[INFO] crate grabbag 0.1.2 is already in cache [INFO] testing grabbag-0.1.2 against beta-2019-09-28 for beta-1.39-1 [INFO] extracting crate grabbag 0.1.2 into work/builds/worker-7/source [INFO] validating manifest of crates.io crate grabbag 0.1.2 on toolchain beta-2019-09-28 [INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"` [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 work/builds/worker-7/source/Cargo.toml [INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"` [INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"` [INFO] [stdout] 8902d54f6d506dc566f5a00ca9a994c742265902c4c466f216d3943e3bb74eaa [INFO] running `"docker" "start" "-a" "8902d54f6d506dc566f5a00ca9a994c742265902c4c466f216d3943e3bb74eaa"` [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 0.88s [INFO] running `"docker" "inspect" "8902d54f6d506dc566f5a00ca9a994c742265902c4c466f216d3943e3bb74eaa"` [INFO] running `"docker" "rm" "-f" "8902d54f6d506dc566f5a00ca9a994c742265902c4c466f216d3943e3bb74eaa"` [INFO] [stdout] 8902d54f6d506dc566f5a00ca9a994c742265902c4c466f216d3943e3bb74eaa [INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen" "--no-run"` [INFO] [stdout] f86b78851b73b3448a07c4bfa02944e1e71573454a70630b514db0203939ae0f [INFO] running `"docker" "start" "-a" "f86b78851b73b3448a07c4bfa02944e1e71573454a70630b514db0203939ae0f"` [INFO] [stderr] Compiling grabbag v0.1.2 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused return value of `std::iter::Iterator::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::>(); }).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 `std::iter::Iterator::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::>(); }).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] Finished dev [unoptimized + debuginfo] target(s) in 1.42s [INFO] running `"docker" "inspect" "f86b78851b73b3448a07c4bfa02944e1e71573454a70630b514db0203939ae0f"` [INFO] running `"docker" "rm" "-f" "f86b78851b73b3448a07c4bfa02944e1e71573454a70630b514db0203939ae0f"` [INFO] [stdout] f86b78851b73b3448a07c4bfa02944e1e71573454a70630b514db0203939ae0f [INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-7/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "test" "--frozen"` [INFO] [stdout] 5d57703c657dcf072a8becbba07a3c10f3d03e4aad191487d276b4af3734324d [INFO] running `"docker" "start" "-a" "5d57703c657dcf072a8becbba07a3c10f3d03e4aad191487d276b4af3734324d"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.03s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/grabbag-30e5281334a9806f [INFO] [stdout] [INFO] [stdout] running 22 tests [INFO] [stdout] test iter::accumulate::test_accumulate_unwrap ... ok [INFO] [stderr] thread '' 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 ... ok [INFO] [stderr] stack backtrace: [INFO] [stdout] test iter::cartesian_product::test_cartesian_product ... ok [INFO] [stdout] test iter::clone_each::test_clone_each ... ok [INFO] [stdout] test iter::fold::test_foldl_map ... ok [INFO] [stdout] test iter::fold::test_foldl ... ok [INFO] [stdout] test iter::intersperse::test_intersperse ... ok [INFO] [stdout] test iter::group_by::test_group_by ... ok [INFO] [stdout] test iter::fold::test_foldr ... ok [INFO] [stdout] test iter::round_robin::test_round_robin ... ok [INFO] [stdout] test iter::pad_tail_to::test_pad_tail_to ... ok [INFO] [stdout] test iter::skip_exactly::test_skip ... 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::sorted::test_sorted ... ok [INFO] [stdout] test iter::sorted::test_sorted_by ... ok [INFO] [stderr] thread '' panicked at 'take_exactly expected 1 more elements from iterator, but ran out', src/iter/take_exactly.rs:67:25 [INFO] [stdout] test iter::stride::test_stride ... ok [INFO] [stderr] note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace. [INFO] [stdout] test iter::take_exactly::test_take ... ok [INFO] [stdout] test iter::tee::test_tee ... ok [INFO] [stdout] test iter::zip_longest::test_zip_longest ... ok [INFO] [stdout] test iter::take_exactly::test_take_exactly ... ok [INFO] [stderr] 0: 0x55fabb27ed34 - backtrace::backtrace::libunwind::trace::hf625d18232cbbbd4 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x55fabb27ed34 - backtrace::backtrace::trace_unsynchronized::h41d74150fc6ff542 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x55fabb27ed34 - std::sys_common::backtrace::_print_fmt::h85d37830c667a1f9 