[INFO] fetching crate grabbag 0.1.2...
[INFO] testing grabbag-0.1.2 against beta-2020-10-09 for beta-1.48-1
[INFO] extracting crate grabbag 0.1.2 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate grabbag 0.1.2 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate grabbag 0.1.2
[INFO] removed path dependency grabbag_macros from crates.io crate grabbag 0.1.2
[INFO] finished tweaking crates.io crate grabbag 0.1.2
[INFO] tweaked toml for crates.io crate grabbag 0.1.2 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded grabbag_macros v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b405c8df9bb05ebd8e81c82afafd81ad3d47f11b2ef0b179eb7685a945432f1f
[INFO] running `Command { std: "docker" "start" "-a" "b405c8df9bb05ebd8e81c82afafd81ad3d47f11b2ef0b179eb7685a945432f1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b405c8df9bb05ebd8e81c82afafd81ad3d47f11b2ef0b179eb7685a945432f1f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b405c8df9bb05ebd8e81c82afafd81ad3d47f11b2ef0b179eb7685a945432f1f", kill_on_drop: false }`
[INFO] [stdout] b405c8df9bb05ebd8e81c82afafd81ad3d47f11b2ef0b179eb7685a945432f1f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c112252811ac2d1a4ba32ac0e0ef67d03609a0ab06ebc0b9ead24b625c58ed83
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "c112252811ac2d1a4ba32ac0e0ef67d03609a0ab06ebc0b9ead24b625c58ed83", kill_on_drop: false }`
[INFO] [stderr]    Compiling grabbag_macros v0.1.2
[INFO] [stderr]    Compiling grabbag v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.57s
[INFO] running `Command { std: "docker" "inspect" "c112252811ac2d1a4ba32ac0e0ef67d03609a0ab06ebc0b9ead24b625c58ed83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c112252811ac2d1a4ba32ac0e0ef67d03609a0ab06ebc0b9ead24b625c58ed83", kill_on_drop: false }`
[INFO] [stdout] c112252811ac2d1a4ba32ac0e0ef67d03609a0ab06ebc0b9ead24b625c58ed83
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ed20233d130f9287f00b636826f876041c0995695d1e91016904a22878aad53a
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "ed20233d130f9287f00b636826f876041c0995695d1e91016904a22878aad53a", kill_on_drop: false }`
[INFO] [stderr]    Compiling grabbag v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused return value of `collect` that must be used
[INFO] [stdout]   --> src/iter/skip_exactly.rs:57:37
[INFO] [stdout]    |
[INFO] [stdout] 57 |     let r = thread::spawn(move || { v.into_iter().skip_exactly(3).collect::<Vec<_>>(); }).join();
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused return value of `collect` that must be used
[INFO] [stdout]   --> src/iter/take_exactly.rs:90:37
[INFO] [stdout]    |
[INFO] [stdout] 90 |     let r = thread::spawn(move || { v.into_iter().take_exactly(3).collect::<Vec<_>>(); }).join();
[INFO] [stdout]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 2.54s
[INFO] running `Command { std: "docker" "inspect" "ed20233d130f9287f00b636826f876041c0995695d1e91016904a22878aad53a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed20233d130f9287f00b636826f876041c0995695d1e91016904a22878aad53a", kill_on_drop: false }`
[INFO] [stdout] ed20233d130f9287f00b636826f876041c0995695d1e91016904a22878aad53a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-10-09" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] e833c9340343e2f5dc5e49d1eba42bc41383adc9f8efa9989eaf670a5d5de2c2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "e833c9340343e2f5dc5e49d1eba42bc41383adc9f8efa9989eaf670a5d5de2c2", kill_on_drop: false }`
[INFO] [stderr] warning: unused return value of `collect` that must be used
[INFO] [stderr]   --> src/iter/skip_exactly.rs:57:37
[INFO] [stderr]    |
[INFO] [stderr] 57 |     let r = thread::spawn(move || { v.into_iter().skip_exactly(3).collect::<Vec<_>>(); }).join();
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: unused return value of `collect` that must be used
[INFO] [stderr]   --> src/iter/take_exactly.rs:90:37
[INFO] [stderr]    |
[INFO] [stderr] 90 |     let r = thread::spawn(move || { v.into_iter().take_exactly(3).collect::<Vec<_>>(); }).join();
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: if you really need to exhaust the iterator, consider `.for_each(drop)` instead
[INFO] [stderr] 
[INFO] [stderr] warning: 2 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.07s
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/grabbag-53218a331ef1e551
[INFO] [stdout] running 22 tests
