[INFO] crate protoc-rust-copra 0.1.1 is already in cache
[INFO] extracting crate protoc-rust-copra 0.1.1 into work/ex/clippy-test-run/sources/stable/reg/protoc-rust-copra/0.1.1
[INFO] extracting crate protoc-rust-copra 0.1.1 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/protoc-rust-copra/0.1.1
[INFO] validating manifest of protoc-rust-copra-0.1.1 on toolchain stable
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of protoc-rust-copra-0.1.1 on toolchain stable+rustflags=-Dclippy::into_iter_on_array
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing protoc-rust-copra-0.1.1
[INFO] finished frobbing protoc-rust-copra-0.1.1
[INFO] frobbed toml for protoc-rust-copra-0.1.1 written to work/ex/clippy-test-run/sources/stable/reg/protoc-rust-copra/0.1.1/Cargo.toml
[INFO] started frobbing protoc-rust-copra-0.1.1
[INFO] finished frobbing protoc-rust-copra-0.1.1
[INFO] frobbed toml for protoc-rust-copra-0.1.1 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/protoc-rust-copra/0.1.1/Cargo.toml
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "generate-lockfile" "--manifest-path" "Cargo.toml" "-Zno-index-update"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+stable" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] linting protoc-rust-copra-0.1.1 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-7/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/protoc-rust-copra/0.1.1:/opt/crater/workdir:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/opt/crater/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/opt/crater/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/opt/crater/workdir" "-e" "MAP_USER_ID=1000" "-e" "CARGO_TARGET_DIR=/opt/crater/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/opt/crater/cargo-home" "-e" "RUSTUP_HOME=/opt/crater/rustup-home" "-w" "/opt/crater/workdir" "-m" "1536M" "--network" "none" "rustops/crates-build-env" "/opt/crater/cargo-home/bin/cargo" "+stable" "clippy" "--frozen" "--all" "--all-targets"`
[INFO] [stdout] c151bdfcf85f79196d35f89316337467bd891d1e0f644abad4ad4c32d53780a4
[INFO] running `"docker" "start" "-a" "c151bdfcf85f79196d35f89316337467bd891d1e0f644abad4ad4c32d53780a4"`
[INFO] [stderr]    Compiling protobuf v1.7.4
[INFO] [stderr]     Checking protoc v1.7.4
[INFO] [stderr]     Checking Inflector v0.11.4
[INFO] [stderr]     Checking protoc-rust v1.7.4
[INFO] [stderr]     Checking protoc-rust-copra v0.1.1 (/opt/crater/workdir)
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:174:9
[INFO] [stderr]     |
[INFO] [stderr] 174 |         return Some(&path[prefix.len() + 1..]);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Some(&path[prefix.len() + 1..])`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:176:9
[INFO] [stderr]     |
[INFO] [stderr] 176 |         return None;
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:174:9
[INFO] [stderr]     |
[INFO] [stderr] 174 |         return Some(&path[prefix.len() + 1..]);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Some(&path[prefix.len() + 1..])`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::needless_return)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/lib.rs:176:9
[INFO] [stderr]     |
[INFO] [stderr] 176 |         return None;
[INFO] [stderr]     |         ^^^^^^^^^^^^ help: remove `return` as shown: `None`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/codegen/provider.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     gen = gen + "}";
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ help: replace it with: `gen += "}"`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/codegen/provider.rs:147:12
[INFO] [stderr]     |
[INFO] [stderr] 147 |           + &format!(
[INFO] [stderr]     |  ____________^
[INFO] [stderr] 148 | |             r"
[INFO] [stderr] 149 | |         entries
[INFO] [stderr] 150 | |     }}
[INFO] [stderr] 151 | | }}
[INFO] [stderr] 152 | | "
[INFO] [stderr] 153 | |         );
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] help: consider using .to_string()
[INFO] [stderr]     |
[INFO] [stderr] 147 |         + &r"
[INFO] [stderr] 148 |         entries
[INFO] [stderr] 149 |     }}
[INFO] [stderr] 150 | }}
[INFO] [stderr] 151 | ".to_string();
