Dec 19 05:30:41.296 INFO checking wismer/caesar-cipher against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 05:30:41.296 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-2/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/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" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 05:30:41.790 INFO [stdout] f3a6296ca83273ea904067f2feefc6067387a734039c2491852cf272d9bf6e5f
Dec 19 05:30:41.792 INFO running `"docker" "start" "-a" "f3a6296ca83273ea904067f2feefc6067387a734039c2491852cf272d9bf6e5f"`
Dec 19 05:30:43.440 INFO [stderr]     Checking caesar-cipher v0.1.0 (/opt/crater/workdir)
Dec 19 05:30:43.651 INFO [stderr] warning: unused import: `std::io`
Dec 19 05:30:43.651 INFO [stderr]  --> src/euler/euler.rs:1:5
Dec 19 05:30:43.652 INFO [stderr]   |
Dec 19 05:30:43.652 INFO [stderr] 1 | use std::io;
Dec 19 05:30:43.652 INFO [stderr]   |     ^^^^^^^
Dec 19 05:30:43.652 INFO [stderr]   |
Dec 19 05:30:43.652 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 05:30:43.652 INFO [stderr] 
Dec 19 05:30:43.716 INFO [stderr] warning: unused import: `std::io`
Dec 19 05:30:43.716 INFO [stderr]  --> src/euler/euler.rs:1:5
Dec 19 05:30:43.716 INFO [stderr]   |
Dec 19 05:30:43.716 INFO [stderr] 1 | use std::io;
Dec 19 05:30:43.716 INFO [stderr]   |     ^^^^^^^
Dec 19 05:30:43.717 INFO [stderr]   |
Dec 19 05:30:43.717 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 19 05:30:43.717 INFO [stderr] 
Dec 19 05:30:43.757 INFO [stderr] warning: unused variable: `remainder`
Dec 19 05:30:43.758 INFO [stderr]   --> src/euler/euler.rs:40:24
Dec 19 05:30:43.758 INFO [stderr]    |
Dec 19 05:30:43.758 INFO [stderr] 40 | fn calculate_remainder(remainder: &mut i32) {
Dec 19 05:30:43.759 INFO [stderr]    |                        ^^^^^^^^^ help: consider using `_remainder` instead
Dec 19 05:30:43.759 INFO [stderr]    |
Dec 19 05:30:43.759 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 05:30:43.759 INFO [stderr] 
Dec 19 05:30:43.796 INFO [stderr] warning: unused variable: `remainder`
Dec 19 05:30:43.796 INFO [stderr]   --> src/euler/euler.rs:40:24
Dec 19 05:30:43.796 INFO [stderr]    |
Dec 19 05:30:43.796 INFO [stderr] 40 | fn calculate_remainder(remainder: &mut i32) {
Dec 19 05:30:43.796 INFO [stderr]    |                        ^^^^^^^^^ help: consider using `_remainder` instead
Dec 19 05:30:43.796 INFO [stderr]    |
Dec 19 05:30:43.796 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 19 05:30:43.796 INFO [stderr] 
Dec 19 05:30:43.802 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:30:43.802 INFO [stderr]   --> src/euler/euler.rs:16:9
Dec 19 05:30:43.802 INFO [stderr]    |
Dec 19 05:30:43.802 INFO [stderr] 16 |     let mut total_number = 0u64;
Dec 19 05:30:43.802 INFO [stderr]    |         ----^^^^^^^^^^^^
Dec 19 05:30:43.802 INFO [stderr]    |         |
Dec 19 05:30:43.802 INFO [stderr]    |         help: remove this `mut`
Dec 19 05:30:43.802 INFO [stderr]    |
Dec 19 05:30:43.802 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 05:30:43.802 INFO [stderr] 
Dec 19 05:30:43.803 INFO [stderr] warning: variant is never constructed: `Neither`
Dec 19 05:30:43.803 INFO [stderr]  --> src/main.rs:6:5
Dec 19 05:30:43.803 INFO [stderr]   |
Dec 19 05:30:43.803 INFO [stderr] 6 |     Neither
Dec 19 05:30:43.803 INFO [stderr]   |     ^^^^^^^
Dec 19 05:30:43.804 INFO [stderr]   |
Dec 19 05:30:43.804 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 05:30:43.804 INFO [stderr] 
Dec 19 05:30:43.804 INFO [stderr] warning: function is never used: `calculate_remainder`
Dec 19 05:30:43.804 INFO [stderr]   --> src/euler/euler.rs:40:1
Dec 19 05:30:43.805 INFO [stderr]    |
Dec 19 05:30:43.805 INFO [stderr] 40 | fn calculate_remainder(remainder: &mut i32) {
