[INFO] cloning repository https://github.com/ryota0624/rust_algorithm_picture_book_impl
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/ryota0624/rust_algorithm_picture_book_impl" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryota0624%2Frust_algorithm_picture_book_impl", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryota0624%2Frust_algorithm_picture_book_impl'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d5d0eb89bf4a10233f0ed916d3d7a7dec6fd09dc
[INFO] testing ryota0624/rust_algorithm_picture_book_impl against 1.54.0 for beta-1.55-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fryota0624%2Frust_algorithm_picture_book_impl" "/workspace/builds/worker-30/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-30/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/ryota0624/rust_algorithm_picture_book_impl on toolchain 1.54.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/ryota0624/rust_algorithm_picture_book_impl
[INFO] finished tweaking git repo https://github.com/ryota0624/rust_algorithm_picture_book_impl
[INFO] tweaked toml for git repo https://github.com/ryota0624/rust_algorithm_picture_book_impl written to /workspace/builds/worker-30/source/Cargo.toml
[INFO] crate git repo https://github.com/ryota0624/rust_algorithm_picture_book_impl already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.54.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 032fdfe039f88444cd8cd5195307d4a42c4ff0cae76425fd8a47e5732823c544
[INFO] running `Command { std: "docker" "start" "-a" "032fdfe039f88444cd8cd5195307d4a42c4ff0cae76425fd8a47e5732823c544", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "032fdfe039f88444cd8cd5195307d4a42c4ff0cae76425fd8a47e5732823c544", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "032fdfe039f88444cd8cd5195307d4a42c4ff0cae76425fd8a47e5732823c544", kill_on_drop: false }`
[INFO] [stdout] 032fdfe039f88444cd8cd5195307d4a42c4ff0cae76425fd8a47e5732823c544
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-30/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+1.54.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f1358bde843eb6427cd8597bdd4957f3f79087a0ce9420c459302309acc56845
[INFO] running `Command { std: "docker" "start" "-a" "f1358bde843eb6427cd8597bdd4957f3f79087a0ce9420c459302309acc56845", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling rust_algorithm_picture_book_impl v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `sorter_test`
[INFO] [stdout]  --> src/sort/bubble_sort.rs:2:27
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::sort::{Sorter, sorter_test};
[INFO] [stdout]   |                           ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sorter_test`
[INFO] [stdout]  --> src/sort/selection_sort.rs:2:27
[INFO] [stdout]   |
[INFO] [stdout] 2 | use crate::sort::{Sorter, sorter_test};
[INFO] [stdout]   |                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `sorter_test`
[INFO] [stdout]  --> src/sort/insertion_sort.rs:1:27
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::sort::{Sorter, sorter_test};
[INFO] [stdout]   |                           ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `search_test`
[INFO] [stdout]  --> src/search/liner_search.rs:1:31
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::search::{Searcher, search_test};
[INFO] [stdout]   |                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `search_test`
[INFO] [stdout]  --> src/search/binary_search.rs:1:31
[INFO] [stdout]   |
[INFO] [stdout] 1 | use crate::search::{Searcher, search_test};
[INFO] [stdout]   |                               ^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `base_index`
[INFO] [stdout]  --> src/search/liner_search.rs:8:14
[INFO] [stdout]   |
[INFO] [stdout] 8 |         for (base_index, val) in list.iter().enumerate() {
[INFO] [stdout]   |              ^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_base_index`
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0507]: cannot move out of a shared reference
[INFO] [stdout]   --> src/data_structure/list.rs:12:9
[INFO] [stdout]    |
[INFO] [stdout] 12 |         self.next.as_ref()
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         move occurs because value has type `Option<ListItem<T>>`, which does not implement the `Copy` trait
[INFO] [stdout]    |         help: consider borrowing the `Option`'s content: `self.next.as_ref().as_ref()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing function parameter `n`
[INFO] [stdout]   --> src/data_structure/list.rs:26:31
[INFO] [stdout]    |
[INFO] [stdout] 26 |                 .and_then(|n| n.index_at(i - 1))
[INFO] [stdout]    |                               -^^^^^^^^^^^^^^^^
[INFO] [stdout]    |                               |
[INFO] [stdout]    |                               returns a value referencing data owned by the current function
[INFO] [stdout]    |                               `n` is borrowed here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0507]: cannot move out of a shared reference
[INFO] [stdout]   --> src/data_structure/list.rs:25:13
[INFO] [stdout]    |
[INFO] [stdout] 25 |             self.next.as_ref()
[INFO] [stdout]    |             ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             move occurs because value has type `Option<ListItem<T>>`, which does not implement the `Copy` trait
[INFO] [stdout]    |             help: consider borrowing the `Option`'s content: `self.next.as_ref().as_ref()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0507]: cannot move out of `self.value` which is behind a shared reference
[INFO] [stdout]   --> src/data_structure/list.rs:33:47
[INFO] [stdout]    |
[INFO] [stdout] 33 |             None => Box::new(ListItem{ value: self.value, next: Box::new(None) })
[INFO] [stdout]    |                                               ^^^^^^^^^^ move occurs because `self.value` has type `T`, which does not implement the `Copy` trait
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0507]: cannot move out of a shared reference
[INFO] [stdout]   --> src/data_structure/list.rs:41:9
[INFO] [stdout]    |
[INFO] [stdout] 41 |         self.head.as_ref().map(|h| h.tail_size()).unwrap_or(0)
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         move occurs because value has type `Option<ListItem<T>>`, which does not implement the `Copy` trait
[INFO] [stdout]    |         help: consider borrowing the `Option`'s content: `self.head.as_ref().as_ref()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0515]: cannot return value referencing function parameter `h`
[INFO] [stdout]   --> src/data_structure/list.rs:45:41
[INFO] [stdout]    |
[INFO] [stdout] 45 |         self.head.as_ref().and_then(|h| h.index_at(i))
[INFO] [stdout]    |                                         -^^^^^^^^^^^^
[INFO] [stdout]    |                                         |
[INFO] [stdout]    |                                         returns a value referencing data owned by the current function
[INFO] [stdout]    |                                         `h` is borrowed here
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0507]: cannot move out of a shared reference
[INFO] [stdout]   --> src/data_structure/list.rs:45:9
[INFO] [stdout]    |
[INFO] [stdout] 45 |         self.head.as_ref().and_then(|h| h.index_at(i))
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         move occurs because value has type `Option<ListItem<T>>`, which does not implement the `Copy` trait
[INFO] [stdout]    |         help: consider borrowing the `Option`'s content: `self.head.as_ref().as_ref()`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 7 previous errors; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] Some errors have detailed explanations: E0507, E0515.
[INFO] [stdout] 
[INFO] [stdout] For more information about an error, try `rustc --explain E0507`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `rust_algorithm_picture_book_impl`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "f1358bde843eb6427cd8597bdd4957f3f79087a0ce9420c459302309acc56845", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1358bde843eb6427cd8597bdd4957f3f79087a0ce9420c459302309acc56845", kill_on_drop: false }`
[INFO] [stdout] f1358bde843eb6427cd8597bdd4957f3f79087a0ce9420c459302309acc56845
