[INFO] cloning repository https://github.com/mdesmet/kvstore
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mdesmet/kvstore" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdesmet%2Fkvstore", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdesmet%2Fkvstore'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9ea513869f44753745066d4f3c9353001deb53f1
[INFO] testing mdesmet/kvstore against master#f9988fefd3add01f414f52b414308e7872622fee for pr-155114
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmdesmet%2Fkvstore" "/workspace/builds/worker-7-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/mdesmet/kvstore
[INFO] finished tweaking git repo https://github.com/mdesmet/kvstore
[INFO] tweaked toml for git repo https://github.com/mdesmet/kvstore written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/mdesmet/kvstore on toolchain f9988fefd3add01f414f52b414308e7872622fee
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9988fefd3add01f414f52b414308e7872622fee" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/mdesmet/kvstore already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f9988fefd3add01f414f52b414308e7872622fee" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded predicates-core v1.0.2
[INFO] [stderr]   Downloaded redox_syscall v0.2.9
[INFO] [stderr]   Downloaded rustc-demangle v0.1.20
[INFO] [stderr]   Downloaded predicates-tree v1.0.2
[INFO] [stderr]   Downloaded backtrace v0.3.60
[INFO] [stderr]   Downloaded addr2line v0.15.2
[INFO] [stderr]   Downloaded assert_cmd v1.0.7
[INFO] [stderr]   Downloaded predicates v2.0.0
[INFO] [stderr]   Downloaded syn v1.0.73
[INFO] [stderr]   Downloaded itertools v0.10.1
[INFO] [stderr]   Downloaded object v0.25.3
[INFO] [stderr]   Downloaded bstr v0.2.16
[INFO] [stderr]   Downloaded gimli v0.24.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+f9988fefd3add01f414f52b414308e7872622fee" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] e9b760dd2e2351bd6389f5987a9ec3a6f5a57bdb12595bf470417e141d355202
[INFO] running `Command { std: "docker" "start" "-a" "e9b760dd2e2351bd6389f5987a9ec3a6f5a57bdb12595bf470417e141d355202", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "e9b760dd2e2351bd6389f5987a9ec3a6f5a57bdb12595bf470417e141d355202", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e9b760dd2e2351bd6389f5987a9ec3a6f5a57bdb12595bf470417e141d355202", kill_on_drop: false }`
[INFO] [stdout] e9b760dd2e2351bd6389f5987a9ec3a6f5a57bdb12595bf470417e141d355202
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+f9988fefd3add01f414f52b414308e7872622fee" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 2c7b1fe57dc7e495bf1888b2b79e8079ec6f2816789c27961c543a13eb985060
[INFO] running `Command { std: "docker" "start" "-a" "2c7b1fe57dc7e495bf1888b2b79e8079ec6f2816789c27961c543a13eb985060", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling syn v1.0.73
[INFO] [stderr]    Compiling libc v0.2.98
[INFO] [stderr]    Compiling memchr v2.4.0
[INFO] [stderr]    Compiling serde_derive v1.0.126
[INFO] [stderr]    Compiling cc v1.0.69
[INFO] [stderr]    Compiling serde v1.0.126
[INFO] [stderr]    Compiling gimli v0.24.0
[INFO] [stderr]    Compiling unicode-width v0.1.8
[INFO] [stderr]    Compiling rustc-demangle v0.1.20
[INFO] [stderr]    Compiling serde_json v1.0.64
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling object v0.25.3
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]    Compiling backtrace v0.3.60
[INFO] [stderr]    Compiling addr2line v0.15.2
[INFO] [stderr]    Compiling synstructure v0.12.5
[INFO] [stderr]    Compiling failure_derive v0.1.8
[INFO] [stderr]    Compiling failure v0.1.8
[INFO] [stderr]    Compiling kvs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 18.78s
[INFO] running `Command { std: "docker" "inspect" "2c7b1fe57dc7e495bf1888b2b79e8079ec6f2816789c27961c543a13eb985060", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2c7b1fe57dc7e495bf1888b2b79e8079ec6f2816789c27961c543a13eb985060", kill_on_drop: false }`
[INFO] [stdout] 2c7b1fe57dc7e495bf1888b2b79e8079ec6f2816789c27961c543a13eb985060
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+f9988fefd3add01f414f52b414308e7872622fee" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c5faa66328c1cbdf189ece0eed3946251f0ddfe47b9bfb4e89babe0829d5a443
[INFO] running `Command { std: "docker" "start" "-a" "c5faa66328c1cbdf189ece0eed3946251f0ddfe47b9bfb4e89babe0829d5a443", kill_on_drop: false }`
[INFO] [stderr]    Compiling getrandom v0.2.3
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]    Compiling predicates-core v1.0.2
