[INFO] cloning repository https://github.com/Ninja-21-dev/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/Ninja-21-dev/Rust-Koans" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNinja-21-dev%2FRust-Koans", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNinja-21-dev%2FRust-Koans'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] 56949109c8f9e25d7ef9cadb33b70e4505eaa5a2 [INFO] checking Ninja-21-dev/Rust-Koans against master#af4a5a13a15fa0c60e06321077ef452f769b42fd for pr-122960-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNinja-21-dev%2FRust-Koans" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Ninja-21-dev/Rust-Koans on toolchain af4a5a13a15fa0c60e06321077ef452f769b42fd [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Ninja-21-dev/Rust-Koans [INFO] finished tweaking git repo https://github.com/Ninja-21-dev/Rust-Koans [INFO] tweaked toml for git repo https://github.com/Ninja-21-dev/Rust-Koans written to /workspace/builds/worker-4-tc1/source/Cargo.toml [INFO] crate git repo https://github.com/Ninja-21-dev/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" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 6e1e1f71067d0d58e96bb613faf3237938fc27125a2fbbc3d43080697a242570 [INFO] running `Command { std: "docker" "start" "-a" "6e1e1f71067d0d58e96bb613faf3237938fc27125a2fbbc3d43080697a242570", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "6e1e1f71067d0d58e96bb613faf3237938fc27125a2fbbc3d43080697a242570", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6e1e1f71067d0d58e96bb613faf3237938fc27125a2fbbc3d43080697a242570", kill_on_drop: false }` [INFO] [stdout] 6e1e1f71067d0d58e96bb613faf3237938fc27125a2fbbc3d43080697a242570 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+af4a5a13a15fa0c60e06321077ef452f769b42fd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 1768979d4fcda11c8d2c79e0eacd9bd026da7937b20eea4ff9caeb6d0602ce7d [INFO] running `Command { std: "docker" "start" "-a" "1768979d4fcda11c8d2c79e0eacd9bd026da7937b20eea4ff9caeb6d0602ce7d", kill_on_drop: false }` [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: 0x56446a81ef45 - std::backtrace_rs::backtrace::libunwind::trace::hb0d415bcff8c04ff [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5 [INFO] [stderr] 1: 0x56446a81ef45 - std::backtrace_rs::backtrace::trace_unsynchronized::hd3beb7af6a65b2fb [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x56446a81ef45 - std::sys_common::backtrace::_print_fmt::hb94d89680d7f5d1c [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/sys_common/backtrace.rs:68:5 [INFO] [stderr] 3: 0x56446a81ef45 - ::fmt::h42d21e2ba62fd274 [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/sys_common/backtrace.rs:44:22 [INFO] [stderr] 4: 0x56446a83c71b - core::fmt::rt::Argument::fmt::h8932bbbd2b9c37fe [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/core/src/fmt/rt.rs:142:9 [INFO] [stderr] 5: 0x56446a83c71b - core::fmt::write::h672f14b769052340 [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/core/src/fmt/mod.rs:1153:17 [INFO] [stderr] 6: 0x56446a81d1af - std::io::Write::write_fmt::h4d626b1d019eca5c [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/io/mod.rs:1843:15 [INFO] [stderr] 7: 0x56446a81ed1e - std::sys_common::backtrace::_print::h745e446c2e03c5ca [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/sys_common/backtrace.rs:47:5 [INFO] [stderr] 8: 0x56446a81ed1e - std::sys_common::backtrace::print::hf0f0fa4fb70dca2c [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/sys_common/backtrace.rs:34:9 [INFO] [stderr] 9: 0x56446a820189 - std::panicking::default_hook::{{closure}}::h607769b198639ae5 [INFO] [stderr] 10: 0x56446a81fef3 - std::panicking::default_hook::h1e5811a5a9298ba1 [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:292:9 [INFO] [stderr] 11: 0x56446a820624 - std::panicking::rust_panic_with_hook::hd0c5dc40875c06ef [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:789:13 [INFO] [stderr] 12: 0x56446a820506 - std::panicking::begin_panic_handler::{{closure}}::hde3f6d4bced89f43 [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:658:13 [INFO] [stderr] 13: 0x56446a81f409 - std::sys_common::backtrace::__rust_end_short_backtrace::h88e846e54ebde2e3 [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/sys_common/backtrace.rs:171:18 [INFO] [stderr] 14: 0x56446a820237 - rust_begin_unwind [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:646:5 [INFO] [stderr] 15: 0x56446a802b86 - core::panicking::panic_fmt::h5ffad3fb9ad671e0 [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/core/src/panicking.rs:72:14 [INFO] [stderr] 