[INFO] cloning repository https://github.com/arminha/covet
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/arminha/covet" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farminha%2Fcovet", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farminha%2Fcovet'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 929f8e0e9f7fd50595fda66345486a90aa13a03b
[INFO] checking arminha/covet against try#8ea250bdb76176ecb0225baa34aa634b024ae0e2 for pr-101692
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farminha%2Fcovet" "/workspace/builds/worker-5/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-5/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/arminha/covet on toolchain 8ea250bdb76176ecb0225baa34aa634b024ae0e2
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ea250bdb76176ecb0225baa34aa634b024ae0e2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/arminha/covet
[INFO] finished tweaking git repo https://github.com/arminha/covet
[INFO] tweaked toml for git repo https://github.com/arminha/covet written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] crate git repo https://github.com/arminha/covet already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8ea250bdb76176ecb0225baa34aa634b024ae0e2" "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-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+8ea250bdb76176ecb0225baa34aa634b024ae0e2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0b46d2a543748fdf74defe9de8d7c435fd752a5cab3181b3f62dc5dfc89396e6
[INFO] running `Command { std: "docker" "start" "-a" "0b46d2a543748fdf74defe9de8d7c435fd752a5cab3181b3f62dc5dfc89396e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0b46d2a543748fdf74defe9de8d7c435fd752a5cab3181b3f62dc5dfc89396e6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b46d2a543748fdf74defe9de8d7c435fd752a5cab3181b3f62dc5dfc89396e6", kill_on_drop: false }`
[INFO] [stdout] 0b46d2a543748fdf74defe9de8d7c435fd752a5cab3181b3f62dc5dfc89396e6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5/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@sha256:824c28ce115f6b999260af6986f3384c158e782489540e41c0b698ca1d9fd927" "/opt/rustwide/cargo-home/bin/cargo" "+8ea250bdb76176ecb0225baa34aa634b024ae0e2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f4cb1c0320ca16bec748a5b4ab67cc3975edeac41cde95aa5c36f767840be8fd
[INFO] running `Command { std: "docker" "start" "-a" "f4cb1c0320ca16bec748a5b4ab67cc3975edeac41cde95aa5c36f767840be8fd", kill_on_drop: false }`
[INFO] [stderr]    Compiling version_check v0.9.4
[INFO] [stderr]    Compiling libc v0.2.112
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling syn v1.0.84
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]    Compiling typenum v1.15.0
[INFO] [stderr]    Compiling futures-core v0.3.19
[INFO] [stderr]    Compiling pkg-config v0.3.24
[INFO] [stderr]    Compiling cc v1.0.72
[INFO] [stderr]     Checking itoa v1.0.1
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]     Checking bitflags v1.3.2
[INFO] [stderr]    Compiling futures-task v0.3.19
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]     Checking futures-sink v0.3.19
[INFO] [stderr]    Compiling futures-util v0.3.19
[INFO] [stderr]     Checking foreign-types-shared v0.1.1
[INFO] [stderr]    Compiling serde v1.0.132
[INFO] [stderr]    Compiling futures-channel v0.3.19
[INFO] [stderr]    Compiling unicode-segmentation v1.8.0
[INFO] [stderr]     Checking hashbrown v0.11.2
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]    Compiling httparse v1.5.1
[INFO] [stderr]     Checking itoa v0.4.8
[INFO] [stderr]     Checking matches v0.1.9
[INFO] [stderr]    Compiling openssl v0.10.38
[INFO] [stderr]     Checking slab v0.4.5
[INFO] [stderr]     Checking try-lock v0.2.3
[INFO] [stderr]    Compiling unicode-width v0.1.9
[INFO] [stderr]     Checking tinyvec_macros v0.1.0
[INFO] [stderr]     Checking httpdate v1.0.2
[INFO] [stderr]    Compiling native-tls v0.2.8
