[INFO] fetching crate subscriber-rs 0.0.1...
[INFO] checking subscriber-rs-0.0.1 against try#e3fba958e26aa56a364ba6d36376f1800cd40fa5 for pr-101437
[INFO] extracting crate subscriber-rs 0.0.1 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate subscriber-rs 0.0.1 on toolchain e3fba958e26aa56a364ba6d36376f1800cd40fa5
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e3fba958e26aa56a364ba6d36376f1800cd40fa5" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate subscriber-rs 0.0.1
[INFO] finished tweaking crates.io crate subscriber-rs 0.0.1
[INFO] tweaked toml for crates.io crate subscriber-rs 0.0.1 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate crates.io crate subscriber-rs 0.0.1 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+e3fba958e26aa56a364ba6d36376f1800cd40fa5" "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" "+e3fba958e26aa56a364ba6d36376f1800cd40fa5" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 3ea72c6da5c2ab3075008f0f9d3fb5ab0f06663f7e09dc005a14f06f4fd44ea6
[INFO] running `Command { std: "docker" "start" "-a" "3ea72c6da5c2ab3075008f0f9d3fb5ab0f06663f7e09dc005a14f06f4fd44ea6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ea72c6da5c2ab3075008f0f9d3fb5ab0f06663f7e09dc005a14f06f4fd44ea6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ea72c6da5c2ab3075008f0f9d3fb5ab0f06663f7e09dc005a14f06f4fd44ea6", kill_on_drop: false }`
[INFO] [stdout] 3ea72c6da5c2ab3075008f0f9d3fb5ab0f06663f7e09dc005a14f06f4fd44ea6
[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" "+e3fba958e26aa56a364ba6d36376f1800cd40fa5" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 70ac3e5c61e5c8fde4096b90f4045102d6a0eacc7e8c3e832d08979060a3161b
[INFO] running `Command { std: "docker" "start" "-a" "70ac3e5c61e5c8fde4096b90f4045102d6a0eacc7e8c3e832d08979060a3161b", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.37
[INFO] [stderr]    Compiling libc v0.2.122
[INFO] [stderr]    Compiling unicode-xid v0.2.2
[INFO] [stderr]    Compiling syn v1.0.91
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]     Checking cfg-if v1.0.0
[INFO] [stderr]    Compiling autocfg v1.1.0
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling log v0.4.16
[INFO] [stderr]    Compiling parking_lot_core v0.9.2
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking pin-project-lite v0.2.8
[INFO] [stderr]     Checking futures-io v0.3.21
[INFO] [stderr]     Checking smallvec v1.8.0
[INFO] [stderr]     Checking slab v0.4.6
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]     Checking pin-utils v0.1.0
[INFO] [stderr]     Checking bytes v1.1.0
[INFO] [stderr]    Compiling anyhow v1.0.56
[INFO] [stderr]     Checking once_cell v1.10.0
[INFO] [stderr]    Compiling lock_api v0.4.7
[INFO] [stderr] error: failed to run custom build command for `libc v0.2.122`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/libc-030c876f2b4ac573/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-0.2.122/build.rs:9:63
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x557461434ad0 - std::backtrace_rs::backtrace::libunwind::trace::he919abe567a503fe
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      1:     0x557461434ad0 - std::backtrace_rs::backtrace::trace_unsynchronized::h325afec262efa225
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x557461434ad0 - std::sys_common::backtrace::_print_fmt::h8f305d2a6ebec9ee
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/sys_common/backtrace.rs:66:5
[INFO] [stderr]      3:     0x557461434ad0 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h24bec6e8311d652a
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/sys_common/backtrace.rs:45:22
[INFO] [stderr]      4:     0x557461451bae - core::fmt::write::h7929a9ff9196c2e2
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/core/src/fmt/mod.rs:1202:17
[INFO] [stderr]      5:     0x557461431e85 - std::io::Write::write_fmt::h9b9da188def8a312
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/io/mod.rs:1679:15
[INFO] [stderr]      6:     0x557461436203 - std::sys_common::backtrace::_print::h3bc758cac7b8e6d7
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/sys_common/backtrace.rs:48:5
[INFO] [stderr]      7:     0x557461436203 - std::sys_common::backtrace::print::h62af4addb18bf213
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/sys_common/backtrace.rs:35:9
[INFO] [stderr]      8:     0x557461436203 - std::panicking::default_hook::{{closure}}::h5d492b60bd5dacd2
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/panicking.rs:295:22
[INFO] [stderr]      9:     0x557461435eef - std::panicking::default_hook::hb00e907d8bf0dc7f
