[INFO] fetching crate ufind 0.3.1...
[INFO] checking ufind-0.3.1 against try#99a443d6903f71d521237d8acb5a3016b534d17b for pr-83354
[INFO] extracting crate ufind 0.3.1 into /workspace/builds/worker-14/source
[INFO] validating manifest of crates.io crate ufind 0.3.1 on toolchain 99a443d6903f71d521237d8acb5a3016b534d17b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ufind 0.3.1
[INFO] finished tweaking crates.io crate ufind 0.3.1
[INFO] tweaked toml for crates.io crate ufind 0.3.1 written to /workspace/builds/worker-14/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 1a03c7f87b8ea83ad95f626954e7acd2aad96b07fba95fb1f46d6ca17574dbb2
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1a03c7f87b8ea83ad95f626954e7acd2aad96b07fba95fb1f46d6ca17574dbb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1a03c7f87b8ea83ad95f626954e7acd2aad96b07fba95fb1f46d6ca17574dbb2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1a03c7f87b8ea83ad95f626954e7acd2aad96b07fba95fb1f46d6ca17574dbb2", kill_on_drop: false }`
[INFO] [stdout] 1a03c7f87b8ea83ad95f626954e7acd2aad96b07fba95fb1f46d6ca17574dbb2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:4f92631de1aa59f8320307485d3b3c869a5c90ab1d76ce2cffab9807b8c9a1fb" "/opt/rustwide/cargo-home/bin/cargo" "+99a443d6903f71d521237d8acb5a3016b534d17b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cca92812ef2cbbac90c84ca85fc757a7f7ba01e81c76e2dd54518fcdebad5bab
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "cca92812ef2cbbac90c84ca85fc757a7f7ba01e81c76e2dd54518fcdebad5bab", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.92
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.3
[INFO] [stderr]    Compiling ufind v0.3.1 (/opt/rustwide/workdir)
[INFO] [stderr] error: failed to run custom build command for `ufind v0.3.1 (/opt/rustwide/workdir)`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/ufind-8a210a6c51873dd2/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'couldn't create completion file: other os error', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/clap-2.33.3/src/app/parser.rs:138:25
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55dbdff31be0 - std::backtrace_rs::backtrace::libunwind::trace::h4dee703919bfd40a
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x55dbdff31be0 - std::backtrace_rs::backtrace::trace_unsynchronized::h457e839f1a563e20
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55dbdff31be0 - std::sys_common::backtrace::_print_fmt::h86a55fb30f8393c8
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x55dbdff31be0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h7b3d6cac46d277e1
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55dbdff487ff - core::fmt::write::h127419eb46f2ecc9
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/core/src/fmt/mod.rs:1092:17
[INFO] [stderr]      5:     0x55dbdff300b2 - std::io::Write::write_fmt::h6010cfbb4726588b
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/io/mod.rs:1572:15
[INFO] [stderr]      6:     0x55dbdff337c5 - std::sys_common::backtrace::_print::h79b4f9652330cc9d
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x55dbdff337c5 - std::sys_common::backtrace::print::h330bb326a76af8cf
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x55dbdff337c5 - std::panicking::default_hook::{{closure}}::heb6a42a7d50a472e
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x55dbdff33273 - std::panicking::default_hook::h17e521ba6d68d6e1
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x55dbdff33dcd - std::panicking::rust_panic_with_hook::h70db735e3a6e70cb
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/panicking.rs:591:17
[INFO] [stderr]     11:     0x55dbdff33967 - std::panicking::begin_panic_handler::{{closure}}::h777c71c8e5a7e25c
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/panicking.rs:497:13
[INFO] [stderr]     12:     0x55dbdff3209c - std::sys_common::backtrace::__rust_end_short_backtrace::h3e9bf30168899554
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x55dbdff338c9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x55dbdfeb7e4b - std::panicking::begin_panic_fmt::h0b6b6d9d830486ef
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/panicking.rs:435:5
[INFO] [stderr]     15:     0x55dbdfecdcfa - clap::app::parser::Parser::gen_completions::h4970fbe80488ea58
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/clap-2.33.3/src/app/parser.rs:138:25
[INFO] [stderr]     16:     0x55dbdfeba366 - clap::app::App::gen_completions::ha36982e847c5ceef
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/clap-2.33.3/src/app/mod.rs:1400:9
[INFO] [stderr]     17:     0x55dbdfeb914b - build_script_build::main::h48b226ce0511b4e0
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:15:5
[INFO] [stderr]     18:     0x55dbdfeb936b - core::ops::function::FnOnce::call_once::hae5deec769c66e43
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     19:     0x55dbdfeb944e - std::sys_common::backtrace::__rust_begin_short_backtrace::h737b7c61dadad6ce
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     20:     0x55dbdfeba2b1 - std::rt::lang_start::{{closure}}::h812e5451260ba832
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/rt.rs:66:18
[INFO] [stderr]     21:     0x55dbdff341ca - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hbcc915e668c7ca11
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     22:     0x55dbdff341ca - std::panicking::try::do_call::h6b0f430d48122ddf
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/panicking.rs:379:40
[INFO] [stderr]     23:     0x55dbdff341ca - std::panicking::try::h6ba420e2e21b5afa
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/panicking.rs:343:19
[INFO] [stderr]     24:     0x55dbdff341ca - std::panic::catch_unwind::h8366719d1f615eee
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/panic.rs:431:14
[INFO] [stderr]     25:     0x55dbdff341ca - std::rt::lang_start_internal::h965c28c9ce06ee73
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/rt.rs:51:25
[INFO] [stderr]     26:     0x55dbdfeba290 - std::rt::lang_start::h97dce3b9994b6be2
[INFO] [stderr]                                  at /rustc/99a443d6903f71d521237d8acb5a3016b534d17b/library/std/src/rt.rs:65:5
[INFO] [stderr]     27:     0x55dbdfeb923c - main
[INFO] [stderr]     28:     0x7efd916540b3 - __libc_start_main
[INFO] [stderr]     29:     0x55dbdfeb88ce - _start
[INFO] [stderr]     30:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "cca92812ef2cbbac90c84ca85fc757a7f7ba01e81c76e2dd54518fcdebad5bab", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cca92812ef2cbbac90c84ca85fc757a7f7ba01e81c76e2dd54518fcdebad5bab", kill_on_drop: false }`
[INFO] [stdout] cca92812ef2cbbac90c84ca85fc757a7f7ba01e81c76e2dd54518fcdebad5bab