[INFO] crate blackhole 0.16.0 is already in cache
[INFO] extracting crate blackhole 0.16.0 into work/ex/beta-1.38-1/sources/1.37.0/reg/blackhole/0.16.0
[INFO] extracting crate blackhole 0.16.0 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/blackhole/0.16.0
[INFO] validating manifest of blackhole-0.16.0 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 blackhole-0.16.0 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 blackhole-0.16.0
[INFO] finished frobbing blackhole-0.16.0
[INFO] frobbed toml for blackhole-0.16.0 written to work/ex/beta-1.38-1/sources/1.37.0/reg/blackhole/0.16.0/Cargo.toml
[INFO] started frobbing blackhole-0.16.0
[INFO] finished frobbing blackhole-0.16.0
[INFO] frobbed toml for blackhole-0.16.0 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/blackhole/0.16.0/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 blackhole-0.16.0 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-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/blackhole/0.16.0:/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] ff4360ef883aa728ce70dfb0621eaa427d5ec0f81f3968f2dec83db297cefcee
[INFO] running `"docker" "start" "-a" "ff4360ef883aa728ce70dfb0621eaa427d5ec0f81f3968f2dec83db297cefcee"`
[INFO] [stderr]    Compiling blackhole v0.16.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/job.rs:16:37
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn run(&mut self) -> Option<Box<Job>>;
[INFO] [stderr]    |                                     ^^^ help: use `dyn`: `dyn Job`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/job.rs:71:37
[INFO] [stderr]    |
[INFO] [stderr] 71 |     fn run(&mut self) -> Option<Box<Job>> {
[INFO] [stderr]    |                                     ^^^ help: use `dyn`: `dyn Job`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.41s
[INFO] running `"docker" "inspect" "ff4360ef883aa728ce70dfb0621eaa427d5ec0f81f3968f2dec83db297cefcee"`
[INFO] running `"docker" "rm" "-f" "ff4360ef883aa728ce70dfb0621eaa427d5ec0f81f3968f2dec83db297cefcee"`
[INFO] [stdout] ff4360ef883aa728ce70dfb0621eaa427d5ec0f81f3968f2dec83db297cefcee
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/blackhole/0.16.0:/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] d80736ceb04e81c6b4b2b36877195410270559359d225816fd66ca18c71f4901
[INFO] running `"docker" "start" "-a" "d80736ceb04e81c6b4b2b36877195410270559359d225816fd66ca18c71f4901"`
[INFO] [stderr]    Compiling blackhole v0.16.0 (/opt/crater/workdir)
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/job.rs:16:37
[INFO] [stderr]    |
[INFO] [stderr] 16 |     fn run(&mut self) -> Option<Box<Job>>;
[INFO] [stderr]    |                                     ^^^ help: use `dyn`: `dyn Job`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/job.rs:71:37
[INFO] [stderr]    |
[INFO] [stderr] 71 |     fn run(&mut self) -> Option<Box<Job>> {
[INFO] [stderr]    |                                     ^^^ help: use `dyn`: `dyn Job`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> tests/root.rs:25:37
[INFO] [stderr]    |
[INFO] [stderr] 25 |     fn run(&mut self) -> Option<Box<Job>> {
[INFO] [stderr]    |                                     ^^^ help: use `dyn`: `dyn Job`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.76s
[INFO] running `"docker" "inspect" "d80736ceb04e81c6b4b2b36877195410270559359d225816fd66ca18c71f4901"`
[INFO] running `"docker" "rm" "-f" "d80736ceb04e81c6b4b2b36877195410270559359d225816fd66ca18c71f4901"`
[INFO] [stdout] d80736ceb04e81c6b4b2b36877195410270559359d225816fd66ca18c71f4901
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-7/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/reg/blackhole/0.16.0:/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] ff1e007d1c9d31f2ec988e2074a21fdabcfee67da16a341f2ed0b8d0ba336b00
[INFO] running `"docker" "start" "-a" "ff1e007d1c9d31f2ec988e2074a21fdabcfee67da16a341f2ed0b8d0ba336b00"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/blackhole-76f5c7a7fdb4f432
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test active_limit::test_active_limit ... ok
[INFO] [stdout] test job::test_one_time ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/root-e067eca159ed4369
[INFO] [stdout] test test_crate_version ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test stressing_blackhole ... ignored
[INFO] [stdout] test test_get_online_processors ... ok
[INFO] [stdout] 0 + 1 = 1
[INFO] [stderr] thread '<unnamed>' panicked at 'Test panicking...', tests/root.rs:27:13
[INFO] [stderr] stack backtrace:
[INFO] [stdout] 1 + 3 = 4
[INFO] [stdout] #2 -> 6
[INFO] [stdout] 6 + 11 = 17
