[INFO] fetching crate books-db 0.1.0...
[INFO] checking books-db-0.1.0 against 1.95.0 for pr-155915
[INFO] extracting crate books-db 0.1.0 into /workspace/builds/worker-6-tc1/source
[INFO] started tweaking crates.io crate books-db 0.1.0
[INFO] finished tweaking crates.io crate books-db 0.1.0
[INFO] tweaked toml for crates.io crate books-db 0.1.0 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] validating manifest of crates.io crate books-db 0.1.0 on toolchain 1.95.0
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1.95.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate books-db 0.1.0 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" "+1.95.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cc0c9bcff6ff5a541c4498b7ca110e8e7c13ade88c00f38df584e9474f98d4f2
[INFO] running `Command { std: "docker" "start" "-a" "cc0c9bcff6ff5a541c4498b7ca110e8e7c13ade88c00f38df584e9474f98d4f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cc0c9bcff6ff5a541c4498b7ca110e8e7c13ade88c00f38df584e9474f98d4f2", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc0c9bcff6ff5a541c4498b7ca110e8e7c13ade88c00f38df584e9474f98d4f2", kill_on_drop: false }`
[INFO] [stdout] cc0c9bcff6ff5a541c4498b7ca110e8e7c13ade88c00f38df584e9474f98d4f2
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/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:d429b63d4308055ea97f60fb1d3dfca48854a00942f1bd2ad806beaf015945ec" "/opt/rustwide/cargo-home/bin/cargo" "+1.95.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] c06ed4a7635c53a268e1af0d27ec2ef20bcf677ff8f161bcb63c7ca55479836a
[INFO] running `Command { std: "docker" "start" "-a" "c06ed4a7635c53a268e1af0d27ec2ef20bcf677ff8f161bcb63c7ca55479836a", kill_on_drop: false }`
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[INFO] [stderr]     Checking prettytable-rs v0.10.0
[INFO] [stderr]     Checking h2 v0.3.18
[INFO] [stderr]     Checking assert-json-diff v2.0.2
[INFO] [stderr]    Compiling basic-cookies v0.1.4
[INFO] [stderr]     Checking rusqlite v0.29.0
[INFO] [stderr]     Checking hyper v0.14.26
[INFO] [stderr]     Checking hyper-rustls v0.23.2
[INFO] [stderr]     Checking httpmock v0.6.7
[INFO] [stderr]     Checking reqwest v0.11.17
[INFO] [stderr]     Checking books-db v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/books.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |         for mut author in book.authors.iter_mut() {
[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: field `image_url` is never read
[INFO] [stdout]   --> src/isbn_db.rs:10:9
[INFO] [stdout]    |
[INFO] [stdout]  7 | pub struct IsbnDbBook {
[INFO] [stdout]    |            ---------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 10 |     pub image_url: String,
[INFO] [stdout]    |         ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/books.rs:86:13
[INFO] [stdout]    |
[INFO] [stdout] 86 |         for mut author in book.authors.iter_mut() {
[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] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 1m 02s
[INFO] running `Command { std: "docker" "inspect" "c06ed4a7635c53a268e1af0d27ec2ef20bcf677ff8f161bcb63c7ca55479836a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c06ed4a7635c53a268e1af0d27ec2ef20bcf677ff8f161bcb63c7ca55479836a", kill_on_drop: false }`
[INFO] [stdout] c06ed4a7635c53a268e1af0d27ec2ef20bcf677ff8f161bcb63c7ca55479836a
