[INFO] updating cached repository https://github.com/jgoodesign/rust-fun
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "-c" "remote.origin.fetch=refs/heads/*:refs/heads/*" "fetch" "origin" "--force" "--prune", kill_on_drop: false }`
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eb50091fd23129865a1aef7c79cd55ec073ac9bd
[INFO] checking jgoodesign/rust-fun against try#85cc1486e1f000dce4bb8e1b3cfab2b654b102a8 for pr-73323
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgoodesign%2Frust-fun" "/workspace/builds/worker-4/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jgoodesign/rust-fun on toolchain 85cc1486e1f000dce4bb8e1b3cfab2b654b102a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/jgoodesign/rust-fun
[INFO] finished tweaking git repo https://github.com/jgoodesign/rust-fun
[INFO] tweaked toml for git repo https://github.com/jgoodesign/rust-fun written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] crate git repo https://github.com/jgoodesign/rust-fun already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 62cd4acb70c0ee6ba67e66ed2d279fe7569325e344126d313b47e2462edbaf5b
[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" "62cd4acb70c0ee6ba67e66ed2d279fe7569325e344126d313b47e2462edbaf5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "62cd4acb70c0ee6ba67e66ed2d279fe7569325e344126d313b47e2462edbaf5b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "62cd4acb70c0ee6ba67e66ed2d279fe7569325e344126d313b47e2462edbaf5b", kill_on_drop: false }`
[INFO] [stdout] 62cd4acb70c0ee6ba67e66ed2d279fe7569325e344126d313b47e2462edbaf5b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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" "MAP_USER_ID=0" "-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" "--network" "none" "rustops/crates-build-env@sha256:819119df93c0f5eca3f29186f14981ef29945a311854d7222af07488600a2584" "/opt/rustwide/cargo-home/bin/cargo" "+85cc1486e1f000dce4bb8e1b3cfab2b654b102a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 08506ccdfbd437de471539e60816acc1ac4ba675b9840f6313ea5282cbbd80c1
[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" "08506ccdfbd437de471539e60816acc1ac4ba675b9840f6313ea5282cbbd80c1", kill_on_drop: false }`
[INFO] [stderr]     Checking learning v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:11:23
[INFO] [stdout]    |
[INFO] [stdout] 11 |     reducers: Vec<&'a Fn(Action, T) -> T>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Action, T) -> 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/main.rs:28:44
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn add_reducer(&mut self, reducer: &'a Fn(Action, T) -> T) {
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Action, T) -> T`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:117:29
[INFO] [stdout]     |
[INFO] [stdout] 117 | fn add_boxed(a: u32) -> Box<Fn(u32) -> u32> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u32) -> u32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/main.rs:11:23
[INFO] [stdout]    |
[INFO] [stdout] 11 |     reducers: Vec<&'a Fn(Action, T) -> T>,
[INFO] [stdout]    |                       ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Action, T) -> 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/main.rs:28:44
[INFO] [stdout]    |
[INFO] [stdout] 28 |     fn add_reducer(&mut self, reducer: &'a Fn(Action, T) -> T) {
[INFO] [stdout]    |                                            ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Action, T) -> T`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:117:29
[INFO] [stdout]     |
[INFO] [stdout] 117 | fn add_boxed(a: u32) -> Box<Fn(u32) -> u32> {
[INFO] [stdout]     |                             ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u32) -> u32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.67s
[INFO] running `Command { std: "docker" "inspect" "08506ccdfbd437de471539e60816acc1ac4ba675b9840f6313ea5282cbbd80c1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "08506ccdfbd437de471539e60816acc1ac4ba675b9840f6313ea5282cbbd80c1", kill_on_drop: false }`
[INFO] [stdout] 08506ccdfbd437de471539e60816acc1ac4ba675b9840f6313ea5282cbbd80c1