[INFO] cloning repository https://github.com/Mathieu-Desrochers/Learning-Rust
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Mathieu-Desrochers/Learning-Rust" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMathieu-Desrochers%2FLearning-Rust", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMathieu-Desrochers%2FLearning-Rust'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9d11ddc65499029b740fbfe10a373792bea40b37
[INFO] testing Mathieu-Desrochers/Learning-Rust against beta-2020-07-24 for beta-1.46-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FMathieu-Desrochers%2FLearning-Rust" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Mathieu-Desrochers/Learning-Rust on toolchain beta-2020-07-24
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Mathieu-Desrochers/Learning-Rust
[INFO] finished tweaking git repo https://github.com/Mathieu-Desrochers/Learning-Rust
[INFO] tweaked toml for git repo https://github.com/Mathieu-Desrochers/Learning-Rust written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/Mathieu-Desrochers/Learning-Rust already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2020-07-24" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb9277b2eaca5743763b70bc0e1d23fa160940ddb8ad4ed22647eb319afb4114
[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" "cb9277b2eaca5743763b70bc0e1d23fa160940ddb8ad4ed22647eb319afb4114", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb9277b2eaca5743763b70bc0e1d23fa160940ddb8ad4ed22647eb319afb4114", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb9277b2eaca5743763b70bc0e1d23fa160940ddb8ad4ed22647eb319afb4114", kill_on_drop: false }`
[INFO] [stdout] cb9277b2eaca5743763b70bc0e1d23fa160940ddb8ad4ed22647eb319afb4114
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 8d4267ea98391dbe8ef08306667fb606197bdf67925ba406e21271a8ed0dacd4
[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" "8d4267ea98391dbe8ef08306667fb606197bdf67925ba406e21271a8ed0dacd4", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:355:10
[INFO] [stdout]     |
[INFO] [stdout] 355 |         0...100 => "Small",
[INFO] [stdout]     |          ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:421:14
[INFO] [stdout]     |
[INFO] [stdout] 421 |     let x1: &Eatable = &12;
[INFO] [stdout]     |              ^^^^^^^ help: use `dyn`: `dyn Eatable`
[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:422:36
[INFO] [stdout]     |
[INFO] [stdout] 422 |     fn have_quick_snack(_eatable: &Eatable) {}
[INFO] [stdout]     |                                    ^^^^^^^ help: use `dyn`: `dyn Eatable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:430:25
[INFO] [stdout]     |
[INFO] [stdout] 430 |     let mut x2: Vec<Box<Eatable>> = Vec::new();
[INFO] [stdout]     |                         ^^^^^^^ help: use `dyn`: `dyn Eatable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:474:28
[INFO] [stdout]     |
[INFO] [stdout] 474 |     let mut closures: Vec<&Fn(i32) -> i32> = Vec::new();
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i32) -> i32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:488:15
[INFO] [stdout]     |
[INFO] [stdout] 488 |     let _z2: &FnMut(i32) = &y2;
[INFO] [stdout]     |               ^^^^^^^^^^ help: use `dyn`: `dyn FnMut(i32)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.36s
[INFO] running `Command { std: "docker" "inspect" "8d4267ea98391dbe8ef08306667fb606197bdf67925ba406e21271a8ed0dacd4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8d4267ea98391dbe8ef08306667fb606197bdf67925ba406e21271a8ed0dacd4", kill_on_drop: false }`
[INFO] [stdout] 8d4267ea98391dbe8ef08306667fb606197bdf67925ba406e21271a8ed0dacd4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 0faf58e7250c9c2ce054a1e3cd20bb53e4280a58d2a3fb4ebe60eccff351a9f7
[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" "0faf58e7250c9c2ce054a1e3cd20bb53e4280a58d2a3fb4ebe60eccff351a9f7", kill_on_drop: false }`
[INFO] [stderr]    Compiling learning-rust v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:355:10
[INFO] [stdout]     |
[INFO] [stdout] 355 |         0...100 => "Small",
[INFO] [stdout]     |          ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:421:14
[INFO] [stdout]     |
[INFO] [stdout] 421 |     let x1: &Eatable = &12;
[INFO] [stdout]     |              ^^^^^^^ help: use `dyn`: `dyn Eatable`
[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:422:36
[INFO] [stdout]     |
[INFO] [stdout] 422 |     fn have_quick_snack(_eatable: &Eatable) {}
[INFO] [stdout]     |                                    ^^^^^^^ help: use `dyn`: `dyn Eatable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:430:25
[INFO] [stdout]     |
[INFO] [stdout] 430 |     let mut x2: Vec<Box<Eatable>> = Vec::new();
[INFO] [stdout]     |                         ^^^^^^^ help: use `dyn`: `dyn Eatable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:474:28
[INFO] [stdout]     |
[INFO] [stdout] 474 |     let mut closures: Vec<&Fn(i32) -> i32> = Vec::new();
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i32) -> i32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:488:15
[INFO] [stdout]     |
[INFO] [stdout] 488 |     let _z2: &FnMut(i32) = &y2;
[INFO] [stdout]     |               ^^^^^^^^^^ help: use `dyn`: `dyn FnMut(i32)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: `...` range patterns are deprecated
[INFO] [stdout]    --> src/main.rs:355:10
[INFO] [stdout]     |
[INFO] [stdout] 355 |         0...100 => "Small",
[INFO] [stdout]     |          ^^^ help: use `..=` for an inclusive range
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:421:14
