[INFO] cloning repository https://github.com/JScearcy/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/JScearcy/Rust-Koans" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJScearcy%2FRust-Koans", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJScearcy%2FRust-Koans'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] cb4bceeb057657f833916c019f96605c7170382c [INFO] checking JScearcy/Rust-Koans/cb4bceeb057657f833916c019f96605c7170382c against master#f609b7e0586f81fefb3523e3e17adf779ac416be for pr-129466-2 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FJScearcy%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/JScearcy/Rust-Koans on toolchain f609b7e0586f81fefb3523e3e17adf779ac416be [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/JScearcy/Rust-Koans [INFO] finished tweaking git repo https://github.com/JScearcy/Rust-Koans [INFO] tweaked toml for git repo https://github.com/JScearcy/Rust-Koans written to /workspace/builds/worker-5-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/JScearcy/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" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] da2759489966bcc7c8eb831ba90d41c50f39b21e9de36636e394a4cdc4b4d18a [INFO] running `Command { std: "docker" "start" "-a" "da2759489966bcc7c8eb831ba90d41c50f39b21e9de36636e394a4cdc4b4d18a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "da2759489966bcc7c8eb831ba90d41c50f39b21e9de36636e394a4cdc4b4d18a", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "da2759489966bcc7c8eb831ba90d41c50f39b21e9de36636e394a4cdc4b4d18a", kill_on_drop: false }` [INFO] [stdout] da2759489966bcc7c8eb831ba90d41c50f39b21e9de36636e394a4cdc4b4d18a [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=forbid" "-e" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+f609b7e0586f81fefb3523e3e17adf779ac416be" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 170cb608f720766275e0dfcb06115b2caec22302f1d2c2a0c607121ef005058b [INFO] running `Command { std: "docker" "start" "-a" "170cb608f720766275e0dfcb06115b2caec22302f1d2c2a0c607121ef005058b", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021 [INFO] [stderr] Compiling koans v0.2.0 (/opt/rustwide/workdir) [INFO] [stderr] error: failed to run custom build command for `koans v0.2.0 (/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-db4b646b69e25643/build-script-build` (exit status: 101) [INFO] [stderr] --- stderr [INFO] [stderr] thread 'main' panicked at build.rs:7:10: [INFO] [stderr] called `Result::unwrap()` on an `Err` value: Os { code: 30, kind: ReadOnlyFilesystem, message: "Read-only file system" } [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x5c08998bb20a - std::backtrace_rs::backtrace::libunwind::trace::h97abfd8a85887826 [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/../../backtrace/src/backtrace/libunwind.rs:116:5 [INFO] [stderr] 1: 0x5c08998bb20a - std::backtrace_rs::backtrace::trace_unsynchronized::h3fe33c3e2ffb6416 [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x5c08998bb20a - std::sys::backtrace::_print_fmt::hdf29e1ca2ba4cbbc [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/sys/backtrace.rs:66:9 [INFO] [stderr] 3: 0x5c08998bb20a - ::fmt::h731c3e1b756ff019 [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/sys/backtrace.rs:39:26 [INFO] [stderr] 4: 0x5c08998d747b - core::fmt::rt::Argument::fmt::hdfecaf84742c5a76 [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/core/src/fmt/rt.rs:177:76 [INFO] [stderr] 5: 0x5c08998d747b - core::fmt::write::h9c97613a183100ea [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/core/src/fmt/mod.rs:1186:21 [INFO] [stderr] 6: 0x5c08998b8ae3 - std::io::Write::write_fmt::h7288d7c7dce2722e [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/io/mod.rs:1823:15 [INFO] [stderr] 7: 0x5c08998bb052 - std::sys::backtrace::BacktraceLock::print::h2bc6f048c13121f8 [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/sys/backtrace.rs:42:9 [INFO] [stderr] 8: 0x5c08998bc317 - std::panicking::default_hook::{{closure}}::hde92e91975a101c0 [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/panicking.rs:268:22 [INFO] [stderr] 9: 0x5c08998bc146 - std::panicking::default_hook::hd8d6e2273bfc5edc [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/panicking.rs:295:9 [INFO] [stderr] 10: 0x5c08998bc917 - std::panicking::rust_panic_with_hook::hb332f821833efd3b [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/panicking.rs:801:13 [INFO] [stderr] 11: 0x5c08998bc7b7 - std::panicking::begin_panic_handler::{{closure}}::h00065c7fd19dfc55 [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/panicking.rs:674:13 [INFO] [stderr] 12: 0x5c08998bb6e9 - std::sys::backtrace::__rust_end_short_backtrace::h10e475bd14bb8cb7 [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/sys/backtrace.rs:170:18 [INFO] [stderr] 13: 0x5c08998bc444 - rust_begin_unwind [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/panicking.rs:665:5 [INFO] [stderr] 14: 0x5c08998d66e3 - core::panicking::panic_fmt::h59e161f9c51d6f0e [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/core/src/panicking.rs:74:14 [INFO] [stderr] 15: 0x5c08998d6a56 - core::result::unwrap_failed::h54376d3d4b8f04d2 [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/core/src/result.rs:1689:5 [INFO] [stderr] 16: 0x5c089989c54f - build_script_build::main::he447f1e7b7457aa3 [INFO] [stderr] 17: 0x5c089989bbf3 - core::ops::function::FnOnce::call_once::hfbe1952e8a92dbcc [INFO] [stderr] 18: 0x5c089989bb26 - std::sys::backtrace::__rust_begin_short_backtrace::h4c1c4a94fc3822dc [INFO] [stderr] 19: 0x5c089989ba69 - std::rt::lang_start::{{closure}}::h8e8b942e2be6c00f [INFO] [stderr] 20: 0x5c08998b6db0 - core::ops::function::impls:: for &F>::call_once::h00708edcd5cb0bf9 [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/core/src/ops/function.rs:284:13 [INFO] [stderr] 21: 0x5c08998b6db0 - std::panicking::try::do_call::h3211acb5ef596e26 [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/panicking.rs:557:40 [INFO] [stderr] 22: 0x5c08998b6db0 - std::panicking::try::hfc77046d1a78b97f [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/panicking.rs:520:19 [INFO] [stderr] 23: 0x5c08998b6db0 - std::panic::catch_unwind::h8cc6f9c887e41bb5 [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/panic.rs:348:14 [INFO] [stderr] 24: 0x5c08998b6db0 - std::rt::lang_start_internal::{{closure}}::h1ae7a528cb090b94 [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/rt.rs:143:48 [INFO] [stderr] 25: 0x5c08998b6db0 - std::panicking::try::do_call::h7b341eaacca88c96 [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/panicking.rs:557:40 [INFO] [stderr] 26: 0x5c08998b6db0 - std::panicking::try::h2190145387d00b24 [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/panicking.rs:520:19 [INFO] [stderr] 27: 0x5c08998b6db0 - std::panic::catch_unwind::h39d0834a21ce2b28 [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/panic.rs:348:14 [INFO] [stderr] 28: 0x5c08998b6db0 - std::rt::lang_start_internal::hf1cb939424e8449c [INFO] [stderr] at /rustc/f609b7e0586f81fefb3523e3e17adf779ac416be/library/std/src/rt.rs:143:20 [INFO] [stderr] 29: 0x5c089989ba47 - std::rt::lang_start::h4a881b23f214c933 [INFO] [stderr] 30: 0x5c089989c5b5 - main [INFO] [stderr] 31: 0x7cfbd6ec9d90 - [INFO] [stderr] 32: 0x7cfbd6ec9e40 - __libc_start_main [INFO] [stderr] 33: 0x5c089989aee5 - _start [INFO] [stderr] 34: 0x0 - [INFO] running `Command { std: "docker" "inspect" "170cb608f720766275e0dfcb06115b2caec22302f1d2c2a0c607121ef005058b", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "170cb608f720766275e0dfcb06115b2caec22302f1d2c2a0c607121ef005058b", kill_on_drop: false }` [INFO] [stdout] 170cb608f720766275e0dfcb06115b2caec22302f1d2c2a0c607121ef005058b