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py-spy failed to preview strings containing multi-byte unicode rune.
thread 'main' panicked at src/python_data_access.rs:413:40:
byte index 123 is not a char boundary; it is inside '试' (bytes 122..125) of `测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测试1测`[...]
stack backtrace:
0: 0x7f5c50540075 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h358afad87e02ca76
1: 0x7f5c5057a77b - core::fmt::write::hb19b5b269a2fe458
2: 0x7f5c5053d45f - std::io::Write::write_fmt::he5a92676a45ef09d
3: 0x7f5c505411c1 - std::panicking::default_hook::{{closure}}::h3bff550b24d93725
4: 0x7f5c50540e9c - std::panicking::default_hook::hd53b1b06d2b99687
5: 0x7f5c50541821 - std::panicking::rust_panic_with_hook::h9fdd87cddb2763da
6: 0x7f5c50541687 - std::panicking::begin_panic_handler::{{closure}}::h089783ab6b5cba45
7: 0x7f5c50540539 - std::sys::backtrace::__rust_end_short_backtrace::hed34776d77ef7922
8: 0x7f5c50541314 - rust_begin_unwind
9: 0x7f5c5018a453 - core::panicking::panic_fmt::h300583f35f37447a
10: 0x7f5c5057de8a - core::str::slice_error_fail_rt::hc772242c91d296b2
11: 0x7f5c5018ab5a - core::str::slice_error_fail::h5aa2312cff950e4e
12: 0x7f5c5019d370 - py_spy::python_data_access::format_variable::hc0b51a96212725e8
13: 0x7f5c50221ad5 - py_spy::python_spy::PythonSpy::get_stack_traces::he097640af52b1cd3
14: 0x7f5c501edc7d - py_spy::dump::print_traces::hbbd519be498666cd
15: 0x7f5c5029f55f - py_spy::run_spy_command::h03dd3ae83f79b8f1
16: 0x7f5c502a29ae - py_spy::main::h1d83dfa3c485e787
17: 0x7f5c501e36e3 - std::sys::backtrace::__rust_begin_short_backtrace::haedd4627941893a7
18: 0x7f5c5027e909 - std::rt::lang_start::{{closure}}::h92ff100211e3319f
19: 0x7f5c50535d07 - std::rt::lang_start_internal::h93b3b742566fb30c
20: 0x7f5c502a38e5 - main
Related code: https://github.com/benfred/py-spy/blob/1fa3a6ded252d7c1c0ff974a4fcd1af67a1577cf/src/python_data_access.rs#L413C5-L413C70
Steps to reproduce the error:
Source code to inspect:
# test.py
import time
def k():
val='测试1'*500
time.sleep(120)
k()run:
#!/bin/bash
python test.py &
sleep 1
py-spy dump -p $(jobs -p) -l
kill $(jobs -p)Metadata
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