[INFO] fetching crate webdataset 0.0.1...
[INFO] testing webdataset-0.0.1 against 1.100.0-beta.1 for beta-1.100-2
[INFO] extracting crate webdataset 0.0.1 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate webdataset 0.0.1
[INFO] removed 0 missing examples
[INFO] removed 0 missing tests
[INFO] finished tweaking crates.io crate webdataset 0.0.1
[INFO] tweaked toml for crates.io crate webdataset 0.0.1 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate webdataset 0.0.1 on toolchain 1.100.0-beta.1
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate webdataset 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.100.0-beta.1" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]    --> Cargo.toml:174:12
[INFO] [stderr]     |
[INFO] [stderr] 174 | homepage = "https://github.com/eugenehp/webdataset-rs"
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 179 | repository = "https://github.com/eugenehp/webdataset-rs"
[INFO] [stderr]     |              -------------------------------------------
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `webdataset` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:3111399a4047eeb3a02b7a90e478d715f38a8c6669b5c4b49d30a17385265909" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] f9980393f80d04011ad75910fac453e4628dc403a7a000da6f12ed9e9337eb27
[INFO] running `Command { std: "docker" "start" "f9980393f80d04011ad75910fac453e4628dc403a7a000da6f12ed9e9337eb27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9980393f80d04011ad75910fac453e4628dc403a7a000da6f12ed9e9337eb27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f9980393f80d04011ad75910fac453e4628dc403a7a000da6f12ed9e9337eb27" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f9980393f80d04011ad75910fac453e4628dc403a7a000da6f12ed9e9337eb27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f9980393f80d04011ad75910fac453e4628dc403a7a000da6f12ed9e9337eb27" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]    --> Cargo.toml:174:12
[INFO] [stderr]     |
[INFO] [stderr] 174 | homepage = "https://github.com/eugenehp/webdataset-rs"
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 179 | repository = "https://github.com/eugenehp/webdataset-rs"
[INFO] [stderr]     |              -------------------------------------------
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `webdataset` (manifest) generated 1 warning
[INFO] [stderr]    Compiling serde_core v1.0.229
[INFO] [stderr]    Compiling serde_json v1.0.151
[INFO] [stderr]    Compiling thiserror v2.0.20
[INFO] [stderr]    Compiling syn v3.0.5
[INFO] [stderr]    Compiling indexmap v2.14.2
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]    Compiling bytes v1.12.1
[INFO] [stderr]    Compiling once_cell v1.21.4
[INFO] [stderr]    Compiling bitflags v2.13.2
[INFO] [stderr]    Compiling crc32fast v1.5.1
[INFO] [stderr]    Compiling linux-raw-sys v0.12.1
[INFO] [stderr]    Compiling simd-adler32 v0.3.10
[INFO] [stderr]    Compiling adler2 v2.0.1
[INFO] [stderr]    Compiling serde v1.0.229
[INFO] [stderr]    Compiling miniz_oxide v0.9.1
[INFO] [stderr]    Compiling filetime v0.2.29
[INFO] [stderr]    Compiling aho-corasick v1.1.5
[INFO] [stderr]    Compiling glob v0.3.4
[INFO] [stderr]    Compiling flate2 v1.1.10
[INFO] [stderr]    Compiling regex-automata v0.4.18
[INFO] [stderr]    Compiling thiserror-impl v2.0.20
[INFO] [stderr]    Compiling xattr v1.6.1
[INFO] [stderr]    Compiling tar v0.4.46
[INFO] [stderr]    Compiling serde_yaml v0.9.34+deprecated
[INFO] [stderr]    Compiling webdataset-core v0.0.1
[INFO] [stderr]    Compiling webdataset-io v0.0.1
[INFO] [stderr]    Compiling webdataset-tenbin v0.0.1
[INFO] [stderr]    Compiling webdataset-shard v0.0.1
[INFO] [stderr]    Compiling regex v1.13.1
[INFO] [stderr]    Compiling webdataset v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr] warning: unused dependency `regex`
[INFO] [stderr]   --> Cargo.toml:52:15
[INFO] [stderr]    |
[INFO] [stderr] 52 | [dependencies.regex]
[INFO] [stderr]    |               ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `regex`
[INFO] [stderr] warning: `webdataset` (manifest) generated 1 warning
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 24.73s
[INFO] running `Command { std: "docker" "inspect" "f9980393f80d04011ad75910fac453e4628dc403a7a000da6f12ed9e9337eb27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f9980393f80d04011ad75910fac453e4628dc403a7a000da6f12ed9e9337eb27" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]    --> Cargo.toml:174:12
[INFO] [stderr]     |
[INFO] [stderr] 174 | homepage = "https://github.com/eugenehp/webdataset-rs"
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 179 | repository = "https://github.com/eugenehp/webdataset-rs"
[INFO] [stderr]     |              -------------------------------------------
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `webdataset` (manifest) generated 1 warning
[INFO] [stderr]    Compiling serde_json v1.0.151
[INFO] [stderr]    Compiling serde v1.0.229
[INFO] [stderr]    Compiling rustix v1.1.4
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]    Compiling serde_derive v1.0.229
[INFO] [stderr]    Compiling once_cell v1.21.4
[INFO] [stderr]    Compiling zerocopy v0.8.57
[INFO] [stderr]    Compiling num-traits v0.2.19
[INFO] [stderr]    Compiling clap_lex v1.1.0
[INFO] [stderr]    Compiling anstyle v1.0.14
[INFO] [stderr]    Compiling itertools v0.13.0
[INFO] [stderr]    Compiling clap_builder v4.6.6
[INFO] [stderr]    Compiling futures-util v0.3.34
[INFO] [stderr]    Compiling webdataset-core v0.0.1
[INFO] [stderr]    Compiling xattr v1.6.1
[INFO] [stderr]    Compiling webdataset-io v0.0.1
[INFO] [stderr]    Compiling tar v0.4.46
[INFO] [stderr]    Compiling criterion-plot v0.6.0
[INFO] [stderr]    Compiling webdataset-shard v0.0.1
[INFO] [stderr]    Compiling webdataset-tenbin v0.0.1
[INFO] [stderr]    Compiling fastrand v2.5.0
[INFO] [stderr]    Compiling tempfile v3.27.0
[INFO] [stderr]    Compiling futures-executor v0.3.34
[INFO] [stderr]    Compiling futures-channel v0.3.34
[INFO] [stderr]    Compiling clap v4.6.6
[INFO] [stderr]    Compiling zerocopy-derive v0.8.57
[INFO] [stderr]    Compiling serde_yaml v0.9.34+deprecated
[INFO] [stderr]    Compiling tinytemplate v1.2.1
[INFO] [stderr]    Compiling webdataset v0.0.1 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling half v2.7.1
[INFO] [stderr]    Compiling ciborium-ll v0.2.2
[INFO] [stderr]    Compiling ciborium v0.2.2
[INFO] [stderr]    Compiling criterion v0.7.0
[INFO] [stderr] warning: unused dependency `regex`
[INFO] [stderr]   --> Cargo.toml:52:15
[INFO] [stderr]    |
[INFO] [stderr] 52 | [dependencies.regex]
[INFO] [stderr]    |               ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `regex`
[INFO] [stderr] warning: `webdataset` (manifest) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 40.43s
[INFO] running `Command { std: "docker" "inspect" "f9980393f80d04011ad75910fac453e4628dc403a7a000da6f12ed9e9337eb27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-w" "/opt/rustwide/workdir" "--user" "0:0" "f9980393f80d04011ad75910fac453e4628dc403a7a000da6f12ed9e9337eb27" "/opt/rustwide/cargo-home/bin/cargo" "+1.100.0-beta.1" "test" "--frozen", kill_on_drop: false }`
[INFO] [stderr] warning: `package.homepage` is redundant with `package.repository`
[INFO] [stderr]    --> Cargo.toml:174:12
[INFO] [stderr]     |
[INFO] [stderr] 174 | homepage = "https://github.com/eugenehp/webdataset-rs"
[INFO] [stderr]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 179 | repository = "https://github.com/eugenehp/webdataset-rs"
[INFO] [stderr]     |              -------------------------------------------
[INFO] [stderr]     |
[INFO] [stderr]     = note: `cargo::redundant_homepage` is set to `warn` by default
[INFO] [stderr] help: consider removing `package.homepage`
[INFO] [stderr] warning: `webdataset` (manifest) generated 1 warning
[INFO] [stderr] warning: unused dependency `regex`
[INFO] [stderr]   --> Cargo.toml:52:15
[INFO] [stderr]    |
[INFO] [stderr] 52 | [dependencies.regex]
[INFO] [stderr]    |               ^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `regex`
[INFO] [stderr] warning: `webdataset` (manifest) generated 1 warning
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.18s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/build/webdataset/4b9a7b4e6b47a772/out/webdataset-4b9a7b4e6b47a772)
[INFO] [stdout] 
[INFO] [stdout] running 107 tests
[INFO] [stdout] test batch::tests::refuses_empty_batches ... ok
[INFO] [stdout] test batch::tests::collates_tuples_columnwise ... ok
[INFO] [stdout] test batch::tests::refuses_ragged_batches ... ok
[INFO] [stdout] test batch::tests::round_trips_through_uncollate ... ok
[INFO] [stdout] test batch::tests::keeps_text_columns_as_lists ... ok
[INFO] [stdout] test batch::tests::stacks_integers_into_a_tensor ... ok
[INFO] [stdout] test batch::tests::stacks_tensors_with_a_leading_dimension ... ok
[INFO] [stdout] test dataset::tests::refuses_a_missing_cache_directory ... ok
[INFO] [stdout] test dataset::tests::honours_epoch_length ... ok
[INFO] [stdout] test dataset::tests::resamples_shards_endlessly ... ok
[INFO] [stdout] test dataset::tests::decodes_and_projects ... FAILED
[INFO] [stdout] test dataset::tests::batches_through_the_iterator_adapters ... FAILED
[INFO] [stdout] test dataset::tests::renames_fields ... FAILED
[INFO] [stdout] test dataset::tests::reads_a_shard_end_to_end ... FAILED
[INFO] [stdout] test dataset::tests::maps_and_selects ... FAILED
[INFO] [stdout] test dataset::tests::filtering_everything_out_downstream_is_not_an_error ... FAILED
[INFO] [stdout] test dataset::tests::reports_a_dataset_that_yields_no_samples ... FAILED
[INFO] [stdout] test decode::tests::decodes_the_basic_extensions ... ok
[INFO] [stdout] test decode::tests::decodes_metadata_as_text ... ok
[INFO] [stdout] test dataset::tests::runs_over_a_worker_pool ... FAILED
[INFO] [stdout] test decode::tests::matches_multi_component_extensions ... ok
[INFO] [stdout] test decode::tests::decompresses_and_then_decodes ... ok
[INFO] [stdout] test dataset::tests::shuffles_reproducibly_for_a_fixed_seed ... FAILED
[INFO] [stdout] test encode::tests::reports_type_mismatches ... ok
[INFO] [stdout] test decode::tests::honours_only_and_partial ... ok
[INFO] [stdout] test encode::tests::round_trips_the_basic_extensions ... ok
[INFO] [stdout] test encode::tests::stores_raw_bytes_verbatim ... ok
[INFO] [stdout] test encode::tests::writes_metadata_as_text ... ok
[INFO] [stdout] test filters::tests::errors_from_upstream_pass_through_untouched ... ok
[INFO] [stdout] test decode::tests::reports_pickles_as_unsupported ... ok
[INFO] [stdout] test decode::tests::reports_bad_input_with_the_field_name ... ok
[INFO] [stdout] test encode::tests::round_trips_through_gzip ... ok
[INFO] [stdout] test encode::tests::encodes_a_single_tensor_as_a_one_element_tenbin ... ok
[INFO] [stdout] test decode::tests::round_trips_npy_and_tenbin ... ok
[INFO] [stdout] test filters::tests::extract_keys_uses_glob_patterns ... ok
[INFO] [stdout] test filters::tests::listed_and_batched_group_samples ... ok
[INFO] [stdout] test decode::tests::leaves_unknown_extensions_as_bytes ... ok
[INFO] [stdout] test decode::tests::runs_custom_handlers_before_the_defaults ... ok
[INFO] [stdout] test filters::tests::map_routes_failures_to_the_handler ... ok
[INFO] [stdout] test filters::tests::map_tuple_applies_per_position ... ok
[INFO] [stdout] test filters::tests::map_drops_none_and_preserves_the_key ... ok
[INFO] [stdout] test filters::tests::rename_keeps_or_drops_the_rest ... ok
[INFO] [stdout] test filters::tests::rename_keys_matches_patterns ... ok
[INFO] [stdout] test filters::tests::select_filters ... ok
[INFO] [stdout] test filters::tests::shuffle_handles_streams_smaller_than_the_buffer ... ok
[INFO] [stdout] test filters::tests::shuffle_keeps_every_sample ... ok
[INFO] [stdout] test filters::tests::shuffle_is_reproducible_for_a_given_seed ... ok
[INFO] [stdout] test filters::tests::non_empty_reports_an_empty_stream ... ok
[INFO] [stdout] test filters::tests::sliced_skips_steps_and_truncates ... ok
[INFO] [stdout] test filters::tests::tuple_batching_collates_columns ... ok
[INFO] [stdout] test filters::tests::to_tuple_projects_fields ... ok
[INFO] [stdout] test loader::tests::runs_inline_with_one_worker ... ok
[INFO] [stdout] test loader::tests::iter_ok_drops_failures ... ok
[INFO] [stdout] test filters::tests::unbatched_reverses_batching ... ok
[INFO] [stdout] test loader::tests::reports_errors_from_workers ... ok
[INFO] [stdout] test filters::tests::rsample_keeps_roughly_the_requested_fraction ... ok
[INFO] [stdout] test mix::tests::random_mix_rejects_bad_weights ... ok
[INFO] [stdout] test mix::tests::round_robin_can_drain_the_longest ... ok
[INFO] [stdout] test mix::tests::round_robin_interleaves ... ok
[INFO] [stdout] test mix::tests::round_robin_stops_at_the_shortest_by_default ... ok
[INFO] [stdout] test mix::tests::random_mix_can_drain_the_longest ... ok
[INFO] [stdout] test pipeline::tests::is_shared_when_cloned ... ok
[INFO] [stdout] test mix::tests::weighted_choice_follows_the_cumulative_distribution ... ok
[INFO] [stdout] test pipeline::tests::redraws_epoch_boundaries ... ok
[INFO] [stdout] test pipeline::tests::repeats_a_fixed_number_of_epochs ... ok
[INFO] [stdout] test loader::tests::runs_the_pipeline_once_per_worker_without_a_splitter ... ok
[INFO] [stdout] test pipeline::tests::replays_the_source_on_every_iteration ... ok
[INFO] [stdout] test pipeline::tests::runs_the_stages_in_order ... ok
[INFO] [stdout] test pipeline::tests::truncates_with_take ... ok
[INFO] [stdout] test shardlists::tests::claims_shards_from_a_directory ... ok
[INFO] [stdout] test loader::tests::splits_work_across_threads_without_duplication ... ok
[INFO] [stdout] test mix::tests::random_mix_is_reproducible ... ok
[INFO] [stdout] test shardlists::tests::expands_brace_patterns ... ok
[INFO] [stdout] test shardlists::tests::parses_claim_names ... ok
[INFO] [stdout] test shardlists::tests::keeps_order_without_a_seed_and_varies_with_one ... ok
[INFO] [stdout] test shardlists::tests::resamples_deterministically_when_asked ... ok
[INFO] [stdout] test shardlists::tests::rejects_an_empty_shard_list ... ok
[INFO] [stdout] test shardlists::tests::rejects_contradictory_specifications ... ok
[INFO] [stdout] test loader::tests::can_be_iterated_repeatedly ... ok
[INFO] [stdout] test shardlists::tests::single_node_only_refuses_to_guess ... ok
[INFO] [stdout] test shardlists::tests::splits_shards_across_workers ... ok
[INFO] [stdout] test sources::tests::applies_a_file_selection ... FAILED
[INFO] [stdout] test shardlists::tests::resamples_with_replacement ... ok
[INFO] [stdout] test shardlists::tests::parses_a_yaml_specification ... ok
[INFO] [stdout] test sources::tests::reads_samples_out_of_a_shard ... FAILED
[INFO] [stdout] test sources::tests::reports_a_shard_the_memory_opener_does_not_hold ... ok
[INFO] [stdout] test shardlists::tests::splitting_is_a_no_op_with_one_worker ... ok
