[INFO] cloning repository https://github.com/aurabindo/muco
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/aurabindo/muco" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faurabindo%2Fmuco", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faurabindo%2Fmuco'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d672b018cd65d8ac48926c7d6016d76967ac09d9
[INFO] testing aurabindo/muco against beta-2023-04-20 for beta-1.70-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Faurabindo%2Fmuco" "/workspace/builds/worker-3-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/aurabindo/muco on toolchain beta-2023-04-20
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/aurabindo/muco
[INFO] finished tweaking git repo https://github.com/aurabindo/muco
[INFO] tweaked toml for git repo https://github.com/aurabindo/muco written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/aurabindo/muco 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" "+beta-2023-04-20" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded my-pretty-failure v0.1.2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] baee5d819da1d8b3474780ed76d45a293b2bd559e100f121fd414b348ed8ef56
[INFO] running `Command { std: "docker" "start" "-a" "baee5d819da1d8b3474780ed76d45a293b2bd559e100f121fd414b348ed8ef56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "baee5d819da1d8b3474780ed76d45a293b2bd559e100f121fd414b348ed8ef56", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baee5d819da1d8b3474780ed76d45a293b2bd559e100f121fd414b348ed8ef56", kill_on_drop: false }`
[INFO] [stdout] baee5d819da1d8b3474780ed76d45a293b2bd559e100f121fd414b348ed8ef56
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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=warn" "-e" "RUSTDOCFLAGS=--cap-lints=warn" "-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@sha256:5ff2268d62e97bff2cde7d5815dd6ed5b47097566f13b8d0ca110b04b60e07ed" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2023-04-20" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30a4d62d8e9268dafd293f068320d42b149b567d0a5fa51d82e703add67feac6
[INFO] running `Command { std: "docker" "start" "-a" "30a4d62d8e9268dafd293f068320d42b149b567d0a5fa51d82e703add67feac6", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.62
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.1
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]    Compiling cc v1.0.40
[INFO] [stderr]    Compiling syn v0.15.44
[INFO] [stderr]    Compiling syn v1.0.3
[INFO] [stderr]    Compiling cfg-if v0.1.9
[INFO] [stderr]    Compiling memchr v2.5.0
[INFO] [stderr]    Compiling failure_derive v0.1.5
[INFO] [stderr]    Compiling serde v1.0.99
[INFO] [stderr]    Compiling bitflags v1.1.0
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]    Compiling rustc-demangle v0.1.16
[INFO] [stderr]    Compiling unicode-width v0.1.6
[INFO] [stderr]    Compiling quick-error v1.2.2
[INFO] [stderr]    Compiling regex-syntax v0.6.26
[INFO] [stderr]    Compiling textwrap v0.11.0
[INFO] [stderr]    Compiling termcolor v1.0.5
[INFO] [stderr]    Compiling humantime v1.2.0
[INFO] [stderr]    Compiling same-file v1.0.5
[INFO] [stderr]    Compiling vec_map v0.8.1
[INFO] [stderr]    Compiling ansi_term v0.11.0
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling walkdir v2.2.9
[INFO] [stderr]    Compiling xdg v2.2.0
[INFO] [stderr]    Compiling backtrace-sys v0.1.31
[INFO] [stderr]    Compiling atty v0.2.13
[INFO] [stderr]    Compiling aho-corasick v0.7.18
[INFO] [stderr]    Compiling quote v1.0.2
[INFO] [stderr]    Compiling clap v2.33.0
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling backtrace v0.3.35
[INFO] [stderr]    Compiling regex v1.5.5
[INFO] [stderr]    Compiling env_logger v0.6.2
[INFO] [stderr]    Compiling serde_derive v1.0.99
[INFO] [stderr]    Compiling synstructure v0.10.2
[INFO] [stderr]    Compiling failure v0.1.5
[INFO] [stderr]    Compiling my-pretty-failure v0.1.2
[INFO] [stderr] thread 'rustc' panicked at 'assertion failed: pos.get() <= self.position()', compiler/rustc_metadata/src/rmeta/encoder.rs:433:9
[INFO] [stderr] stack backtrace:
