[INFO] fetching crate clustering 0.2.1...
[INFO] checking clustering-0.2.1 against try#c659ee110de67e82444e4b6c8407c1a9af9c2cf6 for pr-145608-1
[INFO] extracting crate clustering 0.2.1 into /workspace/builds/worker-0-tc2/source
[INFO] started tweaking crates.io crate clustering 0.2.1
[INFO] finished tweaking crates.io crate clustering 0.2.1
[INFO] tweaked toml for crates.io crate clustering 0.2.1 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate clustering 0.2.1 on toolchain c659ee110de67e82444e4b6c8407c1a9af9c2cf6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 54 packages to latest compatible versions
[INFO] [stderr]       Adding env_logger v0.10.2 (available: v0.11.8)
[INFO] [stderr]       Adding rand v0.8.5 (available: v0.9.2)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 309770d6727d7ea821e2675b756146e3790a1b0679562248adf143333ee95f5f
[INFO] running `Command { std: "docker" "start" "-a" "309770d6727d7ea821e2675b756146e3790a1b0679562248adf143333ee95f5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "309770d6727d7ea821e2675b756146e3790a1b0679562248adf143333ee95f5f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "309770d6727d7ea821e2675b756146e3790a1b0679562248adf143333ee95f5f", kill_on_drop: false }`
[INFO] [stdout] 309770d6727d7ea821e2675b756146e3790a1b0679562248adf143333ee95f5f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/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" "RUSTDOCFLAGS=--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:7ad1b28ee6f5f7f699f6cf7015098d6ccdd96d6f2d78dd06228f5b4c9faf309c" "/opt/rustwide/cargo-home/bin/cargo" "+c659ee110de67e82444e4b6c8407c1a9af9c2cf6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 44bce3714821ad1fc5c36a8824473c829115d0ce5c9cc119b1aadfd52172d87a
[INFO] running `Command { std: "docker" "start" "-a" "44bce3714821ad1fc5c36a8824473c829115d0ce5c9cc119b1aadfd52172d87a", kill_on_drop: false }`
[INFO] [stderr]     Checking clustering v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:173:41
[INFO] [stdout]     |
[INFO] [stdout] 173 | pub fn kmeans<T: Elem>(k: usize, elems: &[T], iter: usize) -> Clustering<T> {
[INFO] [stdout]     |                                         ^^^^                  ------------- the same lifetime is hidden here
[INFO] [stdout]     |                                         |
[INFO] [stdout]     |                                         the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 173 | pub fn kmeans<T: Elem>(k: usize, elems: &[T], iter: usize) -> Clustering<'_, T> {
[INFO] [stdout]     |                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: hiding a lifetime that's elided elsewhere is confusing
[INFO] [stdout]    --> src/lib.rs:173:41
[INFO] [stdout]     |
[INFO] [stdout] 173 | pub fn kmeans<T: Elem>(k: usize, elems: &[T], iter: usize) -> Clustering<T> {
[INFO] [stdout]     |                                         ^^^^                  ------------- the same lifetime is hidden here
[INFO] [stdout]     |                                         |
[INFO] [stdout]     |                                         the lifetime is elided here
[INFO] [stdout]     |
[INFO] [stdout]     = help: the same lifetime is referred to in inconsistent ways, making the signature confusing
[INFO] [stdout]     = note: `#[warn(mismatched_lifetime_syntaxes)]` on by default
[INFO] [stdout] help: use `'_` for type paths
[INFO] [stdout]     |
[INFO] [stdout] 173 | pub fn kmeans<T: Elem>(k: usize, elems: &[T], iter: usize) -> Clustering<'_, T> {
[INFO] [stdout]     |                                                                          +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.28s
[INFO] running `Command { std: "docker" "inspect" "44bce3714821ad1fc5c36a8824473c829115d0ce5c9cc119b1aadfd52172d87a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "44bce3714821ad1fc5c36a8824473c829115d0ce5c9cc119b1aadfd52172d87a", kill_on_drop: false }`
[INFO] [stdout] 44bce3714821ad1fc5c36a8824473c829115d0ce5c9cc119b1aadfd52172d87a