[INFO] fetching crate keylist 0.2.0...
[INFO] testing keylist-0.2.0 against beta-2020-10-09 for beta-1.48-1
[INFO] extracting crate keylist 0.2.0 into /workspace/builds/worker-2/source
[INFO] validating manifest of crates.io crate keylist 0.2.0 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate keylist 0.2.0
[INFO] removed 0 missing examples
[INFO] finished tweaking crates.io crate keylist 0.2.0
[INFO] tweaked toml for crates.io crate keylist 0.2.0 written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate crates.io crate keylist 0.2.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded serde_json v1.0.53
[INFO] [stderr]   Downloaded serde_test v1.0.110
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6b2a19daa92e49315ee9d91298fd9ce6e174858a5c1a2522d3dceee4a2a63a59
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "6b2a19daa92e49315ee9d91298fd9ce6e174858a5c1a2522d3dceee4a2a63a59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6b2a19daa92e49315ee9d91298fd9ce6e174858a5c1a2522d3dceee4a2a63a59", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b2a19daa92e49315ee9d91298fd9ce6e174858a5c1a2522d3dceee4a2a63a59", kill_on_drop: false }`
[INFO] [stdout] 6b2a19daa92e49315ee9d91298fd9ce6e174858a5c1a2522d3dceee4a2a63a59
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] afaeffe6adf8faed43c0b9e93759d7ba1fee4dc7ae3ade807bd122c1e3b344e3
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "afaeffe6adf8faed43c0b9e93759d7ba1fee4dc7ae3ade807bd122c1e3b344e3", kill_on_drop: false }`
[INFO] [stderr]    Compiling keylist v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.25s
[INFO] running `Command { std: "docker" "inspect" "afaeffe6adf8faed43c0b9e93759d7ba1fee4dc7ae3ade807bd122c1e3b344e3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "afaeffe6adf8faed43c0b9e93759d7ba1fee4dc7ae3ade807bd122c1e3b344e3", kill_on_drop: false }`
[INFO] [stdout] afaeffe6adf8faed43c0b9e93759d7ba1fee4dc7ae3ade807bd122c1e3b344e3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] dd0b3f4cb71d521b35b2d93893639acf388c115f2e5bc4c41a70aaf4794c4e85
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "dd0b3f4cb71d521b35b2d93893639acf388c115f2e5bc4c41a70aaf4794c4e85", kill_on_drop: false }`
[INFO] [stderr]    Compiling serde_test v1.0.110
[INFO] [stderr]    Compiling keylist v0.2.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 3.32s
[INFO] running `Command { std: "docker" "inspect" "dd0b3f4cb71d521b35b2d93893639acf388c115f2e5bc4c41a70aaf4794c4e85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dd0b3f4cb71d521b35b2d93893639acf388c115f2e5bc4c41a70aaf4794c4e85", kill_on_drop: false }`
[INFO] [stdout] dd0b3f4cb71d521b35b2d93893639acf388c115f2e5bc4c41a70aaf4794c4e85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 97de32b98455b4638a86c716680d0c06cb80b8aef36fe054794fbc19da5c354c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "97de32b98455b4638a86c716680d0c06cb80b8aef36fe054794fbc19da5c354c", kill_on_drop: false }`
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/keylist-b10d9510e18edbd2
[INFO] [stdout] 
[INFO] [stdout] running 30 tests
[INFO] [stdout] test hash_keylist::tests::extend ... ok
[INFO] [stdout] test hash_keylist::tests::from ... ok
[INFO] [stdout] test hash_keylist::tests::get_all ... ok
[INFO] [stdout] test hash_keylist::tests::get_mut ... ok
[INFO] [stdout] test hash_keylist::tests::insert ... ok
[INFO] [stdout] test hash_keylist::tests::keys ... ok
[INFO] [stdout] test hash_keylist::tests::iter ... ok
[INFO] [stdout] test hash_keylist::tests::insert_2 ... ok
[INFO] [stdout] test hash_keylist::tests::len ... ok
[INFO] [stdout] test hash_keylist::tests::pop ... ok
[INFO] [stdout] test hash_keylist::tests::push ... ok
[INFO] [stdout] test hash_keylist::tests::multi ... ok
[INFO] [stdout] test hash_keylist::tests::is_empty ... ok
[INFO] [stdout] test hash_keylist::tests::sort_by_key ... ok
[INFO] [stdout] test hash_keylist::tests::sort ... ok
[INFO] [stdout] test hash_keylist::tests::remove_index ... ok
[INFO] [stdout] test hash_keylist::tests::remove_first ... ok
[INFO] [stdout] test hash_keylist::tests::get ... ok
[INFO] [stdout] test hash_keylist::tests::get_all_key_value ... ok
[INFO] [stdout] test hash_keylist::tests::into_iter ... ok
[INFO] [stdout] test vec_keylist::tests::get ... ok
[INFO] [stdout] test vec_keylist::tests::from_into_iterator ... ok
