Cargo doc broken on nightly-2017-09-11

[Lakier15]

Cargo doc runs on nightly-2017-09-11 without displaying any errors or warnings, yet, it doesn't produce any outputs.

I am on nightly-unknown-linux-gnu on Linux Mint.

alexgasbarroni@alexgasbarroni-Mint ~/git/sc3_firmware $ uname -a
Linux alexgasbarroni-Mint 4.8.0-54-generic #57~16.04.1-Ubuntu SMP Wed May 24 16:22:28 UTC 2017 x86_64 x86_64 x86_64 GNU/Linux

I tried with different nightly toolchains to see if it was a problem of my code, or if it was a problem of the toolchain.

• [OK] nightly-2017-09-08-x86_64-unknown-linux-gnu
• [OK] nightly-2017-09-09-x86_64-unknown-linux-gnu
• [OK] nightly-2017-09-10-x86_64-unknown-linux-gnu
• [Broken] nightly-2017-09-11-x86_64-unknown-linux-gnu

I also tried on different machines and the result is the same.

I tried:

cargo doc

cargo doc --open

cargo doc --verbose

but I cannot find any pointer to the problem.

Example output when running cargo doc --open

alexgasbarroni@alexgasbarroni-Mint ~/git/sc3_firmware $ cargo doc --open
 Documenting freerustos v0.1.0 (file:///home/alexgasbarroni/git/sc3_firmware/src/freerustos)
 Documenting tools v0.1.0 (file:///home/alexgasbarroni/git/sc3_firmware/src/tools)
 Documenting unicode-xid v0.0.4
 Documenting odds v0.2.25
 Documenting nodrop-union v0.1.9
 Documenting serde v1.0.11
 Documenting numtoa v0.0.7
 Documenting encode_unicode v0.3.1
 Documenting quote v0.3.15
 Documenting synom v0.11.3
 Documenting nodrop v0.1.9
 Documenting ssmarshal v1.0.0
 Documenting syn v0.11.11
 Documenting arrayvec v0.4.0
 Documenting serde_derive_internals v0.15.1
 Documenting serde_derive v1.0.11
 Documenting common v0.1.0 (file:///home/alexgasbarroni/git/sc3_firmware/src/common)
 Documenting peripheral_layer v0.1.0 (file:///home/alexgasbarroni/git/sc3_firmware/src/peripheral_layer)
 Documenting pal v0.1.0 (file:///home/alexgasbarroni/git/sc3_firmware/src/pal)
 Documenting pubsub v0.1.1 (file:///home/alexgasbarroni/git/sc3_firmware/src/pubsub)
 Documenting rc_inputs v0.1.0 (file:///home/alexgasbarroni/git/sc3_firmware/src/rc_inputs)
 Documenting fusion v0.1.0 (file:///home/alexgasbarroni/git/sc3_firmware/src/fusion)
 Documenting mixer v0.1.0 (file:///home/alexgasbarroni/git/sc3_firmware/src/mixer)
 Documenting imu_stream v0.1.0 (file:///home/alexgasbarroni/git/sc3_firmware/src/imu_stream)
 Documenting magnetic_declination v0.1.0 (file:///home/alexgasbarroni/git/sc3_firmware/src/magnetic_declination)
 Documenting device_layer v0.1.0 (file:///home/alexgasbarroni/git/sc3_firmware/src/device_layer)
 Documenting controllers v0.1.0 (file:///home/alexgasbarroni/git/sc3_firmware/src/controllers)
 Documenting actuators v0.1.0 (file:///home/alexgasbarroni/git/sc3_firmware/src/actuators)
 Documenting sensor_manager v0.1.0 (file:///home/alexgasbarroni/git/sc3_firmware/src/sensor_manager)
 Documenting pbit v0.1.0 (file:///home/alexgasbarroni/git/sc3_firmware/src/pbit)
 Documenting magnetometer v0.1.0 (file:///home/alexgasbarroni/git/sc3_firmware/src/magnetometer)
 Documenting accelerometer v0.1.0 (file:///home/alexgasbarroni/git/sc3_firmware/src/accelerometer)
 Documenting gyroscope v0.1.0 (file:///home/alexgasbarroni/git/sc3_firmware/src/gyroscope)
 Documenting console v0.1.0 (file:///home/alexgasbarroni/git/sc3_firmware/src/console)
 Documenting sc3_firmware v0.0.0 (file:///home/alexgasbarroni/git/sc3_firmware)
    Finished dev [unoptimized + debuginfo] target(s) in 0.14 secs

The browser window doesn't open, the target/doc folder is empty and the usual xdg-open command is missing.

Does anybody else have the same problem?

[alexcrichton]

Looks like this is because rustdoc as distributed is an empty file... investigating

[alexcrichton]

Likely caused by #44260

[retep998]

On Appveyor I was getting a much more frustrating error:

   Doc-tests winapi
error: An unknown error occurred
To learn more, run the command again with --verbose.

Upon updating to the latest nightly locally I got a more helpful error:

   Doc-tests winapi
error: command failed: 'rustdoc.exe'
info: caused by: %1 is not a valid Win32 application. (os error 193)

And as it turns out, rustdoc.exe is empty here as well:

[KodrAus]

Oh that's why my builds were failing attempting to commit an empty folder full of 'docs'...

[Lakier15]

Thank you guys! That fixed it :)