[INFO] fetching crate ubpf 0.1.0...
[INFO] checking ubpf-0.1.0 against master#af3c6e733a40e671550e0f0f5aeecaa13772ba56 for pr-74989
[INFO] extracting crate ubpf 0.1.0 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate ubpf 0.1.0 on toolchain af3c6e733a40e671550e0f0f5aeecaa13772ba56
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate ubpf 0.1.0
[INFO] finished tweaking crates.io crate ubpf 0.1.0
[INFO] tweaked toml for crates.io crate ubpf 0.1.0 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a589f803fa6e0d8653dd6e05725faf7a44d324632df095421abcaa51b23aec0a
[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" "a589f803fa6e0d8653dd6e05725faf7a44d324632df095421abcaa51b23aec0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a589f803fa6e0d8653dd6e05725faf7a44d324632df095421abcaa51b23aec0a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a589f803fa6e0d8653dd6e05725faf7a44d324632df095421abcaa51b23aec0a", kill_on_drop: false }`
[INFO] [stdout] a589f803fa6e0d8653dd6e05725faf7a44d324632df095421abcaa51b23aec0a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+af3c6e733a40e671550e0f0f5aeecaa13772ba56" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3b080271e2f3a145d482c70aa667519d6bb46e120058c63f0f772d2dbb998093
[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" "3b080271e2f3a145d482c70aa667519d6bb46e120058c63f0f772d2dbb998093", kill_on_drop: false }`
[INFO] [stderr]    Compiling ubpf-sys v0.1.1
[INFO] [stderr] error: failed to run custom build command for `ubpf-sys v0.1.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/ubpf-sys-df13c5ef14952444/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'Please specify CROSS_COMPILE=x86_64-linux-musl- cargo build --target=x86_64-unknown-linux-musl as the 'cc' crate incorrectly looks for musl-gcc', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ubpf-sys-0.1.1/src/build.rs:20:9
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x55573775b330 - std::backtrace_rs::backtrace::libunwind::trace::h452faf99f32e7c93
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stderr]      1:     0x55573775b330 - std::backtrace_rs::backtrace::trace_unsynchronized::he40edc71437667a1
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stderr]      2:     0x55573775b330 - std::sys_common::backtrace::_print_fmt::h6c51d6ade71f46bf
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/sys_common/backtrace.rs:79
[INFO] [stderr]      3:     0x55573775b330 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h3cd15d7003dec37a
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/sys_common/backtrace.rs:58
[INFO] [stderr]      4:     0x5557377786ec - core::fmt::write::h1857a60b204f1b6a
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/core/src/fmt/mod.rs:1080
[INFO] [stderr]      5:     0x555737758d27 - std::io::Write::write_fmt::hac61caff894c35ae
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/io/mod.rs:1517
[INFO] [stderr]      6:     0x55573775d440 - std::sys_common::backtrace::_print::haa2f390fb7957e3e
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/sys_common/backtrace.rs:61
[INFO] [stderr]      7:     0x55573775d440 - std::sys_common::backtrace::print::h48c7cbbad9013bb1
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/sys_common/backtrace.rs:48
[INFO] [stderr]      8:     0x55573775d440 - std::panicking::default_hook::{{closure}}::h8b7ff05a31e71d55
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/panicking.rs:208
[INFO] [stderr]      9:     0x55573775d18c - std::panicking::default_hook::h2f00c78800d98e4c
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/panicking.rs:227
[INFO] [stderr]     10:     0x55573775daa3 - std::panicking::rust_panic_with_hook::h4eaa635e4694aef3
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/panicking.rs:577
[INFO] [stderr]     11:     0x55573773ea68 - std::panicking::begin_panic::{{closure}}::heca495ab12165636
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/panicking.rs:506
[INFO] [stderr]     12:     0x55573773cc68 - std::sys_common::backtrace::__rust_end_short_backtrace::h4d078f64cac0724f
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/sys_common/backtrace.rs:153
[INFO] [stderr]     13:     0x55573773e993 - std::panicking::begin_panic::he6725bc855d27821
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/panicking.rs:505
[INFO] [stderr]     14:     0x555737741838 - build_script_build::tool::h3eaad3a92fc86319
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ubpf-sys-0.1.1/src/build.rs:20
[INFO] [stderr]     15:     0x555737741667 - build_script_build::main::h215ef8ab2062015c
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/ubpf-sys-0.1.1/src/build.rs:13
[INFO] [stderr]     16:     0x55573773cffb - core::ops::function::FnOnce::call_once::hd47541bec4ec852d
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/core/src/ops/function.rs:227
[INFO] [stderr]     17:     0x55573773cc9e - std::sys_common::backtrace::__rust_begin_short_backtrace::h782cb3331e01b92f
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/sys_common/backtrace.rs:137
[INFO] [stderr]     18:     0x55573773e4c1 - std::rt::lang_start::{{closure}}::h4f96d5623e1156fe
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/rt.rs:66
[INFO] [stderr]     19:     0x55573775dea1 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hecc21eb9018cc197
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/core/src/ops/function.rs:259
[INFO] [stderr]     20:     0x55573775dea1 - std::panicking::try::do_call::h174ad655d084b5c7
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/panicking.rs:381
[INFO] [stderr]     21:     0x55573775dea1 - std::panicking::try::h479e6054ce28de10
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/panicking.rs:345
[INFO] [stderr]     22:     0x55573775dea1 - std::panic::catch_unwind::hb558ddea2b3e9c45
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/panic.rs:382
[INFO] [stderr]     23:     0x55573775dea1 - std::rt::lang_start_internal::h163149047f0a8b61
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/rt.rs:51
[INFO] [stderr]     24:     0x55573773e497 - std::rt::lang_start::h91d0bfc47c02c040
[INFO] [stderr]                                  at /rustc/af3c6e733a40e671550e0f0f5aeecaa13772ba56/library/std/src/rt.rs:65
[INFO] [stderr]     25:     0x5557377422ea - main
[INFO] [stderr]     26:     0x7ff0bcde40b3 - __libc_start_main
[INFO] [stderr]     27:     0x55573773a0ae - _start
[INFO] [stderr]     28:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "3b080271e2f3a145d482c70aa667519d6bb46e120058c63f0f772d2dbb998093", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3b080271e2f3a145d482c70aa667519d6bb46e120058c63f0f772d2dbb998093", kill_on_drop: false }`
[INFO] [stdout] 3b080271e2f3a145d482c70aa667519d6bb46e120058c63f0f772d2dbb998093
