[INFO] fetching crate linux-support 0.0.1...
[INFO] testing linux-support-0.0.1 against beta-2020-10-09 for beta-1.48-1
[INFO] extracting crate linux-support 0.0.1 into /workspace/builds/worker-1/source
[INFO] validating manifest of crates.io crate linux-support 0.0.1 on toolchain beta-2020-10-09
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate linux-support 0.0.1
[INFO] finished tweaking crates.io crate linux-support 0.0.1
[INFO] tweaked toml for crates.io crate linux-support 0.0.1 written to /workspace/builds/worker-1/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-10-09" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded bit-vec v0.6.2
[INFO] [stderr]   Downloaded const_fn_assert v0.1.2
[INFO] [stderr]   Downloaded streaming-iterator v0.1.5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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" "+beta-2020-10-09" "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] 18342187ab1f66729678b05317e8d3950756ad69e6bc1aeb6901d0941f6b1892
[INFO] running `Command { std: "docker" "start" "-a" "18342187ab1f66729678b05317e8d3950756ad69e6bc1aeb6901d0941f6b1892", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "18342187ab1f66729678b05317e8d3950756ad69e6bc1aeb6901d0941f6b1892", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "18342187ab1f66729678b05317e8d3950756ad69e6bc1aeb6901d0941f6b1892", kill_on_drop: false }`
[INFO] [stdout] 18342187ab1f66729678b05317e8d3950756ad69e6bc1aeb6901d0941f6b1892
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1/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=warn" "-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" "+beta-2020-10-09" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6efcbc503f3e9d02784a3f94af9570b93e58b5c3b62d8c3d2c8f8bc4ad4334ed
[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" "6efcbc503f3e9d02784a3f94af9570b93e58b5c3b62d8c3d2c8f8bc4ad4334ed", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.79
[INFO] [stderr]    Compiling streaming-iterator v0.1.5
[INFO] [stderr]    Compiling likely v0.1.0
[INFO] [stderr]    Compiling const_fn_assert v0.1.2
[INFO] [stderr]    Compiling bit-vec v0.6.2
[INFO] [stderr]    Compiling memoffset v0.5.6
[INFO] [stderr]    Compiling indexmap v1.6.0
[INFO] [stderr]    Compiling raw-cpuid v5.0.0
[INFO] [stderr]    Compiling strum_macros v0.18.0
[INFO] [stderr]    Compiling either v1.6.1
[INFO] [stderr]    Compiling serde_bytes v0.11.5
[INFO] [stderr]    Compiling arrayvec v0.5.1
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the beta release channel
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/memoffset-0.5.6/src/lib.rs:62:5
[INFO] [stdout]    |
[INFO] [stdout] 62 | /     feature(
[INFO] [stdout] 63 | |         ptr_offset_from,
[INFO] [stdout] 64 | |         const_fn,
[INFO] [stdout] 65 | |         const_ptr_offset_from,
[INFO] [stdout] 66 | |         const_maybe_uninit_as_ptr,
[INFO] [stdout] 67 | |         const_raw_ptr_deref,
[INFO] [stdout] 68 | |     )
[INFO] [stdout]    | |_____^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stderr] error: failed to run custom build command for `libc v0.2.79`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/libc-7a475b354d911ffd/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   cargo:rustc-cfg=freebsd11
[INFO] [stderr]   cargo:rustc-cfg=libc_priv_mod_use
[INFO] [stderr]   cargo:rustc-cfg=libc_union
[INFO] [stderr]   cargo:rustc-cfg=libc_const_size_of
[INFO] [stderr]   cargo:rustc-cfg=libc_align
[INFO] [stderr]   cargo:rustc-cfg=libc_core_cvoid
[INFO] [stderr]   cargo:rustc-cfg=libc_packedN
[INFO] [stderr]   cargo:rustc-cfg=libc_cfg_target_vendor
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   thread 'main' panicked at 'const-extern-fn requires a nightly compiler >= 1.40', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.79/build.rs:81:13
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x56089d27c810 - std::backtrace_rs::backtrace::libunwind::trace::h7cf3ca97bd83fbab
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/../../backtrace/src/backtrace/libunwind.rs:96
[INFO] [stderr]      1:     0x56089d27c810 - std::backtrace_rs::backtrace::trace_unsynchronized::h5a69c674b2d9ea5c
