Tests fail when cross compiling aarch64 on x86_64 on NixOS

[dantefromhell]

I'm failing to cross-compile jujutsu for aarch64 on a x86_64 machine using NixOS and the upstream flake:

nix build 'github:martinvonz/jj?rev=e1936a2#packages.aarch64-linux.jujutsu'
error: builder for '/nix/store/9nrjipwxq6bsq1jyxnflqayyxv1hpjh0-jujutsu-unstable-dirty.drv' failed with exit code 100;
       last 25 log lines:
       >   33:     0x7fffeeb8dc58 - std::panicking::try::hbc414f54380db951
       >                                at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panicking.rs:520:19
       >   34:     0x7fffeeb8dc58 - std::panic::catch_unwind::h9d26a0b8ac8d5d69
       >                                at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panic.rs:358:14
       >   35:     0x7fffeeb8dc58 - std::thread::Builder::spawn_unchecked_::{{closure}}::heed44ec63304ed81
       >                                at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/thread/mod.rs:559:30
       >   36:     0x7fffeeb8dc58 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h07f2f78cb14f4ce9
       >                                at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/core/src/ops/function.rs:250:5
       >   37:     0x7fffef129988 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h9d44c7b2bf9d1ed0
       >                                at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/alloc/src/boxed.rs:1972:9
       >   38:     0x7fffef129988 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h482fb1c0d58be8d1
       >                                at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/alloc/src/boxed.rs:1972:9
       >   39:     0x7fffef129988 - std::sys::pal::unix::thread::Thread::new::thread_start::h393bc63fa6e3fccf
       >                                at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/sys/pal/unix/thread.rs:105:17
       >   40:     0x7fffed1186bc - start_thread
       >   41:     0x7fffed1849dc - thread_start
       >      Summary [ 262.972s] 317/1559 tests run: 315 passed, 2 failed, 0 skippedd, 0 skipped
       >         FAIL [  20.968s] jj-cli::runner test_describe_command::test_describe
       >         FAIL [  12.614s] jj-cli::runner test_diff_command::test_diff_external_tool
       For full logs, run 'nix log /nix/store/9nrjipwxq6bsq1jyxnflqayyxv1hpjh0-jujutsu-unstable-dirty.drv'.s)

with

[SNIP]
     Running [ 00:04:10] [>   ]  307/1559: 8 running, 307 passed, 0 skipped     ^M     Running [ 00:04:10] [>   ]  307/1559: 8 running, 307 passed, 0 skipped     ^M     Running [ 00:04:10] [>   ]  307/1559: 7 running, 308 passed, 0 skipped     ^M  >

--- STDOUT:              jj-cli::runner test_describe_command::test_describe ---

running 1 test
test test_describe_command::test_describe ... FAILED

failures:

failures:
    test_describe_command::test_describe

test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 671 filtered out; finished in 20.71s


