[INFO] crate undulate 0.1.0 is already in cache
[INFO] extracting crate undulate 0.1.0 into work/ex/clippy-test-run/sources/stable/reg/undulate/0.1.0
[INFO] extracting crate undulate 0.1.0 into work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/undulate/0.1.0
[INFO] validating manifest of undulate-0.1.0 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 undulate-0.1.0 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 undulate-0.1.0
[INFO] finished frobbing undulate-0.1.0
[INFO] frobbed toml for undulate-0.1.0 written to work/ex/clippy-test-run/sources/stable/reg/undulate/0.1.0/Cargo.toml
[INFO] started frobbing undulate-0.1.0
[INFO] finished frobbing undulate-0.1.0
[INFO] frobbed toml for undulate-0.1.0 written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/reg/undulate/0.1.0/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 undulate-0.1.0 against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-0/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/reg/undulate/0.1.0:/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] af4e9040bbfd129ca159d901ff3611acaee91df1bc9e80ae2aff930e7f15bce6
[INFO] running `"docker" "start" "-a" "af4e9040bbfd129ca159d901ff3611acaee91df1bc9e80ae2aff930e7f15bce6"`
[INFO] [stderr]     Checking undulate v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused imports: `Read`, `self`
[INFO] [stderr]   --> src/lib.rs:12:15
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::io::{self, Read, Write};
[INFO] [stderr]    |               ^^^^  ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `Read`, `self`
[INFO] [stderr]   --> src/lib.rs:12:15
[INFO] [stderr]    |
[INFO] [stderr] 12 | use std::io::{self, Read, Write};
[INFO] [stderr]    |               ^^^^  ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `specifier`
[INFO] [stderr]   --> src/lib.rs:96:30
[INFO] [stderr]    |
[INFO] [stderr] 96 | pub fn remove<T: AsRef<str>>(specifier: T) -> Result<(), RemoveError> {
[INFO] [stderr]    |                              ^^^^^^^^^ help: consider using `_specifier` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `url`
[INFO] [stderr]    --> src/lib.rs:100:16
[INFO] [stderr]     |
[INFO] [stderr] 100 | pub fn install(url: &str) -> Result<(), InstallError> {
[INFO] [stderr]     |                ^^^ help: consider using `_url` instead
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/lib.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 | /     match fs::metadata(&package_path) {
[INFO] [stderr] 66 | |         Ok(_) => return Err(InitError::AlreadyExists),
[INFO] [stderr] 67 | |         Err(_) => {},
[INFO] [stderr] 68 | |     }
[INFO] [stderr]    | |_____^ help: try this: `if let Ok(_) = fs::metadata(&package_path) { return Err(InitError::AlreadyExists) }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/lib.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     file.write(serialized.as_bytes()).unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::unused_io_amount)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `undulate`.
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stderr] warning: unused variable: `specifier`
[INFO] [stderr]   --> src/lib.rs:96:30
[INFO] [stderr]    |
[INFO] [stderr] 96 | pub fn remove<T: AsRef<str>>(specifier: T) -> Result<(), RemoveError> {
[INFO] [stderr]    |                              ^^^^^^^^^ help: consider using `_specifier` instead
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(unused_variables)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `url`
[INFO] [stderr]    --> src/lib.rs:100:16
[INFO] [stderr]     |
[INFO] [stderr] 100 | pub fn install(url: &str) -> Result<(), InstallError> {
[INFO] [stderr]     |                ^^^ help: consider using `_url` instead
[INFO] [stderr] 
[INFO] [stderr] warning: you seem to be trying to use match for destructuring a single pattern. Consider using `if let`
[INFO] [stderr]   --> src/lib.rs:65:5
[INFO] [stderr]    |
[INFO] [stderr] 65 | /     match fs::metadata(&package_path) {
[INFO] [stderr] 66 | |         Ok(_) => return Err(InitError::AlreadyExists),
[INFO] [stderr] 67 | |         Err(_) => {},
[INFO] [stderr] 68 | |     }
[INFO] [stderr]    | |_____^ help: try this: `if let Ok(_) = fs::metadata(&package_path) { return Err(InitError::AlreadyExists) }`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::single_match)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#single_match
[INFO] [stderr] 
[INFO] [stderr] error: handle written amount returned or use `Write::write_all` instead
[INFO] [stderr]   --> src/lib.rs:78:5
[INFO] [stderr]    |
[INFO] [stderr] 78 |     file.write(serialized.as_bytes()).unwrap();
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[deny(clippy::unused_io_amount)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_io_amount
[INFO] [stderr] 
[INFO] [stderr] error: aborting due to previous error
[INFO] [stderr] 
[INFO] [stderr] error: Could not compile `undulate`.
[INFO] [stderr] 
[INFO] [stderr] To learn more, run the command again with --verbose.
[INFO] running `"docker" "inspect" "af4e9040bbfd129ca159d901ff3611acaee91df1bc9e80ae2aff930e7f15bce6"`
[INFO] running `"docker" "rm" "-f" "af4e9040bbfd129ca159d901ff3611acaee91df1bc9e80ae2aff930e7f15bce6"`
[INFO] [stdout] af4e9040bbfd129ca159d901ff3611acaee91df1bc9e80ae2aff930e7f15bce6