[INFO] fetching crate deno_plugin_num_cpus 0.1.2...
[INFO] testing deno_plugin_num_cpus-0.1.2 against beta-2021-01-01 for beta-1.50-1
[INFO] extracting crate deno_plugin_num_cpus 0.1.2 into /workspace/builds/worker-6/source
[INFO] validating manifest of crates.io crate deno_plugin_num_cpus 0.1.2 on toolchain beta-2021-01-01
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] removed /workspace/builds/worker-6/source/.cargo/config
[INFO] started tweaking crates.io crate deno_plugin_num_cpus 0.1.2
[INFO] finished tweaking crates.io crate deno_plugin_num_cpus 0.1.2
[INFO] tweaked toml for crates.io crate deno_plugin_num_cpus 0.1.2 written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2021-01-01" "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-2021-01-01" "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-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" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4037c7947098a6c4881cb1e5057233006f1213f642987728b5e106ba1a3b1821
[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" "4037c7947098a6c4881cb1e5057233006f1213f642987728b5e106ba1a3b1821", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4037c7947098a6c4881cb1e5057233006f1213f642987728b5e106ba1a3b1821", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4037c7947098a6c4881cb1e5057233006f1213f642987728b5e106ba1a3b1821", kill_on_drop: false }`
[INFO] [stdout] 4037c7947098a6c4881cb1e5057233006f1213f642987728b5e106ba1a3b1821
[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=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:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2021-01-01" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 742403c7e8fc12db23880e311176479868cf8cc070aef134ceb2fc556e5cfd8f
[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" "742403c7e8fc12db23880e311176479868cf8cc070aef134ceb2fc556e5cfd8f", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.24
[INFO] [stderr]    Compiling unicode-xid v0.2.1
[INFO] [stderr]    Compiling syn v1.0.57
[INFO] [stderr]    Compiling libc v0.2.81
[INFO] [stderr]    Compiling proc-macro-hack v0.5.19
[INFO] [stderr]    Compiling proc-macro-nested v0.1.6
[INFO] [stderr]    Compiling memchr v2.3.4
[INFO] [stderr]    Compiling futures-sink v0.3.8
[INFO] [stderr]    Compiling once_cell v1.5.2
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling matches v0.1.8
[INFO] [stderr]    Compiling futures-core v0.3.8
[INFO] [stderr]    Compiling tinyvec_macros v0.1.0
[INFO] [stderr]    Compiling cargo_gn v0.0.15
[INFO] [stderr]    Compiling pin-utils v0.1.0
[INFO] [stderr]    Compiling serde v1.0.118
[INFO] [stderr]    Compiling bitflags v1.2.1
[INFO] [stderr]    Compiling slab v0.4.2
[INFO] [stderr]    Compiling futures-io v0.3.8
[INFO] [stderr]    Compiling ryu v1.0.5
[INFO] [stderr]    Compiling log v0.4.11
[INFO] [stderr]    Compiling percent-encoding v2.1.0
[INFO] [stderr]    Compiling hashbrown v0.9.1
[INFO] [stderr]    Compiling serde_json v1.0.61
[INFO] [stderr]    Compiling cfg-if v0.1.10
[INFO] [stderr]    Compiling lazy_static v1.4.0
[INFO] [stderr]    Compiling itoa v0.4.7
[INFO] [stderr]    Compiling downcast-rs v1.2.0
[INFO] [stderr]    Compiling smallvec v1.6.0
[INFO] [stderr]    Compiling unicode-bidi v0.3.4
[INFO] [stderr]    Compiling tinyvec v1.1.0
[INFO] [stderr]    Compiling futures-channel v0.3.8
[INFO] [stderr]    Compiling futures-task v0.3.8
[INFO] [stderr]    Compiling form_urlencoded v1.0.0
[INFO] [stderr]    Compiling indexmap v1.6.1
[INFO] [stderr]    Compiling quote v1.0.8
[INFO] [stderr]    Compiling num_cpus v1.13.0
[INFO] [stderr]    Compiling unicode-normalization v0.1.16
[INFO] [stderr]    Compiling idna v0.2.0
[INFO] [stderr]    Compiling url v2.2.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.23
[INFO] [stderr]    Compiling pin-project-internal v1.0.2
[INFO] [stderr]    Compiling futures-macro v0.3.8
[INFO] [stderr]    Compiling thiserror v1.0.23
[INFO] [stderr]    Compiling which v4.0.2
[INFO] [stderr]    Compiling pin-project v1.0.2
[INFO] [stderr]    Compiling rusty_v8 v0.8.1
