[INFO] fetching crate tweakster 0.0.3...
[INFO] testing tweakster-0.0.3 against try#2440211fe03bc45c89b6dc1a3df18382ce91e32b for pr-146098-1
[INFO] extracting crate tweakster 0.0.3 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate tweakster 0.0.3
[INFO] finished tweaking crates.io crate tweakster 0.0.3
[INFO] tweaked toml for crates.io crate tweakster 0.0.3 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tweakster 0.0.3 on toolchain 2440211fe03bc45c89b6dc1a3df18382ce91e32b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate tweakster 0.0.3 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" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] ed75c4b9fdc708320aa246e336c389c463281e6721c96a361e3d027dfcdf71bf
[INFO] running `Command { std: "docker" "start" "-a" "ed75c4b9fdc708320aa246e336c389c463281e6721c96a361e3d027dfcdf71bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "ed75c4b9fdc708320aa246e336c389c463281e6721c96a361e3d027dfcdf71bf", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ed75c4b9fdc708320aa246e336c389c463281e6721c96a361e3d027dfcdf71bf", kill_on_drop: false }`
[INFO] [stdout] ed75c4b9fdc708320aa246e336c389c463281e6721c96a361e3d027dfcdf71bf
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+2440211fe03bc45c89b6dc1a3df18382ce91e32b" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 256343aa74aeb2d06d405e7500bd3d75b92859ccdce74b29f13a1862d4a5e056
[INFO] running `Command { std: "docker" "start" "-a" "256343aa74aeb2d06d405e7500bd3d75b92859ccdce74b29f13a1862d4a5e056", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling glob v0.3.0
[INFO] [stderr]    Compiling libc v0.2.123
[INFO] [stderr]    Compiling bitflags v1.3.2
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling bindgen v0.59.2
[INFO] [stderr]    Compiling libloading v0.7.3
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling once_cell v1.13.0
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling log v0.4.17
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling tracing-core v0.1.28
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling clang-sys v1.3.3
[INFO] [stderr]    Compiling pin-project-lite v0.2.9
[INFO] [stderr]    Compiling nom v7.1.1
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling plain v0.2.3
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling errno v0.2.8
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling tracing-attributes v0.1.22
[INFO] [stderr]    Compiling scroll_derive v0.10.5
[INFO] [stderr]    Compiling thiserror-impl v1.0.31
[INFO] [stderr]    Compiling merge_derive v0.1.0
[INFO] [stderr]    Compiling smart-default v0.6.0
[INFO] [stderr]    Compiling structopt-derive v0.4.18
[INFO] [stderr]    Compiling loopdev v0.4.0
[INFO] [stderr]    Compiling merge v0.1.0
[INFO] [stderr]    Compiling scroll v0.10.2
[INFO] [stderr]    Compiling tracing v0.1.35
[INFO] [stderr]    Compiling structopt v0.3.26
[INFO] [stderr]    Compiling goblin v0.2.3
[INFO] [stderr] error: failed to run custom build command for `loopdev v0.4.0`
[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-635ae35760257e9b/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr] 
[INFO] [stderr]   thread 'main' (1014) panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-1949cf8c6b5b557f/proc-macro2-1.0.37/src/fallback.rs:701:9:
[INFO] [stderr]   "enum_(unnamed_at_/usr/include/linux/loop_h_16_1)" is not a valid Ident
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5b851c14cd72 - std::backtrace_rs::backtrace::libunwind::trace::h22a6a535a50603c6
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x5b851c14cd72 - std::backtrace_rs::backtrace::trace_unsynchronized::h2503a4f30dbfbaa2
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x5b851c14cd72 - std::sys::backtrace::_print_fmt::hec54e31f36456895
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x5b851c14cd72 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hb1988e8b50fa5f19
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x5b851c15e07f - core::fmt::rt::Argument::fmt::h3118a66e1a57a586
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x5b851c15e07f - core::fmt::write::hcd056e06a609f600
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/core/src/fmt/mod.rs:1468:25
[INFO] [stderr]      6:     0x5b851c11f431 - std::io::default_write_fmt::h45f0f9de0268fdcb
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x5b851c11f431 - std::io::Write::write_fmt::hc685c74e0b8ce55d
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x5b851c129de2 - std::sys::backtrace::BacktraceLock::print::h69f50ba7cfff8317
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x5b851c12c91f - std::panicking::default_hook::{{closure}}::hfa978eb2255ab3ab
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/panicking.rs:301:27
[INFO] [stderr]     10:     0x5b851c12c779 - std::panicking::default_hook::h09da2eaf8f1deadd
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/panicking.rs:328:9
[INFO] [stderr]     11:     0x5b851c12d055 - std::panicking::panic_with_hook::h13c40d280d130fd3
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/panicking.rs:834:13
[INFO] [stderr]     12:     0x5b851c12ce3a - std::panicking::panic_handler::{{closure}}::hd79d22e8a1d3b951
