[INFO] cloning repository https://github.com/zacbrown/rusty-netconn
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/zacbrown/rusty-netconn" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzacbrown%2Frusty-netconn", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzacbrown%2Frusty-netconn'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f0b0c5ea4312002fc4eb75d71b67fd8104f51dd5
[INFO] testing zacbrown/rusty-netconn against 1.49.0 for beta-1.50-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzacbrown%2Frusty-netconn" "/workspace/builds/worker-12/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-12/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zacbrown/rusty-netconn on toolchain 1.49.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/zacbrown/rusty-netconn
[INFO] finished tweaking git repo https://github.com/zacbrown/rusty-netconn
[INFO] tweaked toml for git repo https://github.com/zacbrown/rusty-netconn written to /workspace/builds/worker-12/source/Cargo.toml
[INFO] crate git repo https://github.com/zacbrown/rusty-netconn already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 32c29f6f67a6e0d7f2ddb4ae8a031d9ef57b84a0d7a51010b427918b4d130e19
[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" "32c29f6f67a6e0d7f2ddb4ae8a031d9ef57b84a0d7a51010b427918b4d130e19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "32c29f6f67a6e0d7f2ddb4ae8a031d9ef57b84a0d7a51010b427918b4d130e19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "32c29f6f67a6e0d7f2ddb4ae8a031d9ef57b84a0d7a51010b427918b4d130e19", kill_on_drop: false }`
[INFO] [stdout] 32c29f6f67a6e0d7f2ddb4ae8a031d9ef57b84a0d7a51010b427918b4d130e19
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-12/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" "+1.49.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d9e7644710ff9148fe0c1daf244b8c18ec21f327febba172ee1cc9d7478b4c01
[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" "d9e7644710ff9148fe0c1daf244b8c18ec21f327febba172ee1cc9d7478b4c01", kill_on_drop: false }`
[INFO] [stderr]    Compiling pnet_base v0.21.0
[INFO] [stderr]    Compiling ipnetwork v0.12.8
[INFO] [stderr]    Compiling pnet v0.21.0
[INFO] [stderr]    Compiling pcap v0.7.0
[INFO] [stderr]    Compiling pnet_sys v0.21.0
[INFO] [stderr]    Compiling memchr v1.0.2
[INFO] [stderr]    Compiling atty v0.2.9
[INFO] [stderr]    Compiling regex-syntax v0.5.5
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]    Compiling bytes v0.4.6
[INFO] [stderr]    Compiling mio v0.6.14
[INFO] [stderr]    Compiling crossbeam-epoch v0.4.1
[INFO] [stderr]    Compiling tokio-timer v0.2.1
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]    Compiling pnet_macros_support v0.21.0
[INFO] [stderr]    Compiling csv v0.15.0
[INFO] [stderr]    Compiling pnet_datalink v0.21.0
[INFO] [stderr]    Compiling crossbeam-deque v0.3.0
[INFO] [stderr]    Compiling tokio-io v0.1.6
[INFO] [stderr]    Compiling syntex_syntax v0.42.0
[INFO] [stderr]    Compiling tokio-threadpool v0.1.2
[INFO] [stderr]    Compiling prettytable-rs v0.6.7
[INFO] [stderr]    Compiling tokio-reactor v0.1.1
[INFO] [stderr]    Compiling tokio-tcp v0.1.0
[INFO] [stderr]    Compiling tokio-udp v0.1.0
[INFO] [stderr]    Compiling tokio v0.1.5
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr]    Compiling syntex v0.42.2
[INFO] [stderr]    Compiling pnet_macros v0.21.0
[INFO] [stderr]    Compiling pnet_packet v0.21.0
[INFO] [stderr]    Compiling pnet_transport v0.21.0
[INFO] [stderr]    Compiling rusty-netconns v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:129:13
[INFO] [stdout]     |
[INFO] [stdout] 129 |         let mut stats = {
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:183:13
[INFO] [stdout]     |
[INFO] [stdout] 183 |         let mut stats = {
