After starting up evcxr produces an error -> Initialization failed: Child process terminated with status: signal: 9

[phil-markarian]

Not sure why this error arrises but, I followed the directions on the github page for installation. I am on a Macbook Air M1, so I am thinking that this might possibly be the issue. I never had the issue when installing and running it on WSL on Windows. Any ideas on how to solve this issue?

[davidlattimore]

I don't have much by way of ideas I'm afraid. The only Mac I have access to is github's CI infrastructure which runs the tests when new commits are pushed. It currently passes there. The only thing that comes to mind is that you could try cloning the evcxr repository and running cargo test - probably the tests will fail for you due to whatever environmental difference is causing the problem, but it might give some clues. Sorry I can't be of more help, and if you do figure out how to make it work, I'd love to know.

[sigmaSd]

Might be relevent rust-lang/cargo#8913

[phil-markarian]

I ran cargo test and it came back with an error that said
error: failed to run custom build command for zmq-sys v0.11.0`

Caused by:
process didn't exit successfully: /Users/tatsuo/Study/evcxr/target/debug/build/zmq-sys-789ee30eca8f2ad1/build-script-main (exit status: 101)
--- stdout
cargo:rerun-if-changed=build/main.rs
cargo:rerun-if-env-changed=PROFILE
CMAKE_TOOLCHAIN_FILE_aarch64-apple-darwin = None
CMAKE_TOOLCHAIN_FILE_aarch64_apple_darwin = None
HOST_CMAKE_TOOLCHAIN_FILE = None
CMAKE_TOOLCHAIN_FILE = None
CMAKE_GENERATOR_aarch64-apple-darwin = None
CMAKE_GENERATOR_aarch64_apple_darwin = None
HOST_CMAKE_GENERATOR = None
CMAKE_GENERATOR = None
CMAKE_PREFIX_PATH_aarch64-apple-darwin = None
CMAKE_PREFIX_PATH_aarch64_apple_darwin = None
HOST_CMAKE_PREFIX_PATH = None
CMAKE_PREFIX_PATH = None
CMAKE_aarch64-apple-darwin = None
CMAKE_aarch64_apple_darwin = None
HOST_CMAKE = None
CMAKE = None
running: "cmake" "/Users/tatsuo/.cargo/registry/src/git.colasdn.top-1ecc6299db9ec823/zeromq-src-0.1.10+4.3.2/vendor" "-DCMAKE_INSTALL_LIBDIR=lib" "-DCMAKE_C_STANDARD=99" "-DZMQ_BUILD_TESTS=OFF" "-DENABLE_DRAFTS=OFF" "-DENABLE_CURVE=ON" "-DCMAKE_BUILD_TYPE=Debug" "-DWITH_PERF_TOOL=OFF" "-DBUILD_SHARED=OFF" "-DBUILD_STATIC=ON" "-DWITH_LIBSODIUM=OFF" "-DCMAKE_INSTALL_PREFIX=/Users/tatsuo/Study/evcxr/target/debug/build/zmq-sys-d25729612476a92f/out" "-DCMAKE_C_FLAGS= -ffunction-sections -fdata-sections -fPIC -arch arm64" "-DCMAKE_C_COMPILER=/usr/bin/cc" "-DCMAKE_CXX_FLAGS= -ffunction-sections -fdata-sections -fPIC -arch arm64" "-DCMAKE_CXX_COMPILER=/usr/bin/c++" "-DCMAKE_ASM_FLAGS= -ffunction-sections -fdata-sections -fPIC -arch arm64" "-DCMAKE_ASM_COMPILER=/usr/bin/cc"

--- stderr
thread 'main' panicked at '
failed to execute command: No such file or directory (os error 2)
is cmake not installed?

build script failed, must exit now', /Users/tatsuo/.cargo/registry/src/git.colasdn.top-1ecc6299db9ec823/cmake-0.1.46/src/lib.rs:974:5
note: run with RUST_BACKTRACE=1 environment variable to display a backtrace
warning: build failed, waiting for other jobs to finish...
error: build failed`