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:76 [INFO] [stderr] 3: 0x55fabb27ed34 - ::fmt::h2b7ac01d5feaf9b2 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:60 [INFO] [stderr] 4: 0x55fabb299c6c - core::fmt::write::h7fd0d904495c035f [INFO] [stderr] at src/libcore/fmt/mod.rs:1030 [INFO] [stderr] 5: 0x55fabb27c8a7 - std::io::Write::write_fmt::h663e4bf63637c947 [INFO] [stderr] at src/libstd/io/mod.rs:1412 [INFO] [stderr] 6: 0x55fabb281245 - std::sys_common::backtrace::_print::h4c743f7c274a5a74 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:64 [INFO] [stderr] 7: 0x55fabb281245 - std::sys_common::backtrace::print::ha5c4f4bf03800d4d [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stderr] 8: 0x55fabb281245 - std::panicking::default_hook::{{closure}}::h8b842185774c09e6 [INFO] [stderr] at src/libstd/panicking.rs:196 [INFO] [stderr] 9: 0x55fabb280f36 - std::panicking::default_hook::hd8ec13ee1bc2a65a [INFO] [stderr] at src/libstd/panicking.rs:210 [INFO] [stderr] 10: 0x55fabb281945 - std::panicking::rust_panic_with_hook::hf3b27166e5f403e7 [INFO] [stderr] at src/libstd/panicking.rs:473 [INFO] [stderr] 11: 0x55fabb2814e2 - std::panicking::continue_panic_fmt::hd961751be84a6f83 [INFO] [stderr] at src/libstd/panicking.rs:380 [INFO] [stderr] 12: 0x55fabb28143c - std::panicking::begin_panic_fmt::h23ef54e17e5a13fa [INFO] [stderr] at src/libstd/panicking.rs:335 [INFO] [stderr] 13: 0x55fabb1f7e77 - grabbag::iter::skip_exactly::SkipExactlyIterator::skip_exactly::h528c0bf6321c2e7d [INFO] [stderr] at src/iter/skip_exactly.rs:38 [INFO] [stderr] 14: 0x55fabb21d3b1 - grabbag::iter::skip_exactly::test_skip_exactly::{{closure}}::h566d811863fd7995 [INFO] [stderr] at src/iter/skip_exactly.rs:57 [INFO] [stderr] 15: 0x55fabb22b3b8 - std::sys_common::backtrace::__rust_begin_short_backtrace::h64d1671168288594 [INFO] [stderr] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/sys_common/backtrace.rs:126 [INFO] [stderr] 16: 0x55fabb20d2f5 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h2c200c9f93ee8090 [INFO] [stderr] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/thread/mod.rs:470 [INFO] [stderr] 17: 0x55fabb205ca8 - as core::ops::function::FnOnce<()>>::call_once::heb4b1c1088e1cc7f [INFO] [stderr] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panic.rs:315 [INFO] [stderr] 18: 0x55fabb218b97 - std::panicking::try::do_call::h3e16350cfdeeabd4 [INFO] [stderr] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panicking.rs:292 [INFO] [stderr] 19: 0x55fabb2840da - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:80 [INFO] [stderr] 20: 0x55fabb218800 - std::panicking::try::h92f0303b593170ab [INFO] [stderr] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panicking.rs:271 [INFO] [stderr] 21: 0x55fabb205d88 - std::panic::catch_unwind::hb804fdd870239577 [INFO] [stderr] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panic.rs:394 [INFO] [stderr] 22: 0x55fabb20ce02 - std::thread::Builder::spawn_unchecked::{{closure}}::h5d01283dad67b5d0 [INFO] [stderr] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/thread/mod.rs:469 [INFO] [stderr] 23: 0x55fabb22cac3 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h5381f0f81ae1a3a4 [INFO] [stderr] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libcore/ops/function.rs:227 [INFO] [stderr] 24: 0x55fabb2773ef - as core::ops::function::FnOnce>::call_once::h3cdef3b7ea22cd61 [INFO] [stderr] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/liballoc/boxed.rs:922 [INFO] [stderr] 25: 0x55fabb2837a0 - as core::ops::function::FnOnce>::call_once::hc8f25720bf0d5424 [INFO] [stderr] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/liballoc/boxed.rs:922 [INFO] [stderr] 26: 0x55fabb2837a0 - std::sys_common::thread::start_thread::h7e8885ccfd5d1932 [INFO] [stderr] at src/libstd/sys_common/thread.rs:13 [INFO] [stderr] 27: 0x55fabb2837a0 - std::sys::unix::thread::Thread::new::thread_start::h5d24df932d688baf [INFO] [stderr] at src/libstd/sys/unix/thread.rs:79 [INFO] [stderr] 28: 0x7f36d991c6db - start_thread [INFO] [stderr] 29: 0x7f36d942d88f - __clone [INFO] [stderr] 30: 0x0 - [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 `"docker" "inspect" "5d57703c657dcf072a8becbba07a3c10f3d03e4aad191487d276b4af3734324d"` [INFO] running `"docker" "rm" "-f" "5d57703c657dcf072a8becbba07a3c10f3d03e4aad191487d276b4af3734324d"` [INFO] [stdout] 5d57703c657dcf072a8becbba07a3c10f3d03e4aad191487d276b4af3734324d