[INFO] fetching crate tweakster 0.0.3...
[INFO] testing tweakster-0.0.3 against try#b83b707f97d809763b7861afa7638871f3339a33 for pr-145838-1
[INFO] extracting crate tweakster 0.0.3 into /workspace/builds/worker-0-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-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate tweakster 0.0.3 on toolchain b83b707f97d809763b7861afa7638871f3339a33
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "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" "+b83b707f97d809763b7861afa7638871f3339a33" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3752a868bc313b3dca06c81fb5c8658bd5b94d83450d3c16c998d228b3363b7b
[INFO] running `Command { std: "docker" "start" "-a" "3752a868bc313b3dca06c81fb5c8658bd5b94d83450d3c16c998d228b3363b7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3752a868bc313b3dca06c81fb5c8658bd5b94d83450d3c16c998d228b3363b7b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3752a868bc313b3dca06c81fb5c8658bd5b94d83450d3c16c998d228b3363b7b", kill_on_drop: false }`
[INFO] [stdout] 3752a868bc313b3dca06c81fb5c8658bd5b94d83450d3c16c998d228b3363b7b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+b83b707f97d809763b7861afa7638871f3339a33" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d4275a2a260e74501c6677789b752d671a86b081c7357410de4e51499b4a6378
[INFO] running `Command { std: "docker" "start" "-a" "d4275a2a260e74501c6677789b752d671a86b081c7357410de4e51499b4a6378", 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 regex-syntax v0.6.27
[INFO] [stderr]    Compiling bindgen v0.59.2
[INFO] [stderr]    Compiling peeking_take_while v0.1.2
[INFO] [stderr]    Compiling rustc-hash v1.1.0
[INFO] [stderr]    Compiling libloading v0.7.3
[INFO] [stderr]    Compiling lazycell v1.3.0
[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 unicode-segmentation v1.9.0
[INFO] [stderr]    Compiling serde v1.0.136
[INFO] [stderr]    Compiling once_cell v1.13.0
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling plain v0.2.3
[INFO] [stderr]    Compiling tracing-core v0.1.28
[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 clang-sys v1.3.3
[INFO] [stderr]    Compiling quote v1.0.18
[INFO] [stderr]    Compiling nom v7.1.1
[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 thiserror-impl v1.0.31
[INFO] [stderr]    Compiling scroll_derive v0.10.5
[INFO] [stderr]    Compiling tracing-attributes v0.1.22
[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 scroll v0.10.2
[INFO] [stderr]    Compiling goblin v0.2.3
[INFO] [stderr]    Compiling structopt v0.3.26
[INFO] [stderr]    Compiling thiserror v1.0.31
[INFO] [stderr]    Compiling tracing v0.1.35
[INFO] [stderr]    Compiling loopdev v0.4.0
[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' (1122) 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:     0x6519792193e2 - std::backtrace_rs::backtrace::libunwind::trace::h589a96ef7638b383
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/../../backtrace/src/backtrace/libunwind.rs:117:9
[INFO] [stderr]      1:     0x6519792193e2 - std::backtrace_rs::backtrace::trace_unsynchronized::h23a30a7548c40de4
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/../../backtrace/src/backtrace/mod.rs:66:14
[INFO] [stderr]      2:     0x6519792193e2 - std::sys::backtrace::_print_fmt::h87dabd6535c8c07a
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/backtrace.rs:66:9
[INFO] [stderr]      3:     0x6519792193e2 - <std::sys::backtrace::BacktraceLock::print::DisplayBacktrace as core::fmt::Display>::fmt::hffd20ad4e5eca8ab
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/backtrace.rs:39:26
[INFO] [stderr]      4:     0x65197922a5ef - core::fmt::rt::Argument::fmt::h75c83e3fd5ce2419
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/fmt/rt.rs:173:76
[INFO] [stderr]      5:     0x65197922a5ef - core::fmt::write::h6d9d3a7cfd7b84f5
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/fmt/mod.rs:1468:25
[INFO] [stderr]      6:     0x6519791ebfa3 - std::io::default_write_fmt::ha7130bf70117e1da
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/io/mod.rs:639:11
[INFO] [stderr]      7:     0x6519791ebfa3 - std::io::Write::write_fmt::h22459ad26fe60c51
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/io/mod.rs:1954:13
[INFO] [stderr]      8:     0x6519791f69d2 - std::sys::backtrace::BacktraceLock::print::hb28797143397220e
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/backtrace.rs:42:9
[INFO] [stderr]      9:     0x6519791f94bf - std::panicking::default_hook::{{closure}}::h7555113b62983743
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:301:27
[INFO] [stderr]     10:     0x6519791f9319 - std::panicking::default_hook::h2714b564abe8d914
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:328:9
[INFO] [stderr]     11:     0x6519791f9b45 - std::panicking::panic_with_hook::h190dc82263685ec5
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:834:13
[INFO] [stderr]     12:     0x6519791f992a - std::panicking::panic_handler::{{closure}}::h8b036a1b366643ac
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:707:13