--- STDERR:              jj-cli::runner test_describe_command::test_describe ---
thread 'test_describe_command::test_describe' panicked at cli/tests/test_describe_command.rs:151:5:
assertion failed: get_stderr_string(&assert).contains("Failed to run")
stack backtrace:
   0:     0x7fffef12108c - std::backtrace_rs::backtrace::libunwind::trace::hd4441147ad31fe3a
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
   1:     0x7fffef12108c - std::backtrace_rs::backtrace::trace_unsynchronized::h2443696779422565
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7fffef12108c - std::sys::backtrace::_print_fmt::hbc8d56e63be257c7
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/sys/backtrace.rs:66:9
   3:     0x7fffef12108c - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hc2a73f2aad321855
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/sys/backtrace.rs:39:26
   4:     0x7fffef14a480 - core::fmt::rt::Argument::fmt::h722713f1954e793c
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/core/src/fmt/rt.rs:177:76
   5:     0x7fffef14a480 - core::fmt::write::h554dba245e5dc5bd
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/core/src/fmt/mod.rs:1189:21
   6:     0x7fffef11b8c0 - std::io::Write::write_fmt::h9edbcb1d9b9a5e13
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/io/mod.rs:1884:15
   7:     0x7fffef120f40 - std::sys::backtrace::BacktraceLock::print::h7ad8d7745c1c6561
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/sys/backtrace.rs:42:9
   8:     0x7fffef1228e0 - std::panicking::default_hook::{{closure}}::h851635cfc56dad17
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panicking.rs:268:22
   9:     0x7fffef122728 - std::panicking::default_hook::h5b11cccd5dad8e03
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panicking.rs:295:9
  10:     0x7fffef122fb8 - std::panicking::rust_panic_with_hook::h35f4653dd3c3481c
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panicking.rs:801:13
  11:     0x7fffef122de4 - std::panicking::begin_panic_handler::{{closure}}::he8d5999e8ae3c65f
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panicking.rs:667:13
  12:     0x7fffef121588 - std::sys::backtrace::__rust_end_short_backtrace::hface73700a7556a3
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/sys/backtrace.rs:170:18
  13:     0x7fffef122acc - rust_begin_unwind
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panicking.rs:665:5
  14:     0x7fffef147f94 - core::panicking::panic_fmt::h626afeaa005658e6
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/core/src/panicking.rs:76:14
  15:     0x7fffef148004 - core::panicking::panic::h0c1cf9f35de0e558
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/core/src/panicking.rs:148:5
  16:     0x7fffeead80f4 - runner::test_describe_command::test_describe::he25f9b80b21643c8
  17:     0x7fffee952f3c - core::ops::function::FnOnce::call_once::h1bf1e6c9806d23d0
  18:     0x7fffeebbd334 - core::ops::function::FnOnce::call_once::h24df243e07a05cd0
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/core/src/ops/function.rs:250:5
  19:     0x7fffeebbd334 - test::__rust_begin_short_backtrace::h64c5f4c9d40f24e4
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/test/src/lib.rs:632:18
  20:     0x7fffeebbcd30 - test::run_test_in_process::{{closure}}::he4f67ad70f5e70c0
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/test/src/lib.rs:655:60
  21:     0x7fffeebbcd30 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h498eafbe2c729ae6
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/core/src/panic/unwind_safe.rs:272:9
  22:     0x7fffeebbcd30 - std::panicking::try::do_call::h3eeb4a1f82e735a2
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panicking.rs:557:40
  23:     0x7fffeebbcd30 - std::panicking::try::h70d742f94e7bb627
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panicking.rs:520:19
  24:     0x7fffeebbcd30 - std::panic::catch_unwind::h8df26d57ddcb3ea5
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panic.rs:358:14
  25:     0x7fffeebbcd30 - test::run_test_in_process::h0ccf24975a0b38e8
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/test/src/lib.rs:655:27
  26:     0x7fffeebbcd30 - test::run_test::{{closure}}::h1047348a1156d8d7
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/test/src/lib.rs:576:43
  27:     0x7fffeeb8a798 - test::run_test::{{closure}}::hd125d5eb312060ec
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/test/src/lib.rs:606:41
  28:     0x7fffeeb8a798 - std::sys::backtrace::__rust_begin_short_backtrace::ha341ed394d617bab
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/sys/backtrace.rs:154:18
  29:     0x7fffeeb8dc58 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h28cf138e6967e24e
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/thread/mod.rs:561:17
  30:     0x7fffeeb8dc58 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd5f31066e67982f0
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/core/src/panic/unwind_safe.rs:272:9
  31:     0x7fffeeb8dc58 - std::panicking::try::do_call::h3f4b3f7cb12e129f
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panicking.rs:557:40
  32:     0x7fffeeb8dc58 - std::panicking::try::hbc414f54380db951
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panicking.rs:520:19
  33:     0x7fffeeb8dc58 - std::panic::catch_unwind::h9d26a0b8ac8d5d69
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panic.rs:358:14
  34:     0x7fffeeb8dc58 - std::thread::Builder::spawn_unchecked_::{{closure}}::heed44ec63304ed81
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/thread/mod.rs:559:30
  35:     0x7fffeeb8dc58 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h07f2f78cb14f4ce9
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/core/src/ops/function.rs:250:5
  36:     0x7fffef129988 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h9d44c7b2bf9d1ed0
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/alloc/src/boxed.rs:1972:9
  37:     0x7fffef129988 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h482fb1c0d58be8d1
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/alloc/src/boxed.rs:1972:9
  38:     0x7fffef129988 - std::sys::pal::unix::thread::Thread::new::thread_start::h393bc63fa6e3fccf
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/sys/pal/unix/thread.rs:105:17
  39:     0x7fffed1186bc - start_thread
  40:     0x7fffed1849dc - thread_start
  41:                0x0 - <unknown>

