[INFO] updating cached repository j3h/rust-koans [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/j3h/rust-koans [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/j3h/rust-koans" "work/ex/beta-1.37-6/sources/1.36.0/gh/j3h/rust-koans"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/j3h/rust-koans'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/j3h/rust-koans" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/j3h/rust-koans"` [INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/j3h/rust-koans'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] cc29866cd11b1e11dd61018baddd0f75fe6c3310 [INFO] sha for GitHub repo j3h/rust-koans: cc29866cd11b1e11dd61018baddd0f75fe6c3310 [INFO] validating manifest of j3h/rust-koans 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 j3h/rust-koans 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 j3h/rust-koans [INFO] finished frobbing j3h/rust-koans [INFO] frobbed toml for j3h/rust-koans written to work/ex/beta-1.37-6/sources/1.36.0/gh/j3h/rust-koans/Cargo.toml [INFO] started frobbing j3h/rust-koans [INFO] finished frobbing j3h/rust-koans [INFO] frobbed toml for j3h/rust-koans written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/j3h/rust-koans/Cargo.toml [INFO] crate j3h/rust-koans 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] [stderr] Blocking waiting for file lock on package cache lock [INFO] [stderr] Blocking waiting for file lock on package cache lock [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] testing j3h/rust-koans against beta-2019-07-23 for beta-1.37-6 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-7/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/j3h/rust-koans:/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-2019-07-23" "build" "--frozen"` [INFO] [stdout] ba26184c5ac9d6f531d337f889d6667763f5c5c6687c008f85b328a75aa44858 [INFO] running `"docker" "start" "-a" "ba26184c5ac9d6f531d337f889d6667763f5c5c6687c008f85b328a75aa44858"` [INFO] [stderr] Compiling koans v0.2.2 (/opt/crater/workdir) [INFO] [stderr] error: failed to run custom build command for `koans v0.2.2 (/opt/crater/workdir)` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/crater/target/debug/build/koans-1bac460764b045c8/build-script-build` (exit code: 101) [INFO] [stderr] --- stderr [INFO] [stderr] thread 'main' panicked at 'Read-only file system (os error 30)', build.rs:13:22 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x55710a31a72b - backtrace::backtrace::libunwind::trace::h5dfa5d4c5feed6dc [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x55710a31a72b - backtrace::backtrace::trace_unsynchronized::hb731fe64f3fa469f [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.29/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x55710a31a72b - std::sys_common::backtrace::_print::hf4fd45fe7ae4a250 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x55710a31a72b - std::sys_common::backtrace::print::h31646c3786c57441 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x55710a31a72b - std::panicking::default_hook::{{closure}}::hda785e768c746ae7 [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x55710a31a407 - std::panicking::default_hook::h0c4b76f338614ef1 [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x55710a31adf0 - std::panicking::rust_panic_with_hook::h096dff2cb12b67ce [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x55710a31a972 - std::panicking::continue_panic_fmt::h0046167652be99a6 [INFO] [stderr] at src/libstd/panicking.rs:384 [INFO] [stderr] 8: 0x55710a31a8bf - std::panicking::begin_panic_fmt::he65a2e8ff19d8ae0 [INFO] [stderr] at src/libstd/panicking.rs:339 [INFO] [stderr] 9: 0x55710a312871 - build_script_build::main::had42442dd3582e23 [INFO] [stderr] at /opt/crater/workdir/build.rs:13 [INFO] [stderr] 10: 0x55710a311cc0 - std::rt::lang_start::{{closure}}::h6fcd2a2fa1a0c686 [INFO] [stderr] at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/rt.rs:64 [INFO] [stderr] 11: 0x55710a31a843 - std::rt::lang_start_internal::{{closure}}::h055e1fdc5578d418 [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 12: 0x55710a31a843 - std::panicking::try::do_call::h480cafa68c9928b4 [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 13: 0x55710a31c5ba - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:82 [INFO] [stderr] 14: 0x55710a31b2fd - std::panicking::try::he0549d0299de204a [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 15: 0x55710a31b2fd - std::panic::catch_unwind::h422dc2db98f03517 [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 16: 0x55710a31b2fd - std::rt::lang_start_internal::h121de03325a3f900 [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 17: 0x55710a311c99 - std::rt::lang_start::h457330d5070c76c7 [INFO] [stderr] at /rustc/61d1607e0f6a18bb4897d6f9b10abeac9e11eb8e/src/libstd/rt.rs:64 [INFO] [stderr] 18: 0x55710a312a5a - main [INFO] [stderr] 19: 0x7f9b0f9422e1 - __libc_start_main [INFO] [stderr] 20: 0x55710a310aea - _start [INFO] [stderr] 21: 0x0 - [INFO] [stderr] [INFO] running `"docker" "inspect" "ba26184c5ac9d6f531d337f889d6667763f5c5c6687c008f85b328a75aa44858"` [INFO] running `"docker" "rm" "-f" "ba26184c5ac9d6f531d337f889d6667763f5c5c6687c008f85b328a75aa44858"` [INFO] [stdout] ba26184c5ac9d6f531d337f889d6667763f5c5c6687c008f85b328a75aa44858