[INFO] updating cached repository zolkko/rust-katas
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/zolkko/rust-katas
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/zolkko/rust-katas" "work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/zolkko/rust-katas"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/zolkko/rust-katas'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/zolkko/rust-katas" "work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/zolkko/rust-katas"`
[INFO] [stderr] Cloning into 'work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/zolkko/rust-katas'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 19d81f9122deee2ecc15d139475374b6f940d79c
[INFO] sha for GitHub repo zolkko/rust-katas: 19d81f9122deee2ecc15d139475374b6f940d79c
[INFO] validating manifest of zolkko/rust-katas on toolchain master#435236b8877cdb98c82eaebfb7887782277265c5
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of zolkko/rust-katas on toolchain try#b5c7f157c20453dde8d47371abe73b32351b4e7f
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing zolkko/rust-katas
[INFO] finished frobbing zolkko/rust-katas
[INFO] frobbed toml for zolkko/rust-katas written to work/ex/pr-62849/sources/master#435236b8877cdb98c82eaebfb7887782277265c5/gh/zolkko/rust-katas/Cargo.toml
[INFO] started frobbing zolkko/rust-katas
[INFO] finished frobbing zolkko/rust-katas
[INFO] frobbed toml for zolkko/rust-katas written to work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/zolkko/rust-katas/Cargo.toml
[INFO] crate zolkko/rust-katas already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+435236b8877cdb98c82eaebfb7887782277265c5-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] checking zolkko/rust-katas against try#b5c7f157c20453dde8d47371abe73b32351b4e7f for pr-62849
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-62849/worker-3/try#b5c7f157c20453dde8d47371abe73b32351b4e7f:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-62849/sources/try#b5c7f157c20453dde8d47371abe73b32351b4e7f/gh/zolkko/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" "+b5c7f157c20453dde8d47371abe73b32351b4e7f-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 0b08983d87d3e743036f421fac50227342a7447b1696e68adb8b675b1ea9e2ff
[INFO] running `"docker" "start" "-a" "0b08983d87d3e743036f421fac50227342a7447b1696e68adb8b675b1ea9e2ff"`
[INFO] [stderr]    Compiling rust-katas v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: struct is never constructed: `ToplistWithoutFilter`
[INFO] [stderr]   --> src/lib.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | struct ToplistWithoutFilter {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ToplistWithFilter`
[INFO] [stderr]   --> src/lib.rs:40:1
[INFO] [stderr]    |
[INFO] [stderr] 40 | struct ToplistWithFilter {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]   --> src/insertion_sort.rs:13:15
[INFO] [stderr]    |
[INFO] [stderr] 13 |         while index >= 0 && array[index] > array[index + 1] {
[INFO] [stderr]    |               ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::stdin`
[INFO] [stderr]  --> src/merge_arrays.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::stdin;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr] warning: unused import: `std::io::stdin`
[INFO] [stderr]  --> src/merge_arrays.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::stdin;
[INFO] [stderr]   |     ^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arrays`
[INFO] [stderr]  --> src/merge_arrays.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn merge_arrays(arrays: &[&[i32]]) -> Vec<i32> {
[INFO] [stderr]   |                 ^^^^^^ help: consider prefixing with an underscore: `_arrays`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `merge_arrays`
[INFO] [stderr]  --> src/merge_arrays.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn merge_arrays(arrays: &[&[i32]]) -> Vec<i32> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]  --> src/read_ints.rs:5:22
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let input = line.trim_right();
[INFO] [stderr]   |                      ^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `arrays`
[INFO] [stderr]  --> src/merge_arrays.rs:4:17
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn merge_arrays(arrays: &[&[i32]]) -> Vec<i32> {
[INFO] [stderr]   |                 ^^^^^^ help: consider prefixing with an underscore: `_arrays`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `merge_arrays`
[INFO] [stderr]  --> src/merge_arrays.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | fn merge_arrays(arrays: &[&[i32]]) -> Vec<i32> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ToplistWithoutFilter`
[INFO] [stderr]   --> src/lib.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | struct ToplistWithoutFilter {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `ToplistWithFilter`
[INFO] [stderr]   --> src/lib.rs:40:1
[INFO] [stderr]    |
[INFO] [stderr] 40 | struct ToplistWithFilter {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `size` is never read
[INFO] [stderr]   --> src/print_exec.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let mut size = 0usize;
[INFO] [stderr]    |             ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: comparison is useless due to type limits
[INFO] [stderr]   --> src/insertion_sort.rs:13:15
[INFO] [stderr]    |
[INFO] [stderr] 13 |         while index >= 0 && array[index] > array[index + 1] {
[INFO] [stderr]    |               ^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_comparisons)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: value assigned to `size` is never read
[INFO] [stderr]   --> src/print_exec.rs:32:13
[INFO] [stderr]    |
[INFO] [stderr] 32 |     let mut size = 0usize;
[INFO] [stderr]    |             ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_assignments)]` on by default
[INFO] [stderr]    = help: maybe it is overwritten before being read?
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/print_exec.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let mut read_buf: &mut [u8] = &mut [0u8; 1024];
[INFO] [stderr]    |         ----^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/print_exec.rs:31:9
[INFO] [stderr]    |
[INFO] [stderr] 31 |     let mut read_buf: &mut [u8] = &mut [0u8; 1024];
[INFO] [stderr]    |         ----^^^^^^^^
[INFO] [stderr]    |         |
[INFO] [stderr]    |         help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: use of deprecated item 'core::str::<impl str>::trim_right': superseded by `trim_end`
[INFO] [stderr]  --> src/read_ints.rs:5:22
[INFO] [stderr]   |
[INFO] [stderr] 5 |     let input = line.trim_right();
[INFO] [stderr]   |                      ^^^^^^^^^^ help: replace the use of the deprecated item: `trim_end`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(deprecated)]` on by default
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.69s
[INFO] running `"docker" "inspect" "0b08983d87d3e743036f421fac50227342a7447b1696e68adb8b675b1ea9e2ff"`
[INFO] running `"docker" "rm" "-f" "0b08983d87d3e743036f421fac50227342a7447b1696e68adb8b675b1ea9e2ff"`
[INFO] [stdout] 0b08983d87d3e743036f421fac50227342a7447b1696e68adb8b675b1ea9e2ff