[INFO] updating cached repository https://github.com/ftabaro/mutation-viewer [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/mnt/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] checking ftabaro/mutation-viewer against master#4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb for pr-64672 [INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fftabaro%2Fmutation-viewer" "work/builds/worker-2/source"` [INFO] [stderr] Cloning into 'work/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/ftabaro/mutation-viewer on toolchain 4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb [INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "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-2/source/Cargo.toml [INFO] crate git repo https://github.com/ftabaro/mutation-viewer already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/cargo-home/bin/cargo" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/mnt/big/crater/work/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/mnt/big/crater/work/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/mnt/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=forbid" "-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" "+4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 03b07d620d95f860dfd0e22340b1767b24dafdb9541ac794f02e5fed6dd746ef [INFO] running `"docker" "start" "-a" "03b07d620d95f860dfd0e22340b1767b24dafdb9541ac794f02e5fed6dd746ef"` [INFO] [stderr] Checking num-traits v0.2.0 [INFO] [stderr] Checking safemem v0.1.1 [INFO] [stderr] Compiling rand v0.4.2 [INFO] [stderr] Checking memchr v2.0.1 [INFO] [stderr] Checking memchr v0.1.11 [INFO] [stderr] Checking filetime v0.1.15 [INFO] [stderr] Compiling miniz-sys v0.1.10 [INFO] [stderr] Compiling brotli-sys v0.2.1 [INFO] [stderr] Checking base64 v0.7.0 [INFO] [stderr] Checking rand v0.3.22 [INFO] [stderr] Checking threadpool v1.7.1 [INFO] [stderr] Checking aho-corasick v0.6.4 [INFO] [stderr] Checking twoway v0.1.7 [INFO] [stderr] Checking buf_redux v0.6.1 [INFO] [stderr] Checking uuid v0.1.18 [INFO] [stderr] Checking remove_dir_all v0.3.0 [INFO] [stderr] Checking term v0.2.14 [INFO] [stderr] Checking tempdir v0.3.6 [INFO] [stderr] Checking url v0.2.38 [INFO] [stderr] Checking num-integer v0.1.36 [INFO] [stderr] Checking num-traits v0.1.43 [INFO] [stderr] Checking regex v0.2.5 [INFO] [stderr] Checking serde_json v1.0.9 [INFO] [stderr] Checking num-iter v0.1.35 [INFO] [stderr] Checking flate2 v0.2.20 [INFO] [stderr] Checking flate2 v1.0.1 [INFO] [stderr] Checking num v0.1.41 [INFO] [stderr] Compiling phf_generator v0.7.21 [INFO] [stderr] Checking chrono v0.2.25 [INFO] [stderr] Checking chrono v0.4.0 [INFO] [stderr] Compiling phf_codegen v0.7.21 [INFO] [stderr] Compiling mime_guess v1.8.3 [INFO] [stderr] Checking docopt v0.8.3 [INFO] [stderr] Checking 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-2f32ffef449a832b/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: 0x563fc3de9e64 - backtrace::backtrace::libunwind::trace::h837858cfeddf7a26 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x563fc3de9e64 - backtrace::backtrace::trace_unsynchronized::hf450b231b66758d5 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x563fc3de9e64 - std::sys_common::backtrace::_print_fmt::h368e3c833d23dd1d [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:76 [INFO] [stderr] 3: 0x563fc3de9e64 - ::fmt::h99a560994a9a8770 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:60 [INFO] [stderr] 4: 0x563fc3e033cc - core::fmt::write::h331a8aee5b7f3512 [INFO] [stderr] at src/libcore/fmt/mod.rs:1030 [INFO] [stderr] 5: 0x563fc3de8677 - std::io::Write::write_fmt::hf05660e3e7df1eca [INFO] [stderr] at src/libstd/io/mod.rs:1412 [INFO] [stderr] 6: 0x563fc3dec1e5 - std::sys_common::backtrace::_print::h2a131efc4c0ac3fa [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:64 [INFO] [stderr] 7: 0x563fc3dec1e5 - std::sys_common::backtrace::print::h983d88dd719c12ff [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stderr] 8: 0x563fc3dec1e5 - std::panicking::default_hook::{{closure}}::h663d5da304a5132f [INFO] [stderr] at src/libstd/panicking.rs:196 [INFO] [stderr] 9: 0x563fc3debed6 - std::panicking::default_hook::hf37841c3986e6801 [INFO] [stderr] at src/libstd/panicking.rs:210 [INFO] [stderr] 10: 0x563fc3dec835 - std::panicking::rust_panic_with_hook::hb2227d83b88686af [INFO] [stderr] at src/libstd/panicking.rs:473 [INFO] [stderr] 11: 0x563fc3dec3d2 - std::panicking::continue_panic_fmt::h8dcb675c0adec47c [INFO] [stderr] at src/libstd/panicking.rs:380 [INFO] [stderr] 12: 0x563fc3dec2c6 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:307 [INFO] [stderr] 13: 0x563fc3e00d9a - core::panicking::panic_fmt::h34237ab75d721bef [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 14: 0x563fc3e00e97 - core::result::unwrap_failed::h73569ff13c30ae81 [INFO] [stderr] at src/libcore/result.rs:1165 [INFO] [stderr] 15: 0x563fc3db24a0 - core::result::Result::unwrap::h58a2df24136ff6fb [INFO] [stderr] at /rustc/4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb/src/libcore/result.rs:933 [INFO] [stderr] 16: 0x563fc3db40e5 - build_script_gen_mime_types::main::h6f736910773753ce [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: 0x563fc3dc4fd0 - std::rt::lang_start::{{closure}}::h24efede63353af48 [INFO] [stderr] at /rustc/4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb/src/libstd/rt.rs:64 [INFO] [stderr] 18: 0x563fc3dec2b3 - std::rt::lang_start_internal::{{closure}}::hcbc0d39047dfb53e [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 19: 0x563fc3dec2b3 - std::panicking::try::do_call::h8b5ef32d822a8d8f [INFO] [stderr] at src/libstd/panicking.rs:292 [INFO] [stderr] 20: 0x563fc3dee1ca - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:80 [INFO] [stderr] 21: 0x563fc3decd2d - std::panicking::try::h9b6fb4e6a40ce0cb [INFO] [stderr] at src/libstd/panicking.rs:271 [INFO] [stderr] 22: 0x563fc3decd2d - std::panic::catch_unwind::h2fbf9b8ead8e504a [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 23: 0x563fc3decd2d - std::rt::lang_start_internal::hb6581c1f21bf501d [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 24: 0x563fc3dc4fa9 - std::rt::lang_start::hd3f34239755023e6 [INFO] [stderr] at /rustc/4ff32c07da9d97e6dc315a4a5c9ffbb797cb27bb/src/libstd/rt.rs:64 [INFO] [stderr] 25: 0x563fc3db566a - main [INFO] [stderr] 26: 0x7f36442c4b97 - __libc_start_main [INFO] [stderr] 27: 0x563fc3d8a9fa - _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" "03b07d620d95f860dfd0e22340b1767b24dafdb9541ac794f02e5fed6dd746ef"` [INFO] running `"docker" "rm" "-f" "03b07d620d95f860dfd0e22340b1767b24dafdb9541ac794f02e5fed6dd746ef"` [INFO] [stdout] 03b07d620d95f860dfd0e22340b1767b24dafdb9541ac794f02e5fed6dd746ef