[INFO] updating cached repository chklauser/rust-nvm
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/chklauser/rust-nvm
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/chklauser/rust-nvm" "work/ex/clippy-test-run/sources/stable/gh/chklauser/rust-nvm"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable/gh/chklauser/rust-nvm'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/chklauser/rust-nvm" "work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/chklauser/rust-nvm"`
[INFO] [stderr] Cloning into 'work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/chklauser/rust-nvm'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] 50e64e580fc3ed48073e106e0a1dd586d52f4576
[INFO] sha for GitHub repo chklauser/rust-nvm: 50e64e580fc3ed48073e106e0a1dd586d52f4576
[INFO] validating manifest of chklauser/rust-nvm 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 chklauser/rust-nvm 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 chklauser/rust-nvm
[INFO] finished frobbing chklauser/rust-nvm
[INFO] frobbed toml for chklauser/rust-nvm written to work/ex/clippy-test-run/sources/stable/gh/chklauser/rust-nvm/Cargo.toml
[INFO] started frobbing chklauser/rust-nvm
[INFO] finished frobbing chklauser/rust-nvm
[INFO] frobbed toml for chklauser/rust-nvm written to work/ex/clippy-test-run/sources/stable+rustflags=-Dclippy%3A%3Ainto_iter_on_array/gh/chklauser/rust-nvm/Cargo.toml
[INFO] crate chklauser/rust-nvm 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 chklauser/rust-nvm against stable for clippy-test-run
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/clippy-test-run/worker-2/stable:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/clippy-test-run/sources/stable/gh/chklauser/rust-nvm:/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] dd1bba71c060f86279b99731fe8b16f97dd35a108178a01aaf06a4821b9e7597
[INFO] running `"docker" "start" "-a" "dd1bba71c060f86279b99731fe8b16f97dd35a108178a01aaf06a4821b9e7597"`
[INFO] [stderr]     Checking libc v0.2.14
[INFO] [stderr]     Checking regex-syntax v0.3.4
[INFO] [stderr]     Checking combine v2.0.0
[INFO] [stderr]     Checking thread-id v2.0.0
[INFO] [stderr]     Checking memchr v0.1.11
[INFO] [stderr]     Checking term_size v0.2.1
[INFO] [stderr]     Checking thread_local v0.2.6
[INFO] [stderr]     Checking clap v2.19.1
[INFO] [stderr]     Checking aho-corasick v0.5.2
[INFO] [stderr]     Checking regex v0.1.73
[INFO] [stderr]     Checking combine-language v2.0.0
[INFO] [stderr]     Checking env_logger v0.3.4
[INFO] [stderr]     Checking nvm v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/vm/bytecode.rs:55:13
[INFO] [stderr]    |
[INFO] [stderr] 55 |             num_parameters: num_parameters,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `num_parameters`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/vm/bytecode.rs:56:13
[INFO] [stderr]    |
[INFO] [stderr] 56 |             num_registers: num_registers,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `num_registers`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/vm/bytecode.rs:57:13
[INFO] [stderr]    |
[INFO] [stderr] 57 |             instructions: instructions,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `instructions`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/vm/bytecode.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |             name: name,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `name`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/vm/machine.rs:170:9
[INFO] [stderr]     |
[INFO] [stderr] 170 |         parameters: parameters,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `parameters`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/vm/machine.rs:173:9
[INFO] [stderr]     |
[INFO] [stderr] 173 |         routine: routine,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^ help: replace it with: `routine`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/frontend/codegen.rs:584:9
[INFO] [stderr]     |
[INFO] [stderr] 584 |         program_ctx: program_ctx,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `program_ctx`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/vm/bytecode.rs:55:13
[INFO] [stderr]    |
[INFO] [stderr] 55 |             num_parameters: num_parameters,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `num_parameters`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_field_names)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/vm/bytecode.rs:56:13
[INFO] [stderr]    |
[INFO] [stderr] 56 |             num_registers: num_registers,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `num_registers`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/vm/bytecode.rs:57:13
[INFO] [stderr]    |
[INFO] [stderr] 57 |             instructions: instructions,
[INFO] [stderr]    |             ^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `instructions`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]   --> src/vm/bytecode.rs:58:13
[INFO] [stderr]    |
[INFO] [stderr] 58 |             name: name,
[INFO] [stderr]    |             ^^^^^^^^^^ help: replace it with: `name`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/vm/machine.rs:170:9
[INFO] [stderr]     |
[INFO] [stderr] 170 |         parameters: parameters,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `parameters`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/vm/machine.rs:173:9
[INFO] [stderr]     |
[INFO] [stderr] 173 |         routine: routine,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^ help: replace it with: `routine`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: redundant field names in struct initialization
[INFO] [stderr]    --> src/frontend/codegen.rs:584:9
[INFO] [stderr]     |
[INFO] [stderr] 584 |         program_ctx: program_ctx,
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `program_ctx`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_field_names
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/vm/bytecode.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 | /         return Routine {
[INFO] [stderr] 55 | |             num_parameters: num_parameters,
[INFO] [stderr] 56 | |             num_registers: num_registers,
[INFO] [stderr] 57 | |             instructions: instructions,
[INFO] [stderr] 58 | |             name: name,
[INFO] [stderr] 59 | |         };
[INFO] [stderr]    | |__________^
[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] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 54 |         Routine {
[INFO] [stderr] 55 |             num_parameters: num_parameters,
[INFO] [stderr] 56 |             num_registers: num_registers,
[INFO] [stderr] 57 |             instructions: instructions,
[INFO] [stderr] 58 |             name: name,
[INFO] [stderr] 59 |         }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]    --> src/vm/machine.rs:109:1
[INFO] [stderr]     |
[INFO] [stderr] 109 | / macro_rules! try_check{
[INFO] [stderr] 110 | |   ($e:expr) => (e)
