Sep 05 18:31:40.307 INFO checking justincampbell/url-shortener-rust against try#51ff957df5095d92d1d3d4682207ee8b7ad408a8 for pr-53854
Sep 05 18:31:40.307 INFO running: cargo +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets
Sep 05 18:31:40.307 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-4/pr-53854/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53854/worker-4/try#51ff957df5095d92d1d3d4682207ee8b7ad408a8:/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 +51ff957df5095d92d1d3d4682207ee8b7ad408a8-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 05 18:31:40.720 INFO blam! 94a419ffd445df677ac723f26bd57a30cf269a9f2ce08bfb268280ff868e3b1a
Sep 05 18:31:40.722 INFO running `"docker" "start" "-a" "94a419ffd445df677ac723f26bd57a30cf269a9f2ce08bfb268280ff868e3b1a"`
Sep 05 18:31:42.138 INFO kablam! usermod: no changes
Sep 05 18:31:42.218 INFO kablam!     Checking shortener v0.0.1 (file:///source)
Sep 05 18:31:42.443 INFO kablam! warning: type alias is never used: `Token`
Sep 05 18:31:42.444 INFO kablam!  --> src/shortener.rs:3:1
Sep 05 18:31:42.444 INFO kablam!   |
Sep 05 18:31:42.444 INFO kablam! 3 | type Token = String;
Sep 05 18:31:42.444 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^
Sep 05 18:31:42.444 INFO kablam!   |
Sep 05 18:31:42.444 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 05 18:31:42.444 INFO kablam! 
Sep 05 18:31:42.444 INFO kablam! warning: type alias is never used: `Url`
Sep 05 18:31:42.444 INFO kablam!  --> src/shortener.rs:4:1
Sep 05 18:31:42.444 INFO kablam!   |
Sep 05 18:31:42.444 INFO kablam! 4 | type Url = String;
Sep 05 18:31:42.444 INFO kablam!   | ^^^^^^^^^^^^^^^^^^
Sep 05 18:31:42.444 INFO kablam! 
Sep 05 18:31:42.453 INFO kablam! warning: struct is never constructed: `World`
Sep 05 18:31:42.453 INFO kablam!  --> src/shortener.rs:6:1
Sep 05 18:31:42.453 INFO kablam!   |
Sep 05 18:31:42.453 INFO kablam! 6 | pub struct World {
Sep 05 18:31:42.453 INFO kablam!   | ^^^^^^^^^^^^^^^^
Sep 05 18:31:42.454 INFO kablam! 
Sep 05 18:31:42.454 INFO kablam! warning: method is never used: `empty`
Sep 05 18:31:42.454 INFO kablam!   --> src/shortener.rs:12:5
Sep 05 18:31:42.454 INFO kablam!    |
Sep 05 18:31:42.454 INFO kablam! 12 |     pub fn empty() -> World {
Sep 05 18:31:42.454 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^
Sep 05 18:31:42.454 INFO kablam! 
Sep 05 18:31:42.454 INFO kablam! warning: method is never used: `shorten`
Sep 05 18:31:42.454 INFO kablam!   --> src/shortener.rs:16:5
Sep 05 18:31:42.454 INFO kablam!    |
Sep 05 18:31:42.454 INFO kablam! 16 |     pub fn shorten(&mut self, url: &Url) -> Token {
Sep 05 18:31:42.454 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 05 18:31:42.454 INFO kablam! 
Sep 05 18:31:42.454 INFO kablam! warning: method is never used: `expand`
Sep 05 18:31:42.454 INFO kablam!   --> src/shortener.rs:25:5
Sep 05 18:31:42.454 INFO kablam!    |
Sep 05 18:31:42.454 INFO kablam! 25 |     pub fn expand(&self, token: Token) -> Option<&Url> {
Sep 05 18:31:42.454 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 05 18:31:42.454 INFO kablam! 
Sep 05 18:31:42.454 INFO kablam! warning: method is never used: `tokenize`
Sep 05 18:31:42.454 INFO kablam!   --> src/shortener.rs:29:5
Sep 05 18:31:42.454 INFO kablam!    |
Sep 05 18:31:42.454 INFO kablam! 29 |     fn tokenize(id: i32) -> String {
Sep 05 18:31:42.454 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 05 18:31:42.454 INFO kablam! 
Sep 05 18:31:42.553 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.38s
Sep 05 18:31:42.565 INFO kablam! su: No module specific data is present
Sep 05 18:31:43.524 INFO running `"docker" "rm" "-f" "94a419ffd445df677ac723f26bd57a30cf269a9f2ce08bfb268280ff868e3b1a"`
Sep 05 18:31:43.781 INFO blam! 94a419ffd445df677ac723f26bd57a30cf269a9f2ce08bfb268280ff868e3b1a