[INFO] fetching crate stackbt_automata_impl 0.1.2...
[INFO] checking stackbt_automata_impl-0.1.2 against master#b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18 for pr-79470
[INFO] extracting crate stackbt_automata_impl 0.1.2 into /workspace/builds/worker-10/source
[INFO] validating manifest of crates.io crate stackbt_automata_impl 0.1.2 on toolchain b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "read-manifest" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] started tweaking crates.io crate stackbt_automata_impl 0.1.2
[INFO] finished tweaking crates.io crate stackbt_automata_impl 0.1.2
[INFO] tweaked toml for crates.io crate stackbt_automata_impl 0.1.2 written to /workspace/builds/worker-10/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "fetch" "--locked" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] c4c96540701a470d6c40ee99d8a3ef8341f95510f80490d3a92a24eb8019f381
[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" "c4c96540701a470d6c40ee99d8a3ef8341f95510f80490d3a92a24eb8019f381", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "c4c96540701a470d6c40ee99d8a3ef8341f95510f80490d3a92a24eb8019f381", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "c4c96540701a470d6c40ee99d8a3ef8341f95510f80490d3a92a24eb8019f381", kill_on_drop: false }`
[INFO] [stdout] c4c96540701a470d6c40ee99d8a3ef8341f95510f80490d3a92a24eb8019f381
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-10/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" "rustops/crates-build-env@sha256:c8ac004eab7d63a0ad09a2dde3d3353ba464f767bee4de425dc8f74c46a1905e" "/opt/rustwide/cargo-home/bin/cargo" "+b7ebc6b0c1ba3c27ebb17c0b496ece778ef11e18" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 79b70678f415403182b7f20375ef32ef76accd0875dd02271a83d5f8fb627417
[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" "79b70678f415403182b7f20375ef32ef76accd0875dd02271a83d5f8fb627417", kill_on_drop: false }`
[INFO] [stderr]     Checking stackbt_automata_impl v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/automaton.rs:39:42
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn as_fnmut<'t>(&'t mut self) -> Box<FnMut(&Self::Input)->Self::Action+'t> where 
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&Self::Input)->Self::Action+'t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/automaton.rs:50:32
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn into_fnmut(self) -> Box<FnMut(&Self::Input) -> Self::Action + 'k> where 
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&Self::Input) -> Self::Action + 'k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/automaton.rs:71:49
[INFO] [stdout]    |
[INFO] [stdout] 71 |       fn boxed_into_fnmut(self: Box<Self>) -> Box<FnMut(&Self::Input) -> 
[INFO] [stdout]    |  _________________________________________________^
[INFO] [stdout] 72 | |         Self::Action + 'k> where 
[INFO] [stdout]    | |_________________________^
[INFO] [stdout]    |
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn boxed_into_fnmut(self: Box<Self>) -> Box<dyn FnMut(&Self::Input) -> 
[INFO] [stdout] 72 |         Self::Action + 'k> where 
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/automaton.rs:94:34
[INFO] [stdout]    |
[INFO] [stdout] 94 | impl<'k, I, A> Automaton<'k> for FnMut(&I) -> A + 'k where 
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&I) -> A + 'k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/automaton.rs:39:42
[INFO] [stdout]    |
[INFO] [stdout] 39 |     fn as_fnmut<'t>(&'t mut self) -> Box<FnMut(&Self::Input)->Self::Action+'t> where 
[INFO] [stdout]    |                                          ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&Self::Input)->Self::Action+'t`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/automaton.rs:50:32
[INFO] [stdout]    |
[INFO] [stdout] 50 |     fn into_fnmut(self) -> Box<FnMut(&Self::Input) -> Self::Action + 'k> where 
[INFO] [stdout]    |                                ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&Self::Input) -> Self::Action + 'k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/automaton.rs:71:49
[INFO] [stdout]    |
[INFO] [stdout] 71 |       fn boxed_into_fnmut(self: Box<Self>) -> Box<FnMut(&Self::Input) -> 
[INFO] [stdout]    |  _________________________________________________^
[INFO] [stdout] 72 | |         Self::Action + 'k> where 
[INFO] [stdout]    | |_________________________^
[INFO] [stdout]    |
[INFO] [stdout] help: use `dyn`
[INFO] [stdout]    |
[INFO] [stdout] 71 |     fn boxed_into_fnmut(self: Box<Self>) -> Box<dyn FnMut(&Self::Input) -> 
[INFO] [stdout] 72 |         Self::Action + 'k> where 
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/automaton.rs:94:34
[INFO] [stdout]    |
[INFO] [stdout] 94 | impl<'k, I, A> Automaton<'k> for FnMut(&I) -> A + 'k where 
[INFO] [stdout]    |                                  ^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn FnMut(&I) -> A + 'k`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/automaton.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let mut this = self;
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 5 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `state`
[INFO] [stdout]    --> src/map_wrappers.rs:375:30
[INFO] [stdout]     |
[INFO] [stdout] 375 |         fn step(input: &i64, state: &mut ()) -> i64 {
[INFO] [stdout]     |                              ^^^^^ help: if this is intentional, prefix it with an underscore: `_state`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_variables)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `input`
[INFO] [stdout]    --> src/map_wrappers.rs:431:17
[INFO] [stdout]     |
[INFO] [stdout] 431 |         fn step(input: &i64, state: &mut i64) -> i64{
[INFO] [stdout]     |                 ^^^^^ help: if this is intentional, prefix it with an underscore: `_input`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]   --> src/automaton.rs:42:13
[INFO] [stdout]    |
[INFO] [stdout] 42 |         let mut this = self;
[INFO] [stdout]    |             ----^^^^
[INFO] [stdout]    |             |
[INFO] [stdout]    |             help: remove this `mut`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 7 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.45s
[INFO] running `Command { std: "docker" "inspect" "79b70678f415403182b7f20375ef32ef76accd0875dd02271a83d5f8fb627417", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "79b70678f415403182b7f20375ef32ef76accd0875dd02271a83d5f8fb627417", kill_on_drop: false }`
[INFO] [stdout] 79b70678f415403182b7f20375ef32ef76accd0875dd02271a83d5f8fb627417