Oct 12 19:22:40.297 INFO checking justincampbell/url-shortener-rust against try#4021bd0b3c5815b087d6db10ce461e7e4854ade7 for pr-54977
Oct 12 19:22:40.297 INFO running `"docker" "create" "-v" "/mnt/big/crater/./work/local/target-dirs/pr-54977/worker-2/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/target:rw,Z" "-v" "/mnt/big/crater/./work/local/test-source/worker-2/pr-54977/try#4021bd0b3c5815b087d6db10ce461e7e4854ade7:/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 +4021bd0b3c5815b087d6db10ce461e7e4854ade7-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"`
Oct 12 19:22:40.516 INFO blam! 8545937c12029aecf4c54318bd23c952d929e9ced51f02ce746826945423fb9d
Oct 12 19:22:40.522 INFO running `"docker" "start" "-a" "8545937c12029aecf4c54318bd23c952d929e9ced51f02ce746826945423fb9d"`
Oct 12 19:22:41.384 INFO kablam! usermod: no changes
Oct 12 19:22:41.468 INFO kablam!     Checking shortener v0.0.1 (/source)
Oct 12 19:22:41.964 INFO kablam! warning: type alias is never used: `Token`
Oct 12 19:22:41.964 INFO kablam!  --> src/shortener.rs:3:1
Oct 12 19:22:41.964 INFO kablam!   |
Oct 12 19:22:41.964 INFO kablam! 3 | type Token = String;
Oct 12 19:22:41.964 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^
Oct 12 19:22:41.964 INFO kablam!   |
Oct 12 19:22:41.964 INFO kablam!   = note: #[warn(dead_code)] on by default
Oct 12 19:22:41.964 INFO kablam! 
Oct 12 19:22:41.964 INFO kablam! warning: type alias is never used: `Url`
Oct 12 19:22:41.964 INFO kablam!  --> src/shortener.rs:4:1
Oct 12 19:22:41.964 INFO kablam!   |
Oct 12 19:22:41.964 INFO kablam! 4 | type Url = String;
Oct 12 19:22:41.964 INFO kablam!   | ^^^^^^^^^^^^^^^^^^
Oct 12 19:22:41.964 INFO kablam! 
Oct 12 19:22:41.964 INFO kablam! warning: struct is never constructed: `World`
Oct 12 19:22:41.964 INFO kablam!  --> src/shortener.rs:6:1
Oct 12 19:22:41.964 INFO kablam!   |
Oct 12 19:22:41.964 INFO kablam! 6 | pub struct World {
Oct 12 19:22:41.964 INFO kablam!   | ^^^^^^^^^^^^^^^^
Oct 12 19:22:41.964 INFO kablam! 
Oct 12 19:22:41.964 INFO kablam! warning: method is never used: `empty`
Oct 12 19:22:41.964 INFO kablam!   --> src/shortener.rs:12:5
Oct 12 19:22:41.964 INFO kablam!    |
Oct 12 19:22:41.964 INFO kablam! 12 |     pub fn empty() -> World {
Oct 12 19:22:41.964 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 19:22:41.964 INFO kablam! 
Oct 12 19:22:41.964 INFO kablam! warning: method is never used: `shorten`
Oct 12 19:22:41.964 INFO kablam!   --> src/shortener.rs:16:5
Oct 12 19:22:41.964 INFO kablam!    |
Oct 12 19:22:41.964 INFO kablam! 16 |     pub fn shorten(&mut self, url: &Url) -> Token {
Oct 12 19:22:41.964 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 19:22:41.964 INFO kablam! 
Oct 12 19:22:41.964 INFO kablam! warning: method is never used: `expand`
Oct 12 19:22:41.964 INFO kablam!   --> src/shortener.rs:25:5
Oct 12 19:22:41.964 INFO kablam!    |
Oct 12 19:22:41.964 INFO kablam! 25 |     pub fn expand(&self, token: Token) -> Option<&Url> {
Oct 12 19:22:41.964 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 19:22:41.964 INFO kablam! 
Oct 12 19:22:41.964 INFO kablam! warning: method is never used: `tokenize`
Oct 12 19:22:41.964 INFO kablam!   --> src/shortener.rs:29:5
Oct 12 19:22:41.964 INFO kablam!    |
Oct 12 19:22:41.964 INFO kablam! 29 |     fn tokenize(id: i32) -> String {
Oct 12 19:22:41.964 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Oct 12 19:22:41.964 INFO kablam! 
Oct 12 19:22:42.200 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.76s
Oct 12 19:22:42.201 INFO kablam! su: No module specific data is present
Oct 12 19:22:42.813 INFO running `"docker" "rm" "-f" "8545937c12029aecf4c54318bd23c952d929e9ced51f02ce746826945423fb9d"`
Oct 12 19:22:43.088 INFO blam! 8545937c12029aecf4c54318bd23c952d929e9ced51f02ce746826945423fb9d