[INFO] fetching crate metaheuristics 1.0.15...
[INFO] checking metaheuristics-1.0.15 against master#430feb24a46993e5073c1bb1b39da190d83fa2bf for pr-78363
[INFO] extracting crate metaheuristics 1.0.15 into /workspace/builds/worker-13/source
[INFO] validating manifest of crates.io crate metaheuristics 1.0.15 on toolchain 430feb24a46993e5073c1bb1b39da190d83fa2bf
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate metaheuristics 1.0.15
[INFO] finished tweaking crates.io crate metaheuristics 1.0.15
[INFO] tweaked toml for crates.io crate metaheuristics 1.0.15 written to /workspace/builds/worker-13/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d1c508d7ca331de094198d0d74757949ffaecd51454c99e8e1cafd3f789ec55b
[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" "d1c508d7ca331de094198d0d74757949ffaecd51454c99e8e1cafd3f789ec55b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1c508d7ca331de094198d0d74757949ffaecd51454c99e8e1cafd3f789ec55b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1c508d7ca331de094198d0d74757949ffaecd51454c99e8e1cafd3f789ec55b", kill_on_drop: false }`
[INFO] [stdout] d1c508d7ca331de094198d0d74757949ffaecd51454c99e8e1cafd3f789ec55b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-13/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:d92eaeed33fa75130ca1ee6c8a01d1ffb62bac859dfdfb3450e3e5d1c0146529" "/opt/rustwide/cargo-home/bin/cargo" "+430feb24a46993e5073c1bb1b39da190d83fa2bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0766d1508560b0cd571ebec06ab9b3a5d5f69a16651b2debf5cad4b52ca8506a
[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" "0766d1508560b0cd571ebec06ab9b3a5d5f69a16651b2debf5cad4b52ca8506a", kill_on_drop: false }`
[INFO] [stderr]     Checking time v0.1.44
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking metaheuristics v1.0.15 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/hill_climbing/random_restarts/mod.rs:44:31
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn solve<T>(problem: &mut Metaheuristics<T>, runtime: Duration, probability: f64) -> T {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Metaheuristics<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/hill_climbing/mod.rs:39:31
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn solve<T>(problem: &mut Metaheuristics<T>, runtime: Duration) -> T {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Metaheuristics<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/random_search/mod.rs:30:31
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn solve<T>(problem: &mut Metaheuristics<T>, runtime: Duration) -> T {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Metaheuristics<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/simulated_annealing/mod.rs:64:31
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn solve<T>(problem: &mut Metaheuristics<T>, runtime: Duration) -> T {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Metaheuristics<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/hill_climbing/random_restarts/mod.rs:44:31
[INFO] [stdout]    |
[INFO] [stdout] 44 | pub fn solve<T>(problem: &mut Metaheuristics<T>, runtime: Duration, probability: f64) -> T {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Metaheuristics<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/hill_climbing/mod.rs:39:31
[INFO] [stdout]    |
[INFO] [stdout] 39 | pub fn solve<T>(problem: &mut Metaheuristics<T>, runtime: Duration) -> T {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Metaheuristics<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/random_search/mod.rs:30:31
[INFO] [stdout]    |
[INFO] [stdout] 30 | pub fn solve<T>(problem: &mut Metaheuristics<T>, runtime: Duration) -> T {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Metaheuristics<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/simulated_annealing/mod.rs:64:31
[INFO] [stdout]    |
[INFO] [stdout] 64 | pub fn solve<T>(problem: &mut Metaheuristics<T>, runtime: Duration) -> T {
[INFO] [stdout]    |                               ^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Metaheuristics<T>`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.55s
[INFO] running `Command { std: "docker" "inspect" "0766d1508560b0cd571ebec06ab9b3a5d5f69a16651b2debf5cad4b52ca8506a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0766d1508560b0cd571ebec06ab9b3a5d5f69a16651b2debf5cad4b52ca8506a", kill_on_drop: false }`
[INFO] [stdout] 0766d1508560b0cd571ebec06ab9b3a5d5f69a16651b2debf5cad4b52ca8506a