[INFO] cloning repository https://github.com/mnottale/language
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mnottale/language" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmnottale%2Flanguage", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmnottale%2Flanguage'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 37e10bd07ba2c5778da8f619a6a5c5611910d5cc
[INFO] checking mnottale/language against master#506512391b1a75ae450d36c9420978402a91abcc for pr-125384
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmnottale%2Flanguage" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mnottale/language on toolchain 506512391b1a75ae450d36c9420978402a91abcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mnottale/language
[INFO] finished tweaking git repo https://github.com/mnottale/language
[INFO] tweaked toml for git repo https://github.com/mnottale/language written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/mnottale/language 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" "+506512391b1a75ae450d36c9420978402a91abcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded cpython v0.1.0
[INFO] [stderr]   Downloaded python3-sys v0.1.3
[INFO] [stderr]   Downloaded num-traits v0.1.42
[INFO] [stderr]   Downloaded libc v0.2.36
[INFO] [stderr]   Downloaded pest v1.0.0-beta.17
[INFO] [stderr]   Downloaded pest_derive v1.0.0-beta.17
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 61b6d5405579c299852c7192125ee1d90a38680ad5d5e8602b2f8c3b23df4abb
[INFO] running `Command { std: "docker" "start" "-a" "61b6d5405579c299852c7192125ee1d90a38680ad5d5e8602b2f8c3b23df4abb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "61b6d5405579c299852c7192125ee1d90a38680ad5d5e8602b2f8c3b23df4abb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "61b6d5405579c299852c7192125ee1d90a38680ad5d5e8602b2f8c3b23df4abb", kill_on_drop: false }`
[INFO] [stdout] 61b6d5405579c299852c7192125ee1d90a38680ad5d5e8602b2f8c3b23df4abb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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=allow" "-e" "RUSTDOCFLAGS=--cap-lints=allow" "-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:beeedbb442662e57d416641ecc3200b38e573c25b057896194468d05594dd835" "/opt/rustwide/cargo-home/bin/cargo" "+506512391b1a75ae450d36c9420978402a91abcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4f17510a6582b2e0e09da3e4abdb174a0ae438a102ac636a099e2f7507dd3b22
[INFO] running `Command { std: "docker" "start" "-a" "4f17510a6582b2e0e09da3e4abdb174a0ae438a102ac636a099e2f7507dd3b22", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.36
[INFO] [stderr]    Compiling kernel32-sys v0.2.2
[INFO] [stderr]    Compiling cpython v0.1.0
[INFO] [stderr]    Compiling pest v1.0.0-beta.17
[INFO] [stderr]     Checking num-traits v0.1.42
[INFO] [stderr]     Checking maplit v1.0.1
[INFO] [stderr]    Compiling syn v0.10.8
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling pest_derive v1.0.0-beta.17
[INFO] [stderr]    Compiling python3-sys v0.1.3
[INFO] [stderr] error: failed to run custom build command for `python3-sys v0.1.3`
[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/python3-sys-21c4a72979174696/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/python3-sys-0.1.3/build.rs:366:65:
[INFO] [stderr]   called `Result::unwrap()` on an `Err` value: "failed to run python interpreter `\"python\" \"-c\" \"import sys; import sysconfig; print(sys.version_info[0:2]); print(sysconfig.get_config_var(\\'LIBDIR\\')); print(sysconfig.get_config_var(\\'Py_ENABLE_SHARED\\')); print(sysconfig.get_config_var(\\'LDVERSION\\')); print(sys.exec_prefix);\"`: No such file or directory (os error 2)"
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x558af93f0495 - std::backtrace_rs::backtrace::libunwind::trace::h876d7c806a499a4c
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/../../backtrace/src/backtrace/libunwind.rs:105:5
[INFO] [stderr]      1:     0x558af93f0495 - std::backtrace_rs::backtrace::trace_unsynchronized::h93aa6ac20204363f
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x558af93f0495 - std::sys_common::backtrace::_print_fmt::haa4d06348037420c
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/sys_common/backtrace.rs:68:5
[INFO] [stderr]      3:     0x558af93f0495 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hb19a1068483db389
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x558af941386b - core::fmt::rt::Argument::fmt::he1186800a1f8dba1