[INFO] [stdout] test iter::fold::test_foldl_map ... ok
[INFO] [stdout] test iter::fold::test_foldl ... ok
[INFO] [stdout] test iter::clone_each::test_clone_each ... ok
[INFO] [stdout] test iter::accumulate::test_accumulate ... ok
[INFO] [stdout] test iter::fold::test_foldr ... ok
[INFO] [stdout] test iter::cartesian_product::test_cartesian_product ... ok
[INFO] [stderr] thread '<unnamed>' panicked at 'skip_exactly asked to skip 3 elements, but only got 2', src/iter/skip_exactly.rs:38:25
[INFO] [stdout] test iter::accumulate::test_accumulate_unwrap ... ok
[INFO] [stderr] stack backtrace:
[INFO] [stdout] test iter::intersperse::test_intersperse ... ok
[INFO] [stderr] thread '<unnamed>' panicked at 'take_exactly expected 1 more elements from iterator, but ran out', src/iter/take_exactly.rs:67:25
[INFO] [stdout] test iter::pad_tail_to::test_pad_tail_to ... ok
[INFO] [stdout] test iter::group_by::test_group_by ... ok
[INFO] [stdout] test iter::take_exactly::test_take ... ok
[INFO] [stdout] test iter::stride::test_stride ... ok
[INFO] [stdout] test iter::sorted::test_sorted_by ... ok
[INFO] [stdout] test iter::sorted::test_sorted ... ok
[INFO] [stdout] test iter::keep_some::test_keep_some ... ok
[INFO] [stdout] test iter::round_robin::test_round_robin_longest ... ok
[INFO] [stdout] test iter::skip_exactly::test_skip ... ok
[INFO] [stdout] test iter::round_robin::test_round_robin ... ok
[INFO] [stdout] test iter::tee::test_tee ... ok
[INFO] [stdout] test iter::zip_longest::test_zip_longest ... ok
[INFO] [stderr]    0:     0x559aa4c43bf0 - std::backtrace_rs::backtrace::libunwind::trace::h7cf3ca97bd83fbab
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stderr]    1:     0x559aa4c43bf0 - std::backtrace_rs::backtrace::trace_unsynchronized::h5a69c674b2d9ea5c
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x559aa4c43bf0 - std::sys_common::backtrace::_print_fmt::hdf72478dfcb50678
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:79
[INFO] [stderr]    3:     0x559aa4c43bf0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1e0bdbb35e83deca
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:58
[INFO] [stderr]    4:     0x559aa4c65f2c - core::fmt::write::he67f9b17bcb7ee73
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/fmt/mod.rs:1080
[INFO] [stderr]    5:     0x559aa4c404c2 - std::io::Write::write_fmt::hac97d5cb5753e2ec
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/io/mod.rs:1516
[INFO] [stderr]    6:     0x559aa4c4610d - std::sys_common::backtrace::_print::haa20918e28a126c5
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:61
[INFO] [stderr]    7:     0x559aa4c4610d - std::sys_common::backtrace::print::h49e772a4873d9076
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:48
[INFO] [stderr]    8:     0x559aa4c4610d - std::panicking::default_hook::{{closure}}::hb218b305d15e3f11
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:208
[INFO] [stderr]    9:     0x559aa4c45db8 - std::panicking::default_hook::h63997b7b949e1ce0
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:227
[INFO] [stderr]   10:     0x559aa4c467f1 - std::panicking::rust_panic_with_hook::hb54f09ccadf64bd3
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:577
[INFO] [stderr]   11:     0x559aa4c46399 - std::panicking::begin_panic_handler::{{closure}}::h8b43445b254eeb30
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:484
[INFO] [stderr]   12:     0x559aa4c4407c - std::sys_common::backtrace::__rust_end_short_backtrace::hacd691450edfeae0
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:153
[INFO] [stderr]   13:     0x559aa4c46359 - rust_begin_unwind
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:483
[INFO] [stderr]   14:     0x559aa4c4630b - std::panicking::begin_panic_fmt::hef75366dd3a9de61
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:437
[INFO] [stderr]   15:     0x559aa4bb4d95 - grabbag::iter::skip_exactly::SkipExactlyIterator::skip_exactly::h421fade7fa359aba
[INFO] [stderr]                                at /opt/rustwide/workdir/src/iter/skip_exactly.rs:38
[INFO] [stderr]   16:     0x559aa4bc6701 - grabbag::iter::skip_exactly::test_skip_exactly::{{closure}}::h7ffdeb062f327910
[INFO] [stderr]                                at /opt/rustwide/workdir/src/iter/skip_exactly.rs:57
[INFO] [stderr]   17:     0x559aa4bdfc68 - std::sys_common::backtrace::__rust_begin_short_backtrace::h54b8a5f5623f62de
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:137
