[INFO] cloning repository https://github.com/Benestar/rust-model-checker
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Benestar/rust-model-checker" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenestar%2Frust-model-checker", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenestar%2Frust-model-checker'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b78e96efaa5de18e95e5cfcd546ef98512bb2b8d
[INFO] checking Benestar/rust-model-checker against try#b20a093d9fb1ffaa04ae9852cb034864a992bafd for pr-85073
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FBenestar%2Frust-model-checker" "/workspace/builds/worker-3/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-3/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Benestar/rust-model-checker on toolchain b20a093d9fb1ffaa04ae9852cb034864a992bafd
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Benestar/rust-model-checker
[INFO] finished tweaking git repo https://github.com/Benestar/rust-model-checker
[INFO] tweaked toml for git repo https://github.com/Benestar/rust-model-checker written to /workspace/builds/worker-3/source/Cargo.toml
[INFO] crate git repo https://github.com/Benestar/rust-model-checker already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 907e681876c9f4b4faf80fc0465c01874c5e1d064f0bc38fc208db04f58fa1f3
[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" "907e681876c9f4b4faf80fc0465c01874c5e1d064f0bc38fc208db04f58fa1f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "907e681876c9f4b4faf80fc0465c01874c5e1d064f0bc38fc208db04f58fa1f3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "907e681876c9f4b4faf80fc0465c01874c5e1d064f0bc38fc208db04f58fa1f3", kill_on_drop: false }`
[INFO] [stdout] 907e681876c9f4b4faf80fc0465c01874c5e1d064f0bc38fc208db04f58fa1f3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3/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" "+b20a093d9fb1ffaa04ae9852cb034864a992bafd" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 436d7fd1e2bbadabcb6e72b38228eae62078b32f2b60155d3e039fe8aec4545c
[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" "436d7fd1e2bbadabcb6e72b38228eae62078b32f2b60155d3e039fe8aec4545c", kill_on_drop: false }`
[INFO] [stderr]     Checking rust-model-checker v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/buechi.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 |     trans: Box<Fn(&Q, &S) -> HashSet<Q>>,
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Q, &S) -> HashSet<Q>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/buechi.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 |     accepting: Box<Fn(&Q) -> bool>,
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Q) -> bool`
[INFO] [stdout]   |
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/buechi.rs:6:16
[INFO] [stdout]   |
[INFO] [stdout] 6 |     trans: Box<Fn(&Q, &S) -> HashSet<Q>>,
[INFO] [stdout]   |                ^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Q, &S) -> HashSet<Q>`
[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: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/buechi.rs:7:20
[INFO] [stdout]   |
[INFO] [stdout] 7 |     accepting: Box<Fn(&Q) -> bool>,
[INFO] [stdout]   |                    ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&Q) -> bool`
[INFO] [stdout]   |
[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: field is never read: `initial`
[INFO] [stdout]   --> src/buechi.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     initial: HashSet<Q>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `trans`
[INFO] [stdout]   --> src/buechi.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     trans: HashSet<(Q, S, Q)>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `accepting`
[INFO] [stdout]   --> src/buechi.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     accepting: HashSet<Q>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `initial`
[INFO] [stdout]   --> src/buechi.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     initial: HashSet<Q>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `trans`
[INFO] [stdout]   --> src/buechi.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     trans: HashSet<(Q, S, Q)>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field is never read: `accepting`
[INFO] [stdout]   --> src/buechi.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     accepting: HashSet<Q>,
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.57s
[INFO] running `Command { std: "docker" "inspect" "436d7fd1e2bbadabcb6e72b38228eae62078b32f2b60155d3e039fe8aec4545c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "436d7fd1e2bbadabcb6e72b38228eae62078b32f2b60155d3e039fe8aec4545c", kill_on_drop: false }`
[INFO] [stdout] 436d7fd1e2bbadabcb6e72b38228eae62078b32f2b60155d3e039fe8aec4545c