[INFO] [stderr] 111 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_macros)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/vm/machine.rs:312:5
[INFO] [stderr]     |
[INFO] [stderr] 312 |     return Ok(());
[INFO] [stderr]     |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[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/vm/machine.rs:188:9
[INFO] [stderr]     |
[INFO] [stderr] 188 |         return Ok(());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[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: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/frontend/parser.rs:177:13
[INFO] [stderr]     |
[INFO] [stderr] 177 |             r
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/frontend/parser.rs:176:21
[INFO] [stderr]     |
[INFO] [stderr] 176 |             let r = Decl::Routine(id, args, stmts);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/frontend/parser.rs:184:9
[INFO] [stderr]     |
[INFO] [stderr] 184 |         p
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/frontend/parser.rs:183:17
[INFO] [stderr]     |
[INFO] [stderr] 183 |         let p = Program(ds);
[INFO] [stderr]     |                 ^^^^^^^^^^^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/frontend/codegen.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |         return self.instructions.len() - 1;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.instructions.len() - 1`
[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/frontend/codegen.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |         return self.instructions.len();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.instructions.len()`
[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/frontend/codegen.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 | /         return self.register_map
[INFO] [stderr] 43 | |             .get(&name)
[INFO] [stderr] 44 | |             .map_or_else(// No register found, try parameter
[INFO] [stderr] 45 | |                          || self.parameter_map.get(&name).map(|v| Parameter(*v)),
[INFO] [stderr] 46 | |                          // Some register found
[INFO] [stderr] 47 | |                          |v| Some(Register(*v)))
[INFO] [stderr] 48 | |             .ok_or_else(|| UnresolvedSymbol(name.to_string()));
[INFO] [stderr]    | |_______________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 42 |         self.register_map
[INFO] [stderr] 43 |             .get(&name)
[INFO] [stderr] 44 |             .map_or_else(// No register found, try parameter
[INFO] [stderr] 45 |                          || self.parameter_map.get(&name).map(|v| Parameter(*v)),
[INFO] [stderr] 46 |                          // Some register found
[INFO] [stderr] 47 |                          |v| Some(Register(*v)))
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/frontend/codegen.rs:290:9
[INFO] [stderr]     |
[INFO] [stderr] 290 |         return Ok(());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[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/frontend/codegen.rs:424:5
[INFO] [stderr]     |
[INFO] [stderr] 424 |     return Ok(final_register_names);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(final_register_names)`
[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/frontend/codegen.rs:588:5
[INFO] [stderr]     |
[INFO] [stderr] 588 |     return Ok((ctx.vars, ctx.max_stack));
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok((ctx.vars, ctx.max_stack))`
[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 unit expression
[INFO] [stderr]    --> src/frontend/codegen.rs:447:17
[INFO] [stderr]     |
[INFO] [stderr] 447 |                 ()
[INFO] [stderr]     |                 ^^ help: remove the final `()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/frontend/codegen.rs:632:13
[INFO] [stderr]     |
[INFO] [stderr] 632 |             return map;
[INFO] [stderr]     |             ^^^^^^^^^^^ help: remove `return` as shown: `map`
[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/frontend/mod.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     return Ok(program);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(program)`
[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: unused `#[macro_use]` import
[INFO] [stderr]  --> src/main.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | #[macro_use]
[INFO] [stderr]   | ^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: #[warn(unused_imports)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/vm/bytecode.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 | /         return Routine {
[INFO] [stderr] 55 | |             num_parameters: num_parameters,
[INFO] [stderr] 56 | |             num_registers: num_registers,
[INFO] [stderr] 57 | |             instructions: instructions,
[INFO] [stderr] 58 | |             name: name,
[INFO] [stderr] 59 | |         };
[INFO] [stderr]    | |__________^
[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] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 54 |         Routine {
[INFO] [stderr] 55 |             num_parameters: num_parameters,
[INFO] [stderr] 56 |             num_registers: num_registers,
[INFO] [stderr] 57 |             instructions: instructions,
[INFO] [stderr] 58 |             name: name,
[INFO] [stderr] 59 |         }
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: unused macro definition
[INFO] [stderr]    --> src/vm/machine.rs:109:1
[INFO] [stderr]     |
[INFO] [stderr] 109 | / macro_rules! try_check{
[INFO] [stderr] 110 | |   ($e:expr) => (e)
[INFO] [stderr] 111 | | }
[INFO] [stderr]     | |_^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(unused_macros)] on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/vm/machine.rs:312:5
[INFO] [stderr]     |
[INFO] [stderr] 312 |     return Ok(());
[INFO] [stderr]     |     ^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[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/vm/machine.rs:188:9
[INFO] [stderr]     |
[INFO] [stderr] 188 |         return Ok(());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[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: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/frontend/parser.rs:177:13
[INFO] [stderr]     |
[INFO] [stderr] 177 |             r
[INFO] [stderr]     |             ^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::let_and_return)] on by default
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/frontend/parser.rs:176:21
[INFO] [stderr]     |
[INFO] [stderr] 176 |             let r = Decl::Routine(id, args, stmts);
[INFO] [stderr]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: returning the result of a let binding from a block. Consider returning the expression directly.
[INFO] [stderr]    --> src/frontend/parser.rs:184:9
[INFO] [stderr]     |
[INFO] [stderr] 184 |         p
[INFO] [stderr]     |         ^
[INFO] [stderr]     |
[INFO] [stderr] note: this expression can be directly returned
[INFO] [stderr]    --> src/frontend/parser.rs:183:17
