[INFO] updating cached repository ickshonpe/rust-data-structures
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/ickshonpe/rust-data-structures
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/ickshonpe/rust-data-structures" "work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/ickshonpe/rust-data-structures"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/ickshonpe/rust-data-structures'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/ickshonpe/rust-data-structures" "work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/ickshonpe/rust-data-structures"`
[INFO] [stderr] Cloning into 'work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/ickshonpe/rust-data-structures'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] af0bf8f5e24687dad2a324e4518931fdbad50590
[INFO] sha for GitHub repo ickshonpe/rust-data-structures: af0bf8f5e24687dad2a324e4518931fdbad50590
[INFO] validating manifest of ickshonpe/rust-data-structures on toolchain master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of ickshonpe/rust-data-structures on toolchain try#7fea0229842e79db1159ea58ad9a653b288efee9
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing ickshonpe/rust-data-structures
[INFO] finished frobbing ickshonpe/rust-data-structures
[INFO] frobbed toml for ickshonpe/rust-data-structures written to work/ex/pr-57967/sources/master#c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54/gh/ickshonpe/rust-data-structures/Cargo.toml
[INFO] started frobbing ickshonpe/rust-data-structures
[INFO] finished frobbing ickshonpe/rust-data-structures
[INFO] frobbed toml for ickshonpe/rust-data-structures written to work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/ickshonpe/rust-data-structures/Cargo.toml
[INFO] crate ickshonpe/rust-data-structures has a lockfile. skipping
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+c1c3c4e95b69dfeaca5c5db6c622d7f90ad30a54-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing ickshonpe/rust-data-structures against try#7fea0229842e79db1159ea58ad9a653b288efee9 for pr-57967
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/ickshonpe/rust-data-structures:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "build" "--frozen"`
[INFO] [stdout] 6a4db933b5a8303369b820abb1f643f854396f0a47ef0a9d2fb8647789add6a2
[INFO] running `"docker" "start" "-a" "6a4db933b5a8303369b820abb1f643f854396f0a47ef0a9d2fb8647789add6a2"`
[INFO] [stderr]    Compiling data-structures v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/list.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `list::*`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use list::*;
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `merge_sort`
[INFO] [stderr]  --> src/merge_sort.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub fn merge_sort<T: PartialOrd + Copy>(xs: &[T]) -> Vec<T> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `merge`
[INFO] [stderr]   --> src/merge_sort.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn merge<T: PartialOrd + Copy>(mut left: &[T], mut right: &[T]) -> Vec<T> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `id`
[INFO] [stderr]  --> src/tricks.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn id<T>(x: T) -> T {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Link`
[INFO] [stderr]  --> src/list.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | type Link<T> = Option<Box<Node<T>>>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `back`
[INFO] [stderr]   --> src/list.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn back(&mut self) -> &mut Link<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `back_id`
[INFO] [stderr]   --> src/list.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     fn back_id(&mut self) -> &mut Link<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `back_tmp`
[INFO] [stderr]   --> src/list.rs:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 |     fn back_tmp(&mut self) -> &mut Link<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `quick_sort`
[INFO] [stderr]  --> src/quick_sort_slice.rs:5:1
[INFO] [stderr]   |
[INFO] [stderr] 5 | pub fn quick_sort<T: PartialOrd>(data: &mut [T]) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `partition`
[INFO] [stderr]   --> src/quick_sort_slice.rs:13:1
[INFO] [stderr]    |
[INFO] [stderr] 13 | fn partition<T: PartialOrd>(data: &mut [T]) -> usize {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `example`
[INFO] [stderr]   --> src/quick_sort_slice.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub fn example() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `quick_sort`
[INFO] [stderr]  --> src/parallel_quick_sort.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub fn quick_sort<T: PartialOrd + std::marker::Send>(data: &mut [T]) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `split_at_exclusive_mut`
[INFO] [stderr]   --> src/parallel_quick_sort.rs:18:1
[INFO] [stderr]    |