[INFO] [stdout]     |
[INFO] [stdout] 421 |     let x1: &Eatable = &12;
[INFO] [stdout]     |              ^^^^^^^ help: use `dyn`: `dyn Eatable`
[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:422:36
[INFO] [stdout]     |
[INFO] [stdout] 422 |     fn have_quick_snack(_eatable: &Eatable) {}
[INFO] [stdout]     |                                    ^^^^^^^ help: use `dyn`: `dyn Eatable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:430:25
[INFO] [stdout]     |
[INFO] [stdout] 430 |     let mut x2: Vec<Box<Eatable>> = Vec::new();
[INFO] [stdout]     |                         ^^^^^^^ help: use `dyn`: `dyn Eatable`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:474:28
[INFO] [stdout]     |
[INFO] [stdout] 474 |     let mut closures: Vec<&Fn(i32) -> i32> = Vec::new();
[INFO] [stdout]     |                            ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i32) -> i32`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/main.rs:488:15
[INFO] [stdout]     |
[INFO] [stdout] 488 |     let _z2: &FnMut(i32) = &y2;
[INFO] [stdout]     |               ^^^^^^^^^^ help: use `dyn`: `dyn FnMut(i32)`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.87s
[INFO] running `Command { std: "docker" "inspect" "0faf58e7250c9c2ce054a1e3cd20bb53e4280a58d2a3fb4ebe60eccff351a9f7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0faf58e7250c9c2ce054a1e3cd20bb53e4280a58d2a3fb4ebe60eccff351a9f7", kill_on_drop: false }`
[INFO] [stdout] 0faf58e7250c9c2ce054a1e3cd20bb53e4280a58d2a3fb4ebe60eccff351a9f7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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=warn" "-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:a636fd89d022f18117e1dc8fb37a0a009933cdbbe082814857f0e2024962d47c" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2020-07-24" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 95f1e5c77d556488f25179466df100afa42451d0a55693df5835b4e08b1e0e38
[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" "95f1e5c77d556488f25179466df100afa42451d0a55693df5835b4e08b1e0e38", kill_on_drop: false }`
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/main.rs:355:10
[INFO] [stderr]     |
[INFO] [stderr] 355 |         0...100 => "Small",
[INFO] [stderr]     |          ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:421:14
[INFO] [stderr]     |
[INFO] [stderr] 421 |     let x1: &Eatable = &12;
[INFO] [stderr]     |              ^^^^^^^ help: use `dyn`: `dyn Eatable`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:422:36
[INFO] [stderr]     |
[INFO] [stderr] 422 |     fn have_quick_snack(_eatable: &Eatable) {}
[INFO] [stderr]     |                                    ^^^^^^^ help: use `dyn`: `dyn Eatable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:430:25
[INFO] [stderr]     |
[INFO] [stderr] 430 |     let mut x2: Vec<Box<Eatable>> = Vec::new();
[INFO] [stderr]     |                         ^^^^^^^ help: use `dyn`: `dyn Eatable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:474:28
[INFO] [stderr]     |
[INFO] [stderr] 474 |     let mut closures: Vec<&Fn(i32) -> i32> = Vec::new();
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i32) -> i32`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:488:15
[INFO] [stderr]     |
[INFO] [stderr] 488 |     let _z2: &FnMut(i32) = &y2;
[INFO] [stderr]     |               ^^^^^^^^^^ help: use `dyn`: `dyn FnMut(i32)`
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/main.rs:355:10
[INFO] [stderr]     |
[INFO] [stderr] 355 |         0...100 => "Small",
[INFO] [stderr]     |          ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:421:14
[INFO] [stderr]     |
[INFO] [stderr] 421 |     let x1: &Eatable = &12;
[INFO] [stderr]     |              ^^^^^^^ help: use `dyn`: `dyn Eatable`
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:422:36
[INFO] [stderr]     |
[INFO] [stderr] 422 |     fn have_quick_snack(_eatable: &Eatable) {}
[INFO] [stderr]     |                                    ^^^^^^^ help: use `dyn`: `dyn Eatable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:430:25
[INFO] [stderr]     |
[INFO] [stderr] 430 |     let mut x2: Vec<Box<Eatable>> = Vec::new();
[INFO] [stderr]     |                         ^^^^^^^ help: use `dyn`: `dyn Eatable`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:474:28
[INFO] [stderr]     |
[INFO] [stderr] 474 |     let mut closures: Vec<&Fn(i32) -> i32> = Vec::new();
[INFO] [stderr]     |                            ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(i32) -> i32`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]    --> src/main.rs:488:15
[INFO] [stderr]     |
[INFO] [stderr] 488 |     let _z2: &FnMut(i32) = &y2;
[INFO] [stderr]     |               ^^^^^^^^^^ help: use `dyn`: `dyn FnMut(i32)`
[INFO] [stderr] 
[INFO] [stderr] warning: 6 warnings emitted
[INFO] [stderr] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/learning_rust-9e60625d3897a53a
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test unit_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/rustwide/target/debug/deps/integration_tests-976397fe4f08a15d
[INFO] [stdout] 
[INFO] [stdout] running 1 test
[INFO] [stdout] test integration_test ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 1 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "95f1e5c77d556488f25179466df100afa42451d0a55693df5835b4e08b1e0e38", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95f1e5c77d556488f25179466df100afa42451d0a55693df5835b4e08b1e0e38", kill_on_drop: false }`
[INFO] [stdout] 95f1e5c77d556488f25179466df100afa42451d0a55693df5835b4e08b1e0e38