diff --git a/.travis.sh b/.travis.sh
index f275e0cb..c2069073 100755
--- a/.travis.sh
+++ b/.travis.sh
@@ -60,16 +60,10 @@ tests_sequence() {
     )
 }
 
-tests_sequence_with_runners() {
-    title "testing from workspace directory"
-    ( \
-        cd test-ws \
-        && cargo clean \
-        &&   cargo +nightly test -Zbuild-std --target $1 pass \
-        && ! cargo +nightly test -Zbuild-std --target $1 fails \
-        && ! cargo +nightly test -Zbuild-std --target $1 test \
-    )
-
+tests_sequence_unstable_targets() {
+    # There's something odd with using the .cargo/config runner attribute and
+    # workspaces when the runner uses `cargo run --manifest-path ../Cargo.toml
+    # --bin cargo-dinghy ...`
     title "testing from project directory"
     ( \
         cd test-ws/test-app \
@@ -78,15 +72,6 @@ tests_sequence_with_runners() {
         && ! cargo +nightly test -Zbuild-std --target $1 fails \
         && ! cargo +nightly test -Zbuild-std --target $1 test \
     )
-
-    title "test from workspace directory with project filter"
-    ( \
-        cd test-ws \
-        && cargo clean \
-        &&   cargo +nightly test -p test-app -Zbuild-std --target $1 pass \
-        && ! cargo +nightly test -p test-app -Zbuild-std --target $1 fails \
-        && ! cargo +nightly test -p test-app -Zbuild-std --target $1 \
-    )
 }
 
 
@@ -112,22 +97,22 @@ then
 
      title "••••• Darwin: tvos simulator tests •••••"
      title "boot a simulator"
-     rustup toolchain add nightly --components rust-src;
+     rustup toolchain add nightly --component rust-src;
      TVOS_RUNTIME_ID=$(xcrun simctl list runtimes | grep tvOS | cut -d ' ' -f 7 | tail -1)
      export TV_SIM_ID=$(xcrun simctl create My-4ktv com.apple.CoreSimulator.SimDeviceType.Apple-TV-4K-3rd-generation-4K $TVOS_RUNTIME_ID)
 
      xcrun simctl boot $TV_SIM_ID
-     tests_sequence_with_runners x86_64-apple-tvos
+     tests_sequence_unstable_targets x86_64-apple-tvos
      xcrun simctl delete $TV_SIM_ID
 
      title "••••• Darwin: watchvos simulator tests •••••"
      title "boot a simulator"
-     rustup toolchain add nightly --components rust-src;
+     rustup toolchain add nightly --component rust-src;
      WATCHOS_RUNTIME_ID=$(xcrun simctl list runtimes | grep watchOS | cut -d ' ' -f 7 | tail -1)
      export WATCHOS_SIM_ID=$(xcrun simctl create My-apple-watch com.apple.CoreSimulator.SimDeviceType.Apple-Watch-SE-44mm-2nd-generation $WATCHOS_RUNTIME_ID)
 
      xcrun simctl boot $WATCHOS_SIM_ID
-     tests_sequence_with_runners x86_64-apple-watchos-sim
+     tests_sequence_unstable_targets x86_64-apple-watchos-sim
      xcrun simctl delete $WATCHOS_SIM_ID
 else
     if [ -n "$ANDROID_SDK_ROOT" ]
diff --git a/test-ws/.cargo/config.toml b/test-ws/.cargo/config.toml
deleted file mode 100644
index 18e737cc..00000000
--- a/test-ws/.cargo/config.toml
+++ /dev/null
@@ -1,17 +0,0 @@
-[target.aarch64-apple-watchos-sim]
-runner = "cargo run --manifest-path ../Cargo.toml --bin cargo-dinghy -- -p auto-watchos-aarch64-sim runner"
-
-[target.x86_64-apple-watchos-sim]
-runner = "cargo run --manifest-path ../Cargo.toml --bin cargo-dinghy -- -p auto-watchos-x86_64-sim runner"
-
-[target.aarch64-apple-tvos-sim]
-runner = "cargo run --manifest-path ../Cargo.toml --bin cargo-dinghy -- -p auto-tvos-aarch64-sim runner"
-
-[target.x86_64-apple-tvos]
-runner = "cargo run --manifest-path ../Cargo.toml --bin cargo-dinghy -- -p auto-tvos-x86_64 runner"
-
-[target.aarch64-apple-ios-sim]
-runner = "cargo run --manifest-path ../Cargo.toml --bin cargo-dinghy -- -p auto-ios-aarch64-sim runner"
-
-[target.x86_64-apple-ios]
-runner = "cargo run --manifest-path ../Cargo.toml --bin cargo-dinghy -- -p auto-ios-x86_64 runner"
diff --git a/test-ws/test-app/.cargo/config.toml b/test-ws/test-app/.cargo/config.toml
new file mode 100644
index 00000000..4711d3cb
--- /dev/null
+++ b/test-ws/test-app/.cargo/config.toml
@@ -0,0 +1,17 @@
+[target.aarch64-apple-watchos-sim]
+runner = "cargo run --manifest-path ../../Cargo.toml --bin cargo-dinghy -- -p auto-watchos-aarch64-sim runner"
+
+[target.x86_64-apple-watchos-sim]
+runner = "cargo run --manifest-path ../../Cargo.toml --bin cargo-dinghy -- -p auto-watchos-x86_64-sim runner"
+
+[target.aarch64-apple-tvos-sim]
+runner = "cargo run --manifest-path ../../Cargo.toml --bin cargo-dinghy -- -p auto-tvos-aarch64-sim runner"
+
+[target.x86_64-apple-tvos]
+runner = "cargo run --manifest-path ../../Cargo.toml --bin cargo-dinghy -- -p auto-tvos-x86_64 runner"
+
+[target.aarch64-apple-ios-sim]
+runner = "cargo run --manifest-path ../../Cargo.toml --bin cargo-dinghy -- -p auto-ios-aarch64-sim runner"
+
+[target.x86_64-apple-ios]
+runner = "cargo run --manifest-path ../../Cargo.toml --bin cargo-dinghy -- -p auto-ios-x86_64 runner"