diff --git a/src/bin/fish_indent.rs b/src/bin/fish_indent.rs
index 87bc41b47..a013595fa 100644
--- a/src/bin/fish_indent.rs
+++ b/src/bin/fish_indent.rs
@@ -30,7 +30,7 @@
 use fish::fds::set_cloexec;
 use fish::fprintf;
 #[allow(unused_imports)]
-use fish::future::{IsOkAnd, IsSomeAnd, IsSorted};
+use fish::future::{IsSomeAnd, IsSorted};
 use fish::global_safety::RelaxedAtomicBool;
 use fish::highlight::{colorize, highlight_shell, HighlightRole, HighlightSpec};
 use fish::libc::setlinebuf;
diff --git a/src/builtins/test.rs b/src/builtins/test.rs
index e18235843..17a3f5a29 100644
--- a/src/builtins/test.rs
+++ b/src/builtins/test.rs
@@ -7,7 +7,6 @@ mod test_expressions {
     use super::*;
 
     #[allow(unused_imports)]
-    use crate::future::IsOkAnd;
     use crate::nix::isatty;
     use crate::wutil::{
         file_id_for_path, fish_wcswidth, lwstat, waccess, wcstod::wcstod, wcstoi_opts, wstat,
diff --git a/src/future.rs b/src/future.rs
index 7c0d5b609..52002038c 100644
--- a/src/future.rs
+++ b/src/future.rs
@@ -3,18 +3,10 @@
 pub trait IsSomeAnd {
     type Type;
     #[allow(clippy::wrong_self_convention)]
-    fn is_some_and(self, s: impl FnOnce(Self::Type) -> bool) -> bool;
-    #[allow(clippy::wrong_self_convention)]
     fn is_none_or(self, s: impl FnOnce(Self::Type) -> bool) -> bool;
 }
 impl<T> IsSomeAnd for Option<T> {
     type Type = T;
-    fn is_some_and(self, f: impl FnOnce(T) -> bool) -> bool {
-        match self {
-            Some(v) => f(v),
-            None => false,
-        }
-    }
     fn is_none_or(self, f: impl FnOnce(T) -> bool) -> bool {
         match self {
             Some(v) => f(v),
@@ -23,31 +15,6 @@ fn is_none_or(self, f: impl FnOnce(T) -> bool) -> bool {
     }
 }
 
-pub trait IsOkAnd {
-    type Type;
-    type Error;
-    #[allow(clippy::wrong_self_convention)]
-    fn is_ok_and(self, s: impl FnOnce(Self::Type) -> bool) -> bool;
-    #[allow(clippy::wrong_self_convention)]
-    fn is_err_and(self, s: impl FnOnce(Self::Error) -> bool) -> bool;
-}
-impl<T, E> IsOkAnd for Result<T, E> {
-    type Type = T;
-    type Error = E;
-    fn is_ok_and(self, f: impl FnOnce(T) -> bool) -> bool {
-        match self {
-            Ok(v) => f(v),
-            Err(_) => false,
-        }
-    }
-    fn is_err_and(self, f: impl FnOnce(E) -> bool) -> bool {
-        match self {
-            Ok(_) => false,
-            Err(e) => f(e),
-        }
-    }
-}
-
 pub trait IsSorted {
     type T;
     fn is_sorted_by(&self, pred: impl Fn(&Self::T, &Self::T) -> Option<std::cmp::Ordering>)
diff --git a/src/reader.rs b/src/reader.rs
index 0acf0cc4b..e3cfb6829 100644
--- a/src/reader.rs
+++ b/src/reader.rs
@@ -60,7 +60,7 @@
 use crate::fds::{make_fd_blocking, wopen_cloexec, AutoCloseFd};
 use crate::flog::{FLOG, FLOGF};
 #[allow(unused_imports)]
-use crate::future::{IsOkAnd, IsSomeAnd};
+use crate::future::IsSomeAnd;
 use crate::global_safety::RelaxedAtomicBool;
 use crate::highlight::{
     autosuggest_validate_from_history, highlight_shell, HighlightRole, HighlightSpec,