[INFO] updating cached repository https://github.com/bitcartel/rust-koans-solutions [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] fa1cc79b191627ba13abd5c639ffff97f6c9e08a [INFO] testing bitcartel/rust-koans-solutions against 1.38.0 for beta-1.39-1 [INFO] running `"git" "clone" "work/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbitcartel%2Frust-koans-solutions" "work/builds/worker-3/source"` [INFO] [stderr] Cloning into 'work/builds/worker-3/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/bitcartel/rust-koans-solutions on toolchain 1.38.0 [INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/bitcartel/rust-koans-solutions [INFO] finished tweaking git repo https://github.com/bitcartel/rust-koans-solutions [INFO] tweaked toml for git repo https://github.com/bitcartel/rust-koans-solutions written to work/builds/worker-3/source/Cargo.toml [INFO] crate git repo https://github.com/bitcartel/rust-koans-solutions already has a lockfile, it will not be regenerated [INFO] running `"/big/crater/work/cargo-home/bin/cargo" "+1.38.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/big/crater/work/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/big/crater/work/builds/worker-3/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" "+1.38.0" "build" "--frozen"` [INFO] [stdout] a1567b84cebb07f3c9c644e5d781889913c4c9f097f489bd1ffc752f42b8b70c [INFO] running `"docker" "start" "-a" "a1567b84cebb07f3c9c644e5d781889913c4c9f097f489bd1ffc752f42b8b70c"` [INFO] [stderr] Compiling koans v0.2.2 (/opt/rustwide/workdir) [INFO] [stderr] error: failed to run custom build command for `koans v0.2.2 (/opt/rustwide/workdir)` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/target/debug/build/koans-4c4f479cb7107fdf/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: 0x55572275d8eb - backtrace::backtrace::libunwind::trace::h89fcc71e59e3bc5b [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x55572275d8eb - backtrace::backtrace::trace_unsynchronized::h0bad9be1379e729a [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.34/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x55572275d8eb - std::sys_common::backtrace::_print::hd3382a1f33c473da [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:47 [INFO] [stderr] 3: 0x55572275d8eb - std::sys_common::backtrace::print::h0ec6f03cfb8e76a6 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:36 [INFO] [stderr] 4: 0x55572275d8eb - std::panicking::default_hook::{{closure}}::h96cbf7b454e3f557 [INFO] [stderr] at src/libstd/panicking.rs:200 [INFO] [stderr] 5: 0x55572275d5c6 - std::panicking::default_hook::h95a8f00337383d83 [INFO] [stderr] at src/libstd/panicking.rs:214 [INFO] [stderr] 6: 0x55572275dfad - std::panicking::rust_panic_with_hook::h92f98b46e22f14ed [INFO] [stderr] at src/libstd/panicking.rs:477 [INFO] [stderr] 7: 0x55572275db32 - std::panicking::continue_panic_fmt::h25abfbb4e5b7043a [INFO] [stderr] at src/libstd/panicking.rs:384 [INFO] [stderr] 8: 0x55572275da7f - std::panicking::begin_panic_fmt::hc33ce01c7f7cd52d [INFO] [stderr] at src/libstd/panicking.rs:339 [INFO] [stderr] 9: 0x555722755ea6 - build_script_build::main::hede185aa1bcebf8c [INFO] [stderr] at /opt/rustwide/workdir/build.rs:13 [INFO] [stderr] 10: 0x555722755420 - std::rt::lang_start::{{closure}}::h6df81cec8e3ff57a [INFO] [stderr] at /rustc/625451e376bb2e5283fc4741caa0a3e8a2ca4d54/src/libstd/rt.rs:64 [INFO] [stderr] 11: 0x55572275da03 - std::rt::lang_start_internal::{{closure}}::h4e93c1949c7a1955 [INFO] [stderr] at src/libstd/rt.rs:49 [INFO] [stderr] 12: 0x55572275da03 - std::panicking::try::do_call::h9440ccd4dc467eaa [INFO] [stderr] at src/libstd/panicking.rs:296 [INFO] [stderr] 13: 0x55572275f93a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:80 [INFO] [stderr] 14: 0x55572275e4bd - std::panicking::try::hc046e7ee42ee744f [INFO] [stderr] at src/libstd/panicking.rs:275 [INFO] [stderr] 15: 0x55572275e4bd - std::panic::catch_unwind::h27dfc457c200aee0 [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 16: 0x55572275e4bd - std::rt::lang_start_internal::hea1b49a567afe309 [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 17: 0x5557227553f9 - std::rt::lang_start::h846dfc4b6ce2333a [INFO] [stderr] at /rustc/625451e376bb2e5283fc4741caa0a3e8a2ca4d54/src/libstd/rt.rs:64 [INFO] [stderr] 18: 0x55572275608a - main [INFO] [stderr] 19: 0x7f14feb32b97 - __libc_start_main [INFO] [stderr] 20: 0x55572275412a - _start [INFO] [stderr] 21: 0x0 - [INFO] [stderr] [INFO] running `"docker" "inspect" "a1567b84cebb07f3c9c644e5d781889913c4c9f097f489bd1ffc752f42b8b70c"` [INFO] running `"docker" "rm" "-f" "a1567b84cebb07f3c9c644e5d781889913c4c9f097f489bd1ffc752f42b8b70c"` [INFO] [stdout] a1567b84cebb07f3c9c644e5d781889913c4c9f097f489bd1ffc752f42b8b70c