fix file created_at not working on some targets

backend/Cargo.lock

@@ -1662,9 +1662,9 @@ checksum = "989e6739f80c4ad5b13e0fd7fe89531180375b18520cc8c82080e4dc4035b84f"
 
 [[package]]
 name = "rustix"
-version = "1.0.7"
+version = "1.0.8"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "c71e83d6afe7ff64890ec6b71d6a69bb8a610ab78ce364b3352876bb4c801266"
+checksum = "11181fbabf243db407ef8df94a6ce0b2f9a733bd8be4ad02b4eda9602296cac8"
 dependencies = [
  "bitflags",
  "errno",
@@ -2524,6 +2524,7 @@ dependencies = [
  "hex",
  "mime_guess",
  "regex",
+ "rustix",
  "serde",
  "serde_json",
  "sqlx",

backend/Cargo.toml

@@ -22,6 +22,7 @@ dotenv = "0.15.0"
 hex = "0.4.3"
 mime_guess = "2.0.5"
 regex = "1.11.1"
+rustix = { version = "1.0.8", features = ["fs"] }
 serde = { version = "1.0.219", features = ["derive"] }
 serde_json = "1.0.140"
 sqlx = { version = "0.8.6", features = ["chrono", "postgres", "runtime-tokio", "time", "uuid"] }

backend/src/lib/outbound/file_system.rs

@@ -1,6 +1,5 @@
-use std::time::UNIX_EPOCH;
-
 use anyhow::{Context, anyhow, bail};
+use rustix::fs::statx;
 use tokio::{
     fs,
     io::{self, AsyncWriteExt as _},
@@ -72,12 +71,19 @@ impl FileSystem {
                     continue;
                 }
             };
-            let metadata = entry.metadata().await?;
-            let created_at = metadata
-                .created()
-                .ok()
-                .map(|c| c.duration_since(UNIX_EPOCH).ok().map(|c| c.as_secs()))
-                .flatten();
+
+            // TODO: Use `DirEntry::metadata` once `target=x86_64-unknown-linux-musl` updates from musl 1.2.3 to 1.2.5
+            // https://github.com/rust-lang/rust/pull/142682
+            let created_at = unsafe {
+                statx(
+                    std::os::fd::BorrowedFd::borrow_raw(-100),
+                    entry.path(),
+                    rustix::fs::AtFlags::empty(),
+                    rustix::fs::StatxFlags::BTIME,
+                )
+            }
+            .ok()
+            .map(|statx| statx.stx_btime.tv_sec as u64);
 
             let mime_type = match file_type {
                 FileType::File => FileMimeType::from_name(&name),