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/../../backtrace/src/backtrace/mod.rs:66
[INFO] [stderr]      2:     0x56089d27c810 - std::sys_common::backtrace::_print_fmt::hdf72478dfcb50678
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:79
[INFO] [stderr]      3:     0x56089d27c810 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::h1e0bdbb35e83deca
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:58
[INFO] [stderr]      4:     0x56089d298dec - core::fmt::write::he67f9b17bcb7ee73
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/fmt/mod.rs:1080
[INFO] [stderr]      5:     0x56089d27a0a2 - std::io::Write::write_fmt::hac97d5cb5753e2ec
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/io/mod.rs:1516
[INFO] [stderr]      6:     0x56089d27e93d - std::sys_common::backtrace::_print::haa20918e28a126c5
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:61
[INFO] [stderr]      7:     0x56089d27e93d - std::sys_common::backtrace::print::h49e772a4873d9076
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:48
[INFO] [stderr]      8:     0x56089d27e93d - std::panicking::default_hook::{{closure}}::hb218b305d15e3f11
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:208
[INFO] [stderr]      9:     0x56089d27e5e8 - std::panicking::default_hook::h63997b7b949e1ce0
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:227
[INFO] [stderr]     10:     0x56089d27efc1 - std::panicking::rust_panic_with_hook::hb54f09ccadf64bd3
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:577
[INFO] [stderr]     11:     0x56089d265a38 - std::panicking::begin_panic::{{closure}}::h31716a4e796903c0
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:506
[INFO] [stderr]     12:     0x56089d25ea58 - std::sys_common::backtrace::__rust_end_short_backtrace::hc3a483f3e0f26a09
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:153
[INFO] [stderr]     13:     0x56089d265963 - std::panicking::begin_panic::h5e87c3d2817d354a
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:505
[INFO] [stderr]     14:     0x56089d25b962 - build_script_build::main::h48b1434cb5b0a0ca
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/libc-0.2.79/build.rs:81
[INFO] [stderr]     15:     0x56089d25f8fb - core::ops::function::FnOnce::call_once::h2a853d37a1c810ff
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:227
[INFO] [stderr]     16:     0x56089d25ea8e - std::sys_common::backtrace::__rust_begin_short_backtrace::hf9cf5991bb6e1649
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/sys_common/backtrace.rs:137
[INFO] [stderr]     17:     0x56089d265701 - std::rt::lang_start::{{closure}}::h364bf4dd26a533b3
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/rt.rs:66
[INFO] [stderr]     18:     0x56089d27f3e7 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::h908982dfc31b926f
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/core/src/ops/function.rs:259
[INFO] [stderr]     19:     0x56089d27f3e7 - std::panicking::try::do_call::h92777899503b7584
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:381
[INFO] [stderr]     20:     0x56089d27f3e7 - std::panicking::try::h8815656b2b76e792
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panicking.rs:345
[INFO] [stderr]     21:     0x56089d27f3e7 - std::panic::catch_unwind::h112ab81228f50b46
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/panic.rs:382
[INFO] [stderr]     22:     0x56089d27f3e7 - std::rt::lang_start_internal::h1772a706c7575c24
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/rt.rs:51
[INFO] [stderr]     23:     0x56089d2656d7 - std::rt::lang_start::hc5f203fd6868395f
[INFO] [stderr]                                  at /rustc/212e76c31d461462544b5d516d3bdc99fc8f016e/library/std/src/rt.rs:65
[INFO] [stderr]     24:     0x56089d25c75a - main
[INFO] [stderr]     25:     0x7fbc4e2420b3 - __libc_start_main
[INFO] [stderr]     26:     0x56089d25b0ae - _start
[INFO] [stderr]     27:                0x0 - <unknown>
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "6efcbc503f3e9d02784a3f94af9570b93e58b5c3b62d8c3d2c8f8bc4ad4334ed", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6efcbc503f3e9d02784a3f94af9570b93e58b5c3b62d8c3d2c8f8bc4ad4334ed", kill_on_drop: false }`
[INFO] [stdout] 6efcbc503f3e9d02784a3f94af9570b93e58b5c3b62d8c3d2c8f8bc4ad4334ed
