[INFO] fetching crate greattraits 0.1.0...
[INFO] testing greattraits-0.1.0 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate greattraits 0.1.0 into /workspace/builds/worker-4-tc2/source
[INFO] started tweaking crates.io crate greattraits 0.1.0
[INFO] finished tweaking crates.io crate greattraits 0.1.0
[INFO] tweaked toml for crates.io crate greattraits 0.1.0 written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate greattraits 0.1.0 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 92cf3febe71ed4a85d37b80f90e1d490d9bc0e5077a8ab6951356887b174163d
[INFO] running `Command { std: "docker" "start" "-a" "92cf3febe71ed4a85d37b80f90e1d490d9bc0e5077a8ab6951356887b174163d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "92cf3febe71ed4a85d37b80f90e1d490d9bc0e5077a8ab6951356887b174163d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "92cf3febe71ed4a85d37b80f90e1d490d9bc0e5077a8ab6951356887b174163d", kill_on_drop: false }`
[INFO] [stdout] 92cf3febe71ed4a85d37b80f90e1d490d9bc0e5077a8ab6951356887b174163d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2ad71bb0e1b42686d02f998eede1c32fdc99b6dd35c7ac62d03cd7005a84d8c7
[INFO] running `Command { std: "docker" "start" "-a" "2ad71bb0e1b42686d02f998eede1c32fdc99b6dd35c7ac62d03cd7005a84d8c7", kill_on_drop: false }`
[INFO] [stderr]    Compiling greattraits v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.26s
[INFO] running `Command { std: "docker" "inspect" "2ad71bb0e1b42686d02f998eede1c32fdc99b6dd35c7ac62d03cd7005a84d8c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ad71bb0e1b42686d02f998eede1c32fdc99b6dd35c7ac62d03cd7005a84d8c7", kill_on_drop: false }`
[INFO] [stdout] 2ad71bb0e1b42686d02f998eede1c32fdc99b6dd35c7ac62d03cd7005a84d8c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b0af88015fe8ca410fef58454b7f53bdf548efa4e5574a5c4c6be74daafe5e8a
[INFO] running `Command { std: "docker" "start" "-a" "b0af88015fe8ca410fef58454b7f53bdf548efa4e5574a5c4c6be74daafe5e8a", kill_on_drop: false }`
[INFO] [stderr]    Compiling greattraits v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `Command { std: "docker" "inspect" "b0af88015fe8ca410fef58454b7f53bdf548efa4e5574a5c4c6be74daafe5e8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0af88015fe8ca410fef58454b7f53bdf548efa4e5574a5c4c6be74daafe5e8a", kill_on_drop: false }`
[INFO] [stdout] b0af88015fe8ca410fef58454b7f53bdf548efa4e5574a5c4c6be74daafe5e8a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 250a56458f25f830550a4c102dbe342f89131fcb6ed178dcf7a93889fa534a91
[INFO] running `Command { std: "docker" "start" "-a" "250a56458f25f830550a4c102dbe342f89131fcb6ed178dcf7a93889fa534a91", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/greattraits-3499f7d9dc957448)
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test test::readfile ... ok
[INFO] [stdout] test test::writefile ... FAILED
[INFO] [stdout] test test::create_delete_dir ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- test::writefile stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'test::writefile' (18) panicked at src/test.rs:8:28:
[INFO] [stdout] cannot create file: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5e45df600f12 - std::backtrace_rs::backtrace::libunwind::trace::h589a96ef7638b383
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5e45df600f12 - std::backtrace_rs::backtrace::trace_unsynchronized::h23a30a7548c40de4
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5e45df600f12 - std::sys::backtrace::_print_fmt::h87dabd6535c8c07a
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5e45df600f12 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hffd20ad4e5eca8ab
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5e45df6110af - core::fmt::rt::Argument::fmt::h75c83e3fd5ce2419
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5e45df6110af - core::fmt::write::h6d9d3a7cfd7b84f5
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x5e45df5cdd53 - std::io::default_write_fmt::he11a713685e2464d
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5e45df5cdd53 - std::io::Write::write_fmt::h9d08f7e050bd2612
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5e45df5da282 - std::sys::backtrace::BacktraceLock::print::hb28797143397220e
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5e45df5dee0f - std::panicking::default_hook::{{closure}}::h7555113b62983743