[INFO] [stderr]     |
[INFO] [stderr] 183 |         let p = Program(ds);
[INFO] [stderr]     |                 ^^^^^^^^^^^
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#let_and_return
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]   --> src/frontend/codegen.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |         return self.instructions.len() - 1;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.instructions.len() - 1`
[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/frontend/codegen.rs:38:9
[INFO] [stderr]    |
[INFO] [stderr] 38 |         return self.instructions.len();
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `self.instructions.len()`
[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/frontend/codegen.rs:42:9
[INFO] [stderr]    |
[INFO] [stderr] 42 | /         return self.register_map
[INFO] [stderr] 43 | |             .get(&name)
[INFO] [stderr] 44 | |             .map_or_else(// No register found, try parameter
[INFO] [stderr] 45 | |                          || self.parameter_map.get(&name).map(|v| Parameter(*v)),
[INFO] [stderr] 46 | |                          // Some register found
[INFO] [stderr] 47 | |                          |v| Some(Register(*v)))
[INFO] [stderr] 48 | |             .ok_or_else(|| UnresolvedSymbol(name.to_string()));
[INFO] [stderr]    | |_______________________________________________________________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]    |
[INFO] [stderr] 42 |         self.register_map
[INFO] [stderr] 43 |             .get(&name)
[INFO] [stderr] 44 |             .map_or_else(// No register found, try parameter
[INFO] [stderr] 45 |                          || self.parameter_map.get(&name).map(|v| Parameter(*v)),
[INFO] [stderr] 46 |                          // Some register found
[INFO] [stderr] 47 |                          |v| Some(Register(*v)))
[INFO] [stderr]  ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/frontend/codegen.rs:290:9
[INFO] [stderr]     |
[INFO] [stderr] 290 |         return Ok(());
[INFO] [stderr]     |         ^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(())`
[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/frontend/codegen.rs:424:5
[INFO] [stderr]     |
[INFO] [stderr] 424 |     return Ok(final_register_names);
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(final_register_names)`
[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/frontend/codegen.rs:588:5
[INFO] [stderr]     |
[INFO] [stderr] 588 |     return Ok((ctx.vars, ctx.max_stack));
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok((ctx.vars, ctx.max_stack))`
[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 unit expression
[INFO] [stderr]    --> src/frontend/codegen.rs:447:17
[INFO] [stderr]     |
[INFO] [stderr] 447 |                 ()
[INFO] [stderr]     |                 ^^ help: remove the final `()`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::unused_unit)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unused_unit
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/frontend/codegen.rs:632:13
[INFO] [stderr]     |
[INFO] [stderr] 632 |             return map;
[INFO] [stderr]     |             ^^^^^^^^^^^ help: remove `return` as shown: `map`
[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/frontend/mod.rs:66:5
[INFO] [stderr]    |
[INFO] [stderr] 66 |     return Ok(program);
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `Ok(program)`
[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/tests.rs:371:9
[INFO] [stderr]     |
[INFO] [stderr] 371 | /         return match n {
[INFO] [stderr] 372 | |             0 => {
[INFO] [stderr] 373 | |                 Ok(as_program(bytecode::Routine::new("fib0".to_owned(),
[INFO] [stderr] 374 | |                                                      1,
[INFO] [stderr] ...   |
[INFO] [stderr] 432 | |             }
[INFO] [stderr] 433 | |         };
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 371 |         match n {
[INFO] [stderr] 372 |             0 => {
[INFO] [stderr] 373 |                 Ok(as_program(bytecode::Routine::new("fib0".to_owned(),
[INFO] [stderr] 374 |                                                      1,
[INFO] [stderr] 375 |                                                      0,
[INFO] [stderr] 376 |                                                      vec![bytecode::Instruction::Lit(0, 0),
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/tests.rs:437:9
[INFO] [stderr]     |
[INFO] [stderr] 437 | /         return match n {
[INFO] [stderr] 438 | |             0 => 0,
[INFO] [stderr] 439 | |             1 => a,
[INFO] [stderr] 440 | |             2 => a + b,
[INFO] [stderr] ...   |
[INFO] [stderr] 450 | |             }
[INFO] [stderr] 451 | |         };
[INFO] [stderr]     | |__________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#needless_return
[INFO] [stderr] help: remove `return` as shown
[INFO] [stderr]     |
[INFO] [stderr] 437 |         match n {
[INFO] [stderr] 438 |             0 => 0,
[INFO] [stderr] 439 |             1 => a,
[INFO] [stderr] 440 |             2 => a + b,
[INFO] [stderr] 441 |             n => {
[INFO] [stderr] 442 |                 let mut fim1 = b; //F_{i-1}
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: unneeded return statement
[INFO] [stderr]    --> src/tests.rs:480:9
[INFO] [stderr]     |
[INFO] [stderr] 480 |         return frontend::compile_function("fib_iter".to_string(), &["return", "n", "a", "b"], code);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: remove `return` as shown: `frontend::compile_function("fib_iter".to_string(), &["return", "n", "a", "b"], code)`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/vm/machine.rs:133:9
[INFO] [stderr]     |
[INFO] [stderr] 133 | /         match self {
[INFO] [stderr] 134 | |             &StackUnderflow => write!(f, "Stack underflow"),
[INFO] [stderr] 135 | |             &NotEnoughParameters(actual, expected) => write!(f,
[INFO] [stderr] 136 | |                 "Not enough arguments to call routine. Expected {} Actual {}", expected, actual),
[INFO] [stderr] ...   |
[INFO] [stderr] 145 | |                 "Routine index {} out of range. Maximum routine index {}", actual, maximum)
[INFO] [stderr] 146 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 133 |         match *self {
[INFO] [stderr] 134 |             StackUnderflow => write!(f, "Stack underflow"),
[INFO] [stderr] 135 |             NotEnoughParameters(actual, expected) => write!(f,
[INFO] [stderr] 136 |                 "Not enough arguments to call routine. Expected {} Actual {}", expected, actual),
[INFO] [stderr] 137 |             ParameterOutOfRange(actual, maximum) => write!(f,
[INFO] [stderr] 138 |                 "Parameter index {} out of range. Maximum parameter index {}", actual, maximum),
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/vm/machine.rs:308:13
[INFO] [stderr]     |
