[INFO] crate rumqtt 0.30.1 is already in cache
[INFO] extracting crate rumqtt 0.30.1 into work/ex/beta-1.38-1/sources/1.37.0/reg/rumqtt/0.30.1
[INFO] extracting crate rumqtt 0.30.1 into work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rumqtt/0.30.1
[INFO] validating manifest of rumqtt-0.30.1 on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of rumqtt-0.30.1 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing rumqtt-0.30.1
[INFO] finished frobbing rumqtt-0.30.1
[INFO] frobbed toml for rumqtt-0.30.1 written to work/ex/beta-1.38-1/sources/1.37.0/reg/rumqtt/0.30.1/Cargo.toml
[INFO] started frobbing rumqtt-0.30.1
[INFO] finished frobbing rumqtt-0.30.1
[INFO] frobbed toml for rumqtt-0.30.1 written to work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rumqtt/0.30.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing rumqtt-0.30.1 against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rumqtt/0.30.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] 2ee0db44f1ec1bfa8ac9b313e93d98bd3b61c0a181858b10f6b8ae43626bd3d3
[INFO] running `"docker" "start" "-a" "2ee0db44f1ec1bfa8ac9b313e93d98bd3b61c0a181858b10f6b8ae43626bd3d3"`
[INFO] [stderr]    Compiling ring v0.13.5
[INFO] [stderr]    Compiling crossbeam-channel v0.3.9
[INFO] [stderr]    Compiling uuid v0.7.4
[INFO] [stderr]    Compiling derive_more v0.13.0
[INFO] [stderr]    Compiling pretty_env_logger v0.2.5
[INFO] [stderr]    Compiling mqtt311 v0.2.0
[INFO] [stderr]    Compiling sct v0.4.0
[INFO] [stderr]    Compiling webpki v0.18.1
[INFO] [stderr]    Compiling jsonwebtoken v5.0.1
[INFO] [stderr]    Compiling rustls v0.14.0
[INFO] [stderr]    Compiling tokio-rustls v0.8.1
[INFO] [stderr]    Compiling rumqtt v0.30.1 (/opt/crater/workdir)
[INFO] [stderr] warning: the item `chrono` is imported redundantly
[INFO] [stderr]    --> src/client/mqttstate.rs:368:18
[INFO] [stderr]     |
[INFO] [stderr] 368 |     use chrono::{self, Utc};
[INFO] [stderr]     |                  ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'tokio_io::async_read::AsyncRead::framed': Use tokio_codec::Decoder::framed instead
[INFO] [stderr]    --> src/client/network.rs:148:38
[INFO] [stderr]     |
[INFO] [stderr] 148 |                     let framed = tcp.framed(codec);
[INFO] [stderr]     |                                      ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 21.60s
[INFO] running `"docker" "inspect" "2ee0db44f1ec1bfa8ac9b313e93d98bd3b61c0a181858b10f6b8ae43626bd3d3"`
[INFO] running `"docker" "rm" "-f" "2ee0db44f1ec1bfa8ac9b313e93d98bd3b61c0a181858b10f6b8ae43626bd3d3"`
[INFO] [stdout] 2ee0db44f1ec1bfa8ac9b313e93d98bd3b61c0a181858b10f6b8ae43626bd3d3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/reg/rumqtt/0.30.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 4e57b20494a8f509be9c3b8de706a164d8b64d92df24498e0ddd1f219f5ad00b
[INFO] running `"docker" "start" "-a" "4e57b20494a8f509be9c3b8de706a164d8b64d92df24498e0ddd1f219f5ad00b"`
[INFO] [stderr]    Compiling envy v0.3.3
[INFO] [stderr]    Compiling rumqtt v0.30.1 (/opt/crater/workdir)
[INFO] [stderr] error: couldn't read examples/../../certs/rsa_private.der: No such file or directory (os error 2)
[INFO] [stderr]   --> examples/gcloud.rs:27:71
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let security_options = SecurityOptions::GcloudIot(config.project, include_bytes!("../../certs/rsa_private.der").to_vec(), 60);
[INFO] [stderr]    |                                                                       ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] error: couldn't read examples/../../certs/roots.pem: No such file or directory (os error 2)
[INFO] [stderr]   --> examples/gcloud.rs:29:14
