[INFO] cloning repository https://github.com/crazymykl/rust-koans [INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/crazymykl/rust-koans" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrazymykl%2Frust-koans", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrazymykl%2Frust-koans'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] e427bb720403f90dece0e298c50d536ed2fe4f6c [INFO] checking crazymykl/rust-koans against master#f5f33ec0e0455eefa72fc5567eb1280a4d5ee206 for pr-83312 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrazymykl%2Frust-koans" "/workspace/builds/worker-3/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/crazymykl/rust-koans on toolchain f5f33ec0e0455eefa72fc5567eb1280a4d5ee206 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/crazymykl/rust-koans [INFO] finished tweaking git repo https://github.com/crazymykl/rust-koans [INFO] tweaked toml for git repo https://github.com/crazymykl/rust-koans written to /workspace/builds/worker-3/source/Cargo.toml [INFO] crate git repo https://github.com/crazymykl/rust-koans already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 1b3bfe8455c540dc5586416f50dcc36d5f7ee9040a14dcd21f8fcf71befcb830 [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" "1b3bfe8455c540dc5586416f50dcc36d5f7ee9040a14dcd21f8fcf71befcb830", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "1b3bfe8455c540dc5586416f50dcc36d5f7ee9040a14dcd21f8fcf71befcb830", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1b3bfe8455c540dc5586416f50dcc36d5f7ee9040a14dcd21f8fcf71befcb830", kill_on_drop: false }` [INFO] [stdout] 1b3bfe8455c540dc5586416f50dcc36d5f7ee9040a14dcd21f8fcf71befcb830 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+f5f33ec0e0455eefa72fc5567eb1280a4d5ee206" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] [stdout] b871c70a9969691b448dd45b29b4b52175c02adb193307105755756cd499b895 [INFO] running `Command { std: "docker" "start" "-a" "b871c70a9969691b448dd45b29b4b52175c02adb193307105755756cd499b895", 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-00151bcc999dc4c4/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: 0x55c155b96780 - std::backtrace_rs::backtrace::libunwind::trace::h4dee703919bfd40a [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5 [INFO] [stderr] 1: 0x55c155b96780 - std::backtrace_rs::backtrace::trace_unsynchronized::h457e839f1a563e20 [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x55c155b96780 - std::sys_common::backtrace::_print_fmt::h86a55fb30f8393c8 [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stderr] 3: 0x55c155b96780 - ::fmt::h7b3d6cac46d277e1 [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stderr] 4: 0x55c155bacaaf - core::fmt::write::h127419eb46f2ecc9 [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/core/src/fmt/mod.rs:1092:17 [INFO] [stderr] 5: 0x55c155b95222 - std::io::Write::write_fmt::h6010cfbb4726588b [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/io/mod.rs:1572:15 [INFO] [stderr] 6: 0x55c155b982f5 - std::sys_common::backtrace::_print::h79b4f9652330cc9d [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stderr] 7: 0x55c155b982f5 - std::sys_common::backtrace::print::h330bb326a76af8cf [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stderr] 8: 0x55c155b982f5 - std::panicking::default_hook::{{closure}}::heb6a42a7d50a472e [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/panicking.rs:208:50 [INFO] [stderr] 9: 0x55c155b97da3 - std::panicking::default_hook::h17e521ba6d68d6e1 [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/panicking.rs:225:9 [INFO] [stderr] 10: 0x55c155b988fd - std::panicking::rust_panic_with_hook::h70db735e3a6e70cb [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/panicking.rs:591:17 [INFO] [stderr] 11: 0x55c155b98497 - std::panicking::begin_panic_handler::{{closure}}::h777c71c8e5a7e25c [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/panicking.rs:497:13 [INFO] [stderr] 12: 0x55c155b96c3c - std::sys_common::backtrace::__rust_end_short_backtrace::h3e9bf30168899554 [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/sys_common/backtrace.rs:141:18 [INFO] [stderr] 13: 0x55c155b983f9 - rust_begin_unwind [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/panicking.rs:493:5 [INFO] [stderr] 14: 0x55c155b7de3b - std::panicking::begin_panic_fmt::h0b6b6d9d830486ef [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/panicking.rs:435:5 [INFO] [stderr] 15: 0x55c155b81b09 - build_script_build::main::h766106beda060f1b [INFO] [stderr] at /opt/rustwide/workdir/build.rs:13:22 [INFO] [stderr] 16: 0x55c155b81d0b - core::ops::function::FnOnce::call_once::h2c11611025ed4809 [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/core/src/ops/function.rs:227:5 [INFO] [stderr] 17: 0x55c155b7fe8e - std::sys_common::backtrace::__rust_begin_short_backtrace::hfb79696599971b83 [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/sys_common/backtrace.rs:125:18 [INFO] [stderr] 18: 0x55c155b82641 - std::rt::lang_start::{{closure}}::h6577e9ff351d1f9f [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/rt.rs:66:18 [INFO] [stderr] 19: 0x55c155b98cfa - core::ops::function::impls:: for &F>::call_once::hbcc915e668c7ca11 [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/core/src/ops/function.rs:259:13 [INFO] [stderr] 20: 0x55c155b98cfa - std::panicking::try::do_call::h6b0f430d48122ddf [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/panicking.rs:379:40 [INFO] [stderr] 21: 0x55c155b98cfa - std::panicking::try::h6ba420e2e21b5afa [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/panicking.rs:343:19 [INFO] [stderr] 22: 0x55c155b98cfa - std::panic::catch_unwind::h8366719d1f615eee [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/panic.rs:431:14 [INFO] [stderr] 23: 0x55c155b98cfa - std::rt::lang_start_internal::h965c28c9ce06ee73 [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/rt.rs:51:25 [INFO] [stderr] 24: 0x55c155b82620 - std::rt::lang_start::h602d4055089fa2c4 [INFO] [stderr] at /rustc/f5f33ec0e0455eefa72fc5567eb1280a4d5ee206/library/std/src/rt.rs:65:5 [INFO] [stderr] 25: 0x55c155b81c0c - main [INFO] [stderr] 26: 0x7f1c898a40b3 - __libc_start_main [INFO] [stderr] 27: 0x55c155b7e7be - _start [INFO] [stderr] 28: 0x0 - [INFO] running `Command { std: "docker" "inspect" "b871c70a9969691b448dd45b29b4b52175c02adb193307105755756cd499b895", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b871c70a9969691b448dd45b29b4b52175c02adb193307105755756cd499b895", kill_on_drop: false }` [INFO] [stdout] b871c70a9969691b448dd45b29b4b52175c02adb193307105755756cd499b895