[INFO] fetching crate scd 0.1.3...
[INFO] checking scd-0.1.3 against try#66a90ebb65988141d56cac36290f07711b1b1e2d for pr-104616
[INFO] extracting crate scd 0.1.3 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate scd 0.1.3 on toolchain 66a90ebb65988141d56cac36290f07711b1b1e2d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66a90ebb65988141d56cac36290f07711b1b1e2d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate scd 0.1.3
[INFO] finished tweaking crates.io crate scd 0.1.3
[INFO] tweaked toml for crates.io crate scd 0.1.3 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate crates.io crate scd 0.1.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+66a90ebb65988141d56cac36290f07711b1b1e2d" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+66a90ebb65988141d56cac36290f07711b1b1e2d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 5fafc6677278a43ae85da507040ada83d61da19ca046b689d682234449d58cfe
[INFO] running `Command { std: "docker" "start" "-a" "5fafc6677278a43ae85da507040ada83d61da19ca046b689d682234449d58cfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5fafc6677278a43ae85da507040ada83d61da19ca046b689d682234449d58cfe", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fafc6677278a43ae85da507040ada83d61da19ca046b689d682234449d58cfe", kill_on_drop: false }`
[INFO] [stdout] 5fafc6677278a43ae85da507040ada83d61da19ca046b689d682234449d58cfe
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "+66a90ebb65988141d56cac36290f07711b1b1e2d" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d44b965831dfc6ff2e57e0bbc94d9053e9ff157763827112e71efdee6bbf6f79
[INFO] running `Command { std: "docker" "start" "-a" "d44b965831dfc6ff2e57e0bbc94d9053e9ff157763827112e71efdee6bbf6f79", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.69
[INFO] [stderr]     Checking cfg-if v0.1.10
[INFO] [stderr]    Compiling autocfg v1.0.0
[INFO] [stderr]    Compiling maybe-uninit v2.0.0
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling unicode-xid v0.2.0
[INFO] [stderr]     Checking lazy_static v1.4.0
[INFO] [stderr]    Compiling syn v1.0.18
[INFO] [stderr]    Compiling version_check v0.9.1
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling log v0.4.8
[INFO] [stderr]     Checking scopeguard v1.1.0
[INFO] [stderr]    Compiling getrandom v0.1.14
[INFO] [stderr]     Checking either v1.5.3
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]    Compiling rayon-core v1.7.0
[INFO] [stderr]     Checking unicode-width v0.1.7
[INFO] [stderr]     Checking owning_ref v0.3.3
[INFO] [stderr]    Compiling doc-comment v0.3.3
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling unicode-segmentation v1.6.0
[INFO] [stderr]     Checking textwrap v0.11.0
[INFO] [stderr]    Compiling anyhow v1.0.28
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking numtoa v0.1.0
[INFO] [stderr]     Checking linked-hash-map v0.5.2
[INFO] [stderr]     Checking ppv-lite86 v0.2.6
[INFO] [stderr]     Checking ansi_term v0.11.0
[INFO] [stderr]    Compiling sysinfo v0.14.1
[INFO] [stderr]     Checking strsim v0.8.0
[INFO] [stderr]    Compiling nix v0.17.0
[INFO] [stderr]     Checking smallvec v0.6.13
[INFO] [stderr] error: failed to run custom build command for `libc v0.2.69`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/libc-a2fc474ab5a78d8d/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-0.2.69/build.rs:7:31
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55fad58ed610 - std::backtrace_rs::backtrace::libunwind::trace::h6e19814b4a643d61
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/../../backtrace/src/backtrace/libunwind.rs:93:5
[INFO] [stderr]      1:     0x55fad58ed610 - std::backtrace_rs::backtrace::trace_unsynchronized::h68c1c52feb50cf1c
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x55fad58ed610 - std::sys_common::backtrace::_print_fmt::ha1f058fd0a732244
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/sys_common/backtrace.rs:65:5
[INFO] [stderr]      3:     0x55fad58ed610 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h28796d0ff6afe0f6
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/sys_common/backtrace.rs:44:22
[INFO] [stderr]      4:     0x55fad590a69e - core::fmt::write::hfee7452f6d0af6d0
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/core/src/fmt/mod.rs:1208:17
[INFO] [stderr]      5:     0x55fad58eabc5 - std::io::Write::write_fmt::h37a8cf2922b3a01b
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/io/mod.rs:1682:15
[INFO] [stderr]      6:     0x55fad58ed3d5 - std::sys_common::backtrace::_print::h596f2a1bebccc8dd
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/sys_common/backtrace.rs:47:5
[INFO] [stderr]      7:     0x55fad58ed3d5 - std::sys_common::backtrace::print::h53ae9baa224c59ab
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/sys_common/backtrace.rs:34:9
