Nov 16 08:05:56.522 INFO testing wu1274704958/LinkedList against master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c for pr-55982
Nov 16 08:05:56.522 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-6/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-alt build --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 16 08:05:56.716 INFO [stdout] 8ffb8989e5fc084e933514f9e0af8216717f68aab2c537c11b02bea9a28788d8
Nov 16 08:05:56.718 INFO running `"docker" "start" "-a" "8ffb8989e5fc084e933514f9e0af8216717f68aab2c537c11b02bea9a28788d8"`
Nov 16 08:05:57.133 INFO [stderr] usermod: no changes
Nov 16 08:05:57.158 INFO [stderr]    Compiling LinkedList v0.1.0 (/source)
Nov 16 08:05:57.259 INFO [stderr] warning: unused import: `std::cell::Ref`
Nov 16 08:05:57.259 INFO [stderr]  --> src/lib.rs:7:5
Nov 16 08:05:57.259 INFO [stderr]   |
Nov 16 08:05:57.259 INFO [stderr] 7 | use std::cell::Ref;
Nov 16 08:05:57.259 INFO [stderr]   |     ^^^^^^^^^^^^^^
Nov 16 08:05:57.259 INFO [stderr]   |
Nov 16 08:05:57.259 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 16 08:05:57.259 INFO [stderr] 
Nov 16 08:05:57.259 INFO [stderr] warning: unused import: `std::convert`
Nov 16 08:05:57.259 INFO [stderr]  --> src/lib.rs:8:5
Nov 16 08:05:57.259 INFO [stderr]   |
Nov 16 08:05:57.259 INFO [stderr] 8 | use std::convert;
Nov 16 08:05:57.259 INFO [stderr]   |     ^^^^^^^^^^^^
Nov 16 08:05:57.259 INFO [stderr] 
Nov 16 08:05:57.322 INFO [stderr] warning: unused variable: `i`
Nov 16 08:05:57.322 INFO [stderr]   --> src/lib.rs:59:13
Nov 16 08:05:57.322 INFO [stderr]    |
Nov 16 08:05:57.322 INFO [stderr] 59 |         for i in 0..index {
Nov 16 08:05:57.322 INFO [stderr]    |             ^ help: consider using `_i` instead
Nov 16 08:05:57.322 INFO [stderr]    |
Nov 16 08:05:57.322 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 16 08:05:57.322 INFO [stderr] 
Nov 16 08:05:57.322 INFO [stderr] warning: unused variable: `i`
Nov 16 08:05:57.322 INFO [stderr]    --> src/lib.rs:147:17
Nov 16 08:05:57.322 INFO [stderr]     |
Nov 16 08:05:57.322 INFO [stderr] 147 |             for i in 0..(index - 1) {
Nov 16 08:05:57.322 INFO [stderr]     |                 ^ help: consider using `_i` instead
Nov 16 08:05:57.322 INFO [stderr] 
Nov 16 08:05:57.328 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:05:57.329 INFO [stderr]   --> src/lib.rs:84:13
Nov 16 08:05:57.329 INFO [stderr]    |
Nov 16 08:05:57.329 INFO [stderr] 84 |         let mut c: *mut Node<T>;
Nov 16 08:05:57.329 INFO [stderr]    |             ----^
Nov 16 08:05:57.329 INFO [stderr]    |             |
Nov 16 08:05:57.329 INFO [stderr]    |             help: remove this `mut`
Nov 16 08:05:57.329 INFO [stderr]    |
Nov 16 08:05:57.329 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 16 08:05:57.329 INFO [stderr] 
Nov 16 08:05:57.329 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:05:57.329 INFO [stderr]   --> src/lib.rs:85:13
Nov 16 08:05:57.329 INFO [stderr]    |
Nov 16 08:05:57.329 INFO [stderr] 85 |         let mut a: *mut Option<Rc<RefCell<Node<T>>>>;
Nov 16 08:05:57.329 INFO [stderr]    |             ----^
Nov 16 08:05:57.329 INFO [stderr]    |             |
Nov 16 08:05:57.329 INFO [stderr]    |             help: remove this `mut`
Nov 16 08:05:57.329 INFO [stderr] 
Nov 16 08:05:57.329 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:05:57.329 INFO [stderr]    --> src/lib.rs:101:13
Nov 16 08:05:57.329 INFO [stderr]     |