[INFO] [stderr]   18:     0x559aa4bbbfd5 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h71da7a0d17312a5f
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/thread/mod.rs:464
[INFO] [stderr]   19:     0x559aa4bdfbb8 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h96899ae234960ff0
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:308
[INFO] [stderr]   20:     0x559aa4be0192 - std::panicking::try::do_call::h7282716a91df5b37
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:381
[INFO] [stderr]   21:     0x559aa4be513d - __rust_try
[INFO] [stderr]   22:     0x559aa4bdffad - std::panicking::try::h601463ea4039200d
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:345
[INFO] [stderr]   23:     0x559aa4bdfd88 - std::panic::catch_unwind::hfc97c9ee193cf795
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:382
[INFO] [stderr]   24:     0x559aa4bbbded - std::thread::Builder::spawn_unchecked::{{closure}}::hdf38f06e7c2259d9
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/thread/mod.rs:463
[INFO] [stderr]   25:     0x559aa4be0a4e - core::ops::function::FnOnce::call_once{{vtable.shim}}::h333ba0c282409311
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:227
[INFO] [stderr]   26:     0x559aa4c4c81a - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::hd4d30e37db281e8f
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/boxed.rs:1042
[INFO] [stderr]   27:     0x559aa4c4c81a - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h019185a215ba16e4
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/boxed.rs:1042
[INFO] [stderr]   28:     0x559aa4c4c81a - std::sys::unix::thread::Thread::new::thread_start::h33c6d7cf25f9291f
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys/unix/thread.rs:87
[INFO] [stderr]   29:     0x7f1eb214c609 - start_thread
[INFO] [stderr]   30:     0x7f1eb23d7103 - clone
[INFO] [stderr]   31:                0x0 - <unknown>
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x559aa4c43bf0 - std::backtrace_rs::backtrace::libunwind::trace::h7cf3ca97bd83fbab
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stderr]    1:     0x559aa4c43bf0 - std::backtrace_rs::backtrace::trace_unsynchronized::h5a69c674b2d9ea5c
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x559aa4c43bf0 - std::sys_common::backtrace::_print_fmt::hdf72478dfcb50678
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:79
[INFO] [stderr]    3:     0x559aa4c43bf0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1e0bdbb35e83deca
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:58
[INFO] [stderr]    4:     0x559aa4c65f2c - core::fmt::write::he67f9b17bcb7ee73
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/fmt/mod.rs:1080
[INFO] [stderr]    5:     0x559aa4c404c2 - std::io::Write::write_fmt::hac97d5cb5753e2ec
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/io/mod.rs:1516
[INFO] [stderr]    6:     0x559aa4c4610d - std::sys_common::backtrace::_print::haa20918e28a126c5
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:61
[INFO] [stderr]    7:     0x559aa4c4610d - std::sys_common::backtrace::print::h49e772a4873d9076
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:48
[INFO] [stdout] test iter::take_exactly::test_take_exactly ... ok
[INFO] [stderr]    8:     0x559aa4c4610d - std::panicking::default_hook::{{closure}}::hb218b305d15e3f11
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:208
[INFO] [stderr]    9:     0x559aa4c45db8 - std::panicking::default_hook::h63997b7b949e1ce0
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:227
[INFO] [stderr]   10:     0x559aa4c467f1 - std::panicking::rust_panic_with_hook::hb54f09ccadf64bd3
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:577
[INFO] [stderr]   11:     0x559aa4c46399 - std::panicking::begin_panic_handler::{{closure}}::h8b43445b254eeb30
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:484
[INFO] [stderr]   12:     0x559aa4c4407c - std::sys_common::backtrace::__rust_end_short_backtrace::hacd691450edfeae0
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:153
[INFO] [stderr]   13:     0x559aa4c46359 - rust_begin_unwind
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:483
[INFO] [stderr]   14:     0x559aa4c4630b - std::panicking::begin_panic_fmt::hef75366dd3a9de61
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:437
[INFO] [stderr]   15:     0x559aa4bed89d - <grabbag::iter::take_exactly::TakeExactly<It> as core::iter::traits::iterator::Iterator>::next::h6620a6a7d77464ec
