[INFO] fetching crate rsplitter 0.2.0...
[INFO] checking rsplitter-0.2.0 against try#998b6603a58e47f42ccce7a67943234e96b6839e for pr-143170
[INFO] extracting crate rsplitter 0.2.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate rsplitter 0.2.0
[INFO] finished tweaking crates.io crate rsplitter 0.2.0
[INFO] tweaked toml for crates.io crate rsplitter 0.2.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate rsplitter 0.2.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+998b6603a58e47f42ccce7a67943234e96b6839e" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[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-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] 021671a5b9b87066a550df498d2f1d6d721b7ddd8b41fba102d6e60d2a187a80
[INFO] running `Command { std: "docker" "start" "-a" "021671a5b9b87066a550df498d2f1d6d721b7ddd8b41fba102d6e60d2a187a80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "021671a5b9b87066a550df498d2f1d6d721b7ddd8b41fba102d6e60d2a187a80", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "021671a5b9b87066a550df498d2f1d6d721b7ddd8b41fba102d6e60d2a187a80", kill_on_drop: false }`
[INFO] [stdout] 021671a5b9b87066a550df498d2f1d6d721b7ddd8b41fba102d6e60d2a187a80
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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] f5b11381a57016fdd08687dd3426bfa64306a6741189227ec8754f0e8cb6b3bd
[INFO] running `Command { std: "docker" "start" "-a" "f5b11381a57016fdd08687dd3426bfa64306a6741189227ec8754f0e8cb6b3bd", kill_on_drop: false }`
[INFO] [stderr]     Checking lazy_static v1.5.0
[INFO] [stderr]     Checking rsplitter v0.2.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: struct `LanguageModel` is never constructed
[INFO] [stdout]  --> src/language_model.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct LanguageModel {
[INFO] [stdout]   |            ^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: methods `best_match`, `build_cost_array`, `lines_from_file`, `minimal_cost`, `set_cost_dict`, and `split` are never used
[INFO] [stdout]    --> src/language_model.rs:14:8
[INFO] [stdout]     |
[INFO] [stdout] 13  | impl LanguageModel {
[INFO] [stdout]     | ------------------ methods in this implementation
[INFO] [stdout] 14  |     fn best_match(&mut self, i: i32, text: String, cost: Vec<f32>) -> (f32, f32) {
[INFO] [stdout]     |        ^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 47  |     fn build_cost_array(&mut self, text_length: u32, text: String, cost: Vec<f32>) -> Vec<f32> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 57  |     fn lines_from_file(&mut self) -> Vec<String> {
[INFO] [stdout]     |        ^^^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 75  |     fn minimal_cost(&mut self, text: String, cost: Vec<f32>, text_length: u32) -> Vec<String> {
[INFO] [stdout]     |        ^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 115 |     fn set_cost_dict(&mut self) -> (HashMap<String, f32>, i32) {
[INFO] [stdout]     |        ^^^^^^^^^^^^^
[INFO] [stdout] ...
[INFO] [stdout] 150 |     pub fn split(&mut self, text: String) -> String {
[INFO] [stdout]     |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.52s
[INFO] running `Command { std: "docker" "inspect" "f5b11381a57016fdd08687dd3426bfa64306a6741189227ec8754f0e8cb6b3bd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f5b11381a57016fdd08687dd3426bfa64306a6741189227ec8754f0e8cb6b3bd", kill_on_drop: false }`
[INFO] [stdout] f5b11381a57016fdd08687dd3426bfa64306a6741189227ec8754f0e8cb6b3bd