[INFO] [stdout] test sources::tests::reports_unreadable_shards_through_the_handler ... FAILED
[INFO] [stdout] test shardlists::tests::resampling_never_ends_without_a_count ... ok
[INFO] [stdout] test stages::tests::check_empty_reports_a_starved_pipeline ... ok
[INFO] [stdout] test sources::tests::serves_shards_from_memory ... FAILED
[INFO] [stdout] test stages::tests::associate_adds_fields_by_key ... ok
[INFO] [stdout] test sources::tests::reads_several_shards_in_order ... FAILED
[INFO] [stdout] test stages::tests::memory_cache_ignores_an_abandoned_first_pass ... ok
[INFO] [stdout] test pipeline::tests::stops_instead_of_spinning_on_an_empty_source ... ok
[INFO] [stdout] test stages::tests::rename_keys_matches_by_pattern ... ok
[INFO] [stdout] test stages::tests::rename_resolves_alternatives ... ok
[INFO] [stdout] test stages::tests::decode_turns_bytes_into_values ... ok
[INFO] [stdout] test stages::tests::shuffle_repeats_with_a_fixed_seed ... ok
[INFO] [stdout] test stages::tests::map_and_select_compose ... ok
[INFO] [stdout] test stages::tests::memory_cache_replays_the_first_pass ... ok
[INFO] [stdout] test stages::tests::shuffle_varies_between_epochs_when_deterministic ... ok
[INFO] [stdout] test stages::tests::slice_and_subsample_reduce_the_stream ... ok
[INFO] [stdout] test stages::tests::trace_passes_samples_through_unchanged ... ok
[INFO] [stderr] cat: /opt/rustwide/workdir/../../testdata/sample.tgz: No such file or directory
[INFO] [stdout] test loader::tests::stops_the_workers_when_dropped_early ... ok
[INFO] [stdout] test mix::tests::random_mix_respects_weights ... ok
[INFO] [stderr] cat: /opt/rustwide/workdir/../../testdata/sample.tgz: No such file or directory
[INFO] [stderr] cat: /opt/rustwide/workdir/../../testdata/sample.tgz: No such file or directory
[INFO] [stderr] cat: /opt/rustwide/workdir/../../testdata/sample.tgz: No such file or directory
[INFO] [stderr] cat: /opt/rustwide/workdir/../../testdata/sample.tgz: No such file or directory
[INFO] [stderr] cat: /opt/rustwide/workdir/../../testdata/sample.tgz: No such file or directory
[INFO] [stderr] cat: /opt/rustwide/workdir/../../testdata/sample.tgz: No such file or directory
[INFO] [stderr] cat: /opt/rustwide/workdir/../../testdata/sample.tgz: No such file or directory
[INFO] [stderr] cat: /opt/rustwide/workdir/../../testdata/sample.tgz: No such file or directory
[INFO] [stdout] test sources::tests::caches_shards_when_asked has been running for over 60 seconds
[INFO] [stderr] cat: /opt/rustwide/workdir/../../testdata/sample.tgz: No such file or directory
[INFO] [stdout] test sources::tests::caches_shards_when_asked ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- dataset::tests::decodes_and_projects stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'dataset::tests::decodes_and_projects' (1299) panicked at src/dataset.rs:468:80:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Context { context: "/opt/rustwide/workdir/../../testdata/imagenet-000000.tgz", source: Context { context: "opening /opt/rustwide/workdir/../../testdata/imagenet-000000.tgz", source: Io(Os { code: 2, kind: NotFound, message: "No such file or directory" }) } }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::trace_unsynchronized::<std[617be2ca0a6fd877]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x56658adeb1d1 - std[617be2ca0a6fd877]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x56658adeb1d1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x56658ae02caa - <core[a373ad73a504971]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x56658ae02caa - core[a373ad73a504971]::fmt::write
[INFO] [stdout]    6:     0x56658adf0afc - core[a373ad73a504971]::io::write::default_write_fmt::<alloc[2e1b2a31b91974c5]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:402:11
[INFO] [stdout]    7:     0x56658adf0afc - <alloc[2e1b2a31b91974c5]::vec::Vec<u8> as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:335:13
[INFO] [stdout]    8:     0x56658adc4896 - <std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x56658adc4896 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:289:27
[INFO] [stdout]   10:     0x56658ade2579 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:313:9
[INFO] [stdout]   11:     0x56658ac70c70 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   12:     0x56658ac70c70 - test[aada8e7e76ba119b]::test_main_inner::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x56658ade2732 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   14:     0x56658ade2732 - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:819:13
[INFO] [stdout]   15:     0x56658adc4942 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:685:13
[INFO] [stdout]   16:     0x56658adbd099 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x56658adc56bd - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:676:5
[INFO] [stdout]   18:     0x56658ae0349c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x56658ae031f2 - core[a373ad73a504971]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1870:5
[INFO] [stdout]   20:     0x56658ab8cae5 - <core[a373ad73a504971]::result::Result<alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::value::Value>, webdataset_core[fdcbed59e11ec370]::error::Error>>::unwrap
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1232:23
[INFO] [stdout]   21:     0x56658ab8cae5 - webdataset[96956a477a03f4ea]::dataset::tests::decodes_and_projects::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:468:80
[INFO] [stdout]   22:     0x56658ab2966c - <&mut webdataset[96956a477a03f4ea]::dataset::tests::decodes_and_projects::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<(core[a373ad73a504971]::result::Result<alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::value::Value>, webdataset_core[fdcbed59e11ec370]::error::Error>,)>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:310:21
[INFO] [stdout]   23:     0x56658ab2966c - <core[a373ad73a504971]::option::Option<core[a373ad73a504971]::result::Result<alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::value::Value>, webdataset_core[fdcbed59e11ec370]::error::Error>>>::map::<alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::value::Value>, &mut webdataset[96956a477a03f4ea]::dataset::tests::decodes_and_projects::{closure#0}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/option.rs:1165:29
[INFO] [stdout]   24:     0x56658ab2966c - <core[a373ad73a504971]::iter::adapters::map::Map<webdataset[96956a477a03f4ea]::filters::ToTuple<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>>, webdataset[96956a477a03f4ea]::dataset::tests::decodes_and_projects::{closure#0}> as core[a373ad73a504971]::iter::traits::iterator::Iterator>::next
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/iter/adapters/map.rs:107:26
[INFO] [stdout]   25:     0x56658ab2ac78 - <core[a373ad73a504971]::iter::adapters::take::Take<core[a373ad73a504971]::iter::adapters::map::Map<webdataset[96956a477a03f4ea]::filters::ToTuple<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>>, webdataset[96956a477a03f4ea]::dataset::tests::decodes_and_projects::{closure#0}>> as core[a373ad73a504971]::iter::traits::iterator::Iterator>::next
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/iter/adapters/take.rs:39:23
[INFO] [stdout]   26:     0x56658ab10dc4 - <alloc[2e1b2a31b91974c5]::vec::Vec<alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::value::Value>> as alloc[2e1b2a31b91974c5]::vec::spec_from_iter_nested::SpecFromIterNested<alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::value::Value>, core[a373ad73a504971]::iter::adapters::take::Take<core[a373ad73a504971]::iter::adapters::map::Map<webdataset[96956a477a03f4ea]::filters::ToTuple<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>>, webdataset[96956a477a03f4ea]::dataset::tests::decodes_and_projects::{closure#0}>>>>::from_iter
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/spec_from_iter_nested.rs:24:41
[INFO] [stdout]   27:     0x56658ab0e82d - <alloc[2e1b2a31b91974c5]::vec::Vec<alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::value::Value>> as alloc[2e1b2a31b91974c5]::vec::spec_from_iter::SpecFromIter<alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::value::Value>, core[a373ad73a504971]::iter::adapters::take::Take<core[a373ad73a504971]::iter::adapters::map::Map<webdataset[96956a477a03f4ea]::filters::ToTuple<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>>, webdataset[96956a477a03f4ea]::dataset::tests::decodes_and_projects::{closure#0}>>>>::from_iter
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/spec_from_iter.rs:33:9
[INFO] [stdout]   28:     0x56658ab092b5 - <alloc[2e1b2a31b91974c5]::vec::Vec<alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::value::Value>> as core[a373ad73a504971]::iter::traits::collect::FromIterator<alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::value::Value>>>::from_iter::<core[a373ad73a504971]::iter::adapters::take::Take<core[a373ad73a504971]::iter::adapters::map::Map<webdataset[96956a477a03f4ea]::filters::ToTuple<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>>, webdataset[96956a477a03f4ea]::dataset::tests::decodes_and_projects::{closure#0}>>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/mod.rs:4031:9
[INFO] [stdout]   29:     0x56658ab22e0d - <core[a373ad73a504971]::iter::adapters::take::Take<core[a373ad73a504971]::iter::adapters::map::Map<webdataset[96956a477a03f4ea]::filters::ToTuple<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>>, webdataset[96956a477a03f4ea]::dataset::tests::decodes_and_projects::{closure#0}>> as core[a373ad73a504971]::iter::traits::iterator::Iterator>::collect::<alloc[2e1b2a31b91974c5]::vec::Vec<alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::value::Value>>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/iter/traits/iterator.rs:2100:9
[INFO] [stdout]   30:     0x56658ab93b99 - webdataset[96956a477a03f4ea]::dataset::tests::decodes_and_projects
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:468:98
[INFO] [stdout]   31:     0x56658ab8c567 - webdataset[96956a477a03f4ea]::dataset::tests::decodes_and_projects::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:466:30
[INFO] [stdout]   32:     0x56658ab49276 - <webdataset[96956a477a03f4ea]::dataset::tests::decodes_and_projects::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33:     0x56658ac640bb - <fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   34:     0x56658ac640bb - test[aada8e7e76ba119b]::__rust_begin_short_backtrace::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:701:18
[INFO] [stdout]   35:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:74
[INFO] [stdout]   36:     0x56658ac71295 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   37:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   38:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   39:     0x56658ac71295 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:27
[INFO] [stdout]   41:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:645:43
[INFO] [stdout]   42:     0x56658ac6ab84 - test[aada8e7e76ba119b]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:675:41
[INFO] [stdout]   43:     0x56658ac6ab84 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   44:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stdout]   45:     0x56658ac74322 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   46:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   47:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::<(), core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   48:     0x56658ac74322 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   49:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stdout]   50:     0x56658ac74322 - <std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   51:     0x56658adea53f - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::ops::function::FnOnce<(), Output = ()> + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2314:9
[INFO] [stdout]   52:     0x56658adea53f - <std[617be2ca0a6fd877]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   53:     0x7b70f5ce5dfa - <unknown>
[INFO] [stdout]   54:     0x7b70f5d793d4 - clone
[INFO] [stdout]   55:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- dataset::tests::batches_through_the_iterator_adapters stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'dataset::tests::batches_through_the_iterator_adapters' (1298) panicked at src/dataset.rs:522:96:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Context { context: "/opt/rustwide/workdir/../../testdata/imagenet-000000.tgz", source: Context { context: "opening /opt/rustwide/workdir/../../testdata/imagenet-000000.tgz", source: Io(Os { code: 2, kind: NotFound, message: "No such file or directory" }) } }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::trace_unsynchronized::<std[617be2ca0a6fd877]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x56658adeb1d1 - std[617be2ca0a6fd877]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x56658adeb1d1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x56658ae02caa - <core[a373ad73a504971]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x56658ae02caa - core[a373ad73a504971]::fmt::write
[INFO] [stdout]    6:     0x56658adf0afc - core[a373ad73a504971]::io::write::default_write_fmt::<alloc[2e1b2a31b91974c5]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:402:11
[INFO] [stdout]    7:     0x56658adf0afc - <alloc[2e1b2a31b91974c5]::vec::Vec<u8> as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:335:13
[INFO] [stdout]    8:     0x56658adc4896 - <std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x56658adc4896 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:289:27
[INFO] [stdout]   10:     0x56658ade2579 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:313:9
[INFO] [stdout]   11:     0x56658ac70c70 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   12:     0x56658ac70c70 - test[aada8e7e76ba119b]::test_main_inner::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x56658ade2732 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   14:     0x56658ade2732 - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:819:13
[INFO] [stdout]   15:     0x56658adc4942 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:685:13
[INFO] [stdout]   16:     0x56658adbd099 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x56658adc56bd - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:676:5
[INFO] [stdout]   18:     0x56658ae0349c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x56658ae031f2 - core[a373ad73a504971]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1870:5
[INFO] [stdout]   20:     0x56658ab8cce5 - <core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>>::unwrap
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1232:23
[INFO] [stdout]   21:     0x56658ab8cce5 - webdataset[96956a477a03f4ea]::dataset::tests::batches_through_the_iterator_adapters::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:522:96
