Nov 01 02:49:33.533 INFO checking justincampbell/url-shortener-rust against try#d7816399d50d407bbce1efe9dbadf8faaaf568fc for pr-55538
Nov 01 02:49:33.534 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55538/worker-1/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-1/pr-55538/try#d7816399d50d407bbce1efe9dbadf8faaaf568fc:/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 +d7816399d50d407bbce1efe9dbadf8faaaf568fc-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 01 02:49:33.809 INFO blam! 9a540acc0311a61b899976959831afceee86fd2c74ff9643b49ca46103d05d4d
Nov 01 02:49:33.809 INFO running `"docker" "start" "-a" "9a540acc0311a61b899976959831afceee86fd2c74ff9643b49ca46103d05d4d"`
Nov 01 02:49:34.432 INFO kablam! usermod: no changes
Nov 01 02:49:34.490 INFO kablam!     Checking shortener v0.0.1 (/source)
Nov 01 02:49:35.405 INFO kablam! warning: type alias is never used: `Token`
Nov 01 02:49:35.405 INFO kablam!  --> src/shortener.rs:3:1
Nov 01 02:49:35.405 INFO kablam!   |
Nov 01 02:49:35.406 INFO kablam! 3 | type Token = String;
Nov 01 02:49:35.406 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^
Nov 01 02:49:35.406 INFO kablam!   |
Nov 01 02:49:35.407 INFO kablam!   = note: #[warn(dead_code)] on by default
Nov 01 02:49:35.407 INFO kablam! 
Nov 01 02:49:35.407 INFO kablam! warning: type alias is never used: `Url`
Nov 01 02:49:35.407 INFO kablam!  --> src/shortener.rs:4:1
Nov 01 02:49:35.408 INFO kablam!   |
Nov 01 02:49:35.408 INFO kablam! 4 | type Url = String;
Nov 01 02:49:35.408 INFO kablam!   | ^^^^^^^^^^^^^^^^^^
Nov 01 02:49:35.408 INFO kablam! 
Nov 01 02:49:35.409 INFO kablam! warning: struct is never constructed: `World`
Nov 01 02:49:35.409 INFO kablam!  --> src/shortener.rs:6:1
Nov 01 02:49:35.409 INFO kablam!   |
Nov 01 02:49:35.409 INFO kablam! 6 | pub struct World {
Nov 01 02:49:35.410 INFO kablam!   | ^^^^^^^^^^^^^^^^
Nov 01 02:49:35.410 INFO kablam! 
Nov 01 02:49:35.410 INFO kablam! warning: method is never used: `empty`
Nov 01 02:49:35.410 INFO kablam!   --> src/shortener.rs:12:5
Nov 01 02:49:35.411 INFO kablam!    |
Nov 01 02:49:35.411 INFO kablam! 12 |     pub fn empty() -> World {
Nov 01 02:49:35.411 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 02:49:35.412 INFO kablam! 
Nov 01 02:49:35.412 INFO kablam! warning: method is never used: `shorten`
Nov 01 02:49:35.412 INFO kablam!   --> src/shortener.rs:16:5
Nov 01 02:49:35.412 INFO kablam!    |
Nov 01 02:49:35.413 INFO kablam! 16 |     pub fn shorten(&mut self, url: &Url) -> Token {
Nov 01 02:49:35.413 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 02:49:35.413 INFO kablam! 
Nov 01 02:49:35.413 INFO kablam! warning: method is never used: `expand`
Nov 01 02:49:35.414 INFO kablam!   --> src/shortener.rs:25:5
Nov 01 02:49:35.414 INFO kablam!    |
Nov 01 02:49:35.414 INFO kablam! 25 |     pub fn expand(&self, token: Token) -> Option<&Url> {
Nov 01 02:49:35.414 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 02:49:35.415 INFO kablam! 
Nov 01 02:49:35.415 INFO kablam! warning: method is never used: `tokenize`
Nov 01 02:49:35.415 INFO kablam!   --> src/shortener.rs:29:5
Nov 01 02:49:35.415 INFO kablam!    |
Nov 01 02:49:35.415 INFO kablam! 29 |     fn tokenize(id: i32) -> String {
Nov 01 02:49:35.416 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 01 02:49:35.416 INFO kablam! 
Nov 01 02:49:35.610 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 1.16s
Nov 01 02:49:35.613 INFO kablam! su: No module specific data is present
Nov 01 02:49:36.458 INFO running `"docker" "rm" "-f" "9a540acc0311a61b899976959831afceee86fd2c74ff9643b49ca46103d05d4d"`
Nov 01 02:49:36.679 INFO blam! 9a540acc0311a61b899976959831afceee86fd2c74ff9643b49ca46103d05d4d