[INFO] updating cached repository bupknar/speeltuin
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/bupknar/speeltuin
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/bupknar/speeltuin" "work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/bupknar/speeltuin"`
[INFO] [stderr] Cloning into 'work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/bupknar/speeltuin'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/bupknar/speeltuin" "work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/bupknar/speeltuin"`
[INFO] [stderr] Cloning into 'work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/bupknar/speeltuin'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] b131f9e36ec4e576541b9ffba0e91f00b90a8ce7
[INFO] sha for GitHub repo bupknar/speeltuin: b131f9e36ec4e576541b9ffba0e91f00b90a8ce7
[INFO] validating manifest of bupknar/speeltuin on toolchain master#6ea4036cd20a4b1ab1d56e555108c21735ff6946
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of bupknar/speeltuin on toolchain try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing bupknar/speeltuin
[INFO] finished frobbing bupknar/speeltuin
[INFO] frobbed toml for bupknar/speeltuin written to work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/bupknar/speeltuin/Cargo.toml
[INFO] started frobbing bupknar/speeltuin
[INFO] finished frobbing bupknar/speeltuin
[INFO] frobbed toml for bupknar/speeltuin written to work/ex/pr-62181/sources/try#003a7b6b5753e8509fdfe7949d4f0873ba71e4fc/gh/bupknar/speeltuin/Cargo.toml
[INFO] crate bupknar/speeltuin already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+003a7b6b5753e8509fdfe7949d4f0873ba71e4fc-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking bupknar/speeltuin against master#6ea4036cd20a4b1ab1d56e555108c21735ff6946 for pr-62181
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62181/worker-2/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62181/sources/master#6ea4036cd20a4b1ab1d56e555108c21735ff6946/gh/bupknar/speeltuin:/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" "+6ea4036cd20a4b1ab1d56e555108c21735ff6946-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 97cda5be20a6efb07ed31ab7db120a895a8d97f8335c330e1de694398e2163f2
[INFO] running `"docker" "start" "-a" "97cda5be20a6efb07ed31ab7db120a895a8d97f8335c330e1de694398e2163f2"`
[INFO] [stderr]     Checking rustc-demangle v0.1.8
[INFO] [stderr]    Compiling backtrace-sys v0.1.22
[INFO] [stderr]    Compiling synstructure v0.6.1
[INFO] [stderr]     Checking sdl2 v0.31.0
[INFO] [stderr]    Compiling failure_derive v0.1.1
[INFO] [stderr]     Checking backtrace v0.3.8
[INFO] [stderr]     Checking failure v0.1.1
[INFO] [stderr]     Checking speeltuin v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused variable: `conn`
[INFO] [stderr]    --> src/main.rs:116:16
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn dot_pattern(conn: engine::Connection) {}
[INFO] [stderr]     |                ^^^^ help: consider prefixing with an underscore: `_conn`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]   --> src/main.rs:42:23
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn decrease(self, input: impl Source<Output = bool>) -> Throttle {
[INFO] [stderr]    |                       ^^^^^ help: consider prefixing with an underscore: `_input`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]   --> src/main.rs:46:23
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn increase(self, input: impl Source<Output = bool>) -> Throttle {
[INFO] [stderr]    |                       ^^^^^ help: consider prefixing with an underscore: `_input`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `conn`
[INFO] [stderr]    --> src/main.rs:116:16
[INFO] [stderr]     |
[INFO] [stderr] 116 | fn dot_pattern(conn: engine::Connection) {}
[INFO] [stderr]     |                ^^^^ help: consider prefixing with an underscore: `_conn`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]   --> src/main.rs:42:23
[INFO] [stderr]    |
[INFO] [stderr] 42 |     fn decrease(self, input: impl Source<Output = bool>) -> Throttle {
[INFO] [stderr]    |                       ^^^^^ help: consider prefixing with an underscore: `_input`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `input`
[INFO] [stderr]   --> src/main.rs:46:23
[INFO] [stderr]    |
[INFO] [stderr] 46 |     fn increase(self, input: impl Source<Output = bool>) -> Throttle {
[INFO] [stderr]    |                       ^^^^^ help: consider prefixing with an underscore: `_input`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 11.14s
[INFO] running `"docker" "inspect" "97cda5be20a6efb07ed31ab7db120a895a8d97f8335c330e1de694398e2163f2"`
[INFO] running `"docker" "rm" "-f" "97cda5be20a6efb07ed31ab7db120a895a8d97f8335c330e1de694398e2163f2"`
[INFO] [stdout] 97cda5be20a6efb07ed31ab7db120a895a8d97f8335c330e1de694398e2163f2