[INFO] updating cached repository almindor/buzz
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/almindor/buzz
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/almindor/buzz" "work/ex/beta-1.38-1/sources/1.37.0/gh/almindor/buzz"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/almindor/buzz'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/almindor/buzz" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/almindor/buzz"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/almindor/buzz'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 536f360dbf617e346986f20e4f1dce0cb651bf01
[INFO] sha for GitHub repo almindor/buzz: 536f360dbf617e346986f20e4f1dce0cb651bf01
[INFO] validating manifest of almindor/buzz on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of almindor/buzz on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing almindor/buzz
[INFO] finished frobbing almindor/buzz
[INFO] frobbed toml for almindor/buzz written to work/ex/beta-1.38-1/sources/1.37.0/gh/almindor/buzz/Cargo.toml
[INFO] started frobbing almindor/buzz
[INFO] finished frobbing almindor/buzz
[INFO] frobbed toml for almindor/buzz written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/almindor/buzz/Cargo.toml
[INFO] crate almindor/buzz already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing almindor/buzz against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/almindor/buzz:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] bd9cf8a3fb4787bc165c79c4fa4f5993ca01cc3e82cc0efc2681a570c512680d
[INFO] running `"docker" "start" "-a" "bd9cf8a3fb4787bc165c79c4fa4f5993ca01cc3e82cc0efc2681a570c512680d"`
[INFO] [stderr]    Compiling arrayvec v0.4.10
[INFO] [stderr]    Compiling syn v0.15.36
[INFO] [stderr]    Compiling libc v0.2.58
[INFO] [stderr]    Compiling xml-rs v0.8.0
[INFO] [stderr]    Compiling nix v0.14.1
[INFO] [stderr]    Compiling rayon-core v1.5.0
[INFO] [stderr]    Compiling num-derive v0.2.5
[INFO] [stderr]    Compiling linked-hash-map v0.5.2
[INFO] [stderr]    Compiling downcast-rs v1.0.4
[INFO] [stderr]    Compiling either v1.5.2
[INFO] [stderr]    Compiling ryu v0.2.8
[INFO] [stderr]    Compiling xdg v2.2.0
[INFO] [stderr]    Compiling color_quant v1.0.1
[INFO] [stderr]    Compiling itoa v0.4.4
[INFO] [stderr]    Compiling regex v1.1.7
[INFO] [stderr]    Compiling atom v0.3.5
[INFO] [stderr]    Compiling utf8-ranges v1.0.3
[INFO] [stderr]    Compiling colorful v0.2.1
[INFO] [stderr]    Compiling nonzero_signed v1.0.3
[INFO] [stderr]    Compiling libm v0.1.4
[INFO] [stderr]    Compiling futures v0.1.27
[INFO] [stderr]    Compiling mopa v0.2.2
[INFO] [stderr]    Compiling termcolor v1.0.5
[INFO] [stderr]    Compiling shrev v1.1.1
[INFO] [stderr]    Compiling build_const v0.2.1
[INFO] [stderr]    Compiling static_assertions v0.2.5
[INFO] [stderr]    Compiling tuple_utils v0.2.0
[INFO] [stderr]    Compiling foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling mint v0.5.1
[INFO] [stderr]    Compiling openssl v0.10.23
[INFO] [stderr]    Compiling edit-distance v2.1.0
[INFO] [stderr]    Compiling native-tls v0.2.3
[INFO] [stderr]    Compiling crc32fast v1.2.0
[INFO] [stderr]    Compiling cgmath v0.16.1
[INFO] [stderr]    Compiling winapi v0.3.7
[INFO] [stderr]    Compiling try-lock v0.2.2
[INFO] [stderr]    Compiling openssl-probe v0.1.2
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling hound v3.4.0
[INFO] [stderr]    Compiling rgb v0.8.13
[INFO] [stderr]    Compiling objekt v0.1.2
[INFO] [stderr]    Compiling xi-unicode v0.1.0
[INFO] [stderr]    Compiling claxon v0.4.2
[INFO] [stderr]    Compiling dtoa v0.4.4
[INFO] [stderr]    Compiling hashbrown v0.5.0
[INFO] [stderr]    Compiling fluent-locale v0.4.1
[INFO] [stderr]    Compiling static_assertions v0.3.3
[INFO] [stderr]    Compiling float-ord v0.2.0
[INFO] [stderr]    Compiling httpdate v0.3.2
[INFO] [stderr]    Compiling unicode-segmentation v1.3.0
[INFO] [stderr]    Compiling libloading v0.5.1
[INFO] [stderr]    Compiling num-traits v0.2.8
