[INFO] crate markov 1.0.2 is already in cache [INFO] testing markov-1.0.2 against beta-2019-09-28 for beta-1.39-1 [INFO] extracting crate markov 1.0.2 into work/builds/worker-1/source [INFO] validating manifest of crates.io crate markov 1.0.2 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 markov 1.0.2 [INFO] finished tweaking crates.io crate markov 1.0.2 [INFO] tweaked toml for crates.io crate markov 1.0.2 written to work/builds/worker-1/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-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/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] 38f54739fccf253d4ea3826ff620f3625b9880686bfc8fa5ca1a79775063c87b [INFO] running `"docker" "start" "-a" "38f54739fccf253d4ea3826ff620f3625b9880686bfc8fa5ca1a79775063c87b"` [INFO] [stderr] Compiling fixedbitset v0.1.9 [INFO] [stderr] Compiling ordermap v0.3.5 [INFO] [stderr] Compiling yaml-rust v0.4.3 [INFO] [stderr] Compiling petgraph v0.4.13 [INFO] [stderr] Compiling serde_yaml v0.7.5 [INFO] [stderr] Compiling markov v1.0.2 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 5.34s [INFO] running `"docker" "inspect" "38f54739fccf253d4ea3826ff620f3625b9880686bfc8fa5ca1a79775063c87b"` [INFO] running `"docker" "rm" "-f" "38f54739fccf253d4ea3826ff620f3625b9880686bfc8fa5ca1a79775063c87b"` [INFO] [stdout] 38f54739fccf253d4ea3826ff620f3625b9880686bfc8fa5ca1a79775063c87b [INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/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] ad9aa6fa1906dd4d355822e0caeeb57cd5213682817f8a14746b47ddfd0da5f9 [INFO] running `"docker" "start" "-a" "ad9aa6fa1906dd4d355822e0caeeb57cd5213682817f8a14746b47ddfd0da5f9"` [INFO] [stderr] Compiling markov v1.0.2 (/opt/rustwide/workdir) [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 1.70s [INFO] running `"docker" "inspect" "ad9aa6fa1906dd4d355822e0caeeb57cd5213682817f8a14746b47ddfd0da5f9"` [INFO] running `"docker" "rm" "-f" "ad9aa6fa1906dd4d355822e0caeeb57cd5213682817f8a14746b47ddfd0da5f9"` [INFO] [stdout] ad9aa6fa1906dd4d355822e0caeeb57cd5213682817f8a14746b47ddfd0da5f9 [INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-1/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] 80951b4c1570c9d5a52152fe11dc32788413506b26d02eff3399a71e78ab5af8 [INFO] running `"docker" "start" "-a" "80951b4c1570c9d5a52152fe11dc32788413506b26d02eff3399a71e78ab5af8"` [INFO] [stderr] Finished dev [unoptimized + debuginfo] target(s) in 0.02s [INFO] [stderr] Running /opt/rustwide/target/debug/deps/markov-563c290443e689c5 [INFO] [stdout] [INFO] [stdout] running 16 tests [INFO] [stdout] test test::feed_str ... ok [INFO] [stdout] test test::feed ... ok [INFO] [stdout] test test::generate_from_unfound_token ... ok [INFO] [stdout] test test::generate ... ok [INFO] [stdout] test test::generate_str_from_unfound_token ... ok [INFO] [stdout] test test::generate_for_higher_order ... ok [INFO] [stdout] test test::generate_from_token ... ok [INFO] [stdout] test test::iter ... ok [INFO] [stdout] test test::is_empty ... ok [INFO] [stdout] test test::generate_str_from_token ... ok [INFO] [stdout] test test::str_iter ... ok [INFO] [stdout] test test::new ... ok [INFO] [stdout] test test::generate_str ... ok [INFO] [stdout] test test::iter_for ... ok [INFO] [stdout] test