[INFO] cloning 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" "clone" "--bare" "https://github.com/jgoodesign/rust-fun" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgoodesign%2Frust-fun", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgoodesign%2Frust-fun'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] eb50091fd23129865a1aef7c79cd55ec073ac9bd
[INFO] testing jgoodesign/rust-fun against master#432e145bd5a974c5b6f4dd9b352891bd7502b69d for pr-87041
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fjgoodesign%2Frust-fun" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/jgoodesign/rust-fun on toolchain 432e145bd5a974c5b6f4dd9b352891bd7502b69d
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", 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-0/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" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 9410d0e4b6aaef02dfcc556d6c657cb55f7c607457c27a8bacc02274d4536f0e
[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" "9410d0e4b6aaef02dfcc556d6c657cb55f7c607457c27a8bacc02274d4536f0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "9410d0e4b6aaef02dfcc556d6c657cb55f7c607457c27a8bacc02274d4536f0e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "9410d0e4b6aaef02dfcc556d6c657cb55f7c607457c27a8bacc02274d4536f0e", kill_on_drop: false }`
[INFO] [stdout] 9410d0e4b6aaef02dfcc556d6c657cb55f7c607457c27a8bacc02274d4536f0e
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cd7bf2e8b986a26b7bdc42ee6d6eb54f1033f8e29af869379d09413102165a31
[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" "cd7bf2e8b986a26b7bdc42ee6d6eb54f1033f8e29af869379d09413102165a31", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.95s
[INFO] running `Command { std: "docker" "inspect" "cd7bf2e8b986a26b7bdc42ee6d6eb54f1033f8e29af869379d09413102165a31", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd7bf2e8b986a26b7bdc42ee6d6eb54f1033f8e29af869379d09413102165a31", kill_on_drop: false }`
[INFO] [stdout] cd7bf2e8b986a26b7bdc42ee6d6eb54f1033f8e29af869379d09413102165a31
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 959ddd70949ed1a6a3b6cd9fa52106817be611e4dc821b8fa774050599542f78
[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" "959ddd70949ed1a6a3b6cd9fa52106817be611e4dc821b8fa774050599542f78", kill_on_drop: false }`
[INFO] [stderr]    Compiling 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]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.71s
[INFO] running `Command { std: "docker" "inspect" "959ddd70949ed1a6a3b6cd9fa52106817be611e4dc821b8fa774050599542f78", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "959ddd70949ed1a6a3b6cd9fa52106817be611e4dc821b8fa774050599542f78", kill_on_drop: false }`
[INFO] [stdout] 959ddd70949ed1a6a3b6cd9fa52106817be611e4dc821b8fa774050599542f78
[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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+432e145bd5a974c5b6f4dd9b352891bd7502b69d" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 8d1ee0ee79509251bcf21789df1570ea432ef17a2c19580fadcc51792faa8c83
[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" "8d1ee0ee79509251bcf21789df1570ea432ef17a2c19580fadcc51792faa8c83", kill_on_drop: false }`
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:11:23
[INFO] [stderr]    |
[INFO] [stderr] 11 |     reducers: Vec<&'a Fn(Action, T) -> T>,
[INFO] [stderr]    |                       ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Action, T) -> T`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/main.rs:28:44
[INFO] [stderr]    |
[INFO] [stderr] 28 |     fn add_reducer(&mut self, reducer: &'a Fn(Action, T) -> T) {
[INFO] [stderr]    |                                            ^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(Action, T) -> T`
[INFO] [stderr]    |
[INFO] [stderr]    = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]    = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:117:29
[INFO] [stderr]     |
[INFO] [stderr] 117 | fn add_boxed(a: u32) -> Box<Fn(u32) -> u32> {
[INFO] [stderr]     |                             ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(u32) -> u32`
[INFO] [stderr]     |
[INFO] [stderr]     = warning: this is accepted in the current edition (Rust 2018) but is a hard error in Rust 2021!
[INFO] [stderr]     = note: for more information, see issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stderr] 
[INFO] [stderr] warning: 3 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.05s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/learning-3d89390f39bd6dbb)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "8d1ee0ee79509251bcf21789df1570ea432ef17a2c19580fadcc51792faa8c83", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d1ee0ee79509251bcf21789df1570ea432ef17a2c19580fadcc51792faa8c83", kill_on_drop: false }`
[INFO] [stdout] 8d1ee0ee79509251bcf21789df1570ea432ef17a2c19580fadcc51792faa8c83