[INFO] updating cached repository justincampbell/url-shortener-rust
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/justincampbell/url-shortener-rust
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/justincampbell/url-shortener-rust" "work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/justincampbell/url-shortener-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/justincampbell/url-shortener-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/justincampbell/url-shortener-rust" "work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/justincampbell/url-shortener-rust"`
[INFO] [stderr] Cloning into 'work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/justincampbell/url-shortener-rust'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] dea15a889eaf723a4ab9ccfa1a9ca95e078f3b0a
[INFO] sha for GitHub repo justincampbell/url-shortener-rust: dea15a889eaf723a4ab9ccfa1a9ca95e078f3b0a
[INFO] validating manifest of justincampbell/url-shortener-rust on toolchain master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of justincampbell/url-shortener-rust on toolchain try#58b21121d0b447ceb3f1a655155d802191acf044
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing justincampbell/url-shortener-rust
[INFO] finished frobbing justincampbell/url-shortener-rust
[INFO] frobbed toml for justincampbell/url-shortener-rust written to work/ex/pr-61100/sources/master#8869ee03d7f258e1b76a11c6fbb01b5708a9f504/gh/justincampbell/url-shortener-rust/Cargo.toml
[INFO] started frobbing justincampbell/url-shortener-rust
[INFO] finished frobbing justincampbell/url-shortener-rust
[INFO] frobbed toml for justincampbell/url-shortener-rust written to work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/justincampbell/url-shortener-rust/Cargo.toml
[INFO] crate justincampbell/url-shortener-rust already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+8869ee03d7f258e1b76a11c6fbb01b5708a9f504-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/crater-raid/crater/work/local/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache lock
[INFO] checking justincampbell/url-shortener-rust against try#58b21121d0b447ceb3f1a655155d802191acf044 for pr-61100
[INFO] running `"docker" "create" "-v" "/mnt/crater-raid/crater/work/local/target-dirs/pr-61100/worker-7/try#58b21121d0b447ceb3f1a655155d802191acf044:/opt/crater/target:rw,Z" "-v" "/mnt/crater-raid/crater/work/ex/pr-61100/sources/try#58b21121d0b447ceb3f1a655155d802191acf044/gh/justincampbell/url-shortener-rust:/opt/crater/workdir:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/crater-raid/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+58b21121d0b447ceb3f1a655155d802191acf044-alt" "check" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] 265cd6cae6134200c2265d3d01990bb775e15acee875ba04191454cbde8fa9aa
[INFO] running `"docker" "start" "-a" "265cd6cae6134200c2265d3d01990bb775e15acee875ba04191454cbde8fa9aa"`
[INFO] [stderr]     Checking shortener v0.0.1 (/opt/crater/workdir)
[INFO] [stderr] warning: type alias is never used: `Token`
[INFO] [stderr]  --> src/shortener.rs:3:1
[INFO] [stderr]   |
[INFO] [stderr] 3 | type Token = String;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `Url`
[INFO] [stderr]  --> src/shortener.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | type Url = String;
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `World`
[INFO] [stderr]  --> src/shortener.rs:6:1
[INFO] [stderr]   |
[INFO] [stderr] 6 | pub struct World {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `empty`
[INFO] [stderr]   --> src/shortener.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     pub fn empty() -> World {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `shorten`
[INFO] [stderr]   --> src/shortener.rs:16:5
[INFO] [stderr]    |
[INFO] [stderr] 16 |     pub fn shorten(&mut self, url: &Url) -> Token {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `expand`
[INFO] [stderr]   --> src/shortener.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     pub fn expand(&self, token: Token) -> Option<&Url> {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `tokenize`
[INFO] [stderr]   --> src/shortener.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     fn tokenize(id: i32) -> String {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.48s
[INFO] running `"docker" "inspect" "265cd6cae6134200c2265d3d01990bb775e15acee875ba04191454cbde8fa9aa"`
[INFO] running `"docker" "rm" "-f" "265cd6cae6134200c2265d3d01990bb775e15acee875ba04191454cbde8fa9aa"`
[INFO] [stdout] 265cd6cae6134200c2265d3d01990bb775e15acee875ba04191454cbde8fa9aa