[INFO] updating cached repository michaelherger/spotty
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/michaelherger/spotty
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/michaelherger/spotty" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/michaelherger/spotty"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/michaelherger/spotty'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/michaelherger/spotty" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/michaelherger/spotty"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/michaelherger/spotty'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 573aa7fb00016ea8bf898ac8d882ef1467f715ab
[INFO] sha for GitHub repo michaelherger/spotty: 573aa7fb00016ea8bf898ac8d882ef1467f715ab
[INFO] validating manifest of michaelherger/spotty on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of michaelherger/spotty on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing michaelherger/spotty
[INFO] finished frobbing michaelherger/spotty
[INFO] frobbed toml for michaelherger/spotty written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/michaelherger/spotty/Cargo.toml
[INFO] started frobbing michaelherger/spotty
[INFO] finished frobbing michaelherger/spotty
[INFO] frobbed toml for michaelherger/spotty written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/michaelherger/spotty/Cargo.toml
[INFO] crate michaelherger/spotty already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking michaelherger/spotty against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-3/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/michaelherger/spotty:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] d1210da95aa4778a2678c0c06ff4d79b8f23dac0be9b6034961c21d98a684c62
[INFO] running `"docker" "start" "-a" "d1210da95aa4778a2678c0c06ff4d79b8f23dac0be9b6034961c21d98a684c62"`
[INFO] [stderr]     Checking c_linked_list v1.1.1
[INFO] [stderr]    Compiling protobuf v1.7.4
[INFO] [stderr]    Compiling spotty v0.20.0 (/opt/crater/workdir)
[INFO] [stderr]     Checking dns-parser v0.3.2 (https://github.com/plietar/dns-parser#1d3e5a55)
[INFO] [stderr]    Compiling rust-crypto v0.2.36 (https://github.com/awmath/rust-crypto.git?branch=avx2#394c2472)
[INFO] [stderr]    Compiling protobuf v2.4.2
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]    Compiling extprim v1.6.0
[INFO] [stderr]     Checking base64 v0.5.2
[INFO] [stderr]     Checking shannon v0.2.0
[INFO] [stderr]    Compiling vergen v0.1.1
[INFO] [stderr]     Checking get_if_addrs v0.5.3
[INFO] [stderr]     Checking rpassword v0.3.1
[INFO] [stderr] error: failed to run custom build command for `spotty v0.20.0 (/opt/crater/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/spotty-91e202489444e7c7/build-script-build` (exit code: 101)
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: Other, message: "Read-only file system" }', src/libcore/result.rs:1084:5
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55d58d21b0eb - backtrace::backtrace::libunwind::trace::h3a6a6e8afb7ff2de
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x55d58d21b0eb - backtrace::backtrace::trace_unsynchronized::h2220292c79f07c05
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55d58d21b0eb - std::sys_common::backtrace::_print::h8ff1c2c5cb3b84f7
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x55d58d21b0eb - std::sys_common::backtrace::print::h2254c58d69a73304
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x55d58d21b0eb - std::panicking::default_hook::{{closure}}::hc21cbd062363cef6
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x55d58d21adc6 - std::panicking::default_hook::hfea076cda52c2914
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x55d58d21b7ad - std::panicking::rust_panic_with_hook::h746830f9f479e849
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x55d58d21b332 - std::panicking::continue_panic_fmt::h37fa2235c2440555
[INFO] [stderr]                                at src/libstd/panicking.rs:384
[INFO] [stderr]    8:     0x55d58d21b216 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:311
[INFO] [stderr]    9:     0x55d58d22fd8d - core::panicking::panic_fmt::hc32305cc7ba59cf9
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]   10:     0x55d58d22fe87 - core::result::unwrap_failed::h11b2f6982d0c0006
[INFO] [stderr]                                at src/libcore/result.rs:1084
[INFO] [stderr]   11:     0x55d58d213d70 - core::result::Result<T,E>::unwrap::h71616ab0878c7c58
[INFO] [stderr]                                at /rustc/266783e4e09e4e9d5307c1c8e695659c58bbcac7/src/libcore/result.rs:852
[INFO] [stderr]   12:     0x55d58d213b81 - build_script_build::main::hdd5d4e202d90f179
[INFO] [stderr]                                at /opt/crater/workdir/build.rs:12
[INFO] [stderr]   13:     0x55d58d2127d0 - std::rt::lang_start::{{closure}}::h398a732fc989c6ce
[INFO] [stderr]                                at /rustc/266783e4e09e4e9d5307c1c8e695659c58bbcac7/src/libstd/rt.rs:64
[INFO] [stderr]   14:     0x55d58d21b203 - std::rt::lang_start_internal::{{closure}}::h14c5bec2472d54ad
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   15:     0x55d58d21b203 - std::panicking::try::do_call::h88f516924fc6a288
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   16:     0x55d58d21d48a - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:80
[INFO] [stderr]   17:     0x55d58d21bcbd - std::panicking::try::ha613ca8bf0a1302a
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   18:     0x55d58d21bcbd - std::panic::catch_unwind::h68d4ca98047bc7c5
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   19:     0x55d58d21bcbd - std::rt::lang_start_internal::h600c3ba1b556e68a
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   20:     0x55d58d2127a9 - std::rt::lang_start::h0131ef3eae0715e2
[INFO] [stderr]                                at /rustc/266783e4e09e4e9d5307c1c8e695659c58bbcac7/src/libstd/rt.rs:64
[INFO] [stderr]   21:     0x55d58d213cda - main
[INFO] [stderr]   22:     0x7f49668912e1 - __libc_start_main
[INFO] [stderr]   23:     0x55d58d211eaa - _start
[INFO] [stderr]   24:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "d1210da95aa4778a2678c0c06ff4d79b8f23dac0be9b6034961c21d98a684c62"`
[INFO] running `"docker" "rm" "-f" "d1210da95aa4778a2678c0c06ff4d79b8f23dac0be9b6034961c21d98a684c62"`
[INFO] [stdout] d1210da95aa4778a2678c0c06ff4d79b8f23dac0be9b6034961c21d98a684c62