[INFO] cloning repository https://github.com/ryoh/nstest
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ryoh/nstest" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryoh%2Fnstest", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryoh%2Fnstest'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d287131b115ddaa7e9ad00e9f4a931860f753c92
[INFO] checking ryoh/nstest against try#88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c for pr-154887
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryoh%2Fnstest" "/workspace/builds/worker-4-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/ryoh/nstest
[INFO] finished tweaking git repo https://github.com/ryoh/nstest
[INFO] tweaked toml for git repo https://github.com/ryoh/nstest written to /workspace/builds/worker-4-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/ryoh/nstest on toolchain 88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/ryoh/nstest already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c" "fetch" "--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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded sys-mount v1.3.0
[INFO] [stderr]   Downloaded env_logger v0.8.4
[INFO] [stderr]   Downloaded shlex v1.1.0
[INFO] [stderr]   Downloaded loopdev v0.3.0
[INFO] [stderr]   Downloaded libloading v0.7.2
[INFO] [stderr]   Downloaded clang-sys v1.3.0
[INFO] [stderr]   Downloaded bindgen v0.58.1
[INFO] [stderr]   Downloaded nix v0.23.1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c471c26687cc43cf41953ff8a278c2843268521e22b53011a95a9e2e208f4850
[INFO] running `Command { std: "docker" "start" "-a" "c471c26687cc43cf41953ff8a278c2843268521e22b53011a95a9e2e208f4850", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c471c26687cc43cf41953ff8a278c2843268521e22b53011a95a9e2e208f4850", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c471c26687cc43cf41953ff8a278c2843268521e22b53011a95a9e2e208f4850", kill_on_drop: false }`
[INFO] [stdout] c471c26687cc43cf41953ff8a278c2843268521e22b53011a95a9e2e208f4850
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc2/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a75c0389510bffd08f04a1bbccaec693df7849d04c021563a9d7da71d5cef38b
[INFO] running `Command { std: "docker" "start" "-a" "a75c0389510bffd08f04a1bbccaec693df7849d04c021563a9d7da71d5cef38b", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling version_check v0.9.3
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.34
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling regex-syntax v0.6.25
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling libloading v0.7.2
[INFO] [stderr]    Compiling nom v5.1.2
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling clang-sys v1.3.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling termcolor v1.1.2
[INFO] [stderr]    Compiling bindgen v0.58.1
[INFO] [stderr]    Compiling humantime v2.1.0
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling which v3.1.1
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling quote v1.0.10
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling anyhow v1.0.51
[INFO] [stderr]    Compiling memoffset v0.6.5
[INFO] [stderr]    Compiling regex v1.5.4
[INFO] [stderr]     Checking errno v0.2.8
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]    Compiling cexpr v0.4.0
[INFO] [stderr]    Compiling env_logger v0.8.4
[INFO] [stderr]    Compiling loopdev v0.3.0
[INFO] [stderr] error: failed to run custom build command for `loopdev v0.3.0`
[INFO] [stderr] note: To improve backtraces for build dependencies, set the CARGO_PROFILE_DEV_BUILD_OVERRIDE_DEBUG=true environment variable to enable debug information generation.
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/loopdev-a41017883a796425/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (682) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.34/src/fallback.rs:702:9:
[INFO] [stderr]   "enum_(unnamed_at_/usr/include/linux/loop_h_16_1)" is not a valid Ident
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x62153bcd7eea - std[fb0be1524d814480]::backtrace_rs::backtrace::libunwind::trace
