[INFO] crate ffi_helpers 0.1.0 is already in cache
[INFO] extracting crate ffi_helpers 0.1.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/ffi_helpers/0.1.0
[INFO] extracting crate ffi_helpers 0.1.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ffi_helpers/0.1.0
[INFO] validating manifest of ffi_helpers-0.1.0 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ffi_helpers-0.1.0 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ffi_helpers-0.1.0
[INFO] finished frobbing ffi_helpers-0.1.0
[INFO] frobbed toml for ffi_helpers-0.1.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/ffi_helpers/0.1.0/Cargo.toml
[INFO] started frobbing ffi_helpers-0.1.0
[INFO] finished frobbing ffi_helpers-0.1.0
[INFO] frobbed toml for ffi_helpers-0.1.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/ffi_helpers/0.1.0/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ffi_helpers-0.1.0 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/ffi_helpers/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 3f1ef069bda9d90b83f2bc8306d2ec72540bec7970afadd2f52c9ccde282cd49
[INFO] running `"docker" "start" "-a" "3f1ef069bda9d90b83f2bc8306d2ec72540bec7970afadd2f52c9ccde282cd49"`
[INFO] [stderr]    Compiling ffi_helpers v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: lint `private_no_mangle_fns` has been removed: `no longer a warning, #[no_mangle] functions always exported`
[INFO] [stderr]    --> src/task.rs:440:9
[INFO] [stderr]     |
[INFO] [stderr] 440 | #[allow(private_no_mangle_fns)]
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(renamed_and_removed_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/panic.rs:81:37
[INFO] [stderr]    |
[INFO] [stderr] 81 | pub fn recover_panic_message(e: Box<Any + Send + 'static>) -> Option<String> {
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Any + Send + 'static`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.17s
[INFO] running `"docker" "inspect" "3f1ef069bda9d90b83f2bc8306d2ec72540bec7970afadd2f52c9ccde282cd49"`
[INFO] running `"docker" "rm" "-f" "3f1ef069bda9d90b83f2bc8306d2ec72540bec7970afadd2f52c9ccde282cd49"`
[INFO] [stdout] 3f1ef069bda9d90b83f2bc8306d2ec72540bec7970afadd2f52c9ccde282cd49
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/ffi_helpers/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] d801935f9937e0a35af48d39cd693a6b38fa902c0a8ede3fda3fe4646a3daa28
[INFO] running `"docker" "start" "-a" "d801935f9937e0a35af48d39cd693a6b38fa902c0a8ede3fda3fe4646a3daa28"`
[INFO] [stderr]    Compiling ffi_helpers v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: lint `private_no_mangle_fns` has been removed: `no longer a warning, #[no_mangle] functions always exported`
[INFO] [stderr]    --> src/task.rs:440:9
[INFO] [stderr]     |
[INFO] [stderr] 440 | #[allow(private_no_mangle_fns)]
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(renamed_and_removed_lints)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/panic.rs:81:37
[INFO] [stderr]    |
[INFO] [stderr] 81 | pub fn recover_panic_message(e: Box<Any + Send + 'static>) -> Option<String> {
[INFO] [stderr]    |                                     ^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Any + Send + 'static`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.16s
[INFO] running `"docker" "inspect" "d801935f9937e0a35af48d39cd693a6b38fa902c0a8ede3fda3fe4646a3daa28"`
[INFO] running `"docker" "rm" "-f" "d801935f9937e0a35af48d39cd693a6b38fa902c0a8ede3fda3fe4646a3daa28"`
[INFO] [stdout] d801935f9937e0a35af48d39cd693a6b38fa902c0a8ede3fda3fe4646a3daa28
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-3/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/ffi_helpers/0.1.0:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 798a533c16165c8bccd0f962f79ac84baf1171bdfb9438551951447d74af06ad
[INFO] running `"docker" "start" "-a" "798a533c16165c8bccd0f962f79ac84baf1171bdfb9438551951447d74af06ad"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/ffi_helpers-53b635429e649abb