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/panicking.rs:707:13
[INFO] [stderr]     13:     0x5b851c129f29 - std::sys::backtrace::__rust_end_short_backtrace::h83414d1ec69cf3a6
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x5b851c1136cd - __rustc[b78aa6c7b08e5dc4]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/panicking.rs:698:5
[INFO] [stderr]     15:     0x5b851c167f50 - core::panicking::panic_fmt::h326b75cf8ee01b13
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/core/src/panicking.rs:78:14
[INFO] [stderr]     16:     0x5b851c105a7f - proc_macro2::fallback::validate_ident::h77faa3d99df66759
[INFO] [stderr]     17:     0x5b851c105cb1 - proc_macro2::fallback::Ident::_new::h6f8bce3b6ad50e1f
[INFO] [stderr]     18:     0x5b851c105c6f - proc_macro2::fallback::Ident::new::h18ffae17ea9f8b96
[INFO] [stderr]     19:     0x5b851c104b08 - proc_macro2::imp::Ident::new::hf9b74dce521cb069
[INFO] [stderr]     20:     0x5b851c0fb7c8 - proc_macro2::Ident::new::hbb4099ea147897cf
[INFO] [stderr]     21:     0x5b851bef819f - bindgen::ir::context::BindgenContext::rust_ident_raw::h734a2602d04eeb8d
[INFO] [stderr]     22:     0x5b851bef6010 - bindgen::ir::context::BindgenContext::rust_ident::he503b0a96162405c
[INFO] [stderr]     23:     0x5b851be9aefe - <bindgen::ir::enum_ty::Enum as bindgen::codegen::CodeGenerator>::codegen::hc4831093629feb68
[INFO] [stderr]     24:     0x5b851be97946 - <bindgen::ir::ty::Type as bindgen::codegen::CodeGenerator>::codegen::h473f66dbad9d3768
[INFO] [stderr]     25:     0x5b851bf4ea8d - <bindgen::ir::item::Item as bindgen::codegen::CodeGenerator>::codegen::h3e048f1e2cd743a1
[INFO] [stderr]     26:     0x5b851bf341b5 - <bindgen::ir::module::Module as bindgen::codegen::CodeGenerator>::codegen::{{closure}}::h81fe49696fdaef05
[INFO] [stderr]     27:     0x5b851bf2c8c5 - <bindgen::ir::module::Module as bindgen::codegen::CodeGenerator>::codegen::hef108e79e835b2c3
[INFO] [stderr]     28:     0x5b851bf4ea72 - <bindgen::ir::item::Item as bindgen::codegen::CodeGenerator>::codegen::h3e048f1e2cd743a1
[INFO] [stderr]     29:     0x5b851bf4343e - bindgen::codegen::codegen::{{closure}}::h458ac1b850f54fb8
[INFO] [stderr]     30:     0x5b851bf02988 - bindgen::ir::context::BindgenContext::gen::h0b7722b543126fd5
[INFO] [stderr]     31:     0x5b851bf42d4d - bindgen::codegen::codegen::h5975ac5a5d02ccb5
[INFO] [stderr]     32:     0x5b851be78cde - bindgen::Bindings::generate::h933b30f22d8ebd0f
[INFO] [stderr]     33:     0x5b851be75c9b - bindgen::Builder::generate::h71a71cd28e3e309d
[INFO] [stderr]     34:     0x5b851be1e406 - build_script_build::main::h08c52d16d4b707e6
[INFO] [stderr]     35:     0x5b851be1ef13 - core::ops::function::FnOnce::call_once::hec788deccdb0f3be
[INFO] [stderr]     36:     0x5b851be1ed86 - std::sys::backtrace::__rust_begin_short_backtrace::h033890364812f20c
[INFO] [stderr]     37:     0x5b851be1ed69 - std::rt::lang_start::{{closure}}::h77154e89ec648752
[INFO] [stderr]     38:     0x5b851c120cf0 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h387c5546b57ddfde
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/core/src/ops/function.rs:287:21
[INFO] [stderr]     39:     0x5b851c120cf0 - std::panicking::catch_unwind::do_call::hf9fdd250c001d1cd
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/panicking.rs:590:40
[INFO] [stderr]     40:     0x5b851c120cf0 - std::panicking::catch_unwind::hc213e1339e7313f3
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/panicking.rs:553:19
[INFO] [stderr]     41:     0x5b851c120cf0 - std::panic::catch_unwind::h7e2e13142bd98e67
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/panic.rs:359:14
[INFO] [stderr]     42:     0x5b851c120cf0 - std::rt::lang_start_internal::{{closure}}::ha8eea67def213c83
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/rt.rs:175:24
[INFO] [stderr]     43:     0x5b851c120cf0 - std::panicking::catch_unwind::do_call::hc6f04b090be4f56e
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/panicking.rs:590:40
[INFO] [stderr]     44:     0x5b851c120cf0 - std::panicking::catch_unwind::hfb8ae23b2e34f7c2
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/panicking.rs:553:19
[INFO] [stderr]     45:     0x5b851c120cf0 - std::panic::catch_unwind::hf2cef20feb3addd6
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/panic.rs:359:14
[INFO] [stderr]     46:     0x5b851c120cf0 - std::rt::lang_start_internal::h1ca864a6b9355c57
[INFO] [stderr]                                  at /rustc/2440211fe03bc45c89b6dc1a3df18382ce91e32b/library/std/src/rt.rs:171:5
[INFO] [stderr]     47:     0x5b851be1ed51 - std::rt::lang_start::h059ed2614e82ef6d
[INFO] [stderr]     48:     0x5b851be20095 - main
[INFO] [stderr]     49:     0x7c67e7a951ca - <unknown>
[INFO] [stderr]     50:     0x7c67e7a9528b - __libc_start_main
[INFO] [stderr]     51:     0x5b851be1e195 - _start
[INFO] [stderr]     52:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "256343aa74aeb2d06d405e7500bd3d75b92859ccdce74b29f13a1862d4a5e056", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "256343aa74aeb2d06d405e7500bd3d75b92859ccdce74b29f13a1862d4a5e056", kill_on_drop: false }`
[INFO] [stdout] 256343aa74aeb2d06d405e7500bd3d75b92859ccdce74b29f13a1862d4a5e056