[INFO] [stderr]    Compiling futures-util v0.3.8
[INFO] [stderr]    Compiling futures-executor v0.3.8
[INFO] [stderr]    Compiling futures v0.3.8
[INFO] [stderr] error: failed to run custom build command for `rusty_v8 v0.8.1`
[INFO] [stderr] 
[INFO] [stderr] Caused by:
[INFO] [stderr]   process didn't exit successfully: `/opt/rustwide/target/debug/build/rusty_v8-716e12eb685126f4/build-script-build` (exit code: 101)
[INFO] [stderr]   --- stdout
[INFO] [stderr]   static lib URL: https://github.com/denoland/rusty_v8/releases/download/v0.8.1/librusty_v8_debug_x86_64-unknown-linux-gnu.a
[INFO] [stderr]   cargo:rustc-link-search=/opt/rustwide/target/debug/gn_out/obj
[INFO] [stderr]   Downloading https://github.com/denoland/rusty_v8/releases/download/v0.8.1/librusty_v8_debug_x86_64-unknown-linux-gnu.a
[INFO] [stderr]   Downloading https://github.com/denoland/rusty_v8/releases/download/v0.8.1/librusty_v8_debug_x86_64-unknown-linux-gnu.a...
[INFO] [stderr]   <urlopen error [Errno -3] Temporary failure in name resolution>
[INFO] [stderr]   Retrying in 5 s ...
[INFO] [stderr]   Downloading https://github.com/denoland/rusty_v8/releases/download/v0.8.1/librusty_v8_debug_x86_64-unknown-linux-gnu.a...
[INFO] [stderr]   <urlopen error [Errno -3] Temporary failure in name resolution>
[INFO] [stderr]   Retrying in 10 s ...
[INFO] [stderr]   Downloading https://github.com/denoland/rusty_v8/releases/download/v0.8.1/librusty_v8_debug_x86_64-unknown-linux-gnu.a...
[INFO] [stderr]   <urlopen error [Errno -3] Temporary failure in name resolution>
[INFO] [stderr]   Retrying in 20 s ...
[INFO] [stderr]   Downloading https://github.com/denoland/rusty_v8/releases/download/v0.8.1/librusty_v8_debug_x86_64-unknown-linux-gnu.a...
[INFO] [stderr]   <urlopen error [Errno -3] Temporary failure in name resolution>
[INFO] [stderr]   Python downloader failed, trying with curl.
[INFO] [stderr] 
[INFO] [stderr]   --- stderr
[INFO] [stderr]   Traceback (most recent call last):
[INFO] [stderr]     File "./tools/download_file.py", line 63, in <module>
[INFO] [stderr]       sys.exit(main())
[INFO] [stderr]     File "./tools/download_file.py", line 58, in main
[INFO] [stderr]       DownloadUrl(args.url, f)
[INFO] [stderr]     File "./tools/download_file.py", line 44, in DownloadUrl
[INFO] [stderr]       raise e
[INFO] [stderr]   urllib2.URLError: <urlopen error [Errno -3] Temporary failure in name resolution>
[INFO] [stderr]   thread 'main' panicked at 'assertion failed: status.success()', /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusty_v8-0.8.1/build.rs:224:3
[INFO] [stderr]   stack backtrace:
[INFO] [stderr]      0:     0x555923774cd7 - std::backtrace_rs::backtrace::libunwind::trace::hcd6e187547b8deec
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/../../backtrace/src/backtrace/libunwind.rs:90:5
[INFO] [stderr]      1:     0x555923774cd7 - std::backtrace_rs::backtrace::trace_unsynchronized::hde10036eb783fbc7
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/../../backtrace/src/backtrace/mod.rs:66:5
[INFO] [stderr]      2:     0x555923774cd7 - std::sys_common::backtrace::_print_fmt::h63987b8f86dfc82a
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:67:5
[INFO] [stderr]      3:     0x555923774cd7 - <std::sys_common::backtrace::_print::DisplayBacktrace as core::fmt::Display>::fmt::hc33f3ac4cc9c4196
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:46:22
[INFO] [stderr]      4:     0x55592379019c - core::fmt::write::hfdcdeb08fb2b3afa
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/fmt/mod.rs:1078:17
[INFO] [stderr]      5:     0x5559237714e2 - std::io::Write::write_fmt::h83a843778fa2a815
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/io/mod.rs:1519:15
[INFO] [stderr]      6:     0x555923776ba5 - std::sys_common::backtrace::_print::hf179508b01f66878
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:49:5
[INFO] [stderr]      7:     0x555923776ba5 - std::sys_common::backtrace::print::ha97d11adb39266a6
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:36:9