[INFO] [stdout] 
[INFO] [stdout] running 11 tests
[INFO] [stdout] test nullable::tests::can_detect_non_null_pointers ... ok
[INFO] [stdout] test nullable::tests::can_detect_null_pointers ... ok
[INFO] [stdout] test nullable::tests::null_pointer_check_on_garbage_address_doesnt_segfault ... ok
[INFO] [stdout] test error_handling::tests::update_the_error ... ok
[INFO] [stderr] thread '<unnamed>' panicked at 'Oops', src/task.rs:542:13
[INFO] [stdout] test task::tests::use_the_c_api ... ok
[INFO] [stdout] test error_handling::tests::write_the_last_error_message_into_a_buffer ... ok
[INFO] [stdout] test error_handling::tests::get_the_last_error_messages_length ... ok
[INFO] [stdout] test error_handling::tests::take_the_last_error ... ok
[INFO] [stdout] test panic::tests::able_to_catch_panics_and_recover_the_panic_message ... ok
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x5606e08e825b - backtrace::backtrace::libunwind::trace::hfe5db90796807973
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x5606e08e825b - backtrace::backtrace::trace_unsynchronized::h34b865a835594335
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x5606e08e825b - std::sys_common::backtrace::_print::h527254ae44989167
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x5606e08e825b - std::sys_common::backtrace::print::he85dd5ddddf46503
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x5606e08e825b - std::panicking::default_hook::{{closure}}::h847a2eb38b396f14
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x5606e08e7f37 - std::panicking::default_hook::h2ca0f9a30a0e206b
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x5606e08e89d0 - std::panicking::rust_panic_with_hook::hffcefc09751839d1
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x5606e08af0d8 - std::panicking::begin_panic::h13623e43fef7a46b
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panicking.rs:411
[INFO] [stderr]    8:     0x5606e085c465 - <ffi_helpers::task::tests::PanicTask as ffi_helpers::task::Task>::run::hb06d5d3bc141ec0d
[INFO] [stderr]                                at src/task.rs:542
[INFO] [stderr]    9:     0x5606e0839b3d - ffi_helpers::task::TaskHandle<T>::spawn::{{closure}}::{{closure}}::h0b80e8077fa47fb2
[INFO] [stderr]                                at src/task.rs:383
[INFO] [stderr]   10:     0x5606e0860926 - std::panicking::try::do_call::h92398efdba488202
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panicking.rs:296
[INFO] [stderr]   11:     0x5606e08eafca - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   12:     0x5606e0860124 - std::panicking::try::h16f63bda3dd97c00
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panicking.rs:275
[INFO] [stderr]   13:     0x5606e08418bb - std::panic::catch_unwind::hf2fc8700f572053a
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panic.rs:394
[INFO] [stderr]   14:     0x5606e0845a6b - ffi_helpers::panic::catch_panic::h20b6122d3f267d6d
[INFO] [stderr]                                at src/panic.rs:42
[INFO] [stderr]   15:     0x5606e0839e74 - ffi_helpers::task::TaskHandle<T>::spawn::{{closure}}::hed0bca3f51797656
[INFO] [stderr]                                at src/task.rs:383
[INFO] [stderr]   16:     0x5606e08415a8 - std::sys_common::backtrace::__rust_begin_short_backtrace::h5103dab319904465
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/sys_common/backtrace.rs:77
[INFO] [stderr]   17:     0x5606e085ed55 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h4616756111aa2843
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/thread/mod.rs:470
[INFO] [stderr]   18:     0x5606e0841208 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h00fa09b4b8ed9956
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panic.rs:315
[INFO] [stderr]   19:     0x5606e08609b0 - std::panicking::try::do_call::hc2a9a7c372381f2f
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panicking.rs:296
