[INFO] updating cached repository https://github.com/iafisher/popquiz [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] [stderr] From https://github.com/iafisher/popquiz [INFO] [stderr] 320f8e7..6cff667 master -> master [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 6cff667151c78166e250fd4380971d2fd34fface [INFO] testing iafisher/popquiz against beta-2019-09-28 for beta-1.39-1 [INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fiafisher%2Fpopquiz" "work/builds/worker-7/source"` [INFO] [stderr] Cloning into 'work/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/iafisher/popquiz 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 git repo https://github.com/iafisher/popquiz [INFO] finished tweaking git repo https://github.com/iafisher/popquiz [INFO] tweaked toml for git repo https://github.com/iafisher/popquiz written to work/builds/worker-7/source/Cargo.toml [INFO] crate git repo https://github.com/iafisher/popquiz already has a lockfile, it will not be regenerated [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] 3244c4e142826f95fd201f5a21462d28642debed5e06e1fd7d041cb324066a8d [INFO] running `"docker" "start" "-a" "3244c4e142826f95fd201f5a21462d28642debed5e06e1fd7d041cb324066a8d"` [INFO] [stderr] Compiling winapi v0.3.7 [INFO] [stderr] Compiling term_size v0.3.1 [INFO] [stderr] Compiling nix v0.13.1 [INFO] [stderr] Compiling structopt-derive v0.2.16 [INFO] [stderr] Compiling serde v1.0.101 [INFO] [stderr] Compiling textwrap v0.11.0 [INFO] [stderr] Compiling clap v2.33.0 [INFO] [stderr] Compiling winconsole v0.10.0 [INFO] [stderr] Compiling colored v1.8.0 [INFO] [stderr] Compiling rustyline v4.1.0 [INFO] [stderr] Compiling structopt v0.2.16 [INFO] [stderr] Compiling serde_json v1.0.39 [INFO] [stderr] Compiling chrono v0.4.6 [INFO] [stderr] Compiling popquiz v2.0.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/quiz.rs:1523:32 [INFO] [stderr] | [INFO] [stderr] 1523 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `name` [INFO] [stderr] --> src/quiz.rs:1230:5 [INFO] [stderr] | [INFO] [stderr] 1230 | name: &str, path: &PathBuf, results_path: &PathBuf [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_name` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: cannot borrow `tags` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/quiz.rs:1164:17 [INFO] [stderr] | [INFO] [stderr] 1163 | if let Some(n) = tags.get(tag.as_str()) { [INFO] [stderr] | ---- immutable borrow occurs here [INFO] [stderr] 1164 | tags.insert(tag.as_str(), n+1); [INFO] [stderr] | ^^^^ - immutable borrow later used here [INFO] [stderr] | | [INFO] [stderr] | mutable borrow occurs here [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stderr] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stderr] = note: for more information, see issue #59159 [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 31.20s [INFO] running `"docker" "inspect" "3244c4e142826f95fd201f5a21462d28642debed5e06e1fd7d041cb324066a8d"` [INFO] running `"docker" "rm" "-f" "3244c4e142826f95fd201f5a21462d28642debed5e06e1fd7d041cb324066a8d"` [INFO] [stdout] 3244c4e142826f95fd201f5a21462d28642debed5e06e1fd7d041cb324066a8d [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] 39d2146270673f65b8f90dcdd3ed036c4ebb08b7f34f2b8ec00902fbc3f28f91 [INFO] running `"docker" "start" "-a" "39d2146270673f65b8f90dcdd3ed036c4ebb08b7f34f2b8ec00902fbc3f28f91"` [INFO] [stderr] Compiling popquiz v2.0.0 (/opt/rustwide/workdir) [INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated [INFO] [stderr] --> src/quiz.rs:1523:32 [INFO] [stderr] | [INFO] [stderr] 1523 | fn cause(&self) -> Option<&error::Error> { [INFO] [stderr] | ^^^^^^^^^^^^ help: use `dyn`: `dyn