[INFO] [stderr]    |
[INFO] [stderr] 29 |     let ca = include_bytes!("../../certs/roots.pem").to_vec();
[INFO] [stderr]    |              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `broker`
[INFO] [stderr]  --> examples/pubsub1.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let broker = "prod-mqtt-broker.atherengineering.in";
[INFO] [stderr]   |         ^^^^^^ help: consider prefixing with an underscore: `_broker`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `MqttClient`, `MqttOptions`
[INFO] [stderr]  --> examples/reconnection.rs:3:14
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rumqtt::{MqttClient, MqttOptions};
[INFO] [stderr]   |              ^^^^^^^^^^  ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::thread`
[INFO] [stderr]  --> examples/reconnection.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::thread;
[INFO] [stderr]   |     ^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: the item `chrono` is imported redundantly
[INFO] [stderr]    --> src/client/mqttstate.rs:368:18
[INFO] [stderr]     |
[INFO] [stderr] 368 |     use chrono::{self, Utc};
[INFO] [stderr]     |                  ^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to 2 previous errors
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rumqtt`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: use of deprecated item 'tokio_io::async_read::AsyncRead::framed': Use tokio_codec::Decoder::framed instead
[INFO] [stderr]    --> src/client/network.rs:148:38
[INFO] [stderr]     |
[INFO] [stderr] 148 |                     let framed = tcp.framed(codec);
[INFO] [stderr]     |                                      ^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] error: linking with `cc` failed: exit code: 1
[INFO] [stderr]   |
[INFO] [stderr]   = note: "cc" "-Wl,--as-needed" "-Wl,-z,noexecstack" "-m64" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "/opt/crater/target/debug/deps/rumqtt-f4028d5cddb54840.rumqtt.20z2hc95-cgu.0.rcgu.o" "/opt/crater/target/debug/deps/rumqtt-f4028d5cddb54840.rumqtt.20z2hc95-cgu.1.rcgu.o" "/opt/crater/target/debug/deps/rumqtt-f4028d5cddb54840.rumqtt.20z2hc95-cgu.10.rcgu.o" "/opt/crater/target/debug/deps/rumqtt-f4028d5cddb54840.rumqtt.20z2hc95-cgu.11.rcgu.o" "/opt/crater/target/debug/deps/rumqtt-f4028d5cddb54840.rumqtt.20z2hc95-cgu.12.rcgu.o" "/opt/crater/target/debug/deps/rumqtt-f4028d5cddb54840.rumqtt.20z2hc95-cgu.13.rcgu.o" "/opt/crater/target/debug/deps/rumqtt-f4028d5cddb54840.rumqtt.20z2hc95-cgu.14.rcgu.o" "/opt/crater/target/debug/deps/rumqtt-f4028d5cddb54840.rumqtt.20z2hc95-cgu.15.rcgu.o" "/opt/crater/target/debug/deps/rumqtt-f4028d5cddb54840.rumqtt.20z2hc95-cgu.2.rcgu.o" "/opt/crater/target/debug/deps/rumqtt-f4028d5cddb54840.rumqtt.20z2hc95-cgu.3.rcgu.o" "/opt/crater/target/debug/deps/rumqtt-f4028d5cddb54840.rumqtt.20z2hc95-cgu.4.rcgu.o" "/opt/crater/target/debug/deps/rumqtt-f4028d5cddb54840.rumqtt.20z2hc95-cgu.5.rcgu.o" "/opt/crater/target/debug/deps/rumqtt-f4028d5cddb54840.rumqtt.20z2hc95-cgu.6.rcgu.o" "/opt/crater/target/debug/deps/rumqtt-f4028d5cddb54840.rumqtt.20z2hc95-cgu.7.rcgu.o" "/opt/crater/target/debug/deps/rumqtt-f4028d5cddb54840.rumqtt.20z2hc95-cgu.8.rcgu.o" "/opt/crater/target/debug/deps/rumqtt-f4028d5cddb54840.rumqtt.20z2hc95-cgu.9.rcgu.o" "-o" "/opt/crater/target/debug/deps/rumqtt-f4028d5cddb54840" "/opt/crater/target/debug/deps/rumqtt-f4028d5cddb54840.3vc8jsrcrf1w4y7u.rcgu.o" "-Wl,--gc-sections" "-pie" "-Wl,-zrelro" "-Wl,-znow" "-nodefaultlibs" "-L" "/opt/crater/target/debug/deps" "-L" "/opt/crater/target/debug/build/backtrace-sys-d5ae900bfde9750d/out" "-L" "/opt/crater/target/debug/build/ring-bbdf37148732ad73/out" "-L" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib" "-Wl,-Bstatic" "/opt/crater/target/debug/deps/libbase64-ecbe49359e7e13a6.