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/panicking.rs:314:9
[INFO] [stderr]     10:     0x5574614368aa - std::panicking::rust_panic_with_hook::h407e07dbb3bb8fed
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/panicking.rs:698:17
[INFO] [stderr]     11:     0x5574614367a7 - std::panicking::begin_panic_handler::{{closure}}::he2fee81d3f74de69
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/panicking.rs:588:13
[INFO] [stderr]     12:     0x557461434fec - std::sys_common::backtrace::__rust_end_short_backtrace::hebf9f4138a807e7c
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/sys_common/backtrace.rs:138:18
[INFO] [stderr]     13:     0x5574614364c2 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/panicking.rs:584:5
[INFO] [stderr]     14:     0x55746140fa23 - core::panicking::panic_fmt::hbc83be24f266f231
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/core/src/panicking.rs:142:14
[INFO] [stderr]     15:     0x557461450e51 - core::panicking::panic_display::h1b611a4e4745deaa
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/core/src/panicking.rs:72:5
[INFO] [stderr]     16:     0x557461450dfb - core::panicking::panic_str::hdc2dce124b0cc7b3
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/core/src/panicking.rs:56:5
[INFO] [stderr]     17:     0x55746140f896 - core::option::expect_failed::h2c8f63dc81bbcd34
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/core/src/option.rs:1880:5
[INFO] [stderr]     18:     0x557461411b02 - core::option::Option<T>::expect::h87aca56e0f152842
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/core/src/option.rs:738:21
[INFO] [stderr]     19:     0x5574614155d4 - build_script_build::main::h5a58d76e8c98fa25
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.122/build.rs:9:41
[INFO] [stderr]     20:     0x557461419aab - core::ops::function::FnOnce::call_once::hb9b5ca3309a493d5
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/core/src/ops/function.rs:248:5
[INFO] [stderr]     21:     0x5574614197de - std::sys_common::backtrace::__rust_begin_short_backtrace::h19d63188c4e17c0f
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/sys_common/backtrace.rs:122:18
[INFO] [stderr]     22:     0x557461412ab1 - std::rt::lang_start::{{closure}}::h373e1c930aa851a6
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/rt.rs:166:18
[INFO] [stderr]     23:     0x55746142f3ff - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hdd4bd3749468d39d
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/core/src/ops/function.rs:280:13
[INFO] [stderr]     24:     0x55746142f3ff - std::panicking::try::do_call::h5195fb2ddc1716ff
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/panicking.rs:492:40
[INFO] [stderr]     25:     0x55746142f3ff - std::panicking::try::hb88c04ffe6117e5b
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/panicking.rs:456:19
[INFO] [stderr]     26:     0x55746142f3ff - std::panic::catch_unwind::ha79a7dd587ef201d
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/panic.rs:137:14
[INFO] [stderr]     27:     0x55746142f3ff - std::rt::lang_start_internal::{{closure}}::h2d6e966af21bf214
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/rt.rs:148:48
[INFO] [stderr]     28:     0x55746142f3ff - std::panicking::try::do_call::h4cc4e35f2ff511bd
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/panicking.rs:492:40
[INFO] [stderr]     29:     0x55746142f3ff - std::panicking::try::hed9e6aed71cf80a7
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/panicking.rs:456:19
[INFO] [stderr]     30:     0x55746142f3ff - std::panic::catch_unwind::hb3861f8a72721186
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/panic.rs:137:14
[INFO] [stderr]     31:     0x55746142f3ff - std::rt::lang_start_internal::haba18db76e682a5b
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/rt.rs:148:20
[INFO] [stderr]     32:     0x557461412a8a - std::rt::lang_start::hfc744c47a1debcf5
[INFO] [stderr]                                  at /rustc/e3fba958e26aa56a364ba6d36376f1800cd40fa5/library/std/src/rt.rs:165:17
[INFO] [stderr]     33:     0x557461416d41 - main
[INFO] [stderr]     34:     0x7f4ebe4d8083 - __libc_start_main
[INFO] [stderr]     35:     0x55746140fbfe - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "70ac3e5c61e5c8fde4096b90f4045102d6a0eacc7e8c3e832d08979060a3161b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "70ac3e5c61e5c8fde4096b90f4045102d6a0eacc7e8c3e832d08979060a3161b", kill_on_drop: false }`
[INFO] [stdout] 70ac3e5c61e5c8fde4096b90f4045102d6a0eacc7e8c3e832d08979060a3161b