Function set 

pub fn set(
    path: &Path,
    key: &str,
    environment: &str,
    value: &str,
) -> Result<(), SecretError>

Stores value under key for environment, replacing any previous value in that slot and leaving every other environment alone.

Errors

• SecretError::InvalidKey: the key is outside the grammar.
• SecretError::InvalidEnvironment: the environment name is outside the grammar.
• SecretError::ValueTooLong: the value exceeds MAX_VALUE_BYTES.
• SecretError::FutureVersion: the store on disk is newer than this build understands. Nothing is written.
• SecretError::Decode: the existing file could not be parsed.
• SecretError::Io: the lock, the temp file, the fsync or the rename failed.