After reading the error I installed cmake via brew and rest cargo test again and got

`error[E0658]: use of unstable library feature 'iter_map_while': recently added
--> /Users/tatsuo/.cargo/registry/src/git.colasdn.top-1ecc6299db9ec823/ra_ap_ide_db-0.0.87/src/helpers.rs:313:55
|
313 | input.syntax().children_with_tokens().skip(1).map_while(|it| match it.into_token() {
| ^^^^^^^^^
|
= note: see issue #68537 rust-lang/rust#68537 for more information

For more information about this error, try rustc --explain E0658.
error: could not compile ra_ap_ide_db due to previous error
warning: build failed, waiting for other jobs to finish...`

so I am going to look into the issue link that it gave to see if I can fix it.

[bjorn3]

1. Have you installed cmake? zmq-sys needs it to build the libzmq library.
2. Which rustc version do you use? You can run rustc -V to see this.

[davidlattimore]

Ah, I guess although you have the dependencies required for evcxr_repl, you don't have the dependencies required for evcxr_jupyter. You can run just the evcxr tests, by running cargo test -p evcxr.

[phil-markarian]

1. Have you installed cmake? zmq-sys needs it to build the libzmq library.
2. Which rustc version do you use? You can run rustc -V to see this.

1. Yeah, I installed it. The post didn't format correctly so it is hard to see that I wrote that I added cmake after that error came up and when I ran cargo test again a different error arose.
2. version 1.56.1

[bjorn3]

2. version 1.56.1

The minimal supported rustc version of rust-analyzer is 1.57: https://github.com/rust-analyzer/rust-analyzer/blob/0f8c96c92689af8378dbe9f466c6bf15a3a27458/xtask/Cargo.toml#L7 Rust-analyzer is used by evcxr to get the type of variables that should be preserved between inputs.

[phil-markarian]

2. version 1.56.1

The minimal supported rustc version of rust-analyzer is 1.57: https://github.com/rust-analyzer/rust-analyzer/blob/0f8c96c92689af8378dbe9f466c6bf15a3a27458/xtask/Cargo.toml#L7 Rust-analyzer is used by evcxr to get the type of variables that should be preserved between inputs.

So I tried updating and finally have been able to run cargo test -p evcxr finally. However the some of the tests did not pass.

`running 21 tests
test cargo_metadata::tests::test_library_names_from_metadata ... ok
test eval_context::tests::test_replace_reserved_words_in_type ... ok
test crate_config::tests::make_paths_absolute ... ok
test code_block::test::basic_usage ... ok
test rust_analyzer::test::test_is_type_valid ... ok
test statement_splitter::test::crate_attributes ... ok
test statement_splitter::test::expression ... ok
test statement_splitter::test::macro_call ... ok
test statement_splitter::test::multiple_lines ... ok
test statement_splitter::test::else_statements ... ok
test eval_context::tests::test_attributes ... ok
test statement_splitter::test::single_line_use_and_expr ... ok
test statement_splitter::test::partial_code ... ok
test statement_splitter::test::single_line ... ok
test use_trees::tests::test_glob ... ok
test statement_splitter::test::statement_ends_with_brace ... ok
test use_trees::tests::test_complex_tree ... ok
test use_trees::tests::test_underscore ... ok
test cargo_metadata::tests::invalid_feature ... ok
test cargo_metadata::tests::valid_dependency ... ok
test rust_analyzer::test::get_variable_types ... ok

test result: ok. 21 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.11s

 Running unittests (target/debug/deps/testing_runtime-7df946f1793c0275)

running 0 tests

test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s

 Running tests/integration_tests.rs (target/debug/deps/integration_tests-c18652f8b64bc046)

