Sep 19 15:31:46.079 INFO checking justincampbell/url-shortener-rust against master#1e21c9a297a9fe668d62887a3a6a4add8e717b17 for pr-54352
Sep 19 15:31:46.079 INFO running: cargo +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets
Sep 19 15:31:46.079 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-6/pr-54352/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-54352/worker-6/master#1e21c9a297a9fe668d62887a3a6a4add8e717b17:/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 +1e21c9a297a9fe668d62887a3a6a4add8e717b17-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "1536M" "crater"`
Sep 19 15:31:46.311 INFO blam! af4f07de82bb6f979fada951570ad9e2f5c92741bc20f6cfb5583aca779577d2
Sep 19 15:31:46.312 INFO running `"docker" "start" "-a" "af4f07de82bb6f979fada951570ad9e2f5c92741bc20f6cfb5583aca779577d2"`
Sep 19 15:31:47.656 INFO kablam! usermod: no changes
Sep 19 15:31:47.706 INFO kablam!     Checking shortener v0.0.1 (/source)
Sep 19 15:31:48.058 INFO kablam! warning: type alias is never used: `Token`
Sep 19 15:31:48.058 INFO kablam!  --> src/shortener.rs:3:1
Sep 19 15:31:48.058 INFO kablam!   |
Sep 19 15:31:48.058 INFO kablam! 3 | type Token = String;
Sep 19 15:31:48.058 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^
Sep 19 15:31:48.058 INFO kablam!   |
Sep 19 15:31:48.058 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 19 15:31:48.058 INFO kablam! 
Sep 19 15:31:48.058 INFO kablam! warning: type alias is never used: `Url`
Sep 19 15:31:48.058 INFO kablam!  --> src/shortener.rs:4:1
Sep 19 15:31:48.058 INFO kablam!   |
Sep 19 15:31:48.058 INFO kablam! 4 | type Url = String;
Sep 19 15:31:48.058 INFO kablam!   | ^^^^^^^^^^^^^^^^^^
Sep 19 15:31:48.058 INFO kablam! 
Sep 19 15:31:48.058 INFO kablam! warning: struct is never constructed: `World`
Sep 19 15:31:48.058 INFO kablam!  --> src/shortener.rs:6:1
Sep 19 15:31:48.058 INFO kablam!   |
Sep 19 15:31:48.058 INFO kablam! 6 | pub struct World {
Sep 19 15:31:48.058 INFO kablam!   | ^^^^^^^^^^^^^^^^
Sep 19 15:31:48.058 INFO kablam! 
Sep 19 15:31:48.058 INFO kablam! warning: method is never used: `empty`
Sep 19 15:31:48.058 INFO kablam!   --> src/shortener.rs:12:5
Sep 19 15:31:48.058 INFO kablam!    |
Sep 19 15:31:48.058 INFO kablam! 12 |     pub fn empty() -> World {
Sep 19 15:31:48.058 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^
Sep 19 15:31:48.058 INFO kablam! 
Sep 19 15:31:48.058 INFO kablam! warning: method is never used: `shorten`
Sep 19 15:31:48.058 INFO kablam!   --> src/shortener.rs:16:5
Sep 19 15:31:48.058 INFO kablam!    |
Sep 19 15:31:48.058 INFO kablam! 16 |     pub fn shorten(&mut self, url: &Url) -> Token {
Sep 19 15:31:48.058 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 19 15:31:48.058 INFO kablam! 
Sep 19 15:31:48.058 INFO kablam! warning: method is never used: `expand`
Sep 19 15:31:48.058 INFO kablam!   --> src/shortener.rs:25:5
Sep 19 15:31:48.058 INFO kablam!    |
Sep 19 15:31:48.058 INFO kablam! 25 |     pub fn expand(&self, token: Token) -> Option<&Url> {
Sep 19 15:31:48.058 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 19 15:31:48.058 INFO kablam! 
Sep 19 15:31:48.059 INFO kablam! warning: method is never used: `tokenize`
Sep 19 15:31:48.059 INFO kablam!   --> src/shortener.rs:29:5
Sep 19 15:31:48.059 INFO kablam!    |
Sep 19 15:31:48.059 INFO kablam! 29 |     fn tokenize(id: i32) -> String {
Sep 19 15:31:48.059 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 19 15:31:48.059 INFO kablam! 
Sep 19 15:31:48.138 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
Sep 19 15:31:48.142 INFO kablam! su: No module specific data is present
Sep 19 15:31:49.138 INFO running `"docker" "rm" "-f" "af4f07de82bb6f979fada951570ad9e2f5c92741bc20f6cfb5583aca779577d2"`
Sep 19 15:31:49.267 INFO blam! af4f07de82bb6f979fada951570ad9e2f5c92741bc20f6cfb5583aca779577d2