[INFO] updating cached repository kanishkd4/Rust-by-example
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/kanishkd4/Rust-by-example
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/kanishkd4/Rust-by-example" "work/ex/beta-1.38-1/sources/1.37.0/gh/kanishkd4/Rust-by-example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/kanishkd4/Rust-by-example'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/kanishkd4/Rust-by-example" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kanishkd4/Rust-by-example"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kanishkd4/Rust-by-example'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] a2b88db631e7cfa65de6b348419da65cb5c3b8c7
[INFO] sha for GitHub repo kanishkd4/Rust-by-example: a2b88db631e7cfa65de6b348419da65cb5c3b8c7
[INFO] validating manifest of kanishkd4/Rust-by-example on toolchain 1.37.0
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] validating manifest of kanishkd4/Rust-by-example on toolchain beta-2019-08-13
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "read-manifest" "--manifest-path" "Cargo.toml"`
[INFO] started frobbing kanishkd4/Rust-by-example
[INFO] finished frobbing kanishkd4/Rust-by-example
[INFO] frobbed toml for kanishkd4/Rust-by-example written to work/ex/beta-1.38-1/sources/1.37.0/gh/kanishkd4/Rust-by-example/Cargo.toml
[INFO] started frobbing kanishkd4/Rust-by-example
[INFO] finished frobbing kanishkd4/Rust-by-example
[INFO] frobbed toml for kanishkd4/Rust-by-example written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kanishkd4/Rust-by-example/Cargo.toml
[INFO] crate kanishkd4/Rust-by-example already has a lockfile, it will not be regenerated
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+1.37.0" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing kanishkd4/Rust-by-example against beta-2019-08-13 for beta-1.38-1
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kanishkd4/Rust-by-example:/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=warn" "-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" "+beta-2019-08-13" "build" "--frozen"`
[INFO] [stdout] d10e47785c92fe36c933fcdec1d73622319fc4d5b0cefdb660e7e2ac60d52488
[INFO] running `"docker" "start" "-a" "d10e47785c92fe36c933fcdec1d73622319fc4d5b0cefdb660e7e2ac60d52488"`
[INFO] [stderr]    Compiling rust-by-example v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: type `s` should have an upper camel case name
[INFO] [stderr]   --> src/bin/c14_generics_bounds_where.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | struct s<T: Display>(T); // S can only be a type that implements the Display trait - so no vectors
[INFO] [stderr]    |        ^ help: convert the identifier to upper camel case: `S`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `printer`
[INFO] [stderr]  --> src/bin/c14_generics_bounds_where.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn printer<T: Display>(t: T) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `s`
[INFO] [stderr]   --> src/bin/c14_generics_bounds_where.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | struct s<T: Display>(T); // S can only be a type that implements the Display trait - so no vectors
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `foo`
[INFO] [stderr]  --> src/bin/c14_generics_functions_impl_traits.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn foo<T>(_arg: T) {} // becuase T has been specified as a generic type parameter using <T>, 
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `S`
[INFO] [stderr]   --> src/bin/c14_generics_functions_impl_traits.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | struct S(A); // concrete type S that takes concrete type A defined above // commented for struct S below
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SGen`
[INFO] [stderr]   --> src/bin/c14_generics_functions_impl_traits.rs:49:1
[INFO] [stderr]    |
[INFO] [stderr] 49 | struct SGen<T>(T); // Generic type SGen
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `reg_fn`
[INFO] [stderr]   --> src/bin/c14_generics_functions_impl_traits.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn reg_fn(_s: S) {} // a regular function that takes an argument of type S - not a generic function