running 37 tests
test crate_name_with_hyphens ... FAILED
test const_generics_with_explicit_type ... FAILED
test abort_and_restart ... FAILED
test continue_execution_after_bad_use_statement ... FAILED
test check_for_errors ... FAILED
test error_from_macro_expansion ... FAILED
test format ... FAILED
test define_then_call_function ... FAILED
test int_array ... FAILED
test define_then_call_macro ... FAILED
test code_completion ... FAILED
test invalid_code ... FAILED
test missing_semicolon_on_let_stmt ... FAILED
test multiple_identical_use_statements ... FAILED
test non_concrete_types ... FAILED
test non_semi_statements ... FAILED
test moved_value ... FAILED
test partial_destructuring ... FAILED
test question_mark_operator ... FAILED
test partially_inferred_variable_type ... FAILED
test print_then_assign_variable ... FAILED
test rc_refcell_etc ... FAILED
test redefine_type_with_existing_var ... FAILED
test reserved_words ... FAILED
test save_and_restore_variables ... FAILED
test single_statement ... FAILED
test statement_and_expression ... FAILED
test repeated_use_statements ... FAILED
test struct_type_inference ... FAILED
test tls_implementing_drop ... FAILED
test unnamable_type_closure ... FAILED
test unnamable_type_impl_trait ... FAILED
test variable_assignment_compile_fail_then_use_statement ... FAILED
test crate_deps ... FAILED
test printing ... FAILED
test function_panics_without_variable_preserving ... FAILED
test function_panics_with_variable_preserving ... FAILED

failures:

---- crate_name_with_hyphens stdout ----
thread 'crate_name_with_hyphens' panicked at 'called Result::unwrap() on an Err value: ChildProcessTerminated("Child process terminated with status: signal: 9")', evcxr/src/eval_context.rs:256:18
note: run with RUST_BACKTRACE=1 environment variable to display a backtrace

---- const_generics_with_explicit_type stdout ----
thread 'const_generics_with_explicit_type' panicked at 'called Result::unwrap() on an Err value: ChildProcessTerminated("Child process terminated with status: signal: 9")', evcxr/src/eval_context.rs:256:18

---- abort_and_restart stdout ----
thread 'abort_and_restart' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- continue_execution_after_bad_use_statement stdout ----
thread 'continue_execution_after_bad_use_statement' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- check_for_errors stdout ----
thread 'check_for_errors' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- error_from_macro_expansion stdout ----
thread 'error_from_macro_expansion' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- format stdout ----
thread 'format' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- define_then_call_function stdout ----
thread 'define_then_call_function' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- int_array stdout ----
thread 'int_array' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- define_then_call_macro stdout ----
thread 'define_then_call_macro' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- code_completion stdout ----
thread 'code_completion' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- invalid_code stdout ----
thread 'invalid_code' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- missing_semicolon_on_let_stmt stdout ----
thread 'missing_semicolon_on_let_stmt' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- multiple_identical_use_statements stdout ----
thread 'multiple_identical_use_statements' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- non_concrete_types stdout ----
thread 'non_concrete_types' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- non_semi_statements stdout ----
thread 'non_semi_statements' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- moved_value stdout ----
thread 'moved_value' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- partial_destructuring stdout ----
thread 'partial_destructuring' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- question_mark_operator stdout ----
thread 'question_mark_operator' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- partially_inferred_variable_type stdout ----
thread 'partially_inferred_variable_type' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- print_then_assign_variable stdout ----
thread 'print_then_assign_variable' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- rc_refcell_etc stdout ----
thread 'rc_refcell_etc' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- redefine_type_with_existing_var stdout ----
thread 'redefine_type_with_existing_var' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- reserved_words stdout ----
thread 'reserved_words' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- save_and_restore_variables stdout ----
thread 'save_and_restore_variables' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- single_statement stdout ----
thread 'single_statement' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- statement_and_expression stdout ----
thread 'statement_and_expression' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- repeated_use_statements stdout ----
thread 'repeated_use_statements' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- struct_type_inference stdout ----
thread 'struct_type_inference' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- tls_implementing_drop stdout ----
thread 'tls_implementing_drop' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- unnamable_type_closure stdout ----
thread 'unnamable_type_closure' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- unnamable_type_impl_trait stdout ----
thread 'unnamable_type_impl_trait' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- variable_assignment_compile_fail_then_use_statement stdout ----
thread 'variable_assignment_compile_fail_then_use_statement' panicked at 'called Result::unwrap() on an Err value: PoisonError { .. }', evcxr/tests/integration_tests.rs:118:37

