Nov 29 13:58:44.391 INFO checking zhenhuanlee/simple_server against try#32252761328f59ccfadb1bafb8148c685bc830b3 for pr-56323
Nov 29 13:58:44.391 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56323/worker-7/try#32252761328f59ccfadb1bafb8148c685bc830b3:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-7/pr-56323/try#32252761328f59ccfadb1bafb8148c685bc830b3:/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 +32252761328f59ccfadb1bafb8148c685bc830b3-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"`
Nov 29 13:58:44.824 INFO [stdout] 045aae16ed8b5a6a34e82e12b7c513b36b4bf8e895727dc03c00b9b1bcdfeaf7
Nov 29 13:58:44.830 INFO running `"docker" "start" "-a" "045aae16ed8b5a6a34e82e12b7c513b36b4bf8e895727dc03c00b9b1bcdfeaf7"`
Nov 29 13:58:46.333 INFO [stderr] usermod: no changes
Nov 29 13:58:46.381 INFO [stderr]     Checking simple_server v0.1.0 (/source)
Nov 29 13:58:46.776 INFO [stderr] warning: field is never used: `workers`
Nov 29 13:58:46.776 INFO [stderr]  --> src/hello/lib.rs:8:3
Nov 29 13:58:46.776 INFO [stderr]   |
Nov 29 13:58:46.776 INFO [stderr] 8 |   workers: Vec<Worker>,
Nov 29 13:58:46.776 INFO [stderr]   |   ^^^^^^^^^^^^^^^^^^^^
Nov 29 13:58:46.776 INFO [stderr]   |
Nov 29 13:58:46.776 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 29 13:58:46.776 INFO [stderr] 
Nov 29 13:58:46.776 INFO [stderr] warning: field is never used: `id`
Nov 29 13:58:46.776 INFO [stderr]   --> src/hello/lib.rs:15:3
Nov 29 13:58:46.776 INFO [stderr]    |
Nov 29 13:58:46.776 INFO [stderr] 15 |   id: usize,
Nov 29 13:58:46.776 INFO [stderr]    |   ^^^^^^^^^
Nov 29 13:58:46.776 INFO [stderr] 
Nov 29 13:58:46.776 INFO [stderr] warning: field is never used: `thread`
Nov 29 13:58:46.776 INFO [stderr]   --> src/hello/lib.rs:16:3
Nov 29 13:58:46.776 INFO [stderr]    |
Nov 29 13:58:46.776 INFO [stderr] 16 |   thread: thread::JoinHandle<()>,
Nov 29 13:58:46.776 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 29 13:58:46.776 INFO [stderr] 
Nov 29 13:58:46.828 INFO [stderr] warning: field is never used: `workers`
Nov 29 13:58:46.828 INFO [stderr]  --> src/hello/lib.rs:8:3
Nov 29 13:58:46.828 INFO [stderr]   |
Nov 29 13:58:46.828 INFO [stderr] 8 |   workers: Vec<Worker>,
Nov 29 13:58:46.828 INFO [stderr]   |   ^^^^^^^^^^^^^^^^^^^^
Nov 29 13:58:46.828 INFO [stderr]   |
Nov 29 13:58:46.828 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 29 13:58:46.828 INFO [stderr] 
Nov 29 13:58:46.828 INFO [stderr] warning: field is never used: `id`
Nov 29 13:58:46.829 INFO [stderr]   --> src/hello/lib.rs:15:3
Nov 29 13:58:46.829 INFO [stderr]    |
Nov 29 13:58:46.829 INFO [stderr] 15 |   id: usize,
Nov 29 13:58:46.829 INFO [stderr]    |   ^^^^^^^^^
Nov 29 13:58:46.829 INFO [stderr] 
Nov 29 13:58:46.829 INFO [stderr] warning: field is never used: `thread`
Nov 29 13:58:46.829 INFO [stderr]   --> src/hello/lib.rs:16:3
Nov 29 13:58:46.829 INFO [stderr]    |
Nov 29 13:58:46.829 INFO [stderr] 16 |   thread: thread::JoinHandle<()>,
Nov 29 13:58:46.829 INFO [stderr]    |   ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 29 13:58:46.829 INFO [stderr] 
Nov 29 13:58:47.349 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.99s
Nov 29 13:58:47.351 INFO [stderr] su: No module specific data is present
Nov 29 13:58:48.695 INFO running `"docker" "inspect" "045aae16ed8b5a6a34e82e12b7c513b36b4bf8e895727dc03c00b9b1bcdfeaf7"`
Nov 29 13:58:48.958 INFO running `"docker" "rm" "-f" "045aae16ed8b5a6a34e82e12b7c513b36b4bf8e895727dc03c00b9b1bcdfeaf7"`
Nov 29 13:58:49.252 INFO [stdout] 045aae16ed8b5a6a34e82e12b7c513b36b4bf8e895727dc03c00b9b1bcdfeaf7