Dec 17 16:19:12.293 INFO checking ryota-sakamoto/scala against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 17 16:19:12.293 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-3/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 17 16:19:12.775 INFO [stdout] ada2a0e1afca0bc8c0fdc6aff7a41fe603233948e70c8fa2451b495f2b6dc63a
Dec 17 16:19:12.784 INFO running `"docker" "start" "-a" "ada2a0e1afca0bc8c0fdc6aff7a41fe603233948e70c8fa2451b495f2b6dc63a"`
Dec 17 16:19:14.897 INFO [stderr]     Checking scala v0.1.0 (/opt/crater/workdir)
Dec 17 16:19:15.542 INFO [stderr] warning: unused `#[macro_use]` import
Dec 17 16:19:15.542 INFO [stderr]  --> src/main.rs:1:1
Dec 17 16:19:15.542 INFO [stderr]   |
Dec 17 16:19:15.542 INFO [stderr] 1 | #[macro_use]
Dec 17 16:19:15.542 INFO [stderr]   | ^^^^^^^^^^^^
Dec 17 16:19:15.542 INFO [stderr]   |
Dec 17 16:19:15.542 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 16:19:15.542 INFO [stderr] 
Dec 17 16:19:15.542 INFO [stderr] warning: unused `#[macro_use]` import
Dec 17 16:19:15.543 INFO [stderr]  --> src/main.rs:1:1
Dec 17 16:19:15.543 INFO [stderr]   |
Dec 17 16:19:15.543 INFO [stderr] 1 | #[macro_use]
Dec 17 16:19:15.544 INFO [stderr]   | ^^^^^^^^^^^^
Dec 17 16:19:15.544 INFO [stderr]   |
Dec 17 16:19:15.544 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 17 16:19:15.544 INFO [stderr] 
Dec 17 16:19:15.641 INFO [stderr] warning: function is never used: `e1`
Dec 17 16:19:15.641 INFO [stderr]   --> src/main.rs:27:1
Dec 17 16:19:15.641 INFO [stderr]    |
Dec 17 16:19:15.641 INFO [stderr] 27 | fn e1(n: u64) -> Either<String, String> {
Dec 17 16:19:15.642 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 16:19:15.642 INFO [stderr]    |
Dec 17 16:19:15.642 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 16:19:15.642 INFO [stderr] 
Dec 17 16:19:15.647 INFO [stderr] warning: function is never used: `e1`
Dec 17 16:19:15.647 INFO [stderr]   --> src/main.rs:27:1
Dec 17 16:19:15.647 INFO [stderr]    |
Dec 17 16:19:15.647 INFO [stderr] 27 | fn e1(n: u64) -> Either<String, String> {
Dec 17 16:19:15.648 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 17 16:19:15.648 INFO [stderr]    |
Dec 17 16:19:15.648 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 17 16:19:15.648 INFO [stderr] 
Dec 17 16:19:15.773 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.91s
Dec 17 16:19:17.465 INFO running `"docker" "inspect" "ada2a0e1afca0bc8c0fdc6aff7a41fe603233948e70c8fa2451b495f2b6dc63a"`
Dec 17 16:19:17.838 INFO running `"docker" "rm" "-f" "ada2a0e1afca0bc8c0fdc6aff7a41fe603233948e70c8fa2451b495f2b6dc63a"`
Dec 17 16:19:18.156 INFO [stdout] ada2a0e1afca0bc8c0fdc6aff7a41fe603233948e70c8fa2451b495f2b6dc63a