Dec 19 14:45:20.876 INFO checking justincampbell/url-shortener-rust against master#d99a320cba42f661aebfa1293b7b2ec3603dda75 for pr-56955
Dec 19 14:45:20.876 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56955/worker-4/master#d99a320cba42f661aebfa1293b7b2ec3603dda75:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-56955/sources/master#d99a320cba42f661aebfa1293b7b2ec3603dda75/gh/justincampbell/url-shortener-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+d99a320cba42f661aebfa1293b7b2ec3603dda75-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 19 14:45:21.434 INFO [stdout] bcf5b3b5843b135f05331f6f2fcb3003f108211fd638e0d5bd0ce85bb5ee3f1e
Dec 19 14:45:21.434 INFO running `"docker" "start" "-a" "bcf5b3b5843b135f05331f6f2fcb3003f108211fd638e0d5bd0ce85bb5ee3f1e"`
Dec 19 14:45:23.224 INFO [stderr]     Checking shortener v0.0.1 (/opt/crater/workdir)
Dec 19 14:45:23.487 INFO [stderr] warning: type alias is never used: `Token`
Dec 19 14:45:23.487 INFO [stderr]  --> src/shortener.rs:3:1
Dec 19 14:45:23.487 INFO [stderr]   |
Dec 19 14:45:23.487 INFO [stderr] 3 | type Token = String;
Dec 19 14:45:23.487 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^^^
Dec 19 14:45:23.487 INFO [stderr]   |
Dec 19 14:45:23.487 INFO [stderr]   = note: #[warn(dead_code)] on by default
Dec 19 14:45:23.487 INFO [stderr] 
Dec 19 14:45:23.487 INFO [stderr] warning: type alias is never used: `Url`
Dec 19 14:45:23.487 INFO [stderr]  --> src/shortener.rs:4:1
Dec 19 14:45:23.487 INFO [stderr]   |
Dec 19 14:45:23.487 INFO [stderr] 4 | type Url = String;
Dec 19 14:45:23.487 INFO [stderr]   | ^^^^^^^^^^^^^^^^^^
Dec 19 14:45:23.487 INFO [stderr] 
Dec 19 14:45:23.487 INFO [stderr] warning: struct is never constructed: `World`
Dec 19 14:45:23.487 INFO [stderr]  --> src/shortener.rs:6:1
Dec 19 14:45:23.487 INFO [stderr]   |
Dec 19 14:45:23.487 INFO [stderr] 6 | pub struct World {
Dec 19 14:45:23.487 INFO [stderr]   | ^^^^^^^^^^^^^^^^
Dec 19 14:45:23.487 INFO [stderr] 
Dec 19 14:45:23.487 INFO [stderr] warning: method is never used: `empty`
Dec 19 14:45:23.487 INFO [stderr]   --> src/shortener.rs:12:5
Dec 19 14:45:23.487 INFO [stderr]    |
Dec 19 14:45:23.487 INFO [stderr] 12 |     pub fn empty() -> World {
Dec 19 14:45:23.487 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:45:23.487 INFO [stderr] 
Dec 19 14:45:23.487 INFO [stderr] warning: method is never used: `shorten`
Dec 19 14:45:23.487 INFO [stderr]   --> src/shortener.rs:16:5
Dec 19 14:45:23.487 INFO [stderr]    |
Dec 19 14:45:23.487 INFO [stderr] 16 |     pub fn shorten(&mut self, url: &Url) -> Token {
Dec 19 14:45:23.487 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:45:23.487 INFO [stderr] 
Dec 19 14:45:23.487 INFO [stderr] warning: method is never used: `expand`
Dec 19 14:45:23.487 INFO [stderr]   --> src/shortener.rs:25:5
Dec 19 14:45:23.487 INFO [stderr]    |
Dec 19 14:45:23.487 INFO [stderr] 25 |     pub fn expand(&self, token: Token) -> Option<&Url> {
Dec 19 14:45:23.487 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:45:23.487 INFO [stderr] 
Dec 19 14:45:23.487 INFO [stderr] warning: method is never used: `tokenize`
Dec 19 14:45:23.487 INFO [stderr]   --> src/shortener.rs:29:5
Dec 19 14:45:23.487 INFO [stderr]    |
Dec 19 14:45:23.487 INFO [stderr] 29 |     fn tokenize(id: i32) -> String {
Dec 19 14:45:23.487 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Dec 19 14:45:23.488 INFO [stderr] 
Dec 19 14:45:23.648 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.44s
Dec 19 14:45:24.546 INFO running `"docker" "inspect" "bcf5b3b5843b135f05331f6f2fcb3003f108211fd638e0d5bd0ce85bb5ee3f1e"`
Dec 19 14:45:24.832 INFO running `"docker" "rm" "-f" "bcf5b3b5843b135f05331f6f2fcb3003f108211fd638e0d5bd0ce85bb5ee3f1e"`
Dec 19 14:45:25.092 INFO [stdout] bcf5b3b5843b135f05331f6f2fcb3003f108211fd638e0d5bd0ce85bb5ee3f1e