Nov 16 08:05:57.329 INFO [stderr] 101 |         let mut a: *mut Option<Rc<RefCell<Node<T>>>>;
Nov 16 08:05:57.329 INFO [stderr]     |             ----^
Nov 16 08:05:57.329 INFO [stderr]     |             |
Nov 16 08:05:57.329 INFO [stderr]     |             help: remove this `mut`
Nov 16 08:05:57.329 INFO [stderr] 
Nov 16 08:05:57.329 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:05:57.329 INFO [stderr]    --> src/lib.rs:102:13
Nov 16 08:05:57.329 INFO [stderr]     |
Nov 16 08:05:57.329 INFO [stderr] 102 |         let mut b: *mut T;
Nov 16 08:05:57.329 INFO [stderr]     |             ----^
Nov 16 08:05:57.329 INFO [stderr]     |             |
Nov 16 08:05:57.329 INFO [stderr]     |             help: remove this `mut`
Nov 16 08:05:57.329 INFO [stderr] 
Nov 16 08:05:57.331 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:05:57.331 INFO [stderr]    --> src/lib.rs:122:13
Nov 16 08:05:57.331 INFO [stderr]     |
Nov 16 08:05:57.331 INFO [stderr] 122 |         let mut last: *mut Node<T>;
Nov 16 08:05:57.331 INFO [stderr]     |             ----^^^^
Nov 16 08:05:57.331 INFO [stderr]     |             |
Nov 16 08:05:57.331 INFO [stderr]     |             help: remove this `mut`
Nov 16 08:05:57.331 INFO [stderr] 
Nov 16 08:05:57.331 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:05:57.331 INFO [stderr]    --> src/lib.rs:123:13
Nov 16 08:05:57.331 INFO [stderr]     |
Nov 16 08:05:57.331 INFO [stderr] 123 |         let mut mid: Rc<RefCell<Node<T>>>;
Nov 16 08:05:57.331 INFO [stderr]     |             ----^^^
Nov 16 08:05:57.331 INFO [stderr]     |             |
Nov 16 08:05:57.331 INFO [stderr]     |             help: remove this `mut`
Nov 16 08:05:57.331 INFO [stderr] 
Nov 16 08:05:57.331 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:05:57.331 INFO [stderr]    --> src/lib.rs:124:13
Nov 16 08:05:57.331 INFO [stderr]     |
Nov 16 08:05:57.331 INFO [stderr] 124 |         let mut next: Rc<RefCell<Node<T>>>;
Nov 16 08:05:57.331 INFO [stderr]     |             ----^^^^
Nov 16 08:05:57.331 INFO [stderr]     |             |
Nov 16 08:05:57.331 INFO [stderr]     |             help: remove this `mut`
Nov 16 08:05:57.331 INFO [stderr] 
Nov 16 08:05:57.336 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:05:57.337 INFO [stderr]    --> src/lib.rs:216:13
Nov 16 08:05:57.337 INFO [stderr]     |
Nov 16 08:05:57.337 INFO [stderr] 216 |         let mut a : &'a Rc<RefCell<Node<T>>>;
Nov 16 08:05:57.337 INFO [stderr]     |             ----^
Nov 16 08:05:57.337 INFO [stderr]     |             |
Nov 16 08:05:57.337 INFO [stderr]     |             help: remove this `mut`
Nov 16 08:05:57.337 INFO [stderr] 
Nov 16 08:05:57.337 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:05:57.337 INFO [stderr]    --> src/lib.rs:217:13
Nov 16 08:05:57.337 INFO [stderr]     |
Nov 16 08:05:57.337 INFO [stderr] 217 |         let mut b :  RefMut<Node<T>>;
Nov 16 08:05:57.337 INFO [stderr]     |             ----^
Nov 16 08:05:57.337 INFO [stderr]     |             |
Nov 16 08:05:57.337 INFO [stderr]     |             help: remove this `mut`
Nov 16 08:05:57.337 INFO [stderr] 
Nov 16 08:05:57.337 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:05:57.337 INFO [stderr]    --> src/lib.rs:218:13
Nov 16 08:05:57.337 INFO [stderr]     |
Nov 16 08:05:57.337 INFO [stderr] 218 |         let mut c : * mut T;
Nov 16 08:05:57.337 INFO [stderr]     |             ----^
Nov 16 08:05:57.337 INFO [stderr]     |             |
Nov 16 08:05:57.337 INFO [stderr]     |             help: remove this `mut`
