[INFO] fetching crate signals 0.0.5...
[INFO] checking signals-0.0.5 against try#cac44d9528e3bbbdaa1537d187bd489ccc5de18c for pr-91141
[INFO] extracting crate signals 0.0.5 into /workspace/builds/worker-86/source
[INFO] validating manifest of crates.io crate signals 0.0.5 on toolchain cac44d9528e3bbbdaa1537d187bd489ccc5de18c
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate signals 0.0.5
[INFO] finished tweaking crates.io crate signals 0.0.5
[INFO] tweaked toml for crates.io crate signals 0.0.5 written to /workspace/builds/worker-86/source/Cargo.toml
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 48e5c46e6d5d11b5ee29d0a9beed0b00354f2b4d130b865e3e3217ac963be0c9
[INFO] running `Command { std: "docker" "start" "-a" "48e5c46e6d5d11b5ee29d0a9beed0b00354f2b4d130b865e3e3217ac963be0c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "48e5c46e6d5d11b5ee29d0a9beed0b00354f2b4d130b865e3e3217ac963be0c9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "48e5c46e6d5d11b5ee29d0a9beed0b00354f2b4d130b865e3e3217ac963be0c9", kill_on_drop: false }`
[INFO] [stdout] 48e5c46e6d5d11b5ee29d0a9beed0b00354f2b4d130b865e3e3217ac963be0c9
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-86/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@sha256:5736fa189c1c60b01babf4b8b698fe57b6ecc41933a7ff2e0b8d7a221459412b" "/opt/rustwide/cargo-home/bin/cargo" "+cac44d9528e3bbbdaa1537d187bd489ccc5de18c" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 3f89a86c2af2e8d53339d3a3970d147c32248d90ac73882d03a327ae7a5c64a7
[INFO] running `Command { std: "docker" "start" "-a" "3f89a86c2af2e8d53339d3a3970d147c32248d90ac73882d03a327ae7a5c64a7", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling memchr v2.4.1
[INFO] [stderr]    Compiling autocfg v1.0.1
[INFO] [stderr]    Compiling libc v0.2.108
[INFO] [stderr]    Compiling miniz_oxide v0.4.4
[INFO] [stderr]     Checking object v0.27.1
[INFO] [stderr]     Checking backtrace v0.3.63
[INFO] [stderr]     Checking failure v0.1.8
[INFO] [stderr]     Checking signals v0.0.5 (/opt/rustwide/workdir)
[INFO] [stdout] warning: associated type `input` should have an upper camel case name
[INFO] [stdout]   --> src/lib.rs:70:10
[INFO] [stdout]    |
[INFO] [stdout] 70 |     type input;
[INFO] [stdout]    |          ^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/lib.rs:73:24
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn emit(&mut self, Self::input);
[INFO] [stdout]    |                        ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Self::input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:81:28
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub type AmEmitter<T> = Am<Emitter<input=T>>;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Emitter<input=T>`
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:82:24
[INFO] [stdout]    |
[INFO] [stdout] 82 | type WmEmitter<T> = Wm<Emitter<input=T>>;
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Emitter<input=T>`
[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] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated type `input` should have an upper camel case name
[INFO] [stdout]   --> src/lib.rs:70:10
[INFO] [stdout]    |
[INFO] [stdout] 70 |     type input;
[INFO] [stdout]    |          ^^^^^ help: convert the identifier to upper camel case (notice the capitalization): `Input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: anonymous parameters are deprecated and will be removed in the next edition
[INFO] [stdout]   --> src/lib.rs:73:24
[INFO] [stdout]    |
[INFO] [stdout] 73 |     fn emit(&mut self, Self::input);
[INFO] [stdout]    |                        ^^^^^^^^^^^ help: try naming the parameter or explicitly ignoring it: `_: Self::input`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(anonymous_parameters)]` on by default
[INFO] [stdout]    = warning: this is accepted in the current edition (Rust 2015) but is a hard error in Rust 2018!
[INFO] [stdout]    = note: for more information, see issue #41686 <https://github.com/rust-lang/rust/issues/41686>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:81:28
[INFO] [stdout]    |
[INFO] [stdout] 81 | pub type AmEmitter<T> = Am<Emitter<input=T>>;
[INFO] [stdout]    |                            ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Emitter<input=T>`
[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 <https://doc.rust-lang.org/nightly/edition-guide/rust-2021/warnings-promoted-to-error.html>
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stdout]   --> src/lib.rs:82:24
[INFO] [stdout]    |
[INFO] [stdout] 82 | type WmEmitter<T> = Wm<Emitter<input=T>>;
[INFO] [stdout]    |                        ^^^^^^^^^^^^^^^^ help: use `dyn`: `dyn Emitter<input=T>`
[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] 
[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 7.52s
[INFO] running `Command { std: "docker" "inspect" "3f89a86c2af2e8d53339d3a3970d147c32248d90ac73882d03a327ae7a5c64a7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f89a86c2af2e8d53339d3a3970d147c32248d90ac73882d03a327ae7a5c64a7", kill_on_drop: false }`
[INFO] [stdout] 3f89a86c2af2e8d53339d3a3970d147c32248d90ac73882d03a327ae7a5c64a7