[INFO] cloning repository https://github.com/comex/owning_ref_bug
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/comex/owning_ref_bug" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomex%2Fowning_ref_bug", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomex%2Fowning_ref_bug'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 60f0cb6838506bd1e0fb527927256eb8a2a4e656
[INFO] checking comex/owning_ref_bug against try#8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346 for pr-86194
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fcomex%2Fowning_ref_bug" "/workspace/builds/worker-7/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-7/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/comex/owning_ref_bug on toolchain 8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/comex/owning_ref_bug
[INFO] finished tweaking git repo https://github.com/comex/owning_ref_bug
[INFO] tweaked toml for git repo https://github.com/comex/owning_ref_bug written to /workspace/builds/worker-7/source/Cargo.toml
[INFO] crate git repo https://github.com/comex/owning_ref_bug already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d2f4544b893d2956c6d37496617e0f12d9831932711b69e6b5e851ab626421a4
[INFO] running `Command { std: "docker" "start" "-a" "d2f4544b893d2956c6d37496617e0f12d9831932711b69e6b5e851ab626421a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d2f4544b893d2956c6d37496617e0f12d9831932711b69e6b5e851ab626421a4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2f4544b893d2956c6d37496617e0f12d9831932711b69e6b5e851ab626421a4", kill_on_drop: false }`
[INFO] [stdout] d2f4544b893d2956c6d37496617e0f12d9831932711b69e6b5e851ab626421a4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7/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@sha256:20528e8c29e4536546f0102ce88568b16ea7538393a33fcca951030f7af10457" "/opt/rustwide/cargo-home/bin/cargo" "+8552849d5ae3b6c66b89a0ac2e9c1e3ef5cde346" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d7fefa30a6269cebb481e0b479df01b14f2121c3713d72f8a953e4af7eb717eb
[INFO] running `Command { std: "docker" "start" "-a" "d7fefa30a6269cebb481e0b479df01b14f2121c3713d72f8a953e4af7eb717eb", kill_on_drop: false }`
[INFO] [stderr]     Checking owning_ref v0.4.1
[INFO] [stderr]     Checking owning_ref_bug v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `owning_ref::OwningRefMut`
[INFO] [stdout]  --> src/main.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use owning_ref::OwningRefMut;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::cell::RefCell`
[INFO] [stdout]  --> src/main.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::cell::RefCell;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0601]: `main` function not found in crate `owning_ref_bug`
[INFO] [stdout]   --> src/main.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / use owning_ref::OwningRefMut;
[INFO] [stdout] 2  | | use std::cell::RefCell;
[INFO] [stdout] 3  | |
[INFO] [stdout] 4  | | #[test]
[INFO] [stdout] ...  |
[INFO] [stdout] 19 | |     assert_eq!(*or2, 42);
[INFO] [stdout] 20 | | }
[INFO] [stdout]    | |_^ consider adding a `main` function to `src/main.rs`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 2 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0601`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `owning_ref_bug`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "d7fefa30a6269cebb481e0b479df01b14f2121c3713d72f8a953e4af7eb717eb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d7fefa30a6269cebb481e0b479df01b14f2121c3713d72f8a953e4af7eb717eb", kill_on_drop: false }`
[INFO] [stdout] d7fefa30a6269cebb481e0b479df01b14f2121c3713d72f8a953e4af7eb717eb