[INFO] cloning repository https://github.com/mverleg/prover
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/mverleg/prover" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmverleg%2Fprover", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmverleg%2Fprover'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 5f42a6f9fed24c439c53dcbbfa59ceba5b44361e
[INFO] building mverleg/prover against master#ff34b919075f35a1787659e9c448a34b06bab8de for issue-85264
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmverleg%2Fprover" "/workspace/builds/worker-2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/mverleg/prover on toolchain ff34b919075f35a1787659e9c448a34b06bab8de
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/mverleg/prover
[INFO] finished tweaking git repo https://github.com/mverleg/prover
[INFO] tweaked toml for git repo https://github.com/mverleg/prover written to /workspace/builds/worker-2/source/Cargo.toml
[INFO] crate git repo https://github.com/mverleg/prover already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+ff34b919075f35a1787659e9c448a34b06bab8de" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+ff34b919075f35a1787659e9c448a34b06bab8de" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 2cc28a11fe42e5528b214dd068e26bbf7045ebfaae5b8d0e05b4f76e651cb8cc
[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" "2cc28a11fe42e5528b214dd068e26bbf7045ebfaae5b8d0e05b4f76e651cb8cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2cc28a11fe42e5528b214dd068e26bbf7045ebfaae5b8d0e05b4f76e651cb8cc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2cc28a11fe42e5528b214dd068e26bbf7045ebfaae5b8d0e05b4f76e651cb8cc", kill_on_drop: false }`
[INFO] [stdout] 2cc28a11fe42e5528b214dd068e26bbf7045ebfaae5b8d0e05b4f76e651cb8cc
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2/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" "+ff34b919075f35a1787659e9c448a34b06bab8de" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 95d12f44d9ec12b64ab19afe04b7aa494d36393848d50a598a19bbf777461bd7
[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" "95d12f44d9ec12b64ab19afe04b7aa494d36393848d50a598a19bbf777461bd7", kill_on_drop: false }`
[INFO] [stderr]    Compiling bound_prover v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/logic/mod.rs:14:13
[INFO] [stdout]    |
[INFO] [stdout] 14 |     Num(&'a Num<T>),
[INFO] [stdout]    |             ^^^^^^ help: use `dyn`: `dyn Num<T>`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout]    = warning: this was previously accepted by the compiler but is being phased out; it will become a hard error in the 2021 edition!
[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: `num::Num`
[INFO] [stdout]  --> src/logic/proposition.rs:6:5
[INFO] [stdout]   |
[INFO] [stdout] 6 | use num::Num;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `logic::eql::Eql`
[INFO] [stdout]  --> src/notation.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 | use logic::eql::Eql;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `logic::gt::Gt`
[INFO] [stdout]  --> src/notation.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use logic::gt::Gt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `logic::lt::Lt`
[INFO] [stdout]  --> src/notation.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 | use logic::lt::Lt;
[INFO] [stdout]   |     ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `num::Num`
[INFO] [stdout]  --> src/notation.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 | use num::Num;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0038]: the trait `Num` cannot be made into an object
[INFO] [stdout]    --> src/logic/mod.rs:14:13
[INFO] [stdout]     |
[INFO] [stdout] 14  |     Num(&'a Num<T>),
[INFO] [stdout]     |             ^^^^^^ `Num` cannot be made into an object
[INFO] [stdout]     |
[INFO] [stdout] note: for a trait to be "object safe" it needs to allow building a vtable to allow the call to be resolvable dynamically; for more information visit <https://doc.rust-lang.org/reference/items/traits.html#object-safety>
[INFO] [stdout]    --> src/num/mod.rs:6:50
[INFO] [stdout]     |
[INFO] [stdout] 6   | pub trait Num<T>: Difficulty + Display + Clone + PartialEq + Eq + Hash where T: Nr {
[INFO] [stdout]     |           ---                                    ^^^^^^^^^ ...because it uses `Self` as a type parameter
[INFO] [stdout]     |           |
[INFO] [stdout]     |           this trait cannot be made into an object...
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error; 6 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0038`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `bound_prover`
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `Command { std: "docker" "inspect" "95d12f44d9ec12b64ab19afe04b7aa494d36393848d50a598a19bbf777461bd7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "95d12f44d9ec12b64ab19afe04b7aa494d36393848d50a598a19bbf777461bd7", kill_on_drop: false }`
[INFO] [stdout] 95d12f44d9ec12b64ab19afe04b7aa494d36393848d50a598a19bbf777461bd7
