[INFO] crate carboxyl 0.2.1 is already in cache
[INFO] extracting crate carboxyl 0.2.1 into work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/carboxyl/0.2.1
[INFO] extracting crate carboxyl 0.2.1 into work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/carboxyl/0.2.1
[INFO] validating manifest of carboxyl-0.2.1 on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of carboxyl-0.2.1 on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing carboxyl-0.2.1
[INFO] finished frobbing carboxyl-0.2.1
[INFO] frobbed toml for carboxyl-0.2.1 written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/carboxyl/0.2.1/Cargo.toml
[INFO] started frobbing carboxyl-0.2.1
[INFO] finished frobbing carboxyl-0.2.1
[INFO] frobbed toml for carboxyl-0.2.1 written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/reg/carboxyl/0.2.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing carboxyl-0.2.1 against master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-2/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/carboxyl/0.2.1:/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=forbid" "-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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "build" "--frozen"`
[INFO] [stdout] ad507fe7bdf94a7ccd38fa31118681704fd02c322910dcf110548fe145c1a51e
[INFO] running `"docker" "start" "-a" "ad507fe7bdf94a7ccd38fa31118681704fd02c322910dcf110548fe145c1a51e"`
[INFO] [stderr]    Compiling skeptic v0.6.1
[INFO] [stderr]    Compiling carboxyl v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: missing documentation for macro
[INFO] [stderr]   --> src/lift.rs:39:1
[INFO] [stderr]    |
[INFO] [stderr] 39 | macro_rules! lift {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]   --> src/lib.rs:136:9
[INFO] [stderr]    |
[INFO] [stderr] 136| #![warn(missing_docs)]
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.60s
[INFO] running `"docker" "inspect" "ad507fe7bdf94a7ccd38fa31118681704fd02c322910dcf110548fe145c1a51e"`
[INFO] running `"docker" "rm" "-f" "ad507fe7bdf94a7ccd38fa31118681704fd02c322910dcf110548fe145c1a51e"`
[INFO] [stdout] ad507fe7bdf94a7ccd38fa31118681704fd02c322910dcf110548fe145c1a51e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-2/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/carboxyl/0.2.1:/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=forbid" "-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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] fa4b50f53b390088dbc4c9d0822fafd43ee5a19598204768c29b483aa18ea8e1
[INFO] running `"docker" "start" "-a" "fa4b50f53b390088dbc4c9d0822fafd43ee5a19598204768c29b483aa18ea8e1"`
[INFO] [stderr]    Compiling carboxyl v0.2.1 (/opt/crater/workdir)
[INFO] [stderr] warning: missing documentation for macro
[INFO] [stderr]   --> src/lift.rs:39:1
[INFO] [stderr]    |
[INFO] [stderr] 39 | macro_rules! lift {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr] note: lint level defined here
[INFO] [stderr]   --> src/lib.rs:136:9
[INFO] [stderr]    |
[INFO] [stderr] 136| #![warn(missing_docs)]
[INFO] [stderr]    |         ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.66s
[INFO] running `"docker" "inspect" "fa4b50f53b390088dbc4c9d0822fafd43ee5a19598204768c29b483aa18ea8e1"`
[INFO] running `"docker" "rm" "-f" "fa4b50f53b390088dbc4c9d0822fafd43ee5a19598204768c29b483aa18ea8e1"`
[INFO] [stdout] fa4b50f53b390088dbc4c9d0822fafd43ee5a19598204768c29b483aa18ea8e1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-2/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/reg/carboxyl/0.2.1:/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=forbid" "-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" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "test" "--frozen"`
[INFO] [stdout] 9827b314a665d0b529d558092b9c9fe2265179e93716d3c33d6fedd582ad74c2
[INFO] running `"docker" "start" "-a" "9827b314a665d0b529d558092b9c9fe2265179e93716d3c33d6fedd582ad74c2"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.06s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/carboxyl-c1b400741770853a
[INFO] [stdout] 
[INFO] [stdout] running 62 tests
[INFO] [stdout] test lift::test::lift4 ... ok
[INFO] [stdout] test pending::test::new_derefs_identical ... ok
[INFO] [stdout] test lift::test::lift3 ... ok
[INFO] [stdout] test lift::test::lift2_identical ... ok
[INFO] [stdout] test lift::test::lift2 ... ok
[INFO] [stdout] test lift::test::lift1 ... ok
[INFO] [stdout] test pending::test::updated_future ... ok
[INFO] [stdout] test lift::test::lift0 ... ok
[INFO] [stdout] test lift::test::lift0_equal_within_transaction ... ok