Nov 16 08:05:57.337 INFO [stderr] 
Nov 16 08:05:57.337 INFO [stderr] warning: crate `LinkedList` should have a snake case name such as `linked_list`
Nov 16 08:05:57.337 INFO [stderr]   |
Nov 16 08:05:57.337 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Nov 16 08:05:57.337 INFO [stderr] 
Nov 16 08:05:57.337 INFO [stderr] warning: structure field `phantomData` should have a snake case name such as `phantom_data`
Nov 16 08:05:57.337 INFO [stderr]   --> src/lib.rs:17:5
Nov 16 08:05:57.337 INFO [stderr]    |
Nov 16 08:05:57.337 INFO [stderr] 17 |     phantomData : PhantomData<&'a T>
Nov 16 08:05:57.337 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 08:05:57.337 INFO [stderr] 
Nov 16 08:05:57.337 INFO [stderr] warning: method `getSize` should have a snake case name such as `get_size`
Nov 16 08:05:57.337 INFO [stderr]   --> src/lib.rs:76:5
Nov 16 08:05:57.337 INFO [stderr]    |
Nov 16 08:05:57.337 INFO [stderr] 76 | /     pub fn getSize(&self) -> u32 {
Nov 16 08:05:57.337 INFO [stderr] 77 | |         self.size
Nov 16 08:05:57.337 INFO [stderr] 78 | |     }
Nov 16 08:05:57.337 INFO [stderr]    | |_____^
Nov 16 08:05:57.337 INFO [stderr] 
Nov 16 08:05:57.337 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 08:05:57.337 INFO [stderr]    --> src/lib.rs:188:13
Nov 16 08:05:57.337 INFO [stderr]     |
Nov 16 08:05:57.337 INFO [stderr] 188 |             write!(f, "[ ");
Nov 16 08:05:57.337 INFO [stderr]     |             ^^^^^^^^^^^^^^^^
Nov 16 08:05:57.337 INFO [stderr]     |
Nov 16 08:05:57.337 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 16 08:05:57.337 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 08:05:57.337 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 16 08:05:57.337 INFO [stderr] 
Nov 16 08:05:57.337 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 08:05:57.337 INFO [stderr]    --> src/lib.rs:194:29
Nov 16 08:05:57.337 INFO [stderr]     |
Nov 16 08:05:57.337 INFO [stderr] 194 |                             write!(f, "{}", *b);
Nov 16 08:05:57.337 INFO [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^
Nov 16 08:05:57.337 INFO [stderr]     |
Nov 16 08:05:57.337 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 08:05:57.337 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 16 08:05:57.337 INFO [stderr] 
Nov 16 08:05:57.337 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 08:05:57.337 INFO [stderr]    --> src/lib.rs:196:29
Nov 16 08:05:57.337 INFO [stderr]     |
Nov 16 08:05:57.337 INFO [stderr] 196 |                             write!(f, "{},", *b);
Nov 16 08:05:57.337 INFO [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^
Nov 16 08:05:57.337 INFO [stderr]     |
Nov 16 08:05:57.337 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 08:05:57.337 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 16 08:05:57.337 INFO [stderr] 
Nov 16 08:05:57.337 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 08:05:57.337 INFO [stderr]    --> src/lib.rs:201:25
Nov 16 08:05:57.337 INFO [stderr]     |
Nov 16 08:05:57.337 INFO [stderr] 201 |                         write!(f, " ]");
Nov 16 08:05:57.338 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^
Nov 16 08:05:57.338 INFO [stderr]     |
Nov 16 08:05:57.338 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 08:05:57.338 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 16 08:05:57.338 INFO [stderr] 
Nov 16 08:05:57.543 INFO [stderr] warning: function is never used: `test2`
Nov 16 08:05:57.543 INFO [stderr]   --> src/main.rs:68:1
