[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#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FEFulmer%2Frust-koans" "/workspace/builds/worker-14/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-14/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/EFulmer/rust-koans on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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-14/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "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-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 0a375cc75ee5c32e7880008a095d930c7a1ee7c64aec7c5477ed501662a2527c
[INFO] running `Command { std: "docker" "start" "-a" "0a375cc75ee5c32e7880008a095d930c7a1ee7c64aec7c5477ed501662a2527c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "0a375cc75ee5c32e7880008a095d930c7a1ee7c64aec7c5477ed501662a2527c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0a375cc75ee5c32e7880008a095d930c7a1ee7c64aec7c5477ed501662a2527c", kill_on_drop: false }`
[INFO] [stdout] 0a375cc75ee5c32e7880008a095d930c7a1ee7c64aec7c5477ed501662a2527c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-14/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4709688505ecb2c9250941eb1856bee5307775014fa126de2619ee46f4792561
[INFO] running `Command { std: "docker" "start" "-a" "4709688505ecb2c9250941eb1856bee5307775014fa126de2619ee46f4792561", 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]   = 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 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/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]    = 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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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]   = 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 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/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]    = 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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[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: 5 warnings emitted
[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: 3 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.24s
[INFO] running `Command { std: "docker" "inspect" "4709688505ecb2c9250941eb1856bee5307775014fa126de2619ee46f4792561", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4709688505ecb2c9250941eb1856bee5307775014fa126de2619ee46f4792561", kill_on_drop: false }`
[INFO] [stdout] 4709688505ecb2c9250941eb1856bee5307775014fa126de2619ee46f4792561