[INFO] [stderr]      8:     0x55fad58eea1f - std::panicking::default_hook::{{closure}}::h07238a9a90067e6a
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/panicking.rs:267:22
[INFO] [stderr]      9:     0x55fad58ee75a - std::panicking::default_hook::h4d541074f0e2c365
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/panicking.rs:286:9
[INFO] [stderr]     10:     0x55fad58ef11c - std::panicking::rust_panic_with_hook::he9a9da3e8fa18fc2
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/panicking.rs:688:13
[INFO] [stderr]     11:     0x55fad58eeeb7 - std::panicking::begin_panic_handler::{{closure}}::h5133679ed2524f54
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/panicking.rs:579:13
[INFO] [stderr]     12:     0x55fad58edabc - std::sys_common::backtrace::__rust_end_short_backtrace::hdb49be8d0a61a024
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/sys_common/backtrace.rs:137:18
[INFO] [stderr]     13:     0x55fad58eebd2 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/panicking.rs:575:5
[INFO] [stderr]     14:     0x55fad58c71c3 - core::panicking::panic_fmt::h0df9d8742cce2c6d
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/core/src/panicking.rs:65:14
[INFO] [stderr]     15:     0x55fad5909941 - core::panicking::panic_display::h77ec5dd2efd3c811
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/core/src/panicking.rs:138:5
[INFO] [stderr]     16:     0x55fad59098eb - core::panicking::panic_str::hef3fb3d24a6ce199
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/core/src/panicking.rs:122:5
[INFO] [stderr]     17:     0x55fad58c7186 - core::option::expect_failed::h68183b6d9253acef
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/core/src/option.rs:1879:5
[INFO] [stderr]     18:     0x55fad58d0764 - core::option::Option<T>::expect::h57073c7ff8218d35
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/core/src/option.rs:741:21
[INFO] [stderr]     19:     0x55fad58cd539 - build_script_build::main::h7808162d834d5853
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.69/build.rs:7:9
[INFO] [stderr]     20:     0x55fad58cf3db - core::ops::function::FnOnce::call_once::h5c96c228ba354d69
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/core/src/ops/function.rs:507:5
[INFO] [stderr]     21:     0x55fad58d010e - std::sys_common::backtrace::__rust_begin_short_backtrace::h6aa7fe1532e46282
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/sys_common/backtrace.rs:121:18
[INFO] [stderr]     22:     0x55fad58c9581 - std::rt::lang_start::{{closure}}::h70f839402ec7b01e
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/rt.rs:166:18
[INFO] [stderr]     23:     0x55fad58e7f6c - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hbca72c3be19ccbd4
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/core/src/ops/function.rs:606:13
[INFO] [stderr]     24:     0x55fad58e7f6c - std::panicking::try::do_call::h906fe64a4e5fabc3
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/panicking.rs:483:40
[INFO] [stderr]     25:     0x55fad58e7f6c - std::panicking::try::ha0352638fa5c430f
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/panicking.rs:447:19
[INFO] [stderr]     26:     0x55fad58e7f6c - std::panic::catch_unwind::he3b266bba4acb511
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/panic.rs:137:14
[INFO] [stderr]     27:     0x55fad58e7f6c - std::rt::lang_start_internal::{{closure}}::h177ffb10202722f6
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/rt.rs:148:48
[INFO] [stderr]     28:     0x55fad58e7f6c - std::panicking::try::do_call::hf2596bc808a1e564
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/panicking.rs:483:40
[INFO] [stderr]     29:     0x55fad58e7f6c - std::panicking::try::h701d9d08f21b67df
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/panicking.rs:447:19
[INFO] [stderr]     30:     0x55fad58e7f6c - std::panic::catch_unwind::haf8b82143ca6f508
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/panic.rs:137:14
[INFO] [stderr]     31:     0x55fad58e7f6c - std::rt::lang_start_internal::h39c930f836da0315
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/rt.rs:148:20
[INFO] [stderr]     32:     0x55fad58c955a - std::rt::lang_start::hd889c5f9d8700a43
[INFO] [stderr]                                  at /rustc/66a90ebb65988141d56cac36290f07711b1b1e2d/library/std/src/rt.rs:165:17
[INFO] [stderr]     33:     0x55fad58ce9ee - main
[INFO] [stderr]     34:     0x7fbda947c083 - __libc_start_main
[INFO] [stderr]     35:     0x55fad58c750e - _start
[INFO] [stderr]     36:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "d44b965831dfc6ff2e57e0bbc94d9053e9ff157763827112e71efdee6bbf6f79", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d44b965831dfc6ff2e57e0bbc94d9053e9ff157763827112e71efdee6bbf6f79", kill_on_drop: false }`
[INFO] [stdout] d44b965831dfc6ff2e57e0bbc94d9053e9ff157763827112e71efdee6bbf6f79