error::Error` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(bare_trait_objects)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused variable: `name` [INFO] [stderr] --> src/quiz.rs:1230:5 [INFO] [stderr] | [INFO] [stderr] 1230 | name: &str, path: &PathBuf, results_path: &PathBuf [INFO] [stderr] | ^^^^ help: consider prefixing with an underscore: `_name` [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_variables)]` on by default [INFO] [stderr] [INFO] [stderr] warning: cannot borrow `tags` as mutable because it is also borrowed as immutable [INFO] [stderr] --> src/quiz.rs:1164:17 [INFO] [stderr] | [INFO] [stderr] 1163 | if let Some(n) = tags.get(tag.as_str()) { [INFO] [stderr] | ---- immutable borrow occurs here [INFO] [stderr] 1164 | tags.insert(tag.as_str(), n+1); [INFO] [stderr] | ^^^^ - immutable borrow later used here [INFO] [stderr] | | [INFO] [stderr] | mutable borrow occurs here [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(mutable_borrow_reservation_conflict)]` on by default [INFO] [stderr] = warning: this borrowing pattern was not meant to be accepted, and may become a hard error in the future [INFO] [stderr] = note: for more information, see issue #59159 [INFO] [stderr] [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 2.93s [INFO] running `"docker" "inspect" "39d2146270673f65b8f90dcdd3ed036c4ebb08b7f34f2b8ec00902fbc3f28f91"` [INFO] running `"docker" "rm" "-f" "39d2146270673f65b8f90dcdd3ed036c4ebb08b7f34f2b8ec00902fbc3f28f91"` [INFO] [stdout] 39d2146270673f65b8f90dcdd3ed036c4ebb08b7f34f2b8ec00902fbc3f28f91 [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] d950f9100815784d9f9f174f4e956be6b627e2c3d776bbc2f48919c08fce5495 [INFO] running `"docker" "start" "-a" "d950f9100815784d9f9f174f4e956be6b627e2c3d776bbc2f48919c08fce5495"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.39s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/popquiz-4589063ac5e1aa8b [INFO] [stdout] [INFO] [stdout] running 4 tests [INFO] [stdout] test quiz::tests::can_filter_by_excluding_tag ... ok [INFO] [stdout] test quiz::tests::can_filter_by_keyword ... ok [INFO] [stdout] test quiz::tests::can_filter_by_tag ... ok [INFO] [stdout] test quiz::tests::checking_answers_works ... ok [INFO] [stdout] [INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/functional_tests-ab5ebd963ff7f8d6 [INFO] [stdout] [INFO] [stdout] running 4 tests [INFO] [stdout] test can_take_test2_quiz ... FAILED [INFO] [stdout] test can_take_flipped_flashcard_quiz ... FAILED [INFO] [stdout] test can_take_test1_quiz ... FAILED [INFO] [stdout] test can_take_flashcard_quiz ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- can_take_test2_quiz stdout ---- [INFO] [stdout] thread 'can_take_test2_quiz' panicked at 'Failed to spawn child process: Os { code: 2, kind: NotFound, message: "No such file or directory" }', src/libcore/result.rs:1165:5 [INFO] [stdout] note: run with `RUST_BACKTRACE=1` environment variable to display a backtrace. [INFO] [stdout] [INFO] [stdout] ---- can_take_flipped_flashcard_quiz stdout ---- [INFO] [stdout] thread 'can_take_flipped_flashcard_quiz' panicked at 'Failed to spawn child process: Os { code: 2, kind: NotFound, message: "No such file or directory" }', src/libcore/result.rs:1165:5 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x562f3b8bf564 - backtrace::backtrace::libunwind::trace::hf625d18232cbbbd4 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/libunwind.rs:88 [INFO] [stdout] 1: 0x562f3b8bf564 - backtrace::backtrace::trace_unsynchronized::h41d74150fc6ff542 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/mod.rs:66 [INFO] [stdout] 2: 0x562f3b8bf564 - std::sys_common::backtrace::_print_fmt::h85d37830c667a1f9 