[INFO] [stderr]   20:     0x5606e08eafca - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   21:     0x5606e0860680 - std::panicking::try::hd827a0a6bfd3e203
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panicking.rs:275
[INFO] [stderr]   22:     0x5606e0841858 - std::panic::catch_unwind::heb6be2672ecab288
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panic.rs:394
[INFO] [stderr]   23:     0x5606e085e832 - std::thread::Builder::spawn_unchecked::{{closure}}::ha4aee7383a7a28dd
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/thread/mod.rs:469
[INFO] [stderr]   24:     0x5606e0847423 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h2c87e760cf5750c0
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libcore/ops/function.rs:231
[INFO] [stderr]   25:     0x5606e08dde3f - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h42806b83647d4c79
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/liballoc/boxed.rs:746
[INFO] [stderr]   26:     0x5606e08ea720 - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h83c921c8e826dd1d
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/liballoc/boxed.rs:746
[INFO] [stderr]   27:     0x5606e08ea720 - std::sys_common::thread::start_thread::h2613204ce513782e
[INFO] [stderr]                                at src/libstd/sys_common/thread.rs:13
[INFO] [stderr]   28:     0x5606e08ea720 - std::sys::unix::thread::Thread::new::thread_start::h4570080769500bcd
[INFO] [stderr]                                at src/libstd/sys/unix/thread.rs:79
[INFO] [stderr]   29:     0x7f737cf574a4 - start_thread
[INFO] [stderr]   30:     0x7f737ca82d0f - __clone
[INFO] [stderr]   31:                0x0 - <unknown>
[INFO] [stdout] test task::tests::task_can_catch_panic_messages ... ok
[INFO] [stdout] test task::tests::spawn_a_task ... FAILED
[INFO] [stderr] error: test failed, to rerun pass '--lib'
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- task::tests::spawn_a_task stdout ----
[INFO] [stdout] thread 'task::tests::spawn_a_task' panicked at 'assertion failed: 9 <= got && got <= 12', src/task.rs:481:9
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5606e08e825b - backtrace::backtrace::libunwind::trace::hfe5db90796807973
[INFO] [stdout]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88
[INFO] [stdout]    1:     0x5606e08e825b - backtrace::backtrace::trace_unsynchronized::h34b865a835594335
[INFO] [stdout]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66
[INFO] [stdout]    2:     0x5606e08e825b - std::sys_common::backtrace::_print::h527254ae44989167
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stdout]    3:     0x5606e08e825b - std::sys_common::backtrace::print::he85dd5ddddf46503
[INFO] [stdout]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stdout]    4:     0x5606e08e825b - std::panicking::default_hook::{{closure}}::h847a2eb38b396f14
[INFO] [stdout]                                at src/libstd/panicking.rs:200
[INFO] [stdout]    5:     0x5606e08e7eca - std::panicking::default_hook::h2ca0f9a30a0e206b
[INFO] [stdout]                                at src/libstd/panicking.rs:211
[INFO] [stdout]    6:     0x5606e08e89d0 - std::panicking::rust_panic_with_hook::hffcefc09751839d1
[INFO] [stdout]                                at src/libstd/panicking.rs:477
[INFO] [stdout]    7:     0x5606e08af0d8 - std::panicking::begin_panic::h13623e43fef7a46b
[INFO] [stdout]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panicking.rs:411
[INFO] [stdout]    8:     0x5606e085c6fa - ffi_helpers::task::tests::spawn_a_task::h0730aaa9843ec676
[INFO] [stdout]                                at src/task.rs:481
[INFO] [stdout]    9:     0x5606e085c4aa - ffi_helpers::task::tests::spawn_a_task::{{closure}}::h67c23550622e8b61
[INFO] [stdout]                                at src/task.rs:465
[INFO] [stdout]   10:     0x5606e08477ce - core::ops::function::FnOnce::call_once::hb76b0238e674771b