Nov 16 08:05:57.543 INFO [stderr]    |
Nov 16 08:05:57.543 INFO [stderr] 68 | fn test2()
Nov 16 08:05:57.543 INFO [stderr]    | ^^^^^^^^^^
Nov 16 08:05:57.543 INFO [stderr]    |
Nov 16 08:05:57.543 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 16 08:05:57.543 INFO [stderr] 
Nov 16 08:05:57.543 INFO [stderr] warning: function is never used: `test3`
Nov 16 08:05:57.544 INFO [stderr]   --> src/main.rs:75:1
Nov 16 08:05:57.544 INFO [stderr]    |
Nov 16 08:05:57.544 INFO [stderr] 75 | fn test3()
Nov 16 08:05:57.544 INFO [stderr]    | ^^^^^^^^^^
Nov 16 08:05:57.544 INFO [stderr] 
Nov 16 08:05:57.544 INFO [stderr] warning: crate `LinkedList` should have a snake case name such as `linked_list`
Nov 16 08:05:57.544 INFO [stderr]   |
Nov 16 08:05:57.544 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Nov 16 08:05:57.544 INFO [stderr] 
Nov 16 08:05:57.995 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.84s
Nov 16 08:05:57.995 INFO [stderr] su: No module specific data is present
Nov 16 08:05:58.623 INFO running `"docker" "inspect" "8ffb8989e5fc084e933514f9e0af8216717f68aab2c537c11b02bea9a28788d8"`
Nov 16 08:05:58.881 INFO running `"docker" "rm" "-f" "8ffb8989e5fc084e933514f9e0af8216717f68aab2c537c11b02bea9a28788d8"`
Nov 16 08:05:59.203 INFO [stdout] 8ffb8989e5fc084e933514f9e0af8216717f68aab2c537c11b02bea9a28788d8
Nov 16 08:05:59.205 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-6/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-alt test --frozen --no-run" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 16 08:05:59.684 INFO [stdout] 13094d9bf07bcb21f3332fba91fbeaec693b94cab5ef6fec65ef5bd69019c261
Nov 16 08:05:59.687 INFO running `"docker" "start" "-a" "13094d9bf07bcb21f3332fba91fbeaec693b94cab5ef6fec65ef5bd69019c261"`
Nov 16 08:06:00.760 INFO [stderr] usermod: no changes
Nov 16 08:06:00.797 INFO [stderr]    Compiling LinkedList v0.1.0 (/source)
Nov 16 08:06:01.015 INFO [stderr] warning: unused import: `std::cell::Ref`
Nov 16 08:06:01.015 INFO [stderr]  --> src/lib.rs:7:5
Nov 16 08:06:01.015 INFO [stderr]   |
Nov 16 08:06:01.015 INFO [stderr] 7 | use std::cell::Ref;
Nov 16 08:06:01.015 INFO [stderr]   |     ^^^^^^^^^^^^^^
Nov 16 08:06:01.015 INFO [stderr]   |
Nov 16 08:06:01.015 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Nov 16 08:06:01.015 INFO [stderr] 
Nov 16 08:06:01.015 INFO [stderr] warning: unused import: `std::convert`
Nov 16 08:06:01.015 INFO [stderr]  --> src/lib.rs:8:5
Nov 16 08:06:01.015 INFO [stderr]   |
Nov 16 08:06:01.015 INFO [stderr] 8 | use std::convert;
Nov 16 08:06:01.015 INFO [stderr]   |     ^^^^^^^^^^^^
Nov 16 08:06:01.015 INFO [stderr] 
Nov 16 08:06:01.055 INFO [stderr] warning: function is never used: `test2`
Nov 16 08:06:01.055 INFO [stderr]   --> src/main.rs:68:1
Nov 16 08:06:01.055 INFO [stderr]    |
Nov 16 08:06:01.055 INFO [stderr] 68 | fn test2()
Nov 16 08:06:01.055 INFO [stderr]    | ^^^^^^^^^^
Nov 16 08:06:01.055 INFO [stderr]    |
Nov 16 08:06:01.055 INFO [stderr]    = note: #[warn(dead_code)] on by default
Nov 16 08:06:01.055 INFO [stderr] 
Nov 16 08:06:01.055 INFO [stderr] warning: function is never used: `test3`
Nov 16 08:06:01.055 INFO [stderr]   --> src/main.rs:75:1
Nov 16 08:06:01.055 INFO [stderr]    |
Nov 16 08:06:01.055 INFO [stderr] 75 | fn test3()
Nov 16 08:06:01.055 INFO [stderr]    | ^^^^^^^^^^
Nov 16 08:06:01.055 INFO [stderr] 
Nov 16 08:06:01.055 INFO [stderr] warning: crate `LinkedList` should have a snake case name such as `linked_list`