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:76 [INFO] [stdout] 3: 0x562f3b8bf564 - ::fmt::h2b7ac01d5feaf9b2 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:60 [INFO] [stdout] 4: 0x562f3b8de9cc - core::fmt::write::h7fd0d904495c035f [INFO] [stdout] at src/libcore/fmt/mod.rs:1030 [INFO] [stdout] 5: 0x562f3b877df5 - std::io::Write::write_fmt::h424452e6ba861394 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/io/mod.rs:1412 [INFO] [stdout] 6: 0x562f3b8ba4c1 - std::io::impls::>::write_fmt::h814a51d8ae1dee4a [INFO] [stdout] at src/libstd/io/impls.rs:141 [INFO] [stdout] 7: 0x562f3b8c1a75 - std::sys_common::backtrace::_print::h4c743f7c274a5a74 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:64 [INFO] [stdout] 8: 0x562f3b8c1a75 - std::sys_common::backtrace::print::ha5c4f4bf03800d4d [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stdout] 9: 0x562f3b8c1a75 - std::panicking::default_hook::{{closure}}::h8b842185774c09e6 [INFO] [stdout] at src/libstd/panicking.rs:196 [INFO] [stdout] 10: 0x562f3b8c16fc - std::panicking::default_hook::hd8ec13ee1bc2a65a [INFO] [stdout] at src/libstd/panicking.rs:207 [INFO] [stdout] 11: 0x562f3b8c2175 - std::panicking::rust_panic_with_hook::hf3b27166e5f403e7 [INFO] [stdout] at src/libstd/panicking.rs:473 [INFO] [stdout] 12: 0x562f3b8c1d12 - std::panicking::continue_panic_fmt::hd961751be84a6f83 [INFO] [stdout] at src/libstd/panicking.rs:380 [INFO] [stdout] 13: 0x562f3b8c1c06 - rust_begin_unwind [INFO] [stdout] at src/libstd/panicking.rs:307 [INFO] [stdout] 14: 0x562f3b8dc0ba - core::panicking::panic_fmt::h467e0364f9237670 [INFO] [stdout] at src/libcore/panicking.rs:85 [INFO] [stdout] 15: 0x562f3b8dc1b7 - core::result::unwrap_failed::h38f3a56f1dadf080 [INFO] [stdout] at src/libcore/result.rs:1165 [INFO] [stdout] 16: 0x562f3b87678c - core::result::Result::expect::h7920e9d5438caf44 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libcore/result.rs:960 [INFO] [stdout] 17: 0x562f3b8746a5 - functional_tests::spawn_and_mock::h73ecd5e858a56eb3 [INFO] [stdout] at tests/functional_tests.rs:99 [INFO] [stdout] 18: 0x562f3b874e46 - functional_tests::can_take_flipped_flashcard_quiz::hde62ad74a3cfea95 [INFO] [stdout] at tests/functional_tests.rs:62 [INFO] [stdout] 19: 0x562f3b874dea - functional_tests::can_take_flipped_flashcard_quiz::{{closure}}::ha80cf9a362eaa55d [INFO] [stdout] at tests/functional_tests.rs:61 [INFO] [stdout] 20: 0x562f3b87506e - core::ops::function::FnOnce::call_once::ha096b48775bbf2d5 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libcore/ops/function.rs:227 [INFO] [stdout] 21: 0x562f3b881cef - as core::ops::function::FnOnce>::call_once::h8b428e8a43aaf8e9 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/liballoc/boxed.rs:922 [INFO] [stdout] 22: 0x562f3b8c8dca - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:80 [INFO] [stdout] 23: 0x562f3b89c4fe - std::panicking::try::heccce20d527a3513 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panicking.rs:271 [INFO] [stdout] 24: 0x562f3b89c4fe - std::panic::catch_unwind::h7fd8f5d3271f1692 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panic.rs:394 [INFO] [stdout] 25: 0x562f3b89c4fe - test::run_test::run_test_inner::{{closure}}::h88b46e5c359957e5 [INFO] [stdout] at src/libtest/lib.rs:1413 [INFO] [stdout] 26: 0x562f3b877565 - std::sys_common::backtrace::__rust_begin_short_backtrace::h00847676c8212941 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/sys_common/backtrace.rs:126 [INFO] [stdout] 27: 0x562f3b87b6f5 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h5dd37acd2295488e [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/thread/mod.rs:470 [INFO] [stdout] 28: 0x562f3b87b6f5 - as