[INFO] [stderr]     Checking once_cell v1.9.0
[INFO] [stderr]     Checking percent-encoding v2.1.0
[INFO] [stderr]     Checking cpufeatures v0.2.1
[INFO] [stderr]     Checking ryu v1.0.9
[INFO] [stderr]    Compiling ansi_term v0.12.1
[INFO] [stderr]     Checking tower-service v0.3.1
[INFO] [stderr]     Checking openssl-probe v0.1.4
[INFO] [stderr]     Checking mime v0.3.16
[INFO] [stderr]    Compiling strsim v0.8.0
[INFO] [stderr]    Compiling vec_map v0.8.2
[INFO] [stderr]    Compiling serde_json v1.0.73
[INFO] [stderr]    Compiling encoding_rs v0.8.30
[INFO] [stderr]     Checking base64 v0.13.0
[INFO] [stderr]     Checking unicode-bidi v0.3.7
[INFO] [stderr]     Checking opaque-debug v0.3.0
[INFO] [stderr]    Compiling anyhow v1.0.52
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]    Compiling time-macros v0.2.3
[INFO] [stderr]     Checking ipnet v2.3.1
[INFO] [stderr]     Checking xml-rs v0.8.4
[INFO] [stderr]     Checking scoped-tls v1.0.0
[INFO] [stderr]     Checking termcolor v1.1.2
[INFO] [stderr]    Compiling generic-array v0.14.4
[INFO] [stderr]    Compiling proc-macro-error-attr v1.0.4
[INFO] [stderr]    Compiling unicase v2.6.0
[INFO] [stderr]    Compiling proc-macro-error v1.0.4
[INFO] [stderr]    Compiling indexmap v1.7.0
[INFO] [stderr] error: failed to run custom build command for `libc v0.2.112`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/libc-417c9c69427fd508/build-script-build` (exit status: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rerun-if-changed=build.rs
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'Failed to get rustc version', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.112/build.rs:9:63
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x5605f2f56620 - std::backtrace_rs::backtrace::libunwind::trace::h07f6f3f62143c2f1
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      1:     0x5605f2f56620 - std::backtrace_rs::backtrace::trace_unsynchronized::ha4af296646eff8ca
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x5605f2f56620 - std::sys_common::backtrace::_print_fmt::h6c078bd86d05ddda
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/sys_common/backtrace.rs:66:5
[INFO] [stderr]      3:     0x5605f2f56620 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hee15a79371583970
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/sys_common/backtrace.rs:45:22
[INFO] [stderr]      4:     0x5605f2f739be - core::fmt::write::hf2e27bdaba79f677
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/core/src/fmt/mod.rs:1202:17
[INFO] [stderr]      5:     0x5605f2f539a5 - std::io::Write::write_fmt::ha1817aee185c081a
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/io/mod.rs:1679:15
[INFO] [stderr]      6:     0x5605f2f57ca3 - std::sys_common::backtrace::_print::hf9a456aef6ad95d2
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/sys_common/backtrace.rs:48:5
[INFO] [stderr]      7:     0x5605f2f57ca3 - std::sys_common::backtrace::print::h2da0b4b6a2c7b2ed
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/sys_common/backtrace.rs:35:9
[INFO] [stderr]      8:     0x5605f2f57ca3 - std::panicking::default_hook::{{closure}}::he4468ced72b6d9a8
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/panicking.rs:295:22
[INFO] [stderr]      9:     0x5605f2f5798f - std::panicking::default_hook::h1bb5aeb06711134e
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/panicking.rs:314:9
[INFO] [stderr]     10:     0x5605f2f5834a - std::panicking::rust_panic_with_hook::haa10863c66cdd6aa
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/panicking.rs:698:17
[INFO] [stderr]     11:     0x5605f2f58247 - std::panicking::begin_panic_handler::{{closure}}::h4b82d065222c5bc4
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/panicking.rs:588:13
[INFO] [stderr]     12:     0x5605f2f56acc - std::sys_common::backtrace::__rust_end_short_backtrace::hac689cdb68db7f01
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/sys_common/backtrace.rs:138:18