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libtest-f0d86b2ef6410e4f.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libterm-28a84d78fba0104f.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libgetopts-625008d0a6744ece.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunicode_width-b85c11af396739da.rlib" "/opt/crater/target/debug/deps/libuuid-3484cb86067af91b.rlib" "/opt/crater/target/debug/deps/libtokio_rustls-e8cc7fc1b73b9962.rlib" "/opt/crater/target/debug/deps/librustls-e839262e97672d1f.rlib" "/opt/crater/target/debug/deps/libsct-ea4a7ad83d4c9cb9.rlib" "/opt/crater/target/debug/deps/libwebpki-aa45b310d0980c9a.rlib" "/opt/crater/target/debug/deps/libjsonwebtoken-77c93fd8d408104a.rlib" "/opt/crater/target/debug/deps/libring-0cccef28227a0deb.rlib" "/opt/crater/target/debug/deps/libuntrusted-5376089619eed254.rlib" "/opt/crater/target/debug/deps/libbase64-cc637031afaea5c5.rlib" "/opt/crater/target/debug/deps/libsafemem-a19c8ef0327c60ac.rlib" "/opt/crater/target/debug/deps/libserde_json-0c53888b338bdcbb.rlib" "/opt/crater/target/debug/deps/libryu-a9583eff3872e809.rlib" "/opt/crater/target/debug/deps/libitoa-fbd08118d5c2ed14.rlib" "/opt/crater/target/debug/deps/libserde-5125a48878b1da57.rlib" "/opt/crater/target/debug/deps/libchrono-6d874ac3fbc64c03.rlib" "/opt/crater/target/debug/deps/libnum_integer-f48a816a5a5da78f.rlib" "/opt/crater/target/debug/deps/libnum_traits-81444709e4b8de32.rlib" "/opt/crater/target/debug/deps/libtime-c375bf02baafb2fd.rlib" "/opt/crater/target/debug/deps/libtokio-241773387278fbde.rlib" "/opt/crater/target/debug/deps/libtokio_uds-28aa52c0d2ecdc57.rlib" "/opt/crater/target/debug/deps/libmio_uds-b1d44c3a55c7b107.rlib" "/opt/crater/target/debug/deps/libtokio_udp-3493e22769a7645e.rlib" "/opt/crater/target/debug/deps/libtokio_timer-c6e40c97d9def47d.rlib" "/opt/crater/target/debug/deps/libtokio_tcp-5a21d8b587de7d90.rlib" "/opt/crater/target/debug/deps/libtokio_reactor-dc2897a641e6f9f9.rlib" "/opt/crater/target/debug/deps/libtokio_sync-e9d8e5fe6c538a0e.rlib" "/opt/crater/target/debug/deps/libfnv-6e18f98be4338210.rlib" "/opt/crater/target/debug/deps/libparking_lot-6d6274efc8401f80.rlib" "/opt/crater/target/debug/deps/libparking_lot_core-869ed462af3e9515.rlib" "/opt/crater/target/debug/deps/libsmallvec-7295b1a781bd56b7.rlib" "/opt/crater/target/debug/deps/liblock_api-fc146aa09c055915.rlib" "/opt/crater/target/debug/deps/libowning_ref-3fc2847bd21aa6e0.rlib" "/opt/crater/target/debug/deps/libstable_deref_trait-0255958156eadff4.rlib" "/opt/crater/target/debug/deps/libscopeguard-22a7afc64d55fe2c.rlib" "/opt/crater/target/debug/deps/libtokio_fs-e1502f8d9eae2cc9.rlib" "/opt/crater/target/debug/deps/libtokio_threadpool-b056b92c7aa26aea.rlib" "/opt/crater/target/debug/deps/librand-0a4630b57dcc57b3.rlib" "/opt/crater/target/debug/deps/librand_xorshift-aba648178ccafa60.rlib" "/opt/crater/target/debug/deps/librand_pcg-ed671db4fe3757e2.rlib" "/opt/crater/target/debug/deps/librand_hc-9a65771b9d152351.rlib" "/opt/crater/target/debug/deps/librand_chacha-1b9e58560472e74b.rlib" "/opt/crater/target/debug/deps/librand_isaac-3807d01c3a327700.rlib" "/opt/crater/target/debug/deps/librand_core-4eee27b20de9a341.rlib" "/opt/crater/target/debug/deps/librand_os-4634e01c13ceff4d.rlib" "/opt/crater/target/debug/deps/librand_jitter-a13c2857ac7f2734.rlib" "/opt/crater/target/debug/deps/librand_core-a5a514f3409fd81c.rlib" "/opt/crater/target/debug/deps/libcrossbeam_queue-2589c79105784e0d.rlib" "/opt/crater/target/debug/deps/libcrossbeam_deque-5a68c737302d997f.rlib" "/opt/crater/target/debug/deps/libcrossbeam_epoch-