[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] building meganriley/rust-koans against master#d59f06fc64844ec2073e5e888f7470989ef25ff9 for pr-119440 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmeganriley%2Frust-koans" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/meganriley/rust-koans on toolchain d59f06fc64844ec2073e5e888f7470989ef25ff9 [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+d59f06fc64844ec2073e5e888f7470989ef25ff9" "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-1-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" "+d59f06fc64844ec2073e5e888f7470989ef25ff9" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [ERROR] this task or one of its parent failed! [ERROR] no output for 300 seconds [ERROR] note: run with `RUST_BACKTRACE=1` to display a backtrace. [INFO] building meganriley/rust-koans against try#fe8f664b41f030f307cfeb6cb8c3a1419292aeed for pr-119440 [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] validating manifest of git repo https://github.com/meganriley/rust-koans on toolchain fe8f664b41f030f307cfeb6cb8c3a1419292aeed [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fe8f664b41f030f307cfeb6cb8c3a1419292aeed" "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-1-tc2/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" "+fe8f664b41f030f307cfeb6cb8c3a1419292aeed" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [INFO] [stderr] Blocking waiting for file lock on package cache [ERROR] error running command: no output for 300 seconds [INFO] building meganriley/rust-koans against try#fe8f664b41f030f307cfeb6cb8c3a1419292aeed for pr-119440 [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] validating manifest of git repo https://github.com/meganriley/rust-koans on toolchain fe8f664b41f030f307cfeb6cb8c3a1419292aeed [INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+fe8f664b41f030f307cfeb6cb8c3a1419292aeed" "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-1-tc2/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" "+fe8f664b41f030f307cfeb6cb8c3a1419292aeed" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+fe8f664b41f030f307cfeb6cb8c3a1419292aeed" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] 37b01f75ed594eb052a10f7484775e28539e37bb39161a2f285f0a73cac0ee1d [INFO] running `Command { std: "docker" "start" "-a" "37b01f75ed594eb052a10f7484775e28539e37bb39161a2f285f0a73cac0ee1d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "37b01f75ed594eb052a10f7484775e28539e37bb39161a2f285f0a73cac0ee1d", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "37b01f75ed594eb052a10f7484775e28539e37bb39161a2f285f0a73cac0ee1d", kill_on_drop: false }` [INFO] [stdout] 37b01f75ed594eb052a10f7484775e28539e37bb39161a2f285f0a73cac0ee1d [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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+fe8f664b41f030f307cfeb6cb8c3a1419292aeed" "build" "--frozen" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 108964f4a487fa0a8932c4263315eb6d50eda544d9afd5a58008bf38ccdfab0c [INFO] running `Command { std: "docker" "start" "-a" "108964f4a487fa0a8932c4263315eb6d50eda544d9afd5a58008bf38ccdfab0c", 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: 0x56078409dbb6 - std::backtrace_rs::backtrace::libunwind::trace::h5f2f9ef1f20601b2 [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/../../backtrace/src/backtrace/libunwind.rs:104:5 [INFO] [stderr] 1: 0x56078409dbb6 - std::backtrace_rs::backtrace::trace_unsynchronized::h0afa123c60ac3544 [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x56078409dbb6 - std::sys_common::backtrace::_print_fmt::h6bf637b081885c8e [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/sys_common/backtrace.rs:68:5 [INFO] [stderr] 3: 0x56078409dbb6 - ::fmt::h2c6761a2e200c979 [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/sys_common/backtrace.rs:44:22 [INFO] [stderr] 4: 0x5607840bc510 - core::fmt::rt::Argument::fmt::h16857210251b8080 [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/core/src/fmt/rt.rs:142:9 [INFO] [stderr] 5: 0x5607840bc510 - core::fmt::write::h15e31c36c28ee02f [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/core/src/fmt/mod.rs:1120:17 [INFO] [stderr] 6: 0x56078409bdef - std::io::Write::write_fmt::h30eda9caba94b19c [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/io/mod.rs:1810:15 [INFO] [stderr] 7: 0x56078409d994 - std::sys_common::backtrace::_print::h83083a5d53637ec4 [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/sys_common/backtrace.rs:47:5 [INFO] [stderr] 8: 0x56078409d994 - std::sys_common::backtrace::print::hc98591726bef92fd [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/sys_common/backtrace.rs:34:9 [INFO] [stderr] 9: 0x56078409eef7 - std::panicking::default_hook::{{closure}}::hc8badbdd77cc4572 [INFO] [stderr] 10: 0x56078409ec59 - std::panicking::default_hook::ha24461576e8ae120 [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/panicking.rs:292:9 [INFO] [stderr] 11: 0x56078409f388 - std::panicking::rust_panic_with_hook::hed55d523c6a2382e [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/panicking.rs:779:13 [INFO] [stderr] 12: 0x56078409f262 - std::panicking::begin_panic_handler::{{closure}}::h944452fa41308f37 [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/panicking.rs:657:13 [INFO] [stderr] 13: 0x56078409e0b6 - std::sys_common::backtrace::__rust_end_short_backtrace::h91d397e41fb21da0 [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/sys_common/backtrace.rs:171:18 [INFO] [stderr] 14: 0x56078409efc0 - rust_begin_unwind [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/panicking.rs:645:5 [INFO] [stderr] 15: 0x560784080df5 - core::panicking::panic_fmt::he0a5a6033f24be27 [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/core/src/panicking.rs:72:14 [INFO] [stderr] 16: 0x560784082af5 - core::panicking::panic_display::h236d86dc0efd1d50 [INFO] [stderr] 17: 0x560784082ef1 - build_script_build::main::h66151af3f0ba2466 [INFO] [stderr] 18: 0x5607840825a3 - core::ops::function::FnOnce::call_once::h71a6d33ee865d311 [INFO] [stderr] 19: 0x5607840816a6 - std::sys_common::backtrace::__rust_begin_short_backtrace::h37d1cb1b6e63d022 [INFO] [stderr] 20: 0x560784082189 - std::rt::lang_start::{{closure}}::hdf954d2948a49fd7 [INFO] [stderr] 21: 0x5607840998b1 - core::ops::function::impls:: for &F>::call_once::he183615f2bf1ea96 [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/core/src/ops/function.rs:284:13 [INFO] [stderr] 22: 0x5607840998b1 - std::panicking::try::do_call::h79f14cfd8b537c5c [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/panicking.rs:552:40 [INFO] [stderr] 23: 0x5607840998b1 - std::panicking::try::h902dfe1ecc29aa05 [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/panicking.rs:516:19 [INFO] [stderr] 24: 0x5607840998b1 - std::panic::catch_unwind::h660ab2b0044f05d0 [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/panic.rs:142:14 [INFO] [stderr] 25: 0x5607840998b1 - std::rt::lang_start_internal::{{closure}}::h1c3a5cb3528a3235 [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/rt.rs:148:48 [INFO] [stderr] 26: 0x5607840998b1 - std::panicking::try::do_call::h2050f11a34952735 [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/panicking.rs:552:40 [INFO] [stderr] 27: 0x5607840998b1 - std::panicking::try::h63eb07a54ff5cec6 [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/panicking.rs:516:19 [INFO] [stderr] 28: 0x5607840998b1 - std::panic::catch_unwind::hca8dd76cfaee9b9a [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/panic.rs:142:14 [INFO] [stderr] 29: 0x5607840998b1 - std::rt::lang_start_internal::h92bcc63936c7ab9c [INFO] [stderr] at /rustc/fe8f664b41f030f307cfeb6cb8c3a1419292aeed/library/std/src/rt.rs:148:20 [INFO] [stderr] 30: 0x560784082167 - std::rt::lang_start::hf391202a38a7a550 [INFO] [stderr] 31: 0x560784082f15 - main [INFO] [stderr] 32: 0x7f2b84fddd90 - [INFO] [stderr] 33: 0x7f2b84fdde40 - __libc_start_main [INFO] [stderr] 34: 0x560784081525 - _start [INFO] [stderr] 35: 0x0 - [INFO] running `Command { std: "docker" "inspect" "108964f4a487fa0a8932c4263315eb6d50eda544d9afd5a58008bf38ccdfab0c", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "108964f4a487fa0a8932c4263315eb6d50eda544d9afd5a58008bf38ccdfab0c", kill_on_drop: false }` [INFO] [stdout] 108964f4a487fa0a8932c4263315eb6d50eda544d9afd5a58008bf38ccdfab0c