[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] checking meganriley/rust-koans against master#40daf23eeb711dadf140b2536e67e3ff4c999196 for pr-142287 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeganriley%2Frust-koans" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/meganriley/rust-koans on toolchain 40daf23eeb711dadf140b2536e67e3ff4c999196 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [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-2-tc1/source/Cargo.toml [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" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 471ad63d15b43605650444254db2bf8e0147ffced92df873a10bc5331e96c430 [INFO] running `Command { std: "docker" "start" "-a" "471ad63d15b43605650444254db2bf8e0147ffced92df873a10bc5331e96c430", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "471ad63d15b43605650444254db2bf8e0147ffced92df873a10bc5331e96c430", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "471ad63d15b43605650444254db2bf8e0147ffced92df873a10bc5331e96c430", kill_on_drop: false }` [INFO] [stdout] 471ad63d15b43605650444254db2bf8e0147ffced92df873a10bc5331e96c430 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:eea15d5475069c3ef791f10c2c6b5af2ee421ef2da1e680ecce1cba46243983b" "/opt/rustwide/cargo-home/bin/cargo" "+40daf23eeb711dadf140b2536e67e3ff4c999196" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 8925b07421064b46e2e873357f7828dd485991c8db6ad789ca2aa606663e0ebf [INFO] running `Command { std: "docker" "start" "-a" "8925b07421064b46e2e873357f7828dd485991c8db6ad789ca2aa606663e0ebf", 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' panicked at build.rs:13:22: [INFO] [stderr] Read-only file system (os error 30) [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x58bc1031a902 - std::backtrace_rs::backtrace::libunwind::trace::h60fb10b432689228 [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9 [INFO] [stderr] 1: 0x58bc1031a902 - std::backtrace_rs::backtrace::trace_unsynchronized::h06450e81fef4f496 [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14 [INFO] [stderr] 2: 0x58bc1031a902 - std::sys::backtrace::_print_fmt::h2bbd7bf3615fb1f9 [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/sys/backtrace.rs:66:9 [INFO] [stderr] 3: 0x58bc1031a902 - ::fmt::h102878e2c210f4bf [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/sys/backtrace.rs:39:26 [INFO] [stderr] 4: 0x58bc10336263 - core::fmt::rt::Argument::fmt::hf498ffc7bf9a9eb3 [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/core/src/fmt/rt.rs:173:76 [INFO] [stderr] 5: 0x58bc10336263 - core::fmt::write::ha0093c86db38a00a [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/core/src/fmt/mod.rs:1460:25 [INFO] [stderr] 6: 0x58bc103184e3 - std::io::default_write_fmt::h23dfe4f92ae48ea8 [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/io/mod.rs:639:11 [INFO] [stderr] 7: 0x58bc103184e3 - std::io::Write::write_fmt::h7fb33ad44966a7c3 [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/io/mod.rs:1914:13 [INFO] [stderr] 8: 0x58bc1031a752 - std::sys::backtrace::BacktraceLock::print::hfaac9be0d9db394e [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/sys/backtrace.rs:42:9 [INFO] [stderr] 9: 0x58bc1031b7c2 - std::panicking::default_hook::{{closure}}::h49646cc36f82c612 [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/panicking.rs:300:27 [INFO] [stderr] 10: 0x58bc1031b5c5 - std::panicking::default_hook::h917125c6049556ce [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/panicking.rs:327:9 [INFO] [stderr] 11: 0x58bc1031c092 - std::panicking::rust_panic_with_hook::h09a928ed8a68a6d1 [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/panicking.rs:833:13 [INFO] [stderr] 12: 0x58bc1031bf2a - std::panicking::begin_panic_handler::{{closure}}::h1341e77c8879c53d [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/panicking.rs:706:13 [INFO] [stderr] 13: 0x58bc1031adf9 - std::sys::backtrace::__rust_end_short_backtrace::h65a1e93faf20c139 [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/sys/backtrace.rs:168:18 [INFO] [stderr] 14: 0x58bc1031bbbd - __rustc[95f53afcf58bddbb]::rust_begin_unwind [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/panicking.rs:697:5 [INFO] [stderr] 15: 0x58bc10335530 - core::panicking::panic_fmt::h960af079158ffc51 [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/core/src/panicking.rs:75:14 [INFO] [stderr] 16: 0x58bc102f95e8 - core::panicking::panic_display::hadca34962d3ed3fc [INFO] [stderr] 17: 0x58bc102f9dab - build_script_build::main::hbf166750ec8f9f5f [INFO] [stderr] 18: 0x58bc102f8e43 - core::ops::function::FnOnce::call_once::hd785510a26fb823c [INFO] [stderr] 19: 0x58bc102f8cd6 - std::sys::backtrace::__rust_begin_short_backtrace::hd4d0d7013b8ffd8e [INFO] [stderr] 20: 0x58bc102f8a79 - std::rt::lang_start::{{closure}}::h70efb3446f0f5ada [INFO] [stderr] 21: 0x58bc103161f0 - core::ops::function::impls:: for &F>::call_once::h14c3b423e1277c7c [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/core/src/ops/function.rs:284:21 [INFO] [stderr] 22: 0x58bc103161f0 - std::panicking::catch_unwind::do_call::hdc917668d5c80b79 [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/panicking.rs:589:40 [INFO] [stderr] 23: 0x58bc103161f0 - std::panicking::catch_unwind::h13c7f40e7134ae9e [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/panicking.rs:552:19 [INFO] [stderr] 24: 0x58bc103161f0 - std::panic::catch_unwind::h8ec23e61038ca780 [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/panic.rs:359:14 [INFO] [stderr] 25: 0x58bc103161f0 - std::rt::lang_start_internal::{{closure}}::hf15274c0969caab5 [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/rt.rs:175:24 [INFO] [stderr] 26: 0x58bc103161f0 - std::panicking::catch_unwind::do_call::hc2ebfa74566bb231 [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/panicking.rs:589:40 [INFO] [stderr] 27: 0x58bc103161f0 - std::panicking::catch_unwind::he012c82203db5756 [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/panicking.rs:552:19 [INFO] [stderr] 28: 0x58bc103161f0 - std::panic::catch_unwind::hc94940deded8779f [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/panic.rs:359:14 [INFO] [stderr] 29: 0x58bc103161f0 - std::rt::lang_start_internal::hcd1bbb59121210cc [INFO] [stderr] at /rustc/40daf23eeb711dadf140b2536e67e3ff4c999196/library/std/src/rt.rs:171:5 [INFO] [stderr] 30: 0x58bc102f8a61 - std::rt::lang_start::hf964c5837ebc88db [INFO] [stderr] 31: 0x58bc102f9dc5 - main [INFO] [stderr] 32: 0x741b4ca761ca - [INFO] [stderr] 33: 0x741b4ca7628b - __libc_start_main [INFO] [stderr] 34: 0x58bc102f7955 - _start [INFO] [stderr] 35: 0x0 - [INFO] running `Command { std: "docker" "inspect" "8925b07421064b46e2e873357f7828dd485991c8db6ad789ca2aa606663e0ebf", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "8925b07421064b46e2e873357f7828dd485991c8db6ad789ca2aa606663e0ebf", kill_on_drop: false }` [INFO] [stdout] 8925b07421064b46e2e873357f7828dd485991c8db6ad789ca2aa606663e0ebf