     Running [ 00:04:12] [>   ]  308/1559: 8 running, 308 passed, 0 skipped     ^M     Running [ 00:04:12] [>   ]  308/1559: 8 running, 308 passed, 0 skipped     ^M     Running [ 00:04:12] []  308/1559: 7 running, 308 passed, 1 failed, 0 skipped   >
     Running [ 00:04:12] []  309/1559: 7 running, 308 passed, 1 failed, 0 skipped     ^M^M   Canceling [ 00:04:12] []  309/1559: 7 running, 308 passed, 1 failed, 0 skipped     ^M^M   Canceling [ 00:04:12] []  309/1559: 7 running, 308 passed, 1 fail>
   Canceling [ 00:04:12] []  309/1559: 8 running, 308 passed, 1 failed, 0 skipped     ^M^M   Canceling [ 00:04:12] []  309/1559: 8 running, 308 passed, 1 failed, 0 skipped     ^M^M   Canceling [ 00:04:12] []  309/1559: 7 running, 309 passed, 1 fail>
   Canceling [ 00:04:15] []  310/1559: 7 running, 309 passed, 1 failed, 0 skipped     ^M^M   Canceling [ 00:04:15] []  310/1559: 7 running, 309 passed, 1 failed, 0 skipped     ^M^M   Canceling [ 00:04:15] []  310/1559: 6 running, 310 passed, 1 fail>
   Canceling [ 00:04:15] []  311/1559: 6 running, 310 passed, 1 failed, 0 skipped     ^M^M   Canceling [ 00:04:15] []  311/1559: 6 running, 310 passed, 1 failed, 0 skipped     ^M^M   Canceling [ 00:04:15] []  311/1559: 5 running, 311 passed, 1 fail>
   Canceling [ 00:04:17] []  312/1559: 5 running, 311 passed, 1 failed, 0 skipped     ^M^M   Canceling [ 00:04:17] []  312/1559: 5 running, 311 passed, 1 failed, 0 skipped     ^M^M   Canceling [ 00:04:17] []  312/1559: 4 running, 312 passed, 1 fail>
   Canceling [ 00:04:18] []  313/1559: 4 running, 312 passed, 1 failed, 0 skipped     ^M^M   Canceling [ 00:04:18] []  313/1559: 4 running, 312 passed, 1 failed, 0 skipped     ^M^M   Canceling [ 00:04:18] []  313/1559: 3 running, 313 passed, 1 fail>
   Canceling [ 00:04:18] []  314/1559: 3 running, 313 passed, 1 failed, 0 skipped     ^M^M   Canceling [ 00:04:18] []  314/1559: 3 running, 313 passed, 1 failed, 0 skipped     ^M^M   Canceling [ 00:04:18] []  314/1559: 2 running, 314 passed, 1 fail>

--- STDOUT:              jj-cli::runner test_diff_command::test_diff_external_tool ---

running 1 test
test test_diff_command::test_diff_external_tool ... FAILED

failures:

failures:
    test_diff_command::test_diff_external_tool

test result: FAILED. 0 passed; 1 failed; 0 ignored; 0 measured; 671 filtered out; finished in 12.22s


