[INFO] updating cached repository yminachi/rust-katas
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/yminachi/rust-katas
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/yminachi/rust-katas" "work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/yminachi/rust-katas"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/yminachi/rust-katas'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/yminachi/rust-katas" "work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/yminachi/rust-katas"`
[INFO] [stderr] Cloning into 'work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/yminachi/rust-katas'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 4ac6afe057837b7d9b77176fc5f18648bfd8ddb3
[INFO] sha for GitHub repo yminachi/rust-katas: 4ac6afe057837b7d9b77176fc5f18648bfd8ddb3
[INFO] validating manifest of yminachi/rust-katas on toolchain master#60960a260f7b5c695fd0717311d72ce62dd4eb43
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of yminachi/rust-katas on toolchain try#266783e4e09e4e9d5307c1c8e695659c58bbcac7
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing yminachi/rust-katas
[INFO] finished frobbing yminachi/rust-katas
[INFO] frobbed toml for yminachi/rust-katas written to work/ex/pr-63376/sources/master#60960a260f7b5c695fd0717311d72ce62dd4eb43/gh/yminachi/rust-katas/Cargo.toml
[INFO] started frobbing yminachi/rust-katas
[INFO] finished frobbing yminachi/rust-katas
[INFO] frobbed toml for yminachi/rust-katas written to work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/yminachi/rust-katas/Cargo.toml
[INFO] crate yminachi/rust-katas already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+60960a260f7b5c695fd0717311d72ce62dd4eb43-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking yminachi/rust-katas against try#266783e4e09e4e9d5307c1c8e695659c58bbcac7 for pr-63376
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-63376/worker-0/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-63376/sources/try#266783e4e09e4e9d5307c1c8e695659c58bbcac7/gh/yminachi/rust-katas:/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" "+266783e4e09e4e9d5307c1c8e695659c58bbcac7-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 1b0d7f47f9b16c99fe737c88deaebd8f631527816f2dc9df2ce7f85164adb540
[INFO] running `"docker" "start" "-a" "1b0d7f47f9b16c99fe737c88deaebd8f631527816f2dc9df2ce7f85164adb540"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking rust-katas v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: field is never used: `hourly_rate`
[INFO] [stderr]  --> src/babysitter.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     hourly_rate: u32,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `hour_rate_ends`
[INFO] [stderr]  --> src/babysitter.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     hour_rate_ends: u32
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `calculate_total_sitter_payment`
[INFO] [stderr]   --> src/babysitter.rs:10:1
[INFO] [stderr]    |
[INFO] [stderr] 10 | pub fn calculate_total_sitter_payment(start_time: u32, end_time: u32, rates: &[Rate]) -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sort_rates_by_end_time`
[INFO] [stderr]   --> src/babysitter.rs:30:1
[INFO] [stderr]    |
[INFO] [stderr] 30 | fn sort_rates_by_end_time(rates: &[Rate]) -> Vec<Rate> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hour_including_next_day`
[INFO] [stderr]   --> src/babysitter.rs:41:1
[INFO] [stderr]    |
[INFO] [stderr] 41 | fn hour_including_next_day(hour: u32) -> u32 {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `validate_rate_coverage`
[INFO] [stderr]   --> src/babysitter.rs:45:1
[INFO] [stderr]    |
[INFO] [stderr] 45 | fn validate_rate_coverage(current_hour: u32, effective_end_time: u32) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `validate_start_end_times`
[INFO] [stderr]   --> src/babysitter.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn validate_start_end_times(start_time: u32, end_time: u32) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Pencil`
[INFO] [stderr]  --> src/pencil.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | struct Pencil {
[INFO] [stderr]   | ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/pencil.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn new(max_durability: u32, length: u32, eraser_durability: u32) -> Pencil {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `write`
[INFO] [stderr]   --> src/pencil.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn write(&mut self, string: String) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `sharpen`
[INFO] [stderr]   --> src/pencil.rs:36:5
[INFO] [stderr]    |
[INFO] [stderr] 36 |     pub fn sharpen(&mut self) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `erase`
[INFO] [stderr]   --> src/pencil.rs:43:5
[INFO] [stderr]    |
[INFO] [stderr] 43 |     pub fn erase(&mut self, word: String) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.68s
[INFO] running `"docker" "inspect" "1b0d7f47f9b16c99fe737c88deaebd8f631527816f2dc9df2ce7f85164adb540"`
[INFO] running `"docker" "rm" "-f" "1b0d7f47f9b16c99fe737c88deaebd8f631527816f2dc9df2ce7f85164adb540"`
[INFO] [stdout] 1b0d7f47f9b16c99fe737c88deaebd8f631527816f2dc9df2ce7f85164adb540