[INFO] [stderr]     13:     0x5605f2f57f62 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/panicking.rs:584:5
[INFO] [stderr]     14:     0x5605f2f2fa93 - core::panicking::panic_fmt::hbc8818ca15fe0c9e
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/core/src/panicking.rs:142:14
[INFO] [stderr]     15:     0x5605f2f72c61 - core::panicking::panic_display::hc0b8dcf31558688c
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/core/src/panicking.rs:72:5
[INFO] [stderr]     16:     0x5605f2f72c0b - core::panicking::panic_str::h0dadaa21d68a2aa6
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/core/src/panicking.rs:56:5
[INFO] [stderr]     17:     0x5605f2f2f906 - core::option::expect_failed::h9e66908e6cc17b58
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/core/src/option.rs:1880:5
[INFO] [stderr]     18:     0x5605f2f31a22 - core::option::Option<T>::expect::h40ab9771abac0461
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/core/src/option.rs:738:21
[INFO] [stderr]     19:     0x5605f2f35cf4 - build_script_build::main::he451c3fb9502710f
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.112/build.rs:9:41
[INFO] [stderr]     20:     0x5605f2f398db - core::ops::function::FnOnce::call_once::hf0b9a53bf9acb1b5
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/core/src/ops/function.rs:248:5
[INFO] [stderr]     21:     0x5605f2f3980e - std::sys_common::backtrace::__rust_begin_short_backtrace::h2dfebf131c9c8a7d
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/sys_common/backtrace.rs:122:18
[INFO] [stderr]     22:     0x5605f2f32fa1 - std::rt::lang_start::{{closure}}::h2b6687a779c3c9fb
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/rt.rs:166:18
[INFO] [stderr]     23:     0x5605f2f50fdf - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hc214aeaf2bdd199e
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/core/src/ops/function.rs:280:13
[INFO] [stderr]     24:     0x5605f2f50fdf - std::panicking::try::do_call::hcff8a9964c5a8ed9
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/panicking.rs:492:40
[INFO] [stderr]     25:     0x5605f2f50fdf - std::panicking::try::h43dbacefe2436fcd
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/panicking.rs:456:19
[INFO] [stderr]     26:     0x5605f2f50fdf - std::panic::catch_unwind::h44cc723b3d02a7c5
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/panic.rs:137:14
[INFO] [stderr]     27:     0x5605f2f50fdf - std::rt::lang_start_internal::{{closure}}::h248747dd5aea9860
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/rt.rs:148:48
[INFO] [stderr]     28:     0x5605f2f50fdf - std::panicking::try::do_call::h4646f69ac0b58d7d
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/panicking.rs:492:40
[INFO] [stderr]     29:     0x5605f2f50fdf - std::panicking::try::h029dda102f1c6d71
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/panicking.rs:456:19
[INFO] [stderr]     30:     0x5605f2f50fdf - std::panic::catch_unwind::h0def18963bdd482a
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/panic.rs:137:14
[INFO] [stderr]     31:     0x5605f2f50fdf - std::rt::lang_start_internal::h7bcbe5e0d7f0056f
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/rt.rs:148:20
[INFO] [stderr]     32:     0x5605f2f32f7a - std::rt::lang_start::h36c7982ad0db00d0
[INFO] [stderr]                                  at /rustc/8ea250bdb76176ecb0225baa34aa634b024ae0e2/library/std/src/rt.rs:165:17
[INFO] [stderr]     33:     0x5605f2f37391 - main
[INFO] [stderr]     34:     0x7f9ff8f53083 - __libc_start_main
[INFO] [stderr]     35:     0x5605f2f2fc6e - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "f4cb1c0320ca16bec748a5b4ab67cc3975edeac41cde95aa5c36f767840be8fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f4cb1c0320ca16bec748a5b4ab67cc3975edeac41cde95aa5c36f767840be8fd", kill_on_drop: false }`
[INFO] [stdout] f4cb1c0320ca16bec748a5b4ab67cc3975edeac41cde95aa5c36f767840be8fd