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x5e45df5deca1 - std::panicking::default_hook::h2714b564abe8d914
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x5e45df59defe - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h0e9de8cceb22406e
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   12:     0x5e45df59defe - test::test_main_with_exit_callback::{{closure}}::h8125bd66cf4739d0
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5e45df5df4ae - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h1fd0a0802eaec16b
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   14:     0x5e45df5df4ae - std::panicking::panic_with_hook::h190dc82263685ec5
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x5e45df5df27a - std::panicking::panic_handler::{{closure}}::h8b036a1b366643ac
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x5e45df5da3b9 - std::sys::backtrace::__rust_end_short_backtrace::h45affcfc0c830da8
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x5e45df5c1a8d - __rustc[9b67c8562bba447b]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x5e45df618950 - core::panicking::panic_fmt::hc084f85b1e76c16d
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x5e45df618156 - core::result::unwrap_failed::hf926a4254073b4aa
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/result.rs:1852:5
[INFO] [stdout]   20:     0x5e45df57c08e - core::result::Result<T,E>::expect::ha9214055c0353c04
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/result.rs:1175:23
[INFO] [stdout]   21:     0x5e45df578f84 - greattraits::test::writefile::h730c473e07989acd
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:8:28
[INFO] [stdout]   22:     0x5e45df579067 - greattraits::test::writefile::{{closure}}::h9ebd60df02c2481a
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:6:15
[INFO] [stdout]   23:     0x5e45df57ad76 - core::ops::function::FnOnce::call_once::hcc8e27dd2e1ed73e
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   24:     0x5e45df59dcbb - core::ops::function::FnOnce::call_once::hdbf42be2a49fb464
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   25:     0x5e45df59dcbb - test::__rust_begin_short_backtrace::h8ae08814d38cb356
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/test/src/lib.rs:663:18
[INFO] [stdout]   26:     0x5e45df5b37a5 - test::run_test_in_process::{{closure}}::h54574ee4f414d690
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x5e45df5b37a5 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h01a0b7e7aad1a501
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x5e45df5b37a5 - std::panicking::catch_unwind::do_call::h23820e817c5612cd
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29:     0x5e45df5b37a5 - std::panicking::catch_unwind::h89c73a1febce5587
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30:     0x5e45df5b37a5 - std::panic::catch_unwind::h6f55caf410861914
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x5e45df5b37a5 - test::run_test_in_process::h4db851878e5d3983
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x5e45df5b37a5 - test::run_test::{{closure}}::h57e8c5acaceacd24
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x5e45df58a194 - test::run_test::{{closure}}::he775ccc3a9d3b97e
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x5e45df58a194 - std::sys::backtrace::__rust_begin_short_backtrace::hcd94d85d7765225a
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   35:     0x5e45df58d9da - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::ha814de8393f07830
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x5e45df58d9da - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h8deb00af0abdeaf1
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x5e45df58d9da - std::panicking::catch_unwind::do_call::h1917979b0c279ea2
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:590:40
[INFO] [stdout]   38:     0x5e45df58d9da - std::panicking::catch_unwind::h791ad91fee6ce34e
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:553:19
[INFO] [stdout]   39:     0x5e45df58d9da - std::panic::catch_unwind::h982b8f40ed9c3cce
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x5e45df58d9da - std::thread::Builder::spawn_unchecked_::{{closure}}::h545e54700c945db4
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x5e45df58d9da - core::ops::function::FnOnce::call_once{{vtable.shim}}::hb427481a5227d78a
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   42:     0x5e45df5d458f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h1d452951a81e9d0a
