Failure with HEAD @ afff2c38480c4c3a1681f283fe882392f76a690a and rustc set to latest nightly (rustup show output below)

gistfile1.txt

[robin@neuron src]$ rustup show
Default host: x86_64-unknown-linux-gnu

installed toolchains
--------------------

stable-x86_64-unknown-linux-gnu (default)
nightly-2017-11-20-x86_64-unknown-linux-gnu
nightly-2017-11-27-x86_64-unknown-linux-gnu
nightly-x86_64-unknown-linux-gnu

active toolchain
----------------

nightly-x86_64-unknown-linux-gnu (directory override for '/home/robin/work/repos/redox/src')
rustc 1.24.0-nightly (cfba0d446 2017-12-05

[robin@neuron src]$ make all
cd kernel && xargo clean
rm -rf build/initfs
mkdir -p build/initfs
cargo run --manifest-path installer/Cargo.toml -- --cookbook=cookbook -c initfs.toml build/initfs/
    Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
     Running `installer/target/debug/redox_installer --cookbook=cookbook -c initfs.toml build/initfs/`
Install Config {
    general: GeneralConfig {
        prompt: false
    },
    packages: {
        "drivers": PackageConfig {
            version: None,
            git: None,
            path: None
        },
        "init": PackageConfig {
            version: None,
            git: None,
            path: None
        },
        "redoxfs": PackageConfig {
            version: None,
            git: None,
            path: None
        }
    },
    files: [
        FileConfig {
            path: "/etc/init.rc",
            data: "export PATH /bin\nexport TMPDIR /tmp\nvesad T T G\nstdio display:1\nps2d us\npcid /etc/pcid/initfs.toml\nredoxfs --uuid $REDOXFS_UUID file\ncd file:\nexport PATH file:/bin\nrun.d /etc/init.d\n",
            symlink: false
        }
    ],
    users: {}
} to build/initfs/
Create directory build/initfs/
repo - building drivers
cook - drivers build
   Compiling pcid v0.1.0 (file:///home/robin/work/repos/redox/src/cookbook/recipes/drivers/build/pcid)
error: borrow of packed field requires unsafe function or block (error E0133)
  --> pcid/src/main.rs:46:29
   |
46 |                             header.vendor_id, header.device_id,
   |                             ^^^^^^^^^^^^^^^^
   |
note: lint level defined here
  --> pcid/src/main.rs:1:9
   |
1  | #![deny(warnings)]
   |         ^^^^^^^^
   = note: #[deny(safe_packed_borrows)] implied by #[deny(warnings)]
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>

error: borrow of packed field requires unsafe function or block (error E0133)
  --> pcid/src/main.rs:46:47
   |
46 |                             header.vendor_id, header.device_id,
   |                                               ^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>

error: borrow of packed field requires unsafe function or block (error E0133)
  --> pcid/src/main.rs:81:33
   |
81 |                     for i in 0..header.bars.len() {
   |                                 ^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>

error: borrow of packed field requires unsafe function or block (error E0133)
   --> pcid/src/main.rs:127:60
    |
127 |                                         match PciBar::from(header.bars[i]) {
    |                                                            ^^^^^^^^^^^
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
    = note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>

error: borrow of packed field requires unsafe function or block (error E0133)
   --> pcid/src/main.rs:145:71
    |
145 |                                         "$VENID" => format!("{:>04X}",header.vendor_id),
    |                                                                       ^^^^^^^^^^^^^^^^
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
    = note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>

error: borrow of packed field requires unsafe function or block (error E0133)
   --> pcid/src/main.rs:146:71
    |
146 |                                         "$DEVID" => format!("{:>04X}",header.device_id),
    |                                                                       ^^^^^^^^^^^^^^^^
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
    = note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>