[INFO] [stdout] test hash_keylist::tests::values ... ok
[INFO] [stdout] test hash_keylist::tests::values_mut ... ok
[INFO] [stdout] test vec_keylist::tests::into_iter ... ok
[INFO] [stdout] test vec_keylist::tests::into_swapped ... ok
[INFO] [stdout] test vec_keylist::tests::get_sorted ... ok
[INFO] [stdout] test vec_keylist::tests::sort ... ok
[INFO] [stdout] test vec_keylist::tests::get_all ... ok
[INFO] [stdout] test hash_keylist::tests::remove_empty ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- hash_keylist::tests::remove_empty stdout ----
[INFO] [stdout] thread 'hash_keylist::tests::remove_empty' panicked at 'removal index (is 0) should be < len (is 0)', library/alloc/src/vec.rs:1066:13
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x55e20c48e680 - std::backtrace_rs::backtrace::libunwind::trace::h7cf3ca97bd83fbab
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stdout]    1:     0x55e20c48e680 - std::backtrace_rs::backtrace::trace_unsynchronized::h5a69c674b2d9ea5c
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stdout]    2:     0x55e20c48e680 - std::sys_common::backtrace::_print_fmt::hdf72478dfcb50678
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:79
[INFO] [stdout]    3:     0x55e20c48e680 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1e0bdbb35e83deca
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:58
[INFO] [stdout]    4:     0x55e20c4b0c4c - core::fmt::write::he67f9b17bcb7ee73
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/fmt/mod.rs:1080
[INFO] [stdout]    5:     0x55e20c43a146 - std::io::Write::write_fmt::h68b2e5fe4c78e61a
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/io/mod.rs:1516
[INFO] [stdout]    6:     0x55e20c488e9d - std::io::impls::<impl std::io::Write for alloc::boxed::Box<W>>::write_fmt::he9ebec865e28165c
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/io/impls.rs:179
[INFO] [stdout]    7:     0x55e20c490b9d - std::sys_common::backtrace::_print::haa20918e28a126c5
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:61
[INFO] [stdout]    8:     0x55e20c490b9d - std::sys_common::backtrace::print::h49e772a4873d9076
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:48
[INFO] [stdout]    9:     0x55e20c490b9d - std::panicking::default_hook::{{closure}}::hb218b305d15e3f11
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:208
[INFO] [stdout]   10:     0x55e20c4907f2 - std::panicking::default_hook::h63997b7b949e1ce0
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:224
[INFO] [stdout]   11:     0x55e20c491281 - std::panicking::rust_panic_with_hook::hb54f09ccadf64bd3
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:577
[INFO] [stdout]   12:     0x55e20c490e29 - std::panicking::begin_panic_handler::{{closure}}::h8b43445b254eeb30
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:484
[INFO] [stdout]   13:     0x55e20c48eb0c - std::sys_common::backtrace::__rust_end_short_backtrace::hacd691450edfeae0
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:153
[INFO] [stdout]   14:     0x55e20c490de9 - rust_begin_unwind
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:483
[INFO] [stdout]   15:     0x55e20c4af271 - core::panicking::panic_fmt::h5b17d4a0e853d0f5
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/panicking.rs:85
[INFO] [stdout]   16:     0x55e20c4ab236 - alloc::vec::Vec<T>::remove::assert_failed::h48dfb0e17af222a5
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/vec.rs:1066
[INFO] [stdout]   17:     0x55e20c3dc0bd - alloc::vec::Vec<T>::remove::h366d06b7e5648f9c
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/vec.rs:1071
[INFO] [stdout]   18:     0x55e20c42a569 - keylist::hash_keylist::HashKeylist<K,V,S>::remove::h3afd29fc6e4568ac
[INFO] [stdout]                                at /opt/rustwide/workdir/src/hash_keylist.rs:131
[INFO] [stdout]   19:     0x55e20c40a0c6 - keylist::hash_keylist::tests::remove_empty::h39280a24ddf6940b
[INFO] [stdout]                                at /opt/rustwide/workdir/src/hash_keylist.rs:609
[INFO] [stdout]   20:     0x55e20c40a08a - keylist::hash_keylist::tests::remove_empty::{{closure}}::h5f7e618fdbdc051e
[INFO] [stdout]                                at /opt/rustwide/workdir/src/hash_keylist.rs:607
[INFO] [stdout]   21:     0x55e20c3f33ce - core::ops::function::FnOnce::call_once::hddd75789d078fdab
