diff --git a/bootstrap/Cargo.lock b/bootstrap/Cargo.lock
index 3cef880b45..269eacbdcb 100644
--- a/bootstrap/Cargo.lock
+++ b/bootstrap/Cargo.lock
@@ -40,7 +40,7 @@ checksum = "d9c4f5dac5e15c24eb999c26181a6ca40b39fe946cbe4c263c7209467bc83af2"
 [[package]]
 name = "generic-rt"
 version = "0.1.0"
-source = "git+https://gitlab.redox-os.org/redox-os/relibc.git#099c35f3caa1d8c289d14423607c494c59ad8a51"
+source = "git+https://gitlab.redox-os.org/redox-os/relibc.git#fe5273890a8f39f8ffa1507bfb243d76270e8a27"
 
 [[package]]
 name = "goblin"
@@ -143,7 +143,7 @@ checksum = "436d45c2b6a5b159d43da708e62b25be3a4a3d5550d654b72216ade4c4bfd717"
 [[package]]
 name = "redox-rt"
 version = "0.1.0"
-source = "git+https://gitlab.redox-os.org/redox-os/relibc.git#099c35f3caa1d8c289d14423607c494c59ad8a51"
+source = "git+https://gitlab.redox-os.org/redox-os/relibc.git#fe5273890a8f39f8ffa1507bfb243d76270e8a27"
 dependencies = [
  "bitflags",
  "generic-rt",
diff --git a/bootstrap/src/exec.rs b/bootstrap/src/exec.rs
index 7d32305718..f1c01ed647 100644
--- a/bootstrap/src/exec.rs
+++ b/bootstrap/src/exec.rs
@@ -2,7 +2,7 @@ use alloc::borrow::ToOwned;
 use alloc::vec::Vec;
 
 use syscall::flag::{O_CLOEXEC, O_RDONLY};
-use syscall::{EINTR, Error};
+use syscall::{Error, EINTR};
 
 use redox_rt::proc::*;
 
@@ -38,23 +38,24 @@ pub fn main() -> ! {
     log::set_max_level(log::LevelFilter::Warn);
     let _ = log::set_logger(&Logger);
 
+    let mut env_bytes = [0_u8; 4096];
     let envs = {
-        let mut env = [0_u8; 4096];
-
         let fd = FdGuard::open("/scheme/sys/env", O_RDONLY).expect("bootstrap: failed to open env");
-        let bytes_read = fd.read(&mut env).expect("bootstrap: failed to read env");
+        let bytes_read = fd
+            .read(&mut env_bytes)
+            .expect("bootstrap: failed to read env");
 
-        if bytes_read >= env.len() {
+        if bytes_read >= env_bytes.len() {
             // TODO: Handle this, we can allocate as much as we want in theory.
             panic!("env is too large");
         }
-        let env = &mut env[..bytes_read];
+        let env_bytes = &mut env_bytes[..bytes_read];
 
-        let raw_iter = || env.split(|c| *c == b'\n').filter(|var| !var.is_empty());
-
-        let iter = || raw_iter().filter(|var| !var.starts_with(b"INITFS_"));
-
-        iter().map(|var| var.to_owned()).collect::<Vec<_>>()
+        env_bytes
+            .split(|&c| c == b'\n')
+            .filter(|var| !var.is_empty())
+            .filter(|var| !var.starts_with(b"INITFS_"))
+            .collect::<Vec<_>>()
     };
 
     unsafe extern "C" {
@@ -90,10 +91,8 @@ pub fn main() -> ! {
     // from this point, this_thr_fd is no longer valid
 
     const CWD: &[u8] = b"/scheme/initfs";
-    const DEFAULT_SCHEME: &[u8] = b"file";
     let extrainfo = ExtraInfo {
         cwd: Some(CWD),
-        default_scheme: Some(DEFAULT_SCHEME),
         sigprocmask: 0,
         sigignmask: 0,
         umask: redox_rt::sys::get_umask(),
@@ -102,14 +101,6 @@ pub fn main() -> ! {
     };
 
     let path = "/scheme/initfs/bin/init";
-    let total_args_envs_auxvpointee_size = path.len()
-        + 1
-        + envs.len()
-        + envs.iter().map(|v| v.len()).sum::<usize>()
-        + CWD.len()
-        + 1
-        + DEFAULT_SCHEME.len()
-        + 1;
 
     let image_file = FdGuard::open(path, O_RDONLY)
         .expect("failed to open init")
@@ -126,9 +117,8 @@ pub fn main() -> ! {
         init_proc_fd,
         &memory,
         path.as_bytes(),
-        [path],
-        envs.iter(),
-        total_args_envs_auxvpointee_size,
+        &[path.as_bytes()],
+        &envs,
         &extrainfo,
         None,
     )