[INFO] [stderr] 308 |             frame.next_instruction = frame.next_instruction + 1;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `frame.next_instruction += 1`
[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: redundant closure found
[INFO] [stderr]   --> src/frontend/parser.rs:28:63
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let arg = (toy.reserved("ref").with(toy.identifier()).map(|id| Arg::ByRef(id)))
[INFO] [stderr]    |                                                               ^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `Arg::ByRef`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_closure)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]   --> src/frontend/parser.rs:43:75
[INFO] [stderr]    |
[INFO] [stderr] 43 |             Stmt::Condition(cond, if_block, opt_else_block.unwrap_or_else(|| Vec::new()))
[INFO] [stderr]    |                                                                           ^^^^^^^^^^^^^ help: remove closure as shown: `Vec::new`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/frontend/parser.rs:86:59
[INFO] [stderr]    |
[INFO] [stderr] 86 |             opt_args.map(|args| Expr::Function(id, args)).unwrap_or(Expr::Variable(id2))
[INFO] [stderr]    |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| Expr::Variable(id2))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/frontend/codegen.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 |         self.eval_stack_ptr = self.eval_stack_ptr + 1;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr += 1`
[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/frontend/codegen.rs:80:9
[INFO] [stderr]    |
[INFO] [stderr] 80 |         self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:105:9
[INFO] [stderr]     |
[INFO] [stderr] 105 |         self.eval_stack_ptr = self.eval_stack_ptr + paramoffset; // implicit result parameter, if present
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr += paramoffset`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:112:13
[INFO] [stderr]     |
[INFO] [stderr] 112 | /             match arg {
[INFO] [stderr] 113 | |                 &ByVal(ref value_expr) => {
[INFO] [stderr] 114 | |                     try!(self.compile_expr(&*value_expr));
[INFO] [stderr] 115 | |                 }
[INFO] [stderr] ...   |
[INFO] [stderr] 118 | |                 }
[INFO] [stderr] 119 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 112 |             match *arg {
[INFO] [stderr] 113 |                 ByVal(ref value_expr) => {
[INFO] [stderr] 114 |                     try!(self.compile_expr(&*value_expr));
[INFO] [stderr] 115 |                 }
[INFO] [stderr] 116 |                 ByRef(ref name) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/frontend/codegen.rs:121:13
[INFO] [stderr]     |
[INFO] [stderr] 121 |             i = i + 1;
[INFO] [stderr]     |             ^^^^^^^^^ help: replace it with: `i += 1`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:137:17
[INFO] [stderr]     |
[INFO] [stderr] 137 | /                 match arg {
[INFO] [stderr] 138 | |                     &ByRef(ref name) => {
[INFO] [stderr] 139 | |                         try!(self.emit_store_variable(&name[..]));
[INFO] [stderr] 140 | |                         false
[INFO] [stderr] 141 | |                     }
[INFO] [stderr] 142 | |                     _ => true,
[INFO] [stderr] 143 | |                 }
[INFO] [stderr]     | |_________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 137 |                 match *arg {
[INFO] [stderr] 138 |                     ByRef(ref name) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/frontend/codegen.rs:149:17
[INFO] [stderr]     |
[INFO] [stderr] 149 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:152:13
[INFO] [stderr]     |
[INFO] [stderr] 152 |             i = i + 1;
[INFO] [stderr]     |             ^^^^^^^^^ help: replace it with: `i += 1`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:166:9
[INFO] [stderr]     |
[INFO] [stderr] 166 | /         match expr {
[INFO] [stderr] 167 | |             &Addition(ref lhs, ref rhs) => {
[INFO] [stderr] 168 | |                 try!(self.compile_expr(&**lhs));
[INFO] [stderr] 169 | |                 try!(self.compile_expr(&**rhs));
[INFO] [stderr] ...   |
[INFO] [stderr] 288 | |             }
[INFO] [stderr] 289 | |         };
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 166 |         match *expr {
[INFO] [stderr] 167 |             Addition(ref lhs, ref rhs) => {
[INFO] [stderr] 168 |                 try!(self.compile_expr(&**lhs));
[INFO] [stderr] 169 |                 try!(self.compile_expr(&**rhs));
[INFO] [stderr] 170 |                 try!(self.static_eval_stack_min(2));
[INFO] [stderr] 171 |                 let lhs = self.eval_stack_ptr - 2;
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/frontend/codegen.rs:174:17
[INFO] [stderr]     |
[INFO] [stderr] 174 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:183:17
[INFO] [stderr]     |
[INFO] [stderr] 183 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:192:17
[INFO] [stderr]     |
[INFO] [stderr] 192 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:201:17
[INFO] [stderr]     |
[INFO] [stderr] 201 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:210:17
[INFO] [stderr]     |
[INFO] [stderr] 210 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:219:17
[INFO] [stderr]     |
[INFO] [stderr] 219 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:228:17
[INFO] [stderr]     |
[INFO] [stderr] 228 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:237:17
[INFO] [stderr]     |
[INFO] [stderr] 237 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:246:17
[INFO] [stderr]     |
[INFO] [stderr] 246 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:255:17
[INFO] [stderr]     |
[INFO] [stderr] 255 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:264:17
[INFO] [stderr]     |
[INFO] [stderr] 264 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:272:17
[INFO] [stderr]     |
[INFO] [stderr] 272 |                 self.eval_stack_ptr = self.eval_stack_ptr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr += 1`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:295:13
[INFO] [stderr]     |
[INFO] [stderr] 295 | /             match stmt {
[INFO] [stderr] 296 | |                 &Assign(ref var, ref rhs) => {
[INFO] [stderr] 297 | |                     try!(self.compile_expr(rhs));
[INFO] [stderr] 298 | |                     try!(self.emit_store_variable(&var[..]));
[INFO] [stderr] ...   |
[INFO] [stderr] 353 | |                 }
[INFO] [stderr] 354 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 295 |             match *stmt {
[INFO] [stderr] 296 |                 Assign(ref var, ref rhs) => {
[INFO] [stderr] 297 |                     try!(self.compile_expr(rhs));
[INFO] [stderr] 298 |                     try!(self.emit_store_variable(&var[..]));
[INFO] [stderr] 299 |                 }
[INFO] [stderr] 300 |                 Condition(ref cond, ref ifbranch, ref elsebranch) => {
