[INFO] cloning repository https://github.com/grihabor/sudoku_rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/grihabor/sudoku_rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrihabor%2Fsudoku_rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrihabor%2Fsudoku_rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] c5aae0af9fbdf6a1790e0b5d4e82e312606cd3bd
[INFO] checking grihabor/sudoku_rust against try#8d46be77cd48fdbcced888d027457e2c9cf2aa16 for pr-142723
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fgrihabor%2Fsudoku_rust" "/workspace/builds/worker-5-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/grihabor/sudoku_rust on toolchain 8d46be77cd48fdbcced888d027457e2c9cf2aa16
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/grihabor/sudoku_rust
[INFO] finished tweaking git repo https://github.com/grihabor/sudoku_rust
[INFO] tweaked toml for git repo https://github.com/grihabor/sudoku_rust written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/grihabor/sudoku_rust 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" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fb0b9d050acc9db8cda89fd7d847a52aa7faa90ca3a3da0ba5e3eae655a102e9
[INFO] running `Command { std: "docker" "start" "-a" "fb0b9d050acc9db8cda89fd7d847a52aa7faa90ca3a3da0ba5e3eae655a102e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fb0b9d050acc9db8cda89fd7d847a52aa7faa90ca3a3da0ba5e3eae655a102e9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fb0b9d050acc9db8cda89fd7d847a52aa7faa90ca3a3da0ba5e3eae655a102e9", kill_on_drop: false }`
[INFO] [stdout] fb0b9d050acc9db8cda89fd7d847a52aa7faa90ca3a3da0ba5e3eae655a102e9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8d46be77cd48fdbcced888d027457e2c9cf2aa16" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3ce276ef237db1aa2908af255d4d00ebbbc5e93322528899c1bf4d1fd806380e
[INFO] running `Command { std: "docker" "start" "-a" "3ce276ef237db1aa2908af255d4d00ebbbc5e93322528899c1bf4d1fd806380e", kill_on_drop: false }`
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling regex v0.2.11
[INFO] [stderr]    Compiling ucd-util v0.1.8
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.5
[INFO] [stderr]    Compiling serde v1.0.137
[INFO] [stderr]    Compiling serde_json v1.0.81
[INFO] [stderr]     Checking itoa v1.0.2
[INFO] [stderr]    Compiling thread_local v0.3.6
[INFO] [stderr]     Checking ryu v1.0.10
[INFO] [stderr]    Compiling regex-syntax v0.5.6
[INFO] [stderr]    Compiling aho-corasick v0.6.10
[INFO] [stderr]    Compiling rustsourcebundler v0.9.0 (https://github.com/lpenz/rust-sourcebundler#5e57cb25)
[INFO] [stderr]    Compiling sudoku_rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `sudoku_rust v0.1.0 (/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/sudoku_rust-90b68c362738558e/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' panicked at /opt/rustwide/cargo-home/git/checkouts/rust-sourcebundler-e2048c70088e9967/5e57cb2/src/lib.rs:76:33:
[INFO] [stderr]   error creating bin/bundle.rs
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5eede89f1402 - std::backtrace_rs::backtrace::libunwind::trace::hfa06e9f63bf0a83a
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x5eede89f1402 - std::backtrace_rs::backtrace::trace_unsynchronized::h70efc93666558e57
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x5eede89f1402 - std::sys::backtrace::_print_fmt::hc7b2a59e4b7c6f59
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x5eede89f1402 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb6c331e4a1aab9b4
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x5eede8a0e583 - core::fmt::rt::Argument::fmt::h94ac5387a38069f9
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x5eede8a0e583 - core::fmt::write::hd781ad4357bb296d
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/core/src/fmt/mod.rs:1460:25
[INFO] [stderr]      6:     0x5eede89eedd3 - std::io::default_write_fmt::h25bf119100aa2ec8
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x5eede89eedd3 - std::io::Write::write_fmt::h4867718dbbdcf9ee
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x5eede89f1252 - std::sys::backtrace::BacktraceLock::print::h5d45eb20eab8a794
