diff --git a/Cargo.lock b/Cargo.lock
index 4a8cfdf..b725c90 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -1200,9 +1200,9 @@ dependencies = [
 
 [[package]]
 name = "flop"
-version = "0.2.4"
+version = "0.2.7"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a2091b06ad394088b74fd28e3cb5a1ec6d0e6295b6046a7422a39db269a76f31"
+checksum = "6c874a3d7091f873a1776dc18431569efe5fd6ccc9174538b4659cc04edae8bf"
 dependencies = [
  "ar",
  "async-recursion",
@@ -1221,7 +1221,7 @@ dependencies = [
  "smoosh",
  "test-log",
  "tokio",
- "tokio-tar-up2date",
+ "tokio-tar",
  "tracing",
  "tracing-subscriber",
 ]
@@ -2537,9 +2537,9 @@ dependencies = [
 
 [[package]]
 name = "redox_syscall"
-version = "0.2.16"
+version = "0.3.5"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fb5a58c1855b4b6819d59012155603f0b22ad30cad752600aadfcb695265519a"
+checksum = "567664f262709473930a4bf9e51bf2ebf3348f2e748ccc50dea20646858f8f29"
 dependencies = [
  "bitflags 1.3.2",
 ]
@@ -3148,15 +3148,15 @@ dependencies = [
 ]
 
 [[package]]
-name = "tokio-tar-up2date"
+name = "tokio-tar"
 version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a369da119ec3d348f44e6cb191191872e1ce0eef282ac7c87f18d857a85dc2d5"
+checksum = "9d5714c010ca3e5c27114c1cdeb9d14641ace49874aa5626d7149e47aedace75"
 dependencies = [
  "filetime",
  "futures-core",
  "libc",
- "redox_syscall 0.2.16",
+ "redox_syscall 0.3.5",
  "tokio",
  "tokio-stream",
  "xattr",
@@ -3676,11 +3676,13 @@ dependencies = [
 
 [[package]]
 name = "xattr"
-version = "0.2.3"
+version = "1.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "6d1526bbe5aaeb5eb06885f4d987bcdfa5e23187055de9b83fe00156a821fabc"
+checksum = "8da84f1a25939b27f6820d92aed108f83ff920fdf11a7b19366c27c4cda81d4f"
 dependencies = [
  "libc",
+ "linux-raw-sys",
+ "rustix",
 ]
 
 [[package]]
diff --git a/Cargo.toml b/Cargo.toml
index e77089b..3b3efe6 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,7 +21,7 @@ ctor = "0.2.7"
 disk-drive = "0.1.10"
 eyre = "0.6.12"
 flail = "0.3.0"
-flop = "0.2.4"
+flop = "0.2.7"
 floppy-disk = "0.2.6"
 futures-util = "0.3.30"
 hyper = { version = "0.14.27", features = ["stream"] }
diff --git a/src/artifact/tarball.rs b/src/artifact/tarball.rs
index 7257495..b77a17e 100644
--- a/src/artifact/tarball.rs
+++ b/src/artifact/tarball.rs
@@ -8,6 +8,7 @@ use floppy_disk::tokio_fs::TokioFloppyDisk;
 use floppy_disk::FloppyDisk;
 use smoosh::CompressionType;
 use tokio::fs::File;
+use tokio::fs::OpenOptions;
 use tracing::*;
 
 use crate::fs::MemFS;
@@ -150,7 +151,12 @@ impl ArtifactProducer for TarballProducer {
             ));
             path
         };
-        let mut compressed_tarball = File::open(&compressed_path).await?;
+        let mut compressed_tarball = OpenOptions::new()
+            .write(true)
+            .create(true)
+            .truncate(true)
+            .open(&compressed_path)
+            .await?;
         smoosh::recompress(
             &mut built_tarball,
             &mut compressed_tarball,
diff --git a/src/util/mod.rs b/src/util/mod.rs
index b61422e..f3d1192 100644
--- a/src/util/mod.rs
+++ b/src/util/mod.rs
@@ -28,8 +28,10 @@ pub fn test_init() {
         let subscriber = tracing_subscriber::FmtSubscriber::builder()
             .with_env_filter(tracing_subscriber::EnvFilter::from_default_env())
             .finish();
-        tracing::subscriber::set_global_default(subscriber)
-            .expect("setting default subscriber failed");
+        match tracing::subscriber::set_global_default(subscriber) {
+            Ok(_) => println!("set global tracing subscriber"),
+            Err(_) => println!("failed to set global tracing subscriber (already set?)"),
+        }
     });
 }