[INFO] cloning repository https://github.com/LogFlames/book-shake
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/LogFlames/book-shake" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLogFlames%2Fbook-shake", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLogFlames%2Fbook-shake'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b9da2eb3b36e1e39ae3b76a5bf22ca0b0fa7be3f
[INFO] checking LogFlames/book-shake against try#b1f2594eac607c1f051534800237eeedb5590a49 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FLogFlames%2Fbook-shake" "/workspace/builds/worker-7-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/LogFlames/book-shake
[INFO] finished tweaking git repo https://github.com/LogFlames/book-shake
[INFO] tweaked toml for git repo https://github.com/LogFlames/book-shake written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/LogFlames/book-shake on toolchain b1f2594eac607c1f051534800237eeedb5590a49
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/LogFlames/book-shake already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 51bf0a622b2222a173b94d35fb3dbffad8ebdb95d665f8b3ddf6e1c6eb5681b1
[INFO] running `Command { std: "docker" "start" "-a" "51bf0a622b2222a173b94d35fb3dbffad8ebdb95d665f8b3ddf6e1c6eb5681b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "51bf0a622b2222a173b94d35fb3dbffad8ebdb95d665f8b3ddf6e1c6eb5681b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "51bf0a622b2222a173b94d35fb3dbffad8ebdb95d665f8b3ddf6e1c6eb5681b1", kill_on_drop: false }`
[INFO] [stdout] 51bf0a622b2222a173b94d35fb3dbffad8ebdb95d665f8b3ddf6e1c6eb5681b1
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/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=forbid" "-e" "RUSTDOCFLAGS=--cap-lints=forbid" "-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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+b1f2594eac607c1f051534800237eeedb5590a49" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 224b90e25750d3f086f0f07caf87fe0fff6913e0176c24999aadd186df7abf09
[INFO] running `Command { std: "docker" "start" "-a" "224b90e25750d3f086f0f07caf87fe0fff6913e0176c24999aadd186df7abf09", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.102
[INFO] [stderr]    Compiling crossbeam-utils v0.8.5
[INFO] [stderr]    Compiling crossbeam-epoch v0.9.5
[INFO] [stderr]    Compiling getrandom v0.1.16
[INFO] [stderr]    Compiling rayon-core v1.9.1
[INFO] [stderr]    Compiling memoffset v0.6.4
[INFO] [stderr]    Compiling rayon v1.5.1
[INFO] [stderr]     Checking ppv-lite86 v0.2.10
[INFO] [stderr]     Checking either v1.6.1
[INFO] [stderr]     Checking crossbeam-channel v0.5.1
[INFO] [stderr]     Checking crossbeam-deque v0.8.1
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rand_core v0.5.1
[INFO] [stderr]     Checking rand_chacha v0.2.2
[INFO] [stderr]     Checking rand v0.7.3
[INFO] [stderr]     Checking book-shake v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `std::todo`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::todo;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::todo`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::todo;
[INFO] [stdout]   |     ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let mut pool: Vec<BookAssignment> = vec![BookAssignment::new(vec![0, 1, 2, 3]), BookAssignment::new(vec![3, 0, 1, 2])];
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `person_count`
[INFO] [stdout]   --> src/main.rs:63:25
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn generate_random_pool(person_count: usize, books: Vec<(u32, u32)>, pool_size: u32) -> Vec<BookAssignment> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_person_count`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `books`
[INFO] [stdout]   --> src/main.rs:63:46
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn generate_random_pool(person_count: usize, books: Vec<(u32, u32)>, pool_size: u32) -> Vec<BookAssignment> {
[INFO] [stdout]    |                                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_books`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pool_size`
[INFO] [stdout]   --> src/main.rs:63:70
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn generate_random_pool(person_count: usize, books: Vec<(u32, u32)>, pool_size: u32) -> Vec<BookAssignment> {
[INFO] [stdout]    |                                                                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pool_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let mut book_distance: Vec<usize> = Vec::with_capacity(book_assignment.assignments.len());
[INFO] [stdout]    |         ----^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `book_distance`
[INFO] [stdout]   --> src/main.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let mut book_distance: Vec<usize> = Vec::with_capacity(book_assignment.assignments.len());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_book_distance`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:64:9
[INFO] [stdout]    |
[INFO] [stdout] 64 |     let mut pool: Vec<BookAssignment> = vec![BookAssignment::new(vec![0, 1, 2, 3]), BookAssignment::new(vec![3, 0, 1, 2])];
[INFO] [stdout]    |         ----^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `person_count`
[INFO] [stdout]   --> src/main.rs:63:25
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn generate_random_pool(person_count: usize, books: Vec<(u32, u32)>, pool_size: u32) -> Vec<BookAssignment> {
[INFO] [stdout]    |                         ^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_person_count`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `books`
[INFO] [stdout]   --> src/main.rs:63:46
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn generate_random_pool(person_count: usize, books: Vec<(u32, u32)>, pool_size: u32) -> Vec<BookAssignment> {
[INFO] [stdout]    |                                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_books`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `pool_size`
[INFO] [stdout]   --> src/main.rs:63:70
[INFO] [stdout]    |
[INFO] [stdout] 63 | fn generate_random_pool(person_count: usize, books: Vec<(u32, u32)>, pool_size: u32) -> Vec<BookAssignment> {
[INFO] [stdout]    |                                                                      ^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_pool_size`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/main.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let mut book_distance: Vec<usize> = Vec::with_capacity(book_assignment.assignments.len());
[INFO] [stdout]    |         ----^^^^^^^^^^^^^
[INFO] [stdout]    |         |
[INFO] [stdout]    |         help: remove this `mut`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `book_distance`
[INFO] [stdout]   --> src/main.rs:91:9
[INFO] [stdout]    |
[INFO] [stdout] 91 |     let mut book_distance: Vec<usize> = Vec::with_capacity(book_assignment.assignments.len());
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^ help: if this is intentional, prefix it with an underscore: `_book_distance`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 6.36s
[INFO] running `Command { std: "docker" "inspect" "224b90e25750d3f086f0f07caf87fe0fff6913e0176c24999aadd186df7abf09", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "224b90e25750d3f086f0f07caf87fe0fff6913e0176c24999aadd186df7abf09", kill_on_drop: false }`
[INFO] [stdout] 224b90e25750d3f086f0f07caf87fe0fff6913e0176c24999aadd186df7abf09
