[INFO] fetching crate quicknav 1.5.0...
[INFO] checking quicknav-1.5.0 against try#4c35efa5bf9c956a3bd39021cc9699d125584977 for pr-104746
[INFO] extracting crate quicknav 1.5.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate quicknav 1.5.0 on toolchain 4c35efa5bf9c956a3bd39021cc9699d125584977
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4c35efa5bf9c956a3bd39021cc9699d125584977" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate quicknav 1.5.0
[INFO] finished tweaking crates.io crate quicknav 1.5.0
[INFO] tweaked toml for crates.io crate quicknav 1.5.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate crates.io crate quicknav 1.5.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+4c35efa5bf9c956a3bd39021cc9699d125584977" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+4c35efa5bf9c956a3bd39021cc9699d125584977" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 75d487f955427997d05263ebbab5d14de8386a3f456c4fbcf220ecd47c25e9de
[INFO] running `Command { std: "docker" "start" "-a" "75d487f955427997d05263ebbab5d14de8386a3f456c4fbcf220ecd47c25e9de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "75d487f955427997d05263ebbab5d14de8386a3f456c4fbcf220ecd47c25e9de", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "75d487f955427997d05263ebbab5d14de8386a3f456c4fbcf220ecd47c25e9de", kill_on_drop: false }`
[INFO] [stdout] 75d487f955427997d05263ebbab5d14de8386a3f456c4fbcf220ecd47c25e9de
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:bb5b0feb4f87116a4ea905b7ff5bf5b85913db05e9f0fbc1abdd3168928d9075" "/opt/rustwide/cargo-home/bin/cargo" "+4c35efa5bf9c956a3bd39021cc9699d125584977" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d83508386258ff0e299e8e01a93a852f72cc8752fa8d85ff2d94db1ced0ad7c5
[INFO] running `Command { std: "docker" "start" "-a" "d83508386258ff0e299e8e01a93a852f72cc8752fa8d85ff2d94db1ced0ad7c5", kill_on_drop: false }`
[INFO] [stderr] Compiling libc v0.2.81
[INFO] [stderr] Compiling proc-macro2 v1.0.24
[INFO] [stderr] Compiling version_check v0.9.2
[INFO] [stderr] Compiling unicode-xid v0.2.1
[INFO] [stderr] Compiling memchr v2.4.0
[INFO] [stderr] Compiling getrandom v0.2.2
[INFO] [stderr] Compiling serde v1.0.118
[INFO] [stderr] Checking cfg-if v1.0.0
[INFO] [stderr] Compiling syn v1.0.58
[INFO] [stderr] Compiling ryu v1.0.5
[INFO] [stderr] Checking byteorder v1.4.2
[INFO] [stderr] Checking lazy_static v1.4.0
[INFO] [stderr] Compiling bitflags v1.2.1
[INFO] [stderr] Checking ppv-lite86 v0.2.10
[INFO] [stderr] Checking unicode-width v0.1.8
[INFO] [stderr] Checking itoa v0.4.7
[INFO] [stderr] Compiling unicode-segmentation v1.7.1
[INFO] [stderr] Compiling anyhow v1.0.37
[INFO] [stderr] Checking textwrap v0.11.0
[INFO] [stderr] Checking ansi_term v0.11.0
[INFO] [stderr] Compiling serde_json v1.0.61
[INFO] [stderr] Checking strsim v0.8.0
[INFO] [stderr] Checking remove_dir_all v0.5.3
[INFO] [stderr] Compiling serde_derive v1.0.118
[INFO] [stderr] Checking vec_map v0.8.2
[INFO] [stderr] Checking regex-automata v0.1.9
[INFO] [stderr] Checking regex-syntax v0.6.25
[INFO] [stderr] Compiling heck v0.3.2
[INFO] [stderr] Checking encode_unicode v0.3.6
[INFO] [stderr] error: failed to run custom build command for `libc v0.2.81`
[INFO] [stderr]
[INFO] [stderr] Caused by:
[INFO] [stderr] process didn't exit successfully: `/opt/rustwide/target/debug/build/libc-97a90c297dae8dd8/build-script-build` (exit status: 101)
[INFO] [stderr] --- stderr
[INFO] [stderr] thread 'main' panicked at 'Failed to get rustc version', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.81/build.rs:7:31
[INFO] [stderr] stack backtrace:
[INFO] [stderr] 0: 0x561dac6a0670 - std::backtrace_rs::backtrace::libunwind::trace::h811febcfb6bf351b
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stderr] 1: 0x561dac6a0670 - std::backtrace_rs::backtrace::trace_unsynchronized::h96b741a907b99af4
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr] 2: 0x561dac6a0670 - std::sys_common::backtrace::_print_fmt::ha31a53ff87fd209a
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/sys_common/backtrace.rs:65:5
[INFO] [stderr] 3: 0x561dac6a0670 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hf3e583c2438f2a49
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr] 4: 0x561dac6bd6ee - core::fmt::write::h5bbd9ad31ca9656a
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/core/src/fmt/mod.rs:1208:17
[INFO] [stderr] 5: 0x561dac69dc25 - std::io::Write::write_fmt::hd89bca684a701c73
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/io/mod.rs:1682:15
[INFO] [stderr] 6: 0x561dac6a0435 - std::sys_common::backtrace::_print::h54dbe9f97737135f
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr] 7: 0x561dac6a0435 - std::sys_common::backtrace::print::h0e49378300df2b98