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:217:13
[INFO] [stdout]     |
[INFO] [stdout] 217 |         let mut stats = {
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/main.rs:251:13
[INFO] [stdout]     |
[INFO] [stdout] 251 |         let mut stats = {
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: linking with `cc` failed: exit code: 1
[INFO] [stdout]   |
[INFO] [stdout]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-Wl,--eh-frame-hdr" "-L" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/rusty_netconns-a4fff061ebe21b41.rusty_netconns.tz2rpz0p-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-a4fff061ebe21b41.rusty_netconns.tz2rpz0p-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-a4fff061ebe21b41.rusty_netconns.tz2rpz0p-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-a4fff061ebe21b41.rusty_netconns.tz2rpz0p-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-a4fff061ebe21b41.rusty_netconns.tz2rpz0p-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-a4fff061ebe21b41.rusty_netconns.tz2rpz0p-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-a4fff061ebe21b41.rusty_netconns.tz2rpz0p-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-a4fff061ebe21b41.rusty_netconns.tz2rpz0p-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-a4fff061ebe21b41.rusty_netconns.tz2rpz0p-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-a4fff061ebe21b41.rusty_netconns.tz2rpz0p-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-a4fff061ebe21b41.rusty_netconns.tz2rpz0p-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-a4fff061ebe21b41.rusty_netconns.tz2rpz0p-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-a4fff061ebe21b41.rusty_netconns.tz2rpz0p-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-a4fff061ebe21b41.rusty_netconns.tz2rpz0p-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-a4fff061ebe21b41.rusty_netconns.tz2rpz0p-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-a4fff061ebe21b41.rusty_netconns.tz2rpz0p-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/rusty_netconns-a4fff061ebe21b41" "/opt/rustwide/target/debug/deps/rusty_netconns-a4fff061ebe21b41.j36zmcd9mftpk8u.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libprettytable-f865d611effcfee0.rlib" "/opt/rustwide/target/debug/deps/libencode_unicode-af3322b81a974038.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-9850e1ed257f46c2.rlib" "/opt/rustwide/target/debug/deps/libcsv-4ffc06855c7b68cb.rlib" "/opt/rustwide/target/debug/deps/librustc_serialize-cf160550f07bf347.rlib" "/opt/rustwide/target/debug/deps/libmemchr-e609f636ecfe483b.rlib" "/opt/rustwide/target/debug/deps/libatty-e019e79c2572b357.rlib" "/opt/rustwide/target/debug/deps/libterm-2ed5a45c6bc95c23.rlib" "/opt/rustwide/target/debug/deps/libunicode_width-4dd2557e3fc1d326.rlib" "/opt/rustwide/target/debug/deps/libpnet-1a5bda917183e825.rlib" "/opt/rustwide/target/debug/deps/libpnet_transport-d4c9521c924783be.rlib" "/opt/rustwide/target/debug/deps/libpnet_packet-7982851c52fe6f62.rlib" "/opt/rustwide/target/debug/deps/libpnet_macros_support-0d3d0db1727c99b6.rlib" "/opt/rustwide/target/debug/deps/libpnet_datalink-62633c10f3a9f9d9.rlib" "/opt/rustwide/target/debug/deps/libpnet_sys-67745fa526da6831.rlib" "/opt/rustwide/target/debug/deps/libpnet_base-4e042d4eaaa7b580.rlib" "/opt/rustwide/target/debug/deps/libipnetwork-d484c140db1933b0.rlib" "/opt/rustwide/target/debug/deps/libpcap-bce42a9fc38b3e4b.rlib" "/opt/rustwide/target/debug/deps/libtokio_core-b38a7a6f9daf93b1.rlib" "/opt/rustwide/target/debug/deps/libscoped_tls-4536b23c8eceea08.rlib" "/opt/rustwide/target/debug/deps/libtokio-a4685c91a2be1e09.rlib" "/opt/rustwide/target/debug/deps/libtokio_udp-eb4e6a94c22658fc.rlib" "/opt/rustwide/target/debug/deps/libtokio_tcp-ed0bf8eaf578f2b2.rlib" "/opt/rustwide/target/debug/deps/libtokio_timer-05090e46325f5be4.rlib" "/opt/rustwide/target/debug/deps/libtokio_threadpool-d645721243a73135.rlib" "/opt/rustwide/target/debug/deps/librand-8c6ddfa7cdcea76d.rlib" "/opt/rustwide/target/debug/deps/libnum_cpus-433a6e70aa09635b.