[INFO] cloning repository https://github.com/justincampbell/url-shortener-rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/justincampbell/url-shortener-rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustincampbell%2Furl-shortener-rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustincampbell%2Furl-shortener-rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] dea15a889eaf723a4ab9ccfa1a9ca95e078f3b0a
[INFO] checking justincampbell/url-shortener-rust against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjustincampbell%2Furl-shortener-rust" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/justincampbell/url-shortener-rust on toolchain a609fb45efad59dfd459c76e50899be9f0583b5a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/justincampbell/url-shortener-rust
[INFO] finished tweaking git repo https://github.com/justincampbell/url-shortener-rust
[INFO] tweaked toml for git repo https://github.com/justincampbell/url-shortener-rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/justincampbell/url-shortener-rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] [stdout] a807db1ca50377c91e2347fc49e38e81f0123fedeaef22c7ba8ba124db2ba7dd
[INFO] running `Command { std: "docker" "start" "-a" "a807db1ca50377c91e2347fc49e38e81f0123fedeaef22c7ba8ba124db2ba7dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a807db1ca50377c91e2347fc49e38e81f0123fedeaef22c7ba8ba124db2ba7dd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a807db1ca50377c91e2347fc49e38e81f0123fedeaef22c7ba8ba124db2ba7dd", kill_on_drop: false }`
[INFO] [stdout] a807db1ca50377c91e2347fc49e38e81f0123fedeaef22c7ba8ba124db2ba7dd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "rustops/crates-build-env@sha256:b8eeb62f26c39b23691079a6cb6de528d8e88b4d71a8f6b1d30f8ba7d9c16de9" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 1d2ed50ec5aae0d0a39062e6c57ead9e7b51f66c65465d026e097082c823cf18
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "1d2ed50ec5aae0d0a39062e6c57ead9e7b51f66c65465d026e097082c823cf18", kill_on_drop: false }`
[INFO] [stderr]     Checking shortener v0.0.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: type alias is never used: `Token`
[INFO] [stdout]  --> src/shortener.rs:3:1
[INFO] [stdout]   |
[INFO] [stdout] 3 | type Token = String;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `Url`
[INFO] [stdout]  --> src/shortener.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | type Url = String;
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `World`
[INFO] [stdout]  --> src/shortener.rs:6:12
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub struct World {
[INFO] [stdout]   |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `empty`
[INFO] [stdout]   --> src/shortener.rs:12:12
[INFO] [stdout]    |
[INFO] [stdout] 12 |     pub fn empty() -> World {
[INFO] [stdout]    |            ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `shorten`
[INFO] [stdout]   --> src/shortener.rs:16:12
[INFO] [stdout]    |
[INFO] [stdout] 16 |     pub fn shorten(&mut self, url: &Url) -> Token {
[INFO] [stdout]    |            ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `expand`
[INFO] [stdout]   --> src/shortener.rs:25:12
[INFO] [stdout]    |
[INFO] [stdout] 25 |     pub fn expand(&self, token: Token) -> Option<&Url> {
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `tokenize`
[INFO] [stdout]   --> src/shortener.rs:29:8
[INFO] [stdout]    |
[INFO] [stdout] 29 |     fn tokenize(id: i32) -> String {
[INFO] [stdout]    |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.29s
[INFO] running `Command { std: "docker" "inspect" "1d2ed50ec5aae0d0a39062e6c57ead9e7b51f66c65465d026e097082c823cf18", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1d2ed50ec5aae0d0a39062e6c57ead9e7b51f66c65465d026e097082c823cf18", kill_on_drop: false }`
[INFO] [stdout] 1d2ed50ec5aae0d0a39062e6c57ead9e7b51f66c65465d026e097082c823cf18