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:227
[INFO] [stdout]   22:     0x55e20c460f33 - core::ops::function::FnOnce::call_once::hcd3fa2f0696c1015
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:227
[INFO] [stdout]   23:     0x55e20c460f33 - test::__rust_begin_short_backtrace::h113f97c5e5ab7d4a
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/test/src/lib.rs:516
[INFO] [stdout]   24:     0x55e20c45f438 - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h01fd09163cae2442
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/boxed.rs:1042
[INFO] [stdout]   25:     0x55e20c45f438 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h0da6b685ae74a04a
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:308
[INFO] [stdout]   26:     0x55e20c45f438 - std::panicking::try::do_call::h564a32f132f2c264
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:381
[INFO] [stdout]   27:     0x55e20c45f438 - std::panicking::try::h477cfd4b06a2e64a
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:345
[INFO] [stdout]   28:     0x55e20c45f438 - std::panic::catch_unwind::hdb5abc6d008c399d
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:382
[INFO] [stdout]   29:     0x55e20c45f438 - test::run_test_in_process::he8ff7dec91b275be
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/test/src/lib.rs:543
[INFO] [stdout]   30:     0x55e20c45f438 - test::run_test::run_test_inner::{{closure}}::hfd9f49e4a4ff9162
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/test/src/lib.rs:449
[INFO] [stdout]   31:     0x55e20c4394c6 - std::sys_common::backtrace::__rust_begin_short_backtrace::hee6d60d5bb466aff
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:137
[INFO] [stdout]   32:     0x55e20c43e635 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h988cecdf9ebbaf00
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/thread/mod.rs:464
[INFO] [stdout]   33:     0x55e20c43e635 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h330cf727ec126982
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:308
[INFO] [stdout]   34:     0x55e20c43e635 - std::panicking::try::do_call::h6cd25078f4a5ea13
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:381
[INFO] [stdout]   35:     0x55e20c43e635 - std::panicking::try::h84b1d49961301705
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:345
[INFO] [stdout]   36:     0x55e20c43e635 - std::panic::catch_unwind::h6145324593b3654b
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:382
[INFO] [stdout]   37:     0x55e20c43e635 - std::thread::Builder::spawn_unchecked::{{closure}}::ha41e72e8024f9192
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/thread/mod.rs:463
[INFO] [stdout]   38:     0x55e20c43e635 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hfb5034cf1f1be223
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:227
[INFO] [stdout]   39:     0x55e20c4972aa - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::hd4d30e37db281e8f
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/boxed.rs:1042
[INFO] [stdout]   40:     0x55e20c4972aa - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h019185a215ba16e4
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/boxed.rs:1042
[INFO] [stdout]   41:     0x55e20c4972aa - std::sys::unix::thread::Thread::new::thread_start::h33c6d7cf25f9291f
[INFO] [stdout]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys/unix/thread.rs:87
[INFO] [stdout]   42:     0x7f85907f1609 - start_thread
[INFO] [stdout]   43:     0x7f8590a7c103 - clone
[INFO] [stdout]   44:                0x0 - <unknown>
[INFO] [stdout] note: panic did not contain expected string
[INFO] [stdout]       panic message: `"removal index (is 0) should be < len (is 0)"`,
[INFO] [stdout]  expected substring: `"assertion failed: index < len"`
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     hash_keylist::tests::remove_empty
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 29 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr] error: test failed, to rerun pass '--lib'
[INFO] running `Command { std: "docker" "inspect" "97de32b98455b4638a86c716680d0c06cb80b8aef36fe054794fbc19da5c354c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97de32b98455b4638a86c716680d0c06cb80b8aef36fe054794fbc19da5c354c", kill_on_drop: false }`
[INFO] [stdout] 97de32b98455b4638a86c716680d0c06cb80b8aef36fe054794fbc19da5c354c