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:388:9
[INFO] [stderr]     |
[INFO] [stderr] 388 | /         match self {
[INFO] [stderr] 389 | |             &UnresolvedSymbol(ref s) => write!(f, "Unresolved symbol: {}", s),
[INFO] [stderr] 390 | |             &UnsupportedExpr(ref e) => write!(f, "Unsupported expression: {:?}", e),
[INFO] [stderr] 391 | |             &DuplicateName(ref s) => write!(f, "Duplicate name: {}", s),
[INFO] [stderr] ...   |
[INFO] [stderr] 395 | |                     routine, expected, actual)
[INFO] [stderr] 396 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 388 |         match *self {
[INFO] [stderr] 389 |             UnresolvedSymbol(ref s) => write!(f, "Unresolved symbol: {}", s),
[INFO] [stderr] 390 |             UnsupportedExpr(ref e) => write!(f, "Unsupported expression: {:?}", e),
[INFO] [stderr] 391 |             DuplicateName(ref s) => write!(f, "Duplicate name: {}", s),
[INFO] [stderr] 392 |             InternalError(s) => write!(f, "Internal compiler error: {}", s),
[INFO] [stderr] 393 |             InsufficientArguments(ref routine, actual, expected) =>
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this lifetime isn't used in the function definition
[INFO] [stderr]    --> src/frontend/codegen.rs:402:29
[INFO] [stderr]     |
[INFO] [stderr] 402 | fn infer_register_names<'a, 'd>(routine_name: &str,
[INFO] [stderr]     |                             ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::extra_unused_lifetimes)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:443:9
[INFO] [stderr]     |
[INFO] [stderr] 443 | /         match expr {
[INFO] [stderr] 444 | |             &Variable(ref v) => {
[INFO] [stderr] 445 | |                 ctx.vars.insert(&v[..]);
[INFO] [stderr] 446 | |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr] ...   |
[INFO] [stderr] 516 | |             }
[INFO] [stderr] 517 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 443 |         match *expr {
[INFO] [stderr] 444 |             Variable(ref v) => {
[INFO] [stderr] 445 |                 ctx.vars.insert(&v[..]);
[INFO] [stderr] 446 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr] 447 |                 ()
[INFO] [stderr] 448 |             }
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/frontend/codegen.rs:446:17
[INFO] [stderr]     |
[INFO] [stderr] 446 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:451:17
[INFO] [stderr]     |
[INFO] [stderr] 451 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:456:17
[INFO] [stderr]     |
[INFO] [stderr] 456 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:461:17
[INFO] [stderr]     |
[INFO] [stderr] 461 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:466:17
[INFO] [stderr]     |
[INFO] [stderr] 466 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:471:17
[INFO] [stderr]     |
[INFO] [stderr] 471 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:476:17
[INFO] [stderr]     |
[INFO] [stderr] 476 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:481:17
[INFO] [stderr]     |
[INFO] [stderr] 481 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:486:17
[INFO] [stderr]     |
[INFO] [stderr] 486 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:491:17
[INFO] [stderr]     |
[INFO] [stderr] 491 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:496:17
[INFO] [stderr]     |
[INFO] [stderr] 496 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:501:17
[INFO] [stderr]     |
[INFO] [stderr] 501 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:505:17
[INFO] [stderr]     |
[INFO] [stderr] 505 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:515:17
[INFO] [stderr]     |
[INFO] [stderr] 515 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:540:13
[INFO] [stderr]     |
[INFO] [stderr] 540 | /             match arg {
[INFO] [stderr] 541 | |                 &ByVal(ref e) => {
[INFO] [stderr] 542 | |                     try!(list_vars_in_expr(ctx, &*e, stack_size));
[INFO] [stderr] 543 | |                 }
[INFO] [stderr] ...   |
[INFO] [stderr] 546 | |                 }
[INFO] [stderr] 547 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 540 |             match *arg {
[INFO] [stderr] 541 |                 ByVal(ref e) => {
[INFO] [stderr] 542 |                     try!(list_vars_in_expr(ctx, &*e, stack_size));
[INFO] [stderr] 543 |                 }
[INFO] [stderr] 544 |                 ByRef(ref v) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/frontend/codegen.rs:549:13
[INFO] [stderr]     |
[INFO] [stderr] 549 |             stack_size = stack_size + 1;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `stack_size += 1`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:559:13
[INFO] [stderr]     |
[INFO] [stderr] 559 | /             match stmt {
[INFO] [stderr] 560 | |                 &Assign(ref lhs, ref rhs) => {
[INFO] [stderr] 561 | |                     ctx.vars.insert(&lhs[..]);
[INFO] [stderr] 562 | |                     try!(list_vars_in_expr(ctx, rhs, 0));
[INFO] [stderr] ...   |
[INFO] [stderr] 575 | |                 }
[INFO] [stderr] 576 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 559 |             match *stmt {
[INFO] [stderr] 560 |                 Assign(ref lhs, ref rhs) => {
[INFO] [stderr] 561 |                     ctx.vars.insert(&lhs[..]);
[INFO] [stderr] 562 |                     try!(list_vars_in_expr(ctx, rhs, 0));
[INFO] [stderr] 563 |                 }
[INFO] [stderr] 564 |                 Condition(ref cond, ref ifbranch, ref elsebranch) => {
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/frontend/codegen.rs:630:17
[INFO] [stderr]     |
[INFO] [stderr] 630 |                 i = i + 1;
[INFO] [stderr]     |                 ^^^^^^^^^ help: replace it with: `i += 1`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:660:9
[INFO] [stderr]     |
[INFO] [stderr] 660 | /         match decl {
[INFO] [stderr] 661 | |             &Routine(ref name, ref parameter_names, _) => {
[INFO] [stderr] 662 | |                 let key = &name[..];
[INFO] [stderr] 663 | |                 if ctx.routine_map.contains_key(&key) {
[INFO] [stderr] ...   |
[INFO] [stderr] 672 | |             }
[INFO] [stderr] 673 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 660 |         match *decl {
[INFO] [stderr] 661 |             Routine(ref name, ref parameter_names, _) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/frontend/codegen.rs:671:17
[INFO] [stderr]     |
[INFO] [stderr] 671 |                 next_slot = next_slot + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `next_slot += 1`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:678:9
[INFO] [stderr]     |
[INFO] [stderr] 678 | /         match decl {
[INFO] [stderr] 679 | |             &Routine(ref name, ref parameter_names, ref stmts) => {
[INFO] [stderr] 680 | |                 let info = try!(ctx.routine_map
[INFO] [stderr] 681 | |                     .get(&name[..])
