[INFO] updating cached repository dmitryvm/websocket-server
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/dmitryvm/websocket-server
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/dmitryvm/websocket-server" "work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/dmitryvm/websocket-server"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/dmitryvm/websocket-server'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/dmitryvm/websocket-server" "work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/dmitryvm/websocket-server"`
[INFO] [stderr] Cloning into 'work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/dmitryvm/websocket-server'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 5fda1e9e9a03494a4e2296c3462d51a4481118b9
[INFO] sha for GitHub repo dmitryvm/websocket-server: 5fda1e9e9a03494a4e2296c3462d51a4481118b9
[INFO] validating manifest of dmitryvm/websocket-server on toolchain master#efe2f32a6b8217425f361ec7c206910c611c03ee
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of dmitryvm/websocket-server on toolchain try#78b0bd8441ef961f6475e3d47fe3bca38cb83432
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing dmitryvm/websocket-server
[INFO] finished frobbing dmitryvm/websocket-server
[INFO] frobbed toml for dmitryvm/websocket-server written to work/ex/pr-60039/sources/master#efe2f32a6b8217425f361ec7c206910c611c03ee/gh/dmitryvm/websocket-server/Cargo.toml
[INFO] started frobbing dmitryvm/websocket-server
[INFO] finished frobbing dmitryvm/websocket-server
[INFO] frobbed toml for dmitryvm/websocket-server written to work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/gh/dmitryvm/websocket-server/Cargo.toml
[INFO] crate dmitryvm/websocket-server already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+efe2f32a6b8217425f361ec7c206910c611c03ee-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking dmitryvm/websocket-server against try#78b0bd8441ef961f6475e3d47fe3bca38cb83432 for pr-60039
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-60039/worker-6/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-60039/sources/try#78b0bd8441ef961f6475e3d47fe3bca38cb83432/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" "+78b0bd8441ef961f6475e3d47fe3bca38cb83432-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 6b0c08a1e79483453b5195411a830e7c7619e8281da2030ec12be8e5c53d75f8
[INFO] running `"docker" "start" "-a" "6b0c08a1e79483453b5195411a830e7c7619e8281da2030ec12be8e5c53d75f8"`
[INFO] [stderr]    Compiling http-muncher v0.2.5
[INFO] [stderr]     Checking winapi v0.1.23
[INFO] [stderr]     Checking sha1 v0.1.1
[INFO] [stderr]     Checking mio v0.4.4
[INFO] [stderr]     Checking mudgate v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/frame.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::error::Error`
[INFO] [stderr]  --> src/frame.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::error::Error;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:209:17
[INFO] [stderr]     |
[INFO] [stderr] 209 |             let mut client = self.clients.get_mut(&token).unwrap();
[INFO] [stderr]     |                 ----^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_opcode`
[INFO] [stderr]    --> src/frame.rs:139:5
[INFO] [stderr]     |
[INFO] [stderr] 139 |     pub fn get_opcode(&self) -> OpCode {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:234:5
[INFO] [stderr]     |
[INFO] [stderr] 234 |     event_loop.run(&mut server);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:209:17
[INFO] [stderr]     |
[INFO] [stderr] 209 |             let mut client = self.clients.get_mut(&token).unwrap();
[INFO] [stderr]     |                 ----^^^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_mut)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `get_opcode`
[INFO] [stderr]    --> src/frame.rs:139:5
[INFO] [stderr]     |
[INFO] [stderr] 139 |     pub fn get_opcode(&self) -> OpCode {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]    --> src/main.rs:234:5
[INFO] [stderr]     |
[INFO] [stderr] 234 |     event_loop.run(&mut server);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_must_use)] on by default
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.04s
[INFO] running `"docker" "inspect" "6b0c08a1e79483453b5195411a830e7c7619e8281da2030ec12be8e5c53d75f8"`
[INFO] running `"docker" "rm" "-f" "6b0c08a1e79483453b5195411a830e7c7619e8281da2030ec12be8e5c53d75f8"`
[INFO] [stdout] 6b0c08a1e79483453b5195411a830e7c7619e8281da2030ec12be8e5c53d75f8