[Bug] stdlib/nursery tests fail to run

[brson]

We pass the normal stdlib tests on rbpf. The stdlib also contains a "nursery" that is a separate project, and for which the tests fail to run at all.

$ MOVE_NATIVE=$(pwd)/language/move-native cargo run -p move-cli --features solana-backend -- test -p language/move-stdlib/nursery --arch solana --solana
    Finished dev [unoptimized + debuginfo] target(s) in 0.44s
     Running `target/debug/move test -p language/move-stdlib/nursery --arch solana --solana`
INCLUDING DEPENDENCY MoveStdlib
BUILDING MoveNursery
Running Move unit tests
thread '<unnamed>' panicked at 'Move model has errors', /home/azureuser/data/solana/move/language/tools/move-unit-test/src/test_runner.rs:853:13
note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace
thread '<unnamed>' panicked at 'Move model has errors', /home/azureuser/data/solana/move/language/tools/move-unit-test/src/test_runner.rs:853:13
thread '<unnamed>' panicked at 'Move model has errors', /home/azureuser/data/solana/move/language/tools/move-unit-test/src/test_runner.rs:853:13
thread '<unnamed>' panicked at 'Move model has errors', /home/azureuser/data/solana/move/language/tools/move-unit-test/src/test_runner.rs:853:13
thread '<unnamed>' panicked at 'Move model has errors', /home/azureuser/data/solana/move/language/tools/move-unit-test/src/test_runner.rs:853:13