[INFO] cloning repository https://github.com/ycatbink0t/smallest_enclosing_ring
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ycatbink0t/smallest_enclosing_ring" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fycatbink0t%2Fsmallest_enclosing_ring", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fycatbink0t%2Fsmallest_enclosing_ring'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 13e654db002d9882d0e4a1c237bd6c5eccfda6c5
[INFO] testing ycatbink0t/smallest_enclosing_ring against try#9ce6b522e9d830b1461df3e1b001b5831bd32346 for pr-101061-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fycatbink0t%2Fsmallest_enclosing_ring" "/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/ycatbink0t/smallest_enclosing_ring on toolchain 9ce6b522e9d830b1461df3e1b001b5831bd32346
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9ce6b522e9d830b1461df3e1b001b5831bd32346" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ycatbink0t/smallest_enclosing_ring
[INFO] finished tweaking git repo https://github.com/ycatbink0t/smallest_enclosing_ring
[INFO] tweaked toml for git repo https://github.com/ycatbink0t/smallest_enclosing_ring written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/ycatbink0t/smallest_enclosing_ring already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9ce6b522e9d830b1461df3e1b001b5831bd32346" "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-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" "+9ce6b522e9d830b1461df3e1b001b5831bd32346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 96e09130d0f1146553d82e680e22a5ec30bba8ccfb737f578dbb46afc93a17f2
[INFO] running `Command { std: "docker" "start" "-a" "96e09130d0f1146553d82e680e22a5ec30bba8ccfb737f578dbb46afc93a17f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "96e09130d0f1146553d82e680e22a5ec30bba8ccfb737f578dbb46afc93a17f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "96e09130d0f1146553d82e680e22a5ec30bba8ccfb737f578dbb46afc93a17f2", kill_on_drop: false }`
[INFO] [stdout] 96e09130d0f1146553d82e680e22a5ec30bba8ccfb737f578dbb46afc93a17f2
[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" "+9ce6b522e9d830b1461df3e1b001b5831bd32346" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 41cd345c724cb48f614551557ad36dece073e8a4039ad3bb21bef78049a924e7
[INFO] running `Command { std: "docker" "start" "-a" "41cd345c724cb48f614551557ad36dece073e8a4039ad3bb21bef78049a924e7", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.71
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling ppv-lite86 v0.2.8
[INFO] [stderr] error: failed to run custom build command for `libc v0.2.71`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/libc-bc6c69f8bde71f2b/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-0.2.71/build.rs:7:31
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55fc44f38eb0 - std::backtrace_rs::backtrace::libunwind::trace::hf53d662b5c6d77d2
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      1:     0x55fc44f38eb0 - std::backtrace_rs::backtrace::trace_unsynchronized::h6e3cf02005f608bf
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55fc44f38eb0 - std::sys_common::backtrace::_print_fmt::h6d567679a2265c44
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys_common/backtrace.rs:66:5
[INFO] [stderr]      3:     0x55fc44f38eb0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1a668cb169fcef22
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys_common/backtrace.rs:45:22
[INFO] [stderr]      4:     0x55fc44f5624e - core::fmt::write::hd1139dfe9eec9a34
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/fmt/mod.rs:1202:17
[INFO] [stderr]      5:     0x55fc44f36135 - std::io::Write::write_fmt::h08185aaaca6f1bb4
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/io/mod.rs:1679:15
[INFO] [stderr]      6:     0x55fc44f3a533 - std::sys_common::backtrace::_print::hd3a9cd6aaf1b9c8d
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys_common/backtrace.rs:48:5
[INFO] [stderr]      7:     0x55fc44f3a533 - std::sys_common::backtrace::print::hfa27ea3e00247e12
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys_common/backtrace.rs:35:9
[INFO] [stderr]      8:     0x55fc44f3a533 - std::panicking::default_hook::{{closure}}::h76f2cc009fc0e4ed
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:295:22
[INFO] [stderr]      9:     0x55fc44f3a21f - std::panicking::default_hook::h84e3f8d9ac8ff74e
