[INFO] fetching crate yake-rust 0.1.8...
[INFO] checking yake-rust-0.1.8 against master#ab869e094a907cc5d19b4080f22eccaf347f1f95 for pr-129604
[INFO] extracting crate yake-rust 0.1.8 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate yake-rust 0.1.8 on toolchain ab869e094a907cc5d19b4080f22eccaf347f1f95
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate yake-rust 0.1.8
[INFO] finished tweaking crates.io crate yake-rust 0.1.8
[INFO] tweaked toml for crates.io crate yake-rust 0.1.8 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 24 packages to latest compatible versions
[INFO] [stderr]       Adding natural v0.3.0 (latest: v0.5.0)
[INFO] [stderr]       Adding streaming-stats v0.1.29 (latest: v0.2.3)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded natural v0.3.0
[INFO] [stderr]   Downloaded contractions v0.5.4
[INFO] [stderr]   Downloaded streaming-stats v0.1.29
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] f1fa618986b9fd6c8af25363d8b3ae773ea9f90471d1b40fcaa57c20a6392265
[INFO] running `Command { std: "docker" "start" "-a" "f1fa618986b9fd6c8af25363d8b3ae773ea9f90471d1b40fcaa57c20a6392265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f1fa618986b9fd6c8af25363d8b3ae773ea9f90471d1b40fcaa57c20a6392265", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f1fa618986b9fd6c8af25363d8b3ae773ea9f90471d1b40fcaa57c20a6392265", kill_on_drop: false }`
[INFO] [stdout] f1fa618986b9fd6c8af25363d8b3ae773ea9f90471d1b40fcaa57c20a6392265
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+ab869e094a907cc5d19b4080f22eccaf347f1f95" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8f3101606f68ca6a737e6fa49a0681da1933ea2c0d0542b94af69402842fe3bc
[INFO] running `Command { std: "docker" "start" "-a" "8f3101606f68ca6a737e6fa49a0681da1933ea2c0d0542b94af69402842fe3bc", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-segmentation v1.11.0
[INFO] [stderr]     Checking natural v0.3.0
[INFO] [stderr]     Checking streaming-stats v0.1.29
[INFO] [stderr]     Checking serde v1.0.209
[INFO] [stderr]     Checking serde_json v1.0.127
[INFO] [stderr]     Checking serde_regex v1.1.0
[INFO] [stderr]     Checking linked-hash-map v0.5.6
[INFO] [stderr]     Checking contractions v0.5.4
[INFO] [stderr]     Checking yake-rust v0.1.8 (/opt/rustwide/workdir)
[INFO] [stdout] warning: value assigned to `distance` is never read
[INFO] [stdout]  --> src/levenshtein.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut distance = 0;
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: value assigned to `distance` is never read
[INFO] [stdout]  --> src/levenshtein.rs:8:17
[INFO] [stdout]   |
[INFO] [stdout] 8 |         let mut distance = 0;
[INFO] [stdout]   |                 ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = help: maybe it is overwritten before being read?
[INFO] [stdout]   = note: `#[warn(unused_assignments)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ignore_urls` and `expand_contractions` are never read
[INFO] [stdout]  --> src/preprocessor.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Preprocessor {
[INFO] [stdout]   |            ------------ fields in this struct
[INFO] [stdout] 4 |     pub text: String,
[INFO] [stdout] 5 |     pub ignore_urls: bool,
[INFO] [stdout]   |         ^^^^^^^^^^^
[INFO] [stdout] 6 |     pub expand_contractions: bool,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias `Results` is never used
[INFO] [stdout]    --> src/lib.rs:482:10
[INFO] [stdout]     |
[INFO] [stdout] 482 |     type Results = Vec<ResultItem>;
[INFO] [stdout]     |          ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function `keywords` is never used
[INFO] [stdout]    --> src/lib.rs:485:8
[INFO] [stdout]     |
[INFO] [stdout] 485 |     fn keywords() {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: fields `ignore_urls` and `expand_contractions` are never read
[INFO] [stdout]  --> src/preprocessor.rs:5:9
[INFO] [stdout]   |
[INFO] [stdout] 3 | pub struct Preprocessor {
[INFO] [stdout]   |            ------------ fields in this struct
[INFO] [stdout] 4 |     pub text: String,
[INFO] [stdout] 5 |     pub ignore_urls: bool,
[INFO] [stdout]   |         ^^^^^^^^^^^
[INFO] [stdout] 6 |     pub expand_contractions: bool,
[INFO] [stdout]   |         ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Vec<Occurrence>` instead of cloning the inner type
[INFO] [stdout]    --> src/lib.rs:276:35
[INFO] [stdout]     |
[INFO] [stdout] 276 |             for occurrence in word.clone() {
[INFO] [stdout]     |                                   ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: using `.clone()` on a double reference, which returns `&Vec<Occurrence>` instead of cloning the inner type
[INFO] [stdout]    --> src/lib.rs:276:35
[INFO] [stdout]     |
[INFO] [stdout] 276 |             for occurrence in word.clone() {
[INFO] [stdout]     |                                   ^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(suspicious_double_ref_op)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.99s
[INFO] running `Command { std: "docker" "inspect" "8f3101606f68ca6a737e6fa49a0681da1933ea2c0d0542b94af69402842fe3bc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8f3101606f68ca6a737e6fa49a0681da1933ea2c0d0542b94af69402842fe3bc", kill_on_drop: false }`
[INFO] [stdout] 8f3101606f68ca6a737e6fa49a0681da1933ea2c0d0542b94af69402842fe3bc