[INFO] [stderr] 18 | pub fn split_at_exclusive_mut<T>(data: &mut [T], p: usize) -> (&mut [T], &mut [T]) {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `partition`
[INFO] [stderr]   --> src/parallel_quick_sort.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | fn partition<T: PartialOrd>(data: &mut [T]) -> usize {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `example`
[INFO] [stderr]   --> src/parallel_quick_sort.rs:39:1
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub fn example() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.56s
[INFO] running `"docker" "inspect" "6a4db933b5a8303369b820abb1f643f854396f0a47ef0a9d2fb8647789add6a2"`
[INFO] running `"docker" "rm" "-f" "6a4db933b5a8303369b820abb1f643f854396f0a47ef0a9d2fb8647789add6a2"`
[INFO] [stdout] 6a4db933b5a8303369b820abb1f643f854396f0a47ef0a9d2fb8647789add6a2
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/ickshonpe/rust-data-structures:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen" "--no-run"`
[INFO] [stdout] de54194b682fc2cd9b08272dff28d9bd26fc040976fa2f4eeb4e9a951b36d5e3
[INFO] running `"docker" "start" "-a" "de54194b682fc2cd9b08272dff28d9bd26fc040976fa2f4eeb4e9a951b36d5e3"`
[INFO] [stderr]    Compiling data-structures v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/list.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `list::*`
[INFO] [stderr]   --> src/main.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 | use list::*;
[INFO] [stderr]    |     ^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `merge_sort`
[INFO] [stderr]  --> src/merge_sort.rs:2:1
[INFO] [stderr]   |
[INFO] [stderr] 2 | pub fn merge_sort<T: PartialOrd + Copy>(xs: &[T]) -> Vec<T> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `merge`
[INFO] [stderr]   --> src/merge_sort.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | pub fn merge<T: PartialOrd + Copy>(mut left: &[T], mut right: &[T]) -> Vec<T> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `id`
[INFO] [stderr]  --> src/tricks.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub fn id<T>(x: T) -> T {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Link`
[INFO] [stderr]  --> src/list.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | type Link<T> = Option<Box<Node<T>>>;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `back`
[INFO] [stderr]   --> src/list.rs:67:5
[INFO] [stderr]    |
[INFO] [stderr] 67 |     fn back(&mut self) -> &mut Link<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `back_id`
[INFO] [stderr]   --> src/list.rs:77:5
[INFO] [stderr]    |
[INFO] [stderr] 77 |     fn back_id(&mut self) -> &mut Link<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `back_tmp`
[INFO] [stderr]   --> src/list.rs:87:5
[INFO] [stderr]    |
[INFO] [stderr] 87 |     fn back_tmp(&mut self) -> &mut Link<T> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `example`
[INFO] [stderr]   --> src/quick_sort_slice.rs:28:1
[INFO] [stderr]    |
[INFO] [stderr] 28 | pub fn example() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `example`
[INFO] [stderr]   --> src/parallel_quick_sort.rs:39:1
[INFO] [stderr]    |
[INFO] [stderr] 39 | pub fn example() {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.09s
[INFO] running `"docker" "inspect" "de54194b682fc2cd9b08272dff28d9bd26fc040976fa2f4eeb4e9a951b36d5e3"`
[INFO] running `"docker" "rm" "-f" "de54194b682fc2cd9b08272dff28d9bd26fc040976fa2f4eeb4e9a951b36d5e3"`
[INFO] [stdout] de54194b682fc2cd9b08272dff28d9bd26fc040976fa2f4eeb4e9a951b36d5e3
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-57967/worker-4/try#7fea0229842e79db1159ea58ad9a653b288efee9:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-57967/sources/try#7fea0229842e79db1159ea58ad9a653b288efee9/gh/ickshonpe/rust-data-structures:/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" "+7fea0229842e79db1159ea58ad9a653b288efee9-alt" "test" "--frozen"`
[INFO] [stdout] c4a71e6cac5b2e41c980c05b2faf6120bb0595a8047be2bff8cd362bdba9d523
[INFO] running `"docker" "start" "-a" "c4a71e6cac5b2e41c980c05b2faf6120bb0595a8047be2bff8cd362bdba9d523"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/data_structures-f6ef5bb456c69db0
[INFO] [stdout] 
[INFO] [stdout] running 9 tests
[INFO] [stdout] test list::test_len ... ok
[INFO] [stdout] test quick_sort_slice::test_1 ... ok
[INFO] [stdout] test quick_sort::test_2 ... ok
[INFO] [stdout] test quick_sort::test_1 ... ok
[INFO] [stdout] test quick_sort_slice::test_2 ... ok
[INFO] [stdout] test parallel_quick_sort::test_2 ... ok
[INFO] [stdout] test parallel_quick_sort::test_1 ... ok
[INFO] [stdout] test list::test_1 ... ok
[INFO] [stdout] test list::test_2 ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 9 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "c4a71e6cac5b2e41c980c05b2faf6120bb0595a8047be2bff8cd362bdba9d523"`
[INFO] running `"docker" "rm" "-f" "c4a71e6cac5b2e41c980c05b2faf6120bb0595a8047be2bff8cd362bdba9d523"`
[INFO] [stdout] c4a71e6cac5b2e41c980c05b2faf6120bb0595a8047be2bff8cd362bdba9d523