[INFO] cloning repository https://github.com/amdRyzen5600X/library_management
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/amdRyzen5600X/library_management" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FamdRyzen5600X%2Flibrary_management", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FamdRyzen5600X%2Flibrary_management'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 0066eb0241711e60067673eb44844c145e505cef
[INFO] checking amdRyzen5600X/library_management against try#8a0378607d6b34c242e3bfa75554871be641864b for pr-143028
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FamdRyzen5600X%2Flibrary_management" "/workspace/builds/worker-0-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/amdRyzen5600X/library_management
[INFO] finished tweaking git repo https://github.com/amdRyzen5600X/library_management
[INFO] tweaked toml for git repo https://github.com/amdRyzen5600X/library_management written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/amdRyzen5600X/library_management on toolchain 8a0378607d6b34c242e3bfa75554871be641864b
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+8a0378607d6b34c242e3bfa75554871be641864b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/amdRyzen5600X/library_management 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" "+8a0378607d6b34c242e3bfa75554871be641864b" "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-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a0378607d6b34c242e3bfa75554871be641864b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 83750050ec66ff48a40e63587ab2faeb8c930c97baf09d44251577ae9e1bb087
[INFO] running `Command { std: "docker" "start" "-a" "83750050ec66ff48a40e63587ab2faeb8c930c97baf09d44251577ae9e1bb087", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "83750050ec66ff48a40e63587ab2faeb8c930c97baf09d44251577ae9e1bb087", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83750050ec66ff48a40e63587ab2faeb8c930c97baf09d44251577ae9e1bb087", kill_on_drop: false }`
[INFO] [stdout] 83750050ec66ff48a40e63587ab2faeb8c930c97baf09d44251577ae9e1bb087
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:90999bfc7ae267e83380e433d8e61a7c072ca6729e92edbae886d3423b3a6f4c" "/opt/rustwide/cargo-home/bin/cargo" "+8a0378607d6b34c242e3bfa75554871be641864b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c5f4c6600318a167119bb9467c60299f2ed1623f0a76018ad80c5831a658f6d0
[INFO] running `Command { std: "docker" "start" "-a" "c5f4c6600318a167119bb9467c60299f2ed1623f0a76018ad80c5831a658f6d0", kill_on_drop: false }`
[INFO] [stderr]     Checking library v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: field `author_name` is never read
[INFO] [stdout]  --> src/book.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Book {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 3 |     pub title: String,
[INFO] [stdout] 4 |     pub author_name: String,
[INFO] [stdout]   |         ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Book` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `author_name` is never read
[INFO] [stdout]  --> src/book.rs:4:9
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub struct Book {
[INFO] [stdout]   |            ---- field in this struct
[INFO] [stdout] 3 |     pub title: String,
[INFO] [stdout] 4 |     pub author_name: String,
[INFO] [stdout]   |         ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `Book` has derived impls for the traits `Clone` and `Debug`, but these are intentionally ignored during dead code analysis
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "c5f4c6600318a167119bb9467c60299f2ed1623f0a76018ad80c5831a658f6d0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c5f4c6600318a167119bb9467c60299f2ed1623f0a76018ad80c5831a658f6d0", kill_on_drop: false }`
[INFO] [stdout] c5f4c6600318a167119bb9467c60299f2ed1623f0a76018ad80c5831a658f6d0