[INFO] fetching crate generic_regex 0.1.0...
[INFO] checking generic_regex-0.1.0 against master#90442458ac46b1d5eed752c316da25450f67285b for pr-81477
[INFO] extracting crate generic_regex 0.1.0 into /workspace/builds/worker-4/source
[INFO] validating manifest of crates.io crate generic_regex 0.1.0 on toolchain 90442458ac46b1d5eed752c316da25450f67285b
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate generic_regex 0.1.0
[INFO] finished tweaking crates.io crate generic_regex 0.1.0
[INFO] tweaked toml for crates.io crate generic_regex 0.1.0 written to /workspace/builds/worker-4/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "fetch" "--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" "ghcr.io/rust-lang/crates-build-env/linux@sha256:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 57308bb77157e2bbb86bff08dbb39cd805952245b1d0f33e62abbcc5e30725b4
[INFO] running `Command { std: "docker" "start" "-a" "57308bb77157e2bbb86bff08dbb39cd805952245b1d0f33e62abbcc5e30725b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "57308bb77157e2bbb86bff08dbb39cd805952245b1d0f33e62abbcc5e30725b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "57308bb77157e2bbb86bff08dbb39cd805952245b1d0f33e62abbcc5e30725b4", kill_on_drop: false }`
[INFO] [stdout] 57308bb77157e2bbb86bff08dbb39cd805952245b1d0f33e62abbcc5e30725b4
[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=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:ea7d7bff36b2ba8ce4de8bba1d2dea90376bc481f1a945a913994a8c492e40c1" "/opt/rustwide/cargo-home/bin/cargo" "+90442458ac46b1d5eed752c316da25450f67285b" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e5ddfa9e842a3906fd9751ae528d17f033e0c690367acddb15deac6303f3db9d
[INFO] running `Command { std: "docker" "start" "-a" "e5ddfa9e842a3906fd9751ae528d17f033e0c690367acddb15deac6303f3db9d", kill_on_drop: false }`
[INFO] [stderr]     Checking generic_regex v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]    --> src/lib.rs:182:35
[INFO] [stdout]     |
[INFO] [stdout] 182 |     fn to_string(&self, t_to_string:&Fn(&T)->String )->String
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&T)->String`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[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 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/lib.rs:299:29
[INFO] [stdout]     |
[INFO] [stdout] 299 |     pub fn map<U:Ord>(&self,f:&Fn(&T)->U) -> RegEx<U>
[INFO] [stdout]     |                                ^^^^^^^^^ help: use `dyn`: `dyn Fn(&T)->U`
[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 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/lib.rs:182:35
[INFO] [stdout]     |
[INFO] [stdout] 182 |     fn to_string(&self, t_to_string:&Fn(&T)->String )->String
[INFO] [stdout]     |                                      ^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(&T)->String`
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(bare_trait_objects)]` on by default
[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 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/lib.rs:299:29
[INFO] [stdout]     |
[INFO] [stdout] 299 |     pub fn map<U:Ord>(&self,f:&Fn(&T)->U) -> RegEx<U>
[INFO] [stdout]     |                                ^^^^^^^^^ help: use `dyn`: `dyn Fn(&T)->U`
[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 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/lib.rs:751:18
[INFO] [stdout]     |
[INFO] [stdout] 751 |     transition: &'a Fn(usize,T)->(usize,Action),//to what state it moves
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(usize,T)->(usize,Action)`
[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 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/lib.rs:751:18
[INFO] [stdout]     |
[INFO] [stdout] 751 |     transition: &'a Fn(usize,T)->(usize,Action),//to what state it moves
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Fn(usize,T)->(usize,Action)`
[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 issue #80165 <https://github.com/rust-lang/rust/issues/80165>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |                 let mut w:Vec<RegEx<T>>=v.iter().map(|e|e.normal_form()).filter(|e|*e!=EmptyString).collect();
[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: variable does not need to be mutable
[INFO] [stdout]    --> src/lib.rs:154:9
[INFO] [stdout]     |
[INFO] [stdout] 154 |                 let mut w:Vec<RegEx<T>>=v.iter().map(|e|e.normal_form()).filter(|e|*e!=EmptyString).collect();
[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: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.35s
[INFO] running `Command { std: "docker" "inspect" "e5ddfa9e842a3906fd9751ae528d17f033e0c690367acddb15deac6303f3db9d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e5ddfa9e842a3906fd9751ae528d17f033e0c690367acddb15deac6303f3db9d", kill_on_drop: false }`
[INFO] [stdout] e5ddfa9e842a3906fd9751ae528d17f033e0c690367acddb15deac6303f3db9d