[INFO] updating cached repository AliSchlereth/bad_connection_rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/AliSchlereth/bad_connection_rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/AliSchlereth/bad_connection_rust" "work/ex/beta-1.37-6/sources/1.36.0/gh/AliSchlereth/bad_connection_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/AliSchlereth/bad_connection_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/AliSchlereth/bad_connection_rust" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/AliSchlereth/bad_connection_rust"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/AliSchlereth/bad_connection_rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 8920da136621e84fa52169ff120b97cf529e5dec
[INFO] sha for GitHub repo AliSchlereth/bad_connection_rust: 8920da136621e84fa52169ff120b97cf529e5dec
[INFO] validating manifest of AliSchlereth/bad_connection_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 AliSchlereth/bad_connection_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 AliSchlereth/bad_connection_rust
[INFO] finished frobbing AliSchlereth/bad_connection_rust
[INFO] frobbed toml for AliSchlereth/bad_connection_rust written to work/ex/beta-1.37-6/sources/1.36.0/gh/AliSchlereth/bad_connection_rust/Cargo.toml
[INFO] started frobbing AliSchlereth/bad_connection_rust
[INFO] finished frobbing AliSchlereth/bad_connection_rust
[INFO] frobbed toml for AliSchlereth/bad_connection_rust written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/AliSchlereth/bad_connection_rust/Cargo.toml
[INFO] crate AliSchlereth/bad_connection_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] testing AliSchlereth/bad_connection_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-2/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/AliSchlereth/bad_connection_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] 53fbd565a114ce303b6a703a5e9e1065527bf824c9a1de4798105211a86a1117
[INFO] running `"docker" "start" "-a" "53fbd565a114ce303b6a703a5e9e1065527bf824c9a1de4798105211a86a1117"`
[INFO] [stderr]    Compiling bad_connection v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut listening = true;
[INFO] [stderr]   |         ----^^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `"docker" "inspect" "53fbd565a114ce303b6a703a5e9e1065527bf824c9a1de4798105211a86a1117"`
[INFO] running `"docker" "rm" "-f" "53fbd565a114ce303b6a703a5e9e1065527bf824c9a1de4798105211a86a1117"`
[INFO] [stdout] 53fbd565a114ce303b6a703a5e9e1065527bf824c9a1de4798105211a86a1117
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/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/AliSchlereth/bad_connection_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] 95e4777e6007cd72da0541bb9fddb25e4984a74d67cb7a51cdf67cb247547c3e
[INFO] running `"docker" "start" "-a" "95e4777e6007cd72da0541bb9fddb25e4984a74d67cb7a51cdf67cb247547c3e"`
[INFO] [stderr]    Compiling bad_connection v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]  --> src/main.rs:6:9
[INFO] [stderr]   |
[INFO] [stderr] 6 |     let mut listening = true;
[INFO] [stderr]   |         ----^^^^^^^^^
[INFO] [stderr]   |         |
[INFO] [stderr]   |         help: remove this `mut`
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
[INFO] running `"docker" "inspect" "95e4777e6007cd72da0541bb9fddb25e4984a74d67cb7a51cdf67cb247547c3e"`
[INFO] running `"docker" "rm" "-f" "95e4777e6007cd72da0541bb9fddb25e4984a74d67cb7a51cdf67cb247547c3e"`
[INFO] [stdout] 95e4777e6007cd72da0541bb9fddb25e4984a74d67cb7a51cdf67cb247547c3e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.37-6/worker-2/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/AliSchlereth/bad_connection_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] b3496b686440c2b618a80686c38d893cee96ace3363a1e493ee6e1823bbfa8af
[INFO] running `"docker" "start" "-a" "b3496b686440c2b618a80686c38d893cee96ace3363a1e493ee6e1823bbfa8af"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.00s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/bad_connection-64d007200d33e145
[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" "b3496b686440c2b618a80686c38d893cee96ace3363a1e493ee6e1823bbfa8af"`
[INFO] running `"docker" "rm" "-f" "b3496b686440c2b618a80686c38d893cee96ace3363a1e493ee6e1823bbfa8af"`
[INFO] [stdout] b3496b686440c2b618a80686c38d893cee96ace3363a1e493ee6e1823bbfa8af