[INFO] crate ufind 0.3.1 is already in cache
[INFO] checking ufind-0.3.1 against master#0cbcb17d3306d6e22eafc2c05ce885db97d0189c for pr-68766
[INFO] extracting crate ufind 0.3.1 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate ufind 0.3.1 on toolchain 0cbcb17d3306d6e22eafc2c05ce885db97d0189c
[INFO] running `"/workspace/cargo-home/bin/cargo" "+0cbcb17d3306d6e22eafc2c05ce885db97d0189c" "read-manifest" "--manifest-path" "Cargo.toml"`
[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-4/source/Cargo.toml
[INFO] running `"/workspace/cargo-home/bin/cargo" "+0cbcb17d3306d6e22eafc2c05ce885db97d0189c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/workspace/cargo-home/bin/cargo" "+0cbcb17d3306d6e22eafc2c05ce885db97d0189c" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env" "/opt/rustwide/cargo-home/bin/cargo" "+0cbcb17d3306d6e22eafc2c05ce885db97d0189c" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] b3629364ac45ffa7f8b5347659ad57bdeefd72e7112ee41c93fe2803c04236af
[INFO] running `"docker" "start" "-a" "b3629364ac45ffa7f8b5347659ad57bdeefd72e7112ee41c93fe2803c04236af"`
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.33.0
[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-78a3dc67927b6f35/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-2.33.0/src/app/parser.rs:131:25
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x55fd7826bda8 - backtrace::backtrace::libunwind::trace::hdec022fb119dd06d
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/libunwind.rs:88
[INFO] [stderr]    1:     0x55fd7826bda8 - backtrace::backtrace::trace_unsynchronized::h1f309365306cc260
[INFO] [stderr]                                at /cargo/registry/src/github.com-1ecc6299db9ec823/backtrace-0.3.40/src/backtrace/mod.rs:66
[INFO] [stderr]    2:     0x55fd7826bda8 - std::sys_common::backtrace::_print_fmt::hedd348b4f893987a
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:77
[INFO] [stderr]    3:     0x55fd7826bda8 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h381b96a3f9ce8032
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:59
[INFO] [stderr]    4:     0x55fd7828589c - core::fmt::write::he5b6a663f8bc9f46
[INFO] [stderr]                                at src/libcore/fmt/mod.rs:1052
[INFO] [stderr]    5:     0x55fd78269e57 - std::io::Write::write_fmt::h39edd6a910b76376
[INFO] [stderr]                                at src/libstd/io/mod.rs:1428
[INFO] [stderr]    6:     0x55fd7826e235 - std::sys_common::backtrace::_print::hecbfa51643b1d1b2
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:62
[INFO] [stderr]    7:     0x55fd7826e235 - std::sys_common::backtrace::print::he854cdfad1b40844
[INFO] [stderr]                                at src/libstd/sys_common/backtrace.rs:49
[INFO] [stderr]    8:     0x55fd7826e235 - std::panicking::default_hook::{{closure}}::h590c45dbd8599059
[INFO] [stderr]                                at src/libstd/panicking.rs:204
[INFO] [stderr]    9:     0x55fd7826df76 - std::panicking::default_hook::h6b14cee906df5ae9
[INFO] [stderr]                                at src/libstd/panicking.rs:224
[INFO] [stderr]   10:     0x55fd7826e7f2 - std::panicking::rust_panic_with_hook::h845de504d308e21c
[INFO] [stderr]                                at src/libstd/panicking.rs:470
[INFO] [stderr]   11:     0x55fd7826e3db - rust_begin_unwind
[INFO] [stderr]                                at src/libstd/panicking.rs:378
[INFO] [stderr]   12:     0x55fd7826e34b - std::panicking::begin_panic_fmt::hf8fafbfefae5fb7a
[INFO] [stderr]                                at src/libstd/panicking.rs:332
[INFO] [stderr]   13:     0x55fd7820c731 - clap::app::parser::Parser::gen_completions::h642b2a2c1ca6a788
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/clap-2.33.0/src/app/parser.rs:131
[INFO] [stderr]   14:     0x55fd781e731b - clap::app::App::gen_completions::h3295ddcae3e4acfc
[INFO] [stderr]                                at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/clap-2.33.0/src/app/mod.rs:1391
[INFO] [stderr]   15:     0x55fd781e7185 - build_script_build::main::hcac04ce54a5257e5
[INFO] [stderr]                                at /opt/rustwide/workdir/build.rs:15
[INFO] [stderr]   16:     0x55fd781e77d0 - std::rt::lang_start::{{closure}}::hfb4752b8c29b00c1
[INFO] [stderr]                                at /rustc/0cbcb17d3306d6e22eafc2c05ce885db97d0189c/src/libstd/rt.rs:67
[INFO] [stderr]   17:     0x55fd7826e303 - std::rt::lang_start_internal::{{closure}}::h79efcdb1c4a7311a
[INFO] [stderr]                                at src/libstd/rt.rs:52
[INFO] [stderr]   18:     0x55fd7826e303 - std::panicking::try::do_call::h8837c722d8d26052
[INFO] [stderr]                                at src/libstd/panicking.rs:303
[INFO] [stderr]   19:     0x55fd782706a7 - __rust_maybe_catch_panic
[INFO] [stderr]                                at src/libpanic_unwind/lib.rs:86
[INFO] [stderr]   20:     0x55fd7826ec99 - std::panicking::try::h6df407c9e373308b
[INFO] [stderr]                                at src/libstd/panicking.rs:281
[INFO] [stderr]   21:     0x55fd7826ec99 - std::panic::catch_unwind::hb93a3e23c13dcc76
[INFO] [stderr]                                at src/libstd/panic.rs:394
[INFO] [stderr]   22:     0x55fd7826ec99 - std::rt::lang_start_internal::h0eeb85a0fe3bba7b
[INFO] [stderr]                                at src/libstd/rt.rs:51
[INFO] [stderr]   23:     0x55fd781e77a9 - std::rt::lang_start::h6989407681907a79
[INFO] [stderr]                                at /rustc/0cbcb17d3306d6e22eafc2c05ce885db97d0189c/src/libstd/rt.rs:67
[INFO] [stderr]   24:     0x55fd781e727a - main
[INFO] [stderr]   25:     0x7f6606ca8b97 - __libc_start_main
[INFO] [stderr]   26:     0x55fd781e58ea - _start
[INFO] [stderr]   27:                0x0 - <unknown>
[INFO] [stderr] 
[INFO] running `"docker" "inspect" "b3629364ac45ffa7f8b5347659ad57bdeefd72e7112ee41c93fe2803c04236af"`
[INFO] running `"docker" "rm" "-f" "b3629364ac45ffa7f8b5347659ad57bdeefd72e7112ee41c93fe2803c04236af"`
[INFO] [stdout] b3629364ac45ffa7f8b5347659ad57bdeefd72e7112ee41c93fe2803c04236af