[INFO] cloning repository https://github.com/EFulmer/rust-koans
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/EFulmer/rust-koans" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEFulmer%2Frust-koans", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEFulmer%2Frust-koans'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 134b0f6c91fedc5cc0b447d92a3cfd8e1fc472e9
[INFO] checking EFulmer/rust-koans against try#8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8 for pr-82565
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEFulmer%2Frust-koans" "/workspace/builds/worker-8/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-8/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/EFulmer/rust-koans on toolchain 8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/EFulmer/rust-koans
[INFO] finished tweaking git repo https://github.com/EFulmer/rust-koans
[INFO] tweaked toml for git repo https://github.com/EFulmer/rust-koans written to /workspace/builds/worker-8/source/Cargo.toml
[INFO] crate git repo https://github.com/EFulmer/rust-koans already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] fcca7191d60e6d87d7f4257a9ecf15ce0f59d736253bc21e2023571809113aa4
[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" "fcca7191d60e6d87d7f4257a9ecf15ce0f59d736253bc21e2023571809113aa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "fcca7191d60e6d87d7f4257a9ecf15ce0f59d736253bc21e2023571809113aa4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fcca7191d60e6d87d7f4257a9ecf15ce0f59d736253bc21e2023571809113aa4", kill_on_drop: false }`
[INFO] [stdout] fcca7191d60e6d87d7f4257a9ecf15ce0f59d736253bc21e2023571809113aa4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-8/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:f2f6bcd4b43ebee4e173f653a26493129bdb64017c85f916b780ca7fbdbaa79d" "/opt/rustwide/cargo-home/bin/cargo" "+8e3afc79c11f48cb3acd1be5b3b7de98fe3f93a8" "check" "--frozen" "--all" "--all-targets" "--message-format=json", 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] b7a5be18ea1ad6c7445997443523c07ae8285fd8507bc0e6debbcc8ba878497a
[INFO] running `Command { std: "docker" "start" "-a" "b7a5be18ea1ad6c7445997443523c07ae8285fd8507bc0e6debbcc8ba878497a", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-koans v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/util.rs:8:34
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let actual_any = &actual as &Any;
[INFO] [stdout]   |                                  ^^^ help: use `dyn`: `dyn Any`
[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/util.rs:24:20
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let v = &v as &Any;
[INFO] [stdout]    |                    ^^^ help: use `dyn`: `dyn Any`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `util::*`
[INFO] [stdout]  --> src/about_asserts.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use util::*;
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/util.rs:8:34
[INFO] [stdout]   |
[INFO] [stdout] 8 |     let actual_any = &actual as &Any;
[INFO] [stdout]   |                                  ^^^ help: use `dyn`: `dyn Any`
[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/util.rs:24:20
[INFO] [stdout]    |
[INFO] [stdout] 24 |     let v = &v as &Any;
[INFO] [stdout]    |                    ^^^ help: use `dyn`: `dyn Any`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_true`
[INFO] [stdout]   --> src/util.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn test_true<T: Any + Debug + PartialEq>(v: T) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_eq`
[INFO] [stdout]  --> src/util.rs:6:8
[INFO] [stdout]   |
[INFO] [stdout] 6 | pub fn test_eq<T: Any + Debug, U: Any + Debug + PartialEq>(actual: T, expected: U) 
[INFO] [stdout]   |        ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `test_true`
[INFO] [stdout]   --> src/util.rs:23:8
[INFO] [stdout]    |
[INFO] [stdout] 23 | pub fn test_true<T: Any + Debug + PartialEq>(v: T) {
[INFO] [stdout]    |        ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.62s
[INFO] running `Command { std: "docker" "inspect" "b7a5be18ea1ad6c7445997443523c07ae8285fd8507bc0e6debbcc8ba878497a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "b7a5be18ea1ad6c7445997443523c07ae8285fd8507bc0e6debbcc8ba878497a", kill_on_drop: false }`
[INFO] [stdout] b7a5be18ea1ad6c7445997443523c07ae8285fd8507bc0e6debbcc8ba878497a