[INFO] [stderr] ...   |
[INFO] [stderr] 707 | |             }
[INFO] [stderr] 708 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 678 |         match *decl {
[INFO] [stderr] 679 |             Routine(ref name, ref parameter_names, ref stmts) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/frontend/mod.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 | /         match self {
[INFO] [stderr] 26 | |             &FrontendError::FeCodeGenError(ref e) => Some(e),
[INFO] [stderr] 27 | |             _ => None
[INFO] [stderr] 28 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 25 |         match *self {
[INFO] [stderr] 26 |             FrontendError::FeCodeGenError(ref e) => Some(e),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/frontend/mod.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 | /         match self {
[INFO] [stderr] 35 | |             &FrontendError::FeParserError(ref txt) => write!(f, "{}", txt),
[INFO] [stderr] 36 | |             &FrontendError::FeCodeGenError(ref e) => write!(f, "{}", e)
[INFO] [stderr] 37 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 34 |         match *self {
[INFO] [stderr] 35 |             FrontendError::FeParserError(ref txt) => write!(f, "{}", txt),
[INFO] [stderr] 36 |             FrontendError::FeCodeGenError(ref e) => write!(f, "{}", e)
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this `.fold` can be written more succinctly using another method
[INFO] [stderr]   --> src/frontend/mod.rs:65:65
[INFO] [stderr]    |
[INFO] [stderr] 65 |            program.routines.iter().map(|r| r.instructions.len()).fold(0, |l, r| l + r));
[INFO] [stderr]    |                                                                 ^^^^^^^^^^^^^^^^^^^^^^ help: try: `.sum()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unnecessary_fold)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/main.rs:54:9
[INFO] [stderr]    |
[INFO] [stderr] 54 | /         if let &Err(ref e) = arg_r {
[INFO] [stderr] 55 | |             write!(stderr(), "Failed to parse argument {}: {}", arg_n, e)
[INFO] [stderr] 56 | |                 .expect("Cannot write to stderr");
[INFO] [stderr] 57 | |             has_error = true;
[INFO] [stderr] 58 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 54 |         if let Err(ref e) = *arg_r {
[INFO] [stderr]    |                ^^^^^^^^^^   ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/vm/machine.rs:133:9
[INFO] [stderr]     |
[INFO] [stderr] 133 | /         match self {
[INFO] [stderr] 134 | |             &StackUnderflow => write!(f, "Stack underflow"),
[INFO] [stderr] 135 | |             &NotEnoughParameters(actual, expected) => write!(f,
[INFO] [stderr] 136 | |                 "Not enough arguments to call routine. Expected {} Actual {}", expected, actual),
[INFO] [stderr] ...   |
[INFO] [stderr] 145 | |                 "Routine index {} out of range. Maximum routine index {}", actual, maximum)
[INFO] [stderr] 146 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::match_ref_pats)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 133 |         match *self {
[INFO] [stderr] 134 |             StackUnderflow => write!(f, "Stack underflow"),
[INFO] [stderr] 135 |             NotEnoughParameters(actual, expected) => write!(f,
[INFO] [stderr] 136 |                 "Not enough arguments to call routine. Expected {} Actual {}", expected, actual),
[INFO] [stderr] 137 |             ParameterOutOfRange(actual, maximum) => write!(f,
[INFO] [stderr] 138 |                 "Parameter index {} out of range. Maximum parameter index {}", actual, maximum),
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/vm/machine.rs:308:13
[INFO] [stderr]     |
[INFO] [stderr] 308 |             frame.next_instruction = frame.next_instruction + 1;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `frame.next_instruction += 1`
[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: redundant closure found
[INFO] [stderr]   --> src/frontend/parser.rs:28:63
[INFO] [stderr]    |
[INFO] [stderr] 28 |     let arg = (toy.reserved("ref").with(toy.identifier()).map(|id| Arg::ByRef(id)))
[INFO] [stderr]    |                                                               ^^^^^^^^^^^^^^^^^^^ help: remove closure as shown: `Arg::ByRef`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::redundant_closure)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: redundant closure found
[INFO] [stderr]   --> src/frontend/parser.rs:43:75
[INFO] [stderr]    |
[INFO] [stderr] 43 |             Stmt::Condition(cond, if_block, opt_else_block.unwrap_or_else(|| Vec::new()))
[INFO] [stderr]    |                                                                           ^^^^^^^^^^^^^ help: remove closure as shown: `Vec::new`
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#redundant_closure
[INFO] [stderr] 
[INFO] [stderr] warning: use of `unwrap_or` followed by a function call
[INFO] [stderr]   --> src/frontend/parser.rs:86:59
[INFO] [stderr]    |
[INFO] [stderr] 86 |             opt_args.map(|args| Expr::Function(id, args)).unwrap_or(Expr::Variable(id2))
[INFO] [stderr]    |                                                           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: try this: `unwrap_or_else(|| Expr::Variable(id2))`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::or_fun_call)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#or_fun_call
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]   --> src/frontend/codegen.rs:65:9
[INFO] [stderr]    |
[INFO] [stderr] 65 |         self.eval_stack_ptr = self.eval_stack_ptr + 1;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr += 1`
[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/frontend/codegen.rs:80:9
[INFO] [stderr]    |
[INFO] [stderr] 80 |         self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:105:9
[INFO] [stderr]     |
[INFO] [stderr] 105 |         self.eval_stack_ptr = self.eval_stack_ptr + paramoffset; // implicit result parameter, if present
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr += paramoffset`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:112:13
[INFO] [stderr]     |
[INFO] [stderr] 112 | /             match arg {
[INFO] [stderr] 113 | |                 &ByVal(ref value_expr) => {
[INFO] [stderr] 114 | |                     try!(self.compile_expr(&*value_expr));
[INFO] [stderr] 115 | |                 }
[INFO] [stderr] ...   |
[INFO] [stderr] 118 | |                 }
[INFO] [stderr] 119 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 112 |             match *arg {
[INFO] [stderr] 113 |                 ByVal(ref value_expr) => {
[INFO] [stderr] 114 |                     try!(self.compile_expr(&*value_expr));
[INFO] [stderr] 115 |                 }
[INFO] [stderr] 116 |                 ByRef(ref name) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/frontend/codegen.rs:121:13
[INFO] [stderr]     |
[INFO] [stderr] 121 |             i = i + 1;
[INFO] [stderr]     |             ^^^^^^^^^ help: replace it with: `i += 1`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:137:17
[INFO] [stderr]     |
[INFO] [stderr] 137 | /                 match arg {
[INFO] [stderr] 138 | |                     &ByRef(ref name) => {
[INFO] [stderr] 139 | |                         try!(self.emit_store_variable(&name[..]));
[INFO] [stderr] 140 | |                         false
[INFO] [stderr] 141 | |                     }
[INFO] [stderr] 142 | |                     _ => true,
[INFO] [stderr] 143 | |                 }
[INFO] [stderr]     | |_________________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 137 |                 match *arg {
[INFO] [stderr] 138 |                     ByRef(ref name) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/frontend/codegen.rs:149:17
[INFO] [stderr]     |
[INFO] [stderr] 149 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:152:13
[INFO] [stderr]     |
[INFO] [stderr] 152 |             i = i + 1;
[INFO] [stderr]     |             ^^^^^^^^^ help: replace it with: `i += 1`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:166:9
[INFO] [stderr]     |
[INFO] [stderr] 166 | /         match expr {
[INFO] [stderr] 167 | |             &Addition(ref lhs, ref rhs) => {
[INFO] [stderr] 168 | |                 try!(self.compile_expr(&**lhs));
[INFO] [stderr] 169 | |                 try!(self.compile_expr(&**rhs));
[INFO] [stderr] ...   |
[INFO] [stderr] 288 | |             }
[INFO] [stderr] 289 | |         };
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 166 |         match *expr {
[INFO] [stderr] 167 |             Addition(ref lhs, ref rhs) => {
