cargo kcov doesn't work on arm64

[andreeaflorescu]

I am trying to run cargo kcov on ARM and it doesn't seem to work.

What I've tried so far:

• cargo kcov <- this command ends up printing the help from kcov which makes me think that maybe parameters like are not correctly sent to kcov?

• Cloned this repository and ran the unit tests (on master). test_specimen hangs:

  
  > git clone git clone git@github.com:kennytm/cargo-kcov.git
  > cd cargo-kcov
  > cargo test
  
   Running `target/debug/cargo-kcov kcov --manifest-path specimen/Cargo.toml --all`
  kcov: warning: kcov: WARNING: kcov has been built without libbfd-dev (or
  kcov: binutils-dev), so the --verify option will not do anything.

test test_specimen ... test test_specimen has been running for over 60 seconds ^Ckcov: Process exited with signal 2 (SIGINT) at 0x0

I am running on an Ubuntu-18.04, kcov version 36.

[andreeaflorescu]

Verbose output on ARM:

       Build test executables
    Coverage found the following executables: []
     Running "kcov" "--merge" "--exclude-pattern=/root/.cargo" "--verify" "/kvm-ioctls/target/cov"

Verbose output on x86_64:

       Build test executables
    Coverage found the following executables: ["/kvm-ioctls/target/debug/deps/kvm_ioctls-867137c2bffdc532"]
     Running "kcov" "--exclude-pattern=/root/.cargo" "--verify" "/kvm-ioctls/target/cov/kvm_ioctls-867137c2bffdc532" "/kvm-ioctls/target/debug/deps/kvm_ioctls-867137c2bffdc532"

It looks like there's a problem in finding the targets.