[INFO] [stderr]     13:     0x6519791f6b09 - std::sys::backtrace::__rust_end_short_backtrace::h45affcfc0c830da8
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/sys/backtrace.rs:174:18
[INFO] [stderr]     14:     0x6519791e028d - __rustc[9b67c8562bba447b]::rust_begin_unwind
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:698:5
[INFO] [stderr]     15:     0x6519792344b0 - core::panicking::panic_fmt::hc084f85b1e76c16d
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/panicking.rs:75:14
[INFO] [stderr]     16:     0x6519791d022f - proc_macro2::fallback::validate_ident::hfe4f02eaa87db1bd
[INFO] [stderr]     17:     0x6519791d0461 - proc_macro2::fallback::Ident::_new::hc3c26b6ceec68cb2
[INFO] [stderr]     18:     0x6519791d041f - proc_macro2::fallback::Ident::new::hcabc2f6de0259cab
[INFO] [stderr]     19:     0x6519791cf2b8 - proc_macro2::imp::Ident::new::h1a0af02b5e652c5f
[INFO] [stderr]     20:     0x6519791c5038 - proc_macro2::Ident::new::h2115603a4b0db1f6
[INFO] [stderr]     21:     0x65197901307f - bindgen::ir::context::BindgenContext::rust_ident_raw::h2d12d3cb62d1909e
[INFO] [stderr]     22:     0x651979010ef0 - bindgen::ir::context::BindgenContext::rust_ident::ha6cc0bd0b6d32853
[INFO] [stderr]     23:     0x651978ff6e8e - <bindgen::ir::enum_ty::Enum as bindgen::codegen::CodeGenerator>::codegen::h071cf8a62aaf767a
[INFO] [stderr]     24:     0x651978fef8a6 - <bindgen::ir::ty::Type as bindgen::codegen::CodeGenerator>::codegen::h0dbbbe2880a9a2aa
[INFO] [stderr]     25:     0x651978f5fc5d - <bindgen::ir::item::Item as bindgen::codegen::CodeGenerator>::codegen::h4567e4b47d240259
[INFO] [stderr]     26:     0x651978fd42f5 - <bindgen::ir::module::Module as bindgen::codegen::CodeGenerator>::codegen::{{closure}}::hb9cea7a6a78f5967
[INFO] [stderr]     27:     0x651978faf055 - <bindgen::ir::module::Module as bindgen::codegen::CodeGenerator>::codegen::h228750987132c89d
[INFO] [stderr]     28:     0x651978f5fc42 - <bindgen::ir::item::Item as bindgen::codegen::CodeGenerator>::codegen::h4567e4b47d240259
[INFO] [stderr]     29:     0x651978fe30fe - bindgen::codegen::codegen::{{closure}}::he8d36e785a38971d
[INFO] [stderr]     30:     0x65197901d868 - bindgen::ir::context::BindgenContext::gen::h2cf47cb1f51fb0ac
[INFO] [stderr]     31:     0x651978fe2a0d - bindgen::codegen::codegen::h068df7c5cebf0478
[INFO] [stderr]     32:     0x651978fc682e - bindgen::Bindings::generate::h84dec0ad9cc9d49e
[INFO] [stderr]     33:     0x651978fc37eb - bindgen::Builder::generate::h5c61dbcb85f69175
[INFO] [stderr]     34:     0x651978ee8596 - build_script_build::main::he9451439175d1aa1
[INFO] [stderr]     35:     0x651978ee90b3 - core::ops::function::FnOnce::call_once::h86f91a380728a9d9
[INFO] [stderr]     36:     0x651978ee8f26 - std::sys::backtrace::__rust_begin_short_backtrace::ha1ae912f5c07fe5a
[INFO] [stderr]     37:     0x651978ee8f09 - std::rt::lang_start::{{closure}}::hc051977ff1b1a1e2
[INFO] [stderr]     38:     0x6519791edac0 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hcc75fa61d21ecbe5
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/core/src/ops/function.rs:290:21
[INFO] [stderr]     39:     0x6519791edac0 - std::panicking::catch_unwind::do_call::h38c051a071ca3bc0
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:590:40
[INFO] [stderr]     40:     0x6519791edac0 - std::panicking::catch_unwind::hede2a2f6f4519f78
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:553:19
[INFO] [stderr]     41:     0x6519791edac0 - std::panic::catch_unwind::h94765a19f52c0a43
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panic.rs:359:14
[INFO] [stderr]     42:     0x6519791edac0 - std::rt::lang_start_internal::{{closure}}::hb89c21d557706591
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/rt.rs:175:24
[INFO] [stderr]     43:     0x6519791edac0 - std::panicking::catch_unwind::do_call::h50685f05733aeeef
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:590:40
[INFO] [stderr]     44:     0x6519791edac0 - std::panicking::catch_unwind::hf9ba9716b02e6738
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panicking.rs:553:19
[INFO] [stderr]     45:     0x6519791edac0 - std::panic::catch_unwind::h29770e281302b24d
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/panic.rs:359:14
[INFO] [stderr]     46:     0x6519791edac0 - std::rt::lang_start_internal::hd5573b1f5f705a2a
[INFO] [stderr]                                  at /rustc/b83b707f97d809763b7861afa7638871f3339a33/library/std/src/rt.rs:171:5
[INFO] [stderr]     47:     0x651978ee8ef1 - std::rt::lang_start::h41b697fd5514c221
[INFO] [stderr]     48:     0x651978eea225 - main
[INFO] [stderr]     49:     0x715cc5ea81ca - <unknown>
[INFO] [stderr]     50:     0x715cc5ea828b - __libc_start_main
[INFO] [stderr]     51:     0x651978ee8325 - _start
[INFO] [stderr]     52:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d4275a2a260e74501c6677789b752d671a86b081c7357410de4e51499b4a6378", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d4275a2a260e74501c6677789b752d671a86b081c7357410de4e51499b4a6378", kill_on_drop: false }`
[INFO] [stdout] d4275a2a260e74501c6677789b752d671a86b081c7357410de4e51499b4a6378