[INFO] fetching crate xu 0.2.3...
[INFO] checking xu-0.2.3 against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] extracting crate xu 0.2.3 into /workspace/builds/worker-103/source
[INFO] validating manifest of crates.io crate xu 0.2.3 on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate xu 0.2.3
[INFO] finished tweaking crates.io crate xu 0.2.3
[INFO] tweaked toml for crates.io crate xu 0.2.3 written to /workspace/builds/worker-103/source/Cargo.toml
[INFO] crate crates.io crate xu 0.2.3 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 232185c96530ee62488659250076e3d4ac9bf13fd5a24bee0fc67f5cdc9fc24d
[INFO] running `Command { std: "docker" "start" "-a" "232185c96530ee62488659250076e3d4ac9bf13fd5a24bee0fc67f5cdc9fc24d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "232185c96530ee62488659250076e3d4ac9bf13fd5a24bee0fc67f5cdc9fc24d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "232185c96530ee62488659250076e3d4ac9bf13fd5a24bee0fc67f5cdc9fc24d", kill_on_drop: false }`
[INFO] [stdout] 232185c96530ee62488659250076e3d4ac9bf13fd5a24bee0fc67f5cdc9fc24d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-103/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7bac115ec945794d9cc4cc6a4122fb7ba49973cca43eaacdd387a808ceeeb940
[INFO] running `Command { std: "docker" "start" "-a" "7bac115ec945794d9cc4cc6a4122fb7ba49973cca43eaacdd387a808ceeeb940", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.89
[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking xu v0.2.3 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/operations.rs:138:88
[INFO] [stdout]     |
[INFO] [stdout] 138 |     pub fn run (&self, population: Population<Gene>, data: &Data, score_provider: &mut ScoreProvider<Gene, Data>) -> Population<Gene>
[INFO] [stdout]     |                                                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ScoreProvider<Gene, Data>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/operations.rs:152:26
[INFO] [stdout]     |
[INFO] [stdout] 152 |     score_provider: &mut ScoreProvider<Gene, Data>
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ScoreProvider<Gene, Data>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/operations.rs:174:26
[INFO] [stdout]     |
[INFO] [stdout] 174 |     score_provider: &mut ScoreProvider<Gene, Data>
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ScoreProvider<Gene, Data>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/operations.rs:230:26
[INFO] [stdout]     |
[INFO] [stdout] 230 |     score_provider: &mut ScoreProvider<Gene, Data>,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ScoreProvider<Gene, Data>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/operations.rs:138:88
[INFO] [stdout]     |
[INFO] [stdout] 138 |     pub fn run (&self, population: Population<Gene>, data: &Data, score_provider: &mut ScoreProvider<Gene, Data>) -> Population<Gene>
[INFO] [stdout]     |                                                                                        ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ScoreProvider<Gene, Data>`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/operations.rs:152:26
[INFO] [stdout]     |
[INFO] [stdout] 152 |     score_provider: &mut ScoreProvider<Gene, Data>
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ScoreProvider<Gene, Data>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/operations.rs:174:26
[INFO] [stdout]     |
[INFO] [stdout] 174 |     score_provider: &mut ScoreProvider<Gene, Data>
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ScoreProvider<Gene, Data>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/operations.rs:230:26
[INFO] [stdout]     |
[INFO] [stdout] 230 |     score_provider: &mut ScoreProvider<Gene, Data>,
[INFO] [stdout]     |                          ^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn ScoreProvider<Gene, Data>`
[INFO] [stdout]     |
[INFO] [stdout]     = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2021!
[INFO] [stdout]     = note: for more information, see <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/operations.rs:219:13
[INFO] [stdout]     |
[INFO] [stdout] 219 |     for (_, mut agent) in agents {
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/operations.rs:219:13
[INFO] [stdout]     |
[INFO] [stdout] 219 |     for (_, mut agent) in agents {
[INFO] [stdout]     |             ----^^^^^
[INFO] [stdout]     |             |
[INFO] [stdout]     |             help: remove this `mut`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 3.86s
[INFO] running `Command { std: "docker" "inspect" "7bac115ec945794d9cc4cc6a4122fb7ba49973cca43eaacdd387a808ceeeb940", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7bac115ec945794d9cc4cc6a4122fb7ba49973cca43eaacdd387a808ceeeb940", kill_on_drop: false }`
[INFO] [stdout] 7bac115ec945794d9cc4cc6a4122fb7ba49973cca43eaacdd387a808ceeeb940