[INFO] cloning repository https://github.com/bitcartel/rust-koans-solutions [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bitcartel/rust-koans-solutions" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbitcartel%2Frust-koans-solutions"` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbitcartel%2Frust-koans-solutions'... [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] fa1cc79b191627ba13abd5c639ffff97f6c9e08a [INFO] checking bitcartel/rust-koans-solutions against try#ea663bba38739867a4b75ac820991b4f5d093c3b for pr-62262-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbitcartel%2Frust-koans-solutions" "/workspace/builds/worker-2/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/bitcartel/rust-koans-solutions on toolchain ea663bba38739867a4b75ac820991b4f5d093c3b [INFO] running `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "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 /workspace/builds/worker-2/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 `"/workspace/cargo-home/bin/cargo" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "MAP_USER_ID=0" "-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" "+ea663bba38739867a4b75ac820991b4f5d093c3b" "check" "--frozen" "--all" "--all-targets"` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] ddfee199acc881e55c7df79ef59c3f0a82caa8c903c19c6f7924c5ea39b50dcd [INFO] running `"docker" "start" "-a" "ddfee199acc881e55c7df79ef59c3f0a82caa8c903c19c6f7924c5ea39b50dcd"` [INFO] [stderr] Blocking waiting for file lock on package cache [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-07933946ff79b26a/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: 0x562847b9531a - backtrace::backtrace::libunwind::trace::h62ee5d8325268128 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x562847b9531a - backtrace::backtrace::trace_unsynchronized::h0c2dcc20fbafc255 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x562847b9531a - std::sys_common::backtrace::_print_fmt::h5452375970baa944 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:77 [INFO] [stderr] 3: 0x562847b9531a - ::fmt::hdcdebd1ff29cf05e [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:61 [INFO] [stderr] 4: 0x562847bae1ec - core::fmt::write::h1a9d5001c75dea4b [INFO] [stderr] at src/libcore/fmt/mod.rs:1028 [INFO] [stderr] 5: 0x562847b93ba7 - std::io::Write::write_fmt::hc50d5b4b29eeddb4 [INFO] [stderr] at src/libstd/io/mod.rs:1412 [INFO] [stderr] 6: 0x562847b9764e - std::sys_common::backtrace::_print::hd026679112716709 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:65 [INFO] [stderr] 7: 0x562847b9764e - std::sys_common::backtrace::print::hc2cd7cb69b3121ae [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:50 [INFO] [stderr] 8: 0x562847b9764e - std::panicking::default_hook::{{closure}}::hac834639b20b63f7 [INFO] [stderr] at src/libstd/panicking.rs:187 [INFO] [stderr] 9: 0x562847b97351 - std::panicking::default_hook::h2fc956babc86e97d [INFO] [stderr] at src/libstd/panicking.rs:204 [INFO] [stderr] 10: 0x562847b97c95 - std::panicking::rust_panic_with_hook::hb65306f2c92eac01 [INFO] [stderr] at src/libstd/panicking.rs:467 [INFO] [stderr] 11: 0x562847b97832 - std::panicking::continue_panic_fmt::h22291b07d0b7f087 [INFO] [stderr] at src/libstd/panicking.rs:374 [INFO] [stderr] 12: 0x562847b9778c - std::panicking::begin_panic_fmt::h3306751e67e04457 [INFO] [stderr] at src/libstd/panicking.rs:329 [INFO] [stderr] 13: 0x562847b900b6 - build_script_build::main::h2518851b94f335d9 [INFO] [stderr] at /opt/rustwide/workdir/build.rs:13 [INFO] [stderr] 14: 0x562847b8f560 - std::rt::lang_start::{{closure}}::h13823213b3896007 [INFO] [stderr] at /rustc/ea663bba38739867a4b75ac820991b4f5d093c3b/src/libstd/rt.rs:61 [INFO] [stderr] 15: 0x562847b97713 - std::rt::lang_start_internal::{{closure}}::hbff5fe9c19d221a8 [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 16: 0x562847b97713 - std::panicking::try::do_call::h330d2d9ad3936443 [INFO] [stderr] at src/libstd/panicking.rs:286 [INFO] [stderr] 17: 0x562847b9960a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:80 [INFO] [stderr] 18: 0x562847b9818d - std::panicking::try::h0001f4cc821eb44d [INFO] [stderr] at src/libstd/panicking.rs:265 [INFO] [stderr] 19: 0x562847b9818d - std::panic::catch_unwind::hc7071df6aa2e6fb8 [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 20: 0x562847b9818d - std::rt::lang_start_internal::hd852b1b003ba5a93 [INFO] [stderr] at src/libstd/rt.rs:47 [INFO] [stderr] 21: 0x562847b8f539 - std::rt::lang_start::h565351fdbcdb596a [INFO] [stderr] at /rustc/ea663bba38739867a4b75ac820991b4f5d093c3b/src/libstd/rt.rs:61 [INFO] [stderr] 22: 0x562847b9029a - main [INFO] [stderr] 23: 0x7f6095993b97 - __libc_start_main [INFO] [stderr] 24: 0x562847b8e1fa - _start [INFO] [stderr] 25: 0x0 - [INFO] [stderr] [INFO] running `"docker" "inspect" "ddfee199acc881e55c7df79ef59c3f0a82caa8c903c19c6f7924c5ea39b50dcd"` [INFO] running `"docker" "rm" "-f" "ddfee199acc881e55c7df79ef59c3f0a82caa8c903c19c6f7924c5ea39b50dcd"` [INFO] [stdout] ddfee199acc881e55c7df79ef59c3f0a82caa8c903c19c6f7924c5ea39b50dcd