[INFO] [stderr]    Compiling normalize-line-endings v0.3.0
[INFO] [stderr]    Compiling regex-automata v0.1.10
[INFO] [stderr]    Compiling treeline v0.1.0
[INFO] [stderr]    Compiling difflib v0.4.0
[INFO] [stderr]    Compiling itertools v0.10.1
[INFO] [stderr]    Compiling wait-timeout v0.2.0
[INFO] [stderr]    Compiling walkdir v2.3.2
[INFO] [stderr]    Compiling predicates-tree v1.0.2
[INFO] [stderr]    Compiling bstr v0.2.16
[INFO] [stderr]    Compiling rand_core v0.6.3
[INFO] [stderr]    Compiling rand_chacha v0.3.1
[INFO] [stderr]    Compiling rand v0.8.4
[INFO] [stderr]    Compiling float-cmp v0.8.0
[INFO] [stderr]    Compiling tempfile v3.2.0
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]    Compiling predicates v2.0.0
[INFO] [stderr]    Compiling assert_cmd v1.0.7
[INFO] [stderr]    Compiling kvs v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 11.06s
[INFO] running `Command { std: "docker" "inspect" "c5faa66328c1cbdf189ece0eed3946251f0ddfe47b9bfb4e89babe0829d5a443", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5faa66328c1cbdf189ece0eed3946251f0ddfe47b9bfb4e89babe0829d5a443", kill_on_drop: false }`
[INFO] [stdout] c5faa66328c1cbdf189ece0eed3946251f0ddfe47b9bfb4e89babe0829d5a443
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+f9988fefd3add01f414f52b414308e7872622fee" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 4a8ec0b73f5ea7e46022c681b0dab94bf517464fcf21ccf58cdfa5700628302d
[INFO] running `Command { std: "docker" "start" "-a" "4a8ec0b73f5ea7e46022c681b0dab94bf517464fcf21ccf58cdfa5700628302d", kill_on_drop: false }`
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 0.11s
[INFO] [stderr]      Running unittests src/lib.rs (/opt/rustwide/target/debug/deps/kvs-af97c775ce2ba4da)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running unittests src/bin/kvs.rs (/opt/rustwide/target/debug/deps/kvs-d45ce17ab658d891)
[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; finished in 0.00s
[INFO] [stdout] 
[INFO] [stderr]      Running tests/tests.rs (/opt/rustwide/target/debug/deps/tests-dc197ddcdb178e4a)
[INFO] [stdout] 
[INFO] [stdout] running 17 tests
[INFO] [stdout] test get_non_existent_value ... ok
[INFO] [stdout] test cli_invalid_subcommand ... ok
[INFO] [stdout] test cli_set ... ok
[INFO] [stdout] test cli_rm_non_existent_key ... ok
[INFO] [stdout] test overwrite_value ... ok
[INFO] [stdout] test get_stored_value ... ok
[INFO] [stdout] test cli_get_stored ... ok
[INFO] [stdout] test remove_key ... ok
[INFO] [stdout] test cli_rm_stored ... ok
[INFO] [stdout] test remove_non_existent_key ... ok
[INFO] [stdout] test cli_invalid_rm ... ok
[INFO] [stdout] test cli_version ... ok
[INFO] [stdout] test cli_invalid_get ... ok
[INFO] [stdout] test cli_invalid_set ... ok
[INFO] [stdout] test cli_get_non_existent_key ... ok
[INFO] [stdout] test cli_no_args ... ok
[INFO] [stdout] test compaction ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 17 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 33.87s
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests kvs
[INFO] [stdout] 
[INFO] [stdout] running 3 tests
[INFO] [stdout] test src/kv.rs - kv::KvStore::set (line 51) ... FAILED
[INFO] [stdout] test src/kv.rs - kv::KvStore::remove (line 102) ... FAILED
[INFO] [stdout] test src/kv.rs - kv::KvStore::get (line 68) ... FAILED
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout] 
[INFO] [stdout] ---- src/kv.rs - kv::KvStore::set (line 51) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] 
[INFO] [stdout] thread 'main' (121) panicked at src/kv.rs:7:44:
[INFO] [stdout] Could not open file: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] 
[INFO] [stdout]    0: <failure::backtrace::internal::InternalBacktrace>::new
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/failure-0.1.8/src/backtrace/internal.rs:46:44
[INFO] [stdout]    1: <failure::backtrace::Backtrace>::new
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/failure-0.1.8/src/backtrace/mod.rs:121:35
[INFO] [stdout]    2: <failure::error::error_impl::ErrorImpl as core::convert::From<std::io::error::Error>>::from
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/failure-0.1.8/src/error/error_impl.rs:19:17
[INFO] [stdout]    3: <failure::error::Error as core::convert::From<std::io::error::Error>>::from
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/failure-0.1.8/src/error/mod.rs:36:18
[INFO] [stdout]    4: <core::result::Result<kvs::kv::KvStore, failure::error::Error> as core::ops::try_trait::FromResidual<core::result::Result<core::convert::Infallible, std::io::error::Error>>>::from_residual
