Can't build on macos with dotnet core 3.1.3

Trying to build the client with dotnet 3.1.3 on mac and running into

Core/Logging/LogRedactionTests.cs(20,13): warning xUnit2003: Do not use Assert.Equal() to check for null value. [/Users/charlesdixon/dev/couchbase-net-client/tests/Couchbase.UnitTests/Couchbase.UnitTests.csproj]
DataStructures/PersistentDictionary.cs(107,21): error CS8767: Nullability of reference types in type of parameter 'value' of 'bool PersistentDictionary<TValue>.TryGetValue(string key, out TValue value)' doesn't match implicitly implemented member 'bool IDictionary<string, TValue>.TryGetValue(string key, out TValue value)' (possibly because of nullability attributes). [/Users/charlesdixon/dev/couchbase-net-client/src/Couchbase/Couchbase.csproj]
DataStructures/PersistentDictionary.cs(107,21): error CS8767: Nullability of reference types in type of parameter 'value' of 'bool PersistentDictionary<TValue>.TryGetValue(string key, out TValue value)' doesn't match implicitly implemented member 'bool IDictionary<string, TValue>.TryGetValue(string key, out TValue value)' (possibly because of nullability attributes). [/Users/charlesdixon/dev/couchbase-net-client/src/Couchbase/Couchbase.csproj]
DataStructures/PersistentDictionary.cs(107,21): error CS8767: Nullability of reference types in type of parameter 'value' of 'bool PersistentDictionary<TValue>.TryGetValue(string key, out TValue value)' doesn't match implicitly implemented member 'bool IDictionary<string, TValue>.TryGetValue(string key, out TValue value)' (possibly because of nullability attributes). [/Users/charlesdixon/dev/couchbase-net-client/src/Couchbase/Couchbase.csproj]
{{ 1 Warning(s)}}
{{ 3 Error(s)}}