[INFO] fetching crate tfrecord 0.1.2... [INFO] testing tfrecord-0.1.2 against 1.44.0 for beta-1.45-1 [INFO] extracting crate tfrecord 0.1.2 into /workspace/builds/worker-5/source [INFO] validating manifest of crates.io crate tfrecord 0.1.2 on toolchain 1.44.0 [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking crates.io crate tfrecord 0.1.2 [INFO] finished tweaking crates.io crate tfrecord 0.1.2 [INFO] tweaked toml for crates.io crate tfrecord 0.1.2 written to /workspace/builds/worker-5/source/Cargo.toml [INFO] crate crates.io crate tfrecord 0.1.2 already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+1.44.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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" "+1.44.0" "build" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] 1b22c740f51c222deba23150fdee8bf3ec497a797b0ab7d84cdc29afea874dee [INFO] running `"docker" "start" "-a" "1b22c740f51c222deba23150fdee8bf3ec497a797b0ab7d84cdc29afea874dee"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling proc-macro2 v1.0.17 [INFO] [stderr] Compiling syn v1.0.27 [INFO] [stderr] Compiling serde v1.0.110 [INFO] [stderr] Compiling arrayvec v0.5.1 [INFO] [stderr] Compiling multimap v0.8.1 [INFO] [stderr] Compiling build_const v0.2.1 [INFO] [stderr] Compiling hex v0.4.2 [INFO] [stderr] Compiling blake3 v0.3.4 [INFO] [stderr] Compiling openssl-sys v0.9.57 [INFO] [stderr] Compiling futures-channel v0.3.5 [INFO] [stderr] Compiling itertools v0.8.1 [INFO] [stderr] Compiling http-body v0.3.1 [INFO] [stderr] Compiling getrandom v0.1.13 [INFO] [stderr] Compiling backtrace-sys v0.1.32 [INFO] [stderr] Compiling filetime v0.2.10 [INFO] [stderr] Compiling xattr v0.2.2 [INFO] [stderr] Compiling petgraph v0.5.1 [INFO] [stderr] Compiling prost-build v0.6.1 [INFO] [stderr] Compiling backtrace v0.3.40 [INFO] [stderr] Compiling mime_guess v2.0.3 [INFO] [stderr] Compiling tokio v0.2.21 [INFO] [stderr] Compiling rand_core v0.5.1 [INFO] [stderr] Compiling tar v0.4.28 [INFO] [stderr] Compiling crc v1.8.1 [INFO] [stderr] Compiling rand_chacha v0.2.1 [INFO] [stderr] Compiling rand v0.7.3 [INFO] [stderr] Compiling openssl v0.10.29 [INFO] [stderr] Compiling native-tls v0.2.4 [INFO] [stderr] Compiling quote v1.0.2 [INFO] [stderr] Compiling tempfile v3.1.0 [INFO] [stderr] Compiling tokio-util v0.3.1 [INFO] [stderr] Compiling tokio-tls v0.3.1 [INFO] [stderr] Compiling serde_urlencoded v0.6.1 [INFO] [stderr] Compiling synstructure v0.12.2 [INFO] [stderr] Compiling pin-project-internal v0.4.17 [INFO] [stderr] Compiling prost-derive v0.6.1 [INFO] [stderr] Compiling failure_derive v0.1.8 [INFO] [stderr] Compiling failure v0.1.8 [INFO] [stderr] Compiling prost v0.6.1 [INFO] [stderr] Compiling pin-project v0.4.17 [INFO] [stderr] Compiling futures-util v0.3.5 [INFO] [stderr] Compiling prost-types v0.6.1 [INFO] [stderr] Compiling h2 v0.2.5 [INFO] [stderr] Compiling hyper v0.13.5 [INFO] [stderr] Compiling hyper-tls v0.4.1 [INFO] [stderr] Compiling reqwest v0.10.4 [INFO] [stderr] Compiling tfrecord v0.1.2 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1m 34s [INFO] running `"docker" "inspect" "1b22c740f51c222deba23150fdee8bf3ec497a797b0ab7d84cdc29afea874dee"` [INFO] running `"docker" "rm" "-f" "1b22c740f51c222deba23150fdee8bf3ec497a797b0ab7d84cdc29afea874dee"` [INFO] [stdout] 1b22c740f51c222deba23150fdee8bf3ec497a797b0ab7d84cdc29afea874dee [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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" "+1.44.0" "test" "--frozen" "--no-run"` [INFO] [stdout] 2cc646508c71e71d583a282f068b903a5b16e30a185bfd28113b8de25f9a98cb [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `"docker" "start" "-a" "2cc646508c71e71d583a282f068b903a5b16e30a185bfd28113b8de25f9a98cb"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] Compiling serde_json v1.0.53 [INFO] [stderr] Compiling tfrecord v0.1.2 (/opt/rustwide/workdir) [INFO] [stderr] warning: unused import: `common::*` [INFO] [stderr] --> tests/dataset.