[INFO] updating cached 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" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] f0b0c5ea4312002fc4eb75d71b67fd8104f51dd5
[INFO] testing zacbrown/rusty-netconn against try#03a1ea71b075ab964b5278bc6e74cd6c52c36ee0 for pr-74409
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fzacbrown%2Frusty-netconn" "/workspace/builds/worker-1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/zacbrown/rusty-netconn on toolchain 03a1ea71b075ab964b5278bc6e74cd6c52c36ee0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "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-1/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" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 72140faeab425760aa9dada9adbf5874493e567b75918dee31699e75ab797a4a
[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" "72140faeab425760aa9dada9adbf5874493e567b75918dee31699e75ab797a4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "72140faeab425760aa9dada9adbf5874493e567b75918dee31699e75ab797a4a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72140faeab425760aa9dada9adbf5874493e567b75918dee31699e75ab797a4a", kill_on_drop: false }`
[INFO] [stdout] 72140faeab425760aa9dada9adbf5874493e567b75918dee31699e75ab797a4a
[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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:d9fbb4e2287ab3795bdefaf705efb7541a8875c13bce71e067d6b01dc5ed759b" "/opt/rustwide/cargo-home/bin/cargo" "+03a1ea71b075ab964b5278bc6e74cd6c52c36ee0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f5fab4dfefc195fa41d4e517b4de0f49a6b109df0eedc0847c005bac5c9ceb2e
[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" "f5fab4dfefc195fa41d4e517b4de0f49a6b109df0eedc0847c005bac5c9ceb2e", kill_on_drop: false }`
[INFO] [stderr]    Compiling rustc-serialize v0.3.24
[INFO] [stderr]    Compiling term v0.4.6
[INFO] [stderr]    Compiling void v1.0.2
[INFO] [stderr]    Compiling unicode-xid v0.0.3
[INFO] [stderr]    Compiling bitflags v0.5.0
[INFO] [stderr]    Compiling memoffset v0.2.1
[INFO] [stderr]    Compiling pnet_base v0.21.0
[INFO] [stderr]    Compiling glob v0.2.11
[INFO] [stderr]    Compiling pnet v0.21.0
[INFO] [stderr]    Compiling pcap v0.7.0
[INFO] [stderr]    Compiling ipnetwork v0.12.8
[INFO] [stderr]    Compiling lazy_static v0.2.11
[INFO] [stderr]    Compiling encode_unicode v0.3.1
[INFO] [stderr]    Compiling unicode-width v0.1.4
[INFO] [stderr]    Compiling pnet_sys v0.21.0
[INFO] [stderr]    Compiling atty v0.2.9
[INFO] [stderr]    Compiling arrayvec v0.4.7
[INFO] [stderr]    Compiling log v0.4.1
[INFO] [stderr]    Compiling net2 v0.2.32
[INFO] [stderr]    Compiling crossbeam-utils v0.3.2
[INFO] [stderr]    Compiling crossbeam-utils v0.2.2
[INFO] [stderr]    Compiling unreachable v1.0.0
[INFO] [stderr]    Compiling pnet_macros_support v0.21.0
[INFO] [stderr]    Compiling thread_local v0.3.5
[INFO] [stderr]    Compiling log v0.3.9
[INFO] [stderr]    Compiling tokio-io v0.1.6
[INFO] [stderr]    Compiling pnet_datalink v0.21.0
[INFO] [stderr]    Compiling crossbeam-epoch v0.4.1
[INFO] [stderr]    Compiling regex v0.2.10
[INFO] [stderr]    Compiling mio v0.6.14
[INFO] [stderr]    Compiling crossbeam-deque v0.3.0
[INFO] [stderr]    Compiling tokio-threadpool v0.1.2
[INFO] [stderr]    Compiling tokio-reactor v0.1.1
[INFO] [stderr]    Compiling tokio-udp v0.1.0
[INFO] [stderr]    Compiling tokio-tcp v0.1.0
[INFO] [stderr]    Compiling tokio v0.1.5
[INFO] [stderr]    Compiling syntex_pos v0.42.0
[INFO] [stderr]    Compiling csv v0.15.0
[INFO] [stderr]    Compiling tokio-core v0.1.17
