[INFO] cloning repository gugahoa/simple-ws-rs
[INFO] running `"git" "clone" "--bare" "git://github.com/gugahoa/simple-ws-rs.git" "work/cache/sources/gh/gugahoa/simple-ws-rs"`
[INFO] [stderr] Cloning into bare repository 'work/cache/sources/gh/gugahoa/simple-ws-rs'...
[INFO] running `"git" "clone" "work/cache/sources/gh/gugahoa/simple-ws-rs" "work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/gugahoa/simple-ws-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/gugahoa/simple-ws-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/gugahoa/simple-ws-rs" "work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/gugahoa/simple-ws-rs"`
[INFO] [stderr] Cloning into 'work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/gugahoa/simple-ws-rs'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] ce41193348ac4ab9a07526e2e77a54b262ac7582
[INFO] sha for GitHub repo gugahoa/simple-ws-rs: ce41193348ac4ab9a07526e2e77a54b262ac7582
[INFO] validating manifest of gugahoa/simple-ws-rs on toolchain master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of gugahoa/simple-ws-rs on toolchain try#8f81d0bf6baf07b92f1246696722485c4ca0b049
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing gugahoa/simple-ws-rs
[INFO] finished frobbing gugahoa/simple-ws-rs
[INFO] frobbed toml for gugahoa/simple-ws-rs written to work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/gugahoa/simple-ws-rs/Cargo.toml
[INFO] started frobbing gugahoa/simple-ws-rs
[INFO] finished frobbing gugahoa/simple-ws-rs
[INFO] frobbed toml for gugahoa/simple-ws-rs written to work/ex/pr-62008/sources/try#8f81d0bf6baf07b92f1246696722485c4ca0b049/gh/gugahoa/simple-ws-rs/Cargo.toml
[INFO] crate gugahoa/simple-ws-rs already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/ec2-user/crater/work/local/cargo-home/bin/cargo" "+8f81d0bf6baf07b92f1246696722485c4ca0b049-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking gugahoa/simple-ws-rs against master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1 for pr-62008
[INFO] running `"docker" "create" "-v" "/mnt/big/ec2-user/crater/work/local/target-dirs/pr-62008/worker-1/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1:/opt/crater/target:rw,Z" "-v" "/mnt/big/ec2-user/crater/work/ex/pr-62008/sources/master#848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1/gh/gugahoa/simple-ws-rs:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/ec2-user/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/ec2-user/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" "+848e0a23f34aaab3e4a974b031c86ef2a4e4fcc1-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 2c5c12bd42b4fd38ca580f622ad1b6668077528aaec09810a121c215dc242a63
[INFO] running `"docker" "start" "-a" "2c5c12bd42b4fd38ca580f622ad1b6668077528aaec09810a121c215dc242a63"`
[INFO] [stderr]    Compiling http-muncher v0.3.1
[INFO] [stderr]     Checking mio v0.6.14 (https://github.com/carllerche/mio#c419ed6e)
[INFO] [stderr]     Checking chat v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:299:29
[INFO] [stderr]     |
[INFO] [stderr] 299 |                         let mut client = websocket.clients.get_mut(&client_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: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:307:21
[INFO] [stderr]     |
[INFO] [stderr] 307 |                 let mut client = websocket.clients.get_mut(&token).unwrap();
[INFO] [stderr]     |                     ----^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:299:29
[INFO] [stderr]     |
[INFO] [stderr] 299 |                         let mut client = websocket.clients.get_mut(&client_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: variable does not need to be mutable
[INFO] [stderr]    --> src/main.rs:307:21
[INFO] [stderr]     |
[INFO] [stderr] 307 |                 let mut client = websocket.clients.get_mut(&token).unwrap();
[INFO] [stderr]     |                     ----^^^^^^
[INFO] [stderr]     |                     |
[INFO] [stderr]     |                     help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.48s
[INFO] running `"docker" "inspect" "2c5c12bd42b4fd38ca580f622ad1b6668077528aaec09810a121c215dc242a63"`
[INFO] running `"docker" "rm" "-f" "2c5c12bd42b4fd38ca580f622ad1b6668077528aaec09810a121c215dc242a63"`
[INFO] [stdout] 2c5c12bd42b4fd38ca580f622ad1b6668077528aaec09810a121c215dc242a63