[INFO] [stdout]   22:     0x56658ab2927b - <&mut webdataset[96956a477a03f4ea]::dataset::tests::batches_through_the_iterator_adapters::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<(core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>,)>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:310:21
[INFO] [stdout]   23:     0x56658ab2927b - <core[a373ad73a504971]::option::Option<core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>>>::map::<webdataset_core[fdcbed59e11ec370]::sample::Sample, &mut webdataset[96956a477a03f4ea]::dataset::tests::batches_through_the_iterator_adapters::{closure#0}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/option.rs:1165:29
[INFO] [stdout]   24:     0x56658ab2927b - <core[a373ad73a504971]::iter::adapters::map::Map<webdataset[96956a477a03f4ea]::filters::Batched<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>>, webdataset[96956a477a03f4ea]::dataset::tests::batches_through_the_iterator_adapters::{closure#0}> as core[a373ad73a504971]::iter::traits::iterator::Iterator>::next
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/iter/adapters/map.rs:107:26
[INFO] [stdout]   25:     0x56658ab18584 - <alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample> as alloc[2e1b2a31b91974c5]::vec::spec_from_iter_nested::SpecFromIterNested<webdataset_core[fdcbed59e11ec370]::sample::Sample, core[a373ad73a504971]::iter::adapters::map::Map<webdataset[96956a477a03f4ea]::filters::Batched<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>>, webdataset[96956a477a03f4ea]::dataset::tests::batches_through_the_iterator_adapters::{closure#0}>>>::from_iter
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/spec_from_iter_nested.rs:24:41
[INFO] [stdout]   26:     0x56658ab0f09d - <alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample> as alloc[2e1b2a31b91974c5]::vec::spec_from_iter::SpecFromIter<webdataset_core[fdcbed59e11ec370]::sample::Sample, core[a373ad73a504971]::iter::adapters::map::Map<webdataset[96956a477a03f4ea]::filters::Batched<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>>, webdataset[96956a477a03f4ea]::dataset::tests::batches_through_the_iterator_adapters::{closure#0}>>>::from_iter
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/spec_from_iter.rs:33:9
[INFO] [stdout]   27:     0x56658ab0a187 - <alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample> as core[a373ad73a504971]::iter::traits::collect::FromIterator<webdataset_core[fdcbed59e11ec370]::sample::Sample>>::from_iter::<core[a373ad73a504971]::iter::adapters::map::Map<webdataset[96956a477a03f4ea]::filters::Batched<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>>, webdataset[96956a477a03f4ea]::dataset::tests::batches_through_the_iterator_adapters::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/mod.rs:4031:9
[INFO] [stdout]   28:     0x56658ab21a9d - <core[a373ad73a504971]::iter::adapters::map::Map<webdataset[96956a477a03f4ea]::filters::Batched<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>>, webdataset[96956a477a03f4ea]::dataset::tests::batches_through_the_iterator_adapters::{closure#0}> as core[a373ad73a504971]::iter::traits::iterator::Iterator>::collect::<alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/iter/traits/iterator.rs:2100:9
[INFO] [stdout]   29:     0x56658ab94abb - webdataset[96956a477a03f4ea]::dataset::tests::batches_through_the_iterator_adapters
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:522:106
[INFO] [stdout]   30:     0x56658ab8c687 - webdataset[96956a477a03f4ea]::dataset::tests::batches_through_the_iterator_adapters::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:521:47
[INFO] [stdout]   31:     0x56658ab49336 - <webdataset[96956a477a03f4ea]::dataset::tests::batches_through_the_iterator_adapters::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   32:     0x56658ac640bb - <fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33:     0x56658ac640bb - test[aada8e7e76ba119b]::__rust_begin_short_backtrace::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:701:18
[INFO] [stdout]   34:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:74
[INFO] [stdout]   35:     0x56658ac71295 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   36:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   37:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   38:     0x56658ac71295 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:27
[INFO] [stdout]   40:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:645:43
[INFO] [stdout]   41:     0x56658ac6ab84 - test[aada8e7e76ba119b]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:675:41
[INFO] [stdout]   42:     0x56658ac6ab84 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   43:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stdout]   44:     0x56658ac74322 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   45:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   46:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::<(), core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   47:     0x56658ac74322 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   48:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stdout]   49:     0x56658ac74322 - <std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   50:     0x56658adea53f - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::ops::function::FnOnce<(), Output = ()> + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2314:9
[INFO] [stdout]   51:     0x56658adea53f - <std[617be2ca0a6fd877]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   52:     0x7b70f5ce5dfa - <unknown>
[INFO] [stdout]   53:     0x7b70f5d793d4 - clone
[INFO] [stdout]   54:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- dataset::tests::renames_fields stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'dataset::tests::renames_fields' (1305) panicked at src/dataset.rs:508:104:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Context { context: "/opt/rustwide/workdir/../../testdata/imagenet-000000.tgz", source: Context { context: "opening /opt/rustwide/workdir/../../testdata/imagenet-000000.tgz", source: Io(Os { code: 2, kind: NotFound, message: "No such file or directory" }) } }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::trace_unsynchronized::<std[617be2ca0a6fd877]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x56658adeb1d1 - std[617be2ca0a6fd877]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x56658adeb1d1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x56658ae02caa - <core[a373ad73a504971]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x56658ae02caa - core[a373ad73a504971]::fmt::write
[INFO] [stdout]    6:     0x56658adf0afc - core[a373ad73a504971]::io::write::default_write_fmt::<alloc[2e1b2a31b91974c5]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:402:11
[INFO] [stdout]    7:     0x56658adf0afc - <alloc[2e1b2a31b91974c5]::vec::Vec<u8> as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:335:13
[INFO] [stdout]    8:     0x56658adc4896 - <std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x56658adc4896 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:289:27
[INFO] [stdout]   10:     0x56658ade2579 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:313:9
[INFO] [stdout]   11:     0x56658ac70c70 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   12:     0x56658ac70c70 - test[aada8e7e76ba119b]::test_main_inner::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x56658ade2732 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   14:     0x56658ade2732 - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:819:13
[INFO] [stdout]   15:     0x56658adc4942 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:685:13
[INFO] [stdout]   16:     0x56658adbd099 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x56658adc56bd - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:676:5
[INFO] [stdout]   18:     0x56658ae0349c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x56658ae031f2 - core[a373ad73a504971]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1870:5
[INFO] [stdout]   20:     0x56658ab9366a - <core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>>::unwrap
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1232:23
[INFO] [stdout]   21:     0x56658ab9366a - webdataset[96956a477a03f4ea]::dataset::tests::renames_fields
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:508:104
[INFO] [stdout]   22:     0x56658ab8c507 - webdataset[96956a477a03f4ea]::dataset::tests::renames_fields::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:507:24
[INFO] [stdout]   23:     0x56658ab49236 - <webdataset[96956a477a03f4ea]::dataset::tests::renames_fields::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x56658ac640bb - <fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x56658ac640bb - test[aada8e7e76ba119b]::__rust_begin_short_backtrace::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:701:18
[INFO] [stdout]   26:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:74
[INFO] [stdout]   27:     0x56658ac71295 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   28:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   29:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   30:     0x56658ac71295 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:27
[INFO] [stdout]   32:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:645:43
[INFO] [stdout]   33:     0x56658ac6ab84 - test[aada8e7e76ba119b]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:675:41
[INFO] [stdout]   34:     0x56658ac6ab84 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stdout]   36:     0x56658ac74322 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   37:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   38:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::<(), core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   39:     0x56658ac74322 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stdout]   41:     0x56658ac74322 - <std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x56658adea53f - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::ops::function::FnOnce<(), Output = ()> + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2314:9
[INFO] [stdout]   43:     0x56658adea53f - <std[617be2ca0a6fd877]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   44:     0x7b70f5ce5dfa - <unknown>
[INFO] [stdout]   45:     0x7b70f5d793d4 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- dataset::tests::reads_a_shard_end_to_end stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'dataset::tests::reads_a_shard_end_to_end' (1303) panicked at src/dataset.rs:459:63:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Context { context: "/opt/rustwide/workdir/../../testdata/imagenet-000000.tgz", source: Context { context: "opening /opt/rustwide/workdir/../../testdata/imagenet-000000.tgz", source: Io(Os { code: 2, kind: NotFound, message: "No such file or directory" }) } }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::trace_unsynchronized::<std[617be2ca0a6fd877]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x56658adeb1d1 - std[617be2ca0a6fd877]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x56658adeb1d1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x56658ae02caa - <core[a373ad73a504971]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x56658ae02caa - core[a373ad73a504971]::fmt::write
[INFO] [stdout]    6:     0x56658adf0afc - core[a373ad73a504971]::io::write::default_write_fmt::<alloc[2e1b2a31b91974c5]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:402:11
[INFO] [stdout]    7:     0x56658adf0afc - <alloc[2e1b2a31b91974c5]::vec::Vec<u8> as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:335:13
[INFO] [stdout]    8:     0x56658adc4896 - <std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x56658adc4896 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:289:27
[INFO] [stdout]   10:     0x56658ade2579 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:313:9
[INFO] [stdout]   11:     0x56658ac70c70 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   12:     0x56658ac70c70 - test[aada8e7e76ba119b]::test_main_inner::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x56658ade2732 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   14:     0x56658ade2732 - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:819:13
[INFO] [stdout]   15:     0x56658adc4942 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:685:13
[INFO] [stdout]   16:     0x56658adbd099 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x56658adc56bd - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:676:5
[INFO] [stdout]   18:     0x56658ae0349c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x56658ae031f2 - core[a373ad73a504971]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1870:5
[INFO] [stdout]   20:     0x56658ab8cbe5 - <core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>>::unwrap
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1232:23
[INFO] [stdout]   21:     0x56658ab8cbe5 - webdataset[96956a477a03f4ea]::dataset::tests::reads_a_shard_end_to_end::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:459:63
[INFO] [stdout]   22:     0x56658ab2852b - <&mut webdataset[96956a477a03f4ea]::dataset::tests::reads_a_shard_end_to_end::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<(core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>,)>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:310:21
[INFO] [stdout]   23:     0x56658ab2852b - <core[a373ad73a504971]::option::Option<core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>>>::map::<webdataset_core[fdcbed59e11ec370]::sample::Sample, &mut webdataset[96956a477a03f4ea]::dataset::tests::reads_a_shard_end_to_end::{closure#0}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/option.rs:1165:29
[INFO] [stdout]   24:     0x56658ab2852b - <core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::dataset::tests::reads_a_shard_end_to_end::{closure#0}> as core[a373ad73a504971]::iter::traits::iterator::Iterator>::next
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/iter/adapters/map.rs:107:26
[INFO] [stdout]   25:     0x56658ab1734e - <alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample> as alloc[2e1b2a31b91974c5]::vec::spec_from_iter_nested::SpecFromIterNested<webdataset_core[fdcbed59e11ec370]::sample::Sample, core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::dataset::tests::reads_a_shard_end_to_end::{closure#0}>>>::from_iter
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/spec_from_iter_nested.rs:24:41
[INFO] [stdout]   26:     0x56658ab0efaa - <alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample> as alloc[2e1b2a31b91974c5]::vec::spec_from_iter::SpecFromIter<webdataset_core[fdcbed59e11ec370]::sample::Sample, core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::dataset::tests::reads_a_shard_end_to_end::{closure#0}>>>::from_iter
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/spec_from_iter.rs:33:9