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `gen_spec_t`
[INFO] [stderr]   --> src/bin/c14_generics_functions_impl_traits.rs:53:1
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn gen_spec_t(_s: SGen<A>) {} // this is also not a generic as SGen has been given the type A
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `gen_spec_i32`
[INFO] [stderr]   --> src/bin/c14_generics_functions_impl_traits.rs:54:1
[INFO] [stderr]    |
[INFO] [stderr] 54 | fn gen_spec_i32(_s: SGen<i32>) {} // this is also not a generic
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generic`
[INFO] [stderr]   --> src/bin/c14_generics_functions_impl_traits.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn generic<T>(_s: SGen<T>) {} // a generic function
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `S1`
[INFO] [stderr]   --> src/bin/c14_generics_functions_impl_traits.rs:59:1
[INFO] [stderr]    |
[INFO] [stderr] 59 | struct S1; // concrete type S
[INFO] [stderr]    | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `GenericVal`
[INFO] [stderr]   --> src/bin/c14_generics_functions_impl_traits.rs:60:1
[INFO] [stderr]    |
[INFO] [stderr] 60 | struct GenericVal<T>(T, ); // Generic type GenericVal
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Matrix`
[INFO] [stderr]   --> src/bin/c2_primitives.rs:94:1
[INFO] [stderr]    |
[INFO] [stderr] 94 | struct Matrix(f32, f32, f32, f32);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `Food` should have a snake case name
[INFO] [stderr]   --> src/bin/c18_error_option_unwrap.rs:81:21
[INFO] [stderr]    |
[INFO] [stderr] 81 |         Some(Peeled(Food)) => Some(Chopped(Food)),
[INFO] [stderr]    |                     ^^^^ help: convert the identifier to snake case: `food`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `Food` should have a snake case name
[INFO] [stderr]   --> src/bin/c18_error_option_unwrap.rs:87:26
[INFO] [stderr]    |
[INFO] [stderr] 87 |     chopped.map(|Chopped(Food)| Cooked(Food))
[INFO] [stderr]    |                          ^^^^ help: convert the identifier to snake case: `food`
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/bin/c8_flow_control_match.rs:10:11
[INFO] [stderr]    |
[INFO] [stderr] 10 |         13...19 => println!("A teen"), // match an inclusive range. I've only seen the pattern ... in a match. ..= also works
[INFO] [stderr]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/bin/c8_flow_control_match.rs:108:14
[INFO] [stderr]     |
[INFO] [stderr] 108 |         n @ 1...12 => println!("A child of {:?}", n), // again `...` instead of `..=` in match. Just stick to ..= in your own code
[INFO] [stderr]     |              ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/bin/c8_flow_control_match.rs:109:15
[INFO] [stderr]     |
[INFO] [stderr] 109 |         n @ 13...19 => println!("A child of age {:?}", n),
[INFO] [stderr]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `p1`
[INFO] [stderr]   --> src/bin/c3_custom_types_structs.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     p1: Point,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `p2`
[INFO] [stderr]   --> src/bin/c3_custom_types_structs.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     p2: Point,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Deep`
[INFO] [stderr]   --> src/bin/c1_formatted_print.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | struct Deep(Structure);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type `u64_t` should have an upper camel case name
[INFO] [stderr]   --> src/bin/c5_types.rs:14:6
[INFO] [stderr]    |
[INFO] [stderr] 14 | type u64_t = u64;
[INFO] [stderr]    |      ^^^^^ help: convert the identifier to upper camel case: `U64T`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `u64_t`
[INFO] [stderr]   --> src/bin/c5_types.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | type u64_t = u64;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `foo`
[INFO] [stderr]   --> src/bin/c9_higher_order_diverging_functions.rs:44:1
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn foo() -> ! {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type `web_event` should have an upper camel case name
[INFO] [stderr]  --> src/bin/c3_custom_types_enums1.rs:6:6
[INFO] [stderr]   |
[INFO] [stderr] 6 | enum web_event {
