[INFO] updating cached repository ftabaro/mutation-viewer [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/ftabaro/mutation-viewer [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/ftabaro/mutation-viewer" "work/ex/beta-1.37-6/sources/1.36.0/gh/ftabaro/mutation-viewer"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/ftabaro/mutation-viewer'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/ftabaro/mutation-viewer" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ftabaro/mutation-viewer"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ftabaro/mutation-viewer'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 9db01032796d52d9cc56e115b26a234fefce2b0e [INFO] sha for GitHub repo ftabaro/mutation-viewer: 9db01032796d52d9cc56e115b26a234fefce2b0e [INFO] validating manifest of ftabaro/mutation-viewer on toolchain 1.36.0 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of ftabaro/mutation-viewer on toolchain beta-2019-07-23 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing ftabaro/mutation-viewer [INFO] finished frobbing ftabaro/mutation-viewer [INFO] frobbed toml for ftabaro/mutation-viewer written to work/ex/beta-1.37-6/sources/1.36.0/gh/ftabaro/mutation-viewer/Cargo.toml [INFO] started frobbing ftabaro/mutation-viewer [INFO] finished frobbing ftabaro/mutation-viewer [INFO] frobbed toml for ftabaro/mutation-viewer written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/ftabaro/mutation-viewer/Cargo.toml [INFO] crate ftabaro/mutation-viewer already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] testing ftabaro/mutation-viewer against 1.36.0 for beta-1.37-6 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-6/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/ftabaro/mutation-viewer:/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" "+1.36.0" "build" "--frozen"` [INFO] [stdout] eae653278348e445f88692e938ba1addfd73c219351a1e87276ccec49c5da418 [INFO] running `"docker" "start" "-a" "eae653278348e445f88692e938ba1addfd73c219351a1e87276ccec49c5da418"` [INFO] [stderr] Compiling safemem v0.1.1 [INFO] [stderr] Compiling filetime v0.1.15 [INFO] [stderr] Compiling brotli-sys v0.2.1 [INFO] [stderr] Compiling miniz-sys v0.1.10 [INFO] [stderr] Compiling base64 v0.7.0 [INFO] [stderr] Compiling rand v0.3.22 [INFO] [stderr] Compiling twoway v0.1.7 [INFO] [stderr] Compiling threadpool v1.7.1 [INFO] [stderr] Compiling num v0.1.41 [INFO] [stderr] Compiling uuid v0.1.18 [INFO] [stderr] Compiling buf_redux v0.6.1 [INFO] [stderr] Compiling chrono v0.2.25 [INFO] [stderr] Compiling chrono v0.4.0 [INFO] [stderr] Compiling phf_generator v0.7.21 [INFO] [stderr] Compiling tempdir v0.3.6 [INFO] [stderr] Compiling docopt v0.8.3 [INFO] [stderr] Compiling url v0.2.38 [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/crater/target/debug/build/mime_guess-1349934f231f6c99/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:999:5 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x55ca15394003 - std::sys::unix::backtrace::tracing::imp::unwind_backtrace::h6485381528590a55 [INFO] [stderr] at src/libstd/sys/unix/backtrace/tracing/gcc_s.rs:39 [INFO] [stderr] 1: 0x55ca1538fc1b - std::sys_common::backtrace::_print::h49a82ae9552e35c7 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:71 [INFO] [stderr] 2: 0x55ca15392e76 - std::panicking::default_hook::{{closure}}::he20974adbefcc046 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:59 [INFO] [stderr] at src/libstd/panicking.rs:197 [INFO] [stderr] 3: 0x55ca15392c09 - std::panicking::default_hook::he4af6af4ac7fef7b [INFO] [stderr] at src/libstd/panicking.rs:211 [INFO] [stderr] 4: 0x55ca153934cf - std::panicking::rust_panic_with_hook::h057ff03eb4c8000f [INFO] [stderr] at src/libstd/panicking.rs:474 [INFO] [stderr] 5: 0x55ca15393051 - std::panicking::continue_panic_fmt::ha6d6ae144369025b [INFO] [stderr] at src/libstd/panicking.rs:381 [INFO] [stderr] 6: 0x55ca15392f35 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:308 [INFO] [stderr] 7: 0x55ca153a3dac - core::panicking::panic_fmt::hc4f83bfed80aeabd [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 8: 0x55ca15385ef6 - core::result::unwrap_failed::hec71880df7822237 [INFO] [stderr] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/macros.rs:18 [INFO] [stderr] 9: 0x55ca1535134a - core::result::Result::unwrap::h65404b4e4de3be58 [INFO] [stderr] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libcore/result.rs:800 [INFO] [stderr] 10: 0x55ca1535c4e4 - build_script_gen_mime_types::main::h8edb601080bbe329 [INFO] [stderr] at /opt/crater/cargo-home/registry/src/github.com-1ecc6299db9ec823/mime_guess-1.8.3/src/gen_mime_types.rs:22 [INFO] [stderr] 11: 0x55ca1537b38f - std::rt::lang_start::{{closure}}::h160a3c7faf6e8007 [INFO] [stderr] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/rt.rs:64 [INFO] [stderr] 12: 0x55ca15392f22 - std::panicking::try::do_call::hc3d8373a0b215f51 [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] at src/libstd/panicking.rs:293 [INFO] [stderr] 13: 0x55ca15395459 - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:85 [INFO] [stderr] 14: 0x55ca153939dc - std::rt::lang_start_internal::he5218c8b95d395f2 [INFO] [stderr] at src/libstd/panicking.rs:272 [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 15: 0x55ca1537b368 - std::rt::lang_start::h1e6536411e8db891 [INFO] [stderr] at /rustc/a53f9df32fbb0b5f4382caaad8f1a46f36ea887c/src/libstd/rt.rs:64 [INFO] [stderr] 16: 0x55ca1535db29 - main [INFO] [stderr] 17: 0x7fba271112e0 - __libc_start_main [INFO] [stderr] 18: 0x55ca153316f9 - _start [INFO] [stderr] 19: 0x0 - [INFO] [stderr] [INFO] [stderr] warning: build failed, waiting for other jobs to finish... [INFO] [stderr] error: build failed [INFO] running `"docker" "inspect" "eae653278348e445f88692e938ba1addfd73c219351a1e87276ccec49c5da418"` [INFO] running `"docker" "rm" "-f" "eae653278348e445f88692e938ba1addfd73c219351a1e87276ccec49c5da418"` [INFO] [stdout] eae653278348e445f88692e938ba1addfd73c219351a1e87276ccec49c5da418