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:314:9
[INFO] [stderr]     10:     0x55fc44f3abda - std::panicking::rust_panic_with_hook::hb27f77e939cc5d74
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:698:17
[INFO] [stderr]     11:     0x55fc44f3aad7 - std::panicking::begin_panic_handler::{{closure}}::h2c35a3b6ab1a1b5d
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:588:13
[INFO] [stderr]     12:     0x55fc44f3935c - std::sys_common::backtrace::__rust_end_short_backtrace::hdd7621cbda95655d
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys_common/backtrace.rs:138:18
[INFO] [stderr]     13:     0x55fc44f3a7f2 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:584:5
[INFO] [stderr]     14:     0x55fc44f12a93 - core::panicking::panic_fmt::h5158c91fc6eda82a
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/panicking.rs:142:14
[INFO] [stderr]     15:     0x55fc44f554f1 - core::panicking::panic_display::hda032d3252b47e95
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/panicking.rs:72:5
[INFO] [stderr]     16:     0x55fc44f5549b - core::panicking::panic_str::h235afc9193e31789
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/panicking.rs:56:5
[INFO] [stderr]     17:     0x55fc44f12906 - core::option::expect_failed::h224a1686b6775ed8
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/option.rs:1880:5
[INFO] [stderr]     18:     0x55fc44f1c662 - core::option::Option<T>::expect::hc3ad0ba2dabdaacb
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/option.rs:738:21
[INFO] [stderr]     19:     0x55fc44f1a337 - build_script_build::main::h4896e14e70d41635
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.71/build.rs:7:9
[INFO] [stderr]     20:     0x55fc44f186fb - core::ops::function::FnOnce::call_once::hfc81971a7c1b36f9
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/ops/function.rs:248:5
[INFO] [stderr]     21:     0x55fc44f1b84e - std::sys_common::backtrace::__rust_begin_short_backtrace::h97dba422e4eb5892
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/sys_common/backtrace.rs:122:18
[INFO] [stderr]     22:     0x55fc44f14f71 - std::rt::lang_start::{{closure}}::h38627425bb516a26
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/rt.rs:166:18
[INFO] [stderr]     23:     0x55fc44f3386f - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h7adb92fd6b846919
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/core/src/ops/function.rs:283:13
[INFO] [stderr]     24:     0x55fc44f3386f - std::panicking::try::do_call::h374337de2475417b
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:492:40
[INFO] [stderr]     25:     0x55fc44f3386f - std::panicking::try::h47601dcaec5b0e3d
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:456:19
[INFO] [stderr]     26:     0x55fc44f3386f - std::panic::catch_unwind::h758dc435518ac245
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panic.rs:137:14
[INFO] [stderr]     27:     0x55fc44f3386f - std::rt::lang_start_internal::{{closure}}::h628172e91ff5e6da
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/rt.rs:148:48
[INFO] [stderr]     28:     0x55fc44f3386f - std::panicking::try::do_call::ha9819755b5142577
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:492:40
[INFO] [stderr]     29:     0x55fc44f3386f - std::panicking::try::hd7e8c48bb2f4067d
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panicking.rs:456:19
[INFO] [stderr]     30:     0x55fc44f3386f - std::panic::catch_unwind::h606ad60bc11b066d
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/panic.rs:137:14
[INFO] [stderr]     31:     0x55fc44f3386f - std::rt::lang_start_internal::h2bb299ef5a5d46ca
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/rt.rs:148:20
[INFO] [stderr]     32:     0x55fc44f14f4a - std::rt::lang_start::hb02642739c826234
[INFO] [stderr]                                  at /rustc/9ce6b522e9d830b1461df3e1b001b5831bd32346/library/std/src/rt.rs:165:17
[INFO] [stderr]     33:     0x55fc44f1b7e1 - main
[INFO] [stderr]     34:     0x7f416c269083 - __libc_start_main
[INFO] [stderr]     35:     0x55fc44f12c6e - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "41cd345c724cb48f614551557ad36dece073e8a4039ad3bb21bef78049a924e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "41cd345c724cb48f614551557ad36dece073e8a4039ad3bb21bef78049a924e7", kill_on_drop: false }`
[INFO] [stdout] 41cd345c724cb48f614551557ad36dece073e8a4039ad3bb21bef78049a924e7