[INFO] [stderr]   |      ^^^^^^^^^ help: convert the identifier to upper camel case: `WebEvent`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `page_load` should have an upper camel case name
[INFO] [stderr]  --> src/bin/c3_custom_types_enums1.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     page_load,
[INFO] [stderr]   |     ^^^^^^^^^ help: convert the identifier to upper camel case: `PageLoad`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `page_unload` should have an upper camel case name
[INFO] [stderr]  --> src/bin/c3_custom_types_enums1.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     page_unload,
[INFO] [stderr]   |     ^^^^^^^^^^^ help: convert the identifier to upper camel case: `PageUnload`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `key_press` should have an upper camel case name
[INFO] [stderr]   --> src/bin/c3_custom_types_enums1.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     key_press(char),
[INFO] [stderr]    |     ^^^^^^^^^ help: convert the identifier to upper camel case: `KeyPress`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `paste` should have an upper camel case name
[INFO] [stderr]   --> src/bin/c3_custom_types_enums1.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     paste(String),
[INFO] [stderr]    |     ^^^^^ help: convert the identifier to upper camel case: `Paste`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `click` should have an upper camel case name
[INFO] [stderr]   --> src/bin/c3_custom_types_enums1.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     click { x: i64, y: i64 },
[INFO] [stderr]    |     ^^^^^ help: convert the identifier to upper camel case: `Click`
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::iter`
[INFO] [stderr]   --> src/bin/c17_macro_dry_dsl_variadics.rs:37:9
[INFO] [stderr]    |
[INFO] [stderr] 37 |     use std::iter;
[INFO] [stderr]    |         ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `add_assign`
[INFO] [stderr]   --> src/bin/c17_macro_dry_dsl_variadics.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |         fn $func<T: $bound<T, Output=T> + Copy>(xs: &mut Vec<T>, ys: &Vec<T>) {
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 32 | op!(add_assign, Add, +=, add);
[INFO] [stderr]    | ------------------------------ in this macro invocation
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mul_assign`
[INFO] [stderr]   --> src/bin/c17_macro_dry_dsl_variadics.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |         fn $func<T: $bound<T, Output=T> + Copy>(xs: &mut Vec<T>, ys: &Vec<T>) {
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 33 | op!(mul_assign, Mul, *=, mul);
[INFO] [stderr]    | ------------------------------ in this macro invocation
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `sub_assign`
[INFO] [stderr]   --> src/bin/c17_macro_dry_dsl_variadics.rs:21:9
[INFO] [stderr]    |
[INFO] [stderr] 21 |         fn $func<T: $bound<T, Output=T> + Copy>(xs: &mut Vec<T>, ys: &Vec<T>) {
[INFO] [stderr]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] ...
[INFO] [stderr] 34 | op!(sub_assign, Sub, -=, sub);  
[INFO] [stderr]    | ------------------------------ in this macro invocation
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 7.17s
[INFO] running `"docker" "inspect" "d10e47785c92fe36c933fcdec1d73622319fc4d5b0cefdb660e7e2ac60d52488"`
[INFO] running `"docker" "rm" "-f" "d10e47785c92fe36c933fcdec1d73622319fc4d5b0cefdb660e7e2ac60d52488"`
[INFO] [stdout] d10e47785c92fe36c933fcdec1d73622319fc4d5b0cefdb660e7e2ac60d52488
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kanishkd4/Rust-by-example:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen" "--no-run"`
[INFO] [stdout] 2635587e6647fcf1304f321080e52aa26b2693afe78db1f503589634d4e3351e
[INFO] running `"docker" "start" "-a" "2635587e6647fcf1304f321080e52aa26b2693afe78db1f503589634d4e3351e"`
[INFO] [stderr]    Compiling rust-by-example v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: variable `Food` should have a snake case name
[INFO] [stderr]   --> src/bin/c18_error_option_unwrap.rs:81:21
[INFO] [stderr]    |
[INFO] [stderr] 81 |         Some(Peeled(Food)) => Some(Chopped(Food)),