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/core/src/result.rs:2189:27
[INFO] [stdout]    5: <kvs::kv::KvStore>::open
[INFO] [stdout]              at src/kv.rs:30:20
[INFO] [stdout]    6: rust_out::main::_doctest_main_src_kv_rs_51_0
[INFO] [stdout]    7: rust_out::main
[INFO] [stdout]    8: <fn() as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]    9: std::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stdout]   10: std::rt::lang_start::<()>::{closure#0}
[INFO] [stdout]   11: <&dyn core::ops::function::Fn<(), Output = i32> + core::panic::unwind_safe::RefUnwindSafe + core::marker::Sync as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/core/src/ops/function.rs:287:21
[INFO] [stdout]       std::panicking::catch_unwind::do_call::<&dyn core::ops::function::Fn<(), Output = i32> + core::panic::unwind_safe::RefUnwindSafe + core::marker::Sync, i32>
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:581:40
[INFO] [stdout]       std::panicking::catch_unwind::<i32, &dyn core::ops::function::Fn<(), Output = i32> + core::panic::unwind_safe::RefUnwindSafe + core::marker::Sync>
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:544:19
[INFO] [stdout]       std::panic::catch_unwind::<&dyn core::ops::function::Fn<(), Output = i32> + core::panic::unwind_safe::RefUnwindSafe + core::marker::Sync, i32>
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panic.rs:359:14
[INFO] [stdout]       std::rt::lang_start_internal::{closure#0}
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/rt.rs:175:24
[INFO] [stdout]       std::panicking::catch_unwind::do_call::<std::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:581:40
[INFO] [stdout]       std::panicking::catch_unwind::<isize, std::rt::lang_start_internal::{closure#0}>
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:544:19
[INFO] [stdout]       std::panic::catch_unwind::<std::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panic.rs:359:14
[INFO] [stdout]       std::rt::lang_start_internal
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/rt.rs:171:5
[INFO] [stdout]   12: std::rt::lang_start::<()>
[INFO] [stdout]   13: main
[INFO] [stdout]   14: <unknown>
[INFO] [stdout]   15: __libc_start_main
[INFO] [stdout]   16: _start
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x59dd32f4317a - std[1209cfb42f6d497f]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x59dd32f4317a - std[1209cfb42f6d497f]::backtrace_rs::backtrace::trace_unsynchronized::<std[1209cfb42f6d497f]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x59dd32f4317a - std[1209cfb42f6d497f]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x59dd32f4317a - <<std[1209cfb42f6d497f]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[4a92201981c6b77a]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x59dd32f5581a - <core[4a92201981c6b77a]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x59dd32f5581a - core[4a92201981c6b77a]::fmt::write
[INFO] [stdout]    6:     0x59dd32f46a52 - std[1209cfb42f6d497f]::io::default_write_fmt::<std[1209cfb42f6d497f]::sys::stdio::unix::Stderr>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/io/mod.rs:621:11
[INFO] [stdout]    7:     0x59dd32f46a52 - <std[1209cfb42f6d497f]::sys::stdio::unix::Stderr as std[1209cfb42f6d497f]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/io/mod.rs:1976:13
[INFO] [stdout]    8:     0x59dd32f2e1af - <std[1209cfb42f6d497f]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x59dd32f2e1af - std[1209cfb42f6d497f]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x59dd32f3ef91 - std[1209cfb42f6d497f]::panicking::default_hook
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:319:9
[INFO] [stdout]   11:     0x59dd32f3f14b - std[1209cfb42f6d497f]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:825:13
[INFO] [stdout]   12:     0x59dd32f2e268 - std[1209cfb42f6d497f]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:698:13
[INFO] [stdout]   13:     0x59dd32f23599 - std[1209cfb42f6d497f]::sys::backtrace::__rust_end_short_backtrace::<std[1209cfb42f6d497f]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   14:     0x59dd32f2ec0d - __rustc[4effac393e9f3da6]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:689:5
[INFO] [stdout]   15:     0x59dd32f55fdc - core[4a92201981c6b77a]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/core/src/panicking.rs:80:14
[INFO] [stdout]   16:     0x59dd32f55d22 - core[4a92201981c6b77a]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/core/src/result.rs:1867:5
