cargo hf2 panics

[turbinenreiter]

I am trying to flash a Feather M4 Express and it fails with this error message (I also enabled the backtrace):

RUST_LOG=debug cargo hf2 --release --bin blinky_basic
 DEBUG cargo_project > Project::query(path=/home/plam/Projects/rust-probe-renode-example/knurling-example): root=/home/plam/Projects/rust-probe-renode-example/knurling-example
 DEBUG cargo_project > workspace search: cwd=/home/plam/Projects/rust-probe-renode-example
    Finished release [optimized + debuginfo] target(s) in 0.02s
    Searching for a connected device with known vid/pid pair.
    Trying  Ok(Some("Adafruit Industries")) Ok(Some("Feather M4 Express"))
    Flashing "/home/plam/Projects/rust-probe-renode-example/knurling-example/target/release/blinky_basic"
thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: File', /home/plam/.cargo/registry/src/github.com-1ecc6299db9ec823/cargo-hf2-0.3.1/src/main.rs:110:46
stack backtrace:
   0:     0x5655551290a0 - std::backtrace_rs::backtrace::libunwind::trace::h25e12e0d899beba0
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
   1:     0x5655551290a0 - std::backtrace_rs::backtrace::trace_unsynchronized::h70e61195d6ae3df6
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
   2:     0x5655551290a0 - std::sys_common::backtrace::_print_fmt::hba93ab80d779695a
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/sys_common/backtrace.rs:67:5
   3:     0x5655551290a0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf092b5883b4b2e50
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/sys_common/backtrace.rs:46:22
   4:     0x56555514b7dc - core::fmt::write::hf68bc350a8f2f0dc
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/core/src/fmt/mod.rs:1078:17
   5:     0x565555124ce2 - std::io::Write::write_fmt::hf66811b1bc767436
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/io/mod.rs:1517:15
   6:     0x56555512b065 - std::sys_common::backtrace::_print::hd425a11bfe1f20f8
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/sys_common/backtrace.rs:49:5
   7:     0x56555512b065 - std::sys_common::backtrace::print::h6d678795c1e61e13
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/sys_common/backtrace.rs:36:9
   8:     0x56555512b065 - std::panicking::default_hook::{{closure}}::h78a02a4a0dee5e7e
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/panicking.rs:208:50
   9:     0x56555512abba - std::panicking::default_hook::h56eb7eda02f355a7
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/panicking.rs:225:9
  10:     0x56555512b801 - std::panicking::rust_panic_with_hook::hb27ea14285131c61
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/panicking.rs:591:17
  11:     0x56555512b347 - std::panicking::begin_panic_handler::{{closure}}::hc552fcee62aad17f
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/panicking.rs:497:13
  12:     0x56555512955c - std::sys_common::backtrace::__rust_end_short_backtrace::hb9f0aa9a78e885a0
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/sys_common/backtrace.rs:141:18
  13:     0x56555512b2a9 - rust_begin_unwind
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/panicking.rs:493:5
  14:     0x5655551497a1 - core::panicking::panic_fmt::h12ac4570ea43d06f
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/core/src/panicking.rs:92:14
  15:     0x5655551495c3 - core::option::expect_none_failed::h096fa60f757b7204
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/core/src/option.rs:1268:5
  16:     0x565554fe7e59 - cargo_hf2::main::h81234f6f0c65b6e3
  17:     0x565554fcdf53 - std::sys_common::backtrace::__rust_begin_short_backtrace::h4d0bd98f68959c70
  18:     0x565554fcdf69 - std::rt::lang_start::{{closure}}::h82386a2f9aa02718
  19:     0x56555512bc27 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h78040f802d89ccdc
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/core/src/ops/function.rs:259:13
  20:     0x56555512bc27 - std::panicking::try::do_call::h6853cad536dd09a1
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/panicking.rs:379:40
  21:     0x56555512bc27 - std::panicking::try::h827495f03a9fbb9a
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/panicking.rs:343:19
  22:     0x56555512bc27 - std::panic::catch_unwind::h4bdf17571090eb17
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/panic.rs:396:14
  23:     0x56555512bc27 - std::rt::lang_start_internal::h2f319c33bb013f29
                               at /rustc/cb75ad5db02783e8b0222fee363c5f63f7e2cf5b/library/std/src/rt.rs:51:25
  24:     0x565554fe85a2 - main
  25:     0x7f625a9791e2 - __libc_start_main
  26:     0x565554fbd4de - _start
  27:                0x0 - <unknown>

[jacobrosenthal]

Hrm, Im not sure on this one. No other reports have come in.

Are you still getting the error? What version are you using? Maybe a quick cargo install cargo-hf2 --force just to be sure?