[INFO] [stdout]   27:     0x56658ab09ff4 - <alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample> as core[a373ad73a504971]::iter::traits::collect::FromIterator<webdataset_core[fdcbed59e11ec370]::sample::Sample>>::from_iter::<core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::dataset::tests::reads_a_shard_end_to_end::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/mod.rs:4031:9
[INFO] [stdout]   28:     0x56658ab2189a - <core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::dataset::tests::reads_a_shard_end_to_end::{closure#0}> as core[a373ad73a504971]::iter::traits::iterator::Iterator>::collect::<alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/iter/traits/iterator.rs:2100:9
[INFO] [stdout]   29:     0x56658ab94380 - webdataset[96956a477a03f4ea]::dataset::tests::reads_a_shard_end_to_end
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:459:73
[INFO] [stdout]   30:     0x56658ab8c5f7 - webdataset[96956a477a03f4ea]::dataset::tests::reads_a_shard_end_to_end::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:458:34
[INFO] [stdout]   31:     0x56658ab492d6 - <webdataset[96956a477a03f4ea]::dataset::tests::reads_a_shard_end_to_end::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   32:     0x56658ac640bb - <fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33:     0x56658ac640bb - test[aada8e7e76ba119b]::__rust_begin_short_backtrace::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:701:18
[INFO] [stdout]   34:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:74
[INFO] [stdout]   35:     0x56658ac71295 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   36:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   37:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   38:     0x56658ac71295 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:27
[INFO] [stdout]   40:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:645:43
[INFO] [stdout]   41:     0x56658ac6ab84 - test[aada8e7e76ba119b]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:675:41
[INFO] [stdout]   42:     0x56658ac6ab84 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   43:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stdout]   44:     0x56658ac74322 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   45:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   46:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::<(), core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   47:     0x56658ac74322 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   48:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stdout]   49:     0x56658ac74322 - <std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   50:     0x56658adea53f - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::ops::function::FnOnce<(), Output = ()> + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2314:9
[INFO] [stdout]   51:     0x56658adea53f - <std[617be2ca0a6fd877]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   52:     0x7b70f5ce5dfa - <unknown>
[INFO] [stdout]   53:     0x7b70f5d793d4 - clone
[INFO] [stdout]   54:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- dataset::tests::maps_and_selects stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'dataset::tests::maps_and_selects' (1302) panicked at src/dataset.rs:499:24:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Context { context: "/opt/rustwide/workdir/../../testdata/imagenet-000000.tgz", source: Context { context: "opening /opt/rustwide/workdir/../../testdata/imagenet-000000.tgz", source: Io(Os { code: 2, kind: NotFound, message: "No such file or directory" }) } }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::trace_unsynchronized::<std[617be2ca0a6fd877]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x56658adeb1d1 - std[617be2ca0a6fd877]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x56658adeb1d1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x56658ae02caa - <core[a373ad73a504971]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x56658ae02caa - core[a373ad73a504971]::fmt::write
[INFO] [stdout]    6:     0x56658adf0afc - core[a373ad73a504971]::io::write::default_write_fmt::<alloc[2e1b2a31b91974c5]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:402:11
[INFO] [stdout]    7:     0x56658adf0afc - <alloc[2e1b2a31b91974c5]::vec::Vec<u8> as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:335:13
[INFO] [stdout]    8:     0x56658adc4896 - <std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x56658adc4896 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:289:27
[INFO] [stdout]   10:     0x56658ade2579 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:313:9
[INFO] [stdout]   11:     0x56658ac70c70 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   12:     0x56658ac70c70 - test[aada8e7e76ba119b]::test_main_inner::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x56658ade2732 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   14:     0x56658ade2732 - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:819:13
[INFO] [stdout]   15:     0x56658adc4942 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:685:13
[INFO] [stdout]   16:     0x56658adbd099 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x56658adc56bd - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:676:5
[INFO] [stdout]   18:     0x56658ae0349c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x56658ae031f2 - core[a373ad73a504971]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1870:5
[INFO] [stdout]   20:     0x56658ab8c825 - <core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>>::unwrap
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1232:23
[INFO] [stdout]   21:     0x56658ab8c825 - webdataset[96956a477a03f4ea]::dataset::tests::maps_and_selects::{closure#2}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:499:24
[INFO] [stdout]   22:     0x56658ab2843b - <&mut webdataset[96956a477a03f4ea]::dataset::tests::maps_and_selects::{closure#2} as core[a373ad73a504971]::ops::function::FnOnce<(core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>,)>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:310:21
[INFO] [stdout]   23:     0x56658ab2843b - <core[a373ad73a504971]::option::Option<core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>>>::map::<webdataset_core[fdcbed59e11ec370]::sample::Sample, &mut webdataset[96956a477a03f4ea]::dataset::tests::maps_and_selects::{closure#2}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/option.rs:1165:29
[INFO] [stdout]   24:     0x56658ab2843b - <core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::dataset::tests::maps_and_selects::{closure#2}> as core[a373ad73a504971]::iter::traits::iterator::Iterator>::next
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/iter/adapters/map.rs:107:26
[INFO] [stdout]   25:     0x56658ab1703e - <alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample> as alloc[2e1b2a31b91974c5]::vec::spec_from_iter_nested::SpecFromIterNested<webdataset_core[fdcbed59e11ec370]::sample::Sample, core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::dataset::tests::maps_and_selects::{closure#2}>>>::from_iter
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/spec_from_iter_nested.rs:24:41
[INFO] [stdout]   26:     0x56658ab0ef7a - <alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample> as alloc[2e1b2a31b91974c5]::vec::spec_from_iter::SpecFromIter<webdataset_core[fdcbed59e11ec370]::sample::Sample, core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::dataset::tests::maps_and_selects::{closure#2}>>>::from_iter
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/spec_from_iter.rs:33:9
[INFO] [stdout]   27:     0x56658ab09fa4 - <alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample> as core[a373ad73a504971]::iter::traits::collect::FromIterator<webdataset_core[fdcbed59e11ec370]::sample::Sample>>::from_iter::<core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::dataset::tests::maps_and_selects::{closure#2}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/mod.rs:4031:9
[INFO] [stdout]   28:     0x56658ab2186a - <core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::dataset::tests::maps_and_selects::{closure#2}> as core[a373ad73a504971]::iter::traits::iterator::Iterator>::collect::<alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/iter/traits/iterator.rs:2100:9
[INFO] [stdout]   29:     0x56658ab93917 - webdataset[96956a477a03f4ea]::dataset::tests::maps_and_selects
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:500:14
[INFO] [stdout]   30:     0x56658ab8c537 - webdataset[96956a477a03f4ea]::dataset::tests::maps_and_selects::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:493:26
[INFO] [stdout]   31:     0x56658ab49256 - <webdataset[96956a477a03f4ea]::dataset::tests::maps_and_selects::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   32:     0x56658ac640bb - <fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33:     0x56658ac640bb - test[aada8e7e76ba119b]::__rust_begin_short_backtrace::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:701:18
[INFO] [stdout]   34:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:74
[INFO] [stdout]   35:     0x56658ac71295 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   36:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   37:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   38:     0x56658ac71295 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:27
[INFO] [stdout]   40:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:645:43
[INFO] [stdout]   41:     0x56658ac6ab84 - test[aada8e7e76ba119b]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:675:41
[INFO] [stdout]   42:     0x56658ac6ab84 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   43:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stdout]   44:     0x56658ac74322 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   45:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   46:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::<(), core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   47:     0x56658ac74322 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   48:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stdout]   49:     0x56658ac74322 - <std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   50:     0x56658adea53f - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::ops::function::FnOnce<(), Output = ()> + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2314:9
[INFO] [stdout]   51:     0x56658adea53f - <std[617be2ca0a6fd877]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   52:     0x7b70f5ce5dfa - <unknown>
[INFO] [stdout]   53:     0x7b70f5d793d4 - clone
[INFO] [stdout]   54:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- dataset::tests::filtering_everything_out_downstream_is_not_an_error stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'dataset::tests::filtering_everything_out_downstream_is_not_an_error' (1300) panicked at src/dataset.rs:554:9:
[INFO] [stdout] assertion `left == right` failed
[INFO] [stdout]   left: 1
[INFO] [stdout]  right: 0
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::trace_unsynchronized::<std[617be2ca0a6fd877]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x56658adeb1d1 - std[617be2ca0a6fd877]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x56658adeb1d1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x56658ae02caa - <core[a373ad73a504971]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x56658ae02caa - core[a373ad73a504971]::fmt::write
[INFO] [stdout]    6:     0x56658adf0afc - core[a373ad73a504971]::io::write::default_write_fmt::<alloc[2e1b2a31b91974c5]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:402:11
[INFO] [stdout]    7:     0x56658adf0afc - <alloc[2e1b2a31b91974c5]::vec::Vec<u8> as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:335:13
[INFO] [stdout]    8:     0x56658adc4896 - <std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x56658adc4896 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:289:27
[INFO] [stdout]   10:     0x56658ade2579 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:313:9
[INFO] [stdout]   11:     0x56658ac70c70 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   12:     0x56658ac70c70 - test[aada8e7e76ba119b]::test_main_inner::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x56658ade2732 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   14:     0x56658ade2732 - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:819:13
[INFO] [stdout]   15:     0x56658adc4942 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:685:13
[INFO] [stdout]   16:     0x56658adbd099 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x56658adc56bd - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:676:5
[INFO] [stdout]   18:     0x56658ae0349c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x56658ae03333 - core[a373ad73a504971]::panicking::assert_failed_inner
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:452:17
[INFO] [stdout]   20:     0x56658adfe18d - core[a373ad73a504971]::panicking::assert_failed::<usize, usize>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:407:5
[INFO] [stdout]   21:     0x56658ab956b8 - webdataset[96956a477a03f4ea]::dataset::tests::filtering_everything_out_downstream_is_not_an_error
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:554:9
[INFO] [stdout]   22:     0x56658ab8c717 - webdataset[96956a477a03f4ea]::dataset::tests::filtering_everything_out_downstream_is_not_an_error::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:550:61
[INFO] [stdout]   23:     0x56658ab49396 - <webdataset[96956a477a03f4ea]::dataset::tests::filtering_everything_out_downstream_is_not_an_error::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x56658ac640bb - <fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x56658ac640bb - test[aada8e7e76ba119b]::__rust_begin_short_backtrace::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:701:18
[INFO] [stdout]   26:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:74
[INFO] [stdout]   27:     0x56658ac71295 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   28:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   29:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   30:     0x56658ac71295 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:27
[INFO] [stdout]   32:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:645:43
[INFO] [stdout]   33:     0x56658ac6ab84 - test[aada8e7e76ba119b]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:675:41
[INFO] [stdout]   34:     0x56658ac6ab84 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stdout]   36:     0x56658ac74322 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   37:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   38:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::<(), core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   39:     0x56658ac74322 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stdout]   41:     0x56658ac74322 - <std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x56658adea53f - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::ops::function::FnOnce<(), Output = ()> + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2314:9
