[INFO] fetching crate cargo-piston 0.5.2...
[INFO] checking cargo-piston-0.5.2 against a5689b034ad287112f709693384a37f1377eb9cc for pr-129249-3
[INFO] extracting crate cargo-piston 0.5.2 into /workspace/builds/worker-5-tc2/source
[INFO] started tweaking crates.io crate cargo-piston 0.5.2
[INFO] finished tweaking crates.io crate cargo-piston 0.5.2
[INFO] tweaked toml for crates.io crate cargo-piston 0.5.2 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] validating manifest of crates.io crate cargo-piston 0.5.2 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 cargo-piston 0.5.2 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] 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] a14c71b261c26662d077371519f2bb673e2234ded48edcdf6341b58b9fb3c16e
[INFO] running `Command { std: "docker" "start" "a14c71b261c26662d077371519f2bb673e2234ded48edcdf6341b58b9fb3c16e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a14c71b261c26662d077371519f2bb673e2234ded48edcdf6341b58b9fb3c16e", 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" "a14c71b261c26662d077371519f2bb673e2234ded48edcdf6341b58b9fb3c16e" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a14c71b261c26662d077371519f2bb673e2234ded48edcdf6341b58b9fb3c16e", 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" "a14c71b261c26662d077371519f2bb673e2234ded48edcdf6341b58b9fb3c16e" "/opt/rustwide/cargo-home/bin/cargo" "+a5689b034ad287112f709693384a37f1377eb9cc" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stderr]    Compiling quote v1.0.42
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[INFO] [stderr]     Checking rand_chacha v0.3.1
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[INFO] [stderr]     Checking cargo-piston v0.5.2 (/opt/rustwide/workdir)
[INFO] [stdout] error: useless conversion to the same type: `std::string::String`
[INFO] [stdout]    --> src/linux.rs:340:20
[INFO] [stdout]     |
[INFO] [stdout] 340 |             return format!("GPG signing failed: {}", err_msg).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] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cargo-piston` (bin "cargo-piston") 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: `std::string::String`
[INFO] [stdout]    --> src/linux.rs:340:20
[INFO] [stdout]     |
[INFO] [stdout] 340 |             return format!("GPG signing failed: {}", err_msg).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] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `cargo-piston` (bin "cargo-piston" test) due to 1 previous error
[INFO] running `Command { std: "docker" "inspect" "a14c71b261c26662d077371519f2bb673e2234ded48edcdf6341b58b9fb3c16e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a14c71b261c26662d077371519f2bb673e2234ded48edcdf6341b58b9fb3c16e", kill_on_drop: false }`
[INFO] [stdout] a14c71b261c26662d077371519f2bb673e2234ded48edcdf6341b58b9fb3c16e