test::str_iter_for ... ok [INFO] [stdout] test test::save_then_load ... FAILED [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] [INFO] [stdout] ---- test::save_then_load stdout ---- [INFO] [stdout] thread 'test::save_then_load' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: Other, message: "Read-only file system" }', src/libcore/result.rs:1165:5 [INFO] [stdout] stack backtrace: [INFO] [stdout] 0: 0x55f54a4dc6c4 - 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: 0x55f54a4dc6c4 - 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: 0x55f54a4dc6c4 - std::sys_common::backtrace::_print_fmt::h85d37830c667a1f9 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:76 [INFO] [stdout] 3: 0x55f54a4dc6c4 - ::fmt::h2b7ac01d5feaf9b2 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:60 [INFO] [stdout] 4: 0x55f54a4fcbcc - core::fmt::write::h7fd0d904495c035f [INFO] [stdout] at src/libcore/fmt/mod.rs:1030 [INFO] [stdout] 5: 0x55f54a40e595 - std::io::Write::write_fmt::h424452e6ba861394 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/io/mod.rs:1412 [INFO] [stdout] 6: 0x55f54a4d8251 - std::io::impls::>::write_fmt::h814a51d8ae1dee4a [INFO] [stdout] at src/libstd/io/impls.rs:141 [INFO] [stdout] 7: 0x55f54a4debd5 - std::sys_common::backtrace::_print::h4c743f7c274a5a74 [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:64 [INFO] [stdout] 8: 0x55f54a4debd5 - std::sys_common::backtrace::print::ha5c4f4bf03800d4d [INFO] [stdout] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stdout] 9: 0x55f54a4debd5 - std::panicking::default_hook::{{closure}}::h8b842185774c09e6 [INFO] [stdout] at src/libstd/panicking.rs:196 [INFO] [stdout] 10: 0x55f54a4de85c - std::panicking::default_hook::hd8ec13ee1bc2a65a [INFO] [stdout] at src/libstd/panicking.rs:207 [INFO] [stdout] 11: 0x55f54a4df2d5 - std::panicking::rust_panic_with_hook::hf3b27166e5f403e7 [INFO] [stdout] at src/libstd/panicking.rs:473 [INFO] [stdout] 12: 0x55f54a4dee72 - std::panicking::continue_panic_fmt::hd961751be84a6f83 [INFO] [stdout] at src/libstd/panicking.rs:380 [INFO] [stdout] 13: 0x55f54a4ded66 - rust_begin_unwind [INFO] [stdout] at src/libstd/panicking.rs:307 [INFO] [stdout] 14: 0x55f54a4f959a - core::panicking::panic_fmt::h467e0364f9237670 [INFO] [stdout] at src/libcore/panicking.rs:85 [INFO] [stdout] 15: 0x55f54a4f9697 - core::result::unwrap_failed::h38f3a56f1dadf080 [INFO] [stdout] at src/libcore/result.rs:1165 [INFO] [stdout] 16: 0x55f54a4cb61f - core::result::Result::unwrap::h359cd903c1537861 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libcore/result.rs:933 [INFO] [stdout] 17: 0x55f54a40770c - markov::test::save_then_load::ha994ae4112002e57 [INFO] [stdout] at src/lib.rs:481 [INFO] [stdout] 18: 0x55f54a40767a - markov::test::save_then_load::{{closure}}::ha841e86fdece38a9 [INFO] [stdout] at src/lib.rs:478 [INFO] [stdout] 19: 0x55f54a3d40ae - core::ops::function::FnOnce::call_once::h504e7d5bc2e9ebee [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libcore/ops/function.rs:227 [INFO] [stdout] 20: 0x55f54a41848f - as core::ops::function::FnOnce>::call_once::h8b428e8a43aaf8e9 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/liballoc/boxed.rs:922 [INFO] [stdout] 21: 0x55f54a4e1a5a - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:80 [INFO] [stdout] 