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use common::*; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `rand::Rng` [INFO] [stderr] --> tests/dataset.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use rand::Rng; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 7.53s [INFO] running `"docker" "inspect" "2cc646508c71e71d583a282f068b903a5b16e30a185bfd28113b8de25f9a98cb"` [INFO] running `"docker" "rm" "-f" "2cc646508c71e71d583a282f068b903a5b16e30a185bfd28113b8de25f9a98cb"` [INFO] [stdout] 2cc646508c71e71d583a282f068b903a5b16e30a185bfd28113b8de25f9a98cb [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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" "+1.44.0" "test" "--frozen"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] c482bd44da737fef432f1384e53e74f53b3b60e796f5ae156652b0df95d7e9b9 [INFO] running `"docker" "start" "-a" "c482bd44da737fef432f1384e53e74f53b3b60e796f5ae156652b0df95d7e9b9"` [INFO] [stderr] sudo: setrlimit(RLIMIT_CORE): Operation not permitted [INFO] [stderr] warning: unused import: `common::*` [INFO] [stderr] --> tests/dataset.rs:3:5 [INFO] [stderr] | [INFO] [stderr] 3 | use common::*; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] | [INFO] [stderr] = note: `#[warn(unused_imports)]` on by default [INFO] [stderr] [INFO] [stderr] warning: unused import: `rand::Rng` [INFO] [stderr] --> tests/dataset.rs:4:5 [INFO] [stderr] | [INFO] [stderr] 4 | use rand::Rng; [INFO] [stderr] | ^^^^^^^^^ [INFO] [stderr] [INFO] [stderr] warning: 2 warnings emitted [INFO] [stderr] [INFO] [stderr] Finished test [unoptimized + debuginfo] target(s) in 0.24s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/tfrecord-dd3f4505379985ae [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/common-575c17d485075e1e [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/dataset-ab8d2feb4695261a [INFO] [stdout] [INFO] [stdout] running 0 tests [INFO] [stdout] [INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] Running /opt/rustwide/target/debug/deps/example-06b76ea323d93eb5 [INFO] [stdout] [INFO] [stdout] running 2 tests [INFO] [stdout] test blocking_writer_test ... FAILED [INFO] [stdout] test blocking_reader_test ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- blocking_writer_test stdout ---- [INFO] [stdout] thread 'blocking_writer_test' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: Other, message: "Read-only file system" }', tests/common.rs:32:9 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x55c8167146e4 - backtrace::backtrace::libunwind::trace::hc1c4a1d8ad423b97 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86 [INFO] [stdout] 1: 0x55c8167146e4 - backtrace::backtrace::trace_unsynchronized::h82274781060cb056 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66 [INFO] [stdout] 2: 0x55c8167146e4 - std::sys_common::backtrace::_print_fmt::h2a45d89b653a4da8 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:78 [INFO] [stdout] 3: 0x55c8167146e4 - ::fmt::h41a0a93ab85e6aa1 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:59 [INFO] [stdout] 4: 0x55c81673ea2c - core::fmt::write::hdaea18585065a96d [INFO] [stdout] at src/libcore/fmt/mod.rs:1069 [INFO] [stdout] 5: 0x55c816648795 - std::io::Write::write_fmt::h42f0550b6bd39c6e [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/io/mod.rs:1504 [INFO] [stdout] 6: 0x55c81670ae11 - std::io::impls::>::write_fmt::h223d7b7033cad46d [INFO] [stdout] at src/libstd/io/impls.rs:156 [INFO] [stdout] 7: 0x55c816716fc5 - std::sys_common::backtrace::_print::hd95f9978cc145ca4 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:62 [INFO] [stdout] 8: 0x55c816716fc5 - std::sys_common::backtrace::print::hfb25ca2291be47d0 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stdout] 9: 0x55c816716fc5 - std::panicking::default_hook::{{closure}}::h44f76cee5dc8591c [INFO] [stdout] at src/libstd/panicking.rs:198 [INFO] [stdout] 10: 0x55c816716cab - std::panicking::default_hook::h198e1a712910f1e6 [INFO] [stdout] at src/libstd/panicking.rs:215 [INFO] [stdout] 11: 0x55c816717622 - std::panicking::rust_panic_with_hook::hc0b4730bb8013f9d [INFO] [stdout] at src/libstd/panicking.rs:511 [INFO] [stdout] 12: 0x55c81671720b - rust_begin_unwind [INFO] [stdout] at src/libstd/panicking.rs:419 [INFO] [stdout] 13: 0x55c81673d1a1 - core::panicking::panic_fmt::h1ac71ad045d55416 [INFO] [stdout] at src/libcore/panicking.rs:111 [INFO] [stdout] 14: 0x55c81673cfc3 - core::option::expect_none_failed::hb40004d71d61b685 [INFO] [stdout] at src/libcore/option.rs:1268 [INFO] [stdout] 15: 0x55c81655c520 - core::result::Result::unwrap::h3cccbb9dbaf99aa1 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libcore/result.rs:1005 [INFO] [stdout] 16: 0x55c81625b517 - ::deref::__static_ref_initialize::hdcbc3ab55d59da83 [INFO] [stdout] at tests/common.rs:32 [INFO] [stdout] 17: 0x55c81625b517 - core::ops::function::FnOnce::call_once::hd7d4794d73365ab4 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libcore/ops/function.rs:232 [INFO] [stdout] 18: 0x55c81625ae8b - lazy_static::lazy::Lazy::get::{{closure}}::h94a00a7dcae5c2a5 [INFO] [stdout] at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/inline_lazy.rs:31 [INFO] [stdout] 19: 0x55c81624d112 - std::sync::once::Once::call_once::{{closure}}::h72af3d3fc435e151 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/sync/once.rs:264 [INFO] [stdout] 20: 0x55c816713e78 - std::sync::once::Once::call_inner::ha1f24ba5265f953b [INFO] [stdout] at src/libstd/sync/once.rs:416 [INFO] [stdout] 21: 0x55c81624d041 - std::sync::once::Once::call_once::hb90dfa65bd8029a1 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/sync/once.rs:264 [INFO] [stdout] 22: 0x55c81624e4c5 - lazy_static::lazy::Lazy::get::ha84b64e0569cd486 [INFO] [stdout] at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/inline_lazy.rs:30 [INFO] [stdout] 23: 0x55c81624e4c5 - ::deref::__stability::h79424fb222d834e5 [INFO] [stdout] at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/lib.rs:142 [INFO] [stdout] 24: 0x55c81624e4c5 - ::deref::h09fa8c9199dbe6a5 [INFO] [stdout] at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/lib.rs:144 [INFO] [stdout] 25: 0x55c816251a41 - example::blocking_writer_test::h9cffe071c49a0c2a [INFO] [stdout] at tests/example.rs:61 [INFO] [stdout] 26: 0x55c8162519be - example::blocking_writer_test::{{closure}}::h283216c3074c1808 [INFO] [stdout] at tests/example.rs:60 [INFO] [stdout] 27: 0x55c81625b58e - core::ops::function::FnOnce::call_once::he8dfd6ffbebc90a3 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libcore/ops/function.rs:232 [INFO] [stdout] 28: 0x55c81666fc26 - as core::ops::function::FnOnce>::call_once::hc165f65f4331a55c [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/liballoc/boxed.rs:1008 [INFO] [stdout] 29: 0x55c81666fc26 - as core::ops::function::FnOnce<()>>::call_once::hb89f1f769cad07ce [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/panic.rs:318 [INFO] [stdout] 30: 0x55c81666fc26 - std::panicking::try::do_call::h104f7f3dae5a1b29 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/panicking.rs:331 [INFO] [stdout] 31: 0x55c81666fc26 - std::panicking::try::h0e20f01361cba753 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/panicking.rs:274 [INFO] [stdout] 32: 0x55c81666fc26 - std::panic::catch_unwind::h0bd0c84b5f4cd121 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/panic.rs:394 [INFO] [stdout] 33: 0x55c81666fc26 - test::run_test_in_process::hf34c22adfeb6853d [INFO] [stdout] at src/libtest/lib.rs:541 [INFO] [stdout] 34: 0x55c81666fc26 - test::run_test::run_test_inner::{{closure}}::h40d568b4c10a12f1 [INFO] [stdout] at src/libtest/lib.rs:450 [INFO] [stdout] 35: 0x55c816647c46 - std::sys_common::backtrace::__rust_begin_short_backtrace::hffd9774ad3f2d778 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/sys_common/backtrace.rs:130 [INFO] [stdout] 36: 0x55c81664cfd5 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h4594020476cf52d4 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/thread/mod.rs:475 [INFO] [stdout] 37: 0x55c81664cfd5 - as core::ops::function::FnOnce<()>>::call_once::h9d0a6d45b73e29e4 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/panic.rs:318 [INFO] [stdout] 38: 0x55c81664cfd5 - std::panicking::try::do_call::h902fd77b30bb3bb7 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/panicking.rs:331 [INFO] [stdout] 39: 0x55c81664cfd5 - std::panicking::try::hc17d3a628e65d49d [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/panicking.rs:274 [INFO] [stdout] 40: 0x55c81664cfd5 - std::panic::catch_unwind::h9c9d49cbb6b18017 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/panic.rs:394 [INFO] [stdout] 41: 0x55c81664cfd5 - std::thread::Builder::spawn_unchecked::{{closure}}::h6a6f5a333fd631a2 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/thread/mod.rs:474 [INFO] [stdout] 42: 0x55c81664cfd5 - core::ops::function::FnOnce::call_once{{vtable.shim}}::ha6fb197e0ce57f73 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libcore/ops/function.rs:232 [INFO] [stdout] 43: 0x55c81671e93a - as core::ops::function::FnOnce>::call_once::h1f1fac7de7dd9691 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/liballoc/boxed.rs:1008 [INFO] [stdout] 44: 0x55c81671e93a - as core::ops::function::FnOnce>::call_once::ha031f48633a6af54 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/liballoc/boxed.rs:1008 [INFO] [stdout] 45: 0x55c81671e93a - std::sys::unix::thread::Thread::new::thread_start::h241864caf436e182 [INFO] [stdout] at src/libstd/sys/unix/thread.rs:87 [INFO] [stdout] 46: 0x7f6c5481a609 - start_thread [INFO] [stdout] 47: 0x7f6c54724103 - __clone [INFO] [stdout] 48: 0x0 - [INFO] [stdout] [INFO] [stdout] ---- blocking_reader_test stdout ---- [INFO] [stdout] thread 'blocking_reader_test' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: Other, message: "Read-only file system" }', tests/common.rs:22:9 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x55c8167146e4 - backtrace::backtrace::libunwind::trace::hc1c4a1d8ad423b97 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/libunwind.rs:86 [INFO] [stdout] 1: 0x55c8167146e4 - backtrace::backtrace::trace_unsynchronized::h82274781060cb056 [INFO] [stdout] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.46/src/backtrace/mod.rs:66 [INFO] [stdout] 2: 0x55c8167146e4 - std::sys_common::backtrace::_print_fmt::h2a45d89b653a4da8 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:78 [INFO] [stdout] 3: 0x55c8167146e4 - ::fmt::h41a0a93ab85e6aa1 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:59 [INFO] [stdout] 4: 0x55c81673ea2c - core::fmt::write::hdaea18585065a96d [INFO] [stdout] at src/libcore/fmt/mod.rs:1069 [INFO] [stdout] 5: 0x55c816648795 - std::io::Write::write_fmt::h42f0550b6bd39c6e [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/io/mod.rs:1504 [INFO] [stdout] 6: 0x55c81670ae11 - std::io::impls::>::write_fmt::h223d7b7033cad46d [INFO] [stdout] at src/libstd/io/impls.rs:156 [INFO] [stdout] 7: 0x55c816716fc5 - std::sys_common::backtrace::_print::hd95f9978cc145ca4 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:62 [INFO] [stdout] 8: 0x55c816716fc5 - std::sys_common::backtrace::print::hfb25ca2291be47d0 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stdout] 9: 0x55c816716fc5 - std::panicking::default_hook::{{closure}}::h44f76cee5dc8591c [INFO] [stdout] at src/libstd/panicking.rs:198 [INFO] [stdout] 10: 0x55c816716cab - std::panicking::default_hook::h198e1a712910f1e6 [INFO] [stdout] at src/libstd/panicking.rs:215 [INFO] [stdout] 11: 0x55c816717622 - std::panicking::rust_panic_with_hook::hc0b4730bb8013f9d [INFO] [stdout] at src/libstd/panicking.rs:511 [INFO] [stdout] 12: 0x55c81671720b - rust_begin_unwind [INFO] [stdout] at src/libstd/panicking.rs:419 [INFO] [stdout] 13: 0x55c81673d1a1 - core::panicking::panic_fmt::h1ac71ad045d55416 [INFO] [stdout] at src/libcore/panicking.rs:111 [INFO] [stdout] 14: 0x55c81673cfc3 - core::option::expect_none_failed::hb40004d71d61b685 [INFO] [stdout] at src/libcore/option.rs:1268 [INFO] [stdout] 15: 0x55c81655c520 - core::result::Result::unwrap::h3cccbb9dbaf99aa1 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libcore/result.rs:1005 [INFO] [stdout] 16: 0x55c81625b23d - ::deref::__static_ref_initialize::he43855f6f31d9db7 [INFO] [stdout] at tests/common.rs:22 [INFO] [stdout] 17: 0x55c81625b23d - core::ops::function::FnOnce::call_once::hbc8eccfcbdff258e [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libcore/ops/function.rs:232 [INFO] [stdout] 18: 0x55c81625ae3b - lazy_static::lazy::Lazy::get::{{closure}}::h869a427b620e623a [INFO] [stdout] at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/inline_lazy.rs:31 [INFO] [stdout] 19: 0x55c81624d0c2 - std::sync::once::Once::call_once::{{closure}}::h09394c39309e4ccd [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/sync/once.rs:264 [INFO] [stdout] 20: 0x55c816713e78 - std::sync::once::Once::call_inner::ha1f24ba5265f953b [INFO] [stdout] at src/libstd/sync/once.rs:416 [INFO] [stdout] 21: 0x55c81624cf71 - std::sync::once::Once::call_once::h14c7d36882bce3f2 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/sync/once.rs:264 [INFO] [stdout] 22: 0x55c81624e425 - lazy_static::lazy::Lazy::get::ha9616ef7af608895 [INFO] [stdout] at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/inline_lazy.rs:30 [INFO] [stdout] 23: 0x55c81624e425 - ::deref::__stability::h9af060af728efda4 [INFO] [stdout] at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/lib.rs:142 [INFO] [stdout] 24: 0x55c81624e425 - ::deref::he5a7301187f78b36 [INFO] [stdout] at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/lazy_static-1.4.0/src/lib.rs:144 [INFO] [stdout] 25: 0x55c816250de9 - example::blocking_reader_test::h16c7205a93621900 [INFO] [stdout] at tests/example.rs:9 [INFO] [stdout] 26: 0x55c816250d7e - example::blocking_reader_test::{{closure}}::h341e5595aec3eb94 [INFO] [stdout] at tests/example.rs:6 [INFO] [stdout] 27: 0x55c81625b10e - core::ops::function::FnOnce::call_once::h7ad55cd16241195a [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libcore/ops/function.rs:232 [INFO] [stdout] 28: 0x55c81666fc26 - as core::ops::function::FnOnce>::call_once::hc165f65f4331a55c [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/liballoc/boxed.rs:1008 [INFO] [stdout] 29: 0x55c81666fc26 - as core::ops::function::FnOnce<()>>::call_once::hb89f1f769cad07ce [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/panic.rs:318 [INFO] [stdout] 30: 0x55c81666fc26 - std::panicking::try::do_call::h104f7f3dae5a1b29 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/panicking.rs:331 [INFO] [stdout] 31: 0x55c81666fc26 - std::panicking::try::h0e20f01361cba753 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/panicking.rs:274 [INFO] [stdout] 32: 0x55c81666fc26 - std::panic::catch_unwind::h0bd0c84b5f4cd121 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/panic.rs:394 [INFO] [stdout] 33: 0x55c81666fc26 - test::run_test_in_process::hf34c22adfeb6853d [INFO] [stdout] at src/libtest/lib.rs:541 [INFO] [stdout] 34: 0x55c81666fc26 - test::run_test::run_test_inner::{{closure}}::h40d568b4c10a12f1 [INFO] [stdout] at src/libtest/lib.rs:450 [INFO] [stdout] 35: 0x55c816647c46 - std::sys_common::backtrace::__rust_begin_short_backtrace::hffd9774ad3f2d778 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/sys_common/backtrace.rs:130 [INFO] [stdout] 36: 0x55c81664cfd5 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h4594020476cf52d4 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/thread/mod.rs:475 [INFO] [stdout] 37: 0x55c81664cfd5 - as core::ops::function::FnOnce<()>>::call_once::h9d0a6d45b73e29e4 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/panic.rs:318 [INFO] [stdout] 38: 0x55c81664cfd5 - std::panicking::try::do_call::h902fd77b30bb3bb7 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/panicking.rs:331 [INFO] [stdout] 39: 0x55c81664cfd5 - std::panicking::try::hc17d3a628e65d49d [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/panicking.rs:274 [INFO] [stdout] 40: 0x55c81664cfd5 - std::panic::catch_unwind::h9c9d49cbb6b18017 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/panic.rs:394 [INFO] [stdout] 41: 0x55c81664cfd5 - std::thread::Builder::spawn_unchecked::{{closure}}::h6a6f5a333fd631a2 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libstd/thread/mod.rs:474 [INFO] [stdout] 42: 0x55c81664cfd5 - core::ops::function::FnOnce::call_once{{vtable.shim}}::ha6fb197e0ce57f73 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/libcore/ops/function.rs:232 [INFO] [stdout] 43: 0x55c81671e93a - as core::ops::function::FnOnce>::call_once::h1f1fac7de7dd9691 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/liballoc/boxed.rs:1008 [INFO] [stdout] 44: 0x55c81671e93a - as core::ops::function::FnOnce>::call_once::ha031f48633a6af54 [INFO] [stdout] at /rustc/49cae55760da0a43428eba73abcb659bb70cf2e4/src/liballoc/boxed.rs:1008 [INFO] [stdout] 45: 0x55c81671e93a - std::sys::unix::thread::Thread::new::thread_start::h241864caf436e182 [INFO] [stdout] at src/libstd/sys/unix/thread.rs:87 [INFO] [stdout] 46: 0x7f6c5481a609 - start_thread [INFO] [stdout] 47: 0x7f6c54724103 - __clone [INFO] [stdout] 48: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] blocking_reader_test [INFO] [stdout] blocking_writer_test [INFO] [stdout] [INFO] [stdout] test result: FAILED. 0 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--test example' [INFO] running `"docker" "inspect" "c482bd44da737fef432f1384e53e74f53b3b60e796f5ae156652b0df95d7e9b9"` [INFO] running `"docker" "rm" "-f" "c482bd44da737fef432f1384e53e74f53b3b60e796f5ae156652b0df95d7e9b9"` [INFO] [stdout] c482bd44da737fef432f1384e53e74f53b3b60e796f5ae156652b0df95d7e9b9