[INFO] [stderr]                                at /opt/rustwide/workdir/src/iter/take_exactly.rs:67
[INFO] [stderr]   16:     0x559aa4badd6b - alloc::vec::Vec<T>::extend_desugared::hb7cdf7a34a8d2723
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/vec.rs:2433
[INFO] [stderr]   17:     0x559aa4bafb97 - <alloc::vec::Vec<T> as alloc::vec::SpecExtend<T,I>>::spec_extend::h89ba39e9304b6a48
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/vec.rs:2356
[INFO] [stderr]   18:     0x559aa4bb2407 - <alloc::vec::Vec<T> as alloc::vec::SpecFromIterNested<T,I>>::from_iter::h1bf995b1c77e70a4
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/vec.rs:2139
[INFO] [stderr]   19:     0x559aa4bb0bfa - <alloc::vec::Vec<T> as alloc::vec::SpecFromIter<T,I>>::from_iter::h2cbe0d69d8fb2d59
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/vec.rs:2162
[INFO] [stderr]   20:     0x559aa4bb3a27 - <alloc::vec::Vec<T> as core::iter::traits::collect::FromIterator<T>>::from_iter::h05427cc2e27a5562
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/vec.rs:2002
[INFO] [stderr]   21:     0x559aa4beb8aa - core::iter::traits::iterator::Iterator::collect::hbe91f10f68427fab
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/iter/traits/iterator.rs:1670
[INFO] [stderr]   22:     0x559aa4bee43e - grabbag::iter::take_exactly::test_take_exactly::{{closure}}::hf8fdf0ae58c8792f
[INFO] [stderr]                                at /opt/rustwide/workdir/src/iter/take_exactly.rs:90
[INFO] [stderr]   23:     0x559aa4bdfcb8 - std::sys_common::backtrace::__rust_begin_short_backtrace::ha538d2149cdf7e76
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:137
[INFO] [stderr]   24:     0x559aa4bbc005 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::hb2b296ec95d07243
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/thread/mod.rs:464
[INFO] [stderr]   25:     0x559aa4bdfbe8 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::ha6f6c145e219fa1e
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:308
[INFO] [stderr]   26:     0x559aa4be01f2 - std::panicking::try::do_call::h75f51fd6df90e52a
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:381
[INFO] [stderr]   27:     0x559aa4be513d - __rust_try
[INFO] [stderr]   28:     0x559aa4be00cd - std::panicking::try::hd54e0e7e8bd671f2
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:345
[INFO] [stderr]   29:     0x559aa4bdfd48 - std::panic::catch_unwind::h8ad9536bad3c506a
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:382
[INFO] [stderr]   30:     0x559aa4bbbafd - std::thread::Builder::spawn_unchecked::{{closure}}::hc9419be3713fd574
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/thread/mod.rs:463
[INFO] [stderr]   31:     0x559aa4be0a2e - core::ops::function::FnOnce::call_once{{vtable.shim}}::h17f03736f8b7c6d9
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:227
[INFO] [stderr]   32:     0x559aa4c4c81a - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::hd4d30e37db281e8f
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/boxed.rs:1042
[INFO] [stderr]   33:     0x559aa4c4c81a - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h019185a215ba16e4
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/alloc/src/boxed.rs:1042
[INFO] [stderr]   34:     0x559aa4c4c81a - std::sys::unix::thread::Thread::new::thread_start::h33c6d7cf25f9291f
[INFO] [stderr]                                at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys/unix/thread.rs:87
[INFO] [stderr]   35:     0x7f1eb214c609 - start_thread
[INFO] [stderr]   36:     0x7f1eb23d7103 - clone
[INFO] [stderr]   37:                0x0 - <unknown>
[INFO] [stdout] test iter::skip_exactly::test_skip_exactly ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 22 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests grabbag
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test src/iter/accumulate.rs - iter::accumulate::AccumulateIterator::accumulate (line 34) ... ok
[INFO] [stdout] test src/iter/group_by.rs - iter::group_by::GroupByIterator::group_by (line 23) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "e833c9340343e2f5dc5e49d1eba42bc41383adc9f8efa9989eaf670a5d5de2c2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e833c9340343e2f5dc5e49d1eba42bc41383adc9f8efa9989eaf670a5d5de2c2", kill_on_drop: false }`
[INFO] [stdout] e833c9340343e2f5dc5e49d1eba42bc41383adc9f8efa9989eaf670a5d5de2c2