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x5eede89f22d2 - std::panicking::default_hook::{{closure}}::h42ad209a87b6868d
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/panicking.rs:300:27
[INFO] [stderr]     10:     0x5eede89f20d5 - std::panicking::default_hook::h85049098360665bc
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/panicking.rs:327:9
[INFO] [stderr]     11:     0x5eede89f2ca2 - std::panicking::rust_panic_with_hook::hc302aa8b04d109ba
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/panicking.rs:833:13
[INFO] [stderr]     12:     0x5eede89f2a3a - std::panicking::begin_panic_handler::{{closure}}::h0186f3bc30304ee7
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/panicking.rs:706:13
[INFO] [stderr]     13:     0x5eede89f18f9 - std::sys::backtrace::__rust_end_short_backtrace::h971f2fdfa01904c0
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/sys/backtrace.rs:168:18
[INFO] [stderr]     14:     0x5eede89f26cd - __rustc[290bc3cf94966f64]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/panicking.rs:697:5
[INFO] [stderr]     15:     0x5eede8a0d6d0 - core::panicking::panic_fmt::h647e7290c4e00148
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/core/src/panicking.rs:75:14
[INFO] [stderr]     16:     0x5eede88d3dfa - rustsourcebundler::Bundler::run::{{closure}}::h3ddab115db210c1d
[INFO] [stderr]     17:     0x5eede88ddff9 - core::result::Result<T,E>::unwrap_or_else::h68a8750c622b49ea
[INFO] [stderr]     18:     0x5eede88d3c12 - rustsourcebundler::Bundler::run::hc2313b313d126259
[INFO] [stderr]     19:     0x5eede88d1333 - build_script_build::main::h47c1341c44eb0992
[INFO] [stderr]     20:     0x5eede88d0a73 - core::ops::function::FnOnce::call_once::h9debf72a561ffa0a
[INFO] [stderr]     21:     0x5eede88d0a56 - std::sys::backtrace::__rust_begin_short_backtrace::h53ea30e53d9a8d8b
[INFO] [stderr]     22:     0x5eede88d0a39 - std::rt::lang_start::{{closure}}::hea7b9aa011819db1
[INFO] [stderr]     23:     0x5eede89ec020 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h4d341151e3209f87
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/core/src/ops/function.rs:284:21
[INFO] [stderr]     24:     0x5eede89ec020 - std::panicking::catch_unwind::do_call::hddece26cc0258a14
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/panicking.rs:589:40
[INFO] [stderr]     25:     0x5eede89ec020 - std::panicking::catch_unwind::h06771f83dee1e832
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/panicking.rs:552:19
[INFO] [stderr]     26:     0x5eede89ec020 - std::panic::catch_unwind::h73751a747c85974a
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/panic.rs:359:14
[INFO] [stderr]     27:     0x5eede89ec020 - std::rt::lang_start_internal::{{closure}}::h7c7316738abb89b8
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/rt.rs:175:24
[INFO] [stderr]     28:     0x5eede89ec020 - std::panicking::catch_unwind::do_call::h8b2cec477bbd71ae
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/panicking.rs:589:40
[INFO] [stderr]     29:     0x5eede89ec020 - std::panicking::catch_unwind::h9145629f1087e3cd
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/panicking.rs:552:19
[INFO] [stderr]     30:     0x5eede89ec020 - std::panic::catch_unwind::hf2895de5e50d8a3b
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/panic.rs:359:14
[INFO] [stderr]     31:     0x5eede89ec020 - std::rt::lang_start_internal::h969e9928e3178f3a
[INFO] [stderr]                                  at /rustc/8d46be77cd48fdbcced888d027457e2c9cf2aa16/library/std/src/rt.rs:171:5
[INFO] [stderr]     32:     0x5eede88d0a21 - std::rt::lang_start::h7bf82d138b0fff54
[INFO] [stderr]     33:     0x5eede88d1375 - main
[INFO] [stderr]     34:     0x7f0f126a61ca - <unknown>
[INFO] [stderr]     35:     0x7f0f126a628b - __libc_start_main
[INFO] [stderr]     36:     0x5eede88d0935 - _start
[INFO] [stderr]     37:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "3ce276ef237db1aa2908af255d4d00ebbbc5e93322528899c1bf4d1fd806380e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ce276ef237db1aa2908af255d4d00ebbbc5e93322528899c1bf4d1fd806380e", kill_on_drop: false }`
[INFO] [stdout] 3ce276ef237db1aa2908af255d4d00ebbbc5e93322528899c1bf4d1fd806380e