Dec 19 05:30:36.232 INFO checking wismer/caesar-cipher against try#e70472fc501b855c9080f3772432c10fe20b8866 for pr-56955
Dec 19 05:30:36.232 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/try#e70472fc501b855c9080f3772432c10fe20b8866:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/try#e70472fc501b855c9080f3772432c10fe20b8866/gh/wismer/caesar-cipher:/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" "+e70472fc501b855c9080f3772432c10fe20b8866-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 05:30:36.750 INFO [stdout] 707b164d61d2db707a8615b9dd77e640afc2f94b1f0aa8c6bd659227aebd1a9d
Dec 19 05:30:36.753 INFO running `"docker" "start" "-a" "707b164d61d2db707a8615b9dd77e640afc2f94b1f0aa8c6bd659227aebd1a9d"`
Dec 19 05:30:39.328 INFO [stderr]     Checking caesar-cipher v0.1.0 (/opt/crater/workdir)
Dec 19 05:30:39.482 INFO [stderr] warning: unused import: `std::io`
Dec 19 05:30:39.482 INFO [stderr]  --> src/euler/euler.rs:1:5
Dec 19 05:30:39.482 INFO [stderr]   |
Dec 19 05:30:39.482 INFO [stderr] 1 | use std::io;
Dec 19 05:30:39.482 INFO [stderr]   |     ^^^^^^^
Dec 19 05:30:39.500 INFO [stderr]   |
Dec 19 05:30:39.500 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 05:30:39.500 INFO [stderr] 
Dec 19 05:30:39.548 INFO [stderr] warning: unused import: `std::io`
Dec 19 05:30:39.548 INFO [stderr]  --> src/euler/euler.rs:1:5
Dec 19 05:30:39.548 INFO [stderr]   |
Dec 19 05:30:39.548 INFO [stderr] 1 | use std::io;
Dec 19 05:30:39.548 INFO [stderr]   |     ^^^^^^^
Dec 19 05:30:39.548 INFO [stderr]   |
Dec 19 05:30:39.548 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 05:30:39.548 INFO [stderr] 
Dec 19 05:30:39.577 INFO [stderr] warning: unused variable: `remainder`
Dec 19 05:30:39.577 INFO [stderr]   --> src/euler/euler.rs:40:24
Dec 19 05:30:39.577 INFO [stderr]    |
Dec 19 05:30:39.577 INFO [stderr] 40 | fn calculate_remainder(remainder: &mut i32) {
Dec 19 05:30:39.577 INFO [stderr]    |                        ^^^^^^^^^ help: consider using `_remainder` instead
Dec 19 05:30:39.577 INFO [stderr]    |
Dec 19 05:30:39.584 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 05:30:39.584 INFO [stderr] 
Dec 19 05:30:39.604 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:30:39.604 INFO [stderr]   --> src/euler/euler.rs:16:9
Dec 19 05:30:39.604 INFO [stderr]    |
Dec 19 05:30:39.604 INFO [stderr] 16 |     let mut total_number = 0u64;
Dec 19 05:30:39.604 INFO [stderr]    |         ----^^^^^^^^^^^^
Dec 19 05:30:39.604 INFO [stderr]    |         |
Dec 19 05:30:39.605 INFO [stderr]    |         help: remove this `mut`
Dec 19 05:30:39.605 INFO [stderr]    |
Dec 19 05:30:39.605 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 05:30:39.605 INFO [stderr] 
Dec 19 05:30:39.606 INFO [stderr] warning: variant is never constructed: `Neither`
Dec 19 05:30:39.606 INFO [stderr]  --> src/main.rs:6:5
Dec 19 05:30:39.606 INFO [stderr]   |
Dec 19 05:30:39.607 INFO [stderr] 6 |     Neither
Dec 19 05:30:39.607 INFO [stderr]   |     ^^^^^^^
Dec 19 05:30:39.607 INFO [stderr]   |
Dec 19 05:30:39.607 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 05:30:39.607 INFO [stderr] 
Dec 19 05:30:39.608 INFO [stderr] warning: function is never used: `calculate_remainder`
Dec 19 05:30:39.608 INFO [stderr]   --> src/euler/euler.rs:40:1
Dec 19 05:30:39.608 INFO [stderr]    |
Dec 19 05:30:39.608 INFO [stderr] 40 | fn calculate_remainder(remainder: &mut i32) {
Dec 19 05:30:39.609 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:30:39.609 INFO [stderr] 
Dec 19 05:30:39.609 INFO [stderr] warning: function is never used: `line_total`
Dec 19 05:30:39.609 INFO [stderr]   --> src/euler/euler.rs:44:1
Dec 19 05:30:39.609 INFO [stderr]    |
Dec 19 05:30:39.610 INFO [stderr] 44 | fn line_total(line: &str) -> u64 {
