Dec 11 15:21:55.823 INFO checking knknkn1162/rust_server_test against try#aa9aa79c3c583aab59ac9134542d60a780c35e2e for pr-56677
Dec 11 15:21:55.823 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-1/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-56677/try#aa9aa79c3c583aab59ac9134542d60a780c35e2e:/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 +aa9aa79c3c583aab59ac9134542d60a780c35e2e-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 11 15:21:56.067 INFO [stdout] 85bd52da52db1bc96b4ef886bffd1f2c6a13e08d3f0539331d3cd3a3c0d4e552
Dec 11 15:21:56.070 INFO running `"docker" "start" "-a" "85bd52da52db1bc96b4ef886bffd1f2c6a13e08d3f0539331d3cd3a3c0d4e552"`
Dec 11 15:21:57.104 INFO [stderr] usermod: no changes
Dec 11 15:21:57.227 INFO [stderr]     Checking env_logger v0.4.3
Dec 11 15:21:57.914 INFO [stderr]     Checking simple_line v0.1.0 (/source)
Dec 11 15:21:59.204 INFO [stderr] warning: unused import: `Future`
Dec 11 15:21:59.204 INFO [stderr]   --> src/main.rs:16:23
Dec 11 15:21:59.204 INFO [stderr]    |
Dec 11 15:21:59.204 INFO [stderr] 16 | use futures::{future, Future};
Dec 11 15:21:59.204 INFO [stderr]    |                       ^^^^^^
Dec 11 15:21:59.204 INFO [stderr]    |
Dec 11 15:21:59.204 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 11 15:21:59.204 INFO [stderr] 
Dec 11 15:21:59.260 INFO [stderr] warning: variable does not need to be mutable
Dec 11 15:21:59.260 INFO [stderr]    --> src/main.rs:151:9
Dec 11 15:21:59.260 INFO [stderr]     |
Dec 11 15:21:59.260 INFO [stderr] 151 |     let mut server = TcpServer::new(Http, addr);
Dec 11 15:21:59.260 INFO [stderr]     |         ----^^^^^^
Dec 11 15:21:59.260 INFO [stderr]     |         |
Dec 11 15:21:59.260 INFO [stderr]     |         help: remove this `mut`
Dec 11 15:21:59.271 INFO [stderr] warning: unused import: `Future`
Dec 11 15:21:59.271 INFO [stderr]     |
Dec 11 15:21:59.271 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 15:21:59.271 INFO [stderr] 
Dec 11 15:21:59.271 INFO [stderr]   --> src/main.rs:16:23
Dec 11 15:21:59.284 INFO [stderr]    |
Dec 11 15:21:59.284 INFO [stderr] 16 | use futures::{future, Future};
Dec 11 15:21:59.284 INFO [stderr]    |                       ^^^^^^
Dec 11 15:21:59.284 INFO [stderr]    |
Dec 11 15:21:59.284 INFO [stderr]    = note: #[warn(unused_imports)] on by default
Dec 11 15:21:59.284 INFO [stderr] 
Dec 11 15:21:59.352 INFO [stderr] warning: variable does not need to be mutable
Dec 11 15:21:59.352 INFO [stderr]    --> src/main.rs:151:9
Dec 11 15:21:59.352 INFO [stderr]     |
Dec 11 15:21:59.352 INFO [stderr] 151 |     let mut server = TcpServer::new(Http, addr);
Dec 11 15:21:59.353 INFO [stderr]     |         ----^^^^^^
Dec 11 15:21:59.353 INFO [stderr]     |         |
Dec 11 15:21:59.353 INFO [stderr]     |         help: remove this `mut`
Dec 11 15:21:59.353 INFO [stderr]     |
Dec 11 15:21:59.353 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 11 15:21:59.353 INFO [stderr] 
Dec 11 15:21:59.393 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.28s
Dec 11 15:21:59.398 INFO [stderr] su: No module specific data is present
Dec 11 15:21:59.956 INFO running `"docker" "inspect" "85bd52da52db1bc96b4ef886bffd1f2c6a13e08d3f0539331d3cd3a3c0d4e552"`
Dec 11 15:22:00.061 INFO running `"docker" "rm" "-f" "85bd52da52db1bc96b4ef886bffd1f2c6a13e08d3f0539331d3cd3a3c0d4e552"`
Dec 11 15:22:00.408 INFO [stdout] 85bd52da52db1bc96b4ef886bffd1f2c6a13e08d3f0539331d3cd3a3c0d4e552