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/codegen/stub.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 | /     gen = gen
[INFO] [stderr] 66 | |         + r"        }
[INFO] [stderr] 67 | |     }
[INFO] [stderr] 68 | | ";
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] help: replace it with
[INFO] [stderr]    |
[INFO] [stderr] 65 |     gen += r"        }
[INFO] [stderr] 66 |     }
[INFO] [stderr] 67 | ";
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/codegen/stub.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     gen = gen + "}\n";
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^ help: replace it with: `gen += "}\n"`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/codegen/provider.rs:48:5
[INFO] [stderr]    |
[INFO] [stderr] 48 |     gen = gen + "}";
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^ help: replace it with: `gen += "}"`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::assign_op_pattern)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/lib.rs:161:25
[INFO] [stderr]     |
[INFO] [stderr] 161 |     if prefix.ends_with("/") || prefix.ends_with("\\") {
[INFO] [stderr]     |                         ^^^ help: try using a char instead: `'/'`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/lib.rs:161:50
[INFO] [stderr]     |
[INFO] [stderr] 161 |     if prefix.ends_with("/") || prefix.ends_with("\\") {
[INFO] [stderr]     |                                                  ^^^^ help: try using a char instead: `'\\'`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: useless use of `format!`
[INFO] [stderr]    --> src/codegen/provider.rs:147:12
[INFO] [stderr]     |
[INFO] [stderr] 147 |           + &format!(
[INFO] [stderr]     |  ____________^
[INFO] [stderr] 148 | |             r"
[INFO] [stderr] 149 | |         entries
[INFO] [stderr] 150 | |     }}
[INFO] [stderr] 151 | | }}
[INFO] [stderr] 152 | | "
[INFO] [stderr] 153 | |         );
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::useless_format)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#useless_format
[INFO] [stderr] help: consider using .to_string()
[INFO] [stderr]     |
[INFO] [stderr] 147 |         + &r"
[INFO] [stderr] 148 |         entries
[INFO] [stderr] 149 |     }}
[INFO] [stderr] 150 | }}
[INFO] [stderr] 151 | ".to_string();
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/codegen/stub.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 | /     gen = gen
[INFO] [stderr] 66 | |         + r"        }
[INFO] [stderr] 67 | |     }
[INFO] [stderr] 68 | | ";
[INFO] [stderr]    | |_^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] help: replace it with
[INFO] [stderr]    |
[INFO] [stderr] 65 |     gen += r"        }
[INFO] [stderr] 66 |     }
[INFO] [stderr] 67 | ";
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/codegen/stub.rs:96:5
[INFO] [stderr]    |
[INFO] [stderr] 96 |     gen = gen + "}\n";
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^ help: replace it with: `gen += "}\n"`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#assign_op_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/lib.rs:161:25
[INFO] [stderr]     |
[INFO] [stderr] 161 |     if prefix.ends_with("/") || prefix.ends_with("\\") {
[INFO] [stderr]     |                         ^^^ help: try using a char instead: `'/'`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::single_char_pattern)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr] warning: single-character string constant used as pattern
[INFO] [stderr]    --> src/lib.rs:161:50
[INFO] [stderr]     |
[INFO] [stderr] 161 |     if prefix.ends_with("/") || prefix.ends_with("\\") {
[INFO] [stderr]     |                                                  ^^^^ help: try using a char instead: `'\\'`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_char_pattern
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 13.02s
[INFO] running `"docker" "inspect" "c151bdfcf85f79196d35f89316337467bd891d1e0f644abad4ad4c32d53780a4"`
[INFO] running `"docker" "rm" "-f" "c151bdfcf85f79196d35f89316337467bd891d1e0f644abad4ad4c32d53780a4"`
[INFO] [stdout] c151bdfcf85f79196d35f89316337467bd891d1e0f644abad4ad4c32d53780a4