$ RUST_BACKTRACE=full cross -v +beta test --target armv7-unknown-linux-musleabihf + "rustc" "--print" "sysroot" + "rustup" "toolchain" "list" + "rustup" "target" "list" "--toolchain" "beta-x86_64-unknown-linux-gnu" + "rustup" "component" "list" "--toolchain" "beta-x86_64-unknown-linux-gnu" + "/usr/bin/docker" "run" "--userns" "host" "-e" "RUST_BACKTRACE" "-e" "PKG_CONFIG_ALLOW_CROSS=1" "--rm" "--user" "1000:1000" "-e" "XARGO_HOME=/xargo" "-e" "CARGO_HOME=/cargo" "-e" "CARGO_TARGET_DIR=/target" "-e" "USER=ross" "-e" "CROSS_RUNNER=" "-v" "/home/ross/.xargo:/xargo:Z" "-v" "/home/ross/.cargo:/cargo:Z" "-v" "/cargo/bin" "-v" "/home/ross/arm-test:/project:Z" "-v" "/home/ross/.rustup/toolchains/beta-x86_64-unknown-linux-gnu:/rust:Z,ro" "-v" "/home/ross/arm-test/target:/target:Z" "-w" "/project" "-i" "-t" "rustembedded/cross:armv7-unknown-linux-musleabihf-0.2.1" "sh" "-c" "PATH=$PATH:/rust/bin cargo -v test --target armv7-unknown-linux-musleabihf" Fresh arm-test v0.1.0 (/project) Finished test [unoptimized + debuginfo] target(s) in 0.01s Running `qemu-arm /target/armv7-unknown-linux-musleabihf/debug/deps/arm_test-6cdb46f45d2b6f28` running 1 test test tests::it_works ... thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: "PoisonError { inner: .. }"', src/libtest/lib.rs:556:30 stack backtrace: 0: 0x580b4 - backtrace::backtrace::libunwind::trace::hd40b4f69fe271ed9 at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86 1: 0x580b4 - backtrace::backtrace::trace_unsynchronized::h3ca9a364f54e964e at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66 2: 0x580b4 - std::sys_common::backtrace::_print_fmt::h982a8ae6b5f29f65 at src/libstd/sys_common/backtrace.rs:78 3: 0x580b4 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::he8ccdc84a58ecc98 at src/libstd/sys_common/backtrace.rs:59 4: 0x83040 - core::fmt::write::h23f93faacadec7cc at src/libcore/fmt/mod.rs:1076 5: 0x54940 - std::io::Write::write_fmt::haf0f338c5ed7de5f at src/libstd/io/mod.rs:1537 6: 0x5a88c - std::sys_common::backtrace::_print::h5683bffede5f926f at src/libstd/sys_common/backtrace.rs:62 7: 0x5a88c - std::sys_common::backtrace::print::h208a071bf789b7b7 at src/libstd/sys_common/backtrace.rs:49 8: 0x5a88c - std::panicking::default_hook::{{closure}}::had93821ac17882da at src/libstd/panicking.rs:198 9: 0x5a558 - std::panicking::default_hook::ha27fdf8351cfa2f3 at src/libstd/panicking.rs:217 10: 0x5af6c - std::panicking::rust_panic_with_hook::h5e82ec4b73107927 at src/libstd/panicking.rs:526 11: 0x5ab6c - rust_begin_unwind at src/libstd/panicking.rs:437 12: 0x8170c - core::panicking::panic_fmt::h47be891d82598e44 at src/libcore/panicking.rs:85 13: 0x81564 - core::option::expect_none_failed::h565bc8e7856c8fe7 at src/libcore/option.rs:1269 14: 0x36e2c - core::result::Result<T,E>::unwrap::h916cdda944865138 at /rustc/6f959902b3103c49ca981fbc01871589c3498489/src/libcore/result.rs:1005 15: 0x36e2c - test::run_test_in_process::h3c269a8ac50a2dd7 at src/libtest/lib.rs:556 16: 0x36e2c - test::run_test::run_test_inner::{{closure}}::h15296ff2652b597f at src/libtest/lib.rs:450 17: 0x36424 - test::run_test::run_test_inner::hc9172a5fcccfeb6e at src/libtest/lib.rs:475 18: 0x34dd0 - test::run_test::h12bd73b7e259bc25 at src/libtest/lib.rs:505 19: 0x264b4 - test::run_tests::ha1fdb36c7355f908 at src/libtest/lib.rs:284 20: 0x264b4 - test::console::run_tests_console::he1caf03003813d3d at src/libtest/console.rs:280 21: 0x31b74 - test::test_main::hb716c54c676c2e08 at src/libtest/lib.rs:120 22: 0x32c3c - test::test_main_static::hb9dfb706262f665b at src/libtest/lib.rs:139 23: 0x11970 - arm_test::main::he46c7a1e35416fc1 24: 0x10f1c - std::rt::lang_start::{{closure}}::h250b51295a1aa3ab at /rustc/6f959902b3103c49ca981fbc01871589c3498489/src/libstd/rt.rs:67 25: 0x5b260 - std::rt::lang_start_internal::{{closure}}::h81f1dae74b28fcfc at src/libstd/rt.rs:52 26: 0x5b260 - std::panicking::try::do_call::ha6d54a9d8c9a8b73 at src/libstd/panicking.rs:348 27: 0x5b260 - std::panicking::try::h018fe3feda747ef2 at src/libstd/panicking.rs:325 28: 0x5b260 - std::panic::catch_unwind::hbcb5f8582e976c82 at src/libstd/panic.rs:394 29: 0x5b260 - std::rt::lang_start_internal::h504aede73e26a7ed at src/libstd/rt.rs:51 30: 0x10ef0 - std::rt::lang_start::h5abd88271e1cf6f0 at /rustc/6f959902b3103c49ca981fbc01871589c3498489/src/libstd/rt.rs:67 31: 0x119b8 - main error: test failed, to rerun pass '--lib'