8ce32638c5f827b5.rlib" "/opt/crater/target/debug/deps/libscopeguard-0bc963131f7c0d17.rlib" "/opt/crater/target/debug/deps/libmemoffset-d44318d335d18b97.rlib" "/opt/crater/target/debug/deps/libarrayvec-1cff3f0e2df954b3.rlib" "/opt/crater/target/debug/deps/libnodrop-7f98e5f8ec110eeb.rlib" "/opt/crater/target/debug/deps/libtokio_current_thread-747363cf0ed087f7.rlib" "/opt/crater/target/debug/deps/libtokio_executor-bdf861f407e5fa85.rlib" "/opt/crater/target/debug/deps/libtokio_codec-f600767da57615b5.rlib" "/opt/crater/target/debug/deps/libtokio_io-cf9e939a0533315f.rlib" "/opt/crater/target/debug/deps/libnum_cpus-b569161181e0c021.rlib" "/opt/crater/target/debug/deps/libmio-abd445e00221b11c.rlib" "/opt/crater/target/debug/deps/libslab-9297145f06665f9b.rlib" "/opt/crater/target/debug/deps/libnet2-bb453ffc26c3f792.rlib" "/opt/crater/target/debug/deps/libbytes-ed85d24d60fcc292.rlib" "/opt/crater/target/debug/deps/libiovec-700e4a654a679356.rlib" "/opt/crater/target/debug/deps/libmqtt311-b653c77045088753.rlib" "/opt/crater/target/debug/deps/libfailure-e533f5339fa6fa33.rlib" "/opt/crater/target/debug/deps/libbacktrace-0ba24489b33d7a88.rlib" "/opt/crater/target/debug/deps/libbacktrace_sys-4ba3fb5c8a305755.rlib" "/opt/crater/target/debug/deps/liblibc-37f3d1c853b3b7bd.rlib" "/opt/crater/target/debug/deps/librustc_demangle-93c44a61a479f45e.rlib" "/opt/crater/target/debug/deps/libbyteorder-98f71e4258b709b0.rlib" "/opt/crater/target/debug/deps/libfutures-f60afb80ba7dd5f9.rlib" "/opt/crater/target/debug/deps/libcrossbeam_channel-d970ccf301adf1a2.rlib" "/opt/crater/target/debug/deps/libcrossbeam_utils-e32b73b6a212c837.rlib" "/opt/crater/target/debug/deps/liblazy_static-1f7a4359e40a6da9.rlib" "/opt/crater/target/debug/deps/liblog-6796845c78a3960b.rlib" "/opt/crater/target/debug/deps/libcfg_if-c978b2f886ff1de7.rlib" "-Wl,--start-group" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libstd-1d6d86bd078a28e9.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libpanic_unwind-e9721e46a424e2a9.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace-c07193698f282147.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libbacktrace_sys-6da45690f3863086.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_demangle-690797036dd27680.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libhashbrown-d3896ccbfd8eda2b.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_alloc-7cccc3739e3d7623.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libunwind-5e9ba178a513cd29.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcfg_if-5ca9f83bf63d1f4b.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liblibc-bba1c7ef9e950882.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/liballoc-e23c9de62012deb5.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/librustc_std_workspace_core-9b59dffdcd513d5d.rlib" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcore-17392340ab2e4a97.rlib" "-Wl,--end-group" "/opt/crater/rustup-home/toolchains/beta-2019-08-13-x86_64-unknown-linux-gnu/lib/rustlib/x86_64-unknown-linux-gnu/lib/libcompiler_builtins-ac21508a81e3f7f3.rlib" "-Wl,-Bdynamic" "-lutil" "-lutil" "-ldl" "-lrt" "-lpthread" "-lgcc_s" "-lc" "-lm" "-lrt" "-lpthread" "-lutil" "-lutil"
[INFO] [stderr]   = note: collect2: error: ld returned 1 exit status
[INFO] [stderr]           
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `rumqtt`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `"docker" "inspect" "4e57b20494a8f509be9c3b8de706a164d8b64d92df24498e0ddd1f219f5ad00b"`
[INFO] running `"docker" "rm" "-f" "4e57b20494a8f509be9c3b8de706a164d8b64d92df24498e0ddd1f219f5ad00b"`
[INFO] [stdout] 4e57b20494a8f509be9c3b8de706a164d8b64d92df24498e0ddd1f219f5ad00b