[INFO] [stdout]   43:     0x56658adea53f - <std[617be2ca0a6fd877]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   44:     0x7b70f5ce5dfa - <unknown>
[INFO] [stdout]   45:     0x7b70f5d793d4 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- dataset::tests::reports_a_dataset_that_yields_no_samples stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'dataset::tests::reports_a_dataset_that_yields_no_samples' (1306) panicked at src/dataset.rs:544:9:
[INFO] [stdout] [Err(Context { context: "/opt/rustwide/workdir/../../testdata/sample.tgz", source: Context { context: "opening /opt/rustwide/workdir/../../testdata/sample.tgz", source: Io(Os { code: 2, kind: NotFound, message: "No such file or directory" }) } })]
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::trace_unsynchronized::<std[617be2ca0a6fd877]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x56658adeb1d1 - std[617be2ca0a6fd877]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x56658adeb1d1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x56658ae02caa - <core[a373ad73a504971]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x56658ae02caa - core[a373ad73a504971]::fmt::write
[INFO] [stdout]    6:     0x56658adf0afc - core[a373ad73a504971]::io::write::default_write_fmt::<alloc[2e1b2a31b91974c5]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:402:11
[INFO] [stdout]    7:     0x56658adf0afc - <alloc[2e1b2a31b91974c5]::vec::Vec<u8> as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:335:13
[INFO] [stdout]    8:     0x56658adc4896 - <std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x56658adc4896 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:289:27
[INFO] [stdout]   10:     0x56658ade2579 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:313:9
[INFO] [stdout]   11:     0x56658ac70c70 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   12:     0x56658ac70c70 - test[aada8e7e76ba119b]::test_main_inner::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x56658ade2732 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   14:     0x56658ade2732 - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:819:13
[INFO] [stdout]   15:     0x56658adc4942 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:685:13
[INFO] [stdout]   16:     0x56658adbd099 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x56658adc56bd - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:676:5
[INFO] [stdout]   18:     0x56658ae0349c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x56658ab95220 - webdataset[96956a477a03f4ea]::dataset::tests::reports_a_dataset_that_yields_no_samples
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:544:9
[INFO] [stdout]   20:     0x56658ab8c6e7 - webdataset[96956a477a03f4ea]::dataset::tests::reports_a_dataset_that_yields_no_samples::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:537:50
[INFO] [stdout]   21:     0x56658ab49376 - <webdataset[96956a477a03f4ea]::dataset::tests::reports_a_dataset_that_yields_no_samples::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x56658ac640bb - <fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x56658ac640bb - test[aada8e7e76ba119b]::__rust_begin_short_backtrace::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:701:18
[INFO] [stdout]   24:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:74
[INFO] [stdout]   25:     0x56658ac71295 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   26:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   27:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   28:     0x56658ac71295 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   29:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:27
[INFO] [stdout]   30:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:645:43
[INFO] [stdout]   31:     0x56658ac6ab84 - test[aada8e7e76ba119b]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:675:41
[INFO] [stdout]   32:     0x56658ac6ab84 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   33:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stdout]   34:     0x56658ac74322 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   35:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   36:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::<(), core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   37:     0x56658ac74322 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   38:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stdout]   39:     0x56658ac74322 - <std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   40:     0x56658adea53f - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::ops::function::FnOnce<(), Output = ()> + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2314:9
[INFO] [stdout]   41:     0x56658adea53f - <std[617be2ca0a6fd877]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   42:     0x7b70f5ce5dfa - <unknown>
[INFO] [stdout]   43:     0x7b70f5d793d4 - clone
[INFO] [stdout]   44:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- dataset::tests::runs_over_a_worker_pool stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'dataset::tests::runs_over_a_worker_pool' (1308) panicked at src/dataset.rs:570:9:
[INFO] [stdout] assertion `left == right` failed: splitting by worker must not change the sample count
[INFO] [stdout]   left: 2
[INFO] [stdout]  right: 1
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::trace_unsynchronized::<std[617be2ca0a6fd877]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x56658adeb1d1 - std[617be2ca0a6fd877]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x56658adeb1d1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x56658ae02caa - <core[a373ad73a504971]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x56658ae02caa - core[a373ad73a504971]::fmt::write
[INFO] [stdout]    6:     0x56658adf0afc - core[a373ad73a504971]::io::write::default_write_fmt::<alloc[2e1b2a31b91974c5]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:402:11
[INFO] [stdout]    7:     0x56658adf0afc - <alloc[2e1b2a31b91974c5]::vec::Vec<u8> as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:335:13
[INFO] [stdout]    8:     0x56658adc4896 - <std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x56658adc4896 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:289:27
[INFO] [stdout]   10:     0x56658ade2579 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:313:9
[INFO] [stdout]   11:     0x56658ac70c70 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   12:     0x56658ac70c70 - test[aada8e7e76ba119b]::test_main_inner::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x56658ade2732 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   14:     0x56658ade2732 - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:819:13
[INFO] [stdout]   15:     0x56658adc4942 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:685:13
[INFO] [stdout]   16:     0x56658adbd099 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x56658adc56bd - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:676:5
[INFO] [stdout]   18:     0x56658ae0349c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x56658ae03393 - core[a373ad73a504971]::panicking::assert_failed_inner
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:447:23
[INFO] [stdout]   20:     0x56658adfe18d - core[a373ad73a504971]::panicking::assert_failed::<usize, usize>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:407:5
[INFO] [stdout]   21:     0x56658ab942d5 - webdataset[96956a477a03f4ea]::dataset::tests::runs_over_a_worker_pool
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:570:9
[INFO] [stdout]   22:     0x56658ab8c5c7 - webdataset[96956a477a03f4ea]::dataset::tests::runs_over_a_worker_pool::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:565:33
[INFO] [stdout]   23:     0x56658ab492b6 - <webdataset[96956a477a03f4ea]::dataset::tests::runs_over_a_worker_pool::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x56658ac640bb - <fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x56658ac640bb - test[aada8e7e76ba119b]::__rust_begin_short_backtrace::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:701:18
[INFO] [stdout]   26:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:74
[INFO] [stdout]   27:     0x56658ac71295 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   28:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   29:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   30:     0x56658ac71295 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:27
[INFO] [stdout]   32:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:645:43
[INFO] [stdout]   33:     0x56658ac6ab84 - test[aada8e7e76ba119b]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:675:41
[INFO] [stdout]   34:     0x56658ac6ab84 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stdout]   36:     0x56658ac74322 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   37:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   38:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::<(), core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   39:     0x56658ac74322 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stdout]   41:     0x56658ac74322 - <std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x56658adea53f - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::ops::function::FnOnce<(), Output = ()> + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2314:9
[INFO] [stdout]   43:     0x56658adea53f - <std[617be2ca0a6fd877]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   44:     0x7b70f5ce5dfa - <unknown>
[INFO] [stdout]   45:     0x7b70f5d793d4 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- dataset::tests::shuffles_reproducibly_for_a_fixed_seed stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'dataset::tests::shuffles_reproducibly_for_a_fixed_seed' (1311) panicked at src/dataset.rs:485:28:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Context { context: "/opt/rustwide/workdir/../../testdata/imagenet-000000.tgz", source: Context { context: "opening /opt/rustwide/workdir/../../testdata/imagenet-000000.tgz", source: Io(Os { code: 2, kind: NotFound, message: "No such file or directory" }) } }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::trace_unsynchronized::<std[617be2ca0a6fd877]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x56658adeb1d1 - std[617be2ca0a6fd877]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x56658adeb1d1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x56658ae02caa - <core[a373ad73a504971]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x56658ae02caa - core[a373ad73a504971]::fmt::write
[INFO] [stdout]    6:     0x56658adf0afc - core[a373ad73a504971]::io::write::default_write_fmt::<alloc[2e1b2a31b91974c5]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:402:11
[INFO] [stdout]    7:     0x56658adf0afc - <alloc[2e1b2a31b91974c5]::vec::Vec<u8> as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:335:13
[INFO] [stdout]    8:     0x56658adc4896 - <std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x56658adc4896 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:289:27
[INFO] [stdout]   10:     0x56658ade2579 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:313:9
[INFO] [stdout]   11:     0x56658ac70c70 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   12:     0x56658ac70c70 - test[aada8e7e76ba119b]::test_main_inner::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x56658ade2732 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   14:     0x56658ade2732 - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:819:13
[INFO] [stdout]   15:     0x56658adc4942 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:685:13
[INFO] [stdout]   16:     0x56658adbd099 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x56658adc56bd - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:676:5
[INFO] [stdout]   18:     0x56658ae0349c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x56658ae031f2 - core[a373ad73a504971]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1870:5
[INFO] [stdout]   20:     0x56658ab8aa22 - <core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>>::unwrap
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1232:23
[INFO] [stdout]   21:     0x56658ab8aa22 - webdataset[96956a477a03f4ea]::dataset::tests::shuffles_reproducibly_for_a_fixed_seed::{closure#0}::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:485:28
[INFO] [stdout]   22:     0x56658ab27a8b - <&mut webdataset[96956a477a03f4ea]::dataset::tests::shuffles_reproducibly_for_a_fixed_seed::{closure#0}::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<(core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>,)>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:310:21
[INFO] [stdout]   23:     0x56658ab27a8b - <core[a373ad73a504971]::option::Option<core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>>>::map::<alloc[2e1b2a31b91974c5]::string::String, &mut webdataset[96956a477a03f4ea]::dataset::tests::shuffles_reproducibly_for_a_fixed_seed::{closure#0}::{closure#0}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/option.rs:1165:29
[INFO] [stdout]   24:     0x56658ab27a8b - <core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::dataset::tests::shuffles_reproducibly_for_a_fixed_seed::{closure#0}::{closure#0}> as core[a373ad73a504971]::iter::traits::iterator::Iterator>::next
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/iter/adapters/map.rs:107:26
[INFO] [stdout]   25:     0x56658ab143ae - <alloc[2e1b2a31b91974c5]::vec::Vec<alloc[2e1b2a31b91974c5]::string::String> as alloc[2e1b2a31b91974c5]::vec::spec_from_iter_nested::SpecFromIterNested<alloc[2e1b2a31b91974c5]::string::String, core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::dataset::tests::shuffles_reproducibly_for_a_fixed_seed::{closure#0}::{closure#0}>>>::from_iter
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/spec_from_iter_nested.rs:24:41
[INFO] [stdout]   26:     0x56658ab0eb7a - <alloc[2e1b2a31b91974c5]::vec::Vec<alloc[2e1b2a31b91974c5]::string::String> as alloc[2e1b2a31b91974c5]::vec::spec_from_iter::SpecFromIter<alloc[2e1b2a31b91974c5]::string::String, core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::dataset::tests::shuffles_reproducibly_for_a_fixed_seed::{closure#0}::{closure#0}>>>::from_iter
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/spec_from_iter.rs:33:9
[INFO] [stdout]   27:     0x56658ab098a4 - <alloc[2e1b2a31b91974c5]::vec::Vec<alloc[2e1b2a31b91974c5]::string::String> as core[a373ad73a504971]::iter::traits::collect::FromIterator<alloc[2e1b2a31b91974c5]::string::String>>::from_iter::<core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::dataset::tests::shuffles_reproducibly_for_a_fixed_seed::{closure#0}::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/mod.rs:4031:9
