nargo compile fails with "Error: The backend encountered an error"

[harshnambiar]

Aim

The goal was to compile a smart contract but whether the command is called directly or is called implicitly during the execution of 'aztec-cli compile .', the error is always the same:

Error: The backend encountered an error

Location:
tooling/nargo_cli/src/cli/mod.rs:90:5

Expected Behavior

The contract should compile

Bug

The contract does not compile and the above mentioned error shows up.

To Reproduce

1. mkdir sample
2. cd sample
3. nargo new --contract test
4. cd test
5. nargo compile

Installation Method

None

Nargo Version

nargo 0.11.1-aztec.0

Additional Context

I have tried to do the same with noirup -v aztec, but that did not work either.
I tried to uninstall nargo and then reinstall that, but to no avail.

Would you like to submit a PR for this Issue?

No

Support Needs

No response

[harshnambiar]

Additional Context for device:
OS: ubuntu 22.04

result for lshw -short
WARNING: you should run this program as super-user.
H/W path Device Class Description

                           system         Computer

/0 bus Motherboard
/0/0 memory 4GiB System memory
/0/1 processor Intel(R) Core(TM) i5-2410M CPU @ 2
/0/100 bridge 2nd Generation Core Processor Fami
/0/100/1 bridge Xeon E3-1200/2nd Generation Core P
/0/100/1/0 /dev/fb0 display Seymour [Radeon HD 6400M/7400M Ser
/0/100/1/0.1 card1 multimedia Caicos HDMI Audio [Radeon HD 6450
/0/100/1/0.1/0 input17 input HDA ATI HDMI HDMI/DP,pcm=3
/0/100/16 communication 6 Series/C200 Series Chipset Famil
/0/100/19 enp0s25 network 82579LM Gigabit Network Connection
/0/100/1a bus 6 Series/C200 Series Chipset Famil
/0/100/1b card0 multimedia 6 Series/C200 Series Chipset Famil
/0/100/1b/0 input18 input HDA Intel PCH Mic
/0/100/1b/1 input19 input HDA Intel PCH Line
/0/100/1b/2 input20 input HDA Intel PCH Dock Line Out
/0/100/1b/3 input21 input HDA Intel PCH Headphone
/0/100/1c bridge 6 Series/C200 Series Chipset Famil
/0/100/1c.1 bridge 6 Series/C200 Series Chipset Famil
/0/100/1c.2 bridge 6 Series/C200 Series Chipset Famil
/0/100/1c.2/0 bus IEEE 1394 Host Controller
/0/100/1c.2/0.1 mmc0 bus SD/MMC Host Controller
/0/100/1c.2/0.2 generic Standard SD Host Controller
/0/100/1c.3 bridge 6 Series/C200 Series Chipset Famil
/0/100/1c.3/0 wlp37s0b1 network BCM4313 802.11bgn Wireless Network
/0/100/1c.7 bridge 6 Series/C200 Series Chipset Famil
/0/100/1c.7/0 bus uPD720200 USB 3.0 Host Controller
/0/100/1d bus 6 Series/C200 Series Chipset Famil
/0/100/1f bridge QM67 Express Chipset LPC Controlle
/0/100/1f/0 system PnP device PNP0c02
/0/100/1f/1 generic PnP device IFX0102
/0/100/1f/2 system PnP device PNP0c02
/0/100/1f/3 system PnP device PNP0b00
/0/100/1f/4 printer PnP device PNP0401
/0/100/1f/5 input PnP device PNP0303
/0/100/1f/6 generic PnP device SYN017b
/0/100/1f.2 scsi1 storage 6 Series/C200 Series Chipset Famil
/0/100/1f.2/0.0.0 /dev/cdrom disk DVDRAM GT80N
/1 input0 input Sleep Button
/2 input1 input Lid Switch
/3 input12 input SynPS/2 Synaptics TouchPad
/4 input14 input SIGMACHIP Usb Mouse
/5 input15 input ST LIS3LV02DL Accelerometer
/6 input16 input HP WMI hotkeys
/7 input2 input Power Button
/8 input22 input HP HD Webcam [Fixed]: HP HD Web
/9 input3 input AT Translated Set 2 keyboard
/a input8 input PS/2 Generic Mouse
/b input9 input Video Bus
WARNING: output may be incomplete or inaccurate, you should run this program as super-user.

[TomAFrench]

Can you try running nargo backend uninstall acvm-backend-barretenberg and trying what you're doing again?

[harshnambiar]

Can you try running nargo backend uninstall acvm-backend-barretenberg and trying what you're doing again?

I did presently. No changes. The entire error message is: "backend encountered an error"

[TomAFrench]

Running on nightly should provide more information when this error occurs. This assumes you get similar errors when writing standard Noir programs (as nightly won't compile Aztec contracts).

[harshnambiar]

Running on nightly should provide more information when this error occurs.

so i just do a noirup -n and retry? (Yes, the issue does replicate while doing a nargo prove and a nargo compile as well)

[TomAFrench]

Yes, that's correct.

[harshnambiar]

Yes, that's correct.

After doing that and running nargo prove, the error is:
The backend encountered an error: ""

[TomAFrench]

@harshnambiar can you try with the latest nightly and see if this issue is resolved for you?

[Savio-Sou]

Closing this as stale for now. Feel free to comment / reopen if the issue is experienced with newer versions of Nargo.