[INFO] updating cached repository https://github.com/alexclear/rust-koans-answers [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] 89e124c056c315e10c6d5ab8548902c0cfc64be5 [INFO] checking alexclear/rust-koans-answers against master#446e5e57b667c841ba3ebb4b41b44fb98bd3af4b for pr-65294 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Falexclear%2Frust-koans-answers" "/workspace/builds/worker-12/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/alexclear/rust-koans-answers on toolchain 446e5e57b667c841ba3ebb4b41b44fb98bd3af4b [INFO] running `"/workspace/cargo-home/bin/cargo" "+446e5e57b667c841ba3ebb4b41b44fb98bd3af4b" "read-manifest" "--manifest-path" "Cargo.toml"` [INFO] started tweaking git repo https://github.com/alexclear/rust-koans-answers [INFO] finished tweaking git repo https://github.com/alexclear/rust-koans-answers [INFO] tweaked toml for git repo https://github.com/alexclear/rust-koans-answers written to /workspace/builds/worker-12/source/Cargo.toml [INFO] crate git repo https://github.com/alexclear/rust-koans-answers already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+446e5e57b667c841ba3ebb4b41b44fb98bd3af4b" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+446e5e57b667c841ba3ebb4b41b44fb98bd3af4b" "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] ba0d65ab56bde80001ac605fa3a92dcdab6ef34aec2220930dad43673083b2d7 [INFO] running `"docker" "start" "-a" "ba0d65ab56bde80001ac605fa3a92dcdab6ef34aec2220930dad43673083b2d7"` [INFO] [stderr] Compiling koans v0.2.0 (/opt/rustwide/workdir) [INFO] [stderr] error: failed to run custom build command for `koans v0.2.0 (/opt/rustwide/workdir)` [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/target/debug/build/koans-9282c40e92162ebc/build-script-build` (exit code: 101) [INFO] [stderr] --- stderr [INFO] [stderr] thread 'main' panicked at 'called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: Other, message: "Read-only file system" }', src/libcore/result.rs:1165:5 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x55ec63b01cb4 - backtrace::backtrace::libunwind::trace::hf7e4e82efae30884 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x55ec63b01cb4 - backtrace::backtrace::trace_unsynchronized::h0b0315e5422bf5c5 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.37/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x55ec63b01cb4 - std::sys_common::backtrace::_print_fmt::ha6354f2d842cef76 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:77 [INFO] [stderr] 3: 0x55ec63b01cb4 - ::fmt::hd54b1f5cf3adafe0 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:61 [INFO] [stderr] 4: 0x55ec63b1ab4c - core::fmt::write::hc967ac066a03859c [INFO] [stderr] at src/libcore/fmt/mod.rs:1028 [INFO] [stderr] 5: 0x55ec63b00577 - std::io::Write::write_fmt::h5b4ad0ea64c4a019 [INFO] [stderr] at src/libstd/io/mod.rs:1412 [INFO] [stderr] 6: 0x55ec63b03fbe - std::sys_common::backtrace::_print::h51b22d5c4d74bb83 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:65 [INFO] [stderr] 7: 0x55ec63b03fbe - std::sys_common::backtrace::print::h82f50a23f8a5bfab [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:50 [INFO] [stderr] 8: 0x55ec63b03fbe - std::panicking::default_hook::{{closure}}::h7ceeb6dc02a24c61 [INFO] [stderr] at src/libstd/panicking.rs:189 [INFO] [stderr] 9: 0x55ec63b03cc1 - std::panicking::default_hook::h123f2472ae8cf2b5 [INFO] [stderr] at src/libstd/panicking.rs:206 [INFO] [stderr] 10: 0x55ec63b04605 - std::panicking::rust_panic_with_hook::hf57d1dbfa9883023 [INFO] [stderr] at src/libstd/panicking.rs:469 [INFO] [stderr] 11: 0x55ec63b041a2 - std::panicking::continue_panic_fmt::he2a5eeeb3a084826 [INFO] [stderr] at src/libstd/panicking.rs:376 [INFO] [stderr] 12: 0x55ec63b04096 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:303 [INFO] [stderr] 13: 0x55ec63b1862a - core::panicking::panic_fmt::h37f4bfee9976e4e2 [INFO] [stderr] at src/libcore/panicking.rs:84 [INFO] [stderr] 14: 0x55ec63b18727 - core::result::unwrap_failed::h5532a76e6fe03f89 [INFO] [stderr] at src/libcore/result.rs:1165 [INFO] [stderr] 15: 0x55ec63afd4b0 - core::result::Result::unwrap::h5dd911c84de1cbd5 [INFO] [stderr] at /rustc/446e5e57b667c841ba3ebb4b41b44fb98bd3af4b/src/libcore/result.rs:933 [INFO] [stderr] 16: 0x55ec63afd181 - build_script_build::main::h5baa6ae037139679 [INFO] [stderr] at /opt/rustwide/workdir/build.rs:4 [INFO] [stderr] 17: 0x55ec63afd610 - std::rt::lang_start::{{closure}}::h69c0302b13a18338 [INFO] [stderr] at /rustc/446e5e57b667c841ba3ebb4b41b44fb98bd3af4b/src/libstd/rt.rs:61 [INFO] [stderr] 18: 0x55ec63b04083 - std::rt::lang_start_internal::{{closure}}::hbb846b1e183cc6f4 [INFO] [stderr] at src/libstd/rt.rs:48 [INFO] [stderr] 19: 0x55ec63b04083 - std::panicking::try::do_call::h63eace360fa6cc01 [INFO] [stderr] at src/libstd/panicking.rs:288 [INFO] [stderr] 20: 0x55ec63b05f6a - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:80 [INFO] [stderr] 21: 0x55ec63b04afd - std::panicking::try::h3b1bd45eacecf915 [INFO] [stderr] at src/libstd/panicking.rs:267 [INFO] [stderr] 22: 0x55ec63b04afd - std::panic::catch_unwind::hfbf4a2b77b10aaa4 [INFO] [stderr] at src/libstd/panic.rs:396 [INFO] [stderr] 23: 0x55ec63b04afd - std::rt::lang_start_internal::h3d7248e04377da19 [INFO] [stderr] at src/libstd/rt.rs:47 [INFO] [stderr] 24: 0x55ec63afd5e9 - std::rt::lang_start::h7ddc639e70a0a8f8 [INFO] [stderr] at /rustc/446e5e57b667c841ba3ebb4b41b44fb98bd3af4b/src/libstd/rt.rs:61 [INFO] [stderr] 25: 0x55ec63afd1ca - main [INFO] [stderr] 26: 0x7f5e0cacbb97 - __libc_start_main [INFO] [stderr] 27: 0x55ec63afcf7a - _start [INFO] [stderr] 28: 0x0 - [INFO] [stderr] [INFO] running `"docker" "inspect" "ba0d65ab56bde80001ac605fa3a92dcdab6ef34aec2220930dad43673083b2d7"` [INFO] running `"docker" "rm" "-f" "ba0d65ab56bde80001ac605fa3a92dcdab6ef34aec2220930dad43673083b2d7"` [INFO] [stdout] ba0d65ab56bde80001ac605fa3a92dcdab6ef34aec2220930dad43673083b2d7