[INFO] updating cached repository wmiller848/rust_tcp
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/wmiller848/rust_tcp
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/wmiller848/rust_tcp" "work/ex/beta-1.38-1/sources/1.37.0/gh/wmiller848/rust_tcp"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/wmiller848/rust_tcp'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/wmiller848/rust_tcp" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wmiller848/rust_tcp"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wmiller848/rust_tcp'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] cb4f5dd8e48ac806da9db21361625a43dfb6c785
[INFO] sha for GitHub repo wmiller848/rust_tcp: cb4f5dd8e48ac806da9db21361625a43dfb6c785
[INFO] validating manifest of wmiller848/rust_tcp 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 wmiller848/rust_tcp 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 wmiller848/rust_tcp
[INFO] finished frobbing wmiller848/rust_tcp
[INFO] frobbed toml for wmiller848/rust_tcp written to work/ex/beta-1.38-1/sources/1.37.0/gh/wmiller848/rust_tcp/Cargo.toml
[INFO] started frobbing wmiller848/rust_tcp
[INFO] finished frobbing wmiller848/rust_tcp
[INFO] frobbed toml for wmiller848/rust_tcp written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/wmiller848/rust_tcp/Cargo.toml
[INFO] crate wmiller848/rust_tcp 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] error: the lock file /mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/wmiller848/rust_tcp/Cargo.lock needs to be updated but --locked was passed to prevent this
[INFO] the lockfile is outdated, regenerating it
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[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 wmiller848/rust_tcp 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/wmiller848/rust_tcp:/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] 09d04cbc88d5560cef75f120e5f50a444399f9723a80729a49f29ac4bfecfa64
[INFO] running `"docker" "start" "-a" "09d04cbc88d5560cef75f120e5f50a444399f9723a80729a49f29ac4bfecfa64"`
[INFO] [stderr]    Compiling byteorder v0.3.13
[INFO] [stderr]    Compiling bincode v0.3.0
[INFO] [stderr]    Compiling rust_tcp v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Decodable`, `Encodable`
[INFO] [stderr]  --> src/main.rs:2:23
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rustc_serialize::{Decodable, Encodable, json};
[INFO] [stderr]   |                       ^^^^^^^^^  ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.52s
[INFO] running `"docker" "inspect" "09d04cbc88d5560cef75f120e5f50a444399f9723a80729a49f29ac4bfecfa64"`
[INFO] running `"docker" "rm" "-f" "09d04cbc88d5560cef75f120e5f50a444399f9723a80729a49f29ac4bfecfa64"`
[INFO] [stdout] 09d04cbc88d5560cef75f120e5f50a444399f9723a80729a49f29ac4bfecfa64
[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/wmiller848/rust_tcp:/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] 231a8c4bf78179b3a55ae4a4846effd9096a45e7a63bc44de31e67e541092210
[INFO] running `"docker" "start" "-a" "231a8c4bf78179b3a55ae4a4846effd9096a45e7a63bc44de31e67e541092210"`
[INFO] [stderr]    Compiling rust_tcp v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Decodable`, `Encodable`
[INFO] [stderr]  --> src/main.rs:2:23
[INFO] [stderr]   |
[INFO] [stderr] 2 | use rustc_serialize::{Decodable, Encodable, json};
[INFO] [stderr]   |                       ^^^^^^^^^  ^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.63s
[INFO] running `"docker" "inspect" "231a8c4bf78179b3a55ae4a4846effd9096a45e7a63bc44de31e67e541092210"`
[INFO] running `"docker" "rm" "-f" "231a8c4bf78179b3a55ae4a4846effd9096a45e7a63bc44de31e67e541092210"`
[INFO] [stdout] 231a8c4bf78179b3a55ae4a4846effd9096a45e7a63bc44de31e67e541092210
[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/wmiller848/rust_tcp:/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] 98ca2b6071955f87cf13f56ff00835e4f6749ef50e0a8f6462a942c18cb6e409
[INFO] running `"docker" "start" "-a" "98ca2b6071955f87cf13f56ff00835e4f6749ef50e0a8f6462a942c18cb6e409"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rust_tcp-4fdcb85484a58f80
[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" "98ca2b6071955f87cf13f56ff00835e4f6749ef50e0a8f6462a942c18cb6e409"`
[INFO] running `"docker" "rm" "-f" "98ca2b6071955f87cf13f56ff00835e4f6749ef50e0a8f6462a942c18cb6e409"`
[INFO] [stdout] 98ca2b6071955f87cf13f56ff00835e4f6749ef50e0a8f6462a942c18cb6e409