[INFO] updating cached repository https://github.com/j3h/rust-koans [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] cc29866cd11b1e11dd61018baddd0f75fe6c3310 [INFO] checking j3h/rust-koans against try#1a608893c03d7722effeb0058e82770bd36b4b3c for pr-66504-1 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fj3h%2Frust-koans" "/workspace/builds/worker-1/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/j3h/rust-koans on toolchain 1a608893c03d7722effeb0058e82770bd36b4b3c [INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/j3h/rust-koans [INFO] finished tweaking git repo https://github.com/j3h/rust-koans [INFO] tweaked toml for git repo https://github.com/j3h/rust-koans written to /workspace/builds/worker-1/source/Cargo.toml [INFO] crate git repo https://github.com/j3h/rust-koans already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+1a608893c03d7722effeb0058e82770bd36b4b3c" "check" "--frozen" "--all" "--all-targets"` [INFO] [stdout] 57d9cfcf63c7d5c3670fbdb973025882c386bb15086ead4f29762506cadd33cb [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `"docker" "start" "-a" "57d9cfcf63c7d5c3670fbdb973025882c386bb15086ead4f29762506cadd33cb"` [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-6ab8b9dd4e356936/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: 0x558ce1912c54 - backtrace::backtrace::libunwind::trace::h3bbf4648c1ae426f [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x558ce1912c54 - backtrace::backtrace::trace_unsynchronized::hd404207fbb521b80 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x558ce1912c54 - std::sys_common::backtrace::_print_fmt::ha5e9db2a4a7c3bf7 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:84 [INFO] [stderr] 3: 0x558ce1912c54 - ::fmt::hb321702719701de2 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:61 [INFO] [stderr] 4: 0x558ce192b57c - core::fmt::write::ha0ad8457542de65a [INFO] [stderr] at src/libcore/fmt/mod.rs:1024 [INFO] [stderr] 5: 0x558ce19114e7 - std::io::Write::write_fmt::h08dcdb1643423f1b [INFO] [stderr] at src/libstd/io/mod.rs:1428 [INFO] [stderr] 6: 0x558ce1914bbe - std::sys_common::backtrace::_print::h0dfeb7d775671ffd [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:65 [INFO] [stderr] 7: 0x558ce1914bbe - std::sys_common::backtrace::print::h82adacc4ae5cacef [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:50 [INFO] [stderr] 8: 0x558ce1914bbe - std::panicking::default_hook::{{closure}}::hf56d3392014022bc [INFO] [stderr] at src/libstd/panicking.rs:193 [INFO] [stderr] 9: 0x558ce19148b1 - std::panicking::default_hook::hafde2c03508207ee [INFO] [stderr] at src/libstd/panicking.rs:210 [INFO] [stderr] 10: 0x558ce19151eb - std::panicking::rust_panic_with_hook::hc79891a9d857cb2e [INFO] [stderr] at src/libstd/panicking.rs:471 [INFO] [stderr] 11: 0x558ce1914d9e - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:375 [INFO] [stderr] 12: 0x558ce1914ce0 - std::panicking::begin_panic_fmt::ha522136311779bb8 [INFO] [stderr] at src/libstd/panicking.rs:326 [INFO] [stderr] 13: 0x558ce190d7e6 - build_script_build::main::h900765587ac2c796 [INFO] [stderr] at /opt/rustwide/workdir/build.rs:13 [INFO] [stderr] 14: 0x558ce190cf00 - std::rt::lang_start::{{closure}}::hcaf93013e32fedde [INFO] [stderr] at /rustc/1a608893c03d7722effeb0058e82770bd36b4b3c/src/libstd/rt.rs:67 [INFO] [stderr] 15: 0x558ce1914c83 - std::rt::lang_start_internal::{{closure}}::hc8a0374623d6d364 [INFO] [stderr] at src/libstd/rt.rs:52 [INFO] [stderr] 16: 0x558ce1914c83 - std::panicking::try::do_call::h538ebfedf05f5b5b [INFO] [stderr] at src/libstd/panicking.rs:292 [INFO] [stderr] 17: 0x558ce1916a2a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:78 [INFO] [stderr] 18: 0x558ce1915680 - std::panicking::try::hf03e102df78c485c [INFO] [stderr] at src/libstd/panicking.rs:270 [INFO] [stderr] 19: 0x558ce1915680 - std::panic::catch_unwind::hf039e184ab932a8b [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 20: 0x558ce1915680 - std::rt::lang_start_internal::h97affefd274044ee [INFO] [stderr] at src/libstd/rt.rs:51 [INFO] [stderr] 21: 0x558ce190ced9 - std::rt::lang_start::h3b78074054a07749 [INFO] [stderr] at /rustc/1a608893c03d7722effeb0058e82770bd36b4b3c/src/libstd/rt.rs:67 [INFO] [stderr] 22: 0x558ce190d9ca - main [INFO] [stderr] 23: 0x7ff3936e3b97 - __libc_start_main [INFO] [stderr] 24: 0x558ce190c04a - _start [INFO] [stderr] 25: 0x0 - [INFO] [stderr] [INFO] running `"docker" "inspect" "57d9cfcf63c7d5c3670fbdb973025882c386bb15086ead4f29762506cadd33cb"` [INFO] running `"docker" "rm" "-f" "57d9cfcf63c7d5c3670fbdb973025882c386bb15086ead4f29762506cadd33cb"` [INFO] [stdout] 57d9cfcf63c7d5c3670fbdb973025882c386bb15086ead4f29762506cadd33cb