[INFO] updating cached repository PurpleMyst/schemers
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/PurpleMyst/schemers
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/PurpleMyst/schemers" "work/ex/clippy-test-run/sources/stable/gh/PurpleMyst/schemers"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/PurpleMyst/schemers'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/PurpleMyst/schemers" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/PurpleMyst/schemers"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/PurpleMyst/schemers'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] d80e03fcbe9895ddc97647192929d838823242ac
[INFO] sha for GitHub repo PurpleMyst/schemers: d80e03fcbe9895ddc97647192929d838823242ac
[INFO] validating manifest of PurpleMyst/schemers 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 PurpleMyst/schemers 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 PurpleMyst/schemers
[INFO] finished frobbing PurpleMyst/schemers
[INFO] frobbed toml for PurpleMyst/schemers written to work/ex/clippy-test-run/sources/stable/gh/PurpleMyst/schemers/Cargo.toml
[INFO] started frobbing PurpleMyst/schemers
[INFO] finished frobbing PurpleMyst/schemers
[INFO] frobbed toml for PurpleMyst/schemers written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/PurpleMyst/schemers/Cargo.toml
[INFO] crate PurpleMyst/schemers has a lockfile. skipping
[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 PurpleMyst/schemers against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-5/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/PurpleMyst/schemers:/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] 22200dfc75a30f7f12e8d7a6b3311af83eb2991c5ea5b88e41e423c19f984d0e
[INFO] running `"docker" "start" "-a" "22200dfc75a30f7f12e8d7a6b3311af83eb2991c5ea5b88e41e423c19f984d0e"`
[INFO] [stderr]     Checking nom v4.0.0
[INFO] [stderr]    Compiling gc_derive v0.3.2
[INFO] [stderr]     Checking schemers v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variant is never constructed: `True`
[INFO] [stderr]   --> src/value.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     True,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/parser.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 |     if contents.len() == 0 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `contents.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[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/parser.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 | /         match &s as &str {
[INFO] [stderr] 42 | |             "if" => return Value::If(rest.skip(1).collect()),
[INFO] [stderr] 43 | |             _ => {}
[INFO] [stderr] 44 | |         }
[INFO] [stderr]    | |_________^ help: try this: `if let "if" = &s as &str { return Value::If(rest.skip(1).collect()) }`
[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] warning: needlessly taken reference of both operands
[INFO] [stderr]   --> src/scope.rs:68:30
[INFO] [stderr]    |
[INFO] [stderr] 68 |                 self.eval(if &*condition.borrow() != &Value::False {
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] help: use the values directly
[INFO] [stderr]    |
[INFO] [stderr] 68 |                 self.eval(if *condition.borrow() != Value::False {
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `True`
[INFO] [stderr]   --> src/value.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     True,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(dead_code)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: length comparison to zero
[INFO] [stderr]   --> src/parser.rs:32:8
[INFO] [stderr]    |
[INFO] [stderr] 32 |     if contents.len() == 0 {
[INFO] [stderr]    |        ^^^^^^^^^^^^^^^^^^^ help: using `is_empty` is clearer and more explicit: `contents.is_empty()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::len_zero)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#len_zero
[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/parser.rs:41:9
[INFO] [stderr]    |
[INFO] [stderr] 41 | /         match &s as &str {
[INFO] [stderr] 42 | |             "if" => return Value::If(rest.skip(1).collect()),
[INFO] [stderr] 43 | |             _ => {}
[INFO] [stderr] 44 | |         }
[INFO] [stderr]    | |_________^ help: try this: `if let "if" = &s as &str { return Value::If(rest.skip(1).collect()) }`
[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] warning: needlessly taken reference of both operands
[INFO] [stderr]   --> src/scope.rs:68:30
[INFO] [stderr]    |
[INFO] [stderr] 68 |                 self.eval(if &*condition.borrow() != &Value::False {
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::op_ref)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#op_ref
[INFO] [stderr] help: use the values directly
[INFO] [stderr]    |
[INFO] [stderr] 68 |                 self.eval(if *condition.borrow() != Value::False {
[INFO] [stderr]    |                              ^^^^^^^^^^^^^^^^^^^    ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.56s
[INFO] running `"docker" "inspect" "22200dfc75a30f7f12e8d7a6b3311af83eb2991c5ea5b88e41e423c19f984d0e"`
[INFO] running `"docker" "rm" "-f" "22200dfc75a30f7f12e8d7a6b3311af83eb2991c5ea5b88e41e423c19f984d0e"`
[INFO] [stdout] 22200dfc75a30f7f12e8d7a6b3311af83eb2991c5ea5b88e41e423c19f984d0e