Nov 16 08:06:01.055 INFO [stderr]   |
Nov 16 08:06:01.055 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Nov 16 08:06:01.059 INFO [stderr] 
Nov 16 08:06:01.199 INFO [stderr] warning: unused variable: `i`
Nov 16 08:06:01.199 INFO [stderr]   --> src/lib.rs:59:13
Nov 16 08:06:01.199 INFO [stderr]    |
Nov 16 08:06:01.199 INFO [stderr] 59 |         for i in 0..index {
Nov 16 08:06:01.199 INFO [stderr]    |             ^ help: consider using `_i` instead
Nov 16 08:06:01.231 INFO [stderr]    |
Nov 16 08:06:01.231 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Nov 16 08:06:01.231 INFO [stderr] 
Nov 16 08:06:01.231 INFO [stderr] warning: unused variable: `i`
Nov 16 08:06:01.231 INFO [stderr]    --> src/lib.rs:147:17
Nov 16 08:06:01.231 INFO [stderr]     |
Nov 16 08:06:01.231 INFO [stderr] 147 |             for i in 0..(index - 1) {
Nov 16 08:06:01.231 INFO [stderr]     |                 ^ help: consider using `_i` instead
Nov 16 08:06:01.231 INFO [stderr] 
Nov 16 08:06:01.239 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:06:01.239 INFO [stderr]   --> src/lib.rs:84:13
Nov 16 08:06:01.239 INFO [stderr]    |
Nov 16 08:06:01.239 INFO [stderr] 84 |         let mut c: *mut Node<T>;
Nov 16 08:06:01.239 INFO [stderr]    |             ----^
Nov 16 08:06:01.239 INFO [stderr]    |             |
Nov 16 08:06:01.239 INFO [stderr]    |             help: remove this `mut`
Nov 16 08:06:01.239 INFO [stderr]    |
Nov 16 08:06:01.239 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 16 08:06:01.239 INFO [stderr] 
Nov 16 08:06:01.239 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:06:01.239 INFO [stderr]   --> src/lib.rs:85:13
Nov 16 08:06:01.239 INFO [stderr]    |
Nov 16 08:06:01.239 INFO [stderr] 85 |         let mut a: *mut Option<Rc<RefCell<Node<T>>>>;
Nov 16 08:06:01.239 INFO [stderr]    |             ----^
Nov 16 08:06:01.239 INFO [stderr]    |             |
Nov 16 08:06:01.239 INFO [stderr]    |             help: remove this `mut`
Nov 16 08:06:01.239 INFO [stderr] 
Nov 16 08:06:01.243 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:06:01.243 INFO [stderr]    --> src/lib.rs:101:13
Nov 16 08:06:01.243 INFO [stderr]     |
Nov 16 08:06:01.243 INFO [stderr] 101 |         let mut a: *mut Option<Rc<RefCell<Node<T>>>>;
Nov 16 08:06:01.243 INFO [stderr]     |             ----^
Nov 16 08:06:01.243 INFO [stderr]     |             |
Nov 16 08:06:01.243 INFO [stderr]     |             help: remove this `mut`
Nov 16 08:06:01.243 INFO [stderr] 
Nov 16 08:06:01.243 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:06:01.243 INFO [stderr]    --> src/lib.rs:102:13
Nov 16 08:06:01.243 INFO [stderr]     |
Nov 16 08:06:01.243 INFO [stderr] 102 |         let mut b: *mut T;
Nov 16 08:06:01.243 INFO [stderr]     |             ----^
Nov 16 08:06:01.244 INFO [stderr]     |             |
Nov 16 08:06:01.244 INFO [stderr]     |             help: remove this `mut`
Nov 16 08:06:01.244 INFO [stderr] 
Nov 16 08:06:01.244 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:06:01.244 INFO [stderr]    --> src/lib.rs:122:13
Nov 16 08:06:01.244 INFO [stderr]     |
Nov 16 08:06:01.244 INFO [stderr] 122 |         let mut last: *mut Node<T>;
Nov 16 08:06:01.244 INFO [stderr]     |             ----^^^^
Nov 16 08:06:01.244 INFO [stderr]     |             |
Nov 16 08:06:01.244 INFO [stderr]     |             help: remove this `mut`
Nov 16 08:06:01.251 INFO [stderr] 
Nov 16 08:06:01.251 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:06:01.251 INFO [stderr]    --> src/lib.rs:123:13