--- STDERR:              jj-cli::runner test_diff_command::test_diff_external_tool ---
thread 'test_diff_command::test_diff_external_tool' panicked at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/core/src/ops/function.rs:250:5:
Unexpected return code, failed var == 1
└── var: 0

command=`cd "/build/jj-test-AfSYYe/repo" && env -i COLUMNS="100" DIFF_EDIT_SCRIPT="/build/jj-test-AfSYYe/diff_edit_script" HOME="/build/jj-test-AfSYYe/home" JJ_CONFIG="/build/jj-test-AfSYYe/config" JJ_EMAIL="[email protected]" JJ_OP_HOSTNAME="h>
code=0
stdout=""
stderr="Warning: Tool exited with exit status: 127 (run with --debug to see the exact invocation)\n"

stack backtrace:
   0:     0x7fffef12108c - std::backtrace_rs::backtrace::libunwind::trace::hd4441147ad31fe3a
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5
   1:     0x7fffef12108c - std::backtrace_rs::backtrace::trace_unsynchronized::h2443696779422565
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x7fffef12108c - std::sys::backtrace::_print_fmt::hbc8d56e63be257c7
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/sys/backtrace.rs:66:9
   3:     0x7fffef12108c - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hc2a73f2aad321855
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/sys/backtrace.rs:39:26
   4:     0x7fffef14a480 - core::fmt::rt::Argument::fmt::h722713f1954e793c
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/core/src/fmt/rt.rs:177:76
   5:     0x7fffef14a480 - core::fmt::write::h554dba245e5dc5bd
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/core/src/fmt/mod.rs:1189:21
   6:     0x7fffef11b8c0 - std::io::Write::write_fmt::h9edbcb1d9b9a5e13
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/io/mod.rs:1884:15
   7:     0x7fffef120f40 - std::sys::backtrace::BacktraceLock::print::h7ad8d7745c1c6561
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/sys/backtrace.rs:42:9
   8:     0x7fffef1228e0 - std::panicking::default_hook::{{closure}}::h851635cfc56dad17
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panicking.rs:268:22
   9:     0x7fffef122728 - std::panicking::default_hook::h5b11cccd5dad8e03
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panicking.rs:295:9
  10:     0x7fffef122fb8 - std::panicking::rust_panic_with_hook::h35f4653dd3c3481c
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panicking.rs:801:13
  11:     0x7fffef122e0c - std::panicking::begin_panic_handler::{{closure}}::he8d5999e8ae3c65f
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panicking.rs:674:13
  12:     0x7fffef121588 - std::sys::backtrace::__rust_end_short_backtrace::hface73700a7556a3
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/sys/backtrace.rs:170:18
  13:     0x7fffef122acc - rust_begin_unwind
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panicking.rs:665:5
  14:     0x7fffef147f94 - core::panicking::panic_fmt::h626afeaa005658e6
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/core/src/panicking.rs:76:14
  15:     0x7fffee92c864 - assert_cmd::assert::AssertError::panic::panic_cold_display::ha77f31acc6cf0742
  16:     0x7fffeea589a8 - core::ops::function::FnOnce::call_once::hd576b1c007b87fa7
  17:     0x7fffeeaae404 - runner::common::TestEnvironment::jj_cmd_failure::ha4c8c9a3f1c43d72
  18:     0x7fffeea597d8 - core::ops::function::FnOnce::call_once::hd5e9b9e1cf464cb6
  19:     0x7fffeebbd334 - core::ops::function::FnOnce::call_once::h24df243e07a05cd0
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/core/src/ops/function.rs:250:5
  20:     0x7fffeebbd334 - test::__rust_begin_short_backtrace::h64c5f4c9d40f24e4
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/test/src/lib.rs:632:18
  21:     0x7fffeebbcd30 - test::run_test_in_process::{{closure}}::he4f67ad70f5e70c0
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/test/src/lib.rs:655:60
  22:     0x7fffeebbcd30 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h498eafbe2c729ae6
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/core/src/panic/unwind_safe.rs:272:9
  23:     0x7fffeebbcd30 - std::panicking::try::do_call::h3eeb4a1f82e735a2
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panicking.rs:557:40
  24:     0x7fffeebbcd30 - std::panicking::try::h70d742f94e7bb627
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panicking.rs:520:19
  25:     0x7fffeebbcd30 - std::panic::catch_unwind::h8df26d57ddcb3ea5
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panic.rs:358:14
  26:     0x7fffeebbcd30 - test::run_test_in_process::h0ccf24975a0b38e8
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/test/src/lib.rs:655:27
  27:     0x7fffeebbcd30 - test::run_test::{{closure}}::h1047348a1156d8d7
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/test/src/lib.rs:576:43
  28:     0x7fffeeb8a798 - test::run_test::{{closure}}::hd125d5eb312060ec
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/test/src/lib.rs:606:41
  29:     0x7fffeeb8a798 - std::sys::backtrace::__rust_begin_short_backtrace::ha341ed394d617bab
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/sys/backtrace.rs:154:18
  30:     0x7fffeeb8dc58 - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::h28cf138e6967e24e
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/thread/mod.rs:561:17
  31:     0x7fffeeb8dc58 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hd5f31066e67982f0
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/core/src/panic/unwind_safe.rs:272:9
  32:     0x7fffeeb8dc58 - std::panicking::try::do_call::h3f4b3f7cb12e129f
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panicking.rs:557:40
  33:     0x7fffeeb8dc58 - std::panicking::try::hbc414f54380db951
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panicking.rs:520:19
  34:     0x7fffeeb8dc58 - std::panic::catch_unwind::h9d26a0b8ac8d5d69
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/panic.rs:358:14
  35:     0x7fffeeb8dc58 - std::thread::Builder::spawn_unchecked_::{{closure}}::heed44ec63304ed81
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/thread/mod.rs:559:30
  36:     0x7fffeeb8dc58 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h07f2f78cb14f4ce9
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/core/src/ops/function.rs:250:5
  37:     0x7fffef129988 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h9d44c7b2bf9d1ed0
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/alloc/src/boxed.rs:1972:9
  38:     0x7fffef129988 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h482fb1c0d58be8d1
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/alloc/src/boxed.rs:1972:9
  39:     0x7fffef129988 - std::sys::pal::unix::thread::Thread::new::thread_start::h393bc63fa6e3fccf
                               at /rustc/b19329a37cedf2027517ae22c87cf201f93d776e/library/std/src/sys/pal/unix/thread.rs:105:17
  40:     0x7fffed1186bc - start_thread
  41:     0x7fffed1849dc - thread_start
  42:                0x0 - <unknown>