[INFO] [stdout]   17:     0x59dd32e4c08d - <core[4a92201981c6b77a]::result::Result<kvs[3680772d88cbf73f]::kv::KvStore, failure[14c876526e724342]::error::Error>>::expect
[INFO] [stdout]   18:     0x59dd32e4c1ec - rust_out[b88cb90d1d05b049]::main::_doctest_main_src_kv_rs_51_0
[INFO] [stdout]   19:     0x59dd32e4c006 - rust_out[b88cb90d1d05b049]::main
[INFO] [stdout]   20:     0x59dd32e4c373 - <fn() as core[4a92201981c6b77a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   21:     0x59dd32e4bfc6 - std[1209cfb42f6d497f]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stdout]   22:     0x59dd32e4bfd9 - std[1209cfb42f6d497f]::rt::lang_start::<()>::{closure#0}
[INFO] [stdout]   23:     0x59dd32f3e637 - <&dyn core[4a92201981c6b77a]::ops::function::Fn<(), Output = i32> + core[4a92201981c6b77a]::panic::unwind_safe::RefUnwindSafe + core[4a92201981c6b77a]::marker::Sync as core[4a92201981c6b77a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/core/src/ops/function.rs:287:21
[INFO] [stdout]   24:     0x59dd32f3e637 - std[1209cfb42f6d497f]::panicking::catch_unwind::do_call::<&dyn core[4a92201981c6b77a]::ops::function::Fn<(), Output = i32> + core[4a92201981c6b77a]::panic::unwind_safe::RefUnwindSafe + core[4a92201981c6b77a]::marker::Sync, i32>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:581:40
[INFO] [stdout]   25:     0x59dd32f3e637 - std[1209cfb42f6d497f]::panicking::catch_unwind::<i32, &dyn core[4a92201981c6b77a]::ops::function::Fn<(), Output = i32> + core[4a92201981c6b77a]::panic::unwind_safe::RefUnwindSafe + core[4a92201981c6b77a]::marker::Sync>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:544:19
[INFO] [stdout]   26:     0x59dd32f3e637 - std[1209cfb42f6d497f]::panic::catch_unwind::<&dyn core[4a92201981c6b77a]::ops::function::Fn<(), Output = i32> + core[4a92201981c6b77a]::panic::unwind_safe::RefUnwindSafe + core[4a92201981c6b77a]::marker::Sync, i32>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panic.rs:359:14
[INFO] [stdout]   27:     0x59dd32f3e637 - std[1209cfb42f6d497f]::rt::lang_start_internal::{closure#0}
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/rt.rs:175:24
[INFO] [stdout]   28:     0x59dd32f3e637 - std[1209cfb42f6d497f]::panicking::catch_unwind::do_call::<std[1209cfb42f6d497f]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x59dd32f3e637 - std[1209cfb42f6d497f]::panicking::catch_unwind::<isize, std[1209cfb42f6d497f]::rt::lang_start_internal::{closure#0}>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x59dd32f3e637 - std[1209cfb42f6d497f]::panic::catch_unwind::<std[1209cfb42f6d497f]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x59dd32f3e637 - std[1209cfb42f6d497f]::rt::lang_start_internal
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/rt.rs:171:5
[INFO] [stdout]   32:     0x59dd32e4bfb1 - std[1209cfb42f6d497f]::rt::lang_start::<()>
[INFO] [stdout]   33:     0x59dd32e4c3d5 - main
[INFO] [stdout]   34:     0x71e25c3a91ca - <unknown>
[INFO] [stdout]   35:     0x71e25c3a928b - __libc_start_main
[INFO] [stdout]   36:     0x59dd32e4bec5 - _start
[INFO] [stdout]   37:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] ---- src/kv.rs - kv::KvStore::remove (line 102) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] 
[INFO] [stdout] thread 'main' (122) panicked at src/kv.rs:7:44:
[INFO] [stdout] Could not open file: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] 
[INFO] [stdout]    0: <failure::backtrace::internal::InternalBacktrace>::new
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/failure-0.1.8/src/backtrace/internal.rs:46:44
[INFO] [stdout]    1: <failure::backtrace::Backtrace>::new
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/failure-0.1.8/src/backtrace/mod.rs:121:35
[INFO] [stdout]    2: <failure::error::error_impl::ErrorImpl as core::convert::From<std::io::error::Error>>::from
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/failure-0.1.8/src/error/error_impl.rs:19:17
[INFO] [stdout]    3: <failure::error::Error as core::convert::From<std::io::error::Error>>::from
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/failure-0.1.8/src/error/mod.rs:36:18
[INFO] [stdout]    4: <core::result::Result<kvs::kv::KvStore, failure::error::Error> as core::ops::try_trait::FromResidual<core::result::Result<core::convert::Infallible, std::io::error::Error>>>::from_residual
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/core/src/result.rs:2189:27
[INFO] [stdout]    5: <kvs::kv::KvStore>::open
[INFO] [stdout]              at src/kv.rs:30:20