Nov 16 08:06:01.251 INFO [stderr]     |
Nov 16 08:06:01.251 INFO [stderr] 123 |         let mut mid: Rc<RefCell<Node<T>>>;
Nov 16 08:06:01.251 INFO [stderr]     |             ----^^^
Nov 16 08:06:01.251 INFO [stderr]     |             |
Nov 16 08:06:01.251 INFO [stderr]     |             help: remove this `mut`
Nov 16 08:06:01.251 INFO [stderr] 
Nov 16 08:06:01.251 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:06:01.251 INFO [stderr]    --> src/lib.rs:124:13
Nov 16 08:06:01.251 INFO [stderr]     |
Nov 16 08:06:01.251 INFO [stderr] 124 |         let mut next: Rc<RefCell<Node<T>>>;
Nov 16 08:06:01.251 INFO [stderr]     |             ----^^^^
Nov 16 08:06:01.252 INFO [stderr]     |             |
Nov 16 08:06:01.252 INFO [stderr]     |             help: remove this `mut`
Nov 16 08:06:01.252 INFO [stderr] 
Nov 16 08:06:01.267 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:06:01.267 INFO [stderr]    --> src/lib.rs:216:13
Nov 16 08:06:01.267 INFO [stderr]     |
Nov 16 08:06:01.267 INFO [stderr] 216 |         let mut a : &'a Rc<RefCell<Node<T>>>;
Nov 16 08:06:01.267 INFO [stderr]     |             ----^
Nov 16 08:06:01.267 INFO [stderr]     |             |
Nov 16 08:06:01.267 INFO [stderr]     |             help: remove this `mut`
Nov 16 08:06:01.267 INFO [stderr] 
Nov 16 08:06:01.267 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:06:01.268 INFO [stderr]    --> src/lib.rs:217:13
Nov 16 08:06:01.268 INFO [stderr]     |
Nov 16 08:06:01.268 INFO [stderr] 217 |         let mut b :  RefMut<Node<T>>;
Nov 16 08:06:01.268 INFO [stderr]     |             ----^
Nov 16 08:06:01.268 INFO [stderr]     |             |
Nov 16 08:06:01.268 INFO [stderr]     |             help: remove this `mut`
Nov 16 08:06:01.268 INFO [stderr] 
Nov 16 08:06:01.268 INFO [stderr] warning: variable does not need to be mutable
Nov 16 08:06:01.268 INFO [stderr]    --> src/lib.rs:218:13
Nov 16 08:06:01.268 INFO [stderr]     |
Nov 16 08:06:01.268 INFO [stderr] 218 |         let mut c : * mut T;
Nov 16 08:06:01.268 INFO [stderr]     |             ----^
Nov 16 08:06:01.268 INFO [stderr]     |             |
Nov 16 08:06:01.268 INFO [stderr]     |             help: remove this `mut`
Nov 16 08:06:01.268 INFO [stderr] 
Nov 16 08:06:01.268 INFO [stderr] warning: crate `LinkedList` should have a snake case name such as `linked_list`
Nov 16 08:06:01.268 INFO [stderr]   |
Nov 16 08:06:01.268 INFO [stderr]   = note: #[warn(non_snake_case)] on by default
Nov 16 08:06:01.268 INFO [stderr] 
Nov 16 08:06:01.268 INFO [stderr] warning: structure field `phantomData` should have a snake case name such as `phantom_data`
Nov 16 08:06:01.268 INFO [stderr]   --> src/lib.rs:17:5
Nov 16 08:06:01.268 INFO [stderr]    |
Nov 16 08:06:01.268 INFO [stderr] 17 |     phantomData : PhantomData<&'a T>
Nov 16 08:06:01.269 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 16 08:06:01.269 INFO [stderr] 
Nov 16 08:06:01.269 INFO [stderr] warning: method `getSize` should have a snake case name such as `get_size`
Nov 16 08:06:01.269 INFO [stderr]   --> src/lib.rs:76:5
Nov 16 08:06:01.269 INFO [stderr]    |
Nov 16 08:06:01.269 INFO [stderr] 76 | /     pub fn getSize(&self) -> u32 {
Nov 16 08:06:01.269 INFO [stderr] 77 | |         self.size
Nov 16 08:06:01.269 INFO [stderr] 78 | |     }
Nov 16 08:06:01.269 INFO [stderr]    | |_____^
Nov 16 08:06:01.269 INFO [stderr] 
Nov 16 08:06:01.269 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 08:06:01.269 INFO [stderr]    --> src/lib.rs:188:13