16: 0x56446a8048b4 - core::panicking::panic_display::h9c09a50f7f77d52b [INFO] [stderr] 17: 0x56446a804dee - build_script_build::main::h5806847a27f12deb [INFO] [stderr] 18: 0x56446a804363 - core::ops::function::FnOnce::call_once::hbc768af78541e34f [INFO] [stderr] 19: 0x56446a8034e6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h6fb1182ee2fb61b8 [INFO] [stderr] 20: 0x56446a803f69 - std::rt::lang_start::{{closure}}::h1b87613703d94af9 [INFO] [stderr] 21: 0x56446a81b021 - core::ops::function::impls:: for &F>::call_once::hf24a18568366726b [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/core/src/ops/function.rs:284:13 [INFO] [stderr] 22: 0x56446a81b021 - std::panicking::try::do_call::hfe98fb6a5c700fa1 [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:553:40 [INFO] [stderr] 23: 0x56446a81b021 - std::panicking::try::h887aaa509ba266ad [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:517:19 [INFO] [stderr] 24: 0x56446a81b021 - std::panic::catch_unwind::hdb24f00ea5a307a8 [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panic.rs:146:14 [INFO] [stderr] 25: 0x56446a81b021 - std::rt::lang_start_internal::{{closure}}::hacbffc0b2f55d28c [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/rt.rs:148:48 [INFO] [stderr] 26: 0x56446a81b021 - std::panicking::try::do_call::hc810c59098be8c17 [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:553:40 [INFO] [stderr] 27: 0x56446a81b021 - std::panicking::try::h0d072b82be5f3f03 [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panicking.rs:517:19 [INFO] [stderr] 28: 0x56446a81b021 - std::panic::catch_unwind::hb0e7e36556665803 [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/panic.rs:146:14 [INFO] [stderr] 29: 0x56446a81b021 - std::rt::lang_start_internal::h4207974af80a0725 [INFO] [stderr] at /rustc/af4a5a13a15fa0c60e06321077ef452f769b42fd/library/std/src/rt.rs:148:20 [INFO] [stderr] 30: 0x56446a803f47 - std::rt::lang_start::h4cecad311bc24ef8 [INFO] [stderr] 31: 0x56446a804e15 - main [INFO] [stderr] 32: 0x7ff9a8610d90 - [INFO] [stderr] 33: 0x7ff9a8610e40 - __libc_start_main [INFO] [stderr] 34: 0x56446a803175 - _start [INFO] [stderr] 35: 0x0 - [INFO] running `Command { std: "docker" "inspect" "1768979d4fcda11c8d2c79e0eacd9bd026da7937b20eea4ff9caeb6d0602ce7d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "1768979d4fcda11c8d2c79e0eacd9bd026da7937b20eea4ff9caeb6d0602ce7d", kill_on_drop: false }` [INFO] [stdout] 1768979d4fcda11c8d2c79e0eacd9bd026da7937b20eea4ff9caeb6d0602ce7d [INFO] checking Ninja-21-dev/Rust-Koans against try#36dbcaee1a55543dfc181be52a69d99ff46ff62f for pr-122960-3 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FNinja-21-dev%2FRust-Koans" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/Ninja-21-dev/Rust-Koans on toolchain 36dbcaee1a55543dfc181be52a69d99ff46ff62f [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/Ninja-21-dev/Rust-Koans [INFO] finished tweaking git repo https://github.com/Ninja-21-dev/Rust-Koans [INFO] tweaked toml for git repo https://github.com/Ninja-21-dev/Rust-Koans written to /workspace/builds/worker-4-tc2/source/Cargo.toml [INFO] crate git repo https://github.com/Ninja-21-dev/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" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] c5ea03fd00d2c76c7b9fc581d2f81a35f8eff5012a8d9857a55f1653b34e085c [INFO] running `Command { std: "docker" "start" "-a" "c5ea03fd00d2c76c7b9fc581d2f81a35f8eff5012a8d9857a55f1653b34e085c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "c5ea03fd00d2c76c7b9fc581d2f81a35f8eff5012a8d9857a55f1653b34e085c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "c5ea03fd00d2c76c7b9fc581d2f81a35f8eff5012a8d9857a55f1653b34e085c", kill_on_drop: false }` [INFO] [stdout] c5ea03fd00d2c76c7b9fc581d2f81a35f8eff5012a8d9857a55f1653b34e085c [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+36dbcaee1a55543dfc181be52a69d99ff46ff62f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 6ba455848eb133d5afeefc4e1dd4a5117373905dc504fe2c8a8b35a7e46e9178 [INFO] running `Command { std: "docker" "start" "-a" "6ba455848eb133d5afeefc4e1dd4a5117373905dc504fe2c8a8b35a7e46e9178", kill_on_drop: false }` [INFO] [stderr] Copying to /tmp/fixit [INFO] [stderr] no edition found in manifest, probably 2015, skipping [INFO] running `Command { std: "docker" "inspect" "6ba455848eb133d5afeefc4e1dd4a5117373905dc504fe2c8a8b35a7e46e9178", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "6ba455848eb133d5afeefc4e1dd4a5117373905dc504fe2c8a8b35a7e46e9178", kill_on_drop: false }` [INFO] [stdout] 6ba455848eb133d5afeefc4e1dd4a5117373905dc504fe2c8a8b35a7e46e9178