core::ops::function::FnOnce<()>>::call_once::h9d32b103da0b97c6 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panic.rs:315 [INFO] [stdout] 29: 0x562f3b87b6f5 - std::panicking::try::do_call::h2bd819a3056c57cd [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panicking.rs:292 [INFO] [stdout] 30: 0x562f3b8c8dca - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:80 [INFO] [stdout] 31: 0x562f3b87bca2 - std::panicking::try::h243a25457a848a1a [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panicking.rs:271 [INFO] [stdout] 32: 0x562f3b87bca2 - std::panic::catch_unwind::h74b81f55e55e757c [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panic.rs:394 [INFO] [stdout] 33: 0x562f3b87bca2 - std::thread::Builder::spawn_unchecked::{{closure}}::h4c2d214a2cffa6cf [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/thread/mod.rs:469 [INFO] [stdout] 34: 0x562f3b87bca2 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h8a8a187b3fb58e53 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libcore/ops/function.rs:227 [INFO] [stdout] 35: 0x562f3b8b699f - as core::ops::function::FnOnce>::call_once::h3cdef3b7ea22cd61 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/liballoc/boxed.rs:922 [INFO] [stdout] 36: 0x562f3b8c8520 - as core::ops::function::FnOnce>::call_once::hc8f25720bf0d5424 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/liballoc/boxed.rs:922 [INFO] [stdout] 37: 0x562f3b8c8520 - std::sys_common::thread::start_thread::h7e8885ccfd5d1932 [INFO] [stdout] at src/libstd/sys_common/thread.rs:13 [INFO] [stdout] 38: 0x562f3b8c8520 - std::sys::unix::thread::Thread::new::thread_start::h5d24df932d688baf [INFO] [stdout] at src/libstd/sys/unix/thread.rs:79 [INFO] [stdout] 39: 0x7fce7bc5b6db - start_thread [INFO] [stdout] 40: 0x7fce7b76c88f - __clone [INFO] [stdout] 41: 0x0 - [INFO] [stdout] [INFO] [stdout] ---- can_take_test1_quiz stdout ---- [INFO] [stdout] thread 'can_take_test1_quiz' panicked at 'Failed to spawn child process: Os { code: 2, kind: NotFound, message: "No such file or directory" }', src/libcore/result.rs:1165:5 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x562f3b8bf564 - backtrace::backtrace::libunwind::trace::hf625d18232cbbbd4 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/libunwind.rs:88 [INFO] [stdout] 1: 0x562f3b8bf564 - backtrace::backtrace::trace_unsynchronized::h41d74150fc6ff542 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/mod.rs:66 [INFO] [stdout] 2: 0x562f3b8bf564 - std::sys_common::backtrace::_print_fmt::h85d37830c667a1f9 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:76 [INFO] [stdout] 3: 0x562f3b8bf564 - ::fmt::h2b7ac01d5feaf9b2 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:60 [INFO] [stdout] 4: 0x562f3b8de9cc - core::fmt::write::h7fd0d904495c035f [INFO] [stdout] at src/libcore/fmt/mod.rs:1030 [INFO] [stdout] 5: 0x562f3b877df5 - std::io::Write::write_fmt::h424452e6ba861394 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/io/mod.rs:1412 [INFO] [stdout] 6: 0x562f3b8ba4c1 - std::io::impls::>::write_fmt::h814a51d8ae1dee4a [INFO] [stdout] at src/libstd/io/impls.rs:141 [INFO] [stdout] 7: 0x562f3b8c1a75 - std::sys_common::backtrace::_print::h4c743f7c274a5a74 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:64 [INFO] [stdout] 8: 0x562f3b8c1a75 - std::sys_common::backtrace::print::ha5c4f4bf03800d4d [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stdout] 9: 0x562f3b8c1a75 - std::panicking::default_hook::{{closure}}::h8b842185774c09e6 [INFO] [stdout] at src/libstd/panicking.rs:196 [INFO] [stdout] 10: 0x562f3b8c16fc - std::panicking::default_hook::hd8ec13ee1bc2a65a [INFO] [stdout] at src/libstd/panicking.rs:207 [INFO] [stdout] 11: 0x562f3b8c2175 - std::panicking::rust_panic_with_hook::hf3b27166e5f403e7 [INFO] [stdout] at src/libstd/panicking.rs:473 [INFO] [stdout] 12: 0x562f3b8c1d12 - std::panicking::continue_panic_fmt::hd961751be84a6f83 [INFO] [stdout] at src/libstd/panicking.rs:380 [INFO] [stdout] 13: 0x562f3b8c1c06 - rust_begin_unwind [INFO] [stdout] at src/libstd/panicking.rs:307 [INFO] [stdout] 14: 0x562f3b8dc0ba - core::panicking::panic_fmt::h467e0364f9237670 [INFO] [stdout] at src/libcore/panicking.rs:85 [INFO] [stdout] 15: 0x562f3b8dc1b7 - core::result::unwrap_failed::h38f3a56f1dadf080 [INFO] [stdout] at src/libcore/result.rs:1165 [INFO] [stdout] 16: 0x562f3b87678c - core::result::Result::expect::h7920e9d5438caf44 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libcore/result.rs:960 [INFO] [stdout] 17: 0x562f3b8746a5 - functional_tests::spawn_and_mock::h73ecd5e858a56eb3 [INFO] [stdout] at tests/functional_tests.rs:99 [INFO] [stdout] 18: 0x562f3b874b01 - functional_tests::can_take_test1_quiz::h08c9ecdbfe00bdec [INFO] [stdout] at tests/functional_tests.rs:7 [INFO] [stdout] 19: 0x562f3b874aaa - functional_tests::can_take_test1_quiz::{{closure}}::h59529c31c25ba9c6 [INFO] [stdout] at tests/functional_tests.rs:6 [INFO] [stdout] 20: 0x562f3b87509e - core::ops::function::FnOnce::call_once::ha2982e02f69782f0 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libcore/ops/function.rs:227 [INFO] [stdout] 21: 0x562f3b881cef - as core::ops::function::FnOnce>::call_once::h8b428e8a43aaf8e9 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/liballoc/boxed.rs:922 [INFO] [stdout] 22: 0x562f3b8c8dca - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:80 [INFO] [stdout] 23: 0x562f3b89c4fe - std::panicking::try::heccce20d527a3513 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panicking.rs:271 [INFO] [stdout] 24: 0x562f3b89c4fe - std::panic::catch_unwind::h7fd8f5d3271f1692 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panic.rs:394 [INFO] [stdout] 25: 0x562f3b89c4fe - test::run_test::run_test_inner::{{closure}}::h88b46e5c359957e5 [INFO] [stdout] at src/libtest/lib.rs:1413 [INFO] [stdout] 26: 0x562f3b877565 - std::sys_common::backtrace::__rust_begin_short_backtrace::h00847676c8212941 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/sys_common/backtrace.rs:126 [INFO] [stdout] 27: 0x562f3b87b6f5 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h5dd37acd2295488e [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/thread/mod.rs:470 [INFO] [stdout] 28: 0x562f3b87b6f5 - as core::ops::function::FnOnce<()>>::call_once::h9d32b103da0b97c6 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panic.rs:315 [INFO] [stdout] 29: 0x562f3b87b6f5 - std::panicking::try::do_call::h2bd819a3056c57cd [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panicking.rs:292 [INFO] [stdout] 30: 0x562f3b8c8dca - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:80 [INFO] [stdout] 31: 0x562f3b87bca2 - std::panicking::try::h243a25457a848a1a [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panicking.rs:271 [INFO] [stdout] 32: 0x562f3b87bca2 - std::panic::catch_unwind::h74b81f55e55e757c [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panic.rs:394 [INFO] [stdout] 33: 0x562f3b87bca2 - std::thread::Builder::spawn_unchecked::{{closure}}::h4c2d214a2cffa6cf [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/thread/mod.rs:469 [INFO] [stdout] 34: 0x562f3b87bca2 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h8a8a187b3fb58e53 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libcore/ops/function.rs:227 [INFO] [stdout] 35: 0x562f3b8b699f - as core::ops::function::FnOnce>::call_once::h3cdef3b7ea22cd61 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/liballoc/boxed.rs:922 [INFO] [stdout] 