[INFO] updating cached repository jfornoff/rust-socket-playground
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jfornoff/rust-socket-playground
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jfornoff/rust-socket-playground" "work/ex/beta-1.38-1/sources/1.37.0/gh/jfornoff/rust-socket-playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/jfornoff/rust-socket-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jfornoff/rust-socket-playground" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jfornoff/rust-socket-playground"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jfornoff/rust-socket-playground'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 57fc4973ee37953734013b0c3e1f87c1dcc56387
[INFO] sha for GitHub repo jfornoff/rust-socket-playground: 57fc4973ee37953734013b0c3e1f87c1dcc56387
[INFO] validating manifest of jfornoff/rust-socket-playground 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 jfornoff/rust-socket-playground 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 jfornoff/rust-socket-playground
[INFO] finished frobbing jfornoff/rust-socket-playground
[INFO] frobbed toml for jfornoff/rust-socket-playground written to work/ex/beta-1.38-1/sources/1.37.0/gh/jfornoff/rust-socket-playground/Cargo.toml
[INFO] started frobbing jfornoff/rust-socket-playground
[INFO] finished frobbing jfornoff/rust-socket-playground
[INFO] frobbed toml for jfornoff/rust-socket-playground written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/jfornoff/rust-socket-playground/Cargo.toml
[INFO] crate jfornoff/rust-socket-playground 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 jfornoff/rust-socket-playground 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-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jfornoff/rust-socket-playground:/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] 902f9313562943fcfe853bd3071c61688c3cb95e5e3b31d622adc5f0df87d7a3
[INFO] running `"docker" "start" "-a" "902f9313562943fcfe853bd3071c61688c3cb95e5e3b31d622adc5f0df87d7a3"`
[INFO] [stderr]    Compiling libc v0.2.34 (https://github.com/rust-lang/libc#b080eb5c)
[INFO] [stderr]    Compiling nix v0.10.0-pre (https://github.com/jfornoff/nix.git#8441e91b)
[INFO] [stderr]    Compiling rust-socket v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `TcpListener`
[INFO] [stderr]  --> src/main.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::net::{TcpListener, TcpStream};
[INFO] [stderr]   |                ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `RawFd`
[INFO] [stderr]  --> src/main.rs:4:34
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::os::unix::io::{AsRawFd, RawFd};
[INFO] [stderr]   |                                  ^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.10s
[INFO] running `"docker" "inspect" "902f9313562943fcfe853bd3071c61688c3cb95e5e3b31d622adc5f0df87d7a3"`
[INFO] running `"docker" "rm" "-f" "902f9313562943fcfe853bd3071c61688c3cb95e5e3b31d622adc5f0df87d7a3"`
[INFO] [stdout] 902f9313562943fcfe853bd3071c61688c3cb95e5e3b31d622adc5f0df87d7a3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jfornoff/rust-socket-playground:/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] 9cbe3a94ad1a191af0661e0964c3742bac2c850df318d3470c2b142e44dc837a
[INFO] running `"docker" "start" "-a" "9cbe3a94ad1a191af0661e0964c3742bac2c850df318d3470c2b142e44dc837a"`
[INFO] [stderr]    Compiling rust-socket v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `TcpListener`
[INFO] [stderr]  --> src/main.rs:3:16
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::net::{TcpListener, TcpStream};
[INFO] [stderr]   |                ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `RawFd`
[INFO] [stderr]  --> src/main.rs:4:34
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::os::unix::io::{AsRawFd, RawFd};
[INFO] [stderr]   |                                  ^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.47s
[INFO] running `"docker" "inspect" "9cbe3a94ad1a191af0661e0964c3742bac2c850df318d3470c2b142e44dc837a"`
[INFO] running `"docker" "rm" "-f" "9cbe3a94ad1a191af0661e0964c3742bac2c850df318d3470c2b142e44dc837a"`
[INFO] [stdout] 9cbe3a94ad1a191af0661e0964c3742bac2c850df318d3470c2b142e44dc837a
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-4/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/jfornoff/rust-socket-playground:/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] 79881325be350b900c7b314123050968edb6d9a2a2af711984b8f63e2e461cdd
[INFO] running `"docker" "start" "-a" "79881325be350b900c7b314123050968edb6d9a2a2af711984b8f63e2e461cdd"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_socket-10d8722b5218051a
[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" "79881325be350b900c7b314123050968edb6d9a2a2af711984b8f63e2e461cdd"`
[INFO] running `"docker" "rm" "-f" "79881325be350b900c7b314123050968edb6d9a2a2af711984b8f63e2e461cdd"`
[INFO] [stdout] 79881325be350b900c7b314123050968edb6d9a2a2af711984b8f63e2e461cdd