[INFO] [stderr] 168 |                 try!(self.compile_expr(&**lhs));
[INFO] [stderr] 169 |                 try!(self.compile_expr(&**rhs));
[INFO] [stderr] 170 |                 try!(self.static_eval_stack_min(2));
[INFO] [stderr] 171 |                 let lhs = self.eval_stack_ptr - 2;
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/frontend/codegen.rs:174:17
[INFO] [stderr]     |
[INFO] [stderr] 174 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:183:17
[INFO] [stderr]     |
[INFO] [stderr] 183 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:192:17
[INFO] [stderr]     |
[INFO] [stderr] 192 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:201:17
[INFO] [stderr]     |
[INFO] [stderr] 201 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:210:17
[INFO] [stderr]     |
[INFO] [stderr] 210 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:219:17
[INFO] [stderr]     |
[INFO] [stderr] 219 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:228:17
[INFO] [stderr]     |
[INFO] [stderr] 228 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:237:17
[INFO] [stderr]     |
[INFO] [stderr] 237 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:246:17
[INFO] [stderr]     |
[INFO] [stderr] 246 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:255:17
[INFO] [stderr]     |
[INFO] [stderr] 255 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:264:17
[INFO] [stderr]     |
[INFO] [stderr] 264 |                 self.eval_stack_ptr = self.eval_stack_ptr - 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr -= 1`
[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/frontend/codegen.rs:272:17
[INFO] [stderr]     |
[INFO] [stderr] 272 |                 self.eval_stack_ptr = self.eval_stack_ptr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `self.eval_stack_ptr += 1`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:295:13
[INFO] [stderr]     |
[INFO] [stderr] 295 | /             match stmt {
[INFO] [stderr] 296 | |                 &Assign(ref var, ref rhs) => {
[INFO] [stderr] 297 | |                     try!(self.compile_expr(rhs));
[INFO] [stderr] 298 | |                     try!(self.emit_store_variable(&var[..]));
[INFO] [stderr] ...   |
[INFO] [stderr] 353 | |                 }
[INFO] [stderr] 354 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 295 |             match *stmt {
[INFO] [stderr] 296 |                 Assign(ref var, ref rhs) => {
[INFO] [stderr] 297 |                     try!(self.compile_expr(rhs));
[INFO] [stderr] 298 |                     try!(self.emit_store_variable(&var[..]));
[INFO] [stderr] 299 |                 }
[INFO] [stderr] 300 |                 Condition(ref cond, ref ifbranch, ref elsebranch) => {
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:388:9
[INFO] [stderr]     |
[INFO] [stderr] 388 | /         match self {
[INFO] [stderr] 389 | |             &UnresolvedSymbol(ref s) => write!(f, "Unresolved symbol: {}", s),
[INFO] [stderr] 390 | |             &UnsupportedExpr(ref e) => write!(f, "Unsupported expression: {:?}", e),
[INFO] [stderr] 391 | |             &DuplicateName(ref s) => write!(f, "Duplicate name: {}", s),
[INFO] [stderr] ...   |
[INFO] [stderr] 395 | |                     routine, expected, actual)
[INFO] [stderr] 396 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 388 |         match *self {
[INFO] [stderr] 389 |             UnresolvedSymbol(ref s) => write!(f, "Unresolved symbol: {}", s),
[INFO] [stderr] 390 |             UnsupportedExpr(ref e) => write!(f, "Unsupported expression: {:?}", e),
[INFO] [stderr] 391 |             DuplicateName(ref s) => write!(f, "Duplicate name: {}", s),
[INFO] [stderr] 392 |             InternalError(s) => write!(f, "Internal compiler error: {}", s),
[INFO] [stderr] 393 |             InsufficientArguments(ref routine, actual, expected) =>
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: this lifetime isn't used in the function definition
[INFO] [stderr]    --> src/frontend/codegen.rs:402:29
[INFO] [stderr]     |
[INFO] [stderr] 402 | fn infer_register_names<'a, 'd>(routine_name: &str,
[INFO] [stderr]     |                             ^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::extra_unused_lifetimes)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#extra_unused_lifetimes
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:443:9
[INFO] [stderr]     |
[INFO] [stderr] 443 | /         match expr {
[INFO] [stderr] 444 | |             &Variable(ref v) => {
[INFO] [stderr] 445 | |                 ctx.vars.insert(&v[..]);
[INFO] [stderr] 446 | |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr] ...   |
[INFO] [stderr] 516 | |             }
[INFO] [stderr] 517 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 443 |         match *expr {
[INFO] [stderr] 444 |             Variable(ref v) => {
[INFO] [stderr] 445 |                 ctx.vars.insert(&v[..]);
[INFO] [stderr] 446 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr] 447 |                 ()
[INFO] [stderr] 448 |             }
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/frontend/codegen.rs:446:17
[INFO] [stderr]     |
[INFO] [stderr] 446 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:451:17
[INFO] [stderr]     |
[INFO] [stderr] 451 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:456:17
[INFO] [stderr]     |
[INFO] [stderr] 456 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:461:17
[INFO] [stderr]     |
[INFO] [stderr] 461 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:466:17
[INFO] [stderr]     |
[INFO] [stderr] 466 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:471:17
[INFO] [stderr]     |
[INFO] [stderr] 471 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:476:17
[INFO] [stderr]     |
[INFO] [stderr] 476 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:481:17
[INFO] [stderr]     |
[INFO] [stderr] 481 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:486:17
[INFO] [stderr]     |
[INFO] [stderr] 486 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:491:17
[INFO] [stderr]     |
[INFO] [stderr] 491 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:496:17
[INFO] [stderr]     |
[INFO] [stderr] 496 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:501:17
[INFO] [stderr]     |
[INFO] [stderr] 501 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:505:17
[INFO] [stderr]     |
[INFO] [stderr] 505 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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/frontend/codegen.rs:515:17
[INFO] [stderr]     |
[INFO] [stderr] 515 |                 size_for_expr = size_for_expr + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `size_for_expr += 1`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:540:13
[INFO] [stderr]     |
[INFO] [stderr] 540 | /             match arg {
[INFO] [stderr] 541 | |                 &ByVal(ref e) => {
[INFO] [stderr] 542 | |                     try!(list_vars_in_expr(ctx, &*e, stack_size));
[INFO] [stderr] 543 | |                 }
[INFO] [stderr] ...   |
[INFO] [stderr] 546 | |                 }
[INFO] [stderr] 547 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 540 |             match *arg {
[INFO] [stderr] 541 |                 ByVal(ref e) => {
[INFO] [stderr] 542 |                     try!(list_vars_in_expr(ctx, &*e, stack_size));
[INFO] [stderr] 543 |                 }
[INFO] [stderr] 544 |                 ByRef(ref v) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/frontend/codegen.rs:549:13
[INFO] [stderr]     |
[INFO] [stderr] 549 |             stack_size = stack_size + 1;
[INFO] [stderr]     |             ^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `stack_size += 1`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:559:13
[INFO] [stderr]     |
[INFO] [stderr] 559 | /             match stmt {
[INFO] [stderr] 560 | |                 &Assign(ref lhs, ref rhs) => {
[INFO] [stderr] 561 | |                     ctx.vars.insert(&lhs[..]);
[INFO] [stderr] 562 | |                     try!(list_vars_in_expr(ctx, rhs, 0));
[INFO] [stderr] ...   |
[INFO] [stderr] 575 | |                 }
[INFO] [stderr] 576 | |             }
[INFO] [stderr]     | |_____________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 559 |             match *stmt {
[INFO] [stderr] 560 |                 Assign(ref lhs, ref rhs) => {
[INFO] [stderr] 561 |                     ctx.vars.insert(&lhs[..]);
[INFO] [stderr] 562 |                     try!(list_vars_in_expr(ctx, rhs, 0));
[INFO] [stderr] 563 |                 }
[INFO] [stderr] 564 |                 Condition(ref cond, ref ifbranch, ref elsebranch) => {
[INFO] [stderr]   ...
