[INFO] fetching crate serser 0.1.0...
[INFO] checking serser-0.1.0 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate serser 0.1.0 into /workspace/builds/worker-2-tc2/source
[INFO] started tweaking crates.io crate serser 0.1.0
[INFO] finished tweaking crates.io crate serser 0.1.0
[INFO] tweaked toml for crates.io crate serser 0.1.0 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate serser 0.1.0 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] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 7 packages to highest compatible versions
[INFO] [stderr]       Adding base64 v0.22.1 (available: v0.23.1)
[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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] bca36ed6ac53654433e654a6252c5e0868c94f6e987ad2ef8fb7ef5e6841b468
[INFO] running `Command { std: "docker" "start" "bca36ed6ac53654433e654a6252c5e0868c94f6e987ad2ef8fb7ef5e6841b468", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bca36ed6ac53654433e654a6252c5e0868c94f6e987ad2ef8fb7ef5e6841b468", 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" "bca36ed6ac53654433e654a6252c5e0868c94f6e987ad2ef8fb7ef5e6841b468" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bca36ed6ac53654433e654a6252c5e0868c94f6e987ad2ef8fb7ef5e6841b468", 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" "bca36ed6ac53654433e654a6252c5e0868c94f6e987ad2ef8fb7ef5e6841b468" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]     Checking maybe-owned v0.3.4
[INFO] [stderr]    Compiling syn v2.0.119
[INFO] [stderr]    Compiling serser_derive v0.1.0
[INFO] [stderr]     Checking serser v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] error: useless conversion to the same type: `token::Token<'_>`
[INFO] [stdout]    --> src/json/from.rs:199:29
[INFO] [stdout]     |
[INFO] [stdout] 199 | ...                   token.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] 199 -                             token.into(),
[INFO] [stdout] 199 +                             token,
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 199 -                             token.into(),
[INFO] [stdout] 199 +                             <token::Token<'_> as Into<_>>::into(token),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `token::Token<'_>`
[INFO] [stdout]    --> src/json/from.rs:208:29
[INFO] [stdout]     |
[INFO] [stdout] 208 | ...                   token.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] 208 -                             token.into(),
[INFO] [stdout] 208 +                             token,
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 208 -                             token.into(),
[INFO] [stdout] 208 +                             <token::Token<'_> as Into<_>>::into(token),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `token::Token<'_>`
[INFO] [stdout]    --> src/json/from.rs:217:29
[INFO] [stdout]     |
[INFO] [stdout] 217 | ...                   token.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] 217 -                             token.into(),
[INFO] [stdout] 217 +                             token,
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 217 -                             token.into(),
[INFO] [stdout] 217 +                             <token::Token<'_> as Into<_>>::into(token),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serser` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: useless conversion to the same type: `token::Token<'_>`
[INFO] [stdout]    --> src/json/from.rs:199:29
[INFO] [stdout]     |
[INFO] [stdout] 199 | ...                   token.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] 199 -                             token.into(),
[INFO] [stdout] 199 +                             token,
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 199 -                             token.into(),
[INFO] [stdout] 199 +                             <token::Token<'_> as Into<_>>::into(token),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `token::Token<'_>`
[INFO] [stdout]    --> src/json/from.rs:208:29
[INFO] [stdout]     |
[INFO] [stdout] 208 | ...                   token.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] 208 -                             token.into(),
[INFO] [stdout] 208 +                             token,
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 208 -                             token.into(),
[INFO] [stdout] 208 +                             <token::Token<'_> as Into<_>>::into(token),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: useless conversion to the same type: `token::Token<'_>`
[INFO] [stdout]    --> src/json/from.rs:217:29
[INFO] [stdout]     |
[INFO] [stdout] 217 | ...                   token.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] 217 -                             token.into(),
[INFO] [stdout] 217 +                             token,
[INFO] [stdout]     |
[INFO] [stdout] help: you can use the fully-qualified path to avoid triggering this lint
[INFO] [stdout]     |
[INFO] [stdout] 217 -                             token.into(),
[INFO] [stdout] 217 +                             <token::Token<'_> as Into<_>>::into(token),
[INFO] [stdout]     |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `serser` (lib test) due to 3 previous errors
[INFO] [stderr] warning: unused dependency `maybe-owned`
[INFO] [stderr]  --> Cargo.toml:4:15
[INFO] [stderr]   |
[INFO] [stderr] 4 | [dependencies.maybe-owned]
[INFO] [stderr]   |               ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `cargo::unused_dependencies` is set to `warn` by default
[INFO] [stderr] help: consider removing the dependency on `maybe-owned`
[INFO] [stderr] warning: `serser` (manifest) generated 1 warning
[INFO] running `Command { std: "docker" "inspect" "bca36ed6ac53654433e654a6252c5e0868c94f6e987ad2ef8fb7ef5e6841b468", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bca36ed6ac53654433e654a6252c5e0868c94f6e987ad2ef8fb7ef5e6841b468", kill_on_drop: false }`
[INFO] [stdout] bca36ed6ac53654433e654a6252c5e0868c94f6e987ad2ef8fb7ef5e6841b468