[INFO] [stderr]    0:     0x7fdb532abcca - std::backtrace_rs::backtrace::libunwind::trace::h2f05d0192276a8f6
[INFO] [stderr]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stderr]    1:     0x7fdb532abcca - std::backtrace_rs::backtrace::trace_unsynchronized::hedc23dff7a1af150
[INFO] [stderr]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]    2:     0x7fdb532abcca - std::sys_common::backtrace::_print_fmt::h17541ef7592f3ce2
[INFO] [stderr]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:65:5
[INFO] [stderr]    3:     0x7fdb532abcca - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h20f75df5ab0c0792
[INFO] [stderr]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]    4:     0x7fdb533100cf - core::fmt::write::h78109e6f466b3af6
[INFO] [stderr]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/fmt/mod.rs:1254:17
[INFO] [stderr]    5:     0x7fdb5329e805 - std::io::Write::write_fmt::hc59e1b02dd273c8a
[INFO] [stderr]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/io/mod.rs:1698:15
[INFO] [stderr]    6:     0x7fdb532aba95 - std::sys_common::backtrace::_print::h8dac57a9f8fbf9a5
[INFO] [stderr]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]    7:     0x7fdb532aba95 - std::sys_common::backtrace::print::hf9ecbf41d1aa712f
[INFO] [stderr]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]    8:     0x7fdb532ae73e - std::panicking::default_hook::{{closure}}::h04c07acfc84ca028
[INFO] [stderr]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:269:22
[INFO] [stderr]    9:     0x7fdb532ae4e5 - std::panicking::default_hook::h01f6bb23e1eceb2c
[INFO] [stderr]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:288:9
[INFO] [stderr]   10:     0x7fdb5659ea35 - rustc_driver_impl[dc743aefd116e4d1]::DEFAULT_HOOK::{closure#0}::{closure#0}
[INFO] [stderr]   11:     0x7fdb532aef34 - <alloc::boxed::Box<F,A> as core::ops::function::Fn<Args>>::call::h3f2d6d8b14c4769f
[INFO] [stderr]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/alloc/src/boxed.rs:1987:9
[INFO] [stderr]   12:     0x7fdb532aef34 - std::panicking::rust_panic_with_hook::h2bb3722bbaf2f6df
[INFO] [stderr]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:695:13
[INFO] [stderr]   13:     0x7fdb532aec62 - std::panicking::begin_panic_handler::{{closure}}::h91bc7f36a4be011b
[INFO] [stderr]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:580:13
[INFO] [stderr]   14:     0x7fdb532ac136 - std::sys_common::backtrace::__rust_end_short_backtrace::h8b3d3717114f9e59
[INFO] [stderr]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/sys_common/backtrace.rs:150:18
[INFO] [stderr]   15:     0x7fdb532aea02 - rust_begin_unwind
[INFO] [stderr]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/std/src/panicking.rs:578:5
[INFO] [stderr]   16:     0x7fdb5330c443 - core::panicking::panic_fmt::hfd368e3fbdabea26
[INFO] [stderr]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/panicking.rs:67:14
[INFO] [stderr]   17:     0x7fdb5330c4dd - core::panicking::panic::h3f9042d09bd0bf2e
[INFO] [stderr]                                at /rustc/1b7dd2252b99671ce5d1cb9664c5f8636329436d/library/core/src/panicking.rs:117:5
[INFO] [stderr]   18:     0x7fdb55905831 - <rustc_span[1c1785c13b4703b1]::hygiene::HygieneEncodeContext>::encode::<(&mut rustc_metadata[265efc8f25a37d70]::rmeta::encoder::EncodeContext, &mut rustc_metadata[265efc8f25a37d70]::rmeta::table::TableBuilder<u32, core[5dceb995eb6c8c1c]::option::Option<rustc_metadata[265efc8f25a37d70]::rmeta::LazyValue<rustc_span[1c1785c13b4703b1]::hygiene::SyntaxContextData>>>, &mut rustc_metadata[265efc8f25a37d70]::rmeta::table::TableBuilder<rustc_span[1c1785c13b4703b1]::hygiene::ExpnIndex, core[5dceb995eb6c8c1c]::option::Option<rustc_metadata[265efc8f25a37d70]::rmeta::LazyValue<rustc_span[1c1785c13b4703b1]::hygiene::ExpnData>>>, &mut rustc_metadata[265efc8f25a37d70]::rmeta::table::TableBuilder<rustc_span[1c1785c13b4703b1]::hygiene::ExpnIndex, core[5dceb995eb6c8c1c]::option::Option<rustc_metadata[265efc8f25a37d70]::rmeta::LazyValue<rustc_span[1c1785c13b4703b1]::hygiene::ExpnHash>>>), <rustc_metadata[265efc8f25a37d70]::rmeta::encoder::EncodeContext>::encode_hygiene::{closure#0}, <rustc_metadata[265efc8f25a37d70]::rmeta::encoder::EncodeContext>::encode_hygiene::{closure#1}>