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_deque-d7cfe93f0e255638.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_utils-eae038c6028fad36.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_epoch-4c45dd393eedac26.rlib" "/opt/rustwide/target/debug/deps/libscopeguard-c0e1396086f307bb.rlib" "/opt/rustwide/target/debug/deps/libmemoffset-e9bde307deef8c75.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-8ecd7f2ccd4c8fd1.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_utils-917b5aff02c18a51.rlib" "/opt/rustwide/target/debug/deps/libarrayvec-42c3bdb28b639751.rlib" "/opt/rustwide/target/debug/deps/libnodrop-9cbcd2660bcf4f7e.rlib" "/opt/rustwide/target/debug/deps/libtokio_reactor-10d6bd6444cacddd.rlib" "/opt/rustwide/target/debug/deps/libtokio_executor-5609d63c0968aa1a.rlib" "/opt/rustwide/target/debug/deps/libtokio_io-cafa13804528c0cc.rlib" "/opt/rustwide/target/debug/deps/libbytes-96a4e1689fc338ba.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-b0a48f574a7f4ca4.rlib" "/opt/rustwide/target/debug/deps/libfutures-8f40ebba158808f6.rlib" "/opt/rustwide/target/debug/deps/libmio-f2ca4d754a258db9.rlib" "/opt/rustwide/target/debug/deps/liblog-38e49889e2943a68.rlib" "/opt/rustwide/target/debug/deps/libslab-3b53302bf982e162.rlib" "/opt/rustwide/target/debug/deps/libiovec-dd8744121e305765.rlib" "/opt/rustwide/target/debug/deps/libnet2-1083329271f712c0.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-eb5ecedec54aa001.rlib" "/opt/rustwide/target/debug/deps/liblazycell-3fc042b53f8a9e47.rlib" "/opt/rustwide/target/debug/deps/liblibc-9add9ca391b1258b.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-e12de7683a34c500.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-446a53c2e468675f.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libminiz_oxide-86fef9fb252a2d33.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libadler-3bed9bfd30304751.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libobject-0e38eeb474a7b386.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libaddr2line-a846ed547b824740.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgimli-c9540f0a4fb9265d.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-7d2ca66c92c356eb.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-147e2c808f949493.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-bd2a4369506670e9.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-74bfdd0ce7d0ed48.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-6777f47f1c491841.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-b104f1790174f2be.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-db37898996f45c13.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-25b7435131fc4938.rlib" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-9d4b6f3c097e876e.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/1.49.0-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-3f953ad652ab829a.rlib" "-Wl,-Bdynamic" "-lpcap" "-lutil" "-lutil" "-lgcc_s" "-lutil" "-lrt" "-lpthread" "-lm" "-ldl" "-lc"
[INFO] [stdout]   = note: /usr/bin/ld: cannot find -lpcap
[INFO] [stdout]           collect2: error: ld returned 1 exit status
[INFO] [stdout]           
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rusty-netconns`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "d9e7644710ff9148fe0c1daf244b8c18ec21f327febba172ee1cc9d7478b4c01", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d9e7644710ff9148fe0c1daf244b8c18ec21f327febba172ee1cc9d7478b4c01", kill_on_drop: false }`
[INFO] [stdout] d9e7644710ff9148fe0c1daf244b8c18ec21f327febba172ee1cc9d7478b4c01