[INFO] [stderr]    Compiling num-integer v0.1.41
[INFO] [stderr]    Compiling num-iter v0.1.39
[INFO] [stderr]    Compiling num-rational v0.2.2
[INFO] [stderr]    Compiling num-complex v0.2.3
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]    Compiling cmake v0.1.40
[INFO] [stderr]    Compiling minimp3-sys v0.3.1
[INFO] [stderr]    Compiling proc-macro2 v0.3.8
[INFO] [stderr]    Compiling miniz_oxide_c_api v0.2.1
[INFO] [stderr]    Compiling tokio-trace-core v0.2.0
[INFO] [stderr]    Compiling crossbeam-utils v0.6.5
[INFO] [stderr]    Compiling try_from v0.3.2
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling rand_core v0.3.1
[INFO] [stderr]    Compiling miniz_oxide v0.2.1
[INFO] [stderr]    Compiling walkdir v2.2.8
[INFO] [stderr]    Compiling x11 v2.18.1
[INFO] [stderr]    Compiling openssl-sys v0.9.47
[INFO] [stderr]    Compiling alsa-sys v0.1.2
[INFO] [stderr]    Compiling servo-fontconfig-sys v4.0.7
[INFO] [stderr]    Compiling itertools v0.7.11
[INFO] [stderr]    Compiling error-chain v0.12.1
[INFO] [stderr]    Compiling unicase v2.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.7
[INFO] [stderr]    Compiling gif v0.10.2
[INFO] [stderr]    Compiling humantime v1.2.0
[INFO] [stderr]    Compiling matrixmultiply v0.2.2
[INFO] [stderr]    Compiling foreign-types v0.3.2
[INFO] [stderr]    Compiling crc v1.8.1
[INFO] [stderr]    Compiling annotate-snippets v0.1.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling tokio-sync v0.1.6
[INFO] [stderr]    Compiling stackvector v1.0.2
[INFO] [stderr]    Compiling rand_xorshift v0.1.1
[INFO] [stderr]    Compiling rand_hc v0.1.0
[INFO] [stderr]    Compiling rand_isaac v0.1.1
[INFO] [stderr]    Compiling quote v0.5.2
[INFO] [stderr]    Compiling servo-freetype-sys v4.0.5
[INFO] [stderr]    Compiling expat-sys v2.1.6
[INFO] [stderr]    Compiling crossbeam-queue v0.1.2
[INFO] [stderr]    Compiling tokio-executor v0.1.7
[INFO] [stderr]    Compiling rand_chacha v0.1.1
[INFO] [stderr]    Compiling fluent-syntax v0.1.1
[INFO] [stderr]    Compiling rustc-hash v1.0.1
[INFO] [stderr]    Compiling stb_truetype v0.2.6
[INFO] [stderr]    Compiling fxhash v0.2.1
[INFO] [stderr]    Compiling base64 v0.10.1
[INFO] [stderr]    Compiling ogg v0.7.0
[INFO] [stderr]    Compiling err-derive v0.1.5
[INFO] [stderr]    Compiling im v12.3.4
[INFO] [stderr]    Compiling sentry v0.15.5
[INFO] [stderr]    Compiling rustc_version_runtime v0.1.5
[INFO] [stderr]    Compiling syn v0.13.11
[INFO] [stderr]    Compiling aho-corasick v0.7.3
[INFO] [stderr]    Compiling sized-chunks v0.1.3
[INFO] [stderr]    Compiling tokio-current-thread v0.1.6
[INFO] [stderr]    Compiling tokio-timer v0.2.11
[INFO] [stderr]    Compiling wayland-scanner v0.21.13
[INFO] [stderr]    Compiling syn v0.14.9
[INFO] [stderr]    Compiling lexical-core v0.4.0
[INFO] [stderr]    Compiling dlib v0.4.1
[INFO] [stderr]    Compiling num_cpus v1.10.1
[INFO] [stderr]    Compiling rand_os v0.1.3
[INFO] [stderr]    Compiling backtrace-sys v0.1.28
[INFO] [stderr]    Compiling memmap v0.7.0
[INFO] [stderr]    Compiling shared_library v0.1.9
[INFO] [stderr]    Compiling x11-dl v2.18.3
[INFO] [stderr]    Compiling rand v0.5.6
[INFO] [stderr]    Compiling time v0.1.42
[INFO] [stderr]    Compiling iovec v0.1.2
[INFO] [stderr]    Compiling atty v0.2.11
[INFO] [stderr]    Compiling net2 v0.2.33
[INFO] [stderr]    Compiling slice-deque v0.2.4
[INFO] [stderr]    Compiling rand v0.4.6
[INFO] [stderr]    Compiling memmap v0.6.2
[INFO] [stderr]    Compiling dirs v1.0.5
[INFO] [stderr]    Compiling uname v0.1.1
[INFO] [stderr]    Compiling hostname v0.1.5
[INFO] [stderr]    Compiling xcb v0.8.2
[INFO] [stderr]    Compiling crossbeam-epoch v0.7.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.6.1
[INFO] [stderr]    Compiling crossbeam-epoch v0.5.2
[INFO] [stderr]    Compiling phf_shared v0.7.24