[INFO] [stderr]    |                     ^^^^ help: convert the identifier to snake case: `food`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_snake_case)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable `Food` should have a snake case name
[INFO] [stderr]   --> src/bin/c18_error_option_unwrap.rs:87:26
[INFO] [stderr]    |
[INFO] [stderr] 87 |     chopped.map(|Chopped(Food)| Cooked(Food))
[INFO] [stderr]    |                          ^^^^ help: convert the identifier to snake case: `food`
[INFO] [stderr] 
[INFO] [stderr] warning: type `s` should have an upper camel case name
[INFO] [stderr]   --> src/bin/c14_generics_bounds_where.rs:12:8
[INFO] [stderr]    |
[INFO] [stderr] 12 | struct s<T: Display>(T); // S can only be a type that implements the Display trait - so no vectors
[INFO] [stderr]    |        ^ help: convert the identifier to upper camel case: `S`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `printer`
[INFO] [stderr]  --> src/bin/c14_generics_bounds_where.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn printer<T: Display>(t: T) {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `s`
[INFO] [stderr]   --> src/bin/c14_generics_bounds_where.rs:12:1
[INFO] [stderr]    |
[INFO] [stderr] 12 | struct s<T: Display>(T); // S can only be a type that implements the Display trait - so no vectors
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type `u64_t` should have an upper camel case name
[INFO] [stderr]   --> src/bin/c5_types.rs:14:6
[INFO] [stderr]    |
[INFO] [stderr] 14 | type u64_t = u64;
[INFO] [stderr]    |      ^^^^^ help: convert the identifier to upper camel case: `U64T`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `u64_t`
[INFO] [stderr]   --> src/bin/c5_types.rs:14:1
[INFO] [stderr]    |
[INFO] [stderr] 14 | type u64_t = u64;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `p1`
[INFO] [stderr]   --> src/bin/c3_custom_types_structs.rs:25:5
[INFO] [stderr]    |
[INFO] [stderr] 25 |     p1: Point,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `p2`
[INFO] [stderr]   --> src/bin/c3_custom_types_structs.rs:26:5
[INFO] [stderr]    |
[INFO] [stderr] 26 |     p2: Point,
[INFO] [stderr]    |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Matrix`
[INFO] [stderr]   --> src/bin/c2_primitives.rs:94:1
[INFO] [stderr]    |
[INFO] [stderr] 94 | struct Matrix(f32, f32, f32, f32);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `foo`
[INFO] [stderr]  --> src/bin/c14_generics_functions_impl_traits.rs:8:1
[INFO] [stderr]   |
[INFO] [stderr] 8 | fn foo<T>(_arg: T) {} // becuase T has been specified as a generic type parameter using <T>, 
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `S`
[INFO] [stderr]   --> src/bin/c14_generics_functions_impl_traits.rs:48:1
[INFO] [stderr]    |
[INFO] [stderr] 48 | struct S(A); // concrete type S that takes concrete type A defined above // commented for struct S below
[INFO] [stderr]    | ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `SGen`
[INFO] [stderr]   --> src/bin/c14_generics_functions_impl_traits.rs:49:1
[INFO] [stderr]    |
[INFO] [stderr] 49 | struct SGen<T>(T); // Generic type SGen
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `reg_fn`
[INFO] [stderr]   --> src/bin/c14_generics_functions_impl_traits.rs:51:1
[INFO] [stderr]    |
[INFO] [stderr] 51 | fn reg_fn(_s: S) {} // a regular function that takes an argument of type S - not a generic function
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `gen_spec_t`
[INFO] [stderr]   --> src/bin/c14_generics_functions_impl_traits.rs:53:1
[INFO] [stderr]    |
[INFO] [stderr] 53 | fn gen_spec_t(_s: SGen<A>) {} // this is also not a generic as SGen has been given the type A
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `gen_spec_i32`
[INFO] [stderr]   --> src/bin/c14_generics_functions_impl_traits.rs:54:1
[INFO] [stderr]    |
[INFO] [stderr] 54 | fn gen_spec_i32(_s: SGen<i32>) {} // this is also not a generic
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `generic`
[INFO] [stderr]   --> src/bin/c14_generics_functions_impl_traits.rs:55:1
[INFO] [stderr]    |
[INFO] [stderr] 55 | fn generic<T>(_s: SGen<T>) {} // a generic function
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `S1`
[INFO] [stderr]   --> src/bin/c14_generics_functions_impl_traits.rs:59:1