error: #[derive] can't be used on a non-Copy #[repr(packed)] struct (error E0133)
 --> pcid/src/pci/header.rs:4:10
  |
4 | #[derive(Debug, Default)]
  |          ^^^^^
  |
  = warning: this was previously accepted by the compiler but is being phased out; it will[robin@neuron src]$ make all
cd kernel && xargo clean
rm -rf build/initfs
mkdir -p build/initfs
cargo run --manifest-path installer/Cargo.toml -- --cookbook=cookbook -c initfs.toml build/initfs/
    Finished dev [unoptimized + debuginfo] target(s) in 0.0 secs
     Running `installer/target/debug/redox_installer --cookbook=cookbook -c initfs.toml build/initfs/`
Install Config {
    general: GeneralConfig {
        prompt: false
    },
    packages: {
        "drivers": PackageConfig {
            version: None,
            git: None,
            path: None
        },
        "init": PackageConfig {
            version: None,
            git: None,
            path: None
        },
        "redoxfs": PackageConfig {
            version: None,
            git: None,
            path: None
        }
    },
    files: [
        FileConfig {
            path: "/etc/init.rc",
            data: "export PATH /bin\nexport TMPDIR /tmp\nvesad T T G\nstdio display:1\nps2d us\npcid /etc/pcid/initfs.toml\nredoxfs --uuid $REDOXFS_UUID file\ncd file:\nexport PATH file:/bin\nrun.d /etc/init.d\n",
            symlink: false
        }
    ],
    users: {}
} to build/initfs/
Create directory build/initfs/
repo - building drivers
cook - drivers build
   Compiling pcid v0.1.0 (file:///home/robin/work/repos/redox/src/cookbook/recipes/drivers/build/pcid)
error: borrow of packed field requires unsafe function or block (error E0133)
  --> pcid/src/main.rs:46:29
   |
46 |                             header.vendor_id, header.device_id,
   |                             ^^^^^^^^^^^^^^^^
   |
note: lint level defined here
  --> pcid/src/main.rs:1:9
   |
1  | #![deny(warnings)]
   |         ^^^^^^^^
   = note: #[deny(safe_packed_borrows)] implied by #[deny(warnings)]
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>

error: borrow of packed field requires unsafe function or block (error E0133)
  --> pcid/src/main.rs:46:47
   |
46 |                             header.vendor_id, header.device_id,
   |                                               ^^^^^^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>

error: borrow of packed field requires unsafe function or block (error E0133)
  --> pcid/src/main.rs:81:33
   |
81 |                     for i in 0..header.bars.len() {
   |                                 ^^^^^^^^^^^
   |
   = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
   = note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>

error: borrow of packed field requires unsafe function or block (error E0133)
   --> pcid/src/main.rs:127:60
    |
127 |                                         match PciBar::from(header.bars[i]) {
    |                                                            ^^^^^^^^^^^
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
    = note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>

error: borrow of packed field requires unsafe function or block (error E0133)
   --> pcid/src/main.rs:145:71
    |
145 |                                         "$VENID" => format!("{:>04X}",header.vendor_id),
    |                                                                       ^^^^^^^^^^^^^^^^
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
    = note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>

error: borrow of packed field requires unsafe function or block (error E0133)
   --> pcid/src/main.rs:146:71
    |
146 |                                         "$DEVID" => format!("{:>04X}",header.device_id),
    |                                                                       ^^^^^^^^^^^^^^^^
    |
    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
    = note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>

error: #[derive] can't be used on a non-Copy #[repr(packed)] struct (error E0133)
 --> pcid/src/pci/header.rs:4:10
  |
4 | #[derive(Debug, Default)]
  |          ^^^^^
  |
  = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in a future release!
  = note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>

error: aborting due to 7 previous errors

error: Could not compile `pcid`.

To learn more, run the command again with --verbose.
./repo.sh failed.make: *** [mk/initfs.mk:5: build/initfs.tag] Error 1
 become a hard error in a future release!
  = note: for more information, see issue #46043 <https://github.com/rust-lang/rust/issues/46043>

error: aborting due to 7 previous errors

error: Could not compile `pcid`.

To learn more, run the command again with --verbose.
./repo.sh failed.make: *** [mk/initfs.mk:5: build/initfs.tag] Error 1