[INFO] fetching crate funfsm 0.2.1...
[INFO] checking funfsm-0.2.1 against try#7014e13d5becc920d4bea3cd87942c8a13d359bf+rustflags=-Dtail_expr_drop_order for pr-129864
[INFO] extracting crate funfsm 0.2.1 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate funfsm 0.2.1 on toolchain 7014e13d5becc920d4bea3cd87942c8a13d359bf
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate funfsm 0.2.1
[INFO] finished tweaking crates.io crate funfsm 0.2.1
[INFO] tweaked toml for crates.io crate funfsm 0.2.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 1 package to latest compatible version
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 4f074e10a1705d5d7fa7c2ba55f8393aa7fcbb3a81492b8e9626928465cfaff9
[INFO] running `Command { std: "docker" "start" "-a" "4f074e10a1705d5d7fa7c2ba55f8393aa7fcbb3a81492b8e9626928465cfaff9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4f074e10a1705d5d7fa7c2ba55f8393aa7fcbb3a81492b8e9626928465cfaff9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4f074e10a1705d5d7fa7c2ba55f8393aa7fcbb3a81492b8e9626928465cfaff9", kill_on_drop: false }`
[INFO] [stdout] 4f074e10a1705d5d7fa7c2ba55f8393aa7fcbb3a81492b8e9626928465cfaff9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/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 -Dtail_expr_drop_order" "-e" "RUSTDOCFLAGS=--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:ceb6ea022f8a89cebbe621bb4987e73a935bd40dfbb726f832cfff4742a5b95a" "/opt/rustwide/cargo-home/bin/cargo" "+7014e13d5becc920d4bea3cd87942c8a13d359bf" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] ebc0890dd05c690d58489fec8024a6c48648c8602370160a34d567956a7c5df8
[INFO] running `Command { std: "docker" "start" "-a" "ebc0890dd05c690d58489fec8024a6c48648c8602370160a34d567956a7c5df8", kill_on_drop: false }`
[INFO] [stderr] warning: no edition set: defaulting to the 2015 edition while the latest is 2021
[INFO] [stderr]     Checking assert_matches v1.5.0
[INFO] [stderr]     Checking funfsm v0.2.1 (/opt/rustwide/workdir)
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/fsm_check.rs:18:32
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let (from, init_ctx) = try!(self.check_preconditions());
[INFO] [stdout]    |                                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/fsm_check.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         try!(self.constraints.check_preconditions(from, &ctx));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/fsm_check.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         try!(self.constraints.check_invariants(&ctx));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/fsm_check.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         try!(self.constraints.check_invariants(&final_ctx));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/constraints.rs:4:34
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub type Pred<T: FsmTypes> = Box<Fn(&T::Context) -> bool>;
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub type Pred<T: FsmTypes> = Box<dyn Fn(&T::Context) -> bool>;
[INFO] [stdout]   |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/fsm_check.rs:18:32
[INFO] [stdout]    |
[INFO] [stdout] 18 |         let (from, init_ctx) = try!(self.check_preconditions());
[INFO] [stdout]    |                                ^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/fsm_check.rs:25:9
[INFO] [stdout]    |
[INFO] [stdout] 25 |         try!(self.constraints.check_preconditions(from, &ctx));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/fsm_check.rs:26:9
[INFO] [stdout]    |
[INFO] [stdout] 26 |         try!(self.constraints.check_invariants(&ctx));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated macro `try`: use the `?` operator instead
[INFO] [stdout]   --> src/fsm_check.rs:36:9
[INFO] [stdout]    |
[INFO] [stdout] 36 |         try!(self.constraints.check_invariants(&final_ctx));
[INFO] [stdout]    |         ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]  --> src/constraints.rs:4:34
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub type Pred<T: FsmTypes> = Box<Fn(&T::Context) -> bool>;
[INFO] [stdout]   |                                  ^^^^^^^^^^^^^^^^^^^^^^^
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout]   = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] help: if this is an object-safe trait, use `dyn`
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub type Pred<T: FsmTypes> = Box<dyn Fn(&T::Context) -> bool>;
[INFO] [stdout]   |                                  +++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters in type aliases are not enforced
[INFO] [stdout]  --> src/constraints.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub type Pred<T: FsmTypes> = Box<Fn(&T::Context) -> bool>;
[INFO] [stdout]   |                  ^^^^^^^^ will not be checked at usage sites of the type alias
[INFO] [stdout]   |
[INFO] [stdout]   = note: this is a known limitation of the type checker that may be lifted in a future edition.
[INFO] [stdout]           see issue #112792 <https://github.com/rust-lang/rust/issues/112792> for more information
[INFO] [stdout]   = help: add `#![feature(lazy_type_alias)]` to the crate attributes to enable the desired semantics
[INFO] [stdout]   = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stdout] help: remove this bound
[INFO] [stdout]   |
[INFO] [stdout] 4 - pub type Pred<T: FsmTypes> = Box<Fn(&T::Context) -> bool>;
[INFO] [stdout] 4 + pub type Pred<T> = Box<Fn(&T::Context) -> bool>;
[INFO] [stdout]   |
[INFO] [stdout] help: fully qualify this associated type
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub type Pred<T: FsmTypes> = Box<Fn(&<T as /* Trait */>::Context) -> bool>;
[INFO] [stdout]   |                                      +  +++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters in type aliases are not enforced
[INFO] [stdout]  --> src/constraints.rs:4:18
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub type Pred<T: FsmTypes> = Box<Fn(&T::Context) -> bool>;
[INFO] [stdout]   |                  ^^^^^^^^ will not be checked at usage sites of the type alias
[INFO] [stdout]   |
[INFO] [stdout]   = note: this is a known limitation of the type checker that may be lifted in a future edition.