[INFO] [stderr] error: failed to run custom build command for `rustc_version_runtime v0.1.5`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/crater/target/debug/build/rustc_version_runtime-1e2c66c36e0199cf/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:     0x55d384210edb - backtrace::backtrace::libunwind::trace::h23ae608c8b906c69
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x55d384210edb - backtrace::backtrace::trace_unsynchronized::h65b3ea295a85fd48
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55d384210edb - std::sys_common::backtrace::_print::h24f527b44b6cfc06
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:47
[INFO] [stderr]    3:     0x55d384210edb - std::sys_common::backtrace::print::h712608e4347fd64a
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:36
[INFO] [stderr]    4:     0x55d384210edb - std::panicking::default_hook::{{closure}}::h6c3d570c2b500048
[INFO] [stderr]                                at src/libstd/panicking.rs:200
[INFO] [stderr]    5:     0x55d384210bb6 - std::panicking::default_hook::hb29963fb4747e0dd
[INFO] [stderr]                                at src/libstd/panicking.rs:214
[INFO] [stderr]    6:     0x55d38421159d - std::panicking::rust_panic_with_hook::hd1236c3083de823a
[INFO] [stderr]                                at src/libstd/panicking.rs:477
[INFO] [stderr]    7:     0x55d384211122 - std::panicking::continue_panic_fmt::he38ad41d6304a12c
[INFO] [stderr]                                at src/libstd/panicking.rs:384
[INFO] [stderr]    8:     0x55d384211006 - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:311
[INFO] [stderr]    9:     0x55d38422a5ad - core::panicking::panic_fmt::h1bc6de43c92ad80c
[INFO] [stderr]                                at src/libcore/panicking.rs:85
[INFO] [stderr]   10:     0x55d38422a6a7 - core::result::unwrap_failed::hd83f272814becce6
[INFO] [stderr]                                at src/libcore/result.rs:1084
[INFO] [stderr]   11:     0x55d3841e1d60 - core::result::Result<T,E>::unwrap::h46886b695c0873db
[INFO] [stderr]                                at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libcore/result.rs:852
[INFO] [stderr]   12:     0x55d3841de5db - build_script_build::main::h49b4003bdd6c352b
[INFO] [stderr]                                at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/rustc_version_runtime-0.1.5/build.rs:27
[INFO] [stderr]   13:     0x55d3841dfd70 - std::rt::lang_start::{{closure}}::h653ec801f246f429
[INFO] [stderr]                                at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libstd/rt.rs:64
[INFO] [stderr]   14:     0x55d384210ff3 - std::rt::lang_start_internal::{{closure}}::hf367a5a6ae52b0ce
[INFO] [stderr]                                at src/libstd/rt.rs:49
[INFO] [stderr]   15:     0x55d384210ff3 - std::panicking::try::do_call::h9d779bc5e27e3284
[INFO] [stderr]                                at src/libstd/panicking.rs:296
[INFO] [stderr]   16:     0x55d3842175da - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:80
[INFO] [stderr]   17:     0x55d384211aad - std::panicking::try::h4af22d9cb0afa351
[INFO] [stderr]                                at src/libstd/panicking.rs:275
[INFO] [stderr]   18:     0x55d384211aad - std::panic::catch_unwind::hbb68a9ada87bfb97
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   19:     0x55d384211aad - std::rt::lang_start_internal::hba9e09d74440ce4d
[INFO] [stderr]                                at src/libstd/rt.rs:48
[INFO] [stderr]   20:     0x55d3841dfd49 - std::rt::lang_start::h2666b4cbcc2d1f21
[INFO] [stderr]                                at /rustc/e450539c2a8d7f791268d699cbe45ab3e57d43a1/src/libstd/rt.rs:64
[INFO] [stderr]   21:     0x55d3841df5ba - main
[INFO] [stderr]   22:     0x7ff6ebae12e1 - __libc_start_main
[INFO] [stderr]   23:     0x55d3841ddf8a - _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" "bd9cf8a3fb4787bc165c79c4fa4f5993ca01cc3e82cc0efc2681a570c512680d"`
[INFO] running `"docker" "rm" "-f" "bd9cf8a3fb4787bc165c79c4fa4f5993ca01cc3e82cc0efc2681a570c512680d"`
[INFO] [stdout] bd9cf8a3fb4787bc165c79c4fa4f5993ca01cc3e82cc0efc2681a570c512680d