---- crate_deps stdout ----
thread 'crate_deps' panicked at 'called Result::unwrap() on an Err value: ChildProcessTerminated("Child process terminated with status: signal: 9")', evcxr/src/eval_context.rs:256:18

---- printing stdout ----
thread 'printing' panicked at 'called Result::unwrap() on an Err value: ChildProcessTerminated("Child process terminated with status: signal: 9")', evcxr/src/eval_context.rs:256:18

---- function_panics_without_variable_preserving stdout ----
thread 'function_panics_without_variable_preserving' panicked at 'called Result::unwrap() on an Err value: ChildProcessTerminated("Child process terminated with status: signal: 9")', evcxr/src/eval_context.rs:256:18

---- function_panics_with_variable_preserving stdout ----
thread 'function_panics_with_variable_preserving' panicked at 'called Result::unwrap() on an Err value: ChildProcessTerminated("Child process terminated with status: signal: 9")', evcxr/src/eval_context.rs:256:18

failures:
abort_and_restart
check_for_errors
code_completion
const_generics_with_explicit_type
continue_execution_after_bad_use_statement
crate_deps
crate_name_with_hyphens
define_then_call_function
define_then_call_macro
error_from_macro_expansion
format
function_panics_with_variable_preserving
function_panics_without_variable_preserving
int_array
invalid_code
missing_semicolon_on_let_stmt
moved_value
multiple_identical_use_statements
non_concrete_types
non_semi_statements
partial_destructuring
partially_inferred_variable_type
print_then_assign_variable
printing
question_mark_operator
rc_refcell_etc
redefine_type_with_existing_var
repeated_use_statements
reserved_words
save_and_restore_variables
single_statement
statement_and_expression
struct_type_inference
tls_implementing_drop
unnamable_type_closure
unnamable_type_impl_trait
variable_assignment_compile_fail_then_use_statement

test result: FAILED. 0 passed; 37 failed; 0 ignored; 0 measured; 0 filtered out; finished in 5.17s

error: test failed, to rerun pass '-p evcxr --test integration_tests'`

[davidlattimore]

Thanks for trying that. It looks like they're failing in the same way as when you run the evcxr repl - child process gets sent signal 9, which I assume is a SIGKILL like it is on Linux. Did anything in the issue that sigmaSd linked above seem like it might be relevant? In particular the last post on that issue:

This problem drove me nuts. The underlying issue was that I was running a shell from homebrew (bash), which was running under emulation, and confusing the architecture detection of everything that was running underneath.

arch -arm64e sh and going back to the default shells fixed this.

[phil-markarian]

Thanks for trying that. It looks like they're failing in the same way as when you run the evcxr repl - child process gets sent signal 9, which I assume is a SIGKILL like it is on Linux. Did anything in the issue that sigmaSd linked above seem like it might be relevant? In particular the last post on that issue:

This problem drove me nuts. The underlying issue was that I was running a shell from homebrew (bash), which was running under emulation, and confusing the architecture detection of everything that was running underneath.
arch -arm64e sh and going back to the default shells fixed this.

So I uninstalled rust and rustup with homebrew and installed the normal way. After reinstalling the normal way and downloading evcxr everything seemed to run perfectly. Thanks.

[macintacos]

This probably needs to be reopened - I installed Rust via "normal" means (not using Homebrew) and am getting this exact error. Trying to use a "default" shell still results in the same problem (I use Fish, but it doesn't seem to matter).

I cloned the repository and ran cargo test and got the same exact results as from this comment.

$ rustc --version
rustc 1.59.0

[davidlattimore]

@macintacos, if you run arch -arm64e sh then run evcxr from the resulting shell, does that make any difference?

[macintacos]

@davidlattimore nope, unfortunately it does not.