[INFO] cloning repository https://github.com/archer884/syncpath
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/archer884/syncpath" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farcher884%2Fsyncpath", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farcher884%2Fsyncpath'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 132d9b78ff204364626655174afdf87ec58f8d24
[INFO] checking archer884/syncpath against try#0004f98fdd309b1940390200ae28913f7fbd736f for pr-101478
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Farcher884%2Fsyncpath" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/archer884/syncpath on toolchain 0004f98fdd309b1940390200ae28913f7fbd736f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0004f98fdd309b1940390200ae28913f7fbd736f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/archer884/syncpath
[INFO] finished tweaking git repo https://github.com/archer884/syncpath
[INFO] tweaked toml for git repo https://github.com/archer884/syncpath written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/archer884/syncpath already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+0004f98fdd309b1940390200ae28913f7fbd736f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+0004f98fdd309b1940390200ae28913f7fbd736f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] baee6d539736e21cdc44073f2352fb0d408064802ed3d2bcdb68c290fdc653bd
[INFO] running `Command { std: "docker" "start" "-a" "baee6d539736e21cdc44073f2352fb0d408064802ed3d2bcdb68c290fdc653bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "baee6d539736e21cdc44073f2352fb0d408064802ed3d2bcdb68c290fdc653bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "baee6d539736e21cdc44073f2352fb0d408064802ed3d2bcdb68c290fdc653bd", kill_on_drop: false }`
[INFO] [stdout] baee6d539736e21cdc44073f2352fb0d408064802ed3d2bcdb68c290fdc653bd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+0004f98fdd309b1940390200ae28913f7fbd736f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b87e3c944493d9b9806236c2a0f72d3e96b7309500b14894a8c62444723bff6
[INFO] running `Command { std: "docker" "start" "-a" "6b87e3c944493d9b9806236c2a0f72d3e96b7309500b14894a8c62444723bff6", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.24
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling libc v0.2.44
[INFO] [stderr]    Compiling unicode-segmentation v1.2.1
[INFO] [stderr]     Checking unicode-width v0.1.5
[INFO] [stderr]     Checking strsim v0.7.0
[INFO] [stderr]     Checking vec_map v0.8.1
[INFO] [stderr]     Checking bitflags v1.0.4
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]     Checking same-file v1.0.4
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking walkdir v2.2.7
[INFO] [stderr]    Compiling heck v0.3.0
[INFO] [stderr] error: failed to run custom build command for `libc v0.2.44`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/libc-13dada79794fd031/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-0.2.44/build.rs:10:30
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55ec9f484c70 - std::backtrace_rs::backtrace::libunwind::trace::h68f4821065dfec0e
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      1:     0x55ec9f484c70 - std::backtrace_rs::backtrace::trace_unsynchronized::ha303f16c3a318cd7
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55ec9f484c70 - std::sys_common::backtrace::_print_fmt::h8dfadbff5821254c
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/sys_common/backtrace.rs:66:5
[INFO] [stderr]      3:     0x55ec9f484c70 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::heefb934e22801888
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/sys_common/backtrace.rs:45:22
[INFO] [stderr]      4:     0x55ec9f4a1d0e - core::fmt::write::h01342d4892384d76
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/core/src/fmt/mod.rs:1202:17
[INFO] [stderr]      5:     0x55ec9f481fa5 - std::io::Write::write_fmt::hb26080656bb88960
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/io/mod.rs:1679:15
[INFO] [stderr]      6:     0x55ec9f486363 - std::sys_common::backtrace::_print::hb4fd46f8e2d1a65e
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/sys_common/backtrace.rs:48:5
[INFO] [stderr]      7:     0x55ec9f486363 - std::sys_common::backtrace::print::h2a76f58572fab0a6
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/sys_common/backtrace.rs:35:9
[INFO] [stderr]      8:     0x55ec9f486363 - std::panicking::default_hook::{{closure}}::hb9a3f4df8037487b
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/panicking.rs:295:22
[INFO] [stderr]      9:     0x55ec9f48604f - std::panicking::default_hook::h979ac2eb56748e7e
