[INFO] fetching crate ufind 0.3.1...
[INFO] checking ufind-0.3.1 against try#894d32a5432c6a6461bb2aac7c3d5f2e87dce83f for pr-77015
[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 894d32a5432c6a6461bb2aac7c3d5f2e87dce83f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "read-manifest" "--manifest-path" "Cargo.toml", 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-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "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" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "rustops/crates-build-env@sha256:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 0ef0102feacf40c18397837488b007dce02b3495904b40ca23d0d89e7affeb9f
[INFO] running `Command { std: "docker" "start" "-a" "0ef0102feacf40c18397837488b007dce02b3495904b40ca23d0d89e7affeb9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0ef0102feacf40c18397837488b007dce02b3495904b40ca23d0d89e7affeb9f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0ef0102feacf40c18397837488b007dce02b3495904b40ca23d0d89e7affeb9f", kill_on_drop: false }`
[INFO] [stdout] 0ef0102feacf40c18397837488b007dce02b3495904b40ca23d0d89e7affeb9f
[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" "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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+894d32a5432c6a6461bb2aac7c3d5f2e87dce83f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 97b332e6ccfbbd5362a203f3693c4c0e3ea033fedba3b71eba8ee27979f3384f
[INFO] running `Command { std: "docker" "start" "-a" "97b332e6ccfbbd5362a203f3693c4c0e3ea033fedba3b71eba8ee27979f3384f", kill_on_drop: false }`
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]     Checking vec_map v0.8.2
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling libc v0.2.78
[INFO] [stderr]     Checking clap v2.33.3
[INFO] [stderr]    Compiling atty v0.2.14
[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-6f5af2d46d36c0a1/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:     0x55dccbd63aa0 - std::backtrace_rs::backtrace::libunwind::trace::he85dfb3ae4206056
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stderr]      1:     0x55dccbd63aa0 - std::backtrace_rs::backtrace::trace_unsynchronized::h1ad28094d7b00c21
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stderr]      2:     0x55dccbd63aa0 - std::sys_common::backtrace::_print_fmt::h901b54610713cd21
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/sys_common/backtrace.rs:79
[INFO] [stderr]      3:     0x55dccbd63aa0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hb0ad78ee1571f7e0
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/sys_common/backtrace.rs:58
[INFO] [stderr]      4:     0x55dccbd7cd1c - core::fmt::write::h1857a60b204f1b6a
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/core/src/fmt/mod.rs:1080
[INFO] [stderr]      5:     0x55dccbd61d22 - std::io::Write::write_fmt::hf7b7d7b243f84a36
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/io/mod.rs:1516
[INFO] [stderr]      6:     0x55dccbd65bed - std::sys_common::backtrace::_print::hd093978a5287b8ff
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/sys_common/backtrace.rs:61
[INFO] [stderr]      7:     0x55dccbd65bed - std::sys_common::backtrace::print::h20f46787581d56d7
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/sys_common/backtrace.rs:48
[INFO] [stderr]      8:     0x55dccbd65bed - std::panicking::default_hook::{{closure}}::h486cbb4b82ffc357
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/panicking.rs:208
[INFO] [stderr]      9:     0x55dccbd65898 - std::panicking::default_hook::h4190c9e3edd4d591
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/panicking.rs:227
[INFO] [stderr]     10:     0x55dccbd662d1 - std::panicking::rust_panic_with_hook::h72e78719cdda225c
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/panicking.rs:577
[INFO] [stderr]     11:     0x55dccbd65e79 - std::panicking::begin_panic_handler::{{closure}}::h8bd07dbd34150a96
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/panicking.rs:484
[INFO] [stderr]     12:     0x55dccbd63f2c - std::sys_common::backtrace::__rust_end_short_backtrace::hdb6b3066ad29028a
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/sys_common/backtrace.rs:153
[INFO] [stderr]     13:     0x55dccbd65e39 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/panicking.rs:483
[INFO] [stderr]     14:     0x55dccbd65deb - std::panicking::begin_panic_fmt::hc19e75fd2b7bc39b
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/panicking.rs:437
[INFO] [stderr]     15:     0x55dccbce9c13 - clap::app::parser::Parser::gen_completions::hd414ac59d293fd66
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/clap-2.33.3/src/app/parser.rs:138
[INFO] [stderr]     16:     0x55dccbce8a8b - clap::app::App::gen_completions::h836859b2eddcf0e8
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/clap-2.33.3/src/app/mod.rs:1400
[INFO] [stderr]     17:     0x55dccbce88ea - build_script_build::main::h71c3640083c895c3
[INFO] [stderr]                                  at /opt/rustwide/workdir/build.rs:15
[INFO] [stderr]     18:     0x55dccbce803b - core::ops::function::FnOnce::call_once::h2a0b3c85434513e7
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/core/src/ops/function.rs:227
[INFO] [stderr]     19:     0x55dccbce7f9e - std::sys_common::backtrace::__rust_begin_short_backtrace::h4a18ed5b50acf171
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/sys_common/backtrace.rs:137
[INFO] [stderr]     20:     0x55dccbce8f61 - std::rt::lang_start::{{closure}}::h470fda21f673caa7
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/rt.rs:66
[INFO] [stderr]     21:     0x55dccbd666f7 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h5e15f43ce28787f7
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/core/src/ops/function.rs:259
[INFO] [stderr]     22:     0x55dccbd666f7 - std::panicking::try::do_call::h764f1891769113e9
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/panicking.rs:381
[INFO] [stderr]     23:     0x55dccbd666f7 - std::panicking::try::h0f2fe4fdd5e0ad19
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/panicking.rs:345
[INFO] [stderr]     24:     0x55dccbd666f7 - std::panic::catch_unwind::h1634e40dd3a19f80
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/panic.rs:382
[INFO] [stderr]     25:     0x55dccbd666f7 - std::rt::lang_start_internal::h8d4bc7b854bbd5fe
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/rt.rs:51
[INFO] [stderr]     26:     0x55dccbce8f37 - std::rt::lang_start::hddf30e17abcc2cb7
[INFO] [stderr]                                  at /rustc/894d32a5432c6a6461bb2aac7c3d5f2e87dce83f/library/std/src/rt.rs:65
[INFO] [stderr]     27:     0x55dccbce89da - main
[INFO] [stderr]     28:     0x7fbf6811c0b3 - __libc_start_main
[INFO] [stderr]     29:     0x55dccbce70be - _start
[INFO] [stderr]     30:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "97b332e6ccfbbd5362a203f3693c4c0e3ea033fedba3b71eba8ee27979f3384f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "97b332e6ccfbbd5362a203f3693c4c0e3ea033fedba3b71eba8ee27979f3384f", kill_on_drop: false }`
[INFO] [stdout] 97b332e6ccfbbd5362a203f3693c4c0e3ea033fedba3b71eba8ee27979f3384f