Dec 19 05:30:43.805 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:30:43.805 INFO [stderr] 
Dec 19 05:30:43.805 INFO [stderr] warning: function is never used: `line_total`
Dec 19 05:30:43.806 INFO [stderr]   --> src/euler/euler.rs:44:1
Dec 19 05:30:43.806 INFO [stderr]    |
Dec 19 05:30:43.806 INFO [stderr] 44 | fn line_total(line: &str) -> u64 {
Dec 19 05:30:43.806 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:30:43.806 INFO [stderr] 
Dec 19 05:30:43.820 INFO [stderr] warning: variable does not need to be mutable
Dec 19 05:30:43.820 INFO [stderr]   --> src/euler/euler.rs:16:9
Dec 19 05:30:43.821 INFO [stderr]    |
Dec 19 05:30:43.821 INFO [stderr] 16 |     let mut total_number = 0u64;
Dec 19 05:30:43.821 INFO [stderr]    |         ----^^^^^^^^^^^^
Dec 19 05:30:43.821 INFO [stderr]    |         |
Dec 19 05:30:43.822 INFO [stderr]    |         help: remove this `mut`
Dec 19 05:30:43.822 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 05:30:43.822 INFO [stderr]   --> src/euler/euler.rs:14:5
Dec 19 05:30:43.822 INFO [stderr]    |
Dec 19 05:30:43.822 INFO [stderr] 14 |     file.read_to_string(&mut contents);
Dec 19 05:30:43.822 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:30:43.822 INFO [stderr]    |
Dec 19 05:30:43.822 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 05:30:43.822 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 05:30:43.822 INFO [stderr] 
Dec 19 05:30:43.823 INFO [stderr]    |
Dec 19 05:30:43.823 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Dec 19 05:30:43.823 INFO [stderr] 
Dec 19 05:30:43.824 INFO [stderr] warning: variant is never constructed: `Neither`
Dec 19 05:30:43.825 INFO [stderr]  --> src/main.rs:6:5
Dec 19 05:30:43.825 INFO [stderr]   |
Dec 19 05:30:43.825 INFO [stderr] 6 |     Neither
Dec 19 05:30:43.825 INFO [stderr]   |     ^^^^^^^
Dec 19 05:30:43.826 INFO [stderr]   |
Dec 19 05:30:43.826 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 05:30:43.826 INFO [stderr] 
Dec 19 05:30:43.826 INFO [stderr] warning: function is never used: `calculate_remainder`
Dec 19 05:30:43.827 INFO [stderr]   --> src/euler/euler.rs:40:1
Dec 19 05:30:43.827 INFO [stderr]    |
Dec 19 05:30:43.827 INFO [stderr] 40 | fn calculate_remainder(remainder: &mut i32) {
Dec 19 05:30:43.827 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:30:43.828 INFO [stderr] 
Dec 19 05:30:43.828 INFO [stderr] warning: function is never used: `line_total`
Dec 19 05:30:43.828 INFO [stderr]   --> src/euler/euler.rs:44:1
Dec 19 05:30:43.828 INFO [stderr]    |
Dec 19 05:30:43.829 INFO [stderr] 44 | fn line_total(line: &str) -> u64 {
Dec 19 05:30:43.829 INFO [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:30:43.832 INFO [stderr] 
Dec 19 05:30:43.844 INFO [stderr] warning: unused `std::result::Result` that must be used
Dec 19 05:30:43.844 INFO [stderr]   --> src/euler/euler.rs:14:5
Dec 19 05:30:43.845 INFO [stderr]    |
Dec 19 05:30:43.845 INFO [stderr] 14 |     file.read_to_string(&mut contents);
Dec 19 05:30:43.845 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 05:30:43.845 INFO [stderr]    |
Dec 19 05:30:43.846 INFO [stderr]    = note: #[warn(unused_must_use)] on by default
Dec 19 05:30:43.846 INFO [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
Dec 19 05:30:43.846 INFO [stderr] 
Dec 19 05:30:43.869 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.46s
Dec 19 05:30:45.100 INFO running `"docker" "inspect" "f3a6296ca83273ea904067f2feefc6067387a734039c2491852cf272d9bf6e5f"`
Dec 19 05:30:45.350 INFO running `"docker" "rm" "-f" "f3a6296ca83273ea904067f2feefc6067387a734039c2491852cf272d9bf6e5f"`
Dec 19 05:30:45.620 INFO [stdout] f3a6296ca83273ea904067f2feefc6067387a734039c2491852cf272d9bf6e5f