[INFO] [stderr]   19:     0x7fdb558e97a9 - <rustc_metadata[265efc8f25a37d70]::rmeta::encoder::EncodeContext>::encode_crate_root
[INFO] [stderr]   20:     0x7fdb5587bf89 - rustc_metadata[265efc8f25a37d70]::rmeta::encoder::encode_metadata_impl
[INFO] [stderr]   21:     0x7fdb5586f951 - rustc_data_structures[f629b2cb664ef839]::sync::join::<rustc_metadata[265efc8f25a37d70]::rmeta::encoder::encode_metadata::{closure#0}, rustc_metadata[265efc8f25a37d70]::rmeta::encoder::encode_metadata::{closure#1}, (), ()>
[INFO] [stderr]   22:     0x7fdb5586f66f - rustc_metadata[265efc8f25a37d70]::rmeta::encoder::encode_metadata
[INFO] [stderr]   23:     0x7fdb5586ea01 - rustc_metadata[265efc8f25a37d70]::fs::encode_and_write_metadata
[INFO] [stderr]   24:     0x7fdb55868190 - rustc_interface[a065794b3504c0d8]::passes::start_codegen
[INFO] [stderr]   25:     0x7fdb558635c4 - <rustc_middle[190fc878b70c43dc]::ty::context::GlobalCtxt>::enter::<<rustc_interface[a065794b3504c0d8]::queries::Queries>::ongoing_codegen::{closure#0}::{closure#0}, core[5dceb995eb6c8c1c]::result::Result<alloc[2e017f7c06744add]::boxed::Box<dyn core[5dceb995eb6c8c1c]::any::Any>, rustc_span[1c1785c13b4703b1]::ErrorGuaranteed>>
[INFO] [stderr]   26:     0x7fdb55861c68 - <rustc_interface[a065794b3504c0d8]::queries::Queries>::ongoing_codegen
[INFO] [stderr]   27:     0x7fdb55861471 - <rustc_interface[a065794b3504c0d8]::interface::Compiler>::enter::<rustc_driver_impl[dc743aefd116e4d1]::run_compiler::{closure#1}::{closure#2}, core[5dceb995eb6c8c1c]::result::Result<core[5dceb995eb6c8c1c]::option::Option<rustc_interface[a065794b3504c0d8]::queries::Linker>, rustc_span[1c1785c13b4703b1]::ErrorGuaranteed>>
[INFO] [stderr]   28:     0x7fdb5585c691 - rustc_span[1c1785c13b4703b1]::set_source_map::<core[5dceb995eb6c8c1c]::result::Result<(), rustc_span[1c1785c13b4703b1]::ErrorGuaranteed>, rustc_interface[a065794b3504c0d8]::interface::run_compiler<core[5dceb995eb6c8c1c]::result::Result<(), rustc_span[1c1785c13b4703b1]::ErrorGuaranteed>, rustc_driver_impl[dc743aefd116e4d1]::run_compiler::{closure#1}>::{closure#0}::{closure#0}>
[INFO] [stderr]   29:     0x7fdb5585bc3f - std[c49fe71d1e153478]::sys_common::backtrace::__rust_begin_short_backtrace::<rustc_interface[a065794b3504c0d8]::util::run_in_thread_pool_with_globals<rustc_interface[a065794b3504c0d8]::interface::run_compiler<core[5dceb995eb6c8c1c]::result::Result<(), rustc_span[1c1785c13b4703b1]::ErrorGuaranteed>, rustc_driver_impl[dc743aefd116e4d1]::run_compiler::{closure#1}>::{closure#0}, core[5dceb995eb6c8c1c]::result::Result<(), rustc_span[1c1785c13b4703b1]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[5dceb995eb6c8c1c]::result::Result<(), rustc_span[1c1785c13b4703b1]::ErrorGuaranteed>>
[INFO] [stderr]   30:     0x7fdb55e6c4e1 - <<std[c49fe71d1e153478]::thread::Builder>::spawn_unchecked_<rustc_interface[a065794b3504c0d8]::util::run_in_thread_pool_with_globals<rustc_interface[a065794b3504c0d8]::interface::run_compiler<core[5dceb995eb6c8c1c]::result::Result<(), rustc_span[1c1785c13b4703b1]::ErrorGuaranteed>, rustc_driver_impl[dc743aefd116e4d1]::run_compiler::{closure#1}>::{closure#0}, core[5dceb995eb6c8c1c]::result::Result<(), rustc_span[1c1785c13b4703b1]::ErrorGuaranteed>>::{closure#0}::{closure#0}, core[5dceb995eb6c8c1c]::result::Result<(), rustc_span[1c1785c13b4703b1]::ErrorGuaranteed>>::{closure#1} as core[5dceb995eb6c8c1c]::ops::function::FnOnce<()>>::call_once::{shim:vtable#0}
[INFO] [stderr]   31:     0x7fdb532b93b5 - <alloc::boxed::Box<F,A> as core::ops::function::FnOnce<Args>>::call_once::h0d83cb2920a49046
[INFO] [stderr] error: could not compile `serde` (lib)
[INFO] running `Command { std: "docker" "inspect" "30a4d62d8e9268dafd293f068320d42b149b567d0a5fa51d82e703add67feac6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30a4d62d8e9268dafd293f068320d42b149b567d0a5fa51d82e703add67feac6", kill_on_drop: false }`
[INFO] [stdout] 30a4d62d8e9268dafd293f068320d42b149b567d0a5fa51d82e703add67feac6