36: 0x562f3b8c8520 - as core::ops::function::FnOnce>::call_once::hc8f25720bf0d5424 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/liballoc/boxed.rs:922 [INFO] [stdout] 37: 0x562f3b8c8520 - std::sys_common::thread::start_thread::h7e8885ccfd5d1932 [INFO] [stdout] at src/libstd/sys_common/thread.rs:13 [INFO] [stdout] 38: 0x562f3b8c8520 - std::sys::unix::thread::Thread::new::thread_start::h5d24df932d688baf [INFO] [stdout] at src/libstd/sys/unix/thread.rs:79 [INFO] [stdout] 39: 0x7fce7bc5b6db - start_thread [INFO] [stdout] 40: 0x7fce7b76c88f - __clone [INFO] [stdout] 41: 0x0 - [INFO] [stdout] [INFO] [stdout] ---- can_take_flashcard_quiz stdout ---- [INFO] [stdout] thread 'can_take_flashcard_quiz' panicked at 'Failed to spawn child process: Os { code: 2, kind: NotFound, message: "No such file or directory" }', src/libcore/result.rs:1165:5 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x562f3b8bf564 - backtrace::backtrace::libunwind::trace::hf625d18232cbbbd4 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/libunwind.rs:88 [INFO] [stdout] 1: 0x562f3b8bf564 - backtrace::backtrace::trace_unsynchronized::h41d74150fc6ff542 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/mod.rs:66 [INFO] [stdout] 2: 0x562f3b8bf564 - std::sys_common::backtrace::_print_fmt::h85d37830c667a1f9 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:76 [INFO] [stdout] 3: 0x562f3b8bf564 - ::fmt::h2b7ac01d5feaf9b2 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:60 [INFO] [stdout] 4: 0x562f3b8de9cc - core::fmt::write::h7fd0d904495c035f [INFO] [stdout] at src/libcore/fmt/mod.rs:1030 [INFO] [stdout] 5: 0x562f3b877df5 - std::io::Write::write_fmt::h424452e6ba861394 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/io/mod.rs:1412 [INFO] [stdout] 6: 0x562f3b8ba4c1 - std::io::impls::>::write_fmt::h814a51d8ae1dee4a [INFO] [stdout] at src/libstd/io/impls.rs:141 [INFO] [stdout] 7: 0x562f3b8c1a75 - std::sys_common::backtrace::_print::h4c743f7c274a5a74 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:64 [INFO] [stdout] 8: 0x562f3b8c1a75 - std::sys_common::backtrace::print::ha5c4f4bf03800d4d [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stdout] 9: 0x562f3b8c1a75 - std::panicking::default_hook::{{closure}}::h8b842185774c09e6 [INFO] [stdout] at src/libstd/panicking.rs:196 [INFO] [stdout] 10: 0x562f3b8c16fc - std::panicking::default_hook::hd8ec13ee1bc2a65a [INFO] [stdout] at src/libstd/panicking.rs:207 [INFO] [stdout] 11: 0x562f3b8c2175 - std::panicking::rust_panic_with_hook::hf3b27166e5f403e7 [INFO] [stdout] at src/libstd/panicking.rs:473 [INFO] [stdout] 12: 0x562f3b8c1d12 - std::panicking::continue_panic_fmt::hd961751be84a6f83 [INFO] [stdout] at src/libstd/panicking.rs:380 [INFO] [stdout] 13: 0x562f3b8c1c06 - rust_begin_unwind [INFO] [stdout] at src/libstd/panicking.rs:307 [INFO] [stdout] 14: 0x562f3b8dc0ba - core::panicking::panic_fmt::h467e0364f9237670 [INFO] [stdout] at src/libcore/panicking.rs:85 [INFO] [stdout] 15: 0x562f3b8dc1b7 - core::result::unwrap_failed::h38f3a56f1dadf080 [INFO] [stdout] at src/libcore/result.rs:1165 [INFO] [stdout] 16: 0x562f3b87678c - core::result::Result::expect::h7920e9d5438caf44 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libcore/result.rs:960 [INFO] [stdout] 17: 0x562f3b8746a5 - functional_tests::spawn_and_mock::h73ecd5e858a56eb3 [INFO] [stdout] at tests/functional_tests.rs:99 [INFO] [stdout] 18: 0x562f3b874d76 - functional_tests::can_take_flashcard_quiz::h9392e5dceb6c162a [INFO] [stdout] at tests/functional_tests.rs:45 [INFO] [stdout] 19: 0x562f3b874d1a - functional_tests::can_take_flashcard_quiz::{{closure}}::h8bf2031673ae5479 [INFO] [stdout] at tests/functional_tests.rs:44 [INFO] [stdout] 20: 