[INFO] updating cached repository tgeery/RustTcpClient
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/tgeery/RustTcpClient
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/tgeery/RustTcpClient" "work/ex/beta-1.38-1/sources/1.37.0/gh/tgeery/RustTcpClient"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/tgeery/RustTcpClient'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/tgeery/RustTcpClient" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tgeery/RustTcpClient"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tgeery/RustTcpClient'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a07bdb8798cfdcd6d1ccb9e64c334a0f0487cafa
[INFO] sha for GitHub repo tgeery/RustTcpClient: a07bdb8798cfdcd6d1ccb9e64c334a0f0487cafa
[INFO] validating manifest of tgeery/RustTcpClient 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 tgeery/RustTcpClient 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 tgeery/RustTcpClient
[INFO] finished frobbing tgeery/RustTcpClient
[INFO] frobbed toml for tgeery/RustTcpClient written to work/ex/beta-1.38-1/sources/1.37.0/gh/tgeery/RustTcpClient/Cargo.toml
[INFO] started frobbing tgeery/RustTcpClient
[INFO] finished frobbing tgeery/RustTcpClient
[INFO] frobbed toml for tgeery/RustTcpClient written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/tgeery/RustTcpClient/Cargo.toml
[INFO] crate tgeery/RustTcpClient 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing tgeery/RustTcpClient against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/tgeery/RustTcpClient:/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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] bc581aaa16f9229df604fcce37d3f66a0ce120b4215da16ece8e0e49d285843d
[INFO] running `"docker" "start" "-a" "bc581aaa16f9229df604fcce37d3f66a0ce120b4215da16ece8e0e49d285843d"`
[INFO] [stderr]    Compiling TcpClient v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::Write;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `TcpClient` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `tcp_client`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.89s
[INFO] running `"docker" "inspect" "bc581aaa16f9229df604fcce37d3f66a0ce120b4215da16ece8e0e49d285843d"`
[INFO] running `"docker" "rm" "-f" "bc581aaa16f9229df604fcce37d3f66a0ce120b4215da16ece8e0e49d285843d"`
[INFO] [stdout] bc581aaa16f9229df604fcce37d3f66a0ce120b4215da16ece8e0e49d285843d
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/tgeery/RustTcpClient:/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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] b5cee199d93396ae0fa7582602462737ca5e70d3dc7b04beefd131a82bd56583
[INFO] running `"docker" "start" "-a" "b5cee199d93396ae0fa7582602462737ca5e70d3dc7b04beefd131a82bd56583"`
[INFO] [stderr]    Compiling TcpClient v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::io::Write`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::Write;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: crate `TcpClient` should have a snake case name
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(non_snake_case)] on by default
[INFO] [stderr]   = help: convert the identifier to snake case: `tcp_client`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `"docker" "inspect" "b5cee199d93396ae0fa7582602462737ca5e70d3dc7b04beefd131a82bd56583"`
[INFO] running `"docker" "rm" "-f" "b5cee199d93396ae0fa7582602462737ca5e70d3dc7b04beefd131a82bd56583"`
[INFO] [stdout] b5cee199d93396ae0fa7582602462737ca5e70d3dc7b04beefd131a82bd56583
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-0/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/tgeery/RustTcpClient:/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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] 2b54438033b8e1f8a22f99bd069509c75dcd29165121b927ed9a648d2eaa250c
[INFO] running `"docker" "start" "-a" "2b54438033b8e1f8a22f99bd069509c75dcd29165121b927ed9a648d2eaa250c"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[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/TcpClient-bcf7deebc797f310
[INFO] running `"docker" "inspect" "2b54438033b8e1f8a22f99bd069509c75dcd29165121b927ed9a648d2eaa250c"`
[INFO] running `"docker" "rm" "-f" "2b54438033b8e1f8a22f99bd069509c75dcd29165121b927ed9a648d2eaa250c"`
[INFO] [stdout] 2b54438033b8e1f8a22f99bd069509c75dcd29165121b927ed9a648d2eaa250c