[INFO] fetching crate seqdupes 0.1.0...
[INFO] checking seqdupes-0.1.0 against master#2e677c0645862d17a12c6d04b3019203c8e23fcc for pr-106493
[INFO] extracting crate seqdupes 0.1.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate seqdupes 0.1.0 on toolchain 2e677c0645862d17a12c6d04b3019203c8e23fcc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2e677c0645862d17a12c6d04b3019203c8e23fcc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate seqdupes 0.1.0
[INFO] finished tweaking crates.io crate seqdupes 0.1.0
[INFO] tweaked toml for crates.io crate seqdupes 0.1.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] crate crates.io crate seqdupes 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" "+2e677c0645862d17a12c6d04b3019203c8e23fcc" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
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[INFO] running `Command { std: "docker" "start" "-a" "f68ff2ec43e988f860ee6b6d972aad654adee41a192c34f67f5a5ae4e7b3a213", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f68ff2ec43e988f860ee6b6d972aad654adee41a192c34f67f5a5ae4e7b3a213", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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@sha256:9042d5c95763f71f7b0904716b98ccadf9fc47b0f382ee962aaaed2ac70c9b8d" "/opt/rustwide/cargo-home/bin/cargo" "+2e677c0645862d17a12c6d04b3019203c8e23fcc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/process.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 59 |     file.write_all(json!(dupe_headers).to_string().as_bytes());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/process.rs:59:5
[INFO] [stdout]    |
[INFO] [stdout] 59 |     file.write_all(json!(dupe_headers).to_string().as_bytes());
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 45.09s
[INFO] running `Command { std: "docker" "inspect" "2dad524e2b6cdf4d1f2642ca4e754cd4d690cd1c547d8b0c53ec0fecc023784b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2dad524e2b6cdf4d1f2642ca4e754cd4d690cd1c547d8b0c53ec0fecc023784b", kill_on_drop: false }`
[INFO] [stdout] 2dad524e2b6cdf4d1f2642ca4e754cd4d690cd1c547d8b0c53ec0fecc023784b