[INFO] cloning repository https://github.com/Xk0nSid/xcrond
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Xk0nSid/xcrond" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXk0nSid%2Fxcrond", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXk0nSid%2Fxcrond'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 747e366ad27f89c4841791833f2583a91ded1e12
[INFO] building Xk0nSid/xcrond against try#434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275 for pr-101591
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FXk0nSid%2Fxcrond" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Xk0nSid/xcrond on toolchain 434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Xk0nSid/xcrond
[INFO] finished tweaking git repo https://github.com/Xk0nSid/xcrond
[INFO] tweaked toml for git repo https://github.com/Xk0nSid/xcrond written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/Xk0nSid/xcrond already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275" "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-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 921230f70f1757dea63cdafd7f99e2f7f2efc3e5e898ded3bcf667b1b5d50085
[INFO] running `Command { std: "docker" "start" "-a" "921230f70f1757dea63cdafd7f99e2f7f2efc3e5e898ded3bcf667b1b5d50085", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "921230f70f1757dea63cdafd7f99e2f7f2efc3e5e898ded3bcf667b1b5d50085", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "921230f70f1757dea63cdafd7f99e2f7f2efc3e5e898ded3bcf667b1b5d50085", kill_on_drop: false }`
[INFO] [stdout] 921230f70f1757dea63cdafd7f99e2f7f2efc3e5e898ded3bcf667b1b5d50085
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] efcfdd75ff11be8a61fb56c435eb4c0fd95c5ea689bb960bc86a70f7dd04d354
[INFO] running `Command { std: "docker" "start" "-a" "efcfdd75ff11be8a61fb56c435eb4c0fd95c5ea689bb960bc86a70f7dd04d354", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.55
[INFO] [stderr]    Compiling cfg-if v0.1.6
[INFO] [stderr]    Compiling autocfg v0.1.4
[INFO] [stderr]    Compiling version_check v0.1.5
[INFO] [stderr]    Compiling cc v1.0.28
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling rustc-demangle v0.1.13
[INFO] [stderr]    Compiling syn v0.15.34
[INFO] [stderr]    Compiling regex v1.1.0
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling ucd-util v0.1.3
[INFO] [stderr]    Compiling lazy_static v1.2.0
[INFO] [stderr]    Compiling bitflags v1.0.4
[INFO] [stderr]    Compiling serde v1.0.91
[INFO] [stderr]    Compiling nix v0.13.0
[INFO] [stderr]    Compiling utf8-ranges v1.0.2
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling nix v0.12.0
[INFO] [stderr]    Compiling termcolor v1.0.4
[INFO] [stderr]    Compiling log v0.4.6
[INFO] [stderr]    Compiling memchr v2.1.2
[INFO] [stderr]    Compiling regex-syntax v0.6.4
[INFO] [stderr] error: failed to run custom build command for `libc v0.2.55`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/libc-0d16dfa5e4e4f516/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-0.2.55/build.rs:7:31
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x56426fc19d00 - std::backtrace_rs::backtrace::libunwind::trace::h1a33810611ce8d61
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      1:     0x56426fc19d00 - std::backtrace_rs::backtrace::trace_unsynchronized::h4a53559f1c05e6dd
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x56426fc19d00 - std::sys_common::backtrace::_print_fmt::hbeb6239bb320c748
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/sys_common/backtrace.rs:66:5
[INFO] [stderr]      3:     0x56426fc19d00 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h7fdb4e85ba340940
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/sys_common/backtrace.rs:45:22
[INFO] [stderr]      4:     0x56426fc3708e - core::fmt::write::h69f72efb5c17b4ab
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/core/src/fmt/mod.rs:1202:17
[INFO] [stderr]      5:     0x56426fc16f95 - std::io::Write::write_fmt::h844fad8a1ef3a2e8
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/io/mod.rs:1679:15
[INFO] [stderr]      6:     0x56426fc1b383 - std::sys_common::backtrace::_print::ha914f3096bed0a7c
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/sys_common/backtrace.rs:48:5
[INFO] [stderr]      7:     0x56426fc1b383 - std::sys_common::backtrace::print::hf7ca71f4e06841a8
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/sys_common/backtrace.rs:35:9
[INFO] [stderr]      8:     0x56426fc1b383 - std::panicking::default_hook::{{closure}}::h6be03a231a70c800
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/panicking.rs:295:22
