[INFO] fetching crate decent-synquote-alternative 0.4.0...
[INFO] checking decent-synquote-alternative-0.4.0 against c60b92c03ca8a3b101eb9d57f51e2232690638c7 for pr-164148-crater-rollup
[INFO] extracting crate decent-synquote-alternative 0.4.0 into /workspace/builds/worker-7-tc2/source
[INFO] started tweaking crates.io crate decent-synquote-alternative 0.4.0
[INFO] finished tweaking crates.io crate decent-synquote-alternative 0.4.0
[INFO] tweaked toml for crates.io crate decent-synquote-alternative 0.4.0 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate decent-synquote-alternative 0.4.0 on toolchain c60b92c03ca8a3b101eb9d57f51e2232690638c7
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 2 packages to highest compatible versions
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 3ccd10c3151035af92e14223870cd2ebec6ea01eddcd3b8df6578a7a493f7a97
[INFO] running `Command { std: "docker" "start" "3ccd10c3151035af92e14223870cd2ebec6ea01eddcd3b8df6578a7a493f7a97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ccd10c3151035af92e14223870cd2ebec6ea01eddcd3b8df6578a7a493f7a97", 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" "3ccd10c3151035af92e14223870cd2ebec6ea01eddcd3b8df6578a7a493f7a97" "/opt/rustwide/cargo-home/bin/cargo" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "3ccd10c3151035af92e14223870cd2ebec6ea01eddcd3b8df6578a7a493f7a97", 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" "3ccd10c3151035af92e14223870cd2ebec6ea01eddcd3b8df6578a7a493f7a97" "/opt/rustwide/cargo-home/bin/cargo" "+c60b92c03ca8a3b101eb9d57f51e2232690638c7" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking decent-synquote-alternative v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: useless conversion to the same type: `Option<TokenTree>` decent_synquote_alternative
[INFO] [stdout]    --> src/parser.rs:952:47
[INFO] [stdout]     |
[INFO] [stdout] 952 |                   let expr: Option<TokenTree> = self
[INFO] [stdout]     |  _______________________________________________^
[INFO] [stdout] 953 | |                     .eat_literal()
[INFO] [stdout] 954 | |                     .map(TokenTree::Literal)
[INFO] [stdout] 955 | |                     .or_else(|| self.eat_any_ident().map(TokenTree::Ident))
[INFO] [stdout] 956 | |                     .or_else(|| self.eat_group(Delimiter::Brace))
[INFO] [stdout] 957 | |                     .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] 956 -                     .or_else(|| self.eat_group(Delimiter::Brace))
[INFO] [stdout] 957 -                     .into();
[INFO] [stdout] 956 +                     .or_else(|| self.eat_group(Delimiter::Brace));
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 952 ~                 let expr: Option<TokenTree> = <Option<TokenTree> as Into<_>>::into(self
[INFO] [stdout] 953 |                     .eat_literal()
[INFO] [stdout] 954 |                     .map(TokenTree::Literal)
[INFO] [stdout] 955 |                     .or_else(|| self.eat_any_ident().map(TokenTree::Ident))
[INFO] [stdout] 956 ~                     .or_else(|| self.eat_group(Delimiter::Brace)));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `decent-synquote-alternative` (lib) due to 1 previous error
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: useless conversion to the same type: `Option<TokenTree>` decent_synquote_alternative
[INFO] [stdout]    --> src/parser.rs:952:47
[INFO] [stdout]     |
[INFO] [stdout] 952 |                   let expr: Option<TokenTree> = self
[INFO] [stdout]     |  _______________________________________________^
[INFO] [stdout] 953 | |                     .eat_literal()
[INFO] [stdout] 954 | |                     .map(TokenTree::Literal)
[INFO] [stdout] 955 | |                     .or_else(|| self.eat_any_ident().map(TokenTree::Ident))
[INFO] [stdout] 956 | |                     .or_else(|| self.eat_group(Delimiter::Brace))
[INFO] [stdout] 957 | |                     .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] 956 -                     .or_else(|| self.eat_group(Delimiter::Brace))
[INFO] [stdout] 957 -                     .into();
[INFO] [stdout] 956 +                     .or_else(|| self.eat_group(Delimiter::Brace));
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 952 ~                 let expr: Option<TokenTree> = <Option<TokenTree> as Into<_>>::into(self
[INFO] [stdout] 953 |                     .eat_literal()
[INFO] [stdout] 954 |                     .map(TokenTree::Literal)
[INFO] [stdout] 955 |                     .or_else(|| self.eat_any_ident().map(TokenTree::Ident))
[INFO] [stdout] 956 ~                     .or_else(|| self.eat_group(Delimiter::Brace)));
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `decent-synquote-alternative` (lib test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "3ccd10c3151035af92e14223870cd2ebec6ea01eddcd3b8df6578a7a493f7a97", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3ccd10c3151035af92e14223870cd2ebec6ea01eddcd3b8df6578a7a493f7a97", kill_on_drop: false }`
[INFO] [stdout] 3ccd10c3151035af92e14223870cd2ebec6ea01eddcd3b8df6578a7a493f7a97