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/frontend/codegen.rs:630:17
[INFO] [stderr]     |
[INFO] [stderr] 630 |                 i = i + 1;
[INFO] [stderr]     |                 ^^^^^^^^^ help: replace it with: `i += 1`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:660:9
[INFO] [stderr]     |
[INFO] [stderr] 660 | /         match decl {
[INFO] [stderr] 661 | |             &Routine(ref name, ref parameter_names, _) => {
[INFO] [stderr] 662 | |                 let key = &name[..];
[INFO] [stderr] 663 | |                 if ctx.routine_map.contains_key(&key) {
[INFO] [stderr] ...   |
[INFO] [stderr] 672 | |             }
[INFO] [stderr] 673 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 660 |         match *decl {
[INFO] [stderr] 661 |             Routine(ref name, ref parameter_names, _) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: manual implementation of an assign operation
[INFO] [stderr]    --> src/frontend/codegen.rs:671:17
[INFO] [stderr]     |
[INFO] [stderr] 671 |                 next_slot = next_slot + 1;
[INFO] [stderr]     |                 ^^^^^^^^^^^^^^^^^^^^^^^^^ help: replace it with: `next_slot += 1`
[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: you don't need to add `&` to all patterns
[INFO] [stderr]    --> src/frontend/codegen.rs:678:9
[INFO] [stderr]     |
[INFO] [stderr] 678 | /         match decl {
[INFO] [stderr] 679 | |             &Routine(ref name, ref parameter_names, ref stmts) => {
[INFO] [stderr] 680 | |                 let info = try!(ctx.routine_map
[INFO] [stderr] 681 | |                     .get(&name[..])
[INFO] [stderr] ...   |
[INFO] [stderr] 707 | |             }
[INFO] [stderr] 708 | |         }
[INFO] [stderr]     | |_________^
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]     |
[INFO] [stderr] 678 |         match *decl {
[INFO] [stderr] 679 |             Routine(ref name, ref parameter_names, ref stmts) => {
[INFO] [stderr]     |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/frontend/mod.rs:25:9
[INFO] [stderr]    |
[INFO] [stderr] 25 | /         match self {
[INFO] [stderr] 26 | |             &FrontendError::FeCodeGenError(ref e) => Some(e),
[INFO] [stderr] 27 | |             _ => None
[INFO] [stderr] 28 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 25 |         match *self {
[INFO] [stderr] 26 |             FrontendError::FeCodeGenError(ref e) => Some(e),
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: you don't need to add `&` to all patterns
[INFO] [stderr]   --> src/frontend/mod.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 | /         match self {
[INFO] [stderr] 35 | |             &FrontendError::FeParserError(ref txt) => write!(f, "{}", txt),
[INFO] [stderr] 36 | |             &FrontendError::FeCodeGenError(ref e) => write!(f, "{}", e)
[INFO] [stderr] 37 | |         }
[INFO] [stderr]    | |_________^
[INFO] [stderr]    |
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_ref_pats
[INFO] [stderr] help: instead of prefixing all patterns with `&`, you can dereference the expression
[INFO] [stderr]    |
[INFO] [stderr] 34 |         match *self {
[INFO] [stderr] 35 |             FrontendError::FeParserError(ref txt) => write!(f, "{}", txt),
[INFO] [stderr] 36 |             FrontendError::FeCodeGenError(ref e) => write!(f, "{}", e)
[INFO] [stderr]    |
[INFO] [stderr] 
[INFO] [stderr] warning: this `.fold` can be written more succinctly using another method
[INFO] [stderr]   --> src/frontend/mod.rs:65:65
[INFO] [stderr]    |
[INFO] [stderr] 65 |            program.routines.iter().map(|r| r.instructions.len()).fold(0, |l, r| l + r));
[INFO] [stderr]    |                                                                 ^^^^^^^^^^^^^^^^^^^^^^ help: try: `.sum()`
[INFO] [stderr]    |
[INFO] [stderr]    = note: #[warn(clippy::unnecessary_fold)] on by default
[INFO] [stderr]    = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#unnecessary_fold
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/tests.rs:413:26
[INFO] [stderr]     |
[INFO] [stderr] 413 |                 for i in 3..n + 1 {
[INFO] [stderr]     |                          ^^^^^^^^ help: use: `3..=n`
[INFO] [stderr]     |
[INFO] [stderr]     = note: #[warn(clippy::range_plus_one)] on by default
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr] warning: an inclusive range would be more readable
[INFO] [stderr]    --> src/tests.rs:444:26
[INFO] [stderr]     |
[INFO] [stderr] 444 |                 for _ in 3..n + 1 {
[INFO] [stderr]     |                          ^^^^^^^^ help: use: `3..=n`
[INFO] [stderr]     |
[INFO] [stderr]     = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#range_plus_one
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 16.67s
[INFO] running `"docker" "inspect" "dd1bba71c060f86279b99731fe8b16f97dd35a108178a01aaf06a4821b9e7597"`
[INFO] running `"docker" "rm" "-f" "dd1bba71c060f86279b99731fe8b16f97dd35a108178a01aaf06a4821b9e7597"`
[INFO] [stdout] dd1bba71c060f86279b99731fe8b16f97dd35a108178a01aaf06a4821b9e7597