[INFO] fetching crate tweakster 0.0.3...
[INFO] testing tweakster-0.0.3 against master#cdb45c87e2cd43495379f7e867e3cc15dcee9f93 for pr-145838-1
[INFO] extracting crate tweakster 0.0.3 into /workspace/builds/worker-0-tc1/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-0-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate tweakster 0.0.3 on toolchain cdb45c87e2cd43495379f7e867e3cc15dcee9f93
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "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" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded merge_derive v0.1.0
[INFO] [stderr]   Downloaded loopdev v0.4.0
[INFO] [stderr]   Downloaded sys-mount v1.5.1
[INFO] [stderr]   Downloaded merge v0.1.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3b904f5e8143847e08e9ff875f40ab1862f8dd4977b6869044e4024fd826a1bc
[INFO] running `Command { std: "docker" "start" "-a" "3b904f5e8143847e08e9ff875f40ab1862f8dd4977b6869044e4024fd826a1bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3b904f5e8143847e08e9ff875f40ab1862f8dd4977b6869044e4024fd826a1bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b904f5e8143847e08e9ff875f40ab1862f8dd4977b6869044e4024fd826a1bc", kill_on_drop: false }`
[INFO] [stdout] 3b904f5e8143847e08e9ff875f40ab1862f8dd4977b6869044e4024fd826a1bc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+cdb45c87e2cd43495379f7e867e3cc15dcee9f93" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 403e6f41c772add6b32d6d5b7e86d58e4fe60b5d7b0ad88010ca9072f8437cae
[INFO] running `Command { std: "docker" "start" "-a" "403e6f41c772add6b32d6d5b7e86d58e4fe60b5d7b0ad88010ca9072f8437cae", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[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 minimal-lexical v0.2.1
[INFO] [stderr]    Compiling bindgen v0.59.2
[INFO] [stderr]    Compiling regex-syntax v0.6.27
[INFO] [stderr]    Compiling lazycell v1.3.0
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling libloading v0.7.3
[INFO] [stderr]    Compiling shlex v1.1.0
[INFO] [stderr]    Compiling serde_derive v1.0.136
[INFO] [stderr]    Compiling num-traits v0.2.14
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling once_cell v1.13.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling tracing-core v0.1.28
[INFO] [stderr]    Compiling plain v0.2.3
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling clang-sys v1.3.3
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling heck v0.3.3
[INFO] [stderr]    Compiling errno v0.2.8
[INFO] [stderr]    Compiling atty v0.2.14
[INFO] [stderr]    Compiling clap v2.34.0
[INFO] [stderr]    Compiling nom v7.1.1
[INFO] [stderr]    Compiling regex v1.6.0
[INFO] [stderr]    Compiling cexpr v0.6.0
[INFO] [stderr]    Compiling scroll_derive v0.10.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.22
[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 merge v0.1.0
[INFO] [stderr]    Compiling loopdev v0.4.0
[INFO] [stderr]    Compiling scroll v0.10.2
[INFO] [stderr]    Compiling goblin v0.2.3
[INFO] [stderr]    Compiling thiserror v1.0.31
[INFO] [stderr]    Compiling structopt v0.3.26
[INFO] [stderr]    Compiling tracing v0.1.35
[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' (990) 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:     0x5dd275baad12 - std::backtrace_rs::backtrace::libunwind::trace::h7cddb8376417e7cc
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x5dd275baad12 - std::backtrace_rs::backtrace::trace_unsynchronized::hb4e41acf4b349ff1
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x5dd275baad12 - std::sys::backtrace::_print_fmt::h1222b80910ba6eb5
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x5dd275baad12 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::h5bb8a979ba5db788
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x5dd275bbbf1f - core::fmt::rt::Argument::fmt::h2ee2c138a50a7796
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x5dd275bbbf1f - core::fmt::write::h1e0dbf07fe3990bd
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/fmt/mod.rs:1468:25
[INFO] [stderr]      6:     0x5dd275b7da03 - std::io::default_write_fmt::hb0810a37865e52a5
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x5dd275b7da03 - std::io::Write::write_fmt::h12c8908aaac7ca22
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x5dd275b88302 - std::sys::backtrace::BacktraceLock::print::h788d486777205086
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x5dd275b8adef - std::panicking::default_hook::{{closure}}::ha7bdfeb5949fc0fa
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:301:27
[INFO] [stderr]     10:     0x5dd275b8ac49 - std::panicking::default_hook::h6dad75ec721846f4
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:328:9
[INFO] [stderr]     11:     0x5dd275b8b475 - std::panicking::panic_with_hook::hba00e869ada17676
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:834:13
[INFO] [stderr]     12:     0x5dd275b8b25a - std::panicking::panic_handler::{{closure}}::h3d21149c258e5ceb
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:707:13