[INFO] [stdout] test pending::test::queue_does_not_affect_deref ... ok
[INFO] [stdout] test pending::test::new_future_identical ... ok
[INFO] [stdout] test pending::test::queue_affects_future ... ok
[INFO] [stdout] test pending::test::updated_deref ... ok
[INFO] [stdout] test signal::test::cyclic_snapshot_accum ... ok
[INFO] [stdout] test signal::test::clone ... ok
[INFO] [stdout] test signal::test::hold ... ok
[INFO] [stdout] test signal::test::cyclic_signal_intermediate ... ok
[INFO] [stdout] test signal::test::snapshot ... ok
[INFO] [stdout] test signal::test::hold_implicit_stream ... ok
[INFO] [stdout] test signal::test::snapshot_2 ... ok
[INFO] [stdout] test signal::test::snapshot_order_alternative ... ok
[INFO] [stdout] test signal::test::snapshot_lift_order_standard ... ok
[INFO] [stdout] test source::test::source_register_and_send ... ok
[INFO] [stdout] test source::test::source_unregister ... ok
[INFO] [stdout] test signal::test::snapshot_order_standard ... ok
[INFO] [stdout] test source::test::with_weak_no_error ... ok
[INFO] [stdout] test source::test::with_weak_disappeared ... ok
[INFO] [stdout] test stream::coalesce::tests::update_value_combines_new_value_using_reducer ... ok
[INFO] [stdout] test stream::coalesce::tests::update_value_puts_value_in_empty_mutex ... ok
[INFO] [stdout] test stream::test::chain_1 ... ok
[INFO] [stdout] test stream::test::chain_2 ... ok
[INFO] [stderr] thread '<unnamed>' panicked at 'explicit panic', src/source.rs:102:13
[INFO] [stderr] stack backtrace:
[INFO] [stdout] test stream::test::coalesce ... ok
[INFO] [stdout] test stream::test::filter_some ... ok
[INFO] [stdout] test stream::test::fold_race_condition ... ok
[INFO] [stderr]    0:     0x555affaf96b3 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::hb587d2734f1dc7c5
[INFO] [stderr]                                at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39
[INFO] [stderr]    1:     0x555affaf535b - std::sys_common::backtrace::_print::he39717f7cfbd122d
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:70
[INFO] [stderr]    2:     0x555affaf8316 - std::panicking::default_hook::{{closure}}::hb7f1ae5149814e5e
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:58
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    3:     0x555affaf8094 - std::panicking::default_hook::hc2b73d8ffc772b35
[INFO] [stderr]                                at src/libstd/panicking.rs:215
[INFO] [stderr]    4:     0x555affaf8a20 - std::panicking::rust_panic_with_hook::h625072734a147d22
[INFO] [stderr]                                at src/libstd/panicking.rs:478
[INFO] [stderr]    5:     0x555affac11d7 - std::panicking::begin_panic::h0d9efa062c938ac3
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/panicking.rs:412
[INFO] [stderr]    6:     0x555aff924fc4 - carboxyl::source::test::with_weak_poisoned::{{closure}}::h0cd90a6a67bdec0b
[INFO] [stderr]                                at src/source.rs:102
[INFO] [stderr]    7:     0x555aff865db2 - std::sys_common::backtrace::__rust_begin_short_backtrace::hbf4409575b3b6e25
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/sys_common/backtrace.rs:135
[INFO] [stderr]    8:     0x555aff912fdd - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::hb0d28dbc25f94e32
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/thread/mod.rs:469
[INFO] [stderr]    9:     0x555aff925d70 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hfbb460f30ae57b1a
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/panic.rs:309
[INFO] [stderr]   10:     0x555aff8672d4 - std::panicking::try::do_call::h3515b7724eed0b7a
[INFO] [stdout] test source::test::with_weak_poisoned ... ok
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/panicking.rs:297
[INFO] [stderr]   11:     0x555affafbc69 - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:92
[INFO] [stderr]   12:     0x555aff86669d - std::panicking::try::h859f97ded7186c9d
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/panicking.rs:276
[INFO] [stderr]   13:     0x555aff92aa82 - std::panic::catch_unwind::h673c1e4eed6c7490
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/panic.rs:388
[INFO] [stderr]   14:     0x555aff911305 - std::thread::Builder::spawn_unchecked::{{closure}}::h6dd0905261ab76c0
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/libstd/thread/mod.rs:468
[INFO] [stderr]   15:     0x555aff914ba6 - <F as alloc::boxed::FnBox<A>>::call_box::h4260f57664ad6ba3
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/liballoc/boxed.rs:734
[INFO] [stderr]   16:     0x555affafb38d - std::sys::unix::thread::Thread::new::thread_start::h60ff5f253b4125d5
