[INFO] updating cached repository hoyley/koans-rust [INFO] running `"git" "fetch" "--all"` [INFO] [stdout] Fetching origin [INFO] [stderr] From git://github.com/hoyley/koans-rust [INFO] [stderr] * branch HEAD -> FETCH_HEAD [INFO] running `"git" "clone" "work/cache/sources/gh/hoyley/koans-rust" "work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/hoyley/koans-rust"` [INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/hoyley/koans-rust'... [INFO] [stderr] done. [INFO] running `"git" "clone" "work/cache/sources/gh/hoyley/koans-rust" "work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/hoyley/koans-rust"` [INFO] [stderr] Cloning into 'work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/hoyley/koans-rust'... [INFO] [stderr] done. [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] 1a10ea949df9397eccea9049e03ea8e6ae3cd69e [INFO] sha for GitHub repo hoyley/koans-rust: 1a10ea949df9397eccea9049e03ea8e6ae3cd69e [INFO] validating manifest of hoyley/koans-rust on toolchain master#c43d03a19f326f4a323569328cc501e86eb6d22e [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] validating manifest of hoyley/koans-rust on toolchain try#75eff020d0923c035c2fe220db4a0465cd847048 [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started frobbing hoyley/koans-rust [INFO] finished frobbing hoyley/koans-rust [INFO] frobbed toml for hoyley/koans-rust written to work/ex/pr-63565/sources/master#c43d03a19f326f4a323569328cc501e86eb6d22e/gh/hoyley/koans-rust/Cargo.toml [INFO] started frobbing hoyley/koans-rust [INFO] finished frobbing hoyley/koans-rust [INFO] frobbed toml for hoyley/koans-rust written to work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/hoyley/koans-rust/Cargo.toml [INFO] crate hoyley/koans-rust already has a lockfile, it will not be regenerated [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c43d03a19f326f4a323569328cc501e86eb6d22e-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] checking hoyley/koans-rust against try#75eff020d0923c035c2fe220db4a0465cd847048 for pr-63565 [INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63565/worker-7/try#75eff020d0923c035c2fe220db4a0465cd847048:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63565/sources/try#75eff020d0923c035c2fe220db4a0465cd847048/gh/hoyley/koans-rust:/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=forbid" "-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" "+75eff020d0923c035c2fe220db4a0465cd847048-alt" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 7c094aaaf8eb34f3caf1c101233ae44588149b220b0137099de07828f4ea0e85 [INFO] running `"docker" "start" "-a" "7c094aaaf8eb34f3caf1c101233ae44588149b220b0137099de07828f4ea0e85"` [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-713b88ae750c92c9/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: 0x563a004162db - backtrace::backtrace::libunwind::trace::h223ecf9e25ea61ed [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x563a004162db - backtrace::backtrace::trace_unsynchronized::h19c402a6233e597e [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x563a004162db - std::sys_common::backtrace::_print::h14947081e8315ba5 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x563a004162db - std::sys_common::backtrace::print::h87cad3f0b50b59c5 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x563a004162db - std::panicking::default_hook::{{closure}}::h497a714df189bd9d [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x563a00415fb6 - std::panicking::default_hook::h8dc4a117b759bd96 [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x563a0041699d - std::panicking::rust_panic_with_hook::h4cbf0f096b75f262 [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x563a00416522 - std::panicking::continue_panic_fmt::hbfbfc57925685348 [INFO] [stderr] at src/libstd/panicking.rs:384 [INFO] [stderr] 8: 0x563a0041646f - std::panicking::begin_panic_fmt::h01a8d43d7dd3d271 [INFO] [stderr] at src/libstd/panicking.rs:339 [INFO] [stderr] 9: 0x563a0040ea76 - build_script_build::main::h3b003427cac08481 [INFO] [stderr] at /opt/crater/workdir/build.rs:13 [INFO] [stderr] 10: 0x563a0040dff0 - std::rt::lang_start::{{closure}}::he3ae8faa7207d836 [INFO] [stderr] at /rustc/75eff020d0923c035c2fe220db4a0465cd847048/src/libstd/rt.rs:64 [INFO] [stderr] 11: 0x563a004163f3 - std::rt::lang_start_internal::{{closure}}::hb2a68345cd4d50f8 [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 12: 0x563a004163f3 - std::panicking::try::do_call::ha4d88255f4a68d08 [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 13: 0x563a004184ba - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:80 [INFO] [stderr] 14: 0x563a00416ead - std::panicking::try::h6debac9988c5415d [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 15: 0x563a00416ead - std::panic::catch_unwind::h4659dbf6316a9c8d [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 16: 0x563a00416ead - std::rt::lang_start_internal::hdadab8536edf34fe [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 17: 0x563a0040dfc9 - std::rt::lang_start::hee348b39cef883f8 [INFO] [stderr] at /rustc/75eff020d0923c035c2fe220db4a0465cd847048/src/libstd/rt.rs:64 [INFO] [stderr] 18: 0x563a0040ec5a - main [INFO] [stderr] 19: 0x7f0a07ec82e1 - __libc_start_main [INFO] [stderr] 20: 0x563a0040ccda - _start [INFO] [stderr] 21: 0x0 - [INFO] [stderr] [INFO] running `"docker" "inspect" "7c094aaaf8eb34f3caf1c101233ae44588149b220b0137099de07828f4ea0e85"` [INFO] running `"docker" "rm" "-f" "7c094aaaf8eb34f3caf1c101233ae44588149b220b0137099de07828f4ea0e85"` [INFO] [stdout] 7c094aaaf8eb34f3caf1c101233ae44588149b220b0137099de07828f4ea0e85