strip ansi escape codes