[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/e427bb720403f90dece0e298c50d536ed2fe4f6c against master#ff1737bb00913444173658b4e0b274fd79aabf66 for pr-132712-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrazymykl%2Frust-koans" "/workspace/builds/worker-5-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/crazymykl/rust-koans on toolchain ff1737bb00913444173658b4e0b274fd79aabf66 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "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-5-tc1/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: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 48ed77eef6636e87565856b7fd27d0e59fee598e06a5fe245fe9ffd07945a9a2 [INFO] running `Command { std: "docker" "start" "-a" "48ed77eef6636e87565856b7fd27d0e59fee598e06a5fe245fe9ffd07945a9a2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "48ed77eef6636e87565856b7fd27d0e59fee598e06a5fe245fe9ffd07945a9a2", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "48ed77eef6636e87565856b7fd27d0e59fee598e06a5fe245fe9ffd07945a9a2", kill_on_drop: false }` [INFO] [stdout] 48ed77eef6636e87565856b7fd27d0e59fee598e06a5fe245fe9ffd07945a9a2 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:4a844ea9eb2546a2d2c7022eacef16ef2e8229c7fbb2c7d4d55a9ceca922f72d" "/opt/rustwide/cargo-home/bin/cargo" "+ff1737bb00913444173658b4e0b274fd79aabf66" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] c0b257bb70ace56e6d026d17c522ffad37370d502df15af5d3434e5d96b35cc7 [INFO] running `Command { std: "docker" "start" "-a" "c0b257bb70ace56e6d026d17c522ffad37370d502df15af5d3434e5d96b35cc7", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [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] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation. [INFO] [stderr] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/target/debug/build/koans-6423e879e0081c5b/build-script-build` (exit status: 101) [INFO] [stderr] --- stderr [INFO] [stderr] thread 'main' panicked at build.rs:13:22: [INFO] [stderr] Read-only file system (os error 30) [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x5d01666f3a0a - std::backtrace_rs::backtrace::libunwind::trace::h4a182ed5026c4960 [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5 [INFO] [stderr] 1: 0x5d01666f3a0a - std::backtrace_rs::backtrace::trace_unsynchronized::hd36eaf0d0af663ac [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x5d01666f3a0a - std::sys::backtrace::_print_fmt::h5bc686de8bf76aa3 [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/sys/backtrace.rs:66:9 [INFO] [stderr] 3: 0x5d01666f3a0a - ::fmt::hd8bd9250b5d34cf2 [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/sys/backtrace.rs:39:26 [INFO] [stderr] 4: 0x5d01667100a3 - core::fmt::rt::Argument::fmt::h479db8f948910918 [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/core/src/fmt/rt.rs:177:76 [INFO] [stderr] 5: 0x5d01667100a3 - core::fmt::write::h8ea7001525e04e92 [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/core/src/fmt/mod.rs:1189:21 [INFO] [stderr] 6: 0x5d01666f12c3 - std::io::Write::write_fmt::h9a3a3a90a20c720b [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/io/mod.rs:1884:15 [INFO] [stderr] 7: 0x5d01666f3852 - std::sys::backtrace::BacktraceLock::print::h524f4afae71bff25 [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/sys/backtrace.rs:42:9 [INFO] [stderr] 8: 0x5d01666f481c - std::panicking::default_hook::{{closure}}::hbf0efdb45c0ec2fa [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/panicking.rs:268:22 [INFO] [stderr] 9: 0x5d01666f4662 - std::panicking::default_hook::hd8655fd75a36fb4e [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/panicking.rs:295:9 [INFO] [stderr] 10: 0x5d01666f4e17 - std::panicking::rust_panic_with_hook::hfd3e39fd18e5a522 [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/panicking.rs:801:13 [INFO] [stderr] 11: 0x5d01666f4caa - std::panicking::begin_panic_handler::{{closure}}::h541106c2fc98c78e [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/panicking.rs:674:13 [INFO] [stderr] 12: 0x5d01666f3ee9 - std::sys::backtrace::__rust_end_short_backtrace::hd41b812be983a407 [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/sys/backtrace.rs:170:18 [INFO] [stderr] 13: 0x5d01666f493c - rust_begin_unwind [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/panicking.rs:665:5 [INFO] [stderr] 14: 0x5d016670f2f0 - core::panicking::panic_fmt::h6d97ef49812eecdc [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/core/src/panicking.rs:76:14 [INFO] [stderr] 15: 0x5d01666d3984 - core::panicking::panic_display::h80f75773c48b9e93 [INFO] [stderr] 16: 0x5d01666d41a9 - build_script_build::main::h1f5cd82f1ef58d40 [INFO] [stderr] 17: 0x5d01666d3383 - core::ops::function::FnOnce::call_once::h7459760662570a44 [INFO] [stderr] 18: 0x5d01666d3256 - std::sys::backtrace::__rust_begin_short_backtrace::h6101b888a5524344 [INFO] [stderr] 19: 0x5d01666d3009 - std::rt::lang_start::{{closure}}::he2b3490f11918fca [INFO] [stderr] 20: 0x5d01666ef587 - core::ops::function::impls:: for &F>::call_once::h85d3b6433c6201ad [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/core/src/ops/function.rs:284:13 [INFO] [stderr] 21: 0x5d01666ef587 - std::panicking::try::do_call::h1e58a303c26811b2 [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/panicking.rs:557:40 [INFO] [stderr] 22: 0x5d01666ef587 - std::panicking::try::hf884ee642c4250a3 [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/panicking.rs:520:19 [INFO] [stderr] 23: 0x5d01666ef587 - std::panic::catch_unwind::h16d69298af9a3692 [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/panic.rs:358:14 [INFO] [stderr] 24: 0x5d01666ef587 - std::rt::lang_start_internal::{{closure}}::h5a8a6f94cdf753a6 [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/rt.rs:174:48 [INFO] [stderr] 25: 0x5d01666ef587 - std::panicking::try::do_call::hf6ee2fe994f58e18 [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/panicking.rs:557:40 [INFO] [stderr] 26: 0x5d01666ef587 - std::panicking::try::hc1282bf2eeca2940 [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/panicking.rs:520:19 [INFO] [stderr] 27: 0x5d01666ef587 - std::panic::catch_unwind::h212572842a792e2c [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/panic.rs:358:14 [INFO] [stderr] 28: 0x5d01666ef587 - std::rt::lang_start_internal::h9681d29d05b11740 [INFO] [stderr] at /rustc/ff1737bb00913444173658b4e0b274fd79aabf66/library/std/src/rt.rs:174:20 [INFO] [stderr] 29: 0x5d01666d2fe7 - std::rt::lang_start::h8cf60953e1fb0918 [INFO] [stderr] 30: 0x5d01666d41c5 - main [INFO] [stderr] 31: 0x742b3c6f6d90 - [INFO] [stderr] 32: 0x742b3c6f6e40 - __libc_start_main [INFO] [stderr] 33: 0x5d01666d21a5 - _start [INFO] [stderr] 34: 0x0 - [INFO] running `Command { std: "docker" "inspect" "c0b257bb70ace56e6d026d17c522ffad37370d502df15af5d3434e5d96b35cc7", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c0b257bb70ace56e6d026d17c522ffad37370d502df15af5d3434e5d96b35cc7", kill_on_drop: false }` [INFO] [stdout] c0b257bb70ace56e6d026d17c522ffad37370d502df15af5d3434e5d96b35cc7