[INFO] [stderr]    0:     0x55f61602103b - 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:     0x55f61602103b - 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:     0x55f61602103b - std::sys_common::backtrace::_print::h527254ae44989167
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x55f61602103b - std::sys_common::backtrace::print::he85dd5ddddf46503
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x55f61602103b - std::panicking::default_hook::{{closure}}::h847a2eb38b396f14
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x55f616020d17 - std::panicking::default_hook::h2ca0f9a30a0e206b
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x55f6160217b0 - std::panicking::rust_panic_with_hook::hffcefc09751839d1
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x55f615fd4614 - std::panicking::begin_panic::h904b7336d07fd57f
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panicking.rs:411
[INFO] [stderr]    8:     0x55f615fb795a - <root::Task as blackhole::job::Job>::run::h772479d36a74fbde
[INFO] [stderr]                                at tests/root.rs:27
[INFO] [stderr]    9:     0x55f615f84d9d - blackhole::job::run_to_end::h511a1ad4016fbd13
[INFO] [stderr]                                at /opt/crater/workdir/src/job.rs:22
[INFO] [stderr]   10:     0x55f615f96678 - blackhole::root::spawn_job_runner::{{closure}}::hc729ea3ce43cac75
[INFO] [stderr]                                at /opt/crater/workdir/src/root.rs:257
[INFO] [stderr]   11:     0x55f615f7fbfe - std::sys_common::backtrace::__rust_begin_short_backtrace::h3efd60b00f0a63cf
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/sys_common/backtrace.rs:77
[INFO] [stderr]   12:     0x55f615fc9ac1 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::ha5f1231168dc6656
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/thread/mod.rs:470
[INFO] [stderr]   13:     0x55f615f7fa41 - <std::panic::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::hb65847694037be94
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panic.rs:315
[INFO] [stderr]   14:     0x55f615fd4eca - std::panicking::try::do_call::hd0e5076513cbf01c
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panicking.rs:296
[INFO] [stderr]   15:     0x55f616023dba - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:82
[INFO] [stderr]   16:     0x55f615fd4c9f - std::panicking::try::h8b991c0e5c50ce45
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panicking.rs:275
[INFO] [stderr]   17:     0x55f615f80ae1 - std::panic::catch_unwind::h618e915303fc067c
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/panic.rs:394
[INFO] [stderr]   18:     0x55f615fc9882 - std::thread::Builder::spawn_unchecked::{{closure}}::hdd2046e120d58bd6
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libstd/thread/mod.rs:469
[INFO] [stderr]   19:     0x55f615facb13 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h5195ab2f1764d84c
[INFO] [stderr]                                at /rustc/eae3437dfe991621e8afdc82734f4a172d7ddf9b/src/libcore/ops/function.rs:231
[INFO] [stderr]   20:     0x55f616016bff - <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]   21:     0x55f616023480 - <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]   22:     0x55f616023480 - std::sys_common::thread::start_thread::h2613204ce513782e
[INFO] [stderr]                                at src/libstd/sys_common/thread.rs:13
[INFO] [stderr]   23:     0x55f616023480 - std::sys::unix::thread::Thread::new::thread_start::h4570080769500bcd
[INFO] [stderr]                                at src/libstd/sys/unix/thread.rs:79
[INFO] [stderr]   24:     0x7f82723104a4 - start_thread
[INFO] [stderr]   25:     0x7f8271e3bd0f - __clone
[INFO] [stderr]   26:                0x0 - <unknown>
[INFO] [stdout] #2 -> 27
[INFO] [stdout] #10 -> 27
[INFO] [stdout] 27 + 9 = 36
[INFO] [stdout] #12 -> 44
[INFO] [stdout] #4 -> 44
[INFO] [stdout] #8 -> 44
[INFO] [stdout] 44 + 7 = 51
[INFO] [stdout] #6 -> 57
[INFO] [stdout] 57 + 5 = 62
[INFO] [stdout] #10 -> 66
[INFO] [stdout] #4 -> 66
[INFO] [stdout] #8 -> 66
[INFO] [stdout] #6 -> 66
[INFO] [stdout] test tests ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 2 passed; 0 failed; 1 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests blackhole
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/lib.rs - get_online_processors (line 153) ... ok
[INFO] [stdout] test src/job.rs - job::OneTime (line 36) ... ok
[INFO] [stdout] test src/lib.rs -  (line 35) ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 3 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "ff1e007d1c9d31f2ec988e2074a21fdabcfee67da16a341f2ed0b8d0ba336b00"`
[INFO] running `"docker" "rm" "-f" "ff1e007d1c9d31f2ec988e2074a21fdabcfee67da16a341f2ed0b8d0ba336b00"`
[INFO] [stdout] ff1e007d1c9d31f2ec988e2074a21fdabcfee67da16a341f2ed0b8d0ba336b00