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/core/src/fmt/rt.rs:165:63
[INFO] [stderr]      5:     0x558af941386b - core::fmt::write::h93b97d526ac83ab7
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/core/src/fmt/mod.rs:1169:21
[INFO] [stderr]      6:     0x558af93edf6f - std::io::Write::write_fmt::h5b8b8a434bcca5dd
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/io/mod.rs:1835:15
[INFO] [stderr]      7:     0x558af93f026e - std::sys_common::backtrace::_print::h68eb04d9824256f0
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      8:     0x558af93f026e - std::sys_common::backtrace::print::h9c98f0d9c4306586
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      9:     0x558af93f1659 - std::panicking::default_hook::{{closure}}::hcf6830dc400daae4
[INFO] [stderr]     10:     0x558af93f139d - std::panicking::default_hook::h483615856e3a5cc0
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:298:9
[INFO] [stderr]     11:     0x558af93f1b63 - std::panicking::rust_panic_with_hook::h36ebc998f351e5fd
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:795:13
[INFO] [stderr]     12:     0x558af93f1a44 - std::panicking::begin_panic_handler::{{closure}}::h686207a93492b797
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:664:13
[INFO] [stderr]     13:     0x558af93f0959 - std::sys_common::backtrace::__rust_end_short_backtrace::h2e37e6bf5aac538a
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/sys_common/backtrace.rs:171:18
[INFO] [stderr]     14:     0x558af93f1777 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:652:5
[INFO] [stderr]     15:     0x558af94124d3 - core::panicking::panic_fmt::heae5d8e5e3703b89
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/core/src/panicking.rs:72:14
[INFO] [stderr]     16:     0x558af9412a56 - core::result::unwrap_failed::hd5eec0649c67d3d0
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/core/src/result.rs:1658:5
[INFO] [stderr]     17:     0x558af93255ae - build_script_build::main::ha858c5b3e4fff8f6
[INFO] [stderr]     18:     0x558af93276a3 - core::ops::function::FnOnce::call_once::h35446f942201f278
[INFO] [stderr]     19:     0x558af9326e06 - std::sys_common::backtrace::__rust_begin_short_backtrace::hd7d28fadd6fcf05a
[INFO] [stderr]     20:     0x558af931fa09 - std::rt::lang_start::{{closure}}::h5ff1043e1c87c255
[INFO] [stderr]     21:     0x558af93eabad - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h75d0a4fe40296b94
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/core/src/ops/function.rs:284:13
[INFO] [stderr]     22:     0x558af93eabad - std::panicking::try::do_call::ha27ca65264b021a4
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:559:40
[INFO] [stderr]     23:     0x558af93eabad - std::panicking::try::h901e100a17b3cd54
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:523:19
[INFO] [stderr]     24:     0x558af93eabad - std::panic::catch_unwind::h13d256f1691dfb07
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panic.rs:149:14
[INFO] [stderr]     25:     0x558af93eabad - std::rt::lang_start_internal::{{closure}}::hdf5a5a26190e1fd8
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/rt.rs:141:48
[INFO] [stderr]     26:     0x558af93eabad - std::panicking::try::do_call::h3a8fb98242ec30e5
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:559:40
[INFO] [stderr]     27:     0x558af93eabad - std::panicking::try::h881801cd3cb8ba77
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panicking.rs:523:19
[INFO] [stderr]     28:     0x558af93eabad - std::panic::catch_unwind::he14d380083644433
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/panic.rs:149:14
[INFO] [stderr]     29:     0x558af93eabad - std::rt::lang_start_internal::hf560e7575b65e65f
[INFO] [stderr]                                  at /rustc/506512391b1a75ae450d36c9420978402a91abcc/library/std/src/rt.rs:141:20
[INFO] [stderr]     30:     0x558af931f9e7 - std::rt::lang_start::h8e81e022082e61c2
[INFO] [stderr]     31:     0x558af9326355 - main
[INFO] [stderr]     32:     0x7fdb6ea82d90 - <unknown>
[INFO] [stderr]     33:     0x7fdb6ea82e40 - __libc_start_main
[INFO] [stderr]     34:     0x558af931a9f5 - _start
[INFO] [stderr]     35:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "4f17510a6582b2e0e09da3e4abdb174a0ae438a102ac636a099e2f7507dd3b22", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f17510a6582b2e0e09da3e4abdb174a0ae438a102ac636a099e2f7507dd3b22", kill_on_drop: false }`
[INFO] [stdout] 4f17510a6582b2e0e09da3e4abdb174a0ae438a102ac636a099e2f7507dd3b22