[INFO] cloning repository https://github.com/bertjwregeer/barnacle
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/bertjwregeer/barnacle" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbertjwregeer%2Fbarnacle", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbertjwregeer%2Fbarnacle'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b73673a2a144adf936f900cb597b7b25ef61f782
[INFO] checking bertjwregeer/barnacle against try#d5fea8dd9e615740edb0e87b666e3656caa96a77 for pr-103965
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fbertjwregeer%2Fbarnacle" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/bertjwregeer/barnacle on toolchain d5fea8dd9e615740edb0e87b666e3656caa96a77
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5fea8dd9e615740edb0e87b666e3656caa96a77" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/bertjwregeer/barnacle
[INFO] finished tweaking git repo https://github.com/bertjwregeer/barnacle
[INFO] tweaked toml for git repo https://github.com/bertjwregeer/barnacle written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] crate git repo https://github.com/bertjwregeer/barnacle already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+d5fea8dd9e615740edb0e87b666e3656caa96a77" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:83125433e4fff17b1ac56874832f668d9df75ee638575aca552b68e127bedee9" "/opt/rustwide/cargo-home/bin/cargo" "+d5fea8dd9e615740edb0e87b666e3656caa96a77" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] df3a968efd7e82822535a44d8d0452d01773b647a8397c900cd379e4eb9b1dad
[INFO] running `Command { std: "docker" "start" "-a" "df3a968efd7e82822535a44d8d0452d01773b647a8397c900cd379e4eb9b1dad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "df3a968efd7e82822535a44d8d0452d01773b647a8397c900cd379e4eb9b1dad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "df3a968efd7e82822535a44d8d0452d01773b647a8397c900cd379e4eb9b1dad", kill_on_drop: false }`
[INFO] [stdout] df3a968efd7e82822535a44d8d0452d01773b647a8397c900cd379e4eb9b1dad
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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@sha256:83125433e4fff17b1ac56874832f668d9df75ee638575aca552b68e127bedee9" "/opt/rustwide/cargo-home/bin/cargo" "+d5fea8dd9e615740edb0e87b666e3656caa96a77" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79bf1fbb3162a0ac9976c166d43caa7a5728aea524604f261d0e4d7a43822cfa
[INFO] running `Command { std: "docker" "start" "-a" "79bf1fbb3162a0ac9976c166d43caa7a5728aea524604f261d0e4d7a43822cfa", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.46
[INFO] [stderr]    Compiling quote v1.0.21
[INFO] [stderr]    Compiling unicode-ident v1.0.4
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling syn v1.0.101
[INFO] [stderr]    Compiling libc v0.2.134
[INFO] [stderr]    Compiling serde v1.0.145
[INFO] [stderr]    Compiling serde_json v1.0.85
[INFO] [stderr]     Checking os_str_bytes v6.3.0
[INFO] [stderr]     Checking ryu v1.0.11
[INFO] [stderr] error: failed to run custom build command for `libc v0.2.134`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/libc-a3cfeb93cd07bf81/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-changed=build.rs
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'Failed to get rustc version', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.134/build.rs:9:63
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55ff1373c7a0 - std::backtrace_rs::backtrace::libunwind::trace::h0819ddbe5d0a4fcc
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stderr]      1:     0x55ff1373c7a0 - std::backtrace_rs::backtrace::trace_unsynchronized::h898f4a6ec5dd0bfe
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55ff1373c7a0 - std::sys_common::backtrace::_print_fmt::h0d4763634fe1056f
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/sys_common/backtrace.rs:65:5
[INFO] [stderr]      3:     0x55ff1373c7a0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h421f3af09ca2e69f
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x55ff137598ee - core::fmt::write::h64cbf31f98e16319
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/core/src/fmt/mod.rs:1209:17
[INFO] [stderr]      5:     0x55ff13739e55 - std::io::Write::write_fmt::hafc77def691eff04
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/io/mod.rs:1682:15
[INFO] [stderr]      6:     0x55ff1373c565 - std::sys_common::backtrace::_print::h59089cbaedbd9292
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      7:     0x55ff1373c565 - std::sys_common::backtrace::print::h5462603fd88e7646
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      8:     0x55ff1373dc4f - std::panicking::default_hook::{{closure}}::ha1ac95a9bd4ee41a
