Dec 04 10:18:26.597 INFO checking sharkdp/kickoff against master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc for pr-56481
Dec 04 10:18:26.597 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56481/worker-0/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-0/pr-56481/master#c8ae2de8363be088604ffa2ccba84ff7ad7250bc:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +c8ae2de8363be088604ffa2ccba84ff7ad7250bc-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Dec 04 10:18:27.039 INFO [stdout] a1432b82765007362174849909b0e66be55b080d9cc81bc244781348b64b51d7
Dec 04 10:18:27.045 INFO running `"docker" "start" "-a" "a1432b82765007362174849909b0e66be55b080d9cc81bc244781348b64b51d7"`
Dec 04 10:18:28.122 INFO [stderr] usermod: no changes
Dec 04 10:18:28.297 INFO [stderr]     Checking log v0.4.5
Dec 04 10:18:28.311 INFO [stderr]     Checking clap v2.32.0
Dec 04 10:18:28.311 INFO [stderr]     Checking ctrlc v3.1.1
Dec 04 10:18:28.311 INFO [stderr]     Checking serde_json v1.0.31
Dec 04 10:18:28.311 INFO [stderr]    Compiling syn v0.15.6
Dec 04 10:18:28.312 INFO [stderr]     Checking regex v1.0.5
Dec 04 10:18:37.012 INFO [stderr]     Checking env_logger v0.5.13
Dec 04 10:18:46.419 INFO [stderr]    Compiling serde_derive v1.0.79
Dec 04 10:19:01.238 INFO [stderr]     Checking kickoff v0.1.0 (/source)
Dec 04 10:19:02.899 INFO [stderr] warning: unused variable: `socket_server`
Dec 04 10:19:02.899 INFO [stderr]   --> src/controller.rs:37:13
Dec 04 10:19:02.899 INFO [stderr]    |
Dec 04 10:19:02.899 INFO [stderr] 37 |         let socket_server = thread::spawn(move || {
Dec 04 10:19:02.899 INFO [stderr]    |             ^^^^^^^^^^^^^ help: consider using `_socket_server` instead
Dec 04 10:19:02.915 INFO [stderr]    |
Dec 04 10:19:02.915 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 10:19:02.915 INFO [stderr] 
Dec 04 10:19:03.447 INFO [stderr] warning: struct is never constructed: `ClusterIterator`
Dec 04 10:19:03.447 INFO [stderr]   --> src/util/cluster.rs:10:1
Dec 04 10:19:03.447 INFO [stderr]    |
Dec 04 10:19:03.447 INFO [stderr] 10 | pub struct ClusterIterator<T> {
Dec 04 10:19:03.447 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 10:19:03.463 INFO [stderr] warning: unused variable: `socket_server`
Dec 04 10:19:03.463 INFO [stderr]   --> src/controller.rs:37:13
Dec 04 10:19:03.463 INFO [stderr]    |
Dec 04 10:19:03.463 INFO [stderr] 37 |         let socket_server = thread::spawn(move || {
Dec 04 10:19:03.463 INFO [stderr]    |             ^^^^^^^^^^^^^ help: consider using `_socket_server` instead
Dec 04 10:19:03.463 INFO [stderr]    |
Dec 04 10:19:03.463 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 04 10:19:03.463 INFO [stderr] 
Dec 04 10:19:03.467 INFO [stderr]    |
Dec 04 10:19:03.467 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 04 10:19:03.467 INFO [stderr] 
Dec 04 10:19:03.467 INFO [stderr] warning: method is never used: `from`
Dec 04 10:19:03.467 INFO [stderr]   --> src/util/cluster.rs:15:5
Dec 04 10:19:03.467 INFO [stderr]    |
Dec 04 10:19:03.467 INFO [stderr] 15 |     pub fn from<I: Iterator<Item = T> + 'static>(base: I) -> ClusterIterator<T> {
Dec 04 10:19:03.467 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 04 10:19:03.467 INFO [stderr] 
Dec 04 10:19:03.855 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 35.69s
Dec 04 10:19:03.871 INFO [stderr] su: No module specific data is present
Dec 04 10:19:05.463 INFO running `"docker" "inspect" "a1432b82765007362174849909b0e66be55b080d9cc81bc244781348b64b51d7"`
Dec 04 10:19:05.839 INFO running `"docker" "rm" "-f" "a1432b82765007362174849909b0e66be55b080d9cc81bc244781348b64b51d7"`
Dec 04 10:19:06.231 INFO [stdout] a1432b82765007362174849909b0e66be55b080d9cc81bc244781348b64b51d7