Sep 03 18:08:59.047 INFO checking justincampbell/url-shortener-rust against try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0 for pr-53893
Sep 03 18:08:59.047 INFO running: cargo +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets
Sep 03 18:08:59.048 INFO running `"docker" "create" "-v" "/home/ec2-user/crater/./work/local/test-source/worker-1/pr-53893/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/pr-53893/worker-1/try#6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0:/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 +6b43b862fabb13a0ce2a5371ea1e77ee1674b7e0-alt check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-m" "2G" "crater"`
Sep 03 18:08:59.314 INFO blam! 524ba27dc568e090ca21213ff50e426298c92f7985a61688007d14e9b1f744cf
Sep 03 18:08:59.317 INFO running `"docker" "start" "-a" "524ba27dc568e090ca21213ff50e426298c92f7985a61688007d14e9b1f744cf"`
Sep 03 18:09:00.188 INFO kablam!     Checking shortener v0.0.1 (file:///source)
Sep 03 18:09:00.500 INFO kablam! warning: type alias is never used: `Token`
Sep 03 18:09:00.500 INFO kablam!  --> src/shortener.rs:3:1
Sep 03 18:09:00.500 INFO kablam!   |
Sep 03 18:09:00.500 INFO kablam! 3 | type Token = String;
Sep 03 18:09:00.500 INFO kablam!   | ^^^^^^^^^^^^^^^^^^^^
Sep 03 18:09:00.500 INFO kablam!   |
Sep 03 18:09:00.500 INFO kablam!   = note: #[warn(dead_code)] on by default
Sep 03 18:09:00.500 INFO kablam! 
Sep 03 18:09:00.501 INFO kablam! warning: type alias is never used: `Url`
Sep 03 18:09:00.501 INFO kablam!  --> src/shortener.rs:4:1
Sep 03 18:09:00.501 INFO kablam!   |
Sep 03 18:09:00.501 INFO kablam! 4 | type Url = String;
Sep 03 18:09:00.501 INFO kablam!   | ^^^^^^^^^^^^^^^^^^
Sep 03 18:09:00.501 INFO kablam! 
Sep 03 18:09:00.501 INFO kablam! warning: struct is never constructed: `World`
Sep 03 18:09:00.501 INFO kablam!  --> src/shortener.rs:6:1
Sep 03 18:09:00.501 INFO kablam!   |
Sep 03 18:09:00.501 INFO kablam! 6 | pub struct World {
Sep 03 18:09:00.502 INFO kablam!   | ^^^^^^^^^^^^^^^^
Sep 03 18:09:00.502 INFO kablam! 
Sep 03 18:09:00.502 INFO kablam! warning: method is never used: `empty`
Sep 03 18:09:00.502 INFO kablam!   --> src/shortener.rs:12:5
Sep 03 18:09:00.502 INFO kablam!    |
Sep 03 18:09:00.502 INFO kablam! 12 |     pub fn empty() -> World {
Sep 03 18:09:00.502 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^
Sep 03 18:09:00.502 INFO kablam! 
Sep 03 18:09:00.502 INFO kablam! warning: method is never used: `shorten`
Sep 03 18:09:00.502 INFO kablam!   --> src/shortener.rs:16:5
Sep 03 18:09:00.502 INFO kablam!    |
Sep 03 18:09:00.502 INFO kablam! 16 |     pub fn shorten(&mut self, url: &Url) -> Token {
Sep 03 18:09:00.502 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 03 18:09:00.502 INFO kablam! 
Sep 03 18:09:00.502 INFO kablam! warning: method is never used: `expand`
Sep 03 18:09:00.502 INFO kablam!   --> src/shortener.rs:25:5
Sep 03 18:09:00.502 INFO kablam!    |
Sep 03 18:09:00.502 INFO kablam! 25 |     pub fn expand(&self, token: Token) -> Option<&Url> {
Sep 03 18:09:00.502 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 03 18:09:00.502 INFO kablam! 
Sep 03 18:09:00.502 INFO kablam! warning: method is never used: `tokenize`
Sep 03 18:09:00.502 INFO kablam!   --> src/shortener.rs:29:5
Sep 03 18:09:00.502 INFO kablam!    |
Sep 03 18:09:00.502 INFO kablam! 29 |     fn tokenize(id: i32) -> String {
Sep 03 18:09:00.502 INFO kablam!    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Sep 03 18:09:00.502 INFO kablam! 
Sep 03 18:09:00.585 INFO kablam!     Finished dev [unoptimized + debuginfo] target(s) in 0.43s
Sep 03 18:09:00.589 INFO kablam! su: No module specific data is present
Sep 03 18:09:01.078 INFO running `"docker" "rm" "-f" "524ba27dc568e090ca21213ff50e426298c92f7985a61688007d14e9b1f744cf"`
Sep 03 18:09:01.254 INFO blam! 524ba27dc568e090ca21213ff50e426298c92f7985a61688007d14e9b1f744cf