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/panicking.rs:314:9
[INFO] [stderr]     10:     0x55ec9f486a0a - std::panicking::rust_panic_with_hook::h2b045de94a6bed6e
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/panicking.rs:698:17
[INFO] [stderr]     11:     0x55ec9f486907 - std::panicking::begin_panic_handler::{{closure}}::hd16628f187ef8977
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/panicking.rs:588:13
[INFO] [stderr]     12:     0x55ec9f48514c - std::sys_common::backtrace::__rust_end_short_backtrace::hbed5d913924b6f8d
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/sys_common/backtrace.rs:138:18
[INFO] [stderr]     13:     0x55ec9f486622 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/panicking.rs:584:5
[INFO] [stderr]     14:     0x55ec9f462a93 - core::panicking::panic_fmt::h2c4e0212f9f8bf54
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/core/src/panicking.rs:142:14
[INFO] [stderr]     15:     0x55ec9f4a0fb1 - core::panicking::panic_display::h9594fd5db3ac0e0f
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/core/src/panicking.rs:72:5
[INFO] [stderr]     16:     0x55ec9f4a0f5b - core::panicking::panic_str::h1761d3a9bd5d6d29
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/core/src/panicking.rs:56:5
[INFO] [stderr]     17:     0x55ec9f462906 - core::option::expect_failed::ha2fd85073979cbeb
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/core/src/option.rs:1880:5
[INFO] [stderr]     18:     0x55ec9f46614a - core::option::Option<T>::expect::h8375db5e5817e496
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/core/src/option.rs:738:21
[INFO] [stderr]     19:     0x55ec9f46a511 - build_script_build::main::h28d4b9c9812954cb
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.44/build.rs:10:8
[INFO] [stderr]     20:     0x55ec9f46657b - core::ops::function::FnOnce::call_once::ha822e01998f05419
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/core/src/ops/function.rs:248:5
[INFO] [stderr]     21:     0x55ec9f465b4e - std::sys_common::backtrace::__rust_begin_short_backtrace::h094542796dff3bc1
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/sys_common/backtrace.rs:122:18
[INFO] [stderr]     22:     0x55ec9f469f11 - std::rt::lang_start::{{closure}}::h6ac450f467732fa3
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/rt.rs:166:18
[INFO] [stderr]     23:     0x55ec9f47f65f - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h6c98c92d9c546c1a
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/core/src/ops/function.rs:280:13
[INFO] [stderr]     24:     0x55ec9f47f65f - std::panicking::try::do_call::h76afc2029c2e1d32
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/panicking.rs:492:40
[INFO] [stderr]     25:     0x55ec9f47f65f - std::panicking::try::h74dc6b18046089e3
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/panicking.rs:456:19
[INFO] [stderr]     26:     0x55ec9f47f65f - std::panic::catch_unwind::h6a1254ff8094a160
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/panic.rs:137:14
[INFO] [stderr]     27:     0x55ec9f47f65f - std::rt::lang_start_internal::{{closure}}::h5219e028e3b4e1e8
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/rt.rs:148:48
[INFO] [stderr]     28:     0x55ec9f47f65f - std::panicking::try::do_call::he19154737ff80739
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/panicking.rs:492:40
[INFO] [stderr]     29:     0x55ec9f47f65f - std::panicking::try::h3d6d936260435153
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/panicking.rs:456:19
[INFO] [stderr]     30:     0x55ec9f47f65f - std::panic::catch_unwind::hd4cb540b69d540e3
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/panic.rs:137:14
[INFO] [stderr]     31:     0x55ec9f47f65f - std::rt::lang_start_internal::h80f5e86d2adcc33d
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/rt.rs:148:20
[INFO] [stderr]     32:     0x55ec9f469eea - std::rt::lang_start::h70635b441c2c3e00
[INFO] [stderr]                                  at /rustc/0004f98fdd309b1940390200ae28913f7fbd736f/library/std/src/rt.rs:165:17
[INFO] [stderr]     33:     0x55ec9f46aa61 - main
[INFO] [stderr]     34:     0x7f4b085e1083 - __libc_start_main
[INFO] [stderr]     35:     0x55ec9f462c6e - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "6b87e3c944493d9b9806236c2a0f72d3e96b7309500b14894a8c62444723bff6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b87e3c944493d9b9806236c2a0f72d3e96b7309500b14894a8c62444723bff6", kill_on_drop: false }`
[INFO] [stdout] 6b87e3c944493d9b9806236c2a0f72d3e96b7309500b14894a8c62444723bff6