[INFO] [stdout]   28:     0x56658ab216ba - <core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::dataset::tests::shuffles_reproducibly_for_a_fixed_seed::{closure#0}::{closure#0}> as core[a373ad73a504971]::iter::traits::iterator::Iterator>::collect::<alloc[2e1b2a31b91974c5]::vec::Vec<alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/iter/traits/iterator.rs:2100:9
[INFO] [stdout]   29:     0x56658ab8cfbe - webdataset[96956a477a03f4ea]::dataset::tests::shuffles_reproducibly_for_a_fixed_seed::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:486:18
[INFO] [stdout]   30:     0x56658ab94d75 - webdataset[96956a477a03f4ea]::dataset::tests::shuffles_reproducibly_for_a_fixed_seed
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:488:20
[INFO] [stdout]   31:     0x56658ab8c6b7 - webdataset[96956a477a03f4ea]::dataset::tests::shuffles_reproducibly_for_a_fixed_seed::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/dataset.rs:476:48
[INFO] [stdout]   32:     0x56658ab49356 - <webdataset[96956a477a03f4ea]::dataset::tests::shuffles_reproducibly_for_a_fixed_seed::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33:     0x56658ac640bb - <fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   34:     0x56658ac640bb - test[aada8e7e76ba119b]::__rust_begin_short_backtrace::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:701:18
[INFO] [stdout]   35:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:74
[INFO] [stdout]   36:     0x56658ac71295 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   37:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   38:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   39:     0x56658ac71295 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:27
[INFO] [stdout]   41:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:645:43
[INFO] [stdout]   42:     0x56658ac6ab84 - test[aada8e7e76ba119b]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:675:41
[INFO] [stdout]   43:     0x56658ac6ab84 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   44:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stdout]   45:     0x56658ac74322 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   46:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   47:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::<(), core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   48:     0x56658ac74322 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   49:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stdout]   50:     0x56658ac74322 - <std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   51:     0x56658adea53f - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::ops::function::FnOnce<(), Output = ()> + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2314:9
[INFO] [stdout]   52:     0x56658adea53f - <std[617be2ca0a6fd877]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   53:     0x7b70f5ce5dfa - <unknown>
[INFO] [stdout]   54:     0x7b70f5d793d4 - clone
[INFO] [stdout]   55:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- sources::tests::applies_a_file_selection stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'sources::tests::applies_a_file_selection' (1397) panicked at src/sources.rs:300:62:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Context { context: "/opt/rustwide/workdir/../../testdata/sample.tgz", source: Context { context: "opening /opt/rustwide/workdir/../../testdata/sample.tgz", source: Io(Os { code: 2, kind: NotFound, message: "No such file or directory" }) } }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::trace_unsynchronized::<std[617be2ca0a6fd877]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x56658adeb1d1 - std[617be2ca0a6fd877]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x56658adeb1d1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x56658ae02caa - <core[a373ad73a504971]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x56658ae02caa - core[a373ad73a504971]::fmt::write
[INFO] [stdout]    6:     0x56658adf0afc - core[a373ad73a504971]::io::write::default_write_fmt::<alloc[2e1b2a31b91974c5]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:402:11
[INFO] [stdout]    7:     0x56658adf0afc - <alloc[2e1b2a31b91974c5]::vec::Vec<u8> as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:335:13
[INFO] [stdout]    8:     0x56658adc4896 - <std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x56658adc4896 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:289:27
[INFO] [stdout]   10:     0x56658ade2579 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:313:9
[INFO] [stdout]   11:     0x56658ac70c70 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   12:     0x56658ac70c70 - test[aada8e7e76ba119b]::test_main_inner::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x56658ade2732 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   14:     0x56658ade2732 - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:819:13
[INFO] [stdout]   15:     0x56658adc4942 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:685:13
[INFO] [stdout]   16:     0x56658adbd099 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x56658adc56bd - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:676:5
[INFO] [stdout]   18:     0x56658ae0349c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x56658ae031f2 - core[a373ad73a504971]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1870:5
[INFO] [stdout]   20:     0x56658abdaf75 - <core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>>::unwrap
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1232:23
[INFO] [stdout]   21:     0x56658abdaf75 - webdataset[96956a477a03f4ea]::sources::tests::applies_a_file_selection::{closure#1}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sources.rs:300:62
[INFO] [stdout]   22:     0x56658ab2861b - <&mut webdataset[96956a477a03f4ea]::sources::tests::applies_a_file_selection::{closure#1} as core[a373ad73a504971]::ops::function::FnOnce<(core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>,)>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:310:21
[INFO] [stdout]   23:     0x56658ab2861b - <core[a373ad73a504971]::option::Option<core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>>>::map::<webdataset_core[fdcbed59e11ec370]::sample::Sample, &mut webdataset[96956a477a03f4ea]::sources::tests::applies_a_file_selection::{closure#1}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/option.rs:1165:29
[INFO] [stdout]   24:     0x56658ab2861b - <core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::sources::tests::applies_a_file_selection::{closure#1}> as core[a373ad73a504971]::iter::traits::iterator::Iterator>::next
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/iter/adapters/map.rs:107:26
[INFO] [stdout]   25:     0x56658ab1765e - <alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample> as alloc[2e1b2a31b91974c5]::vec::spec_from_iter_nested::SpecFromIterNested<webdataset_core[fdcbed59e11ec370]::sample::Sample, core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::sources::tests::applies_a_file_selection::{closure#1}>>>::from_iter
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/spec_from_iter_nested.rs:24:41
[INFO] [stdout]   26:     0x56658ab0efda - <alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample> as alloc[2e1b2a31b91974c5]::vec::spec_from_iter::SpecFromIter<webdataset_core[fdcbed59e11ec370]::sample::Sample, core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::sources::tests::applies_a_file_selection::{closure#1}>>>::from_iter
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/spec_from_iter.rs:33:9
[INFO] [stdout]   27:     0x56658ab0a044 - <alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample> as core[a373ad73a504971]::iter::traits::collect::FromIterator<webdataset_core[fdcbed59e11ec370]::sample::Sample>>::from_iter::<core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::sources::tests::applies_a_file_selection::{closure#1}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/mod.rs:4031:9
[INFO] [stdout]   28:     0x56658ab218ca - <core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::sources::tests::applies_a_file_selection::{closure#1}> as core[a373ad73a504971]::iter::traits::iterator::Iterator>::collect::<alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/iter/traits/iterator.rs:2100:9
[INFO] [stdout]   29:     0x56658abe0783 - webdataset[96956a477a03f4ea]::sources::tests::applies_a_file_selection
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sources.rs:300:72
[INFO] [stdout]   30:     0x56658abdacd7 - webdataset[96956a477a03f4ea]::sources::tests::applies_a_file_selection::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sources.rs:294:34
[INFO] [stdout]   31:     0x56658ab49696 - <webdataset[96956a477a03f4ea]::sources::tests::applies_a_file_selection::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   32:     0x56658ac640bb - <fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33:     0x56658ac640bb - test[aada8e7e76ba119b]::__rust_begin_short_backtrace::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:701:18
[INFO] [stdout]   34:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:74
[INFO] [stdout]   35:     0x56658ac71295 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   36:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   37:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   38:     0x56658ac71295 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:27
[INFO] [stdout]   40:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:645:43
[INFO] [stdout]   41:     0x56658ac6ab84 - test[aada8e7e76ba119b]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:675:41
[INFO] [stdout]   42:     0x56658ac6ab84 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   43:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stdout]   44:     0x56658ac74322 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   45:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   46:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::<(), core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   47:     0x56658ac74322 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   48:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stdout]   49:     0x56658ac74322 - <std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   50:     0x56658adea53f - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::ops::function::FnOnce<(), Output = ()> + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2314:9
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stdout]   51:     0x56658adea53f - <std[617be2ca0a6fd877]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   52:     0x7b70f5ce5dfa - <unknown>
[INFO] [stdout]   53:     0x7b70f5d793d4 - clone
[INFO] [stdout]   54:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- sources::tests::reads_samples_out_of_a_shard stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'sources::tests::reads_samples_out_of_a_shard' (1399) panicked at src/sources.rs:226:62:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Context { context: "/opt/rustwide/workdir/../../testdata/sample.tgz", source: Context { context: "opening /opt/rustwide/workdir/../../testdata/sample.tgz", source: Io(Os { code: 2, kind: NotFound, message: "No such file or directory" }) } }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::trace_unsynchronized::<std[617be2ca0a6fd877]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x56658adeb1d1 - std[617be2ca0a6fd877]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x56658adeb1d1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x56658ae02caa - <core[a373ad73a504971]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x56658ae02caa - core[a373ad73a504971]::fmt::write
[INFO] [stdout]    6:     0x56658adf0afc - core[a373ad73a504971]::io::write::default_write_fmt::<alloc[2e1b2a31b91974c5]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:402:11
[INFO] [stdout]    7:     0x56658adf0afc - <alloc[2e1b2a31b91974c5]::vec::Vec<u8> as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:335:13
[INFO] [stdout]    8:     0x56658adc4896 - <std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x56658adc4896 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:289:27
[INFO] [stdout]   10:     0x56658ade2579 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:313:9
[INFO] [stdout]   11:     0x56658ac70c70 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   12:     0x56658ac70c70 - test[aada8e7e76ba119b]::test_main_inner::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x56658ade2732 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   14:     0x56658ade2732 - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:819:13
[INFO] [stdout]   15:     0x56658adc4942 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:685:13
[INFO] [stdout]   16:     0x56658adbd099 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x56658adc56bd - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:676:5
[INFO] [stdout]   18:     0x56658ae0349c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x56658ae031f2 - core[a373ad73a504971]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1870:5
[INFO] [stdout]   20:     0x56658abdb175 - <core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>>::unwrap
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1232:23
[INFO] [stdout]   21:     0x56658abdb175 - webdataset[96956a477a03f4ea]::sources::tests::reads_samples_out_of_a_shard::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sources.rs:226:62
[INFO] [stdout]   22:     0x56658ab287fb - <&mut webdataset[96956a477a03f4ea]::sources::tests::reads_samples_out_of_a_shard::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<(core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>,)>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:310:21
[INFO] [stdout]   23:     0x56658ab287fb - <core[a373ad73a504971]::option::Option<core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>>>::map::<webdataset_core[fdcbed59e11ec370]::sample::Sample, &mut webdataset[96956a477a03f4ea]::sources::tests::reads_samples_out_of_a_shard::{closure#0}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/option.rs:1165:29
[INFO] [stdout]   24:     0x56658ab287fb - <core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::sources::tests::reads_samples_out_of_a_shard::{closure#0}> as core[a373ad73a504971]::iter::traits::iterator::Iterator>::next
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/iter/adapters/map.rs:107:26
[INFO] [stdout]   25:     0x56658ab17c7e - <alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample> as alloc[2e1b2a31b91974c5]::vec::spec_from_iter_nested::SpecFromIterNested<webdataset_core[fdcbed59e11ec370]::sample::Sample, core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::sources::tests::reads_samples_out_of_a_shard::{closure#0}>>>::from_iter