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   43:     0x5e45df5d458f - std::sys::pal::unix::thread::Thread::new::thread_start::h29c84e109630689a
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/pal/unix/thread.rs:118:17
[INFO] [stdout]   44:     0x736d7ab60aa4 - <unknown>
[INFO] [stdout]   45:     0x736d7abeda34 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] ---- test::create_delete_dir stdout ----
[INFO] [stdout] 
[INFO] [stdout] thread 'test::create_delete_dir' (16) panicked at src/test.rs:25:15:
[INFO] [stdout] cannot mkdir!: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5e45df600f12 - std::backtrace_rs::backtrace::libunwind::trace::h589a96ef7638b383
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5e45df600f12 - std::backtrace_rs::backtrace::trace_unsynchronized::h23a30a7548c40de4
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5e45df600f12 - std::sys::backtrace::_print_fmt::h87dabd6535c8c07a
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/backtrace.rs:66:9
[INFO] [stdout]    3:     0x5e45df600f12 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hffd20ad4e5eca8ab
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/backtrace.rs:39:26
[INFO] [stdout]    4:     0x5e45df6110af - core::fmt::rt::Argument::fmt::h75c83e3fd5ce2419
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/fmt/rt.rs:173:76
[INFO] [stdout]    5:     0x5e45df6110af - core::fmt::write::h6d9d3a7cfd7b84f5
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/fmt/mod.rs:1468:25
[INFO] [stdout]    6:     0x5e45df5cdd53 - std::io::default_write_fmt::he11a713685e2464d
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/io/mod.rs:639:11
[INFO] [stdout]    7:     0x5e45df5cdd53 - std::io::Write::write_fmt::h9d08f7e050bd2612
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/io/mod.rs:1954:13
[INFO] [stdout]    8:     0x5e45df5da282 - std::sys::backtrace::BacktraceLock::print::hb28797143397220e
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/backtrace.rs:42:9
[INFO] [stdout]    9:     0x5e45df5dee0f - std::panicking::default_hook::{{closure}}::h7555113b62983743
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:301:27
[INFO] [stdout]   10:     0x5e45df5deca1 - std::panicking::default_hook::h2714b564abe8d914
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:325:9
[INFO] [stdout]   11:     0x5e45df59defe - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h0e9de8cceb22406e
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   12:     0x5e45df59defe - test::test_main_with_exit_callback::{{closure}}::h8125bd66cf4739d0
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/test/src/lib.rs:145:21
[INFO] [stdout]   13:     0x5e45df5df4ae - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h1fd0a0802eaec16b
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/alloc/src/boxed.rs:1999:9
[INFO] [stdout]   14:     0x5e45df5df4ae - std::panicking::panic_with_hook::h190dc82263685ec5
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:842:13
[INFO] [stdout]   15:     0x5e45df5df27a - std::panicking::panic_handler::{{closure}}::h8b036a1b366643ac
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:707:13
[INFO] [stdout]   16:     0x5e45df5da3b9 - std::sys::backtrace::__rust_end_short_backtrace::h45affcfc0c830da8
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/backtrace.rs:174:18
[INFO] [stdout]   17:     0x5e45df5c1a8d - __rustc[9b67c8562bba447b]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:698:5
[INFO] [stdout]   18:     0x5e45df618950 - core::panicking::panic_fmt::hc084f85b1e76c16d
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/panicking.rs:75:14
[INFO] [stdout]   19:     0x5e45df618156 - core::result::unwrap_failed::hf926a4254073b4aa
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/result.rs:1852:5
[INFO] [stdout]   20:     0x5e45df57c13c - core::result::Result<T,E>::expect::hc935e8f799c77a28
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/result.rs:1175:23
[INFO] [stdout]   21:     0x5e45df578aa0 - greattraits::test::create_delete_dir::h2a0e782a68e8c3fb
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:25:15
[INFO] [stdout]   22:     0x5e45df578d87 - greattraits::test::create_delete_dir::{{closure}}::h001850d0b7b081f7
[INFO] [stdout]                                at /opt/rustwide/workdir/src/test.rs:23:23
