Crash: Send should not fail: SendError(..)

[TheSlackOne]

After syncing for a while I get the following crash:

$ cargo run --release --bin bitcoin-indexer
....
Block 148000H: 15fab4fea3bc1ce8e2b3bde4196c5b93a7005ab6de92a07347231df11693c975
Block 149000H: 63764d310fa13832501d5b0f1bd330b848d39775d70863528b42322f44f84348
Block 150000H: a3713b98f2d05246f2c1f022fc68e1f41eca08145be6ec3a64b74a671b54e5bd
Block 151000H: 0cb9ffcce95652e5751cdd4b62bfde13a2032792cdf89d7bcbcd9a797a61ac5f
thread 'main' panicked at 'Send should not fail: "SendError(..)"', src/db/pg.rs:1338:14
thread 'main' panicked at 'Couldn't join on thread: Any { .. }', src/db/pg.rs:1109:18
stack backtrace:
0: 0x559869c919a0 - std::backtrace_rs::backtrace::libunwind::trace::ha0ad43e8a952bfe7
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
1: 0x559869c919a0 - std::backtrace_rs::backtrace::trace_unsynchronized::h6830419c0c4130dc
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
2: 0x559869c919a0 - std::sys_common::backtrace::_print_fmt::h8f3516631ffa1ef5
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:67:5
3: 0x559869c919a0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::he1640d5f0d93f618
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:46:22
4: 0x559869cb353c - core::fmt::write::h88012e1f01caeebf
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/fmt/mod.rs:1115:17
5: 0x559869c8cff5 - std::io::Write::write_fmt::h360fa85b30182555
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/io/mod.rs:1665:15
6: 0x559869c93a5b - std::sys_common::backtrace::_print::ha1f00492f406a015
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:49:5
7: 0x559869c93a5b - std::sys_common::backtrace::print::hd54561b13feb6af3
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:36:9
8: 0x559869c93a5b - std::panicking::default_hook::{{closure}}::h84fe124cd0864662
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:208:50
9: 0x559869c93531 - std::panicking::default_hook::h5a8e74a76ce290a7
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:225:9
10: 0x559869c94124 - std::panicking::rust_panic_with_hook::h67c812a4fe9d4c91
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:622:17
11: 0x559869c93c07 - std::panicking::begin_panic_handler::{{closure}}::h33f9c1b96af300d7
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:519:13
12: 0x559869c91e9c - std::sys_common::backtrace::__rust_end_short_backtrace::h51bae64be5921f0e
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/sys_common/backtrace.rs:141:18
13: 0x559869c93b69 - rust_begin_unwind
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:515:5
14: 0x559869a1e241 - core::panicking::panic_fmt::h12a3a3c256485fca
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/panicking.rs:92:14
15: 0x559869a1e333 - core::result::unwrap_failed::h2d8d0952e3250de9
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/result.rs:1599:5
16: 0x559869ad5d68 - <bitcoin_indexer::db::pg::AsyncBlockInsertWorker as core::ops::drop::Drop>::drop::h728e549bf3a75c3a
17: 0x559869ad0b1c - core::ptr::drop_in_place<core::option::Option<bitcoin_indexer::db::pg::AsyncBlockInsertWorker>>::h057563b2348cd0db
18: 0x559869ad728b - bitcoin_indexer::db::pg::IndexerStore::stop_workers::h59577b2b32e0e5d4
19: 0x559869a2ad5e - core::ptr::drop_in_place<bitcoin_indexer::db::pg::IndexerStore>::h7e6791489810616f
20: 0x559869a2a4b3 - core::ptr::drop_in_place<bitcoin_indexer::Indexer>::h480fc1fcd6d63aed
21: 0x559869a2d823 - bitcoin_indexer::main::h2e9aa7182fd27883
22: 0x559869a4ca33 - std::sys_common::backtrace::__rust_begin_short_backtrace::ha533a456d10dd549
23: 0x559869a4cae9 - std::rt::lang_start::{{closure}}::h970b6bd182e7c5ce
24: 0x559869c9472a - core::ops::function::impls::<impl core::ops::function::FnOnce for &F>::call_once::ha9408abe89f69dc4
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/core/src/ops/function.rs:259:13
25: 0x559869c9472a - std::panicking::try::do_call::h5b0cc9e9102acb65
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:401:40
26: 0x559869c9472a - std::panicking::try::hddc7f8229138b3ba
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:365:19
27: 0x559869c9472a - std::panic::catch_unwind::hfa401ff8bab2986e
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panic.rs:434:14
28: 0x559869c9472a - std::rt::lang_start_internal::{{closure}}::h8163422320d11405
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/rt.rs:45:48
29: 0x559869c9472a - std::panicking::try::do_call::hc742cc7bb4f0fb20
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:401:40
30: 0x559869c9472a - std::panicking::try::ha37d8d2dd1acf7d3
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panicking.rs:365:19
31: 0x559869c9472a - std::panic::catch_unwind::h8a5381d5ecf437bc
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/panic.rs:434:14
32: 0x559869c9472a - std::rt::lang_start_internal::h7e2cee8c90d4a4d3
at /rustc/c8dfcfe046a7680554bf4eb612bad840e7631c4b/library/std/src/rt.rs:45:20
33: 0x559869a2d852 - main
34: 0x7f3fa84e113a - __libc_start_main
35: 0x559869a1ea1a - _start
36: 0x0 -
thread panicked while panicking. aborting.
Illegal instruction

$ cargo --version
cargo 1.55.0 (32da73ab1 2021-08-23)

$ rustc -V
rustc 1.55.0 (c8dfcfe04 2021-09-06)