Dec 19 05:30:39.610 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:30:39.610 INFO [stderr] 
Dec 19 05:30:39.624 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 05:30:39.624 INFO [stderr]   --> src/euler/euler.rs:14:5
Dec 19 05:30:39.625 INFO [stderr]    |
Dec 19 05:30:39.625 INFO [stderr] 14 |     file.read_to_string(&mut contents);
Dec 19 05:30:39.625 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:30:39.625 INFO [stderr]    |
Dec 19 05:30:39.625 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 05:30:39.626 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 05:30:39.626 INFO [stderr] 
Dec 19 05:30:39.644 INFO [stderr] warning: unused variable: `remainder`
Dec 19 05:30:39.645 INFO [stderr]   --> src/euler/euler.rs:40:24
Dec 19 05:30:39.645 INFO [stderr]    |
Dec 19 05:30:39.645 INFO [stderr] 40 | fn calculate_remainder(remainder: &mut i32) {
Dec 19 05:30:39.645 INFO [stderr]    |                        ^^^^^^^^^ help: consider using `_remainder` instead
Dec 19 05:30:39.645 INFO [stderr]    |
Dec 19 05:30:39.646 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 05:30:39.646 INFO [stderr] 
Dec 19 05:30:39.689 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:30:39.689 INFO [stderr]   --> src/euler/euler.rs:16:9
Dec 19 05:30:39.689 INFO [stderr]    |
Dec 19 05:30:39.690 INFO [stderr] 16 |     let mut total_number = 0u64;
Dec 19 05:30:39.690 INFO [stderr]    |         ----^^^^^^^^^^^^
Dec 19 05:30:39.690 INFO [stderr]    |         |
Dec 19 05:30:39.690 INFO [stderr]    |         help: remove this `mut`
Dec 19 05:30:39.690 INFO [stderr]    |
Dec 19 05:30:39.691 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 05:30:39.691 INFO [stderr] 
Dec 19 05:30:39.691 INFO [stderr] warning: variant is never constructed: `Neither`
Dec 19 05:30:39.691 INFO [stderr]  --> src/main.rs:6:5
Dec 19 05:30:39.691 INFO [stderr]   |
Dec 19 05:30:39.691 INFO [stderr] 6 |     Neither
Dec 19 05:30:39.692 INFO [stderr]   |     ^^^^^^^
Dec 19 05:30:39.692 INFO [stderr]   |
Dec 19 05:30:39.692 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 05:30:39.692 INFO [stderr] 
Dec 19 05:30:39.692 INFO [stderr] warning: function is never used: `calculate_remainder`
Dec 19 05:30:39.692 INFO [stderr]   --> src/euler/euler.rs:40:1
Dec 19 05:30:39.693 INFO [stderr]    |
Dec 19 05:30:39.693 INFO [stderr] 40 | fn calculate_remainder(remainder: &mut i32) {
Dec 19 05:30:39.693 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:30:39.693 INFO [stderr] 
Dec 19 05:30:39.693 INFO [stderr] warning: function is never used: `line_total`
Dec 19 05:30:39.693 INFO [stderr]   --> src/euler/euler.rs:44:1
Dec 19 05:30:39.694 INFO [stderr]    |
Dec 19 05:30:39.694 INFO [stderr] 44 | fn line_total(line: &str) -> u64 {
Dec 19 05:30:39.694 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:30:39.694 INFO [stderr] 
Dec 19 05:30:39.704 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 05:30:39.705 INFO [stderr]   --> src/euler/euler.rs:14:5
Dec 19 05:30:39.705 INFO [stderr]    |
Dec 19 05:30:39.705 INFO [stderr] 14 |     file.read_to_string(&mut contents);
Dec 19 05:30:39.705 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:30:39.705 INFO [stderr]    |
Dec 19 05:30:39.705 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 05:30:39.706 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 05:30:39.706 INFO [stderr] 
Dec 19 05:30:39.757 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
Dec 19 05:30:40.504 INFO running `"docker" "inspect" "707b164d61d2db707a8615b9dd77e640afc2f94b1f0aa8c6bd659227aebd1a9d"`
Dec 19 05:30:40.894 INFO running `"docker" "rm" "-f" "707b164d61d2db707a8615b9dd77e640afc2f94b1f0aa8c6bd659227aebd1a9d"`
Dec 19 05:30:41.212 INFO [stdout] 707b164d61d2db707a8615b9dd77e640afc2f94b1f0aa8c6bd659227aebd1a9d