[INFO] updating cached repository illegalprime/rust-ddp
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/illegalprime/rust-ddp
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/illegalprime/rust-ddp" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/illegalprime/rust-ddp"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/illegalprime/rust-ddp'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/illegalprime/rust-ddp" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/illegalprime/rust-ddp"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/illegalprime/rust-ddp'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4d73ed647b9d331a2819a825299525bfd4d7a47f
[INFO] sha for GitHub repo illegalprime/rust-ddp: 4d73ed647b9d331a2819a825299525bfd4d7a47f
[INFO] validating manifest of illegalprime/rust-ddp on toolchain master#39401465da4ce27aeeb2c2a26133ac35c63aa515
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of illegalprime/rust-ddp on toolchain try#f45cc3094ee337acd688771b9234318046b0572d
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing illegalprime/rust-ddp
[INFO] finished frobbing illegalprime/rust-ddp
[INFO] frobbed toml for illegalprime/rust-ddp written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/illegalprime/rust-ddp/Cargo.toml
[INFO] started frobbing illegalprime/rust-ddp
[INFO] finished frobbing illegalprime/rust-ddp
[INFO] frobbed toml for illegalprime/rust-ddp written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/illegalprime/rust-ddp/Cargo.toml
[INFO] crate illegalprime/rust-ddp already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+f45cc3094ee337acd688771b9234318046b0572d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking illegalprime/rust-ddp against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-2/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/illegalprime/rust-ddp:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/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" "+39401465da4ce27aeeb2c2a26133ac35c63aa515-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 3234d92e638a9c95836e540cb09ecefdf595bbd65763c343011e8ee82f122067
[INFO] running `"docker" "start" "-a" "3234d92e638a9c95836e540cb09ecefdf595bbd65763c343011e8ee82f122067"`
[INFO] [stderr]     Checking base64 v0.5.2
[INFO] [stderr]     Checking serde_json v1.0.17
[INFO] [stderr]     Checking tokio-threadpool v0.1.3
[INFO] [stderr]     Checking hyper v0.10.13
[INFO] [stderr]     Checking tokio-fs v0.1.0
[INFO] [stderr]     Checking tokio v0.1.6
[INFO] [stderr]     Checking tokio-core v0.1.17
[INFO] [stderr]     Checking tokio-tls v0.1.4
[INFO] [stderr]     Checking websocket v0.20.2
[INFO] [stderr]     Checking ddp v0.0.5 (/opt/crater/workdir)
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]    --> src/client/connection.rs:490:25
[INFO] [stderr]     |
[INFO] [stderr] 490 |             if let Some(mut listeners) = self.subs.get_mut(id) {
[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/client/connection.rs:490:25
[INFO] [stderr]     |
[INFO] [stderr] 490 |             if let Some(mut listeners) = self.subs.get_mut(id) {
[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]     Finished dev [unoptimized + debuginfo] target(s) in 9.45s
[INFO] running `"docker" "inspect" "3234d92e638a9c95836e540cb09ecefdf595bbd65763c343011e8ee82f122067"`
[INFO] running `"docker" "rm" "-f" "3234d92e638a9c95836e540cb09ecefdf595bbd65763c343011e8ee82f122067"`
[INFO] [stdout] 3234d92e638a9c95836e540cb09ecefdf595bbd65763c343011e8ee82f122067