[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 try#e6563ac70cbfd3196492061900e9e9793e065e4d for pr-69410 [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 e6563ac70cbfd3196492061900e9e9793e065e4d [INFO] running `"/workspace/cargo-home/bin/cargo" "+e6563ac70cbfd3196492061900e9e9793e065e4d" "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" "+e6563ac70cbfd3196492061900e9e9793e065e4d" "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" "+e6563ac70cbfd3196492061900e9e9793e065e4d" "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] 91d4eb2c6f4017481cf63be8b8c586a2fcf7fe8019e29680ea067909217098c0 [INFO] running `"docker" "start" "-a" "91d4eb2c6f4017481cf63be8b8c586a2fcf7fe8019e29680ea067909217098c0"` [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-d9a9ad874f3c6ccb/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" }', build.rs:4:5 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x557238632594 - backtrace::backtrace::libunwind::trace::he39e545812a59904 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.44/src/backtrace/libunwind.rs:86 [INFO] [stderr] 1: 0x557238632594 - backtrace::backtrace::trace_unsynchronized::h596715026eee51e4 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.44/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x557238632594 - std::sys_common::backtrace::_print_fmt::h196d06c568d25b0f [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:78 [INFO] [stderr] 3: 0x557238632594 - ::fmt::h048b813869065926 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:59 [INFO] [stderr] 4: 0x55723864b56c - core::fmt::write::ha16925aac835833d [INFO] [stderr] at src/libcore/fmt/mod.rs:1052 [INFO] [stderr] 5: 0x557238630bf7 - std::io::Write::write_fmt::h95bfea655590af11 [INFO] [stderr] at src/libstd/io/mod.rs:1428 [INFO] [stderr] 6: 0x5572386349c5 - std::sys_common::backtrace::_print::hcba28209f038ef57 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:62 [INFO] [stderr] 7: 0x5572386349c5 - std::sys_common::backtrace::print::h2707f659204ba9a7 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stderr] 8: 0x5572386349c5 - std::panicking::default_hook::{{closure}}::h73b31e76262b5189 [INFO] [stderr] at src/libstd/panicking.rs:204 [INFO] [stderr] 9: 0x557238634706 - std::panicking::default_hook::hca9d9cd32a0cdf06 [INFO] [stderr] at src/libstd/panicking.rs:224 [INFO] [stderr] 10: 0x557238634f82 - std::panicking::rust_panic_with_hook::h211e519d8a1287b1 [INFO] [stderr] at src/libstd/panicking.rs:470 [INFO] [stderr] 11: 0x557238634b6b - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:378 [INFO] [stderr] 12: 0x55723864a7b1 - core::panicking::panic_fmt::h431de662476685d8 [INFO] [stderr] at src/libcore/panicking.rs:85 [INFO] [stderr] 13: 0x55723864a5d3 - core::option::expect_none_failed::hc181fad86cb359f0 [INFO] [stderr] at src/libcore/option.rs:1211 [INFO] [stderr] 14: 0x55723862d0d9 - core::result::Result::unwrap::h09c0245ac606d911 [INFO] [stderr] at /rustc/e6563ac70cbfd3196492061900e9e9793e065e4d/src/libcore/result.rs:1003 [INFO] [stderr] 15: 0x55723862d43b - build_script_build::main::hf845a7e52c6290a6 [INFO] [stderr] at /opt/rustwide/workdir/build.rs:4 [INFO] [stderr] 16: 0x55723862d77b - std::rt::lang_start::{{closure}}::h4c84fea119a3dc50 [INFO] [stderr] at /rustc/e6563ac70cbfd3196492061900e9e9793e065e4d/src/libstd/rt.rs:67 [INFO] [stderr] 17: 0x557238634a93 - std::rt::lang_start_internal::{{closure}}::hf6d1163571f93f94 [INFO] [stderr] at src/libstd/rt.rs:52 [INFO] [stderr] 18: 0x557238634a93 - std::panicking::try::do_call::h7a8ec0b8e0eb339e [INFO] [stderr] at src/libstd/panicking.rs:303 [INFO] [stderr] 19: 0x557238636957 - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:86 [INFO] [stderr] 20: 0x557238635429 - std::panicking::try::h297151113815fa59 [INFO] [stderr] at src/libstd/panicking.rs:281 [INFO] [stderr] 21: 0x557238635429 - std::panic::catch_unwind::h73283fb286521b23 [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 22: 0x557238635429 - std::rt::lang_start_internal::h7ec9065b4aa80248 [INFO] [stderr] at src/libstd/rt.rs:51 [INFO] [stderr] 23: 0x55723862d757 - std::rt::lang_start::h22845e94ecfabbae [INFO] [stderr] at /rustc/e6563ac70cbfd3196492061900e9e9793e065e4d/src/libstd/rt.rs:67 [INFO] [stderr] 24: 0x55723862d47a - main [INFO] [stderr] 25: 0x7f6a9527db97 - __libc_start_main [INFO] [stderr] 26: 0x55723862cf1a - _start [INFO] [stderr] 27: 0x0 - [INFO] [stderr] [INFO] running `"docker" "inspect" "91d4eb2c6f4017481cf63be8b8c586a2fcf7fe8019e29680ea067909217098c0"` [INFO] running `"docker" "rm" "-f" "91d4eb2c6f4017481cf63be8b8c586a2fcf7fe8019e29680ea067909217098c0"` [INFO] [stdout] 91d4eb2c6f4017481cf63be8b8c586a2fcf7fe8019e29680ea067909217098c0