[INFO] [stderr]      9:     0x56426fc1b06f - std::panicking::default_hook::h8f58539bc13ee1ad
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/panicking.rs:314:9
[INFO] [stderr]     10:     0x56426fc1ba2a - std::panicking::rust_panic_with_hook::h7a2c121217c9432d
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/panicking.rs:698:17
[INFO] [stderr]     11:     0x56426fc1b927 - std::panicking::begin_panic_handler::{{closure}}::h1ca9e1d42243c666
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/panicking.rs:588:13
[INFO] [stderr]     12:     0x56426fc1a1ac - std::sys_common::backtrace::__rust_end_short_backtrace::h79298f0d734af14a
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/sys_common/backtrace.rs:138:18
[INFO] [stderr]     13:     0x56426fc1b642 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/panicking.rs:584:5
[INFO] [stderr]     14:     0x56426fbf5a93 - core::panicking::panic_fmt::h434b303c3aba650c
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/core/src/panicking.rs:142:14
[INFO] [stderr]     15:     0x56426fc36331 - core::panicking::panic_display::hb3ad875e119462f0
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/core/src/panicking.rs:72:5
[INFO] [stderr]     16:     0x56426fc362db - core::panicking::panic_str::ha6edb658b866df65
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/core/src/panicking.rs:56:5
[INFO] [stderr]     17:     0x56426fbf5906 - core::option::expect_failed::heb591cc2186ba0bd
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/core/src/option.rs:1880:5
[INFO] [stderr]     18:     0x56426fbfa41a - core::option::Option<T>::expect::hd7a0c1b34648fffd
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/core/src/option.rs:738:21
[INFO] [stderr]     19:     0x56426fbfcc54 - build_script_build::main::h8d7a443923483a11
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.55/build.rs:7:9
[INFO] [stderr]     20:     0x56426fbf977b - core::ops::function::FnOnce::call_once::h8f5c303cef153f3d
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/core/src/ops/function.rs:248:5
[INFO] [stderr]     21:     0x56426fbfc7ee - std::sys_common::backtrace::__rust_begin_short_backtrace::h7602cb2d388f1e73
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/sys_common/backtrace.rs:122:18
[INFO] [stderr]     22:     0x56426fbfc861 - std::rt::lang_start::{{closure}}::hdad41c569a0ac1dc
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/rt.rs:166:18
[INFO] [stderr]     23:     0x56426fc146cf - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h0aba527962058f8d
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/core/src/ops/function.rs:280:13
[INFO] [stderr]     24:     0x56426fc146cf - std::panicking::try::do_call::ha4178ef55820a4f8
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/panicking.rs:492:40
[INFO] [stderr]     25:     0x56426fc146cf - std::panicking::try::h4edf4589bde3bb09
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/panicking.rs:456:19
[INFO] [stderr]     26:     0x56426fc146cf - std::panic::catch_unwind::h0951c1592c920aa0
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/panic.rs:137:14
[INFO] [stderr]     27:     0x56426fc146cf - std::rt::lang_start_internal::{{closure}}::h765333e76f22cefc
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/rt.rs:148:48
[INFO] [stderr]     28:     0x56426fc146cf - std::panicking::try::do_call::hcd1370fdda710240
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/panicking.rs:492:40
[INFO] [stderr]     29:     0x56426fc146cf - std::panicking::try::h477fa91d0d1d6fe2
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/panicking.rs:456:19
[INFO] [stderr]     30:     0x56426fc146cf - std::panic::catch_unwind::h409f8207d3ed176c
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/panic.rs:137:14
[INFO] [stderr]     31:     0x56426fc146cf - std::rt::lang_start_internal::h9d73c5ab21cad85e
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/rt.rs:148:20
[INFO] [stderr]     32:     0x56426fbfc83a - std::rt::lang_start::h4187d3a28506bd03
[INFO] [stderr]                                  at /rustc/434cce50d8e9a9de0ddaaccaca51e3e3f4bbb275/library/std/src/rt.rs:165:17
[INFO] [stderr]     33:     0x56426fbfd4a1 - main
[INFO] [stderr]     34:     0x7f91cf80d083 - __libc_start_main
[INFO] [stderr]     35:     0x56426fbf5c6e - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "efcfdd75ff11be8a61fb56c435eb4c0fd95c5ea689bb960bc86a70f7dd04d354", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "efcfdd75ff11be8a61fb56c435eb4c0fd95c5ea689bb960bc86a70f7dd04d354", kill_on_drop: false }`
[INFO] [stdout] efcfdd75ff11be8a61fb56c435eb4c0fd95c5ea689bb960bc86a70f7dd04d354