[INFO] cloning repository https://github.com/meganriley/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/meganriley/rust-koans" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeganriley%2Frust-koans", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeganriley%2Frust-koans'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 150ce4defb1d8277f8fbc4ab044685598430a926 [INFO] testing meganriley/rust-koans against try#028592fec99e54cc92def5a2a849c673b066dd93 for pr-146098 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeganriley%2Frust-koans" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'... [INFO] [stderr] done. [INFO] started tweaking git repo https://github.com/meganriley/rust-koans [INFO] finished tweaking git repo https://github.com/meganriley/rust-koans [INFO] tweaked toml for git repo https://github.com/meganriley/rust-koans written to /workspace/builds/worker-1-tc2/source/Cargo.toml [INFO] validating manifest of git repo https://github.com/meganriley/rust-koans on toolchain 028592fec99e54cc92def5a2a849c673b066dd93 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+028592fec99e54cc92def5a2a849c673b066dd93" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] crate git repo https://github.com/meganriley/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" "+028592fec99e54cc92def5a2a849c673b066dd93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+028592fec99e54cc92def5a2a849c673b066dd93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b4a32239f787a969bdd4daf7bceeeceb19cc0d680645a8212c34c82a8fc527bb [INFO] running `Command { std: "docker" "start" "-a" "b4a32239f787a969bdd4daf7bceeeceb19cc0d680645a8212c34c82a8fc527bb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b4a32239f787a969bdd4daf7bceeeceb19cc0d680645a8212c34c82a8fc527bb", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b4a32239f787a969bdd4daf7bceeeceb19cc0d680645a8212c34c82a8fc527bb", kill_on_drop: false }` [INFO] [stdout] b4a32239f787a969bdd4daf7bceeeceb19cc0d680645a8212c34c82a8fc527bb [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+028592fec99e54cc92def5a2a849c673b066dd93" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 0c3888a2a1a539f43ee73d3de6884175d933afd0d4ec5f7fe689bf2d79d4c93f [INFO] running `Command { std: "docker" "start" "-a" "0c3888a2a1a539f43ee73d3de6884175d933afd0d4ec5f7fe689bf2d79d4c93f", kill_on_drop: false }` [INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2024 [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-4a28024071439e5c/build-script-build` (exit status: 101) [INFO] [stderr] --- stderr [INFO] [stderr] [INFO] [stderr] thread 'main' (53) panicked at build.rs:13:22: [INFO] [stderr] Read-only file system (os error 30) [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x6344e6250ba2 - std::backtrace_rs::backtrace::libunwind::trace::hcbb09259ca22005c [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stderr] 1: 0x6344e6250ba2 - std::backtrace_rs::backtrace::trace_unsynchronized::h0fac8c223cd6e456 [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stderr] 2: 0x6344e6250ba2 - std::sys::backtrace::_print_fmt::he5f2b5e0c66ce66e [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/sys/backtrace.rs:66:9 [INFO] [stderr] 3: 0x6344e6250ba2 - ::fmt::haf29e060fb6137a9 [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/sys/backtrace.rs:39:26 [INFO] [stderr] 4: 0x6344e625f91f - core::fmt::rt::Argument::fmt::h596977d9d4f722b0 [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/core/src/fmt/rt.rs:173:76 [INFO] [stderr] 5: 0x6344e625f91f - core::fmt::write::h0ee4d44b8e20572d [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/core/src/fmt/mod.rs:1468:25 [INFO] [stderr] 6: 0x6344e622ec21 - std::io::default_write_fmt::h763f5fc94ffb8fa4 [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/io/mod.rs:639:11 [INFO] [stderr] 7: 0x6344e622ec21 - std::io::Write::write_fmt::h3255f61ab3a84b50 [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/io/mod.rs:1954:13 [INFO] [stderr] 8: 0x6344e6233fb2 - std::sys::backtrace::BacktraceLock::print::h3db71735b2a2861b [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/sys/backtrace.rs:42:9 [INFO] [stderr] 9: 0x6344e623580c - std::panicking::default_hook::{{closure}}::h0168a26bb62ec69b [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/panicking.rs:301:27 [INFO] [stderr] 10: 0x6344e6235666 - std::panicking::default_hook::h7454a6fd0ab61b64 [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/panicking.rs:328:9 [INFO] [stderr] 11: 0x6344e6235e95 - std::panicking::panic_with_hook::h2d45a49bfd4e6ec4 [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/panicking.rs:834:13 [INFO] [stderr] 12: 0x6344e6235d2a - std::panicking::panic_handler::{{closure}}::h37f0f43a266cd34d [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/panicking.rs:707:13 [INFO] [stderr] 13: 0x6344e62340e9 - std::sys::backtrace::__rust_end_short_backtrace::h1ed0bd8883e4d747 [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/sys/backtrace.rs:174:18 [INFO] [stderr] 14: 0x6344e62236bd - __rustc[92da9811a626c906]::rust_begin_unwind [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/panicking.rs:698:5 [INFO] [stderr] 15: 0x6344e6262c30 - core::panicking::panic_fmt::hc1117383da035bf0 [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/core/src/panicking.rs:78:14 [INFO] [stderr] 16: 0x6344e6222de8 - core::panicking::panic_display::h5ed7a345edf2d951 [INFO] [stderr] 17: 0x6344e62212fb - build_script_build::main::hc118d9945cb42820 [INFO] [stderr] 18: 0x6344e62225e3 - core::ops::function::FnOnce::call_once::h08d387a332461134 [INFO] [stderr] 19: 0x6344e62224b6 - std::sys::backtrace::__rust_begin_short_backtrace::hb945a980f3343016 [INFO] [stderr] 20: 0x6344e6222259 - std::rt::lang_start::{{closure}}::h72ffbd360983a918 [INFO] [stderr] 21: 0x6344e6230020 - core::ops::function::impls:: for &F>::call_once::hd5ebf71c5e4058f5 [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/core/src/ops/function.rs:287:21 [INFO] [stderr] 22: 0x6344e6230020 - std::panicking::catch_unwind::do_call::h99d63385d30e2203 [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/panicking.rs:590:40 [INFO] [stderr] 23: 0x6344e6230020 - std::panicking::catch_unwind::hdbaffb291393f38e [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/panicking.rs:553:19 [INFO] [stderr] 24: 0x6344e6230020 - std::panic::catch_unwind::hf7dbd8ee5462ff74 [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/panic.rs:359:14 [INFO] [stderr] 25: 0x6344e6230020 - std::rt::lang_start_internal::{{closure}}::hea25e4193f841299 [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/rt.rs:175:24 [INFO] [stderr] 26: 0x6344e6230020 - std::panicking::catch_unwind::do_call::h184c143efff27042 [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/panicking.rs:590:40 [INFO] [stderr] 27: 0x6344e6230020 - std::panicking::catch_unwind::he4c032670b9f8931 [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/panicking.rs:553:19 [INFO] [stderr] 28: 0x6344e6230020 - std::panic::catch_unwind::h8c9476ae1d027606 [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/panic.rs:359:14 [INFO] [stderr] 29: 0x6344e6230020 - std::rt::lang_start_internal::h84384eff259c4dfe [INFO] [stderr] at /rustc/028592fec99e54cc92def5a2a849c673b066dd93/library/std/src/rt.rs:171:5 [INFO] [stderr] 30: 0x6344e6222241 - std::rt::lang_start::h915ea4e80e1fbe41 [INFO] [stderr] 31: 0x6344e62233b5 - main [INFO] [stderr] 32: 0x7626b84841ca - [INFO] [stderr] 33: 0x7626b848428b - __libc_start_main [INFO] [stderr] 34: 0x6344e6220f25 - _start [INFO] [stderr] 35: 0x0 - [INFO] running `Command { std: "docker" "inspect" "0c3888a2a1a539f43ee73d3de6884175d933afd0d4ec5f7fe689bf2d79d4c93f", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "0c3888a2a1a539f43ee73d3de6884175d933afd0d4ec5f7fe689bf2d79d4c93f", kill_on_drop: false }` [INFO] [stdout] 0c3888a2a1a539f43ee73d3de6884175d933afd0d4ec5f7fe689bf2d79d4c93f