[INFO] updating cached repository https://github.com/bitcartel/rust-koans-solutions [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] fa1cc79b191627ba13abd5c639ffff97f6c9e08a [INFO] checking bitcartel/rust-koans-solutions against try#a243773eaf3fedcd203f10ae4579e4f106bf7ccd for pr-68325 [INFO] running `"git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbitcartel%2Frust-koans-solutions" "/workspace/builds/worker-7/source"` [INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/bitcartel/rust-koans-solutions on toolchain a243773eaf3fedcd203f10ae4579e4f106bf7ccd [INFO] running `"/workspace/cargo-home/bin/cargo" "+a243773eaf3fedcd203f10ae4579e4f106bf7ccd" "read-manifest" "--manifest-path" "Cargo.toml"` [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-7/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 `"/workspace/cargo-home/bin/cargo" "+a243773eaf3fedcd203f10ae4579e4f106bf7ccd" "fetch" "--locked" "--manifest-path" "Cargo.toml"` [INFO] running `"docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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" "+a243773eaf3fedcd203f10ae4579e4f106bf7ccd" "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] f1e018b00e582e825f05baee82b04ff1921fcc47e633d4461dc97e7ff01df3b6 [INFO] running `"docker" "start" "-a" "f1e018b00e582e825f05baee82b04ff1921fcc47e633d4461dc97e7ff01df3b6"` [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-1b9a493fe7a6ae80/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: 0x55702443b3f4 - backtrace::backtrace::libunwind::trace::hfbeb01b07def3f05 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/libunwind.rs:88 [INFO] [stderr] 1: 0x55702443b3f4 - backtrace::backtrace::trace_unsynchronized::h45f2e41cc54dcd88 [INFO] [stderr] at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/mod.rs:66 [INFO] [stderr] 2: 0x55702443b3f4 - std::sys_common::backtrace::_print_fmt::hf5722840fcbb1187 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:77 [INFO] [stderr] 3: 0x55702443b3f4 - ::fmt::ha9e99845bfb0ebce [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:59 [INFO] [stderr] 4: 0x55702445224c - core::fmt::write::hc529a780634bfe15 [INFO] [stderr] at src/libcore/fmt/mod.rs:1052 [INFO] [stderr] 5: 0x557024439cb7 - std::io::Write::write_fmt::hd171fdefd1d3df69 [INFO] [stderr] at src/libstd/io/mod.rs:1426 [INFO] [stderr] 6: 0x55702443d455 - std::sys_common::backtrace::_print::h8a5740dde9a43cd0 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:62 [INFO] [stderr] 7: 0x55702443d455 - std::sys_common::backtrace::print::h5436dddfead7eae5 [INFO] [stderr] at src/libstd/sys_common/backtrace.rs:49 [INFO] [stderr] 8: 0x55702443d455 - std::panicking::default_hook::{{closure}}::h3cc0af59c5ca4cc4 [INFO] [stderr] at src/libstd/panicking.rs:204 [INFO] [stderr] 9: 0x55702443d141 - std::panicking::default_hook::hf6b2894115daa715 [INFO] [stderr] at src/libstd/panicking.rs:224 [INFO] [stderr] 10: 0x55702443da0a - std::panicking::rust_panic_with_hook::h5bd6ca89052faee2 [INFO] [stderr] at src/libstd/panicking.rs:472 [INFO] [stderr] 11: 0x55702443d5f0 - rust_begin_unwind [INFO] [stderr] at src/libstd/panicking.rs:380 [INFO] [stderr] 12: 0x55702443d56b - std::panicking::begin_panic_fmt::hd54d3c109e076819 [INFO] [stderr] at src/libstd/panicking.rs:334 [INFO] [stderr] 13: 0x557024433c61 - build_script_build::main::hda5408b0c0b3c3d4 [INFO] [stderr] at /opt/rustwide/workdir/build.rs:13 [INFO] [stderr] 14: 0x5570244358b0 - std::rt::lang_start::{{closure}}::he0c86a3076691263 [INFO] [stderr] at /rustc/a243773eaf3fedcd203f10ae4579e4f106bf7ccd/src/libstd/rt.rs:67 [INFO] [stderr] 15: 0x55702443d523 - std::rt::lang_start_internal::{{closure}}::h1290f4aaa12eba49 [INFO] [stderr] at src/libstd/rt.rs:52 [INFO] [stderr] 16: 0x55702443d523 - std::panicking::try::do_call::h67a25163f365bfb5 [INFO] [stderr] at src/libstd/panicking.rs:305 [INFO] [stderr] 17: 0x55702443f287 - __rust_maybe_catch_panic [INFO] [stderr] at src/libpanic_unwind/lib.rs:86 [INFO] [stderr] 18: 0x55702443deb0 - std::panicking::try::h45cfcab1f9dbff97 [INFO] [stderr] at src/libstd/panicking.rs:281 [INFO] [stderr] 19: 0x55702443deb0 - std::panic::catch_unwind::hcc46ddf27ba0ee14 [INFO] [stderr] at src/libstd/panic.rs:394 [INFO] [stderr] 20: 0x55702443deb0 - std::rt::lang_start_internal::hf64f629cd7f49f66 [INFO] [stderr] at src/libstd/rt.rs:51 [INFO] [stderr] 21: 0x557024435889 - std::rt::lang_start::h82dd2d61c3f3c26f [INFO] [stderr] at /rustc/a243773eaf3fedcd203f10ae4579e4f106bf7ccd/src/libstd/rt.rs:67 [INFO] [stderr] 22: 0x557024433e4a - main [INFO] [stderr] 23: 0x7f02ff566b97 - __libc_start_main [INFO] [stderr] 24: 0x55702443138a - _start [INFO] [stderr] 25: 0x0 - [INFO] [stderr] [INFO] running `"docker" "inspect" "f1e018b00e582e825f05baee82b04ff1921fcc47e633d4461dc97e7ff01df3b6"` [INFO] running `"docker" "rm" "-f" "f1e018b00e582e825f05baee82b04ff1921fcc47e633d4461dc97e7ff01df3b6"` [INFO] [stdout] f1e018b00e582e825f05baee82b04ff1921fcc47e633d4461dc97e7ff01df3b6