[INFO] [stderr]    |
[INFO] [stderr] 59 | struct S1; // concrete type S
[INFO] [stderr]    | ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `GenericVal`
[INFO] [stderr]   --> src/bin/c14_generics_functions_impl_traits.rs:60:1
[INFO] [stderr]    |
[INFO] [stderr] 60 | struct GenericVal<T>(T, ); // Generic type GenericVal
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]   --> src/bin/c8_flow_control_match.rs:10:11
[INFO] [stderr]    |
[INFO] [stderr] 10 |         13...19 => println!("A teen"), // match an inclusive range. I've only seen the pattern ... in a match. ..= also works
[INFO] [stderr]    |           ^^^ help: use `..=` for an inclusive range
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(ellipsis_inclusive_range_patterns)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/bin/c8_flow_control_match.rs:108:14
[INFO] [stderr]     |
[INFO] [stderr] 108 |         n @ 1...12 => println!("A child of {:?}", n), // again `...` instead of `..=` in match. Just stick to ..= in your own code
[INFO] [stderr]     |              ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: `...` range patterns are deprecated
[INFO] [stderr]    --> src/bin/c8_flow_control_match.rs:109:15
[INFO] [stderr]     |
[INFO] [stderr] 109 |         n @ 13...19 => println!("A child of age {:?}", n),
[INFO] [stderr]     |               ^^^ help: use `..=` for an inclusive range
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Deep`
[INFO] [stderr]   --> src/bin/c1_formatted_print.rs:34:1
[INFO] [stderr]    |
[INFO] [stderr] 34 | struct Deep(Structure);
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `foo`
[INFO] [stderr]   --> src/bin/c9_higher_order_diverging_functions.rs:44:1
[INFO] [stderr]    |
[INFO] [stderr] 44 | fn foo() -> ! {
[INFO] [stderr]    | ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: type `web_event` should have an upper camel case name
[INFO] [stderr]  --> src/bin/c3_custom_types_enums1.rs:6:6
[INFO] [stderr]   |
[INFO] [stderr] 6 | enum web_event {
[INFO] [stderr]   |      ^^^^^^^^^ help: convert the identifier to upper camel case: `WebEvent`
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(non_camel_case_types)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variant `page_load` should have an upper camel case name
[INFO] [stderr]  --> src/bin/c3_custom_types_enums1.rs:8:5
[INFO] [stderr]   |
[INFO] [stderr] 8 |     page_load,
[INFO] [stderr]   |     ^^^^^^^^^ help: convert the identifier to upper camel case: `PageLoad`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `page_unload` should have an upper camel case name
[INFO] [stderr]  --> src/bin/c3_custom_types_enums1.rs:9:5
[INFO] [stderr]   |
[INFO] [stderr] 9 |     page_unload,
[INFO] [stderr]   |     ^^^^^^^^^^^ help: convert the identifier to upper camel case: `PageUnload`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `key_press` should have an upper camel case name
[INFO] [stderr]   --> src/bin/c3_custom_types_enums1.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     key_press(char),
[INFO] [stderr]    |     ^^^^^^^^^ help: convert the identifier to upper camel case: `KeyPress`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `paste` should have an upper camel case name
[INFO] [stderr]   --> src/bin/c3_custom_types_enums1.rs:12:5
[INFO] [stderr]    |
[INFO] [stderr] 12 |     paste(String),
[INFO] [stderr]    |     ^^^^^ help: convert the identifier to upper camel case: `Paste`
[INFO] [stderr] 
[INFO] [stderr] warning: variant `click` should have an upper camel case name
[INFO] [stderr]   --> src/bin/c3_custom_types_enums1.rs:14:5
[INFO] [stderr]    |
[INFO] [stderr] 14 |     click { x: i64, y: i64 },
[INFO] [stderr]    |     ^^^^^ help: convert the identifier to upper camel case: `Click`
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 6.75s
[INFO] running `"docker" "inspect" "2635587e6647fcf1304f321080e52aa26b2693afe78db1f503589634d4e3351e"`
[INFO] running `"docker" "rm" "-f" "2635587e6647fcf1304f321080e52aa26b2693afe78db1f503589634d4e3351e"`
[INFO] [stdout] 2635587e6647fcf1304f321080e52aa26b2693afe78db1f503589634d4e3351e
