[INFO] fetching crate specializer 1.0.0...
[INFO] building specializer-1.0.0 against try#4987e9d4227139400384ab59296ffee3b0fb1183 for pr-146237-2
[INFO] extracting crate specializer 1.0.0 into /workspace/builds/worker-1-tc2/source
[INFO] started tweaking crates.io crate specializer 1.0.0
[INFO] finished tweaking crates.io crate specializer 1.0.0
[INFO] tweaked toml for crates.io crate specializer 1.0.0 written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate specializer 1.0.0 on toolchain 4987e9d4227139400384ab59296ffee3b0fb1183
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate specializer 1.0.0 already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb3ab59df50288a7e4035d29b52e3b89d5a940d65875d5980b6f64bd80079e0d
[INFO] running `Command { std: "docker" "start" "-a" "cb3ab59df50288a7e4035d29b52e3b89d5a940d65875d5980b6f64bd80079e0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb3ab59df50288a7e4035d29b52e3b89d5a940d65875d5980b6f64bd80079e0d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb3ab59df50288a7e4035d29b52e3b89d5a940d65875d5980b6f64bd80079e0d", kill_on_drop: false }`
[INFO] [stdout] cb3ab59df50288a7e4035d29b52e3b89d5a940d65875d5980b6f64bd80079e0d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] e60f12b321ec3e773d4605fc995725a25fd9aa317bbe836f49b6834521d17d85
[INFO] running `Command { std: "docker" "start" "-a" "e60f12b321ec3e773d4605fc995725a25fd9aa317bbe836f49b6834521d17d85", kill_on_drop: false }`
[INFO] [stderr]    Compiling specializer v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/api.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 25 |     <(dyn Any + 'static)>::downcast_mut::<Option<U>>(&mut Some(ty))?.take()
[INFO] [stdout]    |      ^                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 25 -     <(dyn Any + 'static)>::downcast_mut::<Option<U>>(&mut Some(ty))?.take()
[INFO] [stdout] 25 +     <dyn Any + 'static >::downcast_mut::<Option<U>>(&mut Some(ty))?.take()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/api.rs:51:6
[INFO] [stdout]    |
[INFO] [stdout] 51 |     <(dyn Any + 'static)>::downcast_ref::<U>(ty)
[INFO] [stdout]    |      ^                 ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 51 -     <(dyn Any + 'static)>::downcast_ref::<U>(ty)
[INFO] [stdout] 51 +     <dyn Any + 'static >::downcast_ref::<U>(ty)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/api.rs:77:6
[INFO] [stdout]    |
[INFO] [stdout] 77 |     <(dyn Any + 'static)>::downcast_mut::<U>(ty)
[INFO] [stdout]    |      ^                 ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 77 -     <(dyn Any + 'static)>::downcast_mut::<U>(ty)
[INFO] [stdout] 77 +     <dyn Any + 'static >::downcast_mut::<U>(ty)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "e60f12b321ec3e773d4605fc995725a25fd9aa317bbe836f49b6834521d17d85", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "e60f12b321ec3e773d4605fc995725a25fd9aa317bbe836f49b6834521d17d85", kill_on_drop: false }`
[INFO] [stdout] e60f12b321ec3e773d4605fc995725a25fd9aa317bbe836f49b6834521d17d85
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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" "-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:e90291280db7d1fac5b66fc6dad9f9662629e7365a55743daf9bdf73ebc4ea79" "/opt/rustwide/cargo-home/bin/cargo" "+4987e9d4227139400384ab59296ffee3b0fb1183" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 132662a70ded144b911d5528ac6b7de970092dd6e1fa84649fac31a3c26d7c3c
[INFO] running `Command { std: "docker" "start" "-a" "132662a70ded144b911d5528ac6b7de970092dd6e1fa84649fac31a3c26d7c3c", kill_on_drop: false }`
[INFO] [stderr]    Compiling pasts v0.14.3
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/api.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 25 |     <(dyn Any + 'static)>::downcast_mut::<Option<U>>(&mut Some(ty))?.take()
[INFO] [stdout]    |      ^                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 25 -     <(dyn Any + 'static)>::downcast_mut::<Option<U>>(&mut Some(ty))?.take()
[INFO] [stdout] 25 +     <dyn Any + 'static >::downcast_mut::<Option<U>>(&mut Some(ty))?.take()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/api.rs:51:6
[INFO] [stdout]    |
[INFO] [stdout] 51 |     <(dyn Any + 'static)>::downcast_ref::<U>(ty)
[INFO] [stdout]    |      ^                 ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 51 -     <(dyn Any + 'static)>::downcast_ref::<U>(ty)
[INFO] [stdout] 51 +     <dyn Any + 'static >::downcast_ref::<U>(ty)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/api.rs:77:6
[INFO] [stdout]    |
[INFO] [stdout] 77 |     <(dyn Any + 'static)>::downcast_mut::<U>(ty)
[INFO] [stdout]    |      ^                 ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 77 -     <(dyn Any + 'static)>::downcast_mut::<U>(ty)
[INFO] [stdout] 77 +     <dyn Any + 'static >::downcast_mut::<U>(ty)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]    Compiling specializer v1.0.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/api.rs:25:6
[INFO] [stdout]    |
[INFO] [stdout] 25 |     <(dyn Any + 'static)>::downcast_mut::<Option<U>>(&mut Some(ty))?.take()
[INFO] [stdout]    |      ^                 ^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_parens)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 25 -     <(dyn Any + 'static)>::downcast_mut::<Option<U>>(&mut Some(ty))?.take()
[INFO] [stdout] 25 +     <dyn Any + 'static >::downcast_mut::<Option<U>>(&mut Some(ty))?.take()
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/api.rs:51:6
[INFO] [stdout]    |
[INFO] [stdout] 51 |     <(dyn Any + 'static)>::downcast_ref::<U>(ty)
[INFO] [stdout]    |      ^                 ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 51 -     <(dyn Any + 'static)>::downcast_ref::<U>(ty)
[INFO] [stdout] 51 +     <dyn Any + 'static >::downcast_ref::<U>(ty)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unnecessary parentheses around type
[INFO] [stdout]   --> src/api.rs:77:6
[INFO] [stdout]    |
[INFO] [stdout] 77 |     <(dyn Any + 'static)>::downcast_mut::<U>(ty)
[INFO] [stdout]    |      ^                 ^
[INFO] [stdout]    |
[INFO] [stdout] help: remove these parentheses
[INFO] [stdout]    |
[INFO] [stdout] 77 -     <(dyn Any + 'static)>::downcast_mut::<U>(ty)
[INFO] [stdout] 77 +     <dyn Any + 'static >::downcast_mut::<U>(ty)
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `test` profile [unoptimized + debuginfo] target(s) in 1.24s
[INFO] running `Command { std: "docker" "inspect" "132662a70ded144b911d5528ac6b7de970092dd6e1fa84649fac31a3c26d7c3c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "132662a70ded144b911d5528ac6b7de970092dd6e1fa84649fac31a3c26d7c3c", kill_on_drop: false }`
[INFO] [stdout] 132662a70ded144b911d5528ac6b7de970092dd6e1fa84649fac31a3c26d7c3c