Nov 09 10:47:37.368 INFO checking justincampbell/url-shortener-rust against master#653da4fd006c97625247acd7e076d0782cdc149b for pr-55632
Nov 09 10:47:37.368 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55632/worker-4/master#653da4fd006c97625247acd7e076d0782cdc149b:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-55632/master#653da4fd006c97625247acd7e076d0782cdc149b:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +653da4fd006c97625247acd7e076d0782cdc149b-alt check --frozen --all --all-targets" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 09 10:47:37.867 INFO blam! 05c87db983d28288726f6eee34738403efca5d8298c104d17906ecbdc8cbcdda
Nov 09 10:47:37.871 INFO running `"docker" "start" "-a" "05c87db983d28288726f6eee34738403efca5d8298c104d17906ecbdc8cbcdda"`
Nov 09 10:47:39.315 INFO kablam! usermod: no changes
Nov 09 10:47:39.359 INFO kablam!     Checking shortener v0.0.1 (/source)
Nov 09 10:47:39.899 INFO kablam! warning: type alias is never used: `Token`
Nov 09 10:47:39.899 INFO kablam!  --> src/shortener.rs:3:1
Nov 09 10:47:39.899 INFO kablam!   |
Nov 09 10:47:39.899 INFO kablam! 3 | type Token = String;
Nov 09 10:47:39.899 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^
Nov 09 10:47:39.899 INFO kablam!   |
Nov 09 10:47:39.899 INFO kablam!   = note: #[warn(dead_code)] on by default
Nov 09 10:47:39.899 INFO kablam! 
Nov 09 10:47:39.899 INFO kablam! warning: type alias is never used: `Url`
Nov 09 10:47:39.899 INFO kablam!  --> src/shortener.rs:4:1
Nov 09 10:47:39.899 INFO kablam!   |
Nov 09 10:47:39.899 INFO kablam! 4 | type Url = String;
Nov 09 10:47:39.899 INFO kablam!   | ^^^^^^^^^^^^^^^^^^
Nov 09 10:47:39.899 INFO kablam! 
Nov 09 10:47:39.899 INFO kablam! warning: struct is never constructed: `World`
Nov 09 10:47:39.899 INFO kablam!  --> src/shortener.rs:6:1
Nov 09 10:47:39.899 INFO kablam!   |
Nov 09 10:47:39.899 INFO kablam! 6 | pub struct World {
Nov 09 10:47:39.899 INFO kablam!   | ^^^^^^^^^^^^^^^^
Nov 09 10:47:39.899 INFO kablam! 
Nov 09 10:47:39.899 INFO kablam! warning: method is never used: `empty`
Nov 09 10:47:39.899 INFO kablam!   --> src/shortener.rs:12:5
Nov 09 10:47:39.899 INFO kablam!    |
Nov 09 10:47:39.899 INFO kablam! 12 |     pub fn empty() -> World {
Nov 09 10:47:39.899 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^
Nov 09 10:47:39.899 INFO kablam! 
Nov 09 10:47:39.899 INFO kablam! warning: method is never used: `shorten`
Nov 09 10:47:39.899 INFO kablam!   --> src/shortener.rs:16:5
Nov 09 10:47:39.899 INFO kablam!    |
Nov 09 10:47:39.899 INFO kablam! 16 |     pub fn shorten(&mut self, url: &Url) -> Token {
Nov 09 10:47:39.899 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 09 10:47:39.899 INFO kablam! 
Nov 09 10:47:39.899 INFO kablam! warning: method is never used: `expand`
Nov 09 10:47:39.899 INFO kablam!   --> src/shortener.rs:25:5
Nov 09 10:47:39.899 INFO kablam!    |
Nov 09 10:47:39.900 INFO kablam! 25 |     pub fn expand(&self, token: Token) -> Option<&Url> {
Nov 09 10:47:39.900 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 09 10:47:39.900 INFO kablam! 
Nov 09 10:47:39.900 INFO kablam! warning: method is never used: `tokenize`
Nov 09 10:47:39.900 INFO kablam!   --> src/shortener.rs:29:5
Nov 09 10:47:39.900 INFO kablam!    |
Nov 09 10:47:39.900 INFO kablam! 29 |     fn tokenize(id: i32) -> String {
Nov 09 10:47:39.900 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 09 10:47:39.900 INFO kablam! 
Nov 09 10:47:40.199 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.86s
Nov 09 10:47:40.207 INFO kablam! su: No module specific data is present
Nov 09 10:47:40.855 INFO running `"docker" "rm" "-f" "05c87db983d28288726f6eee34738403efca5d8298c104d17906ecbdc8cbcdda"`
Nov 09 10:47:41.340 INFO blam! 05c87db983d28288726f6eee34738403efca5d8298c104d17906ecbdc8cbcdda