[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] testing mverleg/prover against 1.49.0 for beta-1.50-1 [INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmverleg%2Fprover" "/workspace/builds/worker-4/source", kill_on_drop: false }` [INFO] [stderr] Cloning into '/workspace/builds/worker-4/source'... [INFO] [stderr] done. [INFO] validating manifest of git repo https://github.com/mverleg/prover on toolchain 1.49.0 [INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.49.0" "read-manifest" "--manifest-path" "Cargo.toml", 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-4/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" "+1.49.0" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }` [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }` [INFO] [stdout] b6b929323b487ae4f93bc98b0c17a7d2f47c8315b3ff6975bcdb96ad99524b39 [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" "b6b929323b487ae4f93bc98b0c17a7d2f47c8315b3ff6975bcdb96ad99524b39", kill_on_drop: false }` [INFO] running `Command { std: "docker" "inspect" "b6b929323b487ae4f93bc98b0c17a7d2f47c8315b3ff6975bcdb96ad99524b39", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "b6b929323b487ae4f93bc98b0c17a7d2f47c8315b3ff6975bcdb96ad99524b39", kill_on_drop: false }` [INFO] [stdout] b6b929323b487ae4f93bc98b0c17a7d2f47c8315b3ff6975bcdb96ad99524b39 [INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4/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=warn" "-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:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+1.49.0" "build" "--frozen" "--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] d9ba77c2cd5d2acd1653beaef549783fae183a5b8ae953cbf9692272e94b5a33 [INFO] running `Command { std: "docker" "start" "-a" "d9ba77c2cd5d2acd1653beaef549783fae183a5b8ae953cbf9692272e94b5a33", kill_on_drop: false }` [INFO] [stderr] Blocking waiting for file lock on package cache [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), [INFO] [stdout] | ^^^^^^ help: use `dyn`: `dyn Num` [INFO] [stdout] | [INFO] [stdout] = note: `#[warn(bare_trait_objects)]` on by default [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), [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 [INFO] [stdout] --> src/num/mod.rs:6:50 [INFO] [stdout] | [INFO] [stdout] 6 | pub trait Num: 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" "d9ba77c2cd5d2acd1653beaef549783fae183a5b8ae953cbf9692272e94b5a33", kill_on_drop: false }` [INFO] running `Command { std: "docker" "rm" "-f" "d9ba77c2cd5d2acd1653beaef549783fae183a5b8ae953cbf9692272e94b5a33", kill_on_drop: false }` [INFO] [stdout] d9ba77c2cd5d2acd1653beaef549783fae183a5b8ae953cbf9692272e94b5a33