[INFO] fetching crate rootfind 0.7.0...
[INFO] checking rootfind-0.7.0 against master#a609fb45efad59dfd459c76e50899be9f0583b5a for pr-80579
[INFO] extracting crate rootfind 0.7.0 into /workspace/builds/worker-0/source
[INFO] validating manifest of crates.io crate rootfind 0.7.0 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 crates.io crate rootfind 0.7.0
[INFO] finished tweaking crates.io crate rootfind 0.7.0
[INFO] tweaked toml for crates.io crate rootfind 0.7.0 written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/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] b78d0627be46f5db2861646ed96916200c41befdbd3822ad7a53543d856fe9c7
[INFO] running `Command { std: "docker" "start" "-a" "b78d0627be46f5db2861646ed96916200c41befdbd3822ad7a53543d856fe9c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "b78d0627be46f5db2861646ed96916200c41befdbd3822ad7a53543d856fe9c7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b78d0627be46f5db2861646ed96916200c41befdbd3822ad7a53543d856fe9c7", kill_on_drop: false }`
[INFO] [stdout] b78d0627be46f5db2861646ed96916200c41befdbd3822ad7a53543d856fe9c7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+a609fb45efad59dfd459c76e50899be9f0583b5a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] b22048a5aca03c2a285769df4f72efb36927e77f0cf5adef81df4daa1275df58
[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" "b22048a5aca03c2a285769df4f72efb36927e77f0cf5adef81df4daa1275df58", kill_on_drop: false }`
[INFO] [stderr]     Checking rootfind v0.7.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/solver.rs:326:16
[INFO] [stdout]     |
[INFO] [stdout] 326 |         f: Box<Fn(f64) -> f64>,
[INFO] [stdout]     |                ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[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/solver.rs:327:17
[INFO] [stdout]     |
[INFO] [stdout] 327 |         df: Box<Fn(f64) -> f64>,
[INFO] [stdout]     |                 ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/solver.rs:328:18
[INFO] [stdout]     |
[INFO] [stdout] 328 |         d2f: Box<Fn(f64) -> f64>,
[INFO] [stdout]     |                  ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(f64) -> f64`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.01s
[INFO] running `Command { std: "docker" "inspect" "b22048a5aca03c2a285769df4f72efb36927e77f0cf5adef81df4daa1275df58", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b22048a5aca03c2a285769df4f72efb36927e77f0cf5adef81df4daa1275df58", kill_on_drop: false }`
[INFO] [stdout] b22048a5aca03c2a285769df4f72efb36927e77f0cf5adef81df4daa1275df58