[INFO] [stderr]    Compiling prettytable-rs v0.6.7
[INFO] [stderr]    Compiling syntex_errors v0.42.0
[INFO] [stderr]    Compiling syntex_syntax v0.42.0
[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/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/rustwide/target/debug/deps/rusty_netconns-c8b5abeed01bfec5.rusty_netconns.770u8dai-cgu.0.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-c8b5abeed01bfec5.rusty_netconns.770u8dai-cgu.1.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-c8b5abeed01bfec5.rusty_netconns.770u8dai-cgu.10.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-c8b5abeed01bfec5.rusty_netconns.770u8dai-cgu.11.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-c8b5abeed01bfec5.rusty_netconns.770u8dai-cgu.12.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-c8b5abeed01bfec5.rusty_netconns.770u8dai-cgu.13.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-c8b5abeed01bfec5.rusty_netconns.770u8dai-cgu.14.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-c8b5abeed01bfec5.rusty_netconns.770u8dai-cgu.15.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-c8b5abeed01bfec5.rusty_netconns.770u8dai-cgu.2.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-c8b5abeed01bfec5.rusty_netconns.770u8dai-cgu.3.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-c8b5abeed01bfec5.rusty_netconns.770u8dai-cgu.4.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-c8b5abeed01bfec5.rusty_netconns.770u8dai-cgu.5.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-c8b5abeed01bfec5.rusty_netconns.770u8dai-cgu.6.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-c8b5abeed01bfec5.rusty_netconns.770u8dai-cgu.7.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-c8b5abeed01bfec5.rusty_netconns.770u8dai-cgu.8.rcgu.o" "/opt/rustwide/target/debug/deps/rusty_netconns-c8b5abeed01bfec5.rusty_netconns.770u8dai-cgu.9.rcgu.o" "-o" "/opt/rustwide/target/debug/deps/rusty_netconns-c8b5abeed01bfec5" "/opt/rustwide/target/debug/deps/rusty_netconns-c8b5abeed01bfec5.3istboitap2ispun.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/rustwide/target/debug/deps" "-L" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/rustwide/target/debug/deps/libprettytable-6cf36bc2ecd658db.rlib" "/opt/rustwide/target/debug/deps/libencode_unicode-41a1bf498256611c.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-65d9f7d0b961f44d.rlib" "/opt/rustwide/target/debug/deps/libcsv-91bcf82359a70815.rlib" "/opt/rustwide/target/debug/deps/librustc_serialize-d833c3470fa60f44.rlib" "/opt/rustwide/target/debug/deps/libmemchr-304f383d8094343e.rlib" "/opt/rustwide/target/debug/deps/libatty-5520b7077611bf28.rlib" "/opt/rustwide/target/debug/deps/libterm-5987de33cf4cc5da.rlib" "/opt/rustwide/target/debug/deps/libunicode_width-a0e0a1b5ffc6af20.rlib" "/opt/rustwide/target/debug/deps/libpnet-99668ea389e119aa.rlib" "/opt/rustwide/target/debug/deps/libpnet_transport-c6525674462aa9b5.rlib" "/opt/rustwide/target/debug/deps/libpnet_packet-bedf028fe9697885.rlib" "/opt/rustwide/target/debug/deps/libpnet_macros_support-b1e981a6e294697e.rlib" "/opt/rustwide/target/debug/deps/libpnet_datalink-67d04f297a962dab.rlib" "/opt/rustwide/target/debug/deps/libpnet_sys-71271b8e757f5c2f.rlib" "/opt/rustwide/target/debug/deps/libpnet_base-75c6b2f9571320ff.rlib" "/opt/rustwide/target/debug/deps/libipnetwork-777834a3f7793586.rlib" "/opt/rustwide/target/debug/deps/libpcap-d270edee6f9573e7.rlib" "/opt/rustwide/target/debug/deps/libtokio_core-f7ff6c71b07770c8.rlib" "/opt/rustwide/target/debug/deps/libscoped_tls-988d48e6e5be31fd.rlib" "/opt/rustwide/target/debug/deps/libtokio-00610557422663ee.rlib" "/opt/rustwide/target/debug/deps/libtokio_udp-b2eed9ee33c9bb2d.rlib" "/opt/rustwide/target/debug/deps/libtokio_tcp-52e3481c1f00fa6e.rlib" "/opt/rustwide/target/debug/deps/libtokio_timer-eb0b3021856928ca.rlib" "/opt/rustwide/target/debug/deps/libtokio_threadpool-f8142edcf888b822.rlib" "/opt/rustwide/target/debug/deps/librand-16d6a5ab8d563466.rlib" "/opt/rustwide/target/debug/deps/libnum_cpus-b2b1450eafbe4426.