[INFO] fetching crate polariton 0.6.0...
[INFO] checking polariton-0.6.0 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate polariton 0.6.0 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate polariton 0.6.0
[INFO] finished tweaking crates.io crate polariton 0.6.0
[INFO] tweaked toml for crates.io crate polariton 0.6.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate polariton 0.6.0 on toolchain a5689b034ad287112f709693384a37f1377eb9cc
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate crates.io crate polariton 0.6.0 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" "+a5689b034ad287112f709693384a37f1377eb9cc" "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-5-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,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" "-m" "1610612736" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:77db811e55d90add9212f6832c23229e3de5f1c1f9905e8cb07319ea15df73ac" "sleep" "infinity", kill_on_drop: false }`
[INFO] [stdout] 4fcb59048fad8bfed3e77bba037d112aa42b2da5c6b91fa0006ee5d5938e7a11
[INFO] running `Command { std: "docker" "start" "4fcb59048fad8bfed3e77bba037d112aa42b2da5c6b91fa0006ee5d5938e7a11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4fcb59048fad8bfed3e77bba037d112aa42b2da5c6b91fa0006ee5d5938e7a11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4fcb59048fad8bfed3e77bba037d112aa42b2da5c6b91fa0006ee5d5938e7a11" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "4fcb59048fad8bfed3e77bba037d112aa42b2da5c6b91fa0006ee5d5938e7a11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "exec" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-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" "-w" "/opt/rustwide/workdir" "--user" "0:0" "4fcb59048fad8bfed3e77bba037d112aa42b2da5c6b91fa0006ee5d5938e7a11" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking polariton v0.6.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: useless conversion to the same type: `Vec<(Typed<C>, Typed<C>)>`
[INFO] [stdout]    --> src/operation/type_prefixed.rs:121:20
[INFO] [stdout]     |
[INFO] [stdout] 121 |             items: items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>().into(),
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 121 -             items: items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>().into(),
[INFO] [stdout] 121 +             items: items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>(),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 121 -             items: items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>().into(),
[INFO] [stdout] 121 +             items: <Vec<(Typed<C>, Typed<C>)> as Into<_>>::into(items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `Vec<(Typed<C>, Typed<C>)>`
[INFO] [stdout]    --> src/operation/type_prefixed.rs:129:20
[INFO] [stdout]     |
[INFO] [stdout] 129 |             items: items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>().into(),
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 129 -             items: items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>().into(),
[INFO] [stdout] 129 +             items: items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>(),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 129 -             items: items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>().into(),
[INFO] [stdout] 129 +             items: <Vec<(Typed<C>, Typed<C>)> as Into<_>>::into(items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `polariton` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: useless conversion to the same type: `Vec<(type_prefixed::Typed<C>, type_prefixed::Typed<C>)>`
[INFO] [stdout]    --> src/operation/type_prefixed.rs:121:20
[INFO] [stdout]     |
[INFO] [stdout] 121 |             items: items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>().into(),
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout]     = note: `#[deny(self_type_conversion)]` on by default
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 121 -             items: items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>().into(),
[INFO] [stdout] 121 +             items: items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>(),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 121 -             items: items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>().into(),
[INFO] [stdout] 121 +             items: <Vec<(type_prefixed::Typed<C>, type_prefixed::Typed<C>)> as Into<_>>::into(items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `Vec<(type_prefixed::Typed<C>, type_prefixed::Typed<C>)>`
[INFO] [stdout]    --> src/operation/type_prefixed.rs:129:20
[INFO] [stdout]     |
[INFO] [stdout] 129 |             items: items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>().into(),
[INFO] [stdout]     |                    ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this method call relies on the `impl<T> Into<T> for T` blanket implementation and type inference, which is a semver hazard as a new `impl Into<_>` that affects your type might be added in the future causing type inference errors
[INFO] [stdout] help: consider removing the conversion call
[INFO] [stdout]     |
[INFO] [stdout] 129 -             items: items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>().into(),
[INFO] [stdout] 129 +             items: items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>(),
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 129 -             items: items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>().into(),
[INFO] [stdout] 129 +             items: <Vec<(type_prefixed::Typed<C>, type_prefixed::Typed<C>)> as Into<_>>::into(items.into_iter().map(|(key, val)| (key.into(), val.into())).collect::<Vec<_>>()),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `polariton` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "4fcb59048fad8bfed3e77bba037d112aa42b2da5c6b91fa0006ee5d5938e7a11", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4fcb59048fad8bfed3e77bba037d112aa42b2da5c6b91fa0006ee5d5938e7a11", kill_on_drop: false }`
[INFO] [stdout] 4fcb59048fad8bfed3e77bba037d112aa42b2da5c6b91fa0006ee5d5938e7a11