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr] 8: 0x561dac6a1a7f - std::panicking::default_hook::{{closure}}::h3f37edd052a3115b
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panicking.rs:267:22
[INFO] [stderr] 9: 0x561dac6a17ba - std::panicking::default_hook::h5d6c18972d08cdf9
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panicking.rs:286:9
[INFO] [stderr] 10: 0x561dac6a217c - std::panicking::rust_panic_with_hook::hc1a5d3b45d0a6122
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panicking.rs:688:13
[INFO] [stderr] 11: 0x561dac6a1f17 - std::panicking::begin_panic_handler::{{closure}}::h874739c08844ff19
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panicking.rs:579:13
[INFO] [stderr] 12: 0x561dac6a0b1c - std::sys_common::backtrace::__rust_end_short_backtrace::hf48f04738ab9a35b
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/sys_common/backtrace.rs:137:18
[INFO] [stderr] 13: 0x561dac6a1c32 - rust_begin_unwind
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panicking.rs:575:5
[INFO] [stderr] 14: 0x561dac67a1c3 - core::panicking::panic_fmt::hf1cb23ab679c1d98
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/core/src/panicking.rs:65:14
[INFO] [stderr] 15: 0x561dac6bc991 - core::panicking::panic_display::h11909d294f7a92c9
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/core/src/panicking.rs:138:5
[INFO] [stderr] 16: 0x561dac6bc93b - core::panicking::panic_str::h4837f1de44eef628
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/core/src/panicking.rs:122:5
[INFO] [stderr] 17: 0x561dac67a186 - core::option::expect_failed::h7b3a0cf2e88792c5
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/core/src/option.rs:1879:5
[INFO] [stderr] 18: 0x561dac683794 - core::option::Option<T>::expect::h000c77b2a7cfdd62
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/core/src/option.rs:741:21
[INFO] [stderr] 19: 0x561dac680499 - build_script_build::main::hef2bf2a667ae8811
[INFO] [stderr] at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.81/build.rs:7:9
[INFO] [stderr] 20: 0x561dac6823ab - core::ops::function::FnOnce::call_once::ha94a48500d9187d9
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/core/src/ops/function.rs:507:5
[INFO] [stderr] 21: 0x561dac68309e - std::sys_common::backtrace::__rust_begin_short_backtrace::hb5d7742013307a1c
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/sys_common/backtrace.rs:121:18
[INFO] [stderr] 22: 0x561dac67c581 - std::rt::lang_start::{{closure}}::h5aac4f85f9846364
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/rt.rs:166:18
[INFO] [stderr] 23: 0x561dac69afcc - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h5b494a5e5c20b261
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/core/src/ops/function.rs:606:13
[INFO] [stderr] 24: 0x561dac69afcc - std::panicking::try::do_call::h5d51cf8602c16f4a
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panicking.rs:483:40
[INFO] [stderr] 25: 0x561dac69afcc - std::panicking::try::h7fb476dcd351379f
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panicking.rs:447:19
[INFO] [stderr] 26: 0x561dac69afcc - std::panic::catch_unwind::h77a54dd491b33982
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panic.rs:137:14
[INFO] [stderr] 27: 0x561dac69afcc - std::rt::lang_start_internal::{{closure}}::ha93bba2cc6dbac5f
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/rt.rs:148:48
[INFO] [stderr] 28: 0x561dac69afcc - std::panicking::try::do_call::h13be1d7306b0159a
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panicking.rs:483:40
[INFO] [stderr] 29: 0x561dac69afcc - std::panicking::try::heffa9c927f17c3e6
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panicking.rs:447:19
[INFO] [stderr] 30: 0x561dac69afcc - std::panic::catch_unwind::h1126625f5de4482e
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/panic.rs:137:14
[INFO] [stderr] 31: 0x561dac69afcc - std::rt::lang_start_internal::h02f6c396aa452b3b
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/rt.rs:148:20
[INFO] [stderr] 32: 0x561dac67c55a - std::rt::lang_start::h94bd5196a4967e91
[INFO] [stderr] at /rustc/4c35efa5bf9c956a3bd39021cc9699d125584977/library/std/src/rt.rs:165:17
[INFO] [stderr] 33: 0x561dac68197e - main
[INFO] [stderr] 34: 0x7f999157f083 - __libc_start_main
[INFO] [stderr] 35: 0x561dac67a50e - _start
[INFO] [stderr] 36: 0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d83508386258ff0e299e8e01a93a852f72cc8752fa8d85ff2d94db1ced0ad7c5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d83508386258ff0e299e8e01a93a852f72cc8752fa8d85ff2d94db1ced0ad7c5", kill_on_drop: false }`
[INFO] [stdout] d83508386258ff0e299e8e01a93a852f72cc8752fa8d85ff2d94db1ced0ad7c5