[INFO] cloning repository https://github.com/Homare3/my_library
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Homare3/my_library" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHomare3%2Fmy_library", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHomare3%2Fmy_library'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 808dd9aa2b567eaf3bfcd1be0986e3ca96cd9d28
[INFO] checking Homare3/my_library against try#51de2e90f91fdec6cf64ff542a4e15b9c177a797 for pr-147294
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FHomare3%2Fmy_library" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/Homare3/my_library
[INFO] finished tweaking git repo https://github.com/Homare3/my_library
[INFO] tweaked toml for git repo https://github.com/Homare3/my_library written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/Homare3/my_library on toolchain 51de2e90f91fdec6cf64ff542a4e15b9c177a797
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+51de2e90f91fdec6cf64ff542a4e15b9c177a797" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/Homare3/my_library 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" "+51de2e90f91fdec6cf64ff542a4e15b9c177a797" "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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+51de2e90f91fdec6cf64ff542a4e15b9c177a797" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] b016325e68010a1aa1e51046904f2addf107e9840fc3b900186977133fa59d5a
[INFO] running `Command { std: "docker" "start" "-a" "b016325e68010a1aa1e51046904f2addf107e9840fc3b900186977133fa59d5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b016325e68010a1aa1e51046904f2addf107e9840fc3b900186977133fa59d5a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b016325e68010a1aa1e51046904f2addf107e9840fc3b900186977133fa59d5a", kill_on_drop: false }`
[INFO] [stdout] b016325e68010a1aa1e51046904f2addf107e9840fc3b900186977133fa59d5a
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+51de2e90f91fdec6cf64ff542a4e15b9c177a797" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5061fe78f48b5caecf173166e27d705301e38513b4bb11d740bedff7f168fea1
[INFO] running `Command { std: "docker" "start" "-a" "5061fe78f48b5caecf173166e27d705301e38513b4bb11d740bedff7f168fea1", kill_on_drop: false }`
[INFO] [stderr]     Checking fuzzy-matcher v0.3.7
[INFO] [stderr]     Checking my_library v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `SkimMatcher`
[INFO] [stdout]  --> src/library/bookshelf.rs:2:28
[INFO] [stdout]   |
[INFO] [stdout] 2 | use fuzzy_matcher::{skim::{SkimMatcher, SkimMatcherV2}, FuzzyMatcher};
[INFO] [stdout]   |                            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `fuzzy_matcher::skim::SkimMatcher`: Please use SkimMatcherV2 instead
[INFO] [stdout]  --> src/library/bookshelf.rs:2:28
[INFO] [stdout]   |
[INFO] [stdout] 2 | use fuzzy_matcher::{skim::{SkimMatcher, SkimMatcherV2}, FuzzyMatcher};
[INFO] [stdout]   |                            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `SkimMatcher`
[INFO] [stdout]  --> src/library/bookshelf.rs:2:28
[INFO] [stdout]   |
[INFO] [stdout] 2 | use fuzzy_matcher::{skim::{SkimMatcher, SkimMatcherV2}, FuzzyMatcher};
[INFO] [stdout]   |                            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `fuzzy_matcher::skim::SkimMatcher`: Please use SkimMatcherV2 instead
[INFO] [stdout]  --> src/library/bookshelf.rs:2:28
[INFO] [stdout]   |
[INFO] [stdout] 2 | use fuzzy_matcher::{skim::{SkimMatcher, SkimMatcherV2}, FuzzyMatcher};
[INFO] [stdout]   |                            ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `book`
[INFO] [stdout]   --> src/library/bookshelf.rs:31:35
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn remove_book(&mut self, book: &Book) -> Option<Book> {
[INFO] [stdout]    |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_book`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `author` is never read
[INFO] [stdout]  --> src/library/book.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Book {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 3 |     title: String,
[INFO] [stdout] 4 |     author: String,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Book` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `book`
[INFO] [stdout]   --> src/library/bookshelf.rs:31:35
[INFO] [stdout]    |
[INFO] [stdout] 31 |     pub fn remove_book(&mut self, book: &Book) -> Option<Book> {
[INFO] [stdout]    |                                   ^^^^ help: if this is intentional, prefix it with an underscore: `_book`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `author` is never read
[INFO] [stdout]  --> src/library/book.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Book {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 3 |     title: String,
[INFO] [stdout] 4 |     author: String,
[INFO] [stdout]   |     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Book` has a derived impl for the trait `Debug`, but this is intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.31s
[INFO] running `Command { std: "docker" "inspect" "5061fe78f48b5caecf173166e27d705301e38513b4bb11d740bedff7f168fea1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5061fe78f48b5caecf173166e27d705301e38513b4bb11d740bedff7f168fea1", kill_on_drop: false }`
[INFO] [stdout] 5061fe78f48b5caecf173166e27d705301e38513b4bb11d740bedff7f168fea1