[INFO] [stderr]      8:     0x555923776ba5 - std::panicking::default_hook::{{closure}}::h8da9985a98bd1582
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:208:50
[INFO] [stderr]      9:     0x5559237766fa - std::panicking::default_hook::hbc0ee792993c2ef2
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:225:9
[INFO] [stderr]     10:     0x555923777341 - std::panicking::rust_panic_with_hook::h9fb9cda33a10f084
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:591:17
[INFO] [stderr]     11:     0x555923776e57 - std::panicking::begin_panic_handler::{{closure}}::hf3e83396e085962e
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:495:13
[INFO] [stderr]     12:     0x55592377519c - std::sys_common::backtrace::__rust_end_short_backtrace::hac151ac4c1e3252d
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:141:18
[INFO] [stderr]     13:     0x555923776de9 - rust_begin_unwind
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:493:5
[INFO] [stderr]     14:     0x55592378f571 - core::panicking::panic_fmt::hf6d8a92b065b8f97
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/panicking.rs:92:14
[INFO] [stderr]     15:     0x55592378f4bd - core::panicking::panic::h95b17729da7179c5
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/panicking.rs:50:5
[INFO] [stderr]     16:     0x555923720cb5 - build_script_build::download_file::h0dc80ad29d58d3f7
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusty_v8-0.8.1/build.rs:224:3
[INFO] [stderr]     17:     0x555923721475 - build_script_build::download_static_lib_binaries::h61101eba3f5ab349
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusty_v8-0.8.1/build.rs:257:5
[INFO] [stderr]     18:     0x55592371e342 - build_script_build::main::h53a3d0c8824ff4e1
[INFO] [stderr]                                  at /opt/rustwide/cargo-home/registry/src/github.com-1ecc6299db9ec823/rusty_v8-0.8.1/build.rs:29:7
[INFO] [stderr]     19:     0x55592372b10b - core::ops::function::FnOnce::call_once::hd4d4b287abe05b5b
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/ops/function.rs:227:5
[INFO] [stderr]     20:     0x555923729e1e - std::sys_common::backtrace::__rust_begin_short_backtrace::h75819f7bd0c9115c
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/sys_common/backtrace.rs:125:18
[INFO] [stderr]     21:     0x555923726481 - std::rt::lang_start::{{closure}}::hd330989b8d1c822d
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/rt.rs:66:18
[INFO] [stderr]     22:     0x555923777767 - core::ops::function::impls::<impl core::ops::function::FnOnce<A> for &F>::call_once::hb5ab992a536e3d7c
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/core/src/ops/function.rs:259:13
[INFO] [stderr]     23:     0x555923777767 - std::panicking::try::do_call::h1bda883686bc1816
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:379:40
[INFO] [stderr]     24:     0x555923777767 - std::panicking::try::ha7167c079f243e71
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panicking.rs:343:19
[INFO] [stderr]     25:     0x555923777767 - std::panic::catch_unwind::he11c3de53f0b5853
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/panic.rs:396:14
[INFO] [stderr]     26:     0x555923777767 - std::rt::lang_start_internal::h45c3666b51d25060
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/rt.rs:51:25
[INFO] [stderr]     27:     0x555923726457 - std::rt::lang_start::h8679167e677341fa
[INFO] [stderr]                                  at /rustc/25b3db3aa752d9d4633c983c9d4bf5e48f9baff1/library/std/src/rt.rs:65:5
[INFO] [stderr]     28:     0x5559237226ba - main
[INFO] [stderr]     29:     0x7fcc9f01b0b3 - __libc_start_main
[INFO] [stderr]     30:     0x55592371e0be - _start
[INFO] [stderr]     31:                0x0 - <unknown>
[INFO] running `Command { std: "docker" "inspect" "742403c7e8fc12db23880e311176479868cf8cc070aef134ceb2fc556e5cfd8f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "742403c7e8fc12db23880e311176479868cf8cc070aef134ceb2fc556e5cfd8f", kill_on_drop: false }`
[INFO] [stdout] 742403c7e8fc12db23880e311176479868cf8cc070aef134ceb2fc556e5cfd8f