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/spec_from_iter_nested.rs:24:41
[INFO] [stdout]   26:     0x56658ab0f03a - <alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample> as alloc[2e1b2a31b91974c5]::vec::spec_from_iter::SpecFromIter<webdataset_core[fdcbed59e11ec370]::sample::Sample, core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::sources::tests::reads_samples_out_of_a_shard::{closure#0}>>>::from_iter
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/spec_from_iter.rs:33:9
[INFO] [stdout]   27:     0x56658ab0a0e4 - <alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample> as core[a373ad73a504971]::iter::traits::collect::FromIterator<webdataset_core[fdcbed59e11ec370]::sample::Sample>>::from_iter::<core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::sources::tests::reads_samples_out_of_a_shard::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/mod.rs:4031:9
[INFO] [stdout]   28:     0x56658ab2192a - <core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::sources::tests::reads_samples_out_of_a_shard::{closure#0}> as core[a373ad73a504971]::iter::traits::iterator::Iterator>::collect::<alloc[2e1b2a31b91974c5]::vec::Vec<webdataset_core[fdcbed59e11ec370]::sample::Sample>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/iter/traits/iterator.rs:2100:9
[INFO] [stdout]   29:     0x56658abe17ba - webdataset[96956a477a03f4ea]::sources::tests::reads_samples_out_of_a_shard
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sources.rs:226:72
[INFO] [stdout]   30:     0x56658abdad67 - webdataset[96956a477a03f4ea]::sources::tests::reads_samples_out_of_a_shard::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sources.rs:221:38
[INFO] [stdout]   31:     0x56658ab496f6 - <webdataset[96956a477a03f4ea]::sources::tests::reads_samples_out_of_a_shard::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   32:     0x56658ac640bb - <fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33:     0x56658ac640bb - test[aada8e7e76ba119b]::__rust_begin_short_backtrace::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:701:18
[INFO] [stdout]   34:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:74
[INFO] [stdout]   35:     0x56658ac71295 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   36:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   37:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   38:     0x56658ac71295 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:27
[INFO] [stdout]   40:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:645:43
[INFO] [stdout]   41:     0x56658ac6ab84 - test[aada8e7e76ba119b]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:675:41
[INFO] [stdout]   42:     0x56658ac6ab84 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   43:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stdout]   44:     0x56658ac74322 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   45:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   46:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::<(), core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   47:     0x56658ac74322 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   48:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stdout]   49:     0x56658ac74322 - <std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   50:     0x56658adea53f - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::ops::function::FnOnce<(), Output = ()> + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2314:9
[INFO] [stdout]   51:     0x56658adea53f - <std[617be2ca0a6fd877]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   52:     0x7b70f5ce5dfa - <unknown>
[INFO] [stdout]   53:     0x7b70f5d793d4 - clone
[INFO] [stdout]   54:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- sources::tests::reports_unreadable_shards_through_the_handler stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'sources::tests::reports_unreadable_shards_through_the_handler' (1403) panicked at src/sources.rs:267:9:
[INFO] [stdout] the good shard should still be read
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::trace_unsynchronized::<std[617be2ca0a6fd877]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x56658adeb1d1 - std[617be2ca0a6fd877]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x56658adeb1d1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x56658ae02caa - <core[a373ad73a504971]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x56658ae02caa - core[a373ad73a504971]::fmt::write
[INFO] [stdout]    6:     0x56658adf0afc - core[a373ad73a504971]::io::write::default_write_fmt::<alloc[2e1b2a31b91974c5]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:402:11
[INFO] [stdout]    7:     0x56658adf0afc - <alloc[2e1b2a31b91974c5]::vec::Vec<u8> as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:335:13
[INFO] [stdout]    8:     0x56658adc4896 - <std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x56658adc4896 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:289:27
[INFO] [stdout]   10:     0x56658ade2579 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:313:9
[INFO] [stdout]   11:     0x56658ac70c70 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   12:     0x56658ac70c70 - test[aada8e7e76ba119b]::test_main_inner::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x56658ade2732 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   14:     0x56658ade2732 - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:819:13
[INFO] [stdout]   15:     0x56658adc4974 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:678:13
[INFO] [stdout]   16:     0x56658adbd099 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x56658adc56bd - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:676:5
[INFO] [stdout]   18:     0x56658ae0349c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x56658abe248a - webdataset[96956a477a03f4ea]::sources::tests::reports_unreadable_shards_through_the_handler
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sources.rs:267:9
[INFO] [stdout]   20:     0x56658abdadc7 - webdataset[96956a477a03f4ea]::sources::tests::reports_unreadable_shards_through_the_handler::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sources.rs:258:55
[INFO] [stdout]   21:     0x56658ab49736 - <webdataset[96956a477a03f4ea]::sources::tests::reports_unreadable_shards_through_the_handler::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   22:     0x56658ac640bb - <fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   23:     0x56658ac640bb - test[aada8e7e76ba119b]::__rust_begin_short_backtrace::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:701:18
[INFO] [stdout]   24:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:74
[INFO] [stdout]   25:     0x56658ac71295 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   26:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   27:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   28:     0x56658ac71295 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   29:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:27
[INFO] [stdout]   30:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:645:43
[INFO] [stdout]   31:     0x56658ac6ab84 - test[aada8e7e76ba119b]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:675:41
[INFO] [stdout]   32:     0x56658ac6ab84 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   33:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stdout]   34:     0x56658ac74322 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   35:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   36:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::<(), core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   37:     0x56658ac74322 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   38:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stdout]   39:     0x56658ac74322 - <std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   40:     0x56658adea53f - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::ops::function::FnOnce<(), Output = ()> + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2314:9
[INFO] [stdout]   41:     0x56658adea53f - <std[617be2ca0a6fd877]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   42:     0x7b70f5ce5dfa - <unknown>
[INFO] [stdout]   43:     0x7b70f5d793d4 - clone
[INFO] [stdout]   44:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- sources::tests::serves_shards_from_memory stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'sources::tests::serves_shards_from_memory' (1404) panicked at src/sources.rs:272:59:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Os { code: 2, kind: NotFound, message: "No such file or directory" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::trace_unsynchronized::<std[617be2ca0a6fd877]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x56658adeb1d1 - std[617be2ca0a6fd877]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x56658adeb1d1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x56658ae02caa - <core[a373ad73a504971]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x56658ae02caa - core[a373ad73a504971]::fmt::write
[INFO] [stdout]    6:     0x56658adf0afc - core[a373ad73a504971]::io::write::default_write_fmt::<alloc[2e1b2a31b91974c5]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:402:11
[INFO] [stdout]    7:     0x56658adf0afc - <alloc[2e1b2a31b91974c5]::vec::Vec<u8> as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:335:13
[INFO] [stdout]    8:     0x56658adc4896 - <std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x56658adc4896 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:289:27
[INFO] [stdout]   10:     0x56658ade2579 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:313:9
[INFO] [stdout]   11:     0x56658ac70c70 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   12:     0x56658ac70c70 - test[aada8e7e76ba119b]::test_main_inner::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x56658ade2732 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   14:     0x56658ade2732 - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:819:13
[INFO] [stdout]   15:     0x56658adc4942 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:685:13
[INFO] [stdout]   16:     0x56658adbd099 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x56658adc56bd - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:676:5
[INFO] [stdout]   18:     0x56658ae0349c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x56658ae031f2 - core[a373ad73a504971]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1870:5
[INFO] [stdout]   20:     0x56658abe1030 - <core[a373ad73a504971]::result::Result<alloc[2e1b2a31b91974c5]::vec::Vec<u8>, core[a373ad73a504971]::io::error::Error>>::unwrap
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1232:23
[INFO] [stdout]   21:     0x56658abe1030 - webdataset[96956a477a03f4ea]::sources::tests::serves_shards_from_memory
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sources.rs:272:59
[INFO] [stdout]   22:     0x56658abdad37 - webdataset[96956a477a03f4ea]::sources::tests::serves_shards_from_memory::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sources.rs:271:35
[INFO] [stdout]   23:     0x56658ab496d6 - <webdataset[96956a477a03f4ea]::sources::tests::serves_shards_from_memory::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x56658ac640bb - <fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x56658ac640bb - test[aada8e7e76ba119b]::__rust_begin_short_backtrace::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:701:18
[INFO] [stdout]   26:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:74
[INFO] [stdout]   27:     0x56658ac71295 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   28:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   29:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   30:     0x56658ac71295 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:27
[INFO] [stdout]   32:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:645:43
[INFO] [stdout]   33:     0x56658ac6ab84 - test[aada8e7e76ba119b]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:675:41
[INFO] [stdout]   34:     0x56658ac6ab84 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stdout]   36:     0x56658ac74322 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   37:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   38:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::<(), core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   39:     0x56658ac74322 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stdout]   41:     0x56658ac74322 - <std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x56658adea53f - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::ops::function::FnOnce<(), Output = ()> + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2314:9
[INFO] [stdout]   43:     0x56658adea53f - <std[617be2ca0a6fd877]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   44:     0x7b70f5ce5dfa - <unknown>
[INFO] [stdout]   45:     0x7b70f5d793d4 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- sources::tests::reads_several_shards_in_order stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'sources::tests::reads_several_shards_in_order' (1400) panicked at src/sources.rs:239:59:
[INFO] [stdout] called `Result::unwrap()` on an `Err` value: Context { context: "/opt/rustwide/workdir/../../testdata/sample.tgz", source: Context { context: "opening /opt/rustwide/workdir/../../testdata/sample.tgz", source: Io(Os { code: 2, kind: NotFound, message: "No such file or directory" }) } }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::trace_unsynchronized::<std[617be2ca0a6fd877]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x56658adeb1d1 - std[617be2ca0a6fd877]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x56658adeb1d1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x56658ae02caa - <core[a373ad73a504971]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x56658ae02caa - core[a373ad73a504971]::fmt::write
[INFO] [stdout]    6:     0x56658adf0afc - core[a373ad73a504971]::io::write::default_write_fmt::<alloc[2e1b2a31b91974c5]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:402:11
[INFO] [stdout]    7:     0x56658adf0afc - <alloc[2e1b2a31b91974c5]::vec::Vec<u8> as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:335:13
[INFO] [stdout]    8:     0x56658adc4896 - <std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x56658adc4896 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:289:27
[INFO] [stdout]   10:     0x56658ade2579 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:313:9
[INFO] [stdout]   11:     0x56658ac70c70 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   12:     0x56658ac70c70 - test[aada8e7e76ba119b]::test_main_inner::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x56658ade2732 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   14:     0x56658ade2732 - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:819:13
[INFO] [stdout]   15:     0x56658adc4942 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:685:13