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x62153bcd7eea - std[fb0be1524d814480]::backtrace_rs::backtrace::trace_unsynchronized::<std[fb0be1524d814480]::sys::backtrace::_print_fmt::{closure#1}>
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x62153bcd7eea - std[fb0be1524d814480]::sys::backtrace::_print_fmt
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/sys/backtrace.rs:74:9
[INFO] [stderr]      3:     0x62153bcd7eea - <<std[fb0be1524d814480]::sys::backtrace::BacktraceLock>::print::DisplayBacktrace as core[7d3afe705a026c7c]::fmt::Display>::fmt
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/sys/backtrace.rs:44:26
[INFO] [stderr]      4:     0x62153bced65a - <core[7d3afe705a026c7c]::fmt::rt::Argument>::fmt
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/core/src/fmt/rt.rs:152:76
[INFO] [stderr]      5:     0x62153bced65a - core[7d3afe705a026c7c]::fmt::write
[INFO] [stderr]      6:     0x62153bcdce12 - std[fb0be1524d814480]::io::default_write_fmt::<std[fb0be1524d814480]::sys::stdio::unix::Stderr>
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/io/mod.rs:621:11
[INFO] [stderr]      7:     0x62153bcdce12 - <std[fb0be1524d814480]::sys::stdio::unix::Stderr as std[fb0be1524d814480]::io::Write>::write_fmt
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/io/mod.rs:1976:13
[INFO] [stderr]      8:     0x62153bcbb6af - <std[fb0be1524d814480]::sys::backtrace::BacktraceLock>::print
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/sys/backtrace.rs:47:9
[INFO] [stderr]      9:     0x62153bcbb6af - std[fb0be1524d814480]::panicking::default_hook::{closure#0}
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/panicking.rs:292:27
[INFO] [stderr]     10:     0x62153bcd2c01 - std[fb0be1524d814480]::panicking::default_hook
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/panicking.rs:319:9
[INFO] [stderr]     11:     0x62153bcd2dbb - std[fb0be1524d814480]::panicking::panic_with_hook
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/panicking.rs:825:13
[INFO] [stderr]     12:     0x62153bcbb768 - std[fb0be1524d814480]::panicking::panic_handler::{closure#0}
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/panicking.rs:698:13
[INFO] [stderr]     13:     0x62153bcb3049 - std[fb0be1524d814480]::sys::backtrace::__rust_end_short_backtrace::<std[fb0be1524d814480]::panicking::panic_handler::{closure#0}, !>
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/sys/backtrace.rs:182:18
[INFO] [stderr]     14:     0x62153bcbc0cd - __rustc[6f459eaef5dc7015]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/panicking.rs:689:5
[INFO] [stderr]     15:     0x62153bcede4c - core[7d3afe705a026c7c]::panicking::panic_fmt
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/core/src/panicking.rs:80:14
[INFO] [stderr]     16:     0x62153bc9cd4b - proc_macro2[dbdeca6017917b9b]::fallback::validate_ident
[INFO] [stderr]     17:     0x62153bc9c231 - <proc_macro2[dbdeca6017917b9b]::fallback::Ident>::_new
[INFO] [stderr]     18:     0x62153bc9c1ef - <proc_macro2[dbdeca6017917b9b]::fallback::Ident>::new
[INFO] [stderr]     19:     0x62153bc92d48 - <proc_macro2[dbdeca6017917b9b]::Ident>::new
[INFO] [stderr]     20:     0x62153ba52bc5 - <bindgen[99170ae1ee194fbb]::ir::context::BindgenContext>::rust_ident_raw::<alloc[989e609274057b62]::borrow::Cow<str>>
[INFO] [stderr]     21:     0x62153ba52530 - <bindgen[99170ae1ee194fbb]::ir::context::BindgenContext>::rust_ident::<&alloc[989e609274057b62]::string::String>
[INFO] [stderr]     22:     0x62153b96e99b - <bindgen[99170ae1ee194fbb]::ir::enum_ty::Enum as bindgen[99170ae1ee194fbb]::codegen::CodeGenerator>::codegen
[INFO] [stderr]     23:     0x62153ba247db - <bindgen[99170ae1ee194fbb]::ir::ty::Type as bindgen[99170ae1ee194fbb]::codegen::CodeGenerator>::codegen
[INFO] [stderr]     24:     0x62153b9c4dcb - <bindgen[99170ae1ee194fbb]::ir::item::Item as bindgen[99170ae1ee194fbb]::codegen::CodeGenerator>::codegen
[INFO] [stderr]     25:     0x62153b95c6c5 - <bindgen[99170ae1ee194fbb]::ir::module::Module as bindgen[99170ae1ee194fbb]::codegen::CodeGenerator>::codegen::{closure#0}
[INFO] [stderr]     26:     0x62153ba0b927 - <bindgen[99170ae1ee194fbb]::ir::module::Module as bindgen[99170ae1ee194fbb]::codegen::CodeGenerator>::codegen
