[INFO] cloning repository https://github.com/abdulbugti1/rust_guessing_game
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/abdulbugti1/rust_guessing_game" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabdulbugti1%2Frust_guessing_game", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabdulbugti1%2Frust_guessing_game'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] fecccd54de88f83b45125ebedd09f78776ae9c47
[INFO] checking abdulbugti1/rust_guessing_game against try#388b725dea7416978ab58ab1f908139d530308a7 for pr-99943
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fabdulbugti1%2Frust_guessing_game" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/abdulbugti1/rust_guessing_game on toolchain 388b725dea7416978ab58ab1f908139d530308a7
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+388b725dea7416978ab58ab1f908139d530308a7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/abdulbugti1/rust_guessing_game
[INFO] finished tweaking git repo https://github.com/abdulbugti1/rust_guessing_game
[INFO] tweaked toml for git repo https://github.com/abdulbugti1/rust_guessing_game written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/abdulbugti1/rust_guessing_game already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+388b725dea7416978ab58ab1f908139d530308a7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+388b725dea7416978ab58ab1f908139d530308a7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5dcbba3f2f66752966fc56f4ab47e4c8cf144c44945a989d14b0de144d4221c5
[INFO] running `Command { std: "docker" "start" "-a" "5dcbba3f2f66752966fc56f4ab47e4c8cf144c44945a989d14b0de144d4221c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5dcbba3f2f66752966fc56f4ab47e4c8cf144c44945a989d14b0de144d4221c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5dcbba3f2f66752966fc56f4ab47e4c8cf144c44945a989d14b0de144d4221c5", kill_on_drop: false }`
[INFO] [stdout] 5dcbba3f2f66752966fc56f4ab47e4c8cf144c44945a989d14b0de144d4221c5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:3d1cd00eb6e6ea2a7969240779edeaeff35b24be85036c63b883ba933028a15f" "/opt/rustwide/cargo-home/bin/cargo" "+388b725dea7416978ab58ab1f908139d530308a7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b0394e5b1fe98a2bdfa40b89973ccd2a4486a7e990e19ccfcb8cdc31e7ab0f7e
[INFO] running `Command { std: "docker" "start" "-a" "b0394e5b1fe98a2bdfa40b89973ccd2a4486a7e990e19ccfcb8cdc31e7ab0f7e", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.92
[INFO] [stderr]     Checking rand_core v0.4.2
[INFO] [stderr]     Checking rand_core v0.3.1
[INFO] [stderr] error: failed to run custom build command for `libc v0.2.92`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/libc-026a14416b62dd3a/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'Failed to get rustc version', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.92/build.rs:7:31
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x565461d137c0 - std::backtrace_rs::backtrace::libunwind::trace::hc291403ee708aa9d
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      1:     0x565461d137c0 - std::backtrace_rs::backtrace::trace_unsynchronized::h760224b5bffe76c3
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x565461d137c0 - std::sys_common::backtrace::_print_fmt::hd490fcde0a3421f8
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/sys_common/backtrace.rs:66:5
[INFO] [stderr]      3:     0x565461d137c0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h520137f6f6087f73
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/sys_common/backtrace.rs:45:22
[INFO] [stderr]      4:     0x565461d3097e - core::fmt::write::ha64f0480f5625ee4
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/core/src/fmt/mod.rs:1209:17
[INFO] [stderr]      5:     0x565461d10a85 - std::io::Write::write_fmt::h07c8cdce5e276981
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/io/mod.rs:1679:15
[INFO] [stderr]      6:     0x565461d14e53 - std::sys_common::backtrace::_print::h3f5685085b4e1cf2
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/sys_common/backtrace.rs:48:5
[INFO] [stderr]      7:     0x565461d14e53 - std::sys_common::backtrace::print::ha1967f26ae823009
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/sys_common/backtrace.rs:35:9
[INFO] [stderr]      8:     0x565461d14e53 - std::panicking::default_hook::{{closure}}::h6c36fb184dbda23e
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/panicking.rs:267:22
[INFO] [stderr]      9:     0x565461d14b2a - std::panicking::default_hook::ha47c99598c3e66ef