[INFO] [stderr]     13:     0x5dd275b88439 - std::sys::backtrace::__rust_end_short_backtrace::h4f5d9b9dfb3e6ec1
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x5dd275b71bbd - __rustc[9a7a9f9af7564de1]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:698:5
[INFO] [stderr]     15:     0x5dd275bc5de0 - core::panicking::panic_fmt::h78e817a90331d98b
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/panicking.rs:75:14
[INFO] [stderr]     16:     0x5dd275b61b5f - proc_macro2::fallback::validate_ident::h4c44857beeb36cc2
[INFO] [stderr]     17:     0x5dd275b61d91 - proc_macro2::fallback::Ident::_new::h9d875745b585801c
[INFO] [stderr]     18:     0x5dd275b61d4f - proc_macro2::fallback::Ident::new::h859c87727dfbd7b7
[INFO] [stderr]     19:     0x5dd275b60be8 - proc_macro2::imp::Ident::new::h2ef6a29eeccb32a3
[INFO] [stderr]     20:     0x5dd275b56898 - proc_macro2::Ident::new::h1d4594abf0e31730
[INFO] [stderr]     21:     0x5dd2759a621f - bindgen::ir::context::BindgenContext::rust_ident_raw::h8bebcd33106f8fbf
[INFO] [stderr]     22:     0x5dd2759a4070 - bindgen::ir::context::BindgenContext::rust_ident::hec23cf3bfdb86c41
[INFO] [stderr]     23:     0x5dd27598a17e - <bindgen::ir::enum_ty::Enum as bindgen::codegen::CodeGenerator>::codegen::h1e14c964321f7934
[INFO] [stderr]     24:     0x5dd275982c76 - <bindgen::ir::ty::Type as bindgen::codegen::CodeGenerator>::codegen::hf241ff0a9df7d5b0
[INFO] [stderr]     25:     0x5dd2758f274d - <bindgen::ir::item::Item as bindgen::codegen::CodeGenerator>::codegen::hb989c548febfdb33
[INFO] [stderr]     26:     0x5dd2759675d5 - <bindgen::ir::module::Module as bindgen::codegen::CodeGenerator>::codegen::{{closure}}::he270f4716914b762
[INFO] [stderr]     27:     0x5dd2759418c5 - <bindgen::ir::module::Module as bindgen::codegen::CodeGenerator>::codegen::h7337dd590f9d0af0
[INFO] [stderr]     28:     0x5dd2758f2732 - <bindgen::ir::item::Item as bindgen::codegen::CodeGenerator>::codegen::hb989c548febfdb33
[INFO] [stderr]     29:     0x5dd2759763de - bindgen::codegen::codegen::{{closure}}::h6e96138ccf3a2333
[INFO] [stderr]     30:     0x5dd2759b09e8 - bindgen::ir::context::BindgenContext::gen::h3e6c41ff0671308b
[INFO] [stderr]     31:     0x5dd275975ced - bindgen::codegen::codegen::hcead6682e56268a0
[INFO] [stderr]     32:     0x5dd27595972e - bindgen::Bindings::generate::h8a59613aa1b1a060
[INFO] [stderr]     33:     0x5dd2759566eb - bindgen::Builder::generate::hd0869ea7d8ccf022
[INFO] [stderr]     34:     0x5dd27587af56 - build_script_build::main::h189f0c813aba51cd
[INFO] [stderr]     35:     0x5dd27587ba33 - core::ops::function::FnOnce::call_once::h141a912ce3d547e8
[INFO] [stderr]     36:     0x5dd27587b8e6 - std::sys::backtrace::__rust_begin_short_backtrace::h5a752f332c65bb7a
[INFO] [stderr]     37:     0x5dd27587b8c9 - std::rt::lang_start::{{closure}}::hd8307a0ce2b894d9
[INFO] [stderr]     38:     0x5dd275b7f3f0 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h1dc0a50e6295ec78
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/core/src/ops/function.rs:290:21
[INFO] [stderr]     39:     0x5dd275b7f3f0 - std::panicking::catch_unwind::do_call::h209f742e9999044e
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:590:40
[INFO] [stderr]     40:     0x5dd275b7f3f0 - std::panicking::catch_unwind::h508c6e2aa6d72749
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:553:19
[INFO] [stderr]     41:     0x5dd275b7f3f0 - std::panic::catch_unwind::hebcbb24aa9914693
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panic.rs:359:14
[INFO] [stderr]     42:     0x5dd275b7f3f0 - std::rt::lang_start_internal::{{closure}}::h703cbe32967ef209
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/rt.rs:175:24
[INFO] [stderr]     43:     0x5dd275b7f3f0 - std::panicking::catch_unwind::do_call::hf50f2a30bce4e10b
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:590:40
[INFO] [stderr]     44:     0x5dd275b7f3f0 - std::panicking::catch_unwind::hac448d7e3b12daa3
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panicking.rs:553:19
[INFO] [stderr]     45:     0x5dd275b7f3f0 - std::panic::catch_unwind::ha9d74a13d77f299c
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/panic.rs:359:14
[INFO] [stderr]     46:     0x5dd275b7f3f0 - std::rt::lang_start_internal::ha26d244788d1956d
[INFO] [stderr]                                  at /rustc/cdb45c87e2cd43495379f7e867e3cc15dcee9f93/library/std/src/rt.rs:171:5
[INFO] [stderr]     47:     0x5dd27587b8b1 - std::rt::lang_start::h8364a2882cc59c79
[INFO] [stderr]     48:     0x5dd27587cbe5 - main
[INFO] [stderr]     49:     0x72e11ef991ca - <unknown>
[INFO] [stderr]     50:     0x72e11ef9928b - __libc_start_main
[INFO] [stderr]     51:     0x5dd27587ace5 - _start
[INFO] [stderr]     52:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "403e6f41c772add6b32d6d5b7e86d58e4fe60b5d7b0ad88010ca9072f8437cae", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "403e6f41c772add6b32d6d5b7e86d58e4fe60b5d7b0ad88010ca9072f8437cae", kill_on_drop: false }`
[INFO] [stdout] 403e6f41c772add6b32d6d5b7e86d58e4fe60b5d7b0ad88010ca9072f8437cae