[INFO] [stdout]           see issue #112792 <https://github.com/rust-lang/rust/issues/112792> for more information
[INFO] [stdout]   = help: add `#![feature(lazy_type_alias)]` to the crate attributes to enable the desired semantics
[INFO] [stdout]   = note: `#[warn(type_alias_bounds)]` on by default
[INFO] [stdout] help: remove this bound
[INFO] [stdout]   |
[INFO] [stdout] 4 - pub type Pred<T: FsmTypes> = Box<Fn(&T::Context) -> bool>;
[INFO] [stdout] 4 + pub type Pred<T> = Box<Fn(&T::Context) -> bool>;
[INFO] [stdout]   |
[INFO] [stdout] help: fully qualify this associated type
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub type Pred<T: FsmTypes> = Box<Fn(&<T as /* Trait */>::Context) -> bool>;
[INFO] [stdout]   |                                      +  +++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters in type aliases are not enforced
[INFO] [stdout]  --> src/constraints.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub type TransitionCheck<T: FsmTypes>
[INFO] [stdout]   |                             ^^^^^^^^ will not be checked at usage sites of the type alias
[INFO] [stdout]   |
[INFO] [stdout]   = note: this is a known limitation of the type checker that may be lifted in a future edition.
[INFO] [stdout]           see issue #112792 <https://github.com/rust-lang/rust/issues/112792> for more information
[INFO] [stdout]   = help: add `#![feature(lazy_type_alias)]` to the crate attributes to enable the desired semantics
[INFO] [stdout] help: remove this bound
[INFO] [stdout]   |
[INFO] [stdout] 5 - pub type TransitionCheck<T: FsmTypes>
[INFO] [stdout] 5 + pub type TransitionCheck<T>
[INFO] [stdout]   |
[INFO] [stdout] help: fully qualify this associated type
[INFO] [stdout]   |
[INFO] [stdout] 6 |     = fn(&<T as /* Trait */>::Context, &T::Context, &T::Msg, &Vec<T::Output>) -> Result<(), String>;
[INFO] [stdout]   |           +  +++++++++++++++
[INFO] [stdout] help: fully qualify this associated type
[INFO] [stdout]   |
[INFO] [stdout] 6 |     = fn(&T::Context, &<T as /* Trait */>::Context, &T::Msg, &Vec<T::Output>) -> Result<(), String>;
[INFO] [stdout]   |                        +  +++++++++++++++
[INFO] [stdout] help: fully qualify this associated type
[INFO] [stdout]   |
[INFO] [stdout] 6 |     = fn(&T::Context, &T::Context, &<T as /* Trait */>::Msg, &Vec<T::Output>) -> Result<(), String>;
[INFO] [stdout]   |                                     +  +++++++++++++++
[INFO] [stdout] help: fully qualify this associated type
[INFO] [stdout]   |
[INFO] [stdout] 6 |     = fn(&T::Context, &T::Context, &T::Msg, &Vec<<T as /* Trait */>::Output>) -> Result<(), String>;
[INFO] [stdout]   |                                                  +  +++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: bounds on generic parameters in type aliases are not enforced
[INFO] [stdout]  --> src/constraints.rs:5:29
[INFO] [stdout]   |
[INFO] [stdout] 5 | pub type TransitionCheck<T: FsmTypes>
[INFO] [stdout]   |                             ^^^^^^^^ will not be checked at usage sites of the type alias
[INFO] [stdout]   |
[INFO] [stdout]   = note: this is a known limitation of the type checker that may be lifted in a future edition.
[INFO] [stdout]           see issue #112792 <https://github.com/rust-lang/rust/issues/112792> for more information
[INFO] [stdout]   = help: add `#![feature(lazy_type_alias)]` to the crate attributes to enable the desired semantics
[INFO] [stdout] help: remove this bound
[INFO] [stdout]   |
[INFO] [stdout] 5 - pub type TransitionCheck<T: FsmTypes>
[INFO] [stdout] 5 + pub type TransitionCheck<T>
[INFO] [stdout]   |
[INFO] [stdout] help: fully qualify this associated type
[INFO] [stdout]   |
[INFO] [stdout] 6 |     = fn(&<T as /* Trait */>::Context, &T::Context, &T::Msg, &Vec<T::Output>) -> Result<(), String>;
[INFO] [stdout]   |           +  +++++++++++++++
[INFO] [stdout] help: fully qualify this associated type
[INFO] [stdout]   |
[INFO] [stdout] 6 |     = fn(&T::Context, &<T as /* Trait */>::Context, &T::Msg, &Vec<T::Output>) -> Result<(), String>;
[INFO] [stdout]   |                        +  +++++++++++++++
[INFO] [stdout] help: fully qualify this associated type
[INFO] [stdout]   |
[INFO] [stdout] 6 |     = fn(&T::Context, &T::Context, &<T as /* Trait */>::Msg, &Vec<T::Output>) -> Result<(), String>;
[INFO] [stdout]   |                                     +  +++++++++++++++
[INFO] [stdout] help: fully qualify this associated type
[INFO] [stdout]   |
[INFO] [stdout] 6 |     = fn(&T::Context, &T::Context, &T::Msg, &Vec<<T as /* Trait */>::Output>) -> Result<(), String>;
[INFO] [stdout]   |                                                  +  +++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "ebc0890dd05c690d58489fec8024a6c48648c8602370160a34d567956a7c5df8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ebc0890dd05c690d58489fec8024a6c48648c8602370160a34d567956a7c5df8", kill_on_drop: false }`
[INFO] [stdout] ebc0890dd05c690d58489fec8024a6c48648c8602370160a34d567956a7c5df8