[INFO] [stdout]    6: rust_out::main::_doctest_main_src_kv_rs_102_0
[INFO] [stdout]    7: rust_out::main
[INFO] [stdout]    8: <fn() as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]    9: std::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stdout]   10: std::rt::lang_start::<()>::{closure#0}
[INFO] [stdout]   11: <&dyn core::ops::function::Fn<(), Output = i32> + core::panic::unwind_safe::RefUnwindSafe + core::marker::Sync as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/core/src/ops/function.rs:287:21
[INFO] [stdout]       std::panicking::catch_unwind::do_call::<&dyn core::ops::function::Fn<(), Output = i32> + core::panic::unwind_safe::RefUnwindSafe + core::marker::Sync, i32>
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:581:40
[INFO] [stdout]       std::panicking::catch_unwind::<i32, &dyn core::ops::function::Fn<(), Output = i32> + core::panic::unwind_safe::RefUnwindSafe + core::marker::Sync>
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:544:19
[INFO] [stdout]       std::panic::catch_unwind::<&dyn core::ops::function::Fn<(), Output = i32> + core::panic::unwind_safe::RefUnwindSafe + core::marker::Sync, i32>
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panic.rs:359:14
[INFO] [stdout]       std::rt::lang_start_internal::{closure#0}
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/rt.rs:175:24
[INFO] [stdout]       std::panicking::catch_unwind::do_call::<std::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:581:40
[INFO] [stdout]       std::panicking::catch_unwind::<isize, std::rt::lang_start_internal::{closure#0}>
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:544:19
[INFO] [stdout]       std::panic::catch_unwind::<std::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panic.rs:359:14
[INFO] [stdout]       std::rt::lang_start_internal
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/rt.rs:171:5
[INFO] [stdout]   12: std::rt::lang_start::<()>
[INFO] [stdout]   13: main
[INFO] [stdout]   14: <unknown>
[INFO] [stdout]   15: __libc_start_main
[INFO] [stdout]   16: _start
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x574e8541f1ca - std[1209cfb42f6d497f]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x574e8541f1ca - std[1209cfb42f6d497f]::backtrace_rs::backtrace::trace_unsynchronized::<std[1209cfb42f6d497f]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x574e8541f1ca - std[1209cfb42f6d497f]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x574e8541f1ca - <<std[1209cfb42f6d497f]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[4a92201981c6b77a]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x574e8543186a - <core[4a92201981c6b77a]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x574e8543186a - core[4a92201981c6b77a]::fmt::write
[INFO] [stdout]    6:     0x574e85422aa2 - std[1209cfb42f6d497f]::io::default_write_fmt::<std[1209cfb42f6d497f]::sys::stdio::unix::Stderr>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/io/mod.rs:621:11
[INFO] [stdout]    7:     0x574e85422aa2 - <std[1209cfb42f6d497f]::sys::stdio::unix::Stderr as std[1209cfb42f6d497f]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/io/mod.rs:1976:13
[INFO] [stdout]    8:     0x574e8540a1ff - <std[1209cfb42f6d497f]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x574e8540a1ff - std[1209cfb42f6d497f]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x574e8541afe1 - std[1209cfb42f6d497f]::panicking::default_hook
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:319:9
[INFO] [stdout]   11:     0x574e8541b19b - std[1209cfb42f6d497f]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:825:13
[INFO] [stdout]   12:     0x574e8540a2b8 - std[1209cfb42f6d497f]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:698:13
[INFO] [stdout]   13:     0x574e853ff5e9 - std[1209cfb42f6d497f]::sys::backtrace::__rust_end_short_backtrace::<std[1209cfb42f6d497f]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   14:     0x574e8540ac5d - __rustc[4effac393e9f3da6]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:689:5
[INFO] [stdout]   15:     0x574e8543202c - core[4a92201981c6b77a]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/core/src/panicking.rs:80:14
[INFO] [stdout]   16:     0x574e85431d72 - core[4a92201981c6b77a]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/core/src/result.rs:1867:5
[INFO] [stdout]   17:     0x574e853269fd - <core[4a92201981c6b77a]::result::Result<kvs[3680772d88cbf73f]::kv::KvStore, failure[14c876526e724342]::error::Error>>::expect
