[INFO] updating cached repository sharkdp/kickoff
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/sharkdp/kickoff
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/sharkdp/kickoff" "work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/sharkdp/kickoff"`
[INFO] [stderr] Cloning into 'work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/sharkdp/kickoff'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/sharkdp/kickoff" "work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/sharkdp/kickoff"`
[INFO] [stderr] Cloning into 'work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/sharkdp/kickoff'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] c4f0a438e686daf0349dad30eada94367a8bd86e
[INFO] sha for GitHub repo sharkdp/kickoff: c4f0a438e686daf0349dad30eada94367a8bd86e
[INFO] validating manifest of sharkdp/kickoff on toolchain master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0bbc3927e28c22edefe6a1353b5ecc95ea9a104-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of sharkdp/kickoff on toolchain try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b9139d2caca1db46014a9c302d5c47cfae0d8ae0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing sharkdp/kickoff
[INFO] finished frobbing sharkdp/kickoff
[INFO] frobbed toml for sharkdp/kickoff written to work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/sharkdp/kickoff/Cargo.toml
[INFO] started frobbing sharkdp/kickoff
[INFO] finished frobbing sharkdp/kickoff
[INFO] frobbed toml for sharkdp/kickoff written to work/ex/pr-57321/sources/try#b9139d2caca1db46014a9c302d5c47cfae0d8ae0/gh/sharkdp/kickoff/Cargo.toml
[INFO] crate sharkdp/kickoff has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c0bbc3927e28c22edefe6a1353b5ecc95ea9a104-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b9139d2caca1db46014a9c302d5c47cfae0d8ae0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking sharkdp/kickoff against master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104 for pr-57321
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57321/worker-7/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57321/sources/master#c0bbc3927e28c22edefe6a1353b5ecc95ea9a104/gh/sharkdp/kickoff:/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=forbid" "-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" "+c0bbc3927e28c22edefe6a1353b5ecc95ea9a104-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 90e80eeb17a9c5fe6cf3d00e971f575fd551da7c9028a2c3c4c3b952d81bad4c
[INFO] running `"docker" "start" "-a" "90e80eeb17a9c5fe6cf3d00e971f575fd551da7c9028a2c3c4c3b952d81bad4c"`
[INFO] [stderr]     Checking term_size v0.3.1
[INFO] [stderr]     Checking log v0.4.5
[INFO] [stderr]     Checking ctrlc v3.1.1
[INFO] [stderr]    Compiling syn v0.15.6
[INFO] [stderr]     Checking regex v1.0.5
[INFO] [stderr]     Checking textwrap v0.10.0
[INFO] [stderr]     Checking clap v2.32.0
[INFO] [stderr]     Checking env_logger v0.5.13
[INFO] [stderr]    Compiling serde_derive v1.0.79
[INFO] [stderr]     Checking kickoff v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `socket_server`
[INFO] [stderr]   --> src/controller.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |         let socket_server = thread::spawn(move || {
[INFO] [stderr]    |             ^^^^^^^^^^^^^ help: consider using `_socket_server` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `socket_server`
[INFO] [stderr]   --> src/controller.rs:37:13
[INFO] [stderr]    |
[INFO] [stderr] 37 |         let socket_server = thread::spawn(move || {
[INFO] [stderr]    |             ^^^^^^^^^^^^^ help: consider using `_socket_server` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ClusterIterator`
[INFO] [stderr]   --> src/util/cluster.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub struct ClusterIterator<T> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `from`
[INFO] [stderr]   --> src/util/cluster.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn from<I: Iterator<Item = T> + 'static>(base: I) -> ClusterIterator<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 37.38s
[INFO] running `"docker" "inspect" "90e80eeb17a9c5fe6cf3d00e971f575fd551da7c9028a2c3c4c3b952d81bad4c"`
[INFO] running `"docker" "rm" "-f" "90e80eeb17a9c5fe6cf3d00e971f575fd551da7c9028a2c3c4c3b952d81bad4c"`
[INFO] [stdout] 90e80eeb17a9c5fe6cf3d00e971f575fd551da7c9028a2c3c4c3b952d81bad4c