[INFO] cloning repository https://github.com/adrylain/montyhallrust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/adrylain/montyhallrust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadrylain%2Fmontyhallrust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadrylain%2Fmontyhallrust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 36087f482f3d55bce81c2f7c124444ff335b286b
[INFO] checking adrylain/montyhallrust against try#c3491e21996dc67a8e37d9e5e74ed156563e9854 for pr-101345
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fadrylain%2Fmontyhallrust" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/adrylain/montyhallrust on toolchain c3491e21996dc67a8e37d9e5e74ed156563e9854
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c3491e21996dc67a8e37d9e5e74ed156563e9854" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/adrylain/montyhallrust
[INFO] finished tweaking git repo https://github.com/adrylain/montyhallrust
[INFO] tweaked toml for git repo https://github.com/adrylain/montyhallrust written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/adrylain/montyhallrust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+c3491e21996dc67a8e37d9e5e74ed156563e9854" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+c3491e21996dc67a8e37d9e5e74ed156563e9854" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e3a9c9d03c245ee1fbda2b000a3b1c1e04df193bd4421260d7e51a55afa22ee
[INFO] running `Command { std: "docker" "start" "-a" "6e3a9c9d03c245ee1fbda2b000a3b1c1e04df193bd4421260d7e51a55afa22ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e3a9c9d03c245ee1fbda2b000a3b1c1e04df193bd4421260d7e51a55afa22ee", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e3a9c9d03c245ee1fbda2b000a3b1c1e04df193bd4421260d7e51a55afa22ee", kill_on_drop: false }`
[INFO] [stdout] 6e3a9c9d03c245ee1fbda2b000a3b1c1e04df193bd4421260d7e51a55afa22ee
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+c3491e21996dc67a8e37d9e5e74ed156563e9854" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d567b978cf744f6c37a677fa1881b4474f130e6c13dc4c7f3e767b073c2b292c
[INFO] running `Command { std: "docker" "start" "-a" "d567b978cf744f6c37a677fa1881b4474f130e6c13dc4c7f3e767b073c2b292c", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling getrandom v0.1.15
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr] error: failed to run custom build command for `libc v0.2.81`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/libc-58f77c64520d538c/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-0.2.81/build.rs:7:31
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55b1b4939990 - std::backtrace_rs::backtrace::libunwind::trace::h6176bf60b78d74d6
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      1:     0x55b1b4939990 - std::backtrace_rs::backtrace::trace_unsynchronized::h5d22932bd33ba306
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55b1b4939990 - std::sys_common::backtrace::_print_fmt::h91ed71259c388db3
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/sys_common/backtrace.rs:66:5
[INFO] [stderr]      3:     0x55b1b4939990 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hde15bb8cbf7665da
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/sys_common/backtrace.rs:45:22
[INFO] [stderr]      4:     0x55b1b4956b2e - core::fmt::write::h9761a5598d7cc269
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/core/src/fmt/mod.rs:1202:17
[INFO] [stderr]      5:     0x55b1b4936c45 - std::io::Write::write_fmt::h26becaaa3f318825
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/io/mod.rs:1679:15
[INFO] [stderr]      6:     0x55b1b493b0c3 - std::sys_common::backtrace::_print::hc10fefd61e366dd2
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/sys_common/backtrace.rs:48:5
[INFO] [stderr]      7:     0x55b1b493b0c3 - std::sys_common::backtrace::print::hd8c846072a354bbf
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/sys_common/backtrace.rs:35:9
[INFO] [stderr]      8:     0x55b1b493b0c3 - std::panicking::default_hook::{{closure}}::haa135eeb0555cd8c
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panicking.rs:295:22
[INFO] [stderr]      9:     0x55b1b493adaf - std::panicking::default_hook::h962e5f45e4e85804
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panicking.rs:314:9
[INFO] [stderr]     10:     0x55b1b493b76a - std::panicking::rust_panic_with_hook::h26097f8ccbe406f2
