[INFO] updating cached repository infinitete/udp-server-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/infinitete/udp-server-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/infinitete/udp-server-rust" "work/ex/beta-1.37-6/sources/1.36.0/gh/infinitete/udp-server-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/infinitete/udp-server-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/infinitete/udp-server-rust" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/infinitete/udp-server-rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/infinitete/udp-server-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 97002fabb06755a967c3a15359e7c6d0b01f22c5
[INFO] sha for GitHub repo infinitete/udp-server-rust: 97002fabb06755a967c3a15359e7c6d0b01f22c5
[INFO] validating manifest of infinitete/udp-server-rust 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 infinitete/udp-server-rust 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 infinitete/udp-server-rust
[INFO] finished frobbing infinitete/udp-server-rust
[INFO] frobbed toml for infinitete/udp-server-rust written to work/ex/beta-1.37-6/sources/1.36.0/gh/infinitete/udp-server-rust/Cargo.toml
[INFO] started frobbing infinitete/udp-server-rust
[INFO] finished frobbing infinitete/udp-server-rust
[INFO] frobbed toml for infinitete/udp-server-rust written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/infinitete/udp-server-rust/Cargo.toml
[INFO] crate infinitete/udp-server-rust 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] testing infinitete/udp-server-rust against beta-2019-07-23 for beta-1.37-6
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/infinitete/udp-server-rust:/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-2019-07-23" "build" "--frozen"`
[INFO] [stdout] 3f970f0f2b1167f0c1e6815f1e940aed196b2d397ac4228960b91e7d74353e90
[INFO] running `"docker" "start" "-a" "3f970f0f2b1167f0c1e6815f1e940aed196b2d397ac4228960b91e7d74353e90"`
[INFO] [stderr]    Compiling udp-server v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `last_buff` is never read
[INFO] [stderr]   --> src/server/mod.rs:10:13
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let mut last_buff = [0;32];
[INFO] [stderr]    |             ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
[INFO] running `"docker" "inspect" "3f970f0f2b1167f0c1e6815f1e940aed196b2d397ac4228960b91e7d74353e90"`
[INFO] running `"docker" "rm" "-f" "3f970f0f2b1167f0c1e6815f1e940aed196b2d397ac4228960b91e7d74353e90"`
[INFO] [stdout] 3f970f0f2b1167f0c1e6815f1e940aed196b2d397ac4228960b91e7d74353e90
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/infinitete/udp-server-rust:/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-2019-07-23" "test" "--frozen" "--no-run"`
[INFO] [stdout] 17984b77a4665312448aa2792ebc8d5dbe7937613a628041a312d4f7b062dd1e
[INFO] running `"docker" "start" "-a" "17984b77a4665312448aa2792ebc8d5dbe7937613a628041a312d4f7b062dd1e"`
[INFO] [stderr]    Compiling udp-server v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: value assigned to `last_buff` is never read
[INFO] [stderr]   --> src/server/mod.rs:10:13
[INFO] [stderr]    |
[INFO] [stderr] 10 |     let mut last_buff = [0;32];
[INFO] [stderr]    |             ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_assignments)] on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `"docker" "inspect" "17984b77a4665312448aa2792ebc8d5dbe7937613a628041a312d4f7b062dd1e"`
[INFO] running `"docker" "rm" "-f" "17984b77a4665312448aa2792ebc8d5dbe7937613a628041a312d4f7b062dd1e"`
[INFO] [stdout] 17984b77a4665312448aa2792ebc8d5dbe7937613a628041a312d4f7b062dd1e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-4/beta-2019-07-23:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/infinitete/udp-server-rust:/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-2019-07-23" "test" "--frozen"`
[INFO] [stdout] b8a1589270427093937015d578af1b094acd22d1c038d5a4c89a0d0fdd8cd86c
[INFO] running `"docker" "start" "-a" "b8a1589270427093937015d578af1b094acd22d1c038d5a4c89a0d0fdd8cd86c"`
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stdout] running 0 tests
[INFO] [stderr]      Running /opt/crater/target/debug/deps/udp_server-dfe8e8a3ab7afa29
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/udp_server-c01a7aa1282d2abe
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stderr]    Doc-tests udp-server
[INFO] [stdout] 
[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] [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" "b8a1589270427093937015d578af1b094acd22d1c038d5a4c89a0d0fdd8cd86c"`
[INFO] running `"docker" "rm" "-f" "b8a1589270427093937015d578af1b094acd22d1c038d5a4c89a0d0fdd8cd86c"`
[INFO] [stdout] b8a1589270427093937015d578af1b094acd22d1c038d5a4c89a0d0fdd8cd86c