Sep 10 03:49:23.645 INFO checking justincampbell/url-shortener-rust against try#3a2610c2a16575649896925631bf8cec4f4b1961 for pr-54090
Sep 10 03:49:23.645 INFO running: cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets
Sep 10 03:49:23.646 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-54090/try#3a2610c2a16575649896925631bf8cec4f4b1961:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54090/worker-4/try#3a2610c2a16575649896925631bf8cec4f4b1961:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "CMD=cargo +3a2610c2a16575649896925631bf8cec4f4b1961-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-m" "2G" "crater"`
Sep 10 03:49:24.030 INFO blam! 412deeb3d8a8e53a43296a14988ba33a4d765487da8db8bb215b8508535027c1
Sep 10 03:49:24.033 INFO running `"docker" "start" "-a" "412deeb3d8a8e53a43296a14988ba33a4d765487da8db8bb215b8508535027c1"`
Sep 10 03:49:25.255 INFO kablam! usermod: no changes
Sep 10 03:49:25.298 INFO kablam!     Checking shortener v0.0.1 (file:///source)
Sep 10 03:49:25.662 INFO kablam! warning: type alias is never used: `Token`
Sep 10 03:49:25.662 INFO kablam!  --> src/shortener.rs:3:1
Sep 10 03:49:25.662 INFO kablam!   |
Sep 10 03:49:25.662 INFO kablam! 3 | type Token = String;
Sep 10 03:49:25.662 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^
Sep 10 03:49:25.662 INFO kablam!   |
Sep 10 03:49:25.662 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 10 03:49:25.662 INFO kablam! 
Sep 10 03:49:25.662 INFO kablam! warning: type alias is never used: `Url`
Sep 10 03:49:25.662 INFO kablam!  --> src/shortener.rs:4:1
Sep 10 03:49:25.662 INFO kablam!   |
Sep 10 03:49:25.662 INFO kablam! 4 | type Url = String;
Sep 10 03:49:25.662 INFO kablam!   | ^^^^^^^^^^^^^^^^^^
Sep 10 03:49:25.662 INFO kablam! 
Sep 10 03:49:25.662 INFO kablam! warning: struct is never constructed: `World`
Sep 10 03:49:25.662 INFO kablam!  --> src/shortener.rs:6:1
Sep 10 03:49:25.662 INFO kablam!   |
Sep 10 03:49:25.662 INFO kablam! 6 | pub struct World {
Sep 10 03:49:25.662 INFO kablam!   | ^^^^^^^^^^^^^^^^
Sep 10 03:49:25.662 INFO kablam! 
Sep 10 03:49:25.662 INFO kablam! warning: method is never used: `empty`
Sep 10 03:49:25.662 INFO kablam!   --> src/shortener.rs:12:5
Sep 10 03:49:25.662 INFO kablam!    |
Sep 10 03:49:25.662 INFO kablam! 12 |     pub fn empty() -> World {
Sep 10 03:49:25.662 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 03:49:25.662 INFO kablam! 
Sep 10 03:49:25.662 INFO kablam! warning: method is never used: `shorten`
Sep 10 03:49:25.662 INFO kablam!   --> src/shortener.rs:16:5
Sep 10 03:49:25.662 INFO kablam!    |
Sep 10 03:49:25.663 INFO kablam! 16 |     pub fn shorten(&mut self, url: &Url) -> Token {
Sep 10 03:49:25.663 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 03:49:25.663 INFO kablam! 
Sep 10 03:49:25.663 INFO kablam! warning: method is never used: `expand`
Sep 10 03:49:25.663 INFO kablam!   --> src/shortener.rs:25:5
Sep 10 03:49:25.663 INFO kablam!    |
Sep 10 03:49:25.663 INFO kablam! 25 |     pub fn expand(&self, token: Token) -> Option<&Url> {
Sep 10 03:49:25.663 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 03:49:25.663 INFO kablam! 
Sep 10 03:49:25.663 INFO kablam! warning: method is never used: `tokenize`
Sep 10 03:49:25.663 INFO kablam!   --> src/shortener.rs:29:5
Sep 10 03:49:25.663 INFO kablam!    |
Sep 10 03:49:25.663 INFO kablam! 29 |     fn tokenize(id: i32) -> String {
Sep 10 03:49:25.663 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 10 03:49:25.663 INFO kablam! 
Sep 10 03:49:25.698 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
Sep 10 03:49:25.702 INFO kablam! su: No module specific data is present
Sep 10 03:49:26.493 INFO running `"docker" "rm" "-f" "412deeb3d8a8e53a43296a14988ba33a4d765487da8db8bb215b8508535027c1"`
Sep 10 03:49:26.599 INFO blam! 412deeb3d8a8e53a43296a14988ba33a4d765487da8db8bb215b8508535027c1