[INFO] [stdout]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libcore/ops/function.rs:231
[INFO] [stdout]   11:     0x5606e086c9ef - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h4a13ee3f0d7b4201
[INFO] [stdout]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/liballoc/boxed.rs:746
[INFO] [stdout]   12:     0x5606e08eafca - __rust_maybe_catch_panic
[INFO] [stdout]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stdout]   13:     0x5606e0886fe8 - std::panicking::try::h5a93466ab2078586
[INFO] [stdout]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panicking.rs:275
[INFO] [stdout]   14:     0x5606e0886fe8 - std::panic::catch_unwind::h752cbeae6ac7bdea
[INFO] [stdout]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panic.rs:394
[INFO] [stdout]   15:     0x5606e0886fe8 - test::run_test::run_test_inner::{{closure}}::h206c9c16936edaca
[INFO] [stdout]                                at src/libtest/lib.rs:1466
[INFO] [stdout]   16:     0x5606e0861e65 - std::sys_common::backtrace::__rust_begin_short_backtrace::hc7edbac42990d270
[INFO] [stdout]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/sys_common/backtrace.rs:77
[INFO] [stdout]   17:     0x5606e0865f25 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::he53c58e7adee87af
[INFO] [stdout]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/thread/mod.rs:470
[INFO] [stdout]   18:     0x5606e0865f25 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h1aff7c42b6bb3726
[INFO] [stdout]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panic.rs:315
[INFO] [stdout]   19:     0x5606e0865f25 - std::panicking::try::do_call::h41f8559f88100f6c
[INFO] [stdout]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panicking.rs:296
[INFO] [stdout]   20:     0x5606e08eafca - __rust_maybe_catch_panic
[INFO] [stdout]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stdout]   21:     0x5606e0866622 - std::panicking::try::hb54ba808181fe352
[INFO] [stdout]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panicking.rs:275
[INFO] [stdout]   22:     0x5606e0866622 - std::panic::catch_unwind::h555ccf4e835e93f4
[INFO] [stdout]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panic.rs:394
[INFO] [stdout]   23:     0x5606e0866622 - std::thread::Builder::spawn_unchecked::{{closure}}::hd4dae6e19e80fc1a
[INFO] [stdout]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/thread/mod.rs:469
[INFO] [stdout]   24:     0x5606e0866622 - core::ops::function::FnOnce::call_once{{vtable.shim}}::hc35d54c07710e1a1
[INFO] [stdout]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libcore/ops/function.rs:231
[INFO] [stdout]   25:     0x5606e08dde3f - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h42806b83647d4c79
[INFO] [stdout]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/liballoc/boxed.rs:746
[INFO] [stdout]   26:     0x5606e08ea720 - <alloc::boxed::Box<F> as core::ops::function::FnOnce<A>>::call_once::h83c921c8e826dd1d
[INFO] [stdout]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/liballoc/boxed.rs:746
[INFO] [stdout]   27:     0x5606e08ea720 - std::sys_common::thread::start_thread::h2613204ce513782e
[INFO] [stdout]                                at src/libstd/sys_common/thread.rs:13
[INFO] [stdout]   28:     0x5606e08ea720 - std::sys::unix::thread::Thread::new::thread_start::h4570080769500bcd
[INFO] [stdout]                                at src/libstd/sys/unix/thread.rs:79
[INFO] [stdout]   29:     0x7f737cf574a4 - start_thread
[INFO] [stdout]   30:     0x7f737ca82d0f - __clone
[INFO] [stdout]   31:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     task::tests::spawn_a_task
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 10 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "798a533c16165c8bccd0f962f79ac84baf1171bdfb9438551951447d74af06ad"`
[INFO] running `"docker" "rm" "-f" "798a533c16165c8bccd0f962f79ac84baf1171bdfb9438551951447d74af06ad"`
[INFO] [stdout] 798a533c16165c8bccd0f962f79ac84baf1171bdfb9438551951447d74af06ad