[INFO] updating cached repository https://github.com/bitcartel/rust-koans-solutions [INFO] running `"git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/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] checking bitcartel/rust-koans-solutions against try#e922e6444795ab795fab1943288aee3d543699b8 for pr-66852 [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 e922e6444795ab795fab1943288aee3d543699b8 [INFO] running `"/workspace/cargo-home/bin/cargo" "+e922e6444795ab795fab1943288aee3d543699b8" "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" "+e922e6444795ab795fab1943288aee3d543699b8" "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" "+e922e6444795ab795fab1943288aee3d543699b8" "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] ff5b49961877f3d9831b9483fbd4f7e9a028522789447faac6e85498cea8024f [INFO] running `"docker" "start" "-a" "ff5b49961877f3d9831b9483fbd4f7e9a028522789447faac6e85498cea8024f"` [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-7bbe0923c24370c7/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: 0x55a7e2004c54 - backtrace::backtrace::libunwind::trace::h9f1d8738cf6f142e [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x55a7e2004c54 - backtrace::backtrace::trace_unsynchronized::h36d929b1b2ff5781 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x55a7e2004c54 - std::sys_common::backtrace::_print_fmt::hacbc333e6aeece5a [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:84 [INFO] [stderr] 3: 0x55a7e2004c54 - ::fmt::hdf9238626066ab75 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:61 [INFO] [stderr] 4: 0x55a7e201d57c - core::fmt::write::h5e029752b22165fa [INFO] [stderr] at src/libcore/fmt/mod.rs:1024 [INFO] [stderr] 5: 0x55a7e20034e7 - std::io::Write::write_fmt::hf6191160ed350e3f [INFO] [stderr] at src/libstd/io/mod.rs:1428 [INFO] [stderr] 6: 0x55a7e2006bbe - std::sys_common::backtrace::_print::h6a8189d6f64e43ee [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:65 [INFO] [stderr] 7: 0x55a7e2006bbe - std::sys_common::backtrace::print::h8fb1dcbcd98a6ec2 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:50 [INFO] [stderr] 8: 0x55a7e2006bbe - std::panicking::default_hook::{{closure}}::h85d7bb172edc868f [INFO] [stderr] at src/libstd/panicking.rs:193 [INFO] [stderr] 9: 0x55a7e20068b1 - std::panicking::default_hook::h4c7e437cd4a16e76 [INFO] [stderr] at src/libstd/panicking.rs:210 [INFO] [stderr] 10: 0x55a7e20071eb - std::panicking::rust_panic_with_hook::h8647154d80cbed98 [INFO] [stderr] at src/libstd/panicking.rs:471 [INFO] [stderr] 11: 0x55a7e2006d9e - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:375 [INFO] [stderr] 12: 0x55a7e2006ce0 - std::panicking::begin_panic_fmt::h1d9a70b21fb37639 [INFO] [stderr] at src/libstd/panicking.rs:326 [INFO] [stderr] 13: 0x55a7e1fff7e6 - build_script_build::main::h5f422dc5962f9972 [INFO] [stderr] at /opt/rustwide/workdir/build.rs:13 [INFO] [stderr] 14: 0x55a7e1ffef00 - std::rt::lang_start::{{closure}}::h27027577721ffdd8 [INFO] [stderr] at /rustc/e922e6444795ab795fab1943288aee3d543699b8/src/libstd/rt.rs:67 [INFO] [stderr] 15: 0x55a7e2006c83 - std::rt::lang_start_internal::{{closure}}::h537a2d77f0f9eb2b [INFO] [stderr] at src/libstd/rt.rs:52 [INFO] [stderr] 16: 0x55a7e2006c83 - std::panicking::try::do_call::hac85bb9436248e0f [INFO] [stderr] at src/libstd/panicking.rs:292 [INFO] [stderr] 17: 0x55a7e2008a2a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:78 [INFO] [stderr] 18: 0x55a7e2007680 - std::panicking::try::hfda737be6bc9b3a3 [INFO] [stderr] at src/libstd/panicking.rs:270 [INFO] [stderr] 19: 0x55a7e2007680 - std::panic::catch_unwind::hb168c94334b21b4b [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 20: 0x55a7e2007680 - std::rt::lang_start_internal::h76b1fe1020874f18 [INFO] [stderr] at src/libstd/rt.rs:51 [INFO] [stderr] 21: 0x55a7e1ffeed9 - std::rt::lang_start::h8777908191e6dcbe [INFO] [stderr] at /rustc/e922e6444795ab795fab1943288aee3d543699b8/src/libstd/rt.rs:67 [INFO] [stderr] 22: 0x55a7e1fff9ca - main [INFO] [stderr] 23: 0x7f3128bb4b97 - __libc_start_main [INFO] [stderr] 24: 0x55a7e1ffe04a - _start [INFO] [stderr] 25: 0x0 - [INFO] [stderr] [INFO] running `"docker" "inspect" "ff5b49961877f3d9831b9483fbd4f7e9a028522789447faac6e85498cea8024f"` [INFO] running `"docker" "rm" "-f" "ff5b49961877f3d9831b9483fbd4f7e9a028522789447faac6e85498cea8024f"` [INFO] [stdout] ff5b49961877f3d9831b9483fbd4f7e9a028522789447faac6e85498cea8024f