[INFO] updating cached repository jcushman/coolsounds
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/jcushman/coolsounds
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/jcushman/coolsounds" "work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/jcushman/coolsounds"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/jcushman/coolsounds'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/jcushman/coolsounds" "work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/jcushman/coolsounds"`
[INFO] [stderr] Cloning into 'work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/jcushman/coolsounds'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 12a723c6196edf90a1bf8a9d5d4d0b2faf599e68
[INFO] sha for GitHub repo jcushman/coolsounds: 12a723c6196edf90a1bf8a9d5d4d0b2faf599e68
[INFO] validating manifest of jcushman/coolsounds on toolchain master#5f9c0448dde167128d668da4555879f64e56af1d
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of jcushman/coolsounds on toolchain try#8ec8125bea94852768b56958f05da47666c21ab0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing jcushman/coolsounds
[INFO] finished frobbing jcushman/coolsounds
[INFO] frobbed toml for jcushman/coolsounds written to work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/jcushman/coolsounds/Cargo.toml
[INFO] started frobbing jcushman/coolsounds
[INFO] finished frobbing jcushman/coolsounds
[INFO] frobbed toml for jcushman/coolsounds written to work/ex/pr-62133/sources/try#8ec8125bea94852768b56958f05da47666c21ab0/gh/jcushman/coolsounds/Cargo.toml
[INFO] crate jcushman/coolsounds already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+8ec8125bea94852768b56958f05da47666c21ab0-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking jcushman/coolsounds against master#5f9c0448dde167128d668da4555879f64e56af1d for pr-62133
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62133/worker-1/master#5f9c0448dde167128d668da4555879f64e56af1d:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62133/sources/master#5f9c0448dde167128d668da4555879f64e56af1d/gh/jcushman/coolsounds:/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" "+5f9c0448dde167128d668da4555879f64e56af1d-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 4ace08cdaa9e225faf9d7f0c3d4835e34f8f4baea72a3125ab3ddc06b1e83895
[INFO] running `"docker" "start" "-a" "4ace08cdaa9e225faf9d7f0c3d4835e34f8f4baea72a3125ab3ddc06b1e83895"`
[INFO] [stderr]     Checking hound v3.2.0
[INFO] [stderr]     Checking coolsounds v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::env;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:50:29
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let mut sources:Vec<Box<Source<Item=f32> + Send>> = Vec::new();
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Source<Item=f32> + Send`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'rodio::get_default_endpoint'
[INFO] [stderr]    --> src/main.rs:115:24
[INFO] [stderr]     |
[INFO] [stderr] 115 |         let endpoint = rodio::get_default_endpoint().unwrap();
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::env`
[INFO] [stderr]   --> src/main.rs:13:5
[INFO] [stderr]    |
[INFO] [stderr] 13 | use std::env;
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:50:29
[INFO] [stderr]    |
[INFO] [stderr] 50 |     let mut sources:Vec<Box<Source<Item=f32> + Send>> = Vec::new();
[INFO] [stderr]    |                             ^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Source<Item=f32> + Send`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(bare_trait_objects)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'rodio::get_default_endpoint'
[INFO] [stderr]    --> src/main.rs:115:24
[INFO] [stderr]     |
[INFO] [stderr] 115 |         let endpoint = rodio::get_default_endpoint().unwrap();
[INFO] [stderr]     |                        ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(deprecated)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut sink = Sink::new(&endpoint);
[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:118:17
[INFO] [stderr]     |
[INFO] [stderr] 118 |             let mut sink = Sink::new(&endpoint);
[INFO] [stderr]     |                 ----^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sink_for_source`
[INFO] [stderr]   --> src/main.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | / fn sink_for_source<S>(endpoint: &Endpoint, source: S) -> Sink
[INFO] [stderr] 24 | |         where S: Source + Send + 'static,
[INFO] [stderr] 25 | |               S::Item: Sample,
[INFO] [stderr] 26 | |               S::Item: Send{
[INFO] [stderr] ...  |
[INFO] [stderr] 29 | |     sink
[INFO] [stderr] 30 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:27:9
[INFO] [stderr]    |
[INFO] [stderr] 27 |     let mut sink = Sink::new(&endpoint);
[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:118:17
[INFO] [stderr]     |
[INFO] [stderr] 118 |             let mut sink = Sink::new(&endpoint);
[INFO] [stderr]     |                 ----^^^^
[INFO] [stderr]     |                 |
[INFO] [stderr]     |                 help: remove this `mut`
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sink_for_source`
[INFO] [stderr]   --> src/main.rs:23:1
[INFO] [stderr]    |
[INFO] [stderr] 23 | / fn sink_for_source<S>(endpoint: &Endpoint, source: S) -> Sink
[INFO] [stderr] 24 | |         where S: Source + Send + 'static,
[INFO] [stderr] 25 | |               S::Item: Sample,
[INFO] [stderr] 26 | |               S::Item: Send{
[INFO] [stderr] ...  |
[INFO] [stderr] 29 | |     sink
[INFO] [stderr] 30 | | }
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.75s
[INFO] running `"docker" "inspect" "4ace08cdaa9e225faf9d7f0c3d4835e34f8f4baea72a3125ab3ddc06b1e83895"`
[INFO] running `"docker" "rm" "-f" "4ace08cdaa9e225faf9d7f0c3d4835e34f8f4baea72a3125ab3ddc06b1e83895"`
[INFO] [stdout] 4ace08cdaa9e225faf9d7f0c3d4835e34f8f4baea72a3125ab3ddc06b1e83895