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/panicking.rs:286:9
[INFO] [stderr]     10:     0x565461d154f9 - std::panicking::rust_panic_with_hook::hf4220eb19daaad2e
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/panicking.rs:669:13
[INFO] [stderr]     11:     0x565461d153f7 - std::panicking::begin_panic_handler::{{closure}}::h31c1f9f91cf5593e
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/panicking.rs:560:13
[INFO] [stderr]     12:     0x565461d13c6c - std::sys_common::backtrace::__rust_end_short_backtrace::hbcd5040fa1aed4d8
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/sys_common/backtrace.rs:138:18
[INFO] [stderr]     13:     0x565461d15112 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/panicking.rs:556:5
[INFO] [stderr]     14:     0x565461ceab43 - core::panicking::panic_fmt::he926e27f85db5422
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/core/src/panicking.rs:142:14
[INFO] [stderr]     15:     0x565461d2fc21 - core::panicking::panic_display::h75abb4c900ab75f2
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/core/src/panicking.rs:72:5
[INFO] [stderr]     16:     0x565461d2fbcb - core::panicking::panic_str::hfb7381e557d267e7
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/core/src/panicking.rs:56:5
[INFO] [stderr]     17:     0x565461cea9b6 - core::option::expect_failed::h494c32649062b1eb
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/core/src/option.rs:1873:5
[INFO] [stderr]     18:     0x565461cee0b2 - core::option::Option<T>::expect::hb8e7d77e5f887873
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/core/src/option.rs:738:21
[INFO] [stderr]     19:     0x565461cf5477 - build_script_build::main::h437b78609cf36455
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.92/build.rs:7:9
[INFO] [stderr]     20:     0x565461ceee8b - core::ops::function::FnOnce::call_once::h0fbafb8d9b1bbc15
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/core/src/ops/function.rs:510:5
[INFO] [stderr]     21:     0x565461cedabe - std::sys_common::backtrace::__rust_begin_short_backtrace::h4053e210a6f12bc6
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/sys_common/backtrace.rs:122:18
[INFO] [stderr]     22:     0x565461cf4b81 - std::rt::lang_start::{{closure}}::hff741bdc77bc63a1
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/rt.rs:166:18
[INFO] [stderr]     23:     0x565461d0dfbf - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hf19e9c3abffad535
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/core/src/ops/function.rs:606:13
[INFO] [stderr]     24:     0x565461d0dfbf - std::panicking::try::do_call::h1375505a5c13a7cd
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/panicking.rs:464:40
[INFO] [stderr]     25:     0x565461d0dfbf - std::panicking::try::h9802b02699c00b42
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/panicking.rs:428:19
[INFO] [stderr]     26:     0x565461d0dfbf - std::panic::catch_unwind::hda116a5f00b8ca30
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/panic.rs:137:14
[INFO] [stderr]     27:     0x565461d0dfbf - std::rt::lang_start_internal::{{closure}}::h43418b1565142d47
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/rt.rs:148:48
[INFO] [stderr]     28:     0x565461d0dfbf - std::panicking::try::do_call::h67406d4e5a9f45f7
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/panicking.rs:464:40
[INFO] [stderr]     29:     0x565461d0dfbf - std::panicking::try::ha362d204fbce7ce6
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/panicking.rs:428:19
[INFO] [stderr]     30:     0x565461d0dfbf - std::panic::catch_unwind::h41066aa5d4f2fc32
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/panic.rs:137:14
[INFO] [stderr]     31:     0x565461d0dfbf - std::rt::lang_start_internal::hbc40ef0378be60f8
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/rt.rs:148:20
[INFO] [stderr]     32:     0x565461cf4b5a - std::rt::lang_start::ha3d479c1bb81d25e
[INFO] [stderr]                                  at /rustc/388b725dea7416978ab58ab1f908139d530308a7/library/std/src/rt.rs:165:17
[INFO] [stderr]     33:     0x565461cf6ad1 - main
[INFO] [stderr]     34:     0x7fa45bccb083 - __libc_start_main
[INFO] [stderr]     35:     0x565461cead1e - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "b0394e5b1fe98a2bdfa40b89973ccd2a4486a7e990e19ccfcb8cdc31e7ab0f7e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b0394e5b1fe98a2bdfa40b89973ccd2a4486a7e990e19ccfcb8cdc31e7ab0f7e", kill_on_drop: false }`
[INFO] [stdout] b0394e5b1fe98a2bdfa40b89973ccd2a4486a7e990e19ccfcb8cdc31e7ab0f7e