[INFO] updating cached repository https://github.com/crazymykl/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] [stderr] From https://github.com/crazymykl/rust-koans [INFO] [stderr] 33d0906..c6e8193 master -> master [INFO] running `"git" "rev-parse" "HEAD"` [INFO] [stdout] c6e819324ce5f455fd2954fa67fc321b674240b5 [INFO] checking crazymykl/rust-koans against try#89c05fd3cc6404a13e1bd71450c6132a2755fa4b for pr-69741 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrazymykl%2Frust-koans" "/workspace/builds/worker-5/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/crazymykl/rust-koans on toolchain 89c05fd3cc6404a13e1bd71450c6132a2755fa4b [INFO] running `"/workspace/cargo-home/bin/cargo" "+89c05fd3cc6404a13e1bd71450c6132a2755fa4b" "read-manifest" "--manifest-path" "Cargo.toml"` [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-5/source/Cargo.toml [INFO] crate git repo https://github.com/crazymykl/rust-koans already has a lockfile, it will not be regenerated [INFO] running `"/workspace/cargo-home/bin/cargo" "+89c05fd3cc6404a13e1bd71450c6132a2755fa4b" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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" "+89c05fd3cc6404a13e1bd71450c6132a2755fa4b" "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] fcbf10c45c992de1cb3a3d19cb2ecce350ca50ba4e54ee9c731918bd2730d9b8 [INFO] running `"docker" "start" "-a" "fcbf10c45c992de1cb3a3d19cb2ecce350ca50ba4e54ee9c731918bd2730d9b8"` [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-811bfa512db51d2f/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: 0x55c103b8e894 - backtrace::backtrace::libunwind::trace::h91d1589f784e7177 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.44/src/backtrace/libunwind.rs:86 [INFO] [stderr] 1: 0x55c103b8e894 - backtrace::backtrace::trace_unsynchronized::h9ec8949702a1f108 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.44/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x55c103b8e894 - std::sys_common::backtrace::_print_fmt::h97468752f36a9a0e [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:78 [INFO] [stderr] 3: 0x55c103b8e894 - ::fmt::ha27a4263940af5a9 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:59 [INFO] [stderr] 4: 0x55c103ba764c - core::fmt::write::h061ec21cc1fda96c [INFO] [stderr] at src/libcore/fmt/mod.rs:1063 [INFO] [stderr] 5: 0x55c103b8cfe7 - std::io::Write::write_fmt::ha58db9b6b5ace99d [INFO] [stderr] at src/libstd/io/mod.rs:1428 [INFO] [stderr] 6: 0x55c103b90ce5 - std::sys_common::backtrace::_print::h92d96c5907bac82b [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:62 [INFO] [stderr] 7: 0x55c103b90ce5 - std::sys_common::backtrace::print::hb08c4606d19eee23 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stderr] 8: 0x55c103b90ce5 - std::panicking::default_hook::{{closure}}::h28e247f6a0250f5d [INFO] [stderr] at src/libstd/panicking.rs:204 [INFO] [stderr] 9: 0x55c103b90a32 - std::panicking::default_hook::h3647fb19c6fd2d5c [INFO] [stderr] at src/libstd/panicking.rs:224 [INFO] [stderr] 10: 0x55c103b912a2 - std::panicking::rust_panic_with_hook::h38d69a94e615bc72 [INFO] [stderr] at src/libstd/panicking.rs:470 [INFO] [stderr] 11: 0x55c103b90e8b - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:378 [INFO] [stderr] 12: 0x55c103b90dfb - std::panicking::begin_panic_fmt::h5f9b8ebe8c2c84f9 [INFO] [stderr] at src/libstd/panicking.rs:332 [INFO] [stderr] 13: 0x55c103b87178 - build_script_build::main::h4bf951125b31cb08 [INFO] [stderr] at /opt/rustwide/workdir/build.rs:13 [INFO] [stderr] 14: 0x55c103b8905b - std::rt::lang_start::{{closure}}::h47cc13ab55d7eb52 [INFO] [stderr] at /rustc/89c05fd3cc6404a13e1bd71450c6132a2755fa4b/src/libstd/rt.rs:67 [INFO] [stderr] 15: 0x55c103b90db3 - std::rt::lang_start_internal::{{closure}}::hf3e6a4ec162517f7 [INFO] [stderr] at src/libstd/rt.rs:52 [INFO] [stderr] 16: 0x55c103b90db3 - std::panicking::try::do_call::h77ed59d4706bc4a8 [INFO] [stderr] at src/libstd/panicking.rs:303 [INFO] [stderr] 17: 0x55c103b92b47 - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:86 [INFO] [stderr] 18: 0x55c103b917cb - std::panicking::try::h3e27a5213663f467 [INFO] [stderr] at src/libstd/panicking.rs:281 [INFO] [stderr] 19: 0x55c103b917cb - std::panic::catch_unwind::ha46de5fecc0d9a90 [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 20: 0x55c103b917cb - std::rt::lang_start_internal::hb81abf531274a39e [INFO] [stderr] at src/libstd/rt.rs:51 [INFO] [stderr] 21: 0x55c103b89037 - std::rt::lang_start::h48fb3f1f0fd8079b [INFO] [stderr] at /rustc/89c05fd3cc6404a13e1bd71450c6132a2755fa4b/src/libstd/rt.rs:67 [INFO] [stderr] 22: 0x55c103b8724a - main [INFO] [stderr] 23: 0x7f59c7b12b97 - __libc_start_main [INFO] [stderr] 24: 0x55c103b843ba - _start [INFO] [stderr] 25: 0x0 - [INFO] [stderr] [INFO] running `"docker" "inspect" "fcbf10c45c992de1cb3a3d19cb2ecce350ca50ba4e54ee9c731918bd2730d9b8"` [INFO] running `"docker" "rm" "-f" "fcbf10c45c992de1cb3a3d19cb2ecce350ca50ba4e54ee9c731918bd2730d9b8"` [INFO] [stdout] fcbf10c45c992de1cb3a3d19cb2ecce350ca50ba4e54ee9c731918bd2730d9b8