[INFO] updating cached repository Yuiki/bist
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/Yuiki/bist
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/Yuiki/bist" "work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/Yuiki/bist"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/Yuiki/bist'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/Yuiki/bist" "work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/Yuiki/bist"`
[INFO] [stderr] Cloning into 'work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/Yuiki/bist'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 1387fb57d717330ccd3c49c384e3384e756a5ff7
[INFO] sha for GitHub repo Yuiki/bist: 1387fb57d717330ccd3c49c384e3384e756a5ff7
[INFO] validating manifest of Yuiki/bist 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 Yuiki/bist 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 Yuiki/bist
[INFO] finished frobbing Yuiki/bist
[INFO] frobbed toml for Yuiki/bist written to work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/Yuiki/bist/Cargo.toml
[INFO] started frobbing Yuiki/bist
[INFO] finished frobbing Yuiki/bist
[INFO] frobbed toml for Yuiki/bist written to work/ex/pr-60914/sources/try#f45cc3094ee337acd688771b9234318046b0572d/gh/Yuiki/bist/Cargo.toml
[INFO] crate Yuiki/bist 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 Yuiki/bist against master#39401465da4ce27aeeb2c2a26133ac35c63aa515 for pr-60914
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60914/worker-4/master#39401465da4ce27aeeb2c2a26133ac35c63aa515:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60914/sources/master#39401465da4ce27aeeb2c2a26133ac35c63aa515/gh/Yuiki/bist:/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] 41478bdc5cdd1572b8b481a087502df26eb85e5ac78de5eefce18154a8154e57
[INFO] running `"docker" "start" "-a" "41478bdc5cdd1572b8b481a087502df26eb85e5ac78de5eefce18154a8154e57"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] [stderr]     Checking block-buffer v0.7.2
[INFO] [stderr]     Checking sha2 v0.8.0
[INFO] [stderr]     Checking bist v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `peer`
[INFO] [stderr]   --> src/spv.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let peer = peers.first().unwrap();
[INFO] [stderr]    |             ^^^^ help: consider prefixing with an underscore: `_peer`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]   --> src/spv.rs:50:40
[INFO] [stderr]    |
[INFO] [stderr] 50 |             framed.send(version).then(|r| {
[INFO] [stderr]    |                                        ^ help: consider prefixing with an underscore: `_r`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/spv.rs:53:21
[INFO] [stderr]    |
[INFO] [stderr] 53 |         }).map_err(|e| {});
[INFO] [stderr]    |                     ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `src`
[INFO] [stderr]   --> src/message.rs:91:26
[INFO] [stderr]    |
[INFO] [stderr] 91 |     fn decode(&mut self, src: &mut BytesMut) -> Result<Option<Self::Item>, Self::Error> {
[INFO] [stderr]    |                          ^^^ help: consider prefixing with an underscore: `_src`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `peer`
[INFO] [stderr]   --> src/spv.rs:34:13
[INFO] [stderr]    |
[INFO] [stderr] 34 |         let peer = peers.first().unwrap();
[INFO] [stderr]    |             ^^^^ help: consider prefixing with an underscore: `_peer`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `r`
[INFO] [stderr]   --> src/spv.rs:50:40
[INFO] [stderr]    |
[INFO] [stderr] 50 |             framed.send(version).then(|r| {
[INFO] [stderr]    |                                        ^ help: consider prefixing with an underscore: `_r`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `e`
[INFO] [stderr]   --> src/spv.rs:53:21
[INFO] [stderr]    |
[INFO] [stderr] 53 |         }).map_err(|e| {});
[INFO] [stderr]    |                     ^ help: consider prefixing with an underscore: `_e`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `src`
[INFO] [stderr]   --> src/message.rs:91:26
[INFO] [stderr]    |
[INFO] [stderr] 91 |     fn decode(&mut self, src: &mut BytesMut) -> Result<Option<Self::Item>, Self::Error> {
[INFO] [stderr]    |                          ^^^ help: consider prefixing with an underscore: `_src`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.42s
[INFO] running `"docker" "inspect" "41478bdc5cdd1572b8b481a087502df26eb85e5ac78de5eefce18154a8154e57"`
[INFO] running `"docker" "rm" "-f" "41478bdc5cdd1572b8b481a087502df26eb85e5ac78de5eefce18154a8154e57"`
[INFO] [stdout] 41478bdc5cdd1572b8b481a087502df26eb85e5ac78de5eefce18154a8154e57