[INFO] cloning repository https://github.com/bitcartel/rust-koans-solutions [INFO] running `Command { std: "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", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbitcartel%2Frust-koans-solutions'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] fa1cc79b191627ba13abd5c639ffff97f6c9e08a [INFO] checking bitcartel/rust-koans-solutions against master#39b841dfe36f90a7cd111e7f0c55f32594f6e578 for pr-77035 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbitcartel%2Frust-koans-solutions" "/workspace/builds/worker-0/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/bitcartel/rust-koans-solutions on toolchain 39b841dfe36f90a7cd111e7f0c55f32594f6e578 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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-0/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 `Command { std: "/workspace/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 7db8a0c19aaea02e493150e227fceb8d4d6cb26869e1f558218e2c804d8322e0 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "7db8a0c19aaea02e493150e227fceb8d4d6cb26869e1f558218e2c804d8322e0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "7db8a0c19aaea02e493150e227fceb8d4d6cb26869e1f558218e2c804d8322e0", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "7db8a0c19aaea02e493150e227fceb8d4d6cb26869e1f558218e2c804d8322e0", kill_on_drop: false }` [INFO] [stdout] 7db8a0c19aaea02e493150e227fceb8d4d6cb26869e1f558218e2c804d8322e0 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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" "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" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+39b841dfe36f90a7cd111e7f0c55f32594f6e578" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 4a0d83c3ae971a94c01842da3ad93640ce1d5dd8c447aab98267d01f74c9511d [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "4a0d83c3ae971a94c01842da3ad93640ce1d5dd8c447aab98267d01f74c9511d", kill_on_drop: false }` [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-931f66dd848e824c/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: 0x55840b1ea547 - std::backtrace_rs::backtrace::libunwind::trace::h746c3e9529d524bc [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5 [INFO] [stderr] 1: 0x55840b1ea547 - std::backtrace_rs::backtrace::trace_unsynchronized::h86340908ff889faa [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x55840b1ea547 - std::sys_common::backtrace::_print_fmt::h43f85f9b18230404 [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stderr] 3: 0x55840b1ea547 - ::fmt::hc132ae1a5b5aa7cd [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stderr] 4: 0x55840b2051ec - core::fmt::write::hdf023a0036d2a25f [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/core/src/fmt/mod.rs:1078:17 [INFO] [stderr] 5: 0x55840b1e8992 - std::io::Write::write_fmt::h8580846154bcb66a [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/io/mod.rs:1519:15 [INFO] [stderr] 6: 0x55840b1ec285 - std::sys_common::backtrace::_print::h7ee55fed88d107a3 [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stderr] 7: 0x55840b1ec285 - std::sys_common::backtrace::print::h54a7d3e52a524177 [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stderr] 8: 0x55840b1ec285 - std::panicking::default_hook::{{closure}}::h60921e857bf55a40 [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/panicking.rs:208:50 [INFO] [stderr] 9: 0x55840b1ebdda - std::panicking::default_hook::hf0f9afb1017317fc [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/panicking.rs:225:9 [INFO] [stderr] 10: 0x55840b1eca21 - std::panicking::rust_panic_with_hook::h8d66bf42b407aaea [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/panicking.rs:591:17 [INFO] [stderr] 11: 0x55840b1ec567 - std::panicking::begin_panic_handler::{{closure}}::hde71edcd925d0c5e [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/panicking.rs:497:13 [INFO] [stderr] 12: 0x55840b1eaa0c - std::sys_common::backtrace::__rust_end_short_backtrace::h8a3c7d6cea578919 [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/sys_common/backtrace.rs:141:18 [INFO] [stderr] 13: 0x55840b1ec4c9 - rust_begin_unwind [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/panicking.rs:493:5 [INFO] [stderr] 14: 0x55840b1ec47b - std::panicking::begin_panic_fmt::hee67ce14b77d0396 [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/panicking.rs:435:5 [INFO] [stderr] 15: 0x55840b1d91c4 - build_script_build::main::h8d4e8ae26b0724e2 [INFO] [stderr] at /opt/rustwide/workdir/build.rs:13:22 [INFO] [stderr] 16: 0x55840b1d6b3b - core::ops::function::FnOnce::call_once::h0859620d01fdf08e [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/core/src/ops/function.rs:227:5 [INFO] [stderr] 17: 0x55840b1d699e - std::sys_common::backtrace::__rust_begin_short_backtrace::hc479c194e33d0910 [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/sys_common/backtrace.rs:125:18 [INFO] [stderr] 18: 0x55840b1d6131 - std::rt::lang_start::{{closure}}::h484691385bd4fb78 [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/rt.rs:66:18 [INFO] [stderr] 19: 0x55840b1ece47 - core::ops::function::impls:: for &F>::call_once::h54c39b9b8451875a [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/core/src/ops/function.rs:259:13 [INFO] [stderr] 20: 0x55840b1ece47 - std::panicking::try::do_call::hcdfba51a06e21b42 [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/panicking.rs:379:40 [INFO] [stderr] 21: 0x55840b1ece47 - std::panicking::try::hb36953ccd24f930d [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/panicking.rs:343:19 [INFO] [stderr] 22: 0x55840b1ece47 - std::panic::catch_unwind::hbb374cd03beb3824 [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/panic.rs:396:14 [INFO] [stderr] 23: 0x55840b1ece47 - std::rt::lang_start_internal::h97dca9624db2aa85 [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/rt.rs:51:25 [INFO] [stderr] 24: 0x55840b1d6107 - std::rt::lang_start::h18957c240f25d980 [INFO] [stderr] at /rustc/39b841dfe36f90a7cd111e7f0c55f32594f6e578/library/std/src/rt.rs:65:5 [INFO] [stderr] 25: 0x55840b1d92ca - main [INFO] [stderr] 26: 0x7f5aa76650b3 - __libc_start_main [INFO] [stderr] 27: 0x55840b1d50ae - _start [INFO] [stderr] 28: 0x0 - [INFO] running `Command { std: "docker" "inspect" "4a0d83c3ae971a94c01842da3ad93640ce1d5dd8c447aab98267d01f74c9511d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "4a0d83c3ae971a94c01842da3ad93640ce1d5dd8c447aab98267d01f74c9511d", kill_on_drop: false }` [INFO] [stdout] 4a0d83c3ae971a94c01842da3ad93640ce1d5dd8c447aab98267d01f74c9511d