[INFO] [stderr]     27:     0x62153b9c4db0 - <bindgen[99170ae1ee194fbb]::ir::item::Item as bindgen[99170ae1ee194fbb]::codegen::CodeGenerator>::codegen
[INFO] [stderr]     28:     0x62153b95bc2a - bindgen[99170ae1ee194fbb]::codegen::codegen::{closure#0}
[INFO] [stderr]     29:     0x62153ba53e48 - <bindgen[99170ae1ee194fbb]::ir::context::BindgenContext>::gen::<bindgen[99170ae1ee194fbb]::codegen::codegen::{closure#0}, alloc[989e609274057b62]::vec::Vec<proc_macro2[dbdeca6017917b9b]::TokenStream>>
[INFO] [stderr]     30:     0x62153b965ecd - bindgen[99170ae1ee194fbb]::codegen::codegen
[INFO] [stderr]     31:     0x62153ba46e51 - <bindgen[99170ae1ee194fbb]::Bindings>::generate
[INFO] [stderr]     32:     0x62153ba43a45 - <bindgen[99170ae1ee194fbb]::Builder>::generate
[INFO] [stderr]     33:     0x62153b943446 - build_script_build[5fedf9f78b44b41a]::main
[INFO] [stderr]     34:     0x62153b944473 - <fn() as core[7d3afe705a026c7c]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]     35:     0x62153b943366 - std[fb0be1524d814480]::sys::backtrace::__rust_begin_short_backtrace::<fn(), ()>
[INFO] [stderr]     36:     0x62153b943379 - std[fb0be1524d814480]::rt::lang_start::<()>::{closure#0}
[INFO] [stderr]     37:     0x62153bcd1d64 - <&dyn core[7d3afe705a026c7c]::ops::function::Fn<(), Output = i32> + core[7d3afe705a026c7c]::marker::Sync + core[7d3afe705a026c7c]::panic::unwind_safe::RefUnwindSafe as core[7d3afe705a026c7c]::ops::function::FnOnce<()>>::call_once
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     38:     0x62153bcd1d64 - std[fb0be1524d814480]::panicking::catch_unwind::do_call::<&dyn core[7d3afe705a026c7c]::ops::function::Fn<(), Output = i32> + core[7d3afe705a026c7c]::marker::Sync + core[7d3afe705a026c7c]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/panicking.rs:581:40
[INFO] [stderr]     39:     0x62153bcd1d64 - std[fb0be1524d814480]::panicking::catch_unwind::<i32, &dyn core[7d3afe705a026c7c]::ops::function::Fn<(), Output = i32> + core[7d3afe705a026c7c]::marker::Sync + core[7d3afe705a026c7c]::panic::unwind_safe::RefUnwindSafe>
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/panicking.rs:544:19
[INFO] [stderr]     40:     0x62153bcd1d64 - std[fb0be1524d814480]::panic::catch_unwind::<&dyn core[7d3afe705a026c7c]::ops::function::Fn<(), Output = i32> + core[7d3afe705a026c7c]::marker::Sync + core[7d3afe705a026c7c]::panic::unwind_safe::RefUnwindSafe, i32>
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/panic.rs:359:14
[INFO] [stderr]     41:     0x62153bcd1d64 - std[fb0be1524d814480]::rt::lang_start_internal::{closure#0}
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/rt.rs:175:24
[INFO] [stderr]     42:     0x62153bcd1d64 - std[fb0be1524d814480]::panicking::catch_unwind::do_call::<std[fb0be1524d814480]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/panicking.rs:581:40
[INFO] [stderr]     43:     0x62153bcd1d64 - std[fb0be1524d814480]::panicking::catch_unwind::<isize, std[fb0be1524d814480]::rt::lang_start_internal::{closure#0}>
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/panicking.rs:544:19
[INFO] [stderr]     44:     0x62153bcd1d64 - std[fb0be1524d814480]::panic::catch_unwind::<std[fb0be1524d814480]::rt::lang_start_internal::{closure#0}, isize>
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/panic.rs:359:14
[INFO] [stderr]     45:     0x62153bcd1d64 - std[fb0be1524d814480]::rt::lang_start_internal
[INFO] [stderr]                                  at /rustc/88b8a1c6e3a6f6f8a2ed6b6a9a74e0ef1862f72c/library/std/src/rt.rs:171:5
[INFO] [stderr]     46:     0x62153b943351 - std[fb0be1524d814480]::rt::lang_start::<()>
[INFO] [stderr]     47:     0x62153b944775 - main
[INFO] [stderr]     48:     0x75cebc9841ca - <unknown>
[INFO] [stderr]     49:     0x75cebc98428b - __libc_start_main
[INFO] [stderr]     50:     0x62153b942dd5 - _start
[INFO] [stderr]     51:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "a75c0389510bffd08f04a1bbccaec693df7849d04c021563a9d7da71d5cef38b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a75c0389510bffd08f04a1bbccaec693df7849d04c021563a9d7da71d5cef38b", kill_on_drop: false }`
[INFO] [stdout] a75c0389510bffd08f04a1bbccaec693df7849d04c021563a9d7da71d5cef38b