   Canceling [ 00:04:22] []  315/1559: 2 running, 314 passed, 1 failed, 0 skipped     ^M^M   Canceling [ 00:04:22] []  315/1559: 2 running, 314 passed, 1 failed, 0 skipped     ^M^M   Canceling [ 00:04:22] []  315/1559: 1 running, 314 passed, 2 fail>
   Canceling [ 00:04:22] []  316/1559: 1 running, 314 passed, 2 failed, 0 skipped     ^M^M   Canceling [ 00:04:22] []  316/1559: 1 running, 314 passed, 2 failed, 0 skipped     ^M^M   Canceling [ 00:04:22] []  316/1559: 0 running, 315 passed, 2 fail>
     Summary [ 262.972s] 317/1559 tests run: 315 passed, 2 failed, 0 skipped
        FAIL [  20.968s] jj-cli::runner test_describe_command::test_describe
        FAIL [  12.614s] jj-cli::runner test_diff_command::test_diff_external_tool
warning: 1242/1559 tests were not run due to test failure (run with --no-fail-fast to run all tests)
   Canceling [ 00:04:22] []  317/1559: 0 running, 315 passed, 2 failed, 0 skipped     ^M^Merror: test run failed

Disabling the test using packages.aarch64-linux.jujutsu.overrideAttrs { doCheck = false; } works.

Not sure if this is NixOS cross-compile or a jj issue though.

Any help is appreciated.

[yuja]

I don't know about Nix, but I don't think our CLI tests can run without setting up qemu or something. They test the jj executable, which is probably built for the target arch?

Do the other CLI tests work?

[dantefromhell]

My cross-compiling setup actually uses qemu-aarch64 to execute compiler and from what I understand tests too (not verified manually but I can do).

According to nix log all tests <308 succeed.

[yuja]

Ok, the tests appear to failing at executing binaries from jj (such as fake-diff-editor), but I have no idea why.