[INFO] updating cached repository hayatoito/icfp2006
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/hayatoito/icfp2006
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/hayatoito/icfp2006" "work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/hayatoito/icfp2006"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/hayatoito/icfp2006'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hayatoito/icfp2006" "work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/hayatoito/icfp2006"`
[INFO] [stderr] Cloning into 'work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/hayatoito/icfp2006'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d2761d0704b84f5c2096bae37be5d0bef3641251
[INFO] sha for GitHub repo hayatoito/icfp2006: d2761d0704b84f5c2096bae37be5d0bef3641251
[INFO] validating manifest of hayatoito/icfp2006 on toolchain master#a850a426491e14186af2250549bf41256b5938d2
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of hayatoito/icfp2006 on toolchain try#06a150c7d11500b41499224f165e9de1de096768
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing hayatoito/icfp2006
[INFO] finished frobbing hayatoito/icfp2006
[INFO] frobbed toml for hayatoito/icfp2006 written to work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/hayatoito/icfp2006/Cargo.toml
[INFO] started frobbing hayatoito/icfp2006
[INFO] finished frobbing hayatoito/icfp2006
[INFO] frobbed toml for hayatoito/icfp2006 written to work/ex/pr-60162/sources/try#06a150c7d11500b41499224f165e9de1de096768/gh/hayatoito/icfp2006/Cargo.toml
[INFO] crate hayatoito/icfp2006 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+a850a426491e14186af2250549bf41256b5938d2-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+06a150c7d11500b41499224f165e9de1de096768-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking hayatoito/icfp2006 against master#a850a426491e14186af2250549bf41256b5938d2 for pr-60162
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-60162/worker-6/master#a850a426491e14186af2250549bf41256b5938d2:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-60162/sources/master#a850a426491e14186af2250549bf41256b5938d2/gh/hayatoito/icfp2006:/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" "+a850a426491e14186af2250549bf41256b5938d2-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 13e59650355b1d63b513ebeff32c13fc115ff22a2393138e7f7c82e4748d40a9
[INFO] running `"docker" "start" "-a" "13e59650355b1d63b513ebeff32c13fc115ff22a2393138e7f7c82e4748d40a9"`
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking loggerv v0.4.0
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking env_logger v0.4.3
[INFO] [stderr]     Checking structopt v0.1.1
[INFO] [stderr]    Compiling structopt-derive v0.1.1
[INFO] [stderr]     Checking aho-corasick v0.5.3
[INFO] [stderr]     Checking thread_local v0.2.7
[INFO] [stderr]     Checking regex v0.1.80
[INFO] [stderr]     Checking icfp2006 v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `InteractiveUm`
[INFO] [stderr]    --> src/um.rs:242:1
[INFO] [stderr]     |
[INFO] [stderr] 242 | struct InteractiveUm<R, W> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `repl`
[INFO] [stderr]    --> src/um.rs:251:5
[INFO] [stderr]     |
[INFO] [stderr] 251 |     pub fn repl(&mut self, line: R) -> Option<&W> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `InteractiveUm`
[INFO] [stderr]    --> src/um.rs:242:1
[INFO] [stderr]     |
[INFO] [stderr] 242 | struct InteractiveUm<R, W> {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `repl`
[INFO] [stderr]    --> src/um.rs:251:5
[INFO] [stderr]     |
[INFO] [stderr] 251 |     pub fn repl(&mut self, line: R) -> Option<&W> {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 5.13s
[INFO] running `"docker" "inspect" "13e59650355b1d63b513ebeff32c13fc115ff22a2393138e7f7c82e4748d40a9"`
[INFO] running `"docker" "rm" "-f" "13e59650355b1d63b513ebeff32c13fc115ff22a2393138e7f7c82e4748d40a9"`
[INFO] [stdout] 13e59650355b1d63b513ebeff32c13fc115ff22a2393138e7f7c82e4748d40a9