[INFO] updating cached repository Hand-of-Cthulhu/UdpPacketLossTester
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Hand-of-Cthulhu/UdpPacketLossTester
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Hand-of-Cthulhu/UdpPacketLossTester" "work/ex/beta-1.37-6/sources/1.36.0/gh/Hand-of-Cthulhu/UdpPacketLossTester"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/Hand-of-Cthulhu/UdpPacketLossTester'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Hand-of-Cthulhu/UdpPacketLossTester" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Hand-of-Cthulhu/UdpPacketLossTester"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Hand-of-Cthulhu/UdpPacketLossTester'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 9dacf2f669c58cdadee2dea71cae6c381a66aeb7
[INFO] sha for GitHub repo Hand-of-Cthulhu/UdpPacketLossTester: 9dacf2f669c58cdadee2dea71cae6c381a66aeb7
[INFO] validating manifest of Hand-of-Cthulhu/UdpPacketLossTester on toolchain 1.36.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of Hand-of-Cthulhu/UdpPacketLossTester on toolchain beta-2019-07-23
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing Hand-of-Cthulhu/UdpPacketLossTester
[INFO] finished frobbing Hand-of-Cthulhu/UdpPacketLossTester
[INFO] frobbed toml for Hand-of-Cthulhu/UdpPacketLossTester written to work/ex/beta-1.37-6/sources/1.36.0/gh/Hand-of-Cthulhu/UdpPacketLossTester/Cargo.toml
[INFO] started frobbing Hand-of-Cthulhu/UdpPacketLossTester
[INFO] finished frobbing Hand-of-Cthulhu/UdpPacketLossTester
[INFO] frobbed toml for Hand-of-Cthulhu/UdpPacketLossTester written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/Hand-of-Cthulhu/UdpPacketLossTester/Cargo.toml
[INFO] crate Hand-of-Cthulhu/UdpPacketLossTester already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.36.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-07-23" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing Hand-of-Cthulhu/UdpPacketLossTester against 1.36.0 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Hand-of-Cthulhu/UdpPacketLossTester:/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" "+1.36.0" "build" "--frozen"`
[INFO] [stdout] 61605557cc082f40cd94282489ab0afb6998642a87df7bc2aa500adfaabdee2f
[INFO] running `"docker" "start" "-a" "61605557cc082f40cd94282489ab0afb6998642a87df7bc2aa500adfaabdee2f"`
[INFO] [stderr]    Compiling libc v0.2.40
[INFO] [stderr]    Compiling rand v0.4.2
[INFO] [stderr]    Compiling udp_socket v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/sender/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.94s
[INFO] running `"docker" "inspect" "61605557cc082f40cd94282489ab0afb6998642a87df7bc2aa500adfaabdee2f"`
[INFO] running `"docker" "rm" "-f" "61605557cc082f40cd94282489ab0afb6998642a87df7bc2aa500adfaabdee2f"`
[INFO] [stdout] 61605557cc082f40cd94282489ab0afb6998642a87df7bc2aa500adfaabdee2f
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Hand-of-Cthulhu/UdpPacketLossTester:/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" "+1.36.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 477ad48ea7b743d1a2600552075af6935c08e4a29d95520cd82511006a9aa720
[INFO] running `"docker" "start" "-a" "477ad48ea7b743d1a2600552075af6935c08e4a29d95520cd82511006a9aa720"`
[INFO] [stderr]    Compiling udp_socket v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `rand::Rng`
[INFO] [stderr]  --> src/sender/main.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use rand::Rng;
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `"docker" "inspect" "477ad48ea7b743d1a2600552075af6935c08e4a29d95520cd82511006a9aa720"`
[INFO] running `"docker" "rm" "-f" "477ad48ea7b743d1a2600552075af6935c08e4a29d95520cd82511006a9aa720"`
[INFO] [stdout] 477ad48ea7b743d1a2600552075af6935c08e4a29d95520cd82511006a9aa720
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-0/1.36.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/1.36.0/gh/Hand-of-Cthulhu/UdpPacketLossTester:/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" "+1.36.0" "test" "--frozen"`
[INFO] [stdout] b9f0b9ff3745d5ca5ae5057c6f85f691cf51ac287fb0d9f8678fbf10e28cb40c
[INFO] running `"docker" "start" "-a" "b9f0b9ff3745d5ca5ae5057c6f85f691cf51ac287fb0d9f8678fbf10e28cb40c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/reciever-13a3f1b6180a8cfc
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/sender-518d90389a14921b
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "b9f0b9ff3745d5ca5ae5057c6f85f691cf51ac287fb0d9f8678fbf10e28cb40c"`
[INFO] running `"docker" "rm" "-f" "b9f0b9ff3745d5ca5ae5057c6f85f691cf51ac287fb0d9f8678fbf10e28cb40c"`
[INFO] [stdout] b9f0b9ff3745d5ca5ae5057c6f85f691cf51ac287fb0d9f8678fbf10e28cb40c