[INFO] updating cached repository saem/rncc
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/saem/rncc
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/saem/rncc" "work/ex/beta-1.37-6/sources/1.36.0/gh/saem/rncc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/1.36.0/gh/saem/rncc'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/saem/rncc" "work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/saem/rncc"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/saem/rncc'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d2e8b0baa55d73594b8063d64bed23bfb0fe23ad
[INFO] sha for GitHub repo saem/rncc: d2e8b0baa55d73594b8063d64bed23bfb0fe23ad
[INFO] validating manifest of saem/rncc 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 saem/rncc 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 saem/rncc
[INFO] finished frobbing saem/rncc
[INFO] frobbed toml for saem/rncc written to work/ex/beta-1.37-6/sources/1.36.0/gh/saem/rncc/Cargo.toml
[INFO] started frobbing saem/rncc
[INFO] finished frobbing saem/rncc
[INFO] frobbed toml for saem/rncc written to work/ex/beta-1.37-6/sources/beta-2019-07-23/gh/saem/rncc/Cargo.toml
[INFO] crate saem/rncc 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 saem/rncc 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/saem/rncc:/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] ff1d16ea1b7f9cbbe505e34fef786afe4a708a0d6b225b542a00e6971776f625
[INFO] running `"docker" "start" "-a" "ff1d16ea1b7f9cbbe505e34fef786afe4a708a0d6b225b542a00e6971776f625"`
[INFO] [stderr]    Compiling rncc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: enum is never used: `Operation`
[INFO] [stderr]   --> src/network.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | enum Operation {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.98s
[INFO] running `"docker" "inspect" "ff1d16ea1b7f9cbbe505e34fef786afe4a708a0d6b225b542a00e6971776f625"`
[INFO] running `"docker" "rm" "-f" "ff1d16ea1b7f9cbbe505e34fef786afe4a708a0d6b225b542a00e6971776f625"`
[INFO] [stdout] ff1d16ea1b7f9cbbe505e34fef786afe4a708a0d6b225b542a00e6971776f625
[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/saem/rncc:/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] 7201f63178ca604a1572e9a6f42f6fe4e9f4919318503e5ef1b0041233f71e0e
[INFO] running `"docker" "start" "-a" "7201f63178ca604a1572e9a6f42f6fe4e9f4919318503e5ef1b0041233f71e0e"`
[INFO] [stderr]    Compiling rncc v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: enum is never used: `Operation`
[INFO] [stderr]   --> src/network.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | enum Operation {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.93s
[INFO] running `"docker" "inspect" "7201f63178ca604a1572e9a6f42f6fe4e9f4919318503e5ef1b0041233f71e0e"`
[INFO] running `"docker" "rm" "-f" "7201f63178ca604a1572e9a6f42f6fe4e9f4919318503e5ef1b0041233f71e0e"`
[INFO] [stdout] 7201f63178ca604a1572e9a6f42f6fe4e9f4919318503e5ef1b0041233f71e0e
[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/saem/rncc:/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] e3144214952d67d88a228ae2e4e56e9cae8fbe24877f141058558d8417045cbe
[INFO] running `"docker" "start" "-a" "e3144214952d67d88a228ae2e4e56e9cae8fbe24877f141058558d8417045cbe"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/rncc-0c238836049345c2
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test network::tests::empty_network_is_empty ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "e3144214952d67d88a228ae2e4e56e9cae8fbe24877f141058558d8417045cbe"`
[INFO] running `"docker" "rm" "-f" "e3144214952d67d88a228ae2e4e56e9cae8fbe24877f141058558d8417045cbe"`
[INFO] [stdout] e3144214952d67d88a228ae2e4e56e9cae8fbe24877f141058558d8417045cbe