[INFO] [stdout]   16:     0x56658adbd099 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x56658adc56bd - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:676:5
[INFO] [stdout]   18:     0x56658ae0349c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x56658ae031f2 - core[a373ad73a504971]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1870:5
[INFO] [stdout]   20:     0x56658abdb292 - <core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>>::unwrap
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/result.rs:1232:23
[INFO] [stdout]   21:     0x56658abdb292 - webdataset[96956a477a03f4ea]::sources::tests::reads_several_shards_in_order::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sources.rs:239:59
[INFO] [stdout]   22:     0x56658ab288eb - <&mut webdataset[96956a477a03f4ea]::sources::tests::reads_several_shards_in_order::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<(core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>,)>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:310:21
[INFO] [stdout]   23:     0x56658ab288eb - <core[a373ad73a504971]::option::Option<core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>>>::map::<alloc[2e1b2a31b91974c5]::string::String, &mut webdataset[96956a477a03f4ea]::sources::tests::reads_several_shards_in_order::{closure#0}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/option.rs:1165:29
[INFO] [stdout]   24:     0x56658ab288eb - <core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::sources::tests::reads_several_shards_in_order::{closure#0}> as core[a373ad73a504971]::iter::traits::iterator::Iterator>::next
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/iter/adapters/map.rs:107:26
[INFO] [stdout]   25:     0x56658ab1554e - <alloc[2e1b2a31b91974c5]::vec::Vec<alloc[2e1b2a31b91974c5]::string::String> as alloc[2e1b2a31b91974c5]::vec::spec_from_iter_nested::SpecFromIterNested<alloc[2e1b2a31b91974c5]::string::String, core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::sources::tests::reads_several_shards_in_order::{closure#0}>>>::from_iter
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/spec_from_iter_nested.rs:24:41
[INFO] [stdout]   26:     0x56658ab0ec9a - <alloc[2e1b2a31b91974c5]::vec::Vec<alloc[2e1b2a31b91974c5]::string::String> as alloc[2e1b2a31b91974c5]::vec::spec_from_iter::SpecFromIter<alloc[2e1b2a31b91974c5]::string::String, core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::sources::tests::reads_several_shards_in_order::{closure#0}>>>::from_iter
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/spec_from_iter.rs:33:9
[INFO] [stdout]   27:     0x56658ab09a84 - <alloc[2e1b2a31b91974c5]::vec::Vec<alloc[2e1b2a31b91974c5]::string::String> as core[a373ad73a504971]::iter::traits::collect::FromIterator<alloc[2e1b2a31b91974c5]::string::String>>::from_iter::<core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::sources::tests::reads_several_shards_in_order::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/vec/mod.rs:4031:9
[INFO] [stdout]   28:     0x56658ab2195a - <core[a373ad73a504971]::iter::adapters::map::Map<alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::iter::traits::iterator::Iterator<Item = core[a373ad73a504971]::result::Result<webdataset_core[fdcbed59e11ec370]::sample::Sample, webdataset_core[fdcbed59e11ec370]::error::Error>> + core[a373ad73a504971]::marker::Send>, webdataset[96956a477a03f4ea]::sources::tests::reads_several_shards_in_order::{closure#0}> as core[a373ad73a504971]::iter::traits::iterator::Iterator>::collect::<alloc[2e1b2a31b91974c5]::vec::Vec<alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/iter/traits/iterator.rs:2100:9
[INFO] [stdout]   29:     0x56658abe1cbe - webdataset[96956a477a03f4ea]::sources::tests::reads_several_shards_in_order
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sources.rs:239:96
[INFO] [stdout]   30:     0x56658abdad97 - webdataset[96956a477a03f4ea]::sources::tests::reads_several_shards_in_order::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sources.rs:234:39
[INFO] [stdout]   31:     0x56658ab49716 - <webdataset[96956a477a03f4ea]::sources::tests::reads_several_shards_in_order::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   32:     0x56658ac640bb - <fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   33:     0x56658ac640bb - test[aada8e7e76ba119b]::__rust_begin_short_backtrace::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:701:18
[INFO] [stdout]   34:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:74
[INFO] [stdout]   35:     0x56658ac71295 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   36:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   37:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   38:     0x56658ac71295 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   39:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:27
[INFO] [stdout]   40:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:645:43
[INFO] [stdout]   41:     0x56658ac6ab84 - test[aada8e7e76ba119b]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:675:41
[INFO] [stdout]   42:     0x56658ac6ab84 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   43:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stdout]   44:     0x56658ac74322 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   45:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   46:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::<(), core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   47:     0x56658ac74322 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   48:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stdout]   49:     0x56658ac74322 - <std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   50:     0x56658adea53f - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::ops::function::FnOnce<(), Output = ()> + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2314:9
[INFO] [stdout]   51:     0x56658adea53f - <std[617be2ca0a6fd877]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   52:     0x7b70f5ce5dfa - <unknown>
[INFO] [stdout]   53:     0x7b70f5d793d4 - clone
[INFO] [stdout]   54:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- sources::tests::caches_shards_when_asked stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'sources::tests::caches_shards_when_asked' (1398) panicked at src/sources.rs:254:9:
[INFO] [stdout] assertion `left == right` failed: the shard should have been cached
[INFO] [stdout]   left: 0
[INFO] [stdout]  right: 1
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x56658adeb1d1 - std[617be2ca0a6fd877]::backtrace_rs::backtrace::trace_unsynchronized::<std[617be2ca0a6fd877]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x56658adeb1d1 - std[617be2ca0a6fd877]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x56658adeb1d1 - <<std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[a373ad73a504971]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x56658ae02caa - <core[a373ad73a504971]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x56658ae02caa - core[a373ad73a504971]::fmt::write
[INFO] [stdout]    6:     0x56658adf0afc - core[a373ad73a504971]::io::write::default_write_fmt::<alloc[2e1b2a31b91974c5]::vec::Vec<u8>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:402:11
[INFO] [stdout]    7:     0x56658adf0afc - <alloc[2e1b2a31b91974c5]::vec::Vec<u8> as core[a373ad73a504971]::io::write::Write>::write_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/io/write.rs:335:13
[INFO] [stdout]    8:     0x56658adc4896 - <std[617be2ca0a6fd877]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x56658adc4896 - std[617be2ca0a6fd877]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:289:27
[INFO] [stdout]   10:     0x56658ade2579 - std[617be2ca0a6fd877]::panicking::default_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:313:9
[INFO] [stdout]   11:     0x56658ac70c70 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   12:     0x56658ac70c70 - test[aada8e7e76ba119b]::test_main_inner::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:137:21
[INFO] [stdout]   13:     0x56658ade2732 - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn for<'a, 'b> core[a373ad73a504971]::ops::function::Fn<(&'a std[617be2ca0a6fd877]::panic::PanicHookInfo<'b>,), Output = ()> + core[a373ad73a504971]::marker::Sync + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::Fn<(&std[617be2ca0a6fd877]::panic::PanicHookInfo,)>>::call
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2328:9
[INFO] [stdout]   14:     0x56658ade2732 - std[617be2ca0a6fd877]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:819:13
[INFO] [stdout]   15:     0x56658adc4942 - std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:685:13
[INFO] [stdout]   16:     0x56658adbd099 - std[617be2ca0a6fd877]::sys::backtrace::__rust_end_short_backtrace::<std[617be2ca0a6fd877]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   17:     0x56658adc56bd - __rustc[ea4f61d10b84890b]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:676:5
[INFO] [stdout]   18:     0x56658ae0349c - core[a373ad73a504971]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:80:14
[INFO] [stdout]   19:     0x56658ae03393 - core[a373ad73a504971]::panicking::assert_failed_inner
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:447:23
[INFO] [stdout]   20:     0x56658adfe18d - core[a373ad73a504971]::panicking::assert_failed::<usize, usize>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panicking.rs:407:5
[INFO] [stdout]   21:     0x56658abe0ef1 - webdataset[96956a477a03f4ea]::sources::tests::caches_shards_when_asked
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sources.rs:254:9
[INFO] [stdout]   22:     0x56658abdad07 - webdataset[96956a477a03f4ea]::sources::tests::caches_shards_when_asked::{closure#0}
[INFO] [stdout]                                at /opt/rustwide/workdir/src/sources.rs:246:34
[INFO] [stdout]   23:     0x56658ab496b6 - <webdataset[96956a477a03f4ea]::sources::tests::caches_shards_when_asked::{closure#0} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   24:     0x56658ac640bb - <fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   25:     0x56658ac640bb - test[aada8e7e76ba119b]::__rust_begin_short_backtrace::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, fn() -> core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:701:18
[INFO] [stdout]   26:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:74
[INFO] [stdout]   27:     0x56658ac71295 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   28:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   29:     0x56658ac71295 - std[617be2ca0a6fd877]::panicking::catch_unwind::<core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>, core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   30:     0x56658ac71295 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<test[aada8e7e76ba119b]::run_test_in_process::{closure#0}>, core[a373ad73a504971]::result::Result<(), alloc[2e1b2a31b91974c5]::string::String>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test_in_process
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:724:27
[INFO] [stdout]   32:     0x56658ac71295 - test[aada8e7e76ba119b]::run_test::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:645:43
[INFO] [stdout]   33:     0x56658ac6ab84 - test[aada8e7e76ba119b]::run_test::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/test/src/lib.rs:675:41
[INFO] [stdout]   34:     0x56658ac6ab84 - std[617be2ca0a6fd877]::sys::backtrace::__rust_begin_short_backtrace::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/backtrace.rs:166:18
[INFO] [stdout]   35:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:70:13
[INFO] [stdout]   36:     0x56658ac74322 - <core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/panic/unwind_safe.rs:275:9
[INFO] [stdout]   37:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::do_call::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:573:43
[INFO] [stdout]   38:     0x56658ac74322 - std[617be2ca0a6fd877]::panicking::catch_unwind::<(), core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panicking.rs:541:19
[INFO] [stdout]   39:     0x56658ac74322 - std[617be2ca0a6fd877]::panic::catch_unwind::<core[a373ad73a504971]::panic::unwind_safe::AssertUnwindSafe<std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}::{closure#0}>, ()>
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x56658ac74322 - std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked::<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/thread/lifecycle.rs:68:26
[INFO] [stdout]   41:     0x56658ac74322 - <std[617be2ca0a6fd877]::thread::lifecycle::spawn_unchecked<test[aada8e7e76ba119b]::run_test::{closure#1}, ()>::{closure#1} as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/core/src/ops/function.rs:250:5
[INFO] [stdout]   42:     0x56658adea53f - <alloc[2e1b2a31b91974c5]::boxed::Box<dyn core[a373ad73a504971]::ops::function::FnOnce<(), Output = ()> + core[a373ad73a504971]::marker::Send> as core[a373ad73a504971]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/alloc/src/boxed.rs:2314:9
[INFO] [stdout]   43:     0x56658adea53f - <std[617be2ca0a6fd877]::sys::thread::unix::Thread>::new::thread_start
[INFO] [stdout]                                at /rustc/e3feeb59cd1bdd011a2bfcc0747b55125d9b8527/library/std/src/sys/thread/unix.rs:127:17
[INFO] [stdout]   44:     0x7b70f5ce5dfa - <unknown>
[INFO] [stdout]   45:     0x7b70f5d793d4 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     dataset::tests::batches_through_the_iterator_adapters
[INFO] [stdout]     dataset::tests::decodes_and_projects
[INFO] [stdout]     dataset::tests::filtering_everything_out_downstream_is_not_an_error
[INFO] [stdout]     dataset::tests::maps_and_selects
[INFO] [stdout]     dataset::tests::reads_a_shard_end_to_end
[INFO] [stdout]     dataset::tests::renames_fields
[INFO] [stdout]     dataset::tests::reports_a_dataset_that_yields_no_samples
[INFO] [stdout]     dataset::tests::runs_over_a_worker_pool
[INFO] [stdout]     dataset::tests::shuffles_reproducibly_for_a_fixed_seed
[INFO] [stdout]     sources::tests::applies_a_file_selection
[INFO] [stdout]     sources::tests::caches_shards_when_asked
[INFO] [stdout]     sources::tests::reads_samples_out_of_a_shard
[INFO] [stdout]     sources::tests::reads_several_shards_in_order
[INFO] [stdout]     sources::tests::reports_unreadable_shards_through_the_handler
[INFO] [stdout]     sources::tests::serves_shards_from_memory
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 92 passed; 15 failed; 0 ignored; 0 measured; 0 filtered out; finished in 75.20s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "f9980393f80d04011ad75910fac453e4628dc403a7a000da6f12ed9e9337eb27", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f9980393f80d04011ad75910fac453e4628dc403a7a000da6f12ed9e9337eb27", kill_on_drop: false }`
[INFO] [stdout] f9980393f80d04011ad75910fac453e4628dc403a7a000da6f12ed9e9337eb27