[INFO] running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/beta-1.38-1/worker-2/beta-2019-08-13:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/kanishkd4/Rust-by-example:/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=warn" "-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" "+beta-2019-08-13" "test" "--frozen"`
[INFO] [stdout] 02201bbeec3dc4d98dfe8e221939d466800a74b04b8bbe2470b4e2b3f94a1877
[INFO] running `"docker" "start" "-a" "02201bbeec3dc4d98dfe8e221939d466800a74b04b8bbe2470b4e2b3f94a1877"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/c10_modules_use_self_hierarchy-3b5b405782211f69
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c10_modules_visibility-277b8d26b885671c
[INFO] [stderr]      Running /opt/crater/target/debug/deps/c14_generics_associated_phantom-f515856468db5045
[INFO] [stdout] 
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[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c14_generics_functions_impl_traits-384c4d9ddcf2dde4
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
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[INFO] [stdout] 
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c15_scoping_borrowing-3a16e68e65fde465
[INFO] [stdout] 
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c15_scoping_lifetimes1-658a25ca4589e7ba
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
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[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c15_scoping_lifetimes2-0414853127ea7fc2
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/c15_scoping_lifetimes3-83622a12f7b7e381
[INFO] [stdout] running 0 tests
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c15_scoping_ownership-c01b37cc2bbd5c7e
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c16_traits-0d76304b35241f8d
[INFO] [stdout] 
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c16_traits_derive_op_drop-58f9659a3b6b977a
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c16_traits_iter_clone-dabdbd4c10c3b9e9
[INFO] [stderr]      Running /opt/crater/target/debug/deps/c17_macro_dry_dsl_variadics-9c545b069595bcd6
[INFO] [stdout] 
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[INFO] [stdout] running 3 tests
[INFO] [stdout] test test::add_assign ... ok
[INFO] [stdout] test test::mul_assign ... ok
[INFO] [stderr]      Running /opt/crater/target/debug/deps/c17_macro_rules_syntax-03dd63489d0ec961
[INFO] [stdout] test test::sub_assign ... ok
[INFO] [stdout] 
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c18_error_result-dcaa89bac3015e68
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c1_formatted_print-aa418bb50bad981b
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[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/c1_hello_world-9c9cf36b68f38fb4
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c2_primitives-5647c6584925bf59
[INFO] [stderr]      Running /opt/crater/target/debug/deps/c3_constants-918cad5b0947731e
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c3_custom_types_enums1-7038e678ea143e86
[INFO] [stdout] running 0 tests
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[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] [stderr]      Running /opt/crater/target/debug/deps/c3_custom_types_enums2-6b0c4afd847e283f
[INFO] [stderr]      Running /opt/crater/target/debug/deps/c3_custom_types_structs-55592aee505c7714
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c4_variable_bindings-0f5802df8a07a2ec
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c5_types-17c72d468c1a5309
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c6_conversions-9046e3fc234bc55b
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c8_flow_control_ifelse_loops-e4bd292303988936
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c9_functions_closures-76dcf7dd01fa9585
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c9_functions_methods-b7ffca4e4f0e7a4e
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[INFO] [stderr]      Running /opt/crater/target/debug/deps/c9_higher_order_diverging_functions-409bf773f3fb37ff
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "02201bbeec3dc4d98dfe8e221939d466800a74b04b8bbe2470b4e2b3f94a1877"`
[INFO] running `"docker" "rm" "-f" "02201bbeec3dc4d98dfe8e221939d466800a74b04b8bbe2470b4e2b3f94a1877"`
[INFO] [stdout] 02201bbeec3dc4d98dfe8e221939d466800a74b04b8bbe2470b4e2b3f94a1877