[INFO] updating cached repository https://github.com/ftabaro/mutation-viewer [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/big/crater/work/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune"` [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 9db01032796d52d9cc56e115b26a234fefce2b0e [INFO] testing ftabaro/mutation-viewer against beta-2019-09-28 for beta-1.39-1 [INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fftabaro%2Fmutation-viewer" "work/builds/worker-6/source"` [INFO] [stderr] Cloning into 'work/builds/worker-6/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ftabaro/mutation-viewer on toolchain beta-2019-09-28 [INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/ftabaro/mutation-viewer [INFO] finished tweaking git repo https://github.com/ftabaro/mutation-viewer [INFO] tweaked toml for git repo https://github.com/ftabaro/mutation-viewer written to work/builds/worker-6/source/Cargo.toml [INFO] crate git repo https://github.com/ftabaro/mutation-viewer already has a lockfile, it will not be regenerated [INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+beta-2019-09-28" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/big/crater/work/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2019-09-28" "build" "--frozen"` [INFO] [stdout] 851b0d4fb7ca82cab64646ccb9111c0c0232245f83878d4f554093499f1a44f6 [INFO] running `"docker" "start" "-a" "851b0d4fb7ca82cab64646ccb9111c0c0232245f83878d4f554093499f1a44f6"` [INFO] [stderr] Compiling libc v0.2.36 [INFO] [stderr] Compiling version_check v0.1.3 [INFO] [stderr] Compiling siphasher v0.2.2 [INFO] [stderr] Compiling num-traits v0.2.0 [INFO] [stderr] Compiling cfg-if v0.1.2 [INFO] [stderr] Compiling cc v1.0.4 [INFO] [stderr] Compiling matches v0.1.6 [INFO] [stderr] Compiling gcc v0.3.54 [INFO] [stderr] Compiling serde v1.0.27 [INFO] [stderr] Compiling safemem v0.2.0 [INFO] [stderr] Compiling lazy_static v1.0.0 [INFO] [stderr] Compiling unicode-normalization v0.1.5 [INFO] [stderr] Compiling safemem v0.1.1 [INFO] [stderr] Compiling ascii v0.7.1 [INFO] [stderr] Compiling regex-syntax v0.4.2 [INFO] [stderr] Compiling byteorder v1.2.1 [INFO] [stderr] Compiling chunked_transfer v0.3.1 [INFO] [stderr] Compiling itoa v0.3.4 [INFO] [stderr] Compiling httparse v1.2.4 [INFO] [stderr] Compiling sha1 v0.2.0 [INFO] [stderr] Compiling strsim v0.6.0 [INFO] [stderr] Compiling log v0.4.1 [INFO] [stderr] Compiling unicode-bidi v0.3.4 [INFO] [stderr] Compiling thread_local v0.3.5 [INFO] [stderr] Compiling base64 v0.7.0 [INFO] [stderr] Compiling serde_derive_internals v0.19.0 [INFO] [stderr] Compiling remove_dir_all v0.3.0 [INFO] [stderr] Compiling term v0.2.14 [INFO] [stderr] Compiling log v0.3.9 [INFO] [stderr] Compiling rand v0.4.2 [INFO] [stderr] Compiling memchr v2.0.1 [INFO] [stderr] Compiling time v0.1.39 [INFO] [stderr] Compiling memchr v0.1.11 [INFO] [stderr] Compiling num_cpus v1.8.0 [INFO] [stderr] Compiling filetime v0.1.15 [INFO] [stderr] Compiling num-traits v0.1.43 [INFO] [stderr] Compiling num-integer v0.1.36 [INFO] [stderr] Compiling idna v0.1.4 [INFO] [stderr] Compiling mime v0.2.6 [INFO] [stderr] Compiling unicase v1.4.2 [INFO] [stderr] Compiling twoway v0.1.7 [INFO] [stderr] Compiling aho-corasick v0.6.4 [INFO] [stderr] Compiling buf_redux v0.6.1 [INFO] [stderr] Compiling threadpool v1.7.1 [INFO] [stderr] Compiling num-iter v0.1.35 [INFO] [stderr] Compiling rand v0.3.22 [INFO] [stderr] Compiling tempdir v0.3.6 [INFO] [stderr] Compiling regex v0.2.5 [INFO] [stderr] Compiling num v0.1.41 [INFO] [stderr] Compiling uuid v0.1.18 [INFO] [stderr] Compiling miniz-sys v0.1.10 [INFO] [stderr] Compiling chrono v0.2.25 [INFO] [stderr] Compiling chrono v0.4.0 [INFO] [stderr] Compiling phf_shared v0.7.21 [INFO] [stderr] Compiling url v1.6.0 [INFO] [stderr] Compiling brotli-sys v0.2.1 [INFO] [stderr] Compiling url v0.2.38 [INFO] [stderr] Compiling phf_generator v0.7.21 [INFO] [stderr] Compiling phf v0.7.21 [INFO] [stderr] Compiling serde_derive v1.0.27 [INFO] [stderr] Compiling phf_codegen v0.7.21 [INFO] [stderr] Compiling mime_guess v1.8.3 [INFO] [stderr] Compiling flate2 v0.2.20 [INFO] [stderr] Compiling flate2 v1.0.1 [INFO] [stderr] Compiling