fancy-garbling test failures

[YANCC139]

When I run the fancy-carbling test without cargo test, the following error occurs：

failures:

---- parser::tests::test_gc_eval stdout ----
thread 'parser::tests::test_gc_eval' panicked at 'called Result::unwrap() on an Err value: IoError(Os { code: 2, kind: NotFound, message: "No such file or directory" })', fancy-garbling/src/parser.rs:209:72
note: run with RUST_BACKTRACE=1 environment variable to display a backtrace

---- parser::tests::test_parser stdout ----
thread 'parser::tests::test_parser' panicked at 'called Result::unwrap() on an Err value: IoError(Os { code: 2, kind: NotFound, message: "No such file or directory" })', fancy-garbling/src/parser.rs:180:68

---- twopac::semihonest::tests::test_aes stdout ----
thread 'twopac::semihonest::tests::test_aes' panicked at 'called Result::unwrap() on an Err value: IoError(Os { code: 2, kind: NotFound, message: "No such file or directory" })', fancy-garbling/src/twopac/semihonest/mod.rs:110:68