[INFO] [stderr]                                at /rustc/c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/src/liballoc/boxed.rs:744
[INFO] [stderr]                                at src/libstd/sys_common/thread.rs:14
[INFO] [stderr]                                at src/libstd/sys/unix/thread.rs:81
[INFO] [stderr]   17:     0x7fd7bb18f493 - start_thread
[INFO] [stderr]   18:     0x7fd7bacbaace - __clone
[INFO] [stderr]   19:                0x0 - <unknown>
[INFO] [stdout] test signal::test::applicative_composition ... ok
[INFO] [stdout] test stream::test::map ... ok
[INFO] [stdout] test stream::test::merge ... ok
[INFO] [stdout] test signal::test::functor_composition ... ok
[INFO] [stdout] test signal::test::applicative_interchange ... ok
[INFO] [stdout] test signal::test::applicative_homomorphism ... ok
[INFO] [stdout] test signal::test::functor_identity ... ok
[INFO] [stdout] test stream::test::move_closure ... ok
[INFO] [stdout] test stream::test::sink ... ok
[INFO] [stdout] test stream::test::sink_feed_async ... ok
[INFO] [stdout] test stream::test::sink_send_async ... ok
[INFO] [stdout] test stream::test::sink_feed ... ok
[INFO] [stdout] test testing::test::signal_eq_algebraic ... ok
[INFO] [stdout] test testing::test::signal_eq_const ... ok
[INFO] [stdout] test testing::test::signal_eq_piecewise_const ... ok
[INFO] [stdout] test testing::test::stream_eq_never ... ok
[INFO] [stdout] test testing::test::stream_eq_same_sink ... ok
[INFO] [stdout] test transaction::test::commit_nested ... ok
[INFO] [stdout] test testing::test::stream_eq_algebraic ... ok
[INFO] [stdout] test transaction::test::commit_single ... ok
[INFO] [stdout] test transaction::test::commits_parallel ... ok
[INFO] [stdout] test signal::test::applicative_identity ... ok
[INFO] [stdout] test stream::test::functor_composition ... ok
[INFO] [stdout] test stream::test::functor_identity ... ok
[INFO] [stdout] test stream::test::monoid_left_identity ... ok
[INFO] [stdout] test stream::test::monoid_right_identity ... ok
[INFO] [stdout] test stream::test::monoid_associative ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 62 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/drag_drop-0ccedb28f6234bd9
[INFO] [stderr]      Running /opt/crater/target/debug/deps/integration-e055db1460a2a711
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test drag_drop_example ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 2 tests
[INFO] [stdout] test nested_transactions ... ok
[INFO] [stdout] test switch ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/skeptic-96b543540cfd8f58
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test readme_3 ... ok
[INFO] [stdout] test readme_2 ... ok
[INFO] [stdout] test readme_1 ... ok
[INFO] [stderr]    Doc-tests carboxyl
[INFO] [stdout] test readme_0 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 18 tests
[INFO] [stdout] test src/lib.rs -  (line 84) ... ok
[INFO] [stdout] test src/stream/mod.rs - stream::Sink (line 20) ... ok
[INFO] [stdout] test src/lift.rs - lift (line 15) ... ok
[INFO] [stdout] test src/lib.rs -  (line 96) ... ok
[INFO] [stdout] test src/lib.rs -  (line 54) ... ok
[INFO] [stdout] test src/lib.rs -  (line 72) ... ok
[INFO] [stdout] test src/signal.rs - signal::Signal<Signal<A>>::switch (line 269) ... ok
[INFO] [stdout] test src/signal.rs - signal::Signal<A>::snapshot (line 223) ... ok
[INFO] [stdout] test src/stream/mod.rs - stream::Sink (line 37) ... ok
[INFO] [stdout] test src/stream/mod.rs - stream::Sink (line 52) ... ok
[INFO] [stdout] test src/stream/mod.rs - stream::Stream<A>::filter (line 249) ... ok
[INFO] [stdout] test src/stream/mod.rs - stream::Stream<A>::hold (line 332) ... ok
[INFO] [stdout] test src/stream/mod.rs - stream::Stream<A>::fold (line 352) ... ok
[INFO] [stdout] test src/stream/mod.rs - stream::Stream<A>::map (line 221) ... ok
[INFO] [stdout] test src/stream/mod.rs - stream::Stream<A>::filter_map (line 269) ... ok
[INFO] [stdout] test src/stream/mod.rs - stream::Stream<A>::merge (line 291) ... ok
[INFO] [stdout] test src/stream/mod.rs - stream::Stream<Stream<A>>::switch (line 409) ... ok
[INFO] [stdout] test src/stream/mod.rs - stream::Stream<Option<A>>::filter_some (line 376) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 18 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "9827b314a665d0b529d558092b9c9fe2265179e93716d3c33d6fedd582ad74c2"`
[INFO] running `"docker" "rm" "-f" "9827b314a665d0b529d558092b9c9fe2265179e93716d3c33d6fedd582ad74c2"`
[INFO] [stdout] 9827b314a665d0b529d558092b9c9fe2265179e93716d3c33d6fedd582ad74c2