diff --git a/src/librustc/session/config.rs b/src/librustc/session/config.rs
index e58c9d75a9db2..b839980f2574e 100644
--- a/src/librustc/session/config.rs
+++ b/src/librustc/session/config.rs
@@ -1309,12 +1309,8 @@ options! {DebuggingOptions, DebuggingSetter, basic_debugging_options,
         "Disable the instrumentation pre-inliner, useful for profiling / PGO."),
     relro_level: Option<RelroLevel> = (None, parse_relro_level, [TRACKED],
         "choose which RELRO level to use"),
-    nll_subminimal_causes: bool = (false, parse_bool, [UNTRACKED],
-        "when tracking region error causes, accept subminimal results for faster execution."),
     nll_facts: bool = (false, parse_bool, [UNTRACKED],
                        "dump facts from NLL analysis into side files"),
-    disable_nll_user_type_assert: bool = (false, parse_bool, [UNTRACKED],
-        "disable user provided type assertion in NLL"),
     nll_dont_emit_read_for_match: bool = (false, parse_bool, [UNTRACKED],
         "in match codegen, do not include FakeRead statements (used by mir-borrowck)"),
     dont_buffer_diagnostics: bool = (false, parse_bool, [UNTRACKED],
diff --git a/src/test/run-pass/generator/yield-subtype.rs b/src/test/run-pass/generator/yield-subtype.rs
index c00662e6c0121..c38524857b4a2 100644
--- a/src/test/run-pass/generator/yield-subtype.rs
+++ b/src/test/run-pass/generator/yield-subtype.rs
@@ -3,7 +3,6 @@
 #![allow(dead_code)]
 
 // revisions:lexical nll
-//[nll]compile-flags: -Z disable-nll-user-type-assert
 #![cfg_attr(nll, feature(nll))]
 
 #![feature(generators)]
diff --git a/src/test/ui/span/dropck_vec_cycle_checked.nll.stderr b/src/test/ui/span/dropck_vec_cycle_checked.nll.stderr
index 3d9c9354769a4..05692515af846 100644
--- a/src/test/ui/span/dropck_vec_cycle_checked.nll.stderr
+++ b/src/test/ui/span/dropck_vec_cycle_checked.nll.stderr
@@ -1,5 +1,5 @@
 error[E0597]: `c2` does not live long enough
-  --> $DIR/dropck_vec_cycle_checked.rs:103:24
+  --> $DIR/dropck_vec_cycle_checked.rs:98:24
    |
 LL |     c1.v[0].v.set(Some(&c2));
    |                        ^^^ borrowed value does not live long enough
@@ -13,7 +13,7 @@ LL | }
    = note: values in a scope are dropped in the opposite order they are defined
 
 error[E0597]: `c3` does not live long enough
-  --> $DIR/dropck_vec_cycle_checked.rs:105:24
+  --> $DIR/dropck_vec_cycle_checked.rs:100:24
    |
 LL |     c1.v[1].v.set(Some(&c3));
    |                        ^^^ borrowed value does not live long enough
@@ -27,7 +27,7 @@ LL | }
    = note: values in a scope are dropped in the opposite order they are defined
 
 error[E0597]: `c1` does not live long enough
-  --> $DIR/dropck_vec_cycle_checked.rs:111:24
+  --> $DIR/dropck_vec_cycle_checked.rs:106:24
    |
 LL |     c3.v[0].v.set(Some(&c1));
    |                        ^^^ borrowed value does not live long enough
diff --git a/src/test/ui/span/dropck_vec_cycle_checked.rs b/src/test/ui/span/dropck_vec_cycle_checked.rs
index 4f627c4270ca5..c80e0386e6a15 100644
--- a/src/test/ui/span/dropck_vec_cycle_checked.rs
+++ b/src/test/ui/span/dropck_vec_cycle_checked.rs
@@ -1,12 +1,7 @@
-// compile-flags: -Z nll-subminimal-causes
-// (Work around rust-lang/rust#49998 by opting into nll-subminimal-causes.)
-
 // Reject mixing cyclic structure and Drop when using Vec.
 //
 // (Compare against compile-fail/dropck_arr_cycle_checked.rs)
 
-
-
 use std::cell::Cell;
 use id::Id;
 
diff --git a/src/test/ui/span/dropck_vec_cycle_checked.stderr b/src/test/ui/span/dropck_vec_cycle_checked.stderr
index 3a5214446119a..35e4314d0c66f 100644
--- a/src/test/ui/span/dropck_vec_cycle_checked.stderr
+++ b/src/test/ui/span/dropck_vec_cycle_checked.stderr
@@ -1,5 +1,5 @@
 error[E0597]: `c2` does not live long enough
-  --> $DIR/dropck_vec_cycle_checked.rs:103:25
+  --> $DIR/dropck_vec_cycle_checked.rs:98:25
    |
 LL |     c1.v[0].v.set(Some(&c2));
    |                         ^^ borrowed value does not live long enough
@@ -10,7 +10,7 @@ LL | }
    = note: values in a scope are dropped in the opposite order they are created
 
 error[E0597]: `c3` does not live long enough
-  --> $DIR/dropck_vec_cycle_checked.rs:105:25
+  --> $DIR/dropck_vec_cycle_checked.rs:100:25
    |
 LL |     c1.v[1].v.set(Some(&c3));
    |                         ^^ borrowed value does not live long enough
@@ -21,7 +21,7 @@ LL | }
    = note: values in a scope are dropped in the opposite order they are created
 
 error[E0597]: `c2` does not live long enough
-  --> $DIR/dropck_vec_cycle_checked.rs:107:25
+  --> $DIR/dropck_vec_cycle_checked.rs:102:25
    |
 LL |     c2.v[0].v.set(Some(&c2));
    |                         ^^ borrowed value does not live long enough
@@ -32,7 +32,7 @@ LL | }
    = note: values in a scope are dropped in the opposite order they are created
 
 error[E0597]: `c3` does not live long enough
-  --> $DIR/dropck_vec_cycle_checked.rs:109:25
+  --> $DIR/dropck_vec_cycle_checked.rs:104:25
    |
 LL |     c2.v[1].v.set(Some(&c3));
    |                         ^^ borrowed value does not live long enough
@@ -43,7 +43,7 @@ LL | }
    = note: values in a scope are dropped in the opposite order they are created
 
 error[E0597]: `c1` does not live long enough
-  --> $DIR/dropck_vec_cycle_checked.rs:111:25
+  --> $DIR/dropck_vec_cycle_checked.rs:106:25
    |
 LL |     c3.v[0].v.set(Some(&c1));
    |                         ^^ borrowed value does not live long enough
@@ -54,7 +54,7 @@ LL | }
    = note: values in a scope are dropped in the opposite order they are created
 
 error[E0597]: `c2` does not live long enough
-  --> $DIR/dropck_vec_cycle_checked.rs:113:25
+  --> $DIR/dropck_vec_cycle_checked.rs:108:25
    |
 LL |     c3.v[1].v.set(Some(&c2));
    |                         ^^ borrowed value does not live long enough