Aug 31 22:12:49.465 INFO checking justincampbell/url-shortener-rust against master#1114ab684fbad001c4e580326d8eb4d8c4e917d3 for pr-53831
Aug 31 22:12:49.465 INFO running: cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets
Aug 31 22:12:49.465 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-0/pr-53831/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53831/worker-0/master#1114ab684fbad001c4e580326d8eb4d8c4e917d3:/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=500" "-e" "CMD=cargo +1114ab684fbad001c4e580326d8eb4d8c4e917d3-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Aug 31 22:12:49.731 INFO blam! e3ddfdce29e0c5676629024cba900509f46fd19e46413aefa655e6ca943b2f98
Aug 31 22:12:49.733 INFO running `"docker" "start" "-a" "e3ddfdce29e0c5676629024cba900509f46fd19e46413aefa655e6ca943b2f98"`
Aug 31 22:12:50.561 INFO kablam!     Checking shortener v0.0.1 (file:///source)
Aug 31 22:12:50.880 INFO kablam! warning: type alias is never used: `Token`
Aug 31 22:12:50.880 INFO kablam!  --> src/shortener.rs:3:1
Aug 31 22:12:50.880 INFO kablam!   |
Aug 31 22:12:50.880 INFO kablam! 3 | type Token = String;
Aug 31 22:12:50.880 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^
Aug 31 22:12:50.880 INFO kablam!   |
Aug 31 22:12:50.880 INFO kablam!   = note: #[warn(dead_code)] on by default
Aug 31 22:12:50.880 INFO kablam! 
Aug 31 22:12:50.880 INFO kablam! warning: type alias is never used: `Url`
Aug 31 22:12:50.880 INFO kablam!  --> src/shortener.rs:4:1
Aug 31 22:12:50.880 INFO kablam!   |
Aug 31 22:12:50.880 INFO kablam! 4 | type Url = String;
Aug 31 22:12:50.880 INFO kablam!   | ^^^^^^^^^^^^^^^^^^
Aug 31 22:12:50.880 INFO kablam! 
Aug 31 22:12:50.881 INFO kablam! warning: struct is never constructed: `World`
Aug 31 22:12:50.881 INFO kablam!  --> src/shortener.rs:6:1
Aug 31 22:12:50.881 INFO kablam!   |
Aug 31 22:12:50.881 INFO kablam! 6 | pub struct World {
Aug 31 22:12:50.881 INFO kablam!   | ^^^^^^^^^^^^^^^^
Aug 31 22:12:50.881 INFO kablam! 
Aug 31 22:12:50.881 INFO kablam! warning: method is never used: `empty`
Aug 31 22:12:50.881 INFO kablam!   --> src/shortener.rs:12:5
Aug 31 22:12:50.881 INFO kablam!    |
Aug 31 22:12:50.881 INFO kablam! 12 |     pub fn empty() -> World {
Aug 31 22:12:50.881 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^
Aug 31 22:12:50.881 INFO kablam! 
Aug 31 22:12:50.881 INFO kablam! warning: method is never used: `shorten`
Aug 31 22:12:50.881 INFO kablam!   --> src/shortener.rs:16:5
Aug 31 22:12:50.881 INFO kablam!    |
Aug 31 22:12:50.881 INFO kablam! 16 |     pub fn shorten(&mut self, url: &Url) -> Token {
Aug 31 22:12:50.881 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 31 22:12:50.881 INFO kablam! 
Aug 31 22:12:50.881 INFO kablam! warning: method is never used: `expand`
Aug 31 22:12:50.881 INFO kablam!   --> src/shortener.rs:25:5
Aug 31 22:12:50.881 INFO kablam!    |
Aug 31 22:12:50.881 INFO kablam! 25 |     pub fn expand(&self, token: Token) -> Option<&Url> {
Aug 31 22:12:50.881 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 31 22:12:50.881 INFO kablam! 
Aug 31 22:12:50.881 INFO kablam! warning: method is never used: `tokenize`
Aug 31 22:12:50.881 INFO kablam!   --> src/shortener.rs:29:5
Aug 31 22:12:50.881 INFO kablam!    |
Aug 31 22:12:50.881 INFO kablam! 29 |     fn tokenize(id: i32) -> String {
Aug 31 22:12:50.881 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Aug 31 22:12:50.882 INFO kablam! 
Aug 31 22:12:50.965 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.42s
Aug 31 22:12:50.970 INFO kablam! su: No module specific data is present
Aug 31 22:12:51.494 INFO running `"docker" "rm" "-f" "e3ddfdce29e0c5676629024cba900509f46fd19e46413aefa655e6ca943b2f98"`
Aug 31 22:12:51.648 INFO blam! e3ddfdce29e0c5676629024cba900509f46fd19e46413aefa655e6ca943b2f98