[INFO] [stdout]   18:     0x574e85326b5f - rust_out[b88cb90d1d05b049]::main::_doctest_main_src_kv_rs_102_0
[INFO] [stdout]   19:     0x574e85326896 - rust_out[b88cb90d1d05b049]::main
[INFO] [stdout]   20:     0x574e85326f93 - <fn() as core[4a92201981c6b77a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   21:     0x574e85326856 - std[1209cfb42f6d497f]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stdout]   22:     0x574e85326869 - std[1209cfb42f6d497f]::rt::lang_start::<()>::{closure#0}
[INFO] [stdout]   23:     0x574e8541a687 - <&dyn core[4a92201981c6b77a]::ops::function::Fn<(), Output = i32> + core[4a92201981c6b77a]::panic::unwind_safe::RefUnwindSafe + core[4a92201981c6b77a]::marker::Sync as core[4a92201981c6b77a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/core/src/ops/function.rs:287:21
[INFO] [stdout]   24:     0x574e8541a687 - std[1209cfb42f6d497f]::panicking::catch_unwind::do_call::<&dyn core[4a92201981c6b77a]::ops::function::Fn<(), Output = i32> + core[4a92201981c6b77a]::panic::unwind_safe::RefUnwindSafe + core[4a92201981c6b77a]::marker::Sync, i32>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:581:40
[INFO] [stdout]   25:     0x574e8541a687 - std[1209cfb42f6d497f]::panicking::catch_unwind::<i32, &dyn core[4a92201981c6b77a]::ops::function::Fn<(), Output = i32> + core[4a92201981c6b77a]::panic::unwind_safe::RefUnwindSafe + core[4a92201981c6b77a]::marker::Sync>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:544:19
[INFO] [stdout]   26:     0x574e8541a687 - std[1209cfb42f6d497f]::panic::catch_unwind::<&dyn core[4a92201981c6b77a]::ops::function::Fn<(), Output = i32> + core[4a92201981c6b77a]::panic::unwind_safe::RefUnwindSafe + core[4a92201981c6b77a]::marker::Sync, i32>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panic.rs:359:14
[INFO] [stdout]   27:     0x574e8541a687 - std[1209cfb42f6d497f]::rt::lang_start_internal::{closure#0}
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/rt.rs:175:24
[INFO] [stdout]   28:     0x574e8541a687 - std[1209cfb42f6d497f]::panicking::catch_unwind::do_call::<std[1209cfb42f6d497f]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x574e8541a687 - std[1209cfb42f6d497f]::panicking::catch_unwind::<isize, std[1209cfb42f6d497f]::rt::lang_start_internal::{closure#0}>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x574e8541a687 - std[1209cfb42f6d497f]::panic::catch_unwind::<std[1209cfb42f6d497f]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x574e8541a687 - std[1209cfb42f6d497f]::rt::lang_start_internal
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/rt.rs:171:5
[INFO] [stdout]   32:     0x574e853267d1 - std[1209cfb42f6d497f]::rt::lang_start::<()>
[INFO] [stdout]   33:     0x574e85326ff5 - main
[INFO] [stdout]   34:     0x7d7b8685b1ca - <unknown>
[INFO] [stdout]   35:     0x7d7b8685b28b - __libc_start_main
[INFO] [stdout]   36:     0x574e853266e5 - _start
[INFO] [stdout]   37:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] ---- src/kv.rs - kv::KvStore::get (line 68) stdout ----
[INFO] [stdout] Test executable failed (exit status: 101).
[INFO] [stdout] 
[INFO] [stdout] stderr:
[INFO] [stdout] 
[INFO] [stdout] thread 'main' (139) panicked at src/kv.rs:7:44:
[INFO] [stdout] Could not open file: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" }
[INFO] [stdout] 
[INFO] [stdout]    0: <failure::backtrace::internal::InternalBacktrace>::new
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/failure-0.1.8/src/backtrace/internal.rs:46:44
[INFO] [stdout]    1: <failure::backtrace::Backtrace>::new
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/failure-0.1.8/src/backtrace/mod.rs:121:35
[INFO] [stdout]    2: <failure::error::error_impl::ErrorImpl as core::convert::From<std::io::error::Error>>::from
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/failure-0.1.8/src/error/error_impl.rs:19:17
[INFO] [stdout]    3: <failure::error::Error as core::convert::From<std::io::error::Error>>::from
[INFO] [stdout]              at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/failure-0.1.8/src/error/mod.rs:36:18
[INFO] [stdout]    4: <core::result::Result<kvs::kv::KvStore, failure::error::Error> as core::ops::try_trait::FromResidual<core::result::Result<core::convert::Infallible, std::io::error::Error>>>::from_residual
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/core/src/result.rs:2189:27
[INFO] [stdout]    5: <kvs::kv::KvStore>::open
[INFO] [stdout]              at src/kv.rs:30:20
[INFO] [stdout]    6: rust_out::main::_doctest_main_src_kv_rs_68_0
[INFO] [stdout]    7: rust_out::main