22: 0x55f54a432c9e - std::panicking::try::heccce20d527a3513 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panicking.rs:271 [INFO] [stdout] 23: 0x55f54a432c9e - std::panic::catch_unwind::h7fd8f5d3271f1692 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panic.rs:394 [INFO] [stdout] 24: 0x55f54a432c9e - test::run_test::run_test_inner::{{closure}}::h88b46e5c359957e5 [INFO] [stdout] at src/libtest/lib.rs:1413 [INFO] [stdout] 25: 0x55f54a40dd05 - std::sys_common::backtrace::__rust_begin_short_backtrace::h00847676c8212941 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/sys_common/backtrace.rs:126 [INFO] [stdout] 26: 0x55f54a411e95 - std::thread::Builder::spawn_unchecked::{{closure}}::{{closure}}::h5dd37acd2295488e [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/thread/mod.rs:470 [INFO] [stdout] 27: 0x55f54a411e95 - as core::ops::function::FnOnce<()>>::call_once::h9d32b103da0b97c6 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panic.rs:315 [INFO] [stdout] 28: 0x55f54a411e95 - std::panicking::try::do_call::h2bd819a3056c57cd [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panicking.rs:292 [INFO] [stdout] 29: 0x55f54a4e1a5a - __rust_maybe_catch_panic [INFO] [stdout] at src/libpanic_unwind/lib.rs:80 [INFO] [stdout] 30: 0x55f54a412442 - std::panicking::try::h243a25457a848a1a [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panicking.rs:271 [INFO] [stdout] 31: 0x55f54a412442 - std::panic::catch_unwind::h74b81f55e55e757c [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/panic.rs:394 [INFO] [stdout] 32: 0x55f54a412442 - std::thread::Builder::spawn_unchecked::{{closure}}::h4c2d214a2cffa6cf [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/thread/mod.rs:469 [INFO] [stdout] 33: 0x55f54a412442 - core::ops::function::FnOnce::call_once{{vtable.shim}}::h8a8a187b3fb58e53 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libcore/ops/function.rs:227 [INFO] [stdout] 34: 0x55f54a4d4a9f - as core::ops::function::FnOnce>::call_once::h3cdef3b7ea22cd61 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/liballoc/boxed.rs:922 [INFO] [stdout] 35: 0x55f54a4e11b0 - as core::ops::function::FnOnce>::call_once::hc8f25720bf0d5424 [INFO] [stdout] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/liballoc/boxed.rs:922 [INFO] [stdout] 36: 0x55f54a4e11b0 - std::sys_common::thread::start_thread::h7e8885ccfd5d1932 [INFO] [stdout] at src/libstd/sys_common/thread.rs:13 [INFO] [stdout] 37: 0x55f54a4e11b0 - std::sys::unix::thread::Thread::new::thread_start::h5d24df932d688baf [INFO] [stdout] at src/libstd/sys/unix/thread.rs:79 [INFO] [stdout] 38: 0x7fab26a656db - start_thread [INFO] [stdout] 39: 0x7fab2657688f - __clone [INFO] [stdout] 40: 0x0 - [INFO] [stdout] [INFO] [stdout] [INFO] [stdout] failures: [INFO] [stdout] test::save_then_load [INFO] [stdout] [INFO] [stdout] test result: FAILED. 15 passed; 1 failed; 0 ignored; 0 measured; 0 filtered out [INFO] [stdout] [INFO] [stderr] error: test failed, to rerun pass '--lib' [INFO] running `"docker" "inspect" "80951b4c1570c9d5a52152fe11dc32788413506b26d02eff3399a71e78ab5af8"` [INFO] running `"docker" "rm" "-f" "80951b4c1570c9d5a52152fe11dc32788413506b26d02eff3399a71e78ab5af8"` [INFO] [stdout] 80951b4c1570c9d5a52152fe11dc32788413506b26d02eff3399a71e78ab5af8