0x562f3b87500e - core::ops::function::FnOnce::call_once::h40039c42d40d3e2b [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libcore/ops/function.rs:227 [INFO] [stdout] 21: 0x562f3b881cef - as core::ops::function::FnOnce>::call_once::h8b428e8a43aaf8e9 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/liballoc/boxed.rs:922 [INFO] [stdout] 22: 0x562f3b8c8dca - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:80 [INFO] [stdout] 23: 0x562f3b89c4fe - std::panicking::try::heccce20d527a3513 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panicking.rs:271 [INFO] [stdout] 24: 0x562f3b89c4fe - std::panic::catch_unwind::h7fd8f5d3271f1692 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panic.rs:394 [INFO] [stdout] 25: 0x562f3b89c4fe - test::run_test::run_test_inner::{{closure}}::h88b46e5c359957e5 [INFO] [stdout] at src/libtest/lib.rs:1413 [INFO] [stdout] 26: 0x562f3b877565 - std::sys_common::backtrace::__rust_begin_short_backtrace::h00847676c8212941 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/sys_common/backtrace.rs:126 [INFO] [stdout] 27: 0x562f3b87b6f5 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h5dd37acd2295488e [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/thread/mod.rs:470 [INFO] [stdout] 28: 0x562f3b87b6f5 - as core::ops::function::FnOnce<()>>::call_once::h9d32b103da0b97c6 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panic.rs:315 [INFO] [stdout] 29: 0x562f3b87b6f5 - std::panicking::try::do_call::h2bd819a3056c57cd [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panicking.rs:292 [INFO] [stdout] 30: 0x562f3b8c8dca - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:80 [INFO] [stdout] 31: 0x562f3b87bca2 - std::panicking::try::h243a25457a848a1a [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panicking.rs:271 [INFO] [stdout] 32: 0x562f3b87bca2 - std::panic::catch_unwind::h74b81f55e55e757c [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panic.rs:394 [INFO] [stdout] 33: 0x562f3b87bca2 - std::thread::Builder::spawn_unchecked::{{closure}}::h4c2d214a2cffa6cf [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/thread/mod.rs:469 [INFO] [stdout] 34: 0x562f3b87bca2 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h8a8a187b3fb58e53 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libcore/ops/function.rs:227 [INFO] [stdout] 35: 0x562f3b8b699f - as core::ops::function::FnOnce>::call_once::h3cdef3b7ea22cd61 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/liballoc/boxed.rs:922 [INFO] [stdout] 36: 0x562f3b8c8520 - as core::ops::function::FnOnce>::call_once::hc8f25720bf0d5424 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/liballoc/boxed.rs:922 [INFO] [stdout] 37: 0x562f3b8c8520 - std::sys_common::thread::start_thread::h7e8885ccfd5d1932 [INFO] [stdout] at src/libstd/sys_common/thread.rs:13 [INFO] [stdout] 38: 0x562f3b8c8520 - std::sys::unix::thread::Thread::new::thread_start::h5d24df932d688baf [INFO] [stdout] at src/libstd/sys/unix/thread.rs:79 [INFO] [stdout] 39: 0x7fce7bc5b6db - start_thread [INFO] [stdout] 40: 0x7fce7b76c88f - __clone [INFO] [stdout] 41: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] can_take_flashcard_quiz [INFO] [stdout] can_take_flipped_flashcard_quiz [INFO] [stdout] can_take_test1_quiz [INFO] [stdout] can_take_test2_quiz [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 4 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--test functional_tests' [INFO] running `"docker" "inspect" "d950f9100815784d9f9f174f4e956be6b627e2c3d776bbc2f48919c08fce5495"` [INFO] running `"docker" "rm" "-f" "d950f9100815784d9f9f174f4e956be6b627e2c3d776bbc2f48919c08fce5495"` [INFO] [stdout] d950f9100815784d9f9f174f4e956be6b627e2c3d776bbc2f48919c08fce5495