[INFO] [stdout]    8: <fn() as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]    9: std::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stdout]   10: std::rt::lang_start::<()>::{closure#0}
[INFO] [stdout]   11: <&dyn core::ops::function::Fn<(), Output = i32> + core::panic::unwind_safe::RefUnwindSafe + core::marker::Sync as core::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/core/src/ops/function.rs:287:21
[INFO] [stdout]       std::panicking::catch_unwind::do_call::<&dyn core::ops::function::Fn<(), Output = i32> + core::panic::unwind_safe::RefUnwindSafe + core::marker::Sync, i32>
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:581:40
[INFO] [stdout]       std::panicking::catch_unwind::<i32, &dyn core::ops::function::Fn<(), Output = i32> + core::panic::unwind_safe::RefUnwindSafe + core::marker::Sync>
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:544:19
[INFO] [stdout]       std::panic::catch_unwind::<&dyn core::ops::function::Fn<(), Output = i32> + core::panic::unwind_safe::RefUnwindSafe + core::marker::Sync, i32>
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panic.rs:359:14
[INFO] [stdout]       std::rt::lang_start_internal::{closure#0}
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/rt.rs:175:24
[INFO] [stdout]       std::panicking::catch_unwind::do_call::<std::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:581:40
[INFO] [stdout]       std::panicking::catch_unwind::<isize, std::rt::lang_start_internal::{closure#0}>
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:544:19
[INFO] [stdout]       std::panic::catch_unwind::<std::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panic.rs:359:14
[INFO] [stdout]       std::rt::lang_start_internal
[INFO] [stdout]              at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/rt.rs:171:5
[INFO] [stdout]   12: std::rt::lang_start::<()>
[INFO] [stdout]   13: main
[INFO] [stdout]   14: <unknown>
[INFO] [stdout]   15: __libc_start_main
[INFO] [stdout]   16: _start
[INFO] [stdout] 
[INFO] [stdout] stack backtrace:
[INFO] [stdout]    0:     0x5774b77025ea - std[1209cfb42f6d497f]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stdout]    1:     0x5774b77025ea - std[1209cfb42f6d497f]::backtrace_rs::backtrace::trace_unsynchronized::<std[1209cfb42f6d497f]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stdout]    2:     0x5774b77025ea - std[1209cfb42f6d497f]::sys::backtrace::_print_fmt
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/sys/backtrace.rs:74:9
[INFO] [stdout]    3:     0x5774b77025ea - <<std[1209cfb42f6d497f]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[4a92201981c6b77a]::fmt::Display>::fmt
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/sys/backtrace.rs:44:26
[INFO] [stdout]    4:     0x5774b7714c8a - <core[4a92201981c6b77a]::fmt::rt::Argument>::fmt
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/core/src/fmt/rt.rs:152:76
[INFO] [stdout]    5:     0x5774b7714c8a - core[4a92201981c6b77a]::fmt::write
[INFO] [stdout]    6:     0x5774b7705ec2 - std[1209cfb42f6d497f]::io::default_write_fmt::<std[1209cfb42f6d497f]::sys::stdio::unix::Stderr>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/io/mod.rs:621:11
[INFO] [stdout]    7:     0x5774b7705ec2 - <std[1209cfb42f6d497f]::sys::stdio::unix::Stderr as std[1209cfb42f6d497f]::io::Write>::write_fmt
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/io/mod.rs:1976:13
[INFO] [stdout]    8:     0x5774b76ed61f - <std[1209cfb42f6d497f]::sys::backtrace::BacktraceLock>::print
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/sys/backtrace.rs:47:9
[INFO] [stdout]    9:     0x5774b76ed61f - std[1209cfb42f6d497f]::panicking::default_hook::{closure#0}
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:292:27
[INFO] [stdout]   10:     0x5774b76fe401 - std[1209cfb42f6d497f]::panicking::default_hook
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:319:9
[INFO] [stdout]   11:     0x5774b76fe5bb - std[1209cfb42f6d497f]::panicking::panic_with_hook
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:825:13
[INFO] [stdout]   12:     0x5774b76ed6d8 - std[1209cfb42f6d497f]::panicking::panic_handler::{closure#0}
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:698:13
[INFO] [stdout]   13:     0x5774b76e2a09 - std[1209cfb42f6d497f]::sys::backtrace::__rust_end_short_backtrace::<std[1209cfb42f6d497f]::panicking::panic_handler::{closure#0}, !>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/sys/backtrace.rs:182:18
[INFO] [stdout]   14:     0x5774b76ee07d - __rustc[4effac393e9f3da6]::rust_begin_unwind
