[INFO] cloning repository https://github.com/nathanielc/slop
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/nathanielc/slop" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnathanielc%2Fslop", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnathanielc%2Fslop'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] faf094af48c5acfb5778c63ee91985f8db515596
[INFO] checking nathanielc/slop against master#542febd2d383b5082277c7d165b098c0a3b513f6 for pr-103293
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fnathanielc%2Fslop" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/nathanielc/slop on toolchain 542febd2d383b5082277c7d165b098c0a3b513f6
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+542febd2d383b5082277c7d165b098c0a3b513f6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/nathanielc/slop
[INFO] finished tweaking git repo https://github.com/nathanielc/slop
[INFO] tweaked toml for git repo https://github.com/nathanielc/slop written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/nathanielc/slop already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+542febd2d383b5082277c7d165b098c0a3b513f6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "start" "-a" "0cf533cdf0763ab2671b247204cf87327c1e85aa7734a74f9b50ce84f975009f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0cf533cdf0763ab2671b247204cf87327c1e85aa7734a74f9b50ce84f975009f", kill_on_drop: false }`
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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@sha256:83125433e4fff17b1ac56874832f668d9df75ee638575aca552b68e127bedee9" "/opt/rustwide/cargo-home/bin/cargo" "+542febd2d383b5082277c7d165b098c0a3b513f6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
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[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/bin/slop-language-server.rs:228:16
[INFO] [stdout]     |
[INFO] [stdout] 228 |             Ok(expr) => Vec::new(),
[INFO] [stdout]     |                ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expr`
[INFO] [stdout]    --> src/bin/slop-language-server.rs:228:16
[INFO] [stdout]     |
[INFO] [stdout] 228 |             Ok(expr) => Vec::new(),
[INFO] [stdout]     |                ^^^^ help: if this is intentional, prefix it with an underscore: `_expr`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected`
[INFO] [stdout]    --> src/bin/slop-language-server.rs:245:21
[INFO] [stdout]     |
[INFO] [stdout] 245 |                     ref expected,
[INFO] [stdout]     |                     ^^^^^^^^^^^^ help: try ignoring the field: `expected: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected`
[INFO] [stdout]    --> src/bin/slop-language-server.rs:264:21
[INFO] [stdout]     |
[INFO] [stdout] 264 |                     ref expected,
[INFO] [stdout]     |                     ^^^^^^^^^^^^ help: try ignoring the field: `expected: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `uri`
[INFO] [stdout]    --> src/bin/slop-language-server.rs:225:39
[INFO] [stdout]     |
[INFO] [stdout] 225 |     fn get_diagnostics(state: &State, uri: &Url, id: FileId) -> Vec<Diagnostic> {
[INFO] [stdout]     |                                       ^^^ help: if this is intentional, prefix it with an underscore: `_uri`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected`
[INFO] [stdout]    --> src/bin/slop-language-server.rs:245:21
[INFO] [stdout]     |
[INFO] [stdout] 245 |                     ref expected,
[INFO] [stdout]     |                     ^^^^^^^^^^^^ help: try ignoring the field: `expected: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `expected`
[INFO] [stdout]    --> src/bin/slop-language-server.rs:264:21
[INFO] [stdout]     |
[INFO] [stdout] 264 |                     ref expected,
[INFO] [stdout]     |                     ^^^^^^^^^^^^ help: try ignoring the field: `expected: _`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `uri`
[INFO] [stdout]    --> src/bin/slop-language-server.rs:225:39
[INFO] [stdout]     |
[INFO] [stdout] 225 |     fn get_diagnostics(state: &State, uri: &Url, id: FileId) -> Vec<Diagnostic> {
[INFO] [stdout]     |                                       ^^^ help: if this is intentional, prefix it with an underscore: `_uri`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1m 26s
[INFO] running `Command { std: "docker" "inspect" "751e8eb0d4de190318b3904e8fa9d5d2d8ee3f55f3ef1c4dcebe9059f0825ce9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "751e8eb0d4de190318b3904e8fa9d5d2d8ee3f55f3ef1c4dcebe9059f0825ce9", kill_on_drop: false }`
[INFO] [stdout] 751e8eb0d4de190318b3904e8fa9d5d2d8ee3f55f3ef1c4dcebe9059f0825ce9