tiny_http v0.5.9 [INFO] [stderr] error: failed to run custom build command for `mime_guess v1.8.3` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/target/debug/build/mime_guess-16391c930743ce09/build-script-gen_mime_types` (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:1165:5 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x559df9d8d514 - backtrace::backtrace::libunwind::trace::hf625d18232cbbbd4 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x559df9d8d514 - backtrace::backtrace::trace_unsynchronized::h41d74150fc6ff542 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x559df9d8d514 - std::sys_common::backtrace::_print_fmt::h85d37830c667a1f9 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:76 [INFO] [stderr] 3: 0x559df9d8d514 - ::fmt::h2b7ac01d5feaf9b2 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:60 [INFO] [stderr] 4: 0x559df9da6a7c - core::fmt::write::h7fd0d904495c035f [INFO] [stderr] at src/libcore/fmt/mod.rs:1030 [INFO] [stderr] 5: 0x559df9d8bd27 - std::io::Write::write_fmt::h663e4bf63637c947 [INFO] [stderr] at src/libstd/io/mod.rs:1412 [INFO] [stderr] 6: 0x559df9d8f895 - std::sys_common::backtrace::_print::h4c743f7c274a5a74 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:64 [INFO] [stderr] 7: 0x559df9d8f895 - std::sys_common::backtrace::print::ha5c4f4bf03800d4d [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stderr] 8: 0x559df9d8f895 - std::panicking::default_hook::{{closure}}::h8b842185774c09e6 [INFO] [stderr] at src/libstd/panicking.rs:196 [INFO] [stderr] 9: 0x559df9d8f586 - std::panicking::default_hook::hd8ec13ee1bc2a65a [INFO] [stderr] at src/libstd/panicking.rs:210 [INFO] [stderr] 10: 0x559df9d8fee5 - std::panicking::rust_panic_with_hook::hf3b27166e5f403e7 [INFO] [stderr] at src/libstd/panicking.rs:473 [INFO] [stderr] 11: 0x559df9d8fa82 - std::panicking::continue_panic_fmt::hd961751be84a6f83 [INFO] [stderr] at src/libstd/panicking.rs:380 [INFO] [stderr] 12: 0x559df9d8f976 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:307 [INFO] [stderr] 13: 0x559df9da444a - core::panicking::panic_fmt::h467e0364f9237670 [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 14: 0x559df9da4547 - core::result::unwrap_failed::h38f3a56f1dadf080 [INFO] [stderr] at src/libcore/result.rs:1165 [INFO] [stderr] 15: 0x559df9d55580 - core::result::Result::unwrap::h48fe0486e4bc4d99 [INFO] [stderr] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libcore/result.rs:933 [INFO] [stderr] 16: 0x559df9d57295 - build_script_gen_mime_types::main::h8a25f11102899db7 [INFO] [stderr] at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-1.8.3/src/gen_mime_types.rs:22 [INFO] [stderr] 17: 0x559df9d68180 - std::rt::lang_start::{{closure}}::h17aa65aecdbafd37 [INFO] [stderr] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/rt.rs:64 [INFO] [stderr] 18: 0x559df9d8f963 - std::rt::lang_start_internal::{{closure}}::hf85bf15597d76295 [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 19: 0x559df9d8f963 - std::panicking::try::do_call::hd308ec0604b9bc21 [INFO] [stderr] at src/libstd/panicking.rs:292 [INFO] [stderr] 20: 0x559df9d9187a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:80 [INFO] [stderr] 21: 0x559df9d903dd - std::panicking::try::hafc45125a5bd2b22 [INFO] [stderr] at src/libstd/panicking.rs:271 [INFO] [stderr] 22: 0x559df9d903dd - std::panic::catch_unwind::h8494678ec44c4b51 [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 23: 0x559df9d903dd - std::rt::lang_start_internal::h7404667a595739f8 [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 24: 0x559df9d68159 - std::rt::lang_start::h176fa706a628044a [INFO] [stderr] at /rustc/5752b6348ee6971573b278c315a02193c847ee32/src/libstd/rt.rs:64 [INFO] [stderr] 25: 0x559df9d5881a - main [INFO] [stderr] 26: 0x7efca9bcdb97 - __libc_start_main [INFO] [stderr] 27: 0x559df9d2dbaa - _start [INFO] [stderr] 28: 0x0 - [INFO] [stderr] [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "851b0d4fb7ca82cab64646ccb9111c0c0232245f83878d4f554093499f1a44f6"` [INFO] running `"docker" "rm" "-f" "851b0d4fb7ca82cab64646ccb9111c0c0232245f83878d4f554093499f1a44f6"` [INFO] [stdout] 851b0d4fb7ca82cab64646ccb9111c0c0232245f83878d4f554093499f1a44f6