[INFO] fetching crate fuzzyhash 0.2.2...
[INFO] checking fuzzyhash-0.2.2 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate fuzzyhash 0.2.2 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate fuzzyhash 0.2.2
[INFO] finished tweaking crates.io crate fuzzyhash 0.2.2
[INFO] tweaked toml for crates.io crate fuzzyhash 0.2.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate fuzzyhash 0.2.2 on toolchain 998b6603a58e47f42ccce7a67943234e96b6839e
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate fuzzyhash 0.2.2 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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 66ed35e03dda31cb1954b19d8c0be19afccd08d51d718e9d2836b3e1130650d1
[INFO] running `Command { std: "docker" "start" "-a" "66ed35e03dda31cb1954b19d8c0be19afccd08d51d718e9d2836b3e1130650d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "66ed35e03dda31cb1954b19d8c0be19afccd08d51d718e9d2836b3e1130650d1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "66ed35e03dda31cb1954b19d8c0be19afccd08d51d718e9d2836b3e1130650d1", kill_on_drop: false }`
[INFO] [stdout] 66ed35e03dda31cb1954b19d8c0be19afccd08d51d718e9d2836b3e1130650d1
[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" "+998b6603a58e47f42ccce7a67943234e96b6839e" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 84ae011e8f367f1e20f85e1a35951919e68139c91cf9157b54dc42d60bd16d89
[INFO] running `Command { std: "docker" "start" "-a" "84ae011e8f367f1e20f85e1a35951919e68139c91cf9157b54dc42d60bd16d89", kill_on_drop: false }`
[INFO] [stderr]     Checking fuzzyhash v0.2.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]   --> src/roll.rs:21:32
[INFO] [stdout]    |
[INFO] [stdout] 21 |         self.h1 -= self.window[(self.n as usize % constants::ROLLING_WINDOW)] as u32;
[INFO] [stdout]    |                                ^                                           ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 21 -         self.h1 -= self.window[(self.n as usize % constants::ROLLING_WINDOW)] as u32;
[INFO] [stdout] 21 +         self.h1 -= self.window[self.n as usize % constants::ROLLING_WINDOW] as u32;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]   --> src/roll.rs:23:21
[INFO] [stdout]    |
[INFO] [stdout] 23 |         self.window[(self.n as usize % constants::ROLLING_WINDOW)] = c;
[INFO] [stdout]    |                     ^                                           ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 23 -         self.window[(self.n as usize % constants::ROLLING_WINDOW)] = c;
[INFO] [stdout] 23 +         self.window[self.n as usize % constants::ROLLING_WINDOW] = c;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]   --> src/roll.rs:21:32
[INFO] [stdout]    |
[INFO] [stdout] 21 |         self.h1 -= self.window[(self.n as usize % constants::ROLLING_WINDOW)] as u32;
[INFO] [stdout]    |                                ^                                           ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 21 -         self.h1 -= self.window[(self.n as usize % constants::ROLLING_WINDOW)] as u32;
[INFO] [stdout] 21 +         self.h1 -= self.window[self.n as usize % constants::ROLLING_WINDOW] as u32;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around index expression
[INFO] [stdout]   --> src/roll.rs:23:21
[INFO] [stdout]    |
[INFO] [stdout] 23 |         self.window[(self.n as usize % constants::ROLLING_WINDOW)] = c;
[INFO] [stdout]    |                     ^                                           ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 23 -         self.window[(self.n as usize % constants::ROLLING_WINDOW)] = c;
[INFO] [stdout] 23 +         self.window[self.n as usize % constants::ROLLING_WINDOW] = c;
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> benches/compare_strings1.rs:14:9
[INFO] [stdout]    |
[INFO] [stdout] 14 |         FuzzyHash::compare(&string1, &string2);
[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] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 14 |         let _ = FuzzyHash::compare(&string1, &string2);
[INFO] [stdout]    |         +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.74s
[INFO] running `Command { std: "docker" "inspect" "84ae011e8f367f1e20f85e1a35951919e68139c91cf9157b54dc42d60bd16d89", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "84ae011e8f367f1e20f85e1a35951919e68139c91cf9157b54dc42d60bd16d89", kill_on_drop: false }`
[INFO] [stdout] 84ae011e8f367f1e20f85e1a35951919e68139c91cf9157b54dc42d60bd16d89