[INFO] cloning repository https://github.com/crazymykl/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/crazymykl/rust-koans" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrazymykl%2Frust-koans", kill_on_drop: false }` [INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrazymykl%2Frust-koans'... [INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }` [INFO] [stdout] e427bb720403f90dece0e298c50d536ed2fe4f6c [INFO] checking crazymykl/rust-koans against try#b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b for pr-82781 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcrazymykl%2Frust-koans" "/workspace/builds/worker-8/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/crazymykl/rust-koans on toolchain b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }` [INFO] started tweaking git repo https://github.com/crazymykl/rust-koans [INFO] finished tweaking git repo https://github.com/crazymykl/rust-koans [INFO] tweaked toml for git repo https://github.com/crazymykl/rust-koans written to /workspace/builds/worker-8/source/Cargo.toml [INFO] crate git repo https://github.com/crazymykl/rust-koans already has a lockfile, it will not be regenerated [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] a7dfbe58c06284995159f9332b07692e5bbb933d56e56bb999ad3129c044f4bd [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "a7dfbe58c06284995159f9332b07692e5bbb933d56e56bb999ad3129c044f4bd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "a7dfbe58c06284995159f9332b07692e5bbb933d56e56bb999ad3129c044f4bd", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "a7dfbe58c06284995159f9332b07692e5bbb933d56e56bb999ad3129c044f4bd", kill_on_drop: false }` [INFO] [stdout] a7dfbe58c06284995159f9332b07692e5bbb933d56e56bb999ad3129c044f4bd [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }` [INFO] [stdout] 06518a83bf58c1d322d62f1237e719011eb831314d192e562d4533b47ba560c3 [INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap. [INFO] running `Command { std: "docker" "start" "-a" "06518a83bf58c1d322d62f1237e719011eb831314d192e562d4533b47ba560c3", 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] [INFO] [stderr] Caused by: [INFO] [stderr] process didn't exit successfully: `/opt/rustwide/target/debug/build/koans-00151bcc999dc4c4/build-script-build` (exit code: 101) [INFO] [stderr] --- stderr [INFO] [stderr] thread 'main' panicked at 'Read-only file system (os error 30)', build.rs:13:22 [INFO] [stderr] stack backtrace: [INFO] [stderr] 0: 0x5611bfe18780 - std::backtrace_rs::backtrace::libunwind::trace::hfe3b1cace85e87d8 [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5 [INFO] [stderr] 1: 0x5611bfe18780 - std::backtrace_rs::backtrace::trace_unsynchronized::h542330af06479043 [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5 [INFO] [stderr] 2: 0x5611bfe18780 - std::sys_common::backtrace::_print_fmt::h6b88726367858985 [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/sys_common/backtrace.rs:67:5 [INFO] [stderr] 3: 0x5611bfe18780 - ::fmt::hcd76ce6b485adbea [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/sys_common/backtrace.rs:46:22 [INFO] [stderr] 4: 0x5611bfe2e9df - core::fmt::write::h127419eb46f2ecc9 [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/core/src/fmt/mod.rs:1092:17 [INFO] [stderr] 5: 0x5611bfe17222 - std::io::Write::write_fmt::h0facb64ef2e7f5d8 [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/io/mod.rs:1567:15 [INFO] [stderr] 6: 0x5611bfe1a2f5 - std::sys_common::backtrace::_print::h7bf1633ea5421f7b [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/sys_common/backtrace.rs:49:5 [INFO] [stderr] 7: 0x5611bfe1a2f5 - std::sys_common::backtrace::print::h5cc4d09049928ba5 [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/sys_common/backtrace.rs:36:9 [INFO] [stderr] 8: 0x5611bfe1a2f5 - std::panicking::default_hook::{{closure}}::h9e84dc005bfc9fc7 [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/panicking.rs:208:50 [INFO] [stderr] 9: 0x5611bfe19da3 - std::panicking::default_hook::h123278a03b1f796b [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/panicking.rs:225:9 [INFO] [stderr] 10: 0x5611bfe1a8fd - std::panicking::rust_panic_with_hook::h4040631aa6c7bc27 [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/panicking.rs:591:17 [INFO] [stderr] 11: 0x5611bfe1a497 - std::panicking::begin_panic_handler::{{closure}}::h02a17b22ac092d08 [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/panicking.rs:497:13 [INFO] [stderr] 12: 0x5611bfe18c3c - std::sys_common::backtrace::__rust_end_short_backtrace::h6063b024443b5852 [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/sys_common/backtrace.rs:141:18 [INFO] [stderr] 13: 0x5611bfe1a3f9 - rust_begin_unwind [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/panicking.rs:493:5 [INFO] [stderr] 14: 0x5611bfdffe3b - std::panicking::begin_panic_fmt::h10b51f96d6207ff1 [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/panicking.rs:435:5 [INFO] [stderr] 15: 0x5611bfe03b09 - build_script_build::main::h766106beda060f1b [INFO] [stderr] at /opt/rustwide/workdir/build.rs:13:22 [INFO] [stderr] 16: 0x5611bfe03d0b - core::ops::function::FnOnce::call_once::h2c11611025ed4809 [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/core/src/ops/function.rs:227:5 [INFO] [stderr] 17: 0x5611bfe01e8e - std::sys_common::backtrace::__rust_begin_short_backtrace::h0538e2e9509e5c29 [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/sys_common/backtrace.rs:125:18 [INFO] [stderr] 18: 0x5611bfe04641 - std::rt::lang_start::{{closure}}::h88c55bd28793fb1b [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/rt.rs:66:18 [INFO] [stderr] 19: 0x5611bfe1acfa - core::ops::function::impls:: for &F>::call_once::h3695a3fbbe44c001 [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/core/src/ops/function.rs:259:13 [INFO] [stderr] 20: 0x5611bfe1acfa - std::panicking::try::do_call::he9f4b5f706c7e58d [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/panicking.rs:379:40 [INFO] [stderr] 21: 0x5611bfe1acfa - std::panicking::try::h789d448ccf87fe6d [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/panicking.rs:343:19 [INFO] [stderr] 22: 0x5611bfe1acfa - std::panic::catch_unwind::h7a6b31f16004913a [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/panic.rs:431:14 [INFO] [stderr] 23: 0x5611bfe1acfa - std::rt::lang_start_internal::h80897b41b254b288 [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/rt.rs:51:25 [INFO] [stderr] 24: 0x5611bfe04620 - std::rt::lang_start::hdcd121adc2ba8fdf [INFO] [stderr] at /rustc/b09a3e9a7a0ff7efb269ec0c13dcc0fd3cedcf6b/library/std/src/rt.rs:65:5 [INFO] [stderr] 25: 0x5611bfe03c0c - main [INFO] [stderr] 26: 0x7ff986b7c0b3 - __libc_start_main [INFO] [stderr] 27: 0x5611bfe007be - _start [INFO] [stderr] 28: 0x0 - [INFO] running `Command { std: "docker" "inspect" "06518a83bf58c1d322d62f1237e719011eb831314d192e562d4533b47ba560c3", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "06518a83bf58c1d322d62f1237e719011eb831314d192e562d4533b47ba560c3", kill_on_drop: false }` [INFO] [stdout] 06518a83bf58c1d322d62f1237e719011eb831314d192e562d4533b47ba560c3