[INFO] fetching crate nanny 0.0.9...
[INFO] checking nanny-0.0.9 against try#9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c for pr-79472
[INFO] extracting crate nanny 0.0.9 into /workspace/builds/worker-5/source
[INFO] validating manifest of crates.io crate nanny 0.0.9 on toolchain 9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate nanny 0.0.9
[INFO] removed path dependency nanny-sys from crates.io crate nanny 0.0.9
[INFO] finished tweaking crates.io crate nanny 0.0.9
[INFO] tweaked toml for crates.io crate nanny 0.0.9 written to /workspace/builds/worker-5/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "fetch" "--locked" "--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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] 47c4158377b61e34a8a28641f7c0130446d4f2fed58166b60fa66e63617969a1
[INFO] running `Command { std: "docker" "start" "-a" "47c4158377b61e34a8a28641f7c0130446d4f2fed58166b60fa66e63617969a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "47c4158377b61e34a8a28641f7c0130446d4f2fed58166b60fa66e63617969a1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "47c4158377b61e34a8a28641f7c0130446d4f2fed58166b60fa66e63617969a1", kill_on_drop: false }`
[INFO] [stdout] 47c4158377b61e34a8a28641f7c0130446d4f2fed58166b60fa66e63617969a1
[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" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 04d6b14d8c8a6d4e6f8483543dd7815c151933f29235756fec0ee82306aac921
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "04d6b14d8c8a6d4e6f8483543dd7815c151933f29235756fec0ee82306aac921", kill_on_drop: false }`
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]    Compiling nanny-sys v0.0.6
[INFO] [stderr] error: failed to run custom build command for `nanny-sys v0.0.6`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/nanny-sys-bd412bae5ea5fbb1/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'called `Option::unwrap()` on a `None` value', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nanny-sys-0.0.6/build.rs:23:54
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x556fe20b4e70 - std::backtrace_rs::backtrace::libunwind::trace::h746c3e9529d524bc
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x556fe20b4e70 - std::backtrace_rs::backtrace::trace_unsynchronized::h86340908ff889faa
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x556fe20b4e70 - std::sys_common::backtrace::_print_fmt::h43f85f9b18230404
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x556fe20b4e70 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hc132ae1a5b5aa7cd
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x556fe20d4cfc - core::fmt::write::hdf023a0036d2a25f
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/core/src/fmt/mod.rs:1078:17
[INFO] [stderr]      5:     0x556fe20b0d82 - std::io::Write::write_fmt::h8580846154bcb66a
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/io/mod.rs:1519:15
[INFO] [stderr]      6:     0x556fe20b6f75 - std::sys_common::backtrace::_print::h7ee55fed88d107a3
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x556fe20b6f75 - std::sys_common::backtrace::print::h54a7d3e52a524177
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x556fe20b6f75 - std::panicking::default_hook::{{closure}}::h60921e857bf55a40
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x556fe20b6aca - std::panicking::default_hook::hf0f9afb1017317fc
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x556fe20b7711 - std::panicking::rust_panic_with_hook::h8d66bf42b407aaea
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/panicking.rs:591:17
[INFO] [stderr]     11:     0x556fe20b7227 - std::panicking::begin_panic_handler::{{closure}}::hde71edcd925d0c5e
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/panicking.rs:495:13
[INFO] [stderr]     12:     0x556fe20b532c - std::sys_common::backtrace::__rust_end_short_backtrace::h8a3c7d6cea578919
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x556fe20b71b9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x556fe20d40a1 - core::panicking::panic_fmt::h20225113c4a2f8fd
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x556fe20d3fed - core::panicking::panic::h35b77276aa4b0c12
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/core/src/panicking.rs:50:5
[INFO] [stderr]     16:     0x556fe20601f8 - core::option::Option<T>::unwrap::h818d6d32149df7c6
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/core/src/option.rs:386:21
[INFO] [stderr]     17:     0x556fe20609ef - build_script_build::build_object_file::h61167f73b6e76204
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nanny-sys-0.0.6/build.rs:23:5
[INFO] [stderr]     18:     0x556fe2060d26 - build_script_build::main::hc8d430a621f88ac4
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/nanny-sys-0.0.6/build.rs:41:5
[INFO] [stderr]     19:     0x556fe206064b - core::ops::function::FnOnce::call_once::h40afd989b4f4537f
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     20:     0x556fe20602fe - std::sys_common::backtrace::__rust_begin_short_backtrace::hc64d232dce4b5593
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     21:     0x556fe2060281 - std::rt::lang_start::{{closure}}::h95bc8aeb24c0004d
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/rt.rs:66:18
[INFO] [stderr]     22:     0x556fe20b7b37 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h54c39b9b8451875a
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     23:     0x556fe20b7b37 - std::panicking::try::do_call::hcdfba51a06e21b42
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/panicking.rs:379:40
[INFO] [stderr]     24:     0x556fe20b7b37 - std::panicking::try::hb36953ccd24f930d
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/panicking.rs:343:19
[INFO] [stderr]     25:     0x556fe20b7b37 - std::panic::catch_unwind::hbb374cd03beb3824
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/panic.rs:396:14
[INFO] [stderr]     26:     0x556fe20b7b37 - std::rt::lang_start_internal::h97dca9624db2aa85
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/rt.rs:51:25
[INFO] [stderr]     27:     0x556fe2060257 - std::rt::lang_start::hd8ebf78831f78f24
[INFO] [stderr]                                  at /rustc/9b49d8c6c904f63eb486fe51b14bbe0aa2feda4c/library/std/src/rt.rs:65:5
[INFO] [stderr]     28:     0x556fe2060d5a - main
[INFO] [stderr]     29:     0x7fe44a5870b3 - __libc_start_main
[INFO] [stderr]     30:     0x556fe20600be - _start
[INFO] [stderr]     31:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "04d6b14d8c8a6d4e6f8483543dd7815c151933f29235756fec0ee82306aac921", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "04d6b14d8c8a6d4e6f8483543dd7815c151933f29235756fec0ee82306aac921", kill_on_drop: false }`
[INFO] [stdout] 04d6b14d8c8a6d4e6f8483543dd7815c151933f29235756fec0ee82306aac921