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panicking.rs:698:17
[INFO] [stderr]     11:     0x55b1b493b667 - std::panicking::begin_panic_handler::{{closure}}::hc0f865aa1bb60c7c
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panicking.rs:588:13
[INFO] [stderr]     12:     0x55b1b4939eac - std::sys_common::backtrace::__rust_end_short_backtrace::h6d4dc99be6f721b8
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/sys_common/backtrace.rs:138:18
[INFO] [stderr]     13:     0x55b1b493b382 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panicking.rs:584:5
[INFO] [stderr]     14:     0x55b1b49149c3 - core::panicking::panic_fmt::h4db8cd7388285b2c
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/core/src/panicking.rs:142:14
[INFO] [stderr]     15:     0x55b1b4955dd1 - core::panicking::panic_display::he73fdc935bdf497e
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/core/src/panicking.rs:72:5
[INFO] [stderr]     16:     0x55b1b4955d7b - core::panicking::panic_str::hb5cde10995c7cdaf
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/core/src/panicking.rs:56:5
[INFO] [stderr]     17:     0x55b1b4914836 - core::option::expect_failed::h659f87154acb3c68
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/core/src/option.rs:1880:5
[INFO] [stderr]     18:     0x55b1b49166d2 - core::option::Option<T>::expect::h74a9e4c88c34d551
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/core/src/option.rs:738:21
[INFO] [stderr]     19:     0x55b1b491c8d7 - build_script_build::main::h667eca2ef8824fe8
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.81/build.rs:7:9
[INFO] [stderr]     20:     0x55b1b491e8ab - core::ops::function::FnOnce::call_once::h29a5f57a0a387f12
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/core/src/ops/function.rs:248:5
[INFO] [stderr]     21:     0x55b1b491e5be - std::sys_common::backtrace::__rust_begin_short_backtrace::hb07d3209a6eed3d9
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/sys_common/backtrace.rs:122:18
[INFO] [stderr]     22:     0x55b1b4918821 - std::rt::lang_start::{{closure}}::h50bd12f0be6b0979
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/rt.rs:166:18
[INFO] [stderr]     23:     0x55b1b493426f - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::he95ed81489502271
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/core/src/ops/function.rs:280:13
[INFO] [stderr]     24:     0x55b1b493426f - std::panicking::try::do_call::h0a45e27c5ac7207a
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panicking.rs:492:40
[INFO] [stderr]     25:     0x55b1b493426f - std::panicking::try::h032b7145e06b96dd
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panicking.rs:456:19
[INFO] [stderr]     26:     0x55b1b493426f - std::panic::catch_unwind::hcb3762214531769d
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panic.rs:137:14
[INFO] [stderr]     27:     0x55b1b493426f - std::rt::lang_start_internal::{{closure}}::h49ed99b9e279c5c0
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/rt.rs:148:48
[INFO] [stderr]     28:     0x55b1b493426f - std::panicking::try::do_call::hd4e312809bc805d8
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panicking.rs:492:40
[INFO] [stderr]     29:     0x55b1b493426f - std::panicking::try::hdb45bd293875ea13
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panicking.rs:456:19
[INFO] [stderr]     30:     0x55b1b493426f - std::panic::catch_unwind::h429997a205aa583a
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/panic.rs:137:14
[INFO] [stderr]     31:     0x55b1b493426f - std::rt::lang_start_internal::hc8c7091d7b5a3029
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/rt.rs:148:20
[INFO] [stderr]     32:     0x55b1b49187fa - std::rt::lang_start::h93299b1bca886793
[INFO] [stderr]                                  at /rustc/c3491e21996dc67a8e37d9e5e74ed156563e9854/library/std/src/rt.rs:165:17
[INFO] [stderr]     33:     0x55b1b491ddb1 - main
[INFO] [stderr]     34:     0x7f3a612b5083 - __libc_start_main
[INFO] [stderr]     35:     0x55b1b4914bbe - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "d567b978cf744f6c37a677fa1881b4474f130e6c13dc4c7f3e767b073c2b292c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d567b978cf744f6c37a677fa1881b4474f130e6c13dc4c7f3e767b073c2b292c", kill_on_drop: false }`
[INFO] [stdout] d567b978cf744f6c37a677fa1881b4474f130e6c13dc4c7f3e767b073c2b292c