[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/beta-1.38-1/sources/1.37.0/gh/hayatoito/icfp2006"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/hayatoito/icfp2006'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/hayatoito/icfp2006" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/hayatoito/icfp2006"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/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 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of hayatoito/icfp2006 on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "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/beta-1.38-1/sources/1.37.0/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/beta-1.38-1/sources/beta-2019-08-13/gh/hayatoito/icfp2006/Cargo.toml
[INFO] crate hayatoito/icfp2006 already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing hayatoito/icfp2006 against 1.37.0 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/hayatoito/icfp2006:/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=warn" "-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" "+1.37.0" "build" "--frozen"`
[INFO] [stdout] 7b5eef3ef96fababd5ade9c39f5317d0495cef9a0f531fe60c5c74cb8d2919be
[INFO] running `"docker" "start" "-a" "7b5eef3ef96fababd5ade9c39f5317d0495cef9a0f531fe60c5c74cb8d2919be"`
[INFO] [stderr]    Compiling term_size v0.3.0
[INFO] [stderr]    Compiling memchr v0.1.11
[INFO] [stderr]    Compiling atty v0.2.3
[INFO] [stderr]    Compiling aho-corasick v0.6.3
[INFO] [stderr]    Compiling thread-id v2.0.0
[INFO] [stderr]    Compiling structopt-derive v0.1.1
[INFO] [stderr]    Compiling thread_local v0.2.7
[INFO] [stderr]    Compiling loggerv v0.4.0
[INFO] [stderr]    Compiling textwrap v0.8.0
[INFO] [stderr]    Compiling aho-corasick v0.5.3
[INFO] [stderr]    Compiling regex v0.2.2
[INFO] [stderr]    Compiling clap v2.26.2
[INFO] [stderr]    Compiling regex v0.1.80
[INFO] [stderr]    Compiling env_logger v0.4.3
[INFO] [stderr]    Compiling structopt v0.1.1
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 48.08s
[INFO] running `"docker" "inspect" "7b5eef3ef96fababd5ade9c39f5317d0495cef9a0f531fe60c5c74cb8d2919be"`
[INFO] running `"docker" "rm" "-f" "7b5eef3ef96fababd5ade9c39f5317d0495cef9a0f531fe60c5c74cb8d2919be"`
[INFO] [stdout] 7b5eef3ef96fababd5ade9c39f5317d0495cef9a0f531fe60c5c74cb8d2919be
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/hayatoito/icfp2006:/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=warn" "-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" "+1.37.0" "test" "--frozen" "--no-run"`
[INFO] [stdout] 6414c025dc3b4822bda6d878271cc69445ae2fade39867a30094ef8cd02de050
[INFO] running `"docker" "start" "-a" "6414c025dc3b4822bda6d878271cc69445ae2fade39867a30094ef8cd02de050"`
[INFO] [stderr]    Compiling 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]     Finished dev [unoptimized + debuginfo] target(s) in 1.56s
[INFO] running `"docker" "inspect" "6414c025dc3b4822bda6d878271cc69445ae2fade39867a30094ef8cd02de050"`
[INFO] running `"docker" "rm" "-f" "6414c025dc3b4822bda6d878271cc69445ae2fade39867a30094ef8cd02de050"`
[INFO] [stdout] 6414c025dc3b4822bda6d878271cc69445ae2fade39867a30094ef8cd02de050
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-5/1.37.0:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/1.37.0/gh/hayatoito/icfp2006:/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=warn" "-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" "+1.37.0" "test" "--frozen"`
[INFO] [stdout] bf21a994a2f0ccc16aa7501cd955d6dbeead084a84170d64ebe581837000508f
[INFO] running `"docker" "start" "-a" "bf21a994a2f0ccc16aa7501cd955d6dbeead084a84170d64ebe581837000508f"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.04s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/icfp2006-63ebd1de0d756412
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/icfp2006-d901cb30f6ecaca0
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/task-620cdcf8978e1332
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/um-287c960032a1c669
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]    Doc-tests icfp2006
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "bf21a994a2f0ccc16aa7501cd955d6dbeead084a84170d64ebe581837000508f"`
[INFO] running `"docker" "rm" "-f" "bf21a994a2f0ccc16aa7501cd955d6dbeead084a84170d64ebe581837000508f"`
[INFO] [stdout] bf21a994a2f0ccc16aa7501cd955d6dbeead084a84170d64ebe581837000508f