Dec 19 09:35:19.173 INFO checking ryota-sakamoto/scala against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 09:35:19.173 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-0/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/ryota-sakamoto/scala:/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 09:35:19.688 INFO [stdout] bdfcda11738b26051219982235b6ab1473e229186b14e54f1836ff8051303d7c
Dec 19 09:35:19.690 INFO running `"docker" "start" "-a" "bdfcda11738b26051219982235b6ab1473e229186b14e54f1836ff8051303d7c"`
Dec 19 09:35:21.240 INFO [stderr]     Checking scala v0.1.0 (/opt/crater/workdir)
Dec 19 09:35:22.132 INFO [stderr] warning: unused `#[macro_use]` import
Dec 19 09:35:22.132 INFO [stderr]  --> src/main.rs:1:1
Dec 19 09:35:22.132 INFO [stderr]   |
Dec 19 09:35:22.132 INFO [stderr] 1 | #[macro_use]
Dec 19 09:35:22.132 INFO [stderr]   | ^^^^^^^^^^^^
Dec 19 09:35:22.132 INFO [stderr]   |
Dec 19 09:35:22.132 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 09:35:22.132 INFO [stderr] 
Dec 19 09:35:22.172 INFO [stderr] warning: unused `#[macro_use]` import
Dec 19 09:35:22.172 INFO [stderr]  --> src/main.rs:1:1
Dec 19 09:35:22.172 INFO [stderr]   |
Dec 19 09:35:22.172 INFO [stderr] 1 | #[macro_use]
Dec 19 09:35:22.172 INFO [stderr]   | ^^^^^^^^^^^^
Dec 19 09:35:22.172 INFO [stderr]   |
Dec 19 09:35:22.172 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 09:35:22.172 INFO [stderr] 
Dec 19 09:35:22.209 INFO [stderr] warning: function is never used: `e1`
Dec 19 09:35:22.209 INFO [stderr]   --> src/main.rs:27:1
Dec 19 09:35:22.209 INFO [stderr]    |
Dec 19 09:35:22.209 INFO [stderr] 27 | fn e1(n: u64) -> Either<String, String> {
Dec 19 09:35:22.209 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 09:35:22.228 INFO [stderr]    |
Dec 19 09:35:22.228 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 09:35:22.228 INFO [stderr] 
Dec 19 09:35:22.264 INFO [stderr] warning: function is never used: `e1`
Dec 19 09:35:22.264 INFO [stderr]   --> src/main.rs:27:1
Dec 19 09:35:22.264 INFO [stderr]    |
Dec 19 09:35:22.264 INFO [stderr] 27 | fn e1(n: u64) -> Either<String, String> {
Dec 19 09:35:22.264 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 09:35:22.264 INFO [stderr]    |
Dec 19 09:35:22.264 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 19 09:35:22.264 INFO [stderr] 
Dec 19 09:35:22.484 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.28s
Dec 19 09:35:23.038 INFO running `"docker" "inspect" "bdfcda11738b26051219982235b6ab1473e229186b14e54f1836ff8051303d7c"`
Dec 19 09:35:23.374 INFO running `"docker" "rm" "-f" "bdfcda11738b26051219982235b6ab1473e229186b14e54f1836ff8051303d7c"`
Dec 19 09:35:23.772 INFO [stdout] bdfcda11738b26051219982235b6ab1473e229186b14e54f1836ff8051303d7c