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/panicking.rs:267:22
[INFO] [stderr]      9:     0x55ff1373d98a - std::panicking::default_hook::hbf6b67977c260b3b
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/panicking.rs:286:9
[INFO] [stderr]     10:     0x55ff1373e34c - std::panicking::rust_panic_with_hook::h7fc1350d1475385b
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/panicking.rs:688:13
[INFO] [stderr]     11:     0x55ff1373e0e7 - std::panicking::begin_panic_handler::{{closure}}::hc18d1c3f99b50f34
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/panicking.rs:579:13
[INFO] [stderr]     12:     0x55ff1373cc4c - std::sys_common::backtrace::__rust_end_short_backtrace::h25c065c7a549c886
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/sys_common/backtrace.rs:137:18
[INFO] [stderr]     13:     0x55ff1373de02 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/panicking.rs:575:5
[INFO] [stderr]     14:     0x55ff13716083 - core::panicking::panic_fmt::heda96d217264f647
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/core/src/panicking.rs:65:14
[INFO] [stderr]     15:     0x55ff13758b91 - core::panicking::panic_display::hacca01fb391ac906
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/core/src/panicking.rs:139:5
[INFO] [stderr]     16:     0x55ff13758b3b - core::panicking::panic_str::h2757e597acf51139
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/core/src/panicking.rs:123:5
[INFO] [stderr]     17:     0x55ff13716046 - core::option::expect_failed::hc0d2e8a232dd54d7
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/core/src/option.rs:1879:5
[INFO] [stderr]     18:     0x55ff13720139 - core::option::Option<T>::expect::h62448701166e398d
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/core/src/option.rs:741:21
[INFO] [stderr]     19:     0x55ff1371b394 - build_script_build::main::he8fa48220907347d
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.134/build.rs:9:41
[INFO] [stderr]     20:     0x55ff1371ed2b - core::ops::function::FnOnce::call_once::h0fbb7be3ea4bc351
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/core/src/ops/function.rs:251:5
[INFO] [stderr]     21:     0x55ff1371fabe - std::sys_common::backtrace::__rust_begin_short_backtrace::hdb56e55c58a93b2c
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/sys_common/backtrace.rs:121:18
[INFO] [stderr]     22:     0x55ff137186d1 - std::rt::lang_start::{{closure}}::h9b2737d02e70ebb5
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/rt.rs:166:18
[INFO] [stderr]     23:     0x55ff137371ab - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hbf8b1f637da2e5a9
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/core/src/ops/function.rs:286:13
[INFO] [stderr]     24:     0x55ff137371ab - std::panicking::try::do_call::h52525f0159524605
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/panicking.rs:483:40
[INFO] [stderr]     25:     0x55ff137371ab - std::panicking::try::hbb02eba8b5f12e64
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/panicking.rs:447:19
[INFO] [stderr]     26:     0x55ff137371ab - std::panic::catch_unwind::h1890d5a6614c8922
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/panic.rs:137:14
[INFO] [stderr]     27:     0x55ff137371ab - std::rt::lang_start_internal::{{closure}}::h84e09e9d36359fa3
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/rt.rs:148:48
[INFO] [stderr]     28:     0x55ff137371ab - std::panicking::try::do_call::h568f36f01fad4060
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/panicking.rs:483:40
[INFO] [stderr]     29:     0x55ff137371ab - std::panicking::try::h4cd361038ab0bd71
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/panicking.rs:447:19
[INFO] [stderr]     30:     0x55ff137371ab - std::panic::catch_unwind::h9a6b05214bc33c71
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/panic.rs:137:14
[INFO] [stderr]     31:     0x55ff137371ab - std::rt::lang_start_internal::h8a2fbad4072338ac
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/rt.rs:148:20
[INFO] [stderr]     32:     0x55ff137186aa - std::rt::lang_start::h6d78c692f4994c17
[INFO] [stderr]                                  at /rustc/d5fea8dd9e615740edb0e87b666e3656caa96a77/library/std/src/rt.rs:165:17
[INFO] [stderr]     33:     0x55ff1371cb5e - main
[INFO] [stderr]     34:     0x7f17e722e083 - __libc_start_main
[INFO] [stderr]     35:     0x55ff137163ce - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "79bf1fbb3162a0ac9976c166d43caa7a5728aea524604f261d0e4d7a43822cfa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79bf1fbb3162a0ac9976c166d43caa7a5728aea524604f261d0e4d7a43822cfa", kill_on_drop: false }`
[INFO] [stdout] 79bf1fbb3162a0ac9976c166d43caa7a5728aea524604f261d0e4d7a43822cfa