Nov 16 08:06:01.269 INFO [stderr]     |
Nov 16 08:06:01.269 INFO [stderr] 188 |             write!(f, "[ ");
Nov 16 08:06:01.269 INFO [stderr]     |             ^^^^^^^^^^^^^^^^
Nov 16 08:06:01.269 INFO [stderr]     |
Nov 16 08:06:01.269 INFO [stderr]     = note: #[warn(unused_must_use)] on by default
Nov 16 08:06:01.269 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 08:06:01.269 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 16 08:06:01.269 INFO [stderr] 
Nov 16 08:06:01.269 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 08:06:01.269 INFO [stderr]    --> src/lib.rs:194:29
Nov 16 08:06:01.269 INFO [stderr]     |
Nov 16 08:06:01.269 INFO [stderr] 194 |                             write!(f, "{}", *b);
Nov 16 08:06:01.270 INFO [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^
Nov 16 08:06:01.270 INFO [stderr]     |
Nov 16 08:06:01.270 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 08:06:01.270 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 16 08:06:01.270 INFO [stderr] 
Nov 16 08:06:01.270 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 08:06:01.270 INFO [stderr]    --> src/lib.rs:196:29
Nov 16 08:06:01.270 INFO [stderr]     |
Nov 16 08:06:01.270 INFO [stderr] 196 |                             write!(f, "{},", *b);
Nov 16 08:06:01.270 INFO [stderr]     |                             ^^^^^^^^^^^^^^^^^^^^^
Nov 16 08:06:01.270 INFO [stderr]     |
Nov 16 08:06:01.270 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 08:06:01.270 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 16 08:06:01.270 INFO [stderr] 
Nov 16 08:06:01.270 INFO [stderr] warning: unused `std::result::Result` that must be used
Nov 16 08:06:01.270 INFO [stderr]    --> src/lib.rs:201:25
Nov 16 08:06:01.270 INFO [stderr]     |
Nov 16 08:06:01.270 INFO [stderr] 201 |                         write!(f, " ]");
Nov 16 08:06:01.270 INFO [stderr]     |                         ^^^^^^^^^^^^^^^^
Nov 16 08:06:01.270 INFO [stderr]     |
Nov 16 08:06:01.270 INFO [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
Nov 16 08:06:01.271 INFO [stderr]     = note: this error originates in a macro outside of the current crate (in Nightly builds, run with -Z external-macro-backtrace for more info)
Nov 16 08:06:01.271 INFO [stderr] 
Nov 16 08:06:01.576 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.80s
Nov 16 08:06:01.579 INFO [stderr] su: No module specific data is present
Nov 16 08:06:02.237 INFO running `"docker" "inspect" "13094d9bf07bcb21f3332fba91fbeaec693b94cab5ef6fec65ef5bd69019c261"`
Nov 16 08:06:02.475 INFO running `"docker" "rm" "-f" "13094d9bf07bcb21f3332fba91fbeaec693b94cab5ef6fec65ef5bd69019c261"`
Nov 16 08:06:02.839 INFO [stdout] 13094d9bf07bcb21f3332fba91fbeaec693b94cab5ef6fec65ef5bd69019c261
Nov 16 08:06:02.845 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-55982/worker-6/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-6/pr-55982/master#6b9b97bd9b704f85f0184f7a213cc4d62bd9654c:/source:ro,Z" "-v" "/mnt/big/crater/work/local/cargo-home:/cargo-home:ro,Z" "-v" "/mnt/big/crater/work/local/rustup-home:/rustup-home:ro,Z" "-e" "USER_ID=1000" "-e" "SOURCE_DIR=/source" "-e" "USER_ID=1000" "-e" "CMD=cargo +6b9b97bd9b704f85f0184f7a213cc4d62bd9654c-alt test --frozen" "-e" "CARGO_TARGET_DIR=/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "-e" "CARGO_HOME=/cargo-home" "-e" "RUSTUP_HOME=/rustup-home" "-m" "1536M" "--network" "none" "crater"`
Nov 