[INFO] [stdout]   23:     0x5e45df57acb6 - core::ops::function::FnOnce::call_once::h5808b39494e36314
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   24:     0x5e45df59dcbb - core::ops::function::FnOnce::call_once::hdbf42be2a49fb464
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   25:     0x5e45df59dcbb - test::__rust_begin_short_backtrace::h8ae08814d38cb356
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/test/src/lib.rs:663:18
[INFO] [stderr] error: test failed, to rerun pass `--lib`
[INFO] [stdout]   26:     0x5e45df5b37a5 - test::run_test_in_process::{{closure}}::h54574ee4f414d690
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/test/src/lib.rs:686:74
[INFO] [stdout]   27:     0x5e45df5b37a5 - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h01a0b7e7aad1a501
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   28:     0x5e45df5b37a5 - std::panicking::catch_unwind::do_call::h23820e817c5612cd
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:590:40
[INFO] [stdout]   29:     0x5e45df5b37a5 - std::panicking::catch_unwind::h89c73a1febce5587
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:553:19
[INFO] [stdout]   30:     0x5e45df5b37a5 - std::panic::catch_unwind::h6f55caf410861914
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x5e45df5b37a5 - test::run_test_in_process::h4db851878e5d3983
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/test/src/lib.rs:686:27
[INFO] [stdout]   32:     0x5e45df5b37a5 - test::run_test::{{closure}}::h57e8c5acaceacd24
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/test/src/lib.rs:607:43
[INFO] [stdout]   33:     0x5e45df58a194 - test::run_test::{{closure}}::he775ccc3a9d3b97e
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/test/src/lib.rs:637:41
[INFO] [stdout]   34:     0x5e45df58a194 - std::sys::backtrace::__rust_begin_short_backtrace::hcd94d85d7765225a
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/backtrace.rs:158:18
[INFO] [stdout]   35:     0x5e45df58d9da - std::thread::Builder::spawn_unchecked_::{{closure}}::{{closure}}::ha814de8393f07830
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/thread/mod.rs:559:17
[INFO] [stdout]   36:     0x5e45df58d9da - <core::panic::unwind_safe::AssertUnwindSafe<F> as core::ops::function::FnOnce<()>>::call_once::h8deb00af0abdeaf1
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/panic/unwind_safe.rs:272:9
[INFO] [stdout]   37:     0x5e45df58d9da - std::panicking::catch_unwind::do_call::h1917979b0c279ea2
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:590:40
[INFO] [stdout]   38:     0x5e45df58d9da - std::panicking::catch_unwind::h791ad91fee6ce34e
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:553:19
[INFO] [stdout]   39:     0x5e45df58d9da - std::panic::catch_unwind::h982b8f40ed9c3cce
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panic.rs:359:14
[INFO] [stdout]   40:     0x5e45df58d9da - std::thread::Builder::spawn_unchecked_::{{closure}}::h545e54700c945db4
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/thread/mod.rs:557:30
[INFO] [stdout]   41:     0x5e45df58d9da - core::ops::function::FnOnce::call_once{{vtable.shim}}::hb427481a5227d78a
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/ops/function.rs:253:5
[INFO] [stdout]   42:     0x5e45df5d458f - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h1d452951a81e9d0a
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/alloc/src/boxed.rs:1985:9
[INFO] [stdout]   43:     0x5e45df5d458f - std::sys::pal::unix::thread::Thread::new::thread_start::h29c84e109630689a
[INFO] [stdout]                                at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/pal/unix/thread.rs:118:17
[INFO] [stdout]   44:     0x736d7ab60aa4 - <unknown>
[INFO] [stdout]   45:     0x736d7abeda34 - clone
[INFO] [stdout]   46:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     test::create_delete_dir
[INFO] [stdout]     test::writefile
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 1 passed; 2 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.04s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "250a56458f25f830550a4c102dbe342f89131fcb6ed178dcf7a93889fa534a91", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "250a56458f25f830550a4c102dbe342f89131fcb6ed178dcf7a93889fa534a91", kill_on_drop: false }`
[INFO] [stdout] 250a56458f25f830550a4c102dbe342f89131fcb6ed178dcf7a93889fa534a91