Dec 19 17:52:46.617 INFO checking dmitryvm/websocket-server against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 17:52:46.618 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/dmitryvm/websocket-server:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 17:52:46.888 INFO [stdout] df3dbe64ca735f14e57ba7b9dcb8755755e6e5387f6ed6e9b0ade45043053de9
Dec 19 17:52:46.889 INFO running `"docker" "start" "-a" "df3dbe64ca735f14e57ba7b9dcb8755755e6e5387f6ed6e9b0ade45043053de9"`
Dec 19 17:52:47.728 INFO [stderr]     Checking bytes v0.2.11
Dec 19 17:52:47.734 INFO [stderr]    Compiling http-muncher v0.2.5
Dec 19 17:52:47.734 INFO [stderr]     Checking winapi v0.1.23
Dec 19 17:52:47.734 INFO [stderr]     Checking nix v0.3.10
Dec 19 17:52:50.409 INFO [stderr]     Checking mio v0.4.4
Dec 19 17:52:51.577 INFO [stderr]     Checking mudgate v0.1.0 (/opt/crater/workdir)
Dec 19 17:52:52.208 INFO [stderr] warning: unused import: `std::error::Error`
Dec 19 17:52:52.212 INFO [stderr]  --> src/frame.rs:3:5
Dec 19 17:52:52.212 INFO [stderr]   |
Dec 19 17:52:52.212 INFO [stderr] 3 | use std::error::Error;
Dec 19 17:52:52.212 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 19 17:52:52.212 INFO [stderr]   |
Dec 19 17:52:52.212 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 17:52:52.212 INFO [stderr] 
Dec 19 17:52:52.306 INFO [stderr] warning: unused import: `std::error::Error`
Dec 19 17:52:52.306 INFO [stderr]  --> src/frame.rs:3:5
Dec 19 17:52:52.306 INFO [stderr]   |
Dec 19 17:52:52.306 INFO [stderr] 3 | use std::error::Error;
Dec 19 17:52:52.306 INFO [stderr]   |     ^^^^^^^^^^^^^^^^^
Dec 19 17:52:52.306 INFO [stderr]   |
Dec 19 17:52:52.306 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 17:52:52.306 INFO [stderr] 
Dec 19 17:52:52.512 INFO [stderr] warning: variable does not need to be mutable
Dec 19 17:52:52.512 INFO [stderr]    --> src/main.rs:209:17
Dec 19 17:52:52.512 INFO [stderr]     |
Dec 19 17:52:52.512 INFO [stderr] 209 |             let mut client = self.clients.get_mut(&token).unwrap();
Dec 19 17:52:52.512 INFO [stderr]     |                 ----^^^^^^
Dec 19 17:52:52.512 INFO [stderr]     |                 |
Dec 19 17:52:52.512 INFO [stderr]     |                 help: remove this `mut`
Dec 19 17:52:52.512 INFO [stderr]     |
Dec 19 17:52:52.512 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 17:52:52.512 INFO [stderr] 
Dec 19 17:52:52.552 INFO [stderr] warning: method is never used: `get_opcode`
Dec 19 17:52:52.552 INFO [stderr]    --> src/frame.rs:139:5
Dec 19 17:52:52.552 INFO [stderr]     |
Dec 19 17:52:52.552 INFO [stderr] 139 |     pub fn get_opcode(&self) -> OpCode {
Dec 19 17:52:52.552 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 17:52:52.552 INFO [stderr]     |
Dec 19 17:52:52.552 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 17:52:52.552 INFO [stderr] 
Dec 19 17:52:52.552 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 17:52:52.552 INFO [stderr]    --> src/main.rs:234:5
Dec 19 17:52:52.552 INFO [stderr]     |
Dec 19 17:52:52.552 INFO [stderr] 234 |     event_loop.run(&mut server);
Dec 19 17:52:52.552 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 17:52:52.552 INFO [stderr]     |
Dec 19 17:52:52.552 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 17:52:52.553 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 17:52:52.553 INFO [stderr] 
Dec 19 17:52:52.684 INFO [stderr] warning: variable does not need to be mutable
Dec 19 17:52:52.684 INFO [stderr]    --> src/main.rs:209:17
Dec 19 17:52:52.684 INFO [stderr]     |
Dec 19 17:52:52.684 INFO [stderr] 209 |             let mut client = self.clients.get_mut(&token).unwrap();
Dec 19 17:52:52.684 INFO [stderr]     |                 ----^^^^^^
Dec 19 17:52:52.684 INFO [stderr]     |                 |
Dec 19 17:52:52.684 INFO [stderr]     |                 help: remove this `mut`
Dec 19 17:52:52.684 INFO [stderr]     |
Dec 19 17:52:52.684 INFO [stderr]     = note: #[warn(unused_mut)] on by default
Dec 19 17:52:52.684 INFO [stderr] 
Dec 19 17:52:52.716 INFO [stderr] warning: method is never used: `get_opcode`
Dec 19 17:52:52.716 INFO [stderr]    --> src/frame.rs:139:5
Dec 19 17:52:52.716 INFO [stderr]     |
Dec 19 17:52:52.716 INFO [stderr] 139 |     pub fn get_opcode(&self) -> OpCode {
Dec 19 17:52:52.716 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 17:52:52.716 INFO [stderr]     |
Dec 19 17:52:52.716 INFO [stderr]     = note: #[warn(dead_code)] on by default
Dec 19 17:52:52.716 INFO [stderr] 
Dec 19 17:52:52.716 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 17:52:52.716 INFO [stderr]    --> src/main.rs:234:5
Dec 19 17:52:52.717 INFO [stderr]     |
Dec 19 17:52:52.717 INFO [stderr] 234 |     event_loop.run(&mut server);
Dec 19 17:52:52.717 INFO [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 17:52:52.717 INFO [stderr]     |
Dec 19 17:52:52.717 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Dec 19 17:52:52.717 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 17:52:52.717 INFO [stderr] 
Dec 19 17:52:52.752 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.11s
Dec 19 17:52:53.616 INFO running `"docker" "inspect" "df3dbe64ca735f14e57ba7b9dcb8755755e6e5387f6ed6e9b0ade45043053de9"`
Dec 19 17:52:53.850 INFO running `"docker" "rm" "-f" "df3dbe64ca735f14e57ba7b9dcb8755755e6e5387f6ed6e9b0ade45043053de9"`
Dec 19 17:52:54.240 INFO [stdout] df3dbe64ca735f14e57ba7b9dcb8755755e6e5387f6ed6e9b0ade45043053de9