[INFO] updating cached repository domsj/rust-sd
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/domsj/rust-sd
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/domsj/rust-sd" "work/ex/beta-1.38-1/sources/1.37.0/gh/domsj/rust-sd"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/domsj/rust-sd'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/domsj/rust-sd" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/domsj/rust-sd"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/domsj/rust-sd'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 756a9ebeb6ab0ce986538fe45cc345d8383220ac
[INFO] sha for GitHub repo domsj/rust-sd: 756a9ebeb6ab0ce986538fe45cc345d8383220ac
[INFO] validating manifest of domsj/rust-sd 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 domsj/rust-sd 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 domsj/rust-sd
[INFO] finished frobbing domsj/rust-sd
[INFO] frobbed toml for domsj/rust-sd written to work/ex/beta-1.38-1/sources/1.37.0/gh/domsj/rust-sd/Cargo.toml
[INFO] started frobbing domsj/rust-sd
[INFO] finished frobbing domsj/rust-sd
[INFO] frobbed toml for domsj/rust-sd written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/domsj/rust-sd/Cargo.toml
[INFO] crate domsj/rust-sd already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing domsj/rust-sd 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-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/domsj/rust-sd:/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] 71faef3692b8091ccbec2c757d32f10c9451895db4fbb1e88814b3413ceb7770
[INFO] running `"docker" "start" "-a" "71faef3692b8091ccbec2c757d32f10c9451895db4fbb1e88814b3413ceb7770"`
[INFO] [stderr]    Compiling serde_json v1.0.7
[INFO] [stderr]    Compiling nix v0.9.0
[INFO] [stderr]    Compiling serde_derive_internals v0.17.0
[INFO] [stderr]    Compiling tokio-proto v0.1.1
[INFO] [stderr]    Compiling serde_derive v1.0.23
[INFO] [stderr]    Compiling rust_sd v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `tcp_stream`
[INFO] [stderr]    --> src/main.rs:155:25
[INFO] [stderr]     |
[INFO] [stderr] 155 |                     let tcp_stream =
[INFO] [stderr]     |                         ^^^^^^^^^^ help: consider prefixing with an underscore: `_tcp_stream`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MessageCodec`
[INFO] [stderr]   --> src/main.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     struct MessageCodec;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 19.48s
[INFO] running `"docker" "inspect" "71faef3692b8091ccbec2c757d32f10c9451895db4fbb1e88814b3413ceb7770"`
[INFO] running `"docker" "rm" "-f" "71faef3692b8091ccbec2c757d32f10c9451895db4fbb1e88814b3413ceb7770"`
[INFO] [stdout] 71faef3692b8091ccbec2c757d32f10c9451895db4fbb1e88814b3413ceb7770
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/domsj/rust-sd:/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] 054971d8a568e806e2c644e98529de997d5519e7bc5f7ab946aecb7bb388b821
[INFO] running `"docker" "start" "-a" "054971d8a568e806e2c644e98529de997d5519e7bc5f7ab946aecb7bb388b821"`
[INFO] [stderr]    Compiling rust_sd v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `tcp_stream`
[INFO] [stderr]    --> src/main.rs:155:25
[INFO] [stderr]     |
[INFO] [stderr] 155 |                     let tcp_stream =
[INFO] [stderr]     |                         ^^^^^^^^^^ help: consider prefixing with an underscore: `_tcp_stream`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `MessageCodec`
[INFO] [stderr]   --> src/main.rs:72:5
[INFO] [stderr]    |
[INFO] [stderr] 72 |     struct MessageCodec;
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.62s
[INFO] running `"docker" "inspect" "054971d8a568e806e2c644e98529de997d5519e7bc5f7ab946aecb7bb388b821"`
[INFO] running `"docker" "rm" "-f" "054971d8a568e806e2c644e98529de997d5519e7bc5f7ab946aecb7bb388b821"`
[INFO] [stdout] 054971d8a568e806e2c644e98529de997d5519e7bc5f7ab946aecb7bb388b821
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/domsj/rust-sd:/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"`
[INFO] [stdout] bb585d65a67da43871c411f236985bad2ae711f23af4261ce7b4ab32f55001e6
[INFO] running `"docker" "start" "-a" "bb585d65a67da43871c411f236985bad2ae711f23af4261ce7b4ab32f55001e6"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.08s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_sd-70f6643012ca5a66
[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" "bb585d65a67da43871c411f236985bad2ae711f23af4261ce7b4ab32f55001e6"`
[INFO] running `"docker" "rm" "-f" "bb585d65a67da43871c411f236985bad2ae711f23af4261ce7b4ab32f55001e6"`
[INFO] [stdout] bb585d65a67da43871c411f236985bad2ae711f23af4261ce7b4ab32f55001e6