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_deque-0324ae423bb78d7a.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_utils-a3782bb19612ee79.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_epoch-4921556eacf28a92.rlib" "/opt/rustwide/target/debug/deps/libscopeguard-ad4c3ad3e7604ff0.rlib" "/opt/rustwide/target/debug/deps/libmemoffset-6aac4dafce6b7963.rlib" "/opt/rustwide/target/debug/deps/liblazy_static-d8255c98acbeab1b.rlib" "/opt/rustwide/target/debug/deps/libcrossbeam_utils-db0e29bde997af27.rlib" "/opt/rustwide/target/debug/deps/libarrayvec-00e55e41342cbcb8.rlib" "/opt/rustwide/target/debug/deps/libnodrop-ed7fc3125c27ac78.rlib" "/opt/rustwide/target/debug/deps/libtokio_reactor-8dc27562b1e4fa91.rlib" "/opt/rustwide/target/debug/deps/libtokio_executor-22a21d62ab25baf3.rlib" "/opt/rustwide/target/debug/deps/libtokio_io-9182e99106716402.rlib" "/opt/rustwide/target/debug/deps/libbytes-a1eb1af6f3996d54.rlib" "/opt/rustwide/target/debug/deps/libbyteorder-f19fa76ab8655734.rlib" "/opt/rustwide/target/debug/deps/libfutures-3a369ca08fda3e7e.rlib" "/opt/rustwide/target/debug/deps/libmio-8c04f044ec5ef5cb.rlib" "/opt/rustwide/target/debug/deps/liblog-956882d223b020c3.rlib" "/opt/rustwide/target/debug/deps/libslab-e17d0e80484ab716.rlib" "/opt/rustwide/target/debug/deps/libiovec-41457af308d8182e.rlib" "/opt/rustwide/target/debug/deps/libnet2-8db0824d253c22a5.rlib" "/opt/rustwide/target/debug/deps/libcfg_if-260278bc02e35295.rlib" "/opt/rustwide/target/debug/deps/liblazycell-3cebf6533de81a6d.rlib" "/opt/rustwide/target/debug/deps/liblibc-8fa38065ad3b44d2.rlib" "-Wl,--start-group" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-5989bcf78182f65e.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-4d6da34bc177af8d.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-10e0d6c948699482.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-c2318e2415657781.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-3815b93ed84badbb.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-d7999143d95238cb.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-c58298a0d40df8b8.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-b7de97e2ba6fb4e2.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-6f71c9f654d72cce.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-95ea48ddc44a311b.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-7402cd4761aebc14.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-68f423c59dc48a40.rlib" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-54580c7798bf2225.rlib" "-Wl,--end-group" "/opt/rustwide/rustup-home/toolchains/03a1ea71b075ab964b5278bc6e74cd6c52c36ee0/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-95a4d456339b7385.rlib" "-Wl,-Bdynamic" "-lpcap" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-ldl" "-lutil"
[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" "f5fab4dfefc195fa41d4e517b4de0f49a6b109df0eedc0847c005bac5c9ceb2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5fab4dfefc195fa41d4e517b4de0f49a6b109df0eedc0847c005bac5c9ceb2e", kill_on_drop: false }`
[INFO] [stdout] f5fab4dfefc195fa41d4e517b4de0f49a6b109df0eedc0847c005bac5c9ceb2e