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:689:5
[INFO] [stdout]   15:     0x5774b771544c - core[4a92201981c6b77a]::panicking::panic_fmt
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/core/src/panicking.rs:80:14
[INFO] [stdout]   16:     0x5774b7715192 - core[4a92201981c6b77a]::result::unwrap_failed
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/core/src/result.rs:1867:5
[INFO] [stdout]   17:     0x5774b760a5cd - <core[4a92201981c6b77a]::result::Result<kvs[3680772d88cbf73f]::kv::KvStore, failure[14c876526e724342]::error::Error>>::expect
[INFO] [stdout]   18:     0x5774b760a72c - rust_out[b88cb90d1d05b049]::main::_doctest_main_src_kv_rs_68_0
[INFO] [stdout]   19:     0x5774b760a466 - rust_out[b88cb90d1d05b049]::main
[INFO] [stdout]   20:     0x5774b760ab73 - <fn() as core[4a92201981c6b77a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]   21:     0x5774b760a426 - std[1209cfb42f6d497f]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stdout]   22:     0x5774b760a439 - std[1209cfb42f6d497f]::rt::lang_start::<()>::{closure#0}
[INFO] [stdout]   23:     0x5774b76fdaa7 - <&dyn core[4a92201981c6b77a]::ops::function::Fn<(), Output = i32> + core[4a92201981c6b77a]::panic::unwind_safe::RefUnwindSafe + core[4a92201981c6b77a]::marker::Sync as core[4a92201981c6b77a]::ops::function::FnOnce<()>>::call_once
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/core/src/ops/function.rs:287:21
[INFO] [stdout]   24:     0x5774b76fdaa7 - std[1209cfb42f6d497f]::panicking::catch_unwind::do_call::<&dyn core[4a92201981c6b77a]::ops::function::Fn<(), Output = i32> + core[4a92201981c6b77a]::panic::unwind_safe::RefUnwindSafe + core[4a92201981c6b77a]::marker::Sync, i32>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:581:40
[INFO] [stdout]   25:     0x5774b76fdaa7 - std[1209cfb42f6d497f]::panicking::catch_unwind::<i32, &dyn core[4a92201981c6b77a]::ops::function::Fn<(), Output = i32> + core[4a92201981c6b77a]::panic::unwind_safe::RefUnwindSafe + core[4a92201981c6b77a]::marker::Sync>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:544:19
[INFO] [stdout]   26:     0x5774b76fdaa7 - std[1209cfb42f6d497f]::panic::catch_unwind::<&dyn core[4a92201981c6b77a]::ops::function::Fn<(), Output = i32> + core[4a92201981c6b77a]::panic::unwind_safe::RefUnwindSafe + core[4a92201981c6b77a]::marker::Sync, i32>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panic.rs:359:14
[INFO] [stdout]   27:     0x5774b76fdaa7 - std[1209cfb42f6d497f]::rt::lang_start_internal::{closure#0}
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/rt.rs:175:24
[INFO] [stdout]   28:     0x5774b76fdaa7 - std[1209cfb42f6d497f]::panicking::catch_unwind::do_call::<std[1209cfb42f6d497f]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:581:40
[INFO] [stdout]   29:     0x5774b76fdaa7 - std[1209cfb42f6d497f]::panicking::catch_unwind::<isize, std[1209cfb42f6d497f]::rt::lang_start_internal::{closure#0}>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panicking.rs:544:19
[INFO] [stdout]   30:     0x5774b76fdaa7 - std[1209cfb42f6d497f]::panic::catch_unwind::<std[1209cfb42f6d497f]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/panic.rs:359:14
[INFO] [stdout]   31:     0x5774b76fdaa7 - std[1209cfb42f6d497f]::rt::lang_start_internal
[INFO] [stdout]                                at /rustc/f9988fefd3add01f414f52b414308e7872622fee/library/std/src/rt.rs:171:5
[INFO] [stdout]   32:     0x5774b760a3d1 - std[1209cfb42f6d497f]::rt::lang_start::<()>
[INFO] [stdout]   33:     0x5774b760abd5 - main
[INFO] [stdout]   34:     0x7b07d493c1ca - <unknown>
[INFO] [stdout]   35:     0x7b07d493c28b - __libc_start_main
[INFO] [stdout]   36:     0x5774b760a2e5 - _start
[INFO] [stdout]   37:                0x0 - <unknown>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] failures:
[INFO] [stdout]     src/kv.rs - kv::KvStore::get (line 68)
[INFO] [stdout]     src/kv.rs - kv::KvStore::remove (line 102)
[INFO] [stdout]     src/kv.rs - kv::KvStore::set (line 51)
[INFO] [stdout] 
[INFO] [stdout] test result: FAILED. 0 passed; 3 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.95s
[INFO] [stdout] 
[INFO] [stderr] error: doctest failed, to rerun pass `--doc`
[INFO] running `Command { std: "docker" "inspect" "4a8ec0b73f5ea7e46022c681b0dab94bf517464fcf21ccf58cdfa5700628302d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4a8ec0b73f5ea7e46022c681b0dab94bf517464fcf21ccf58cdfa5700628302d", kill_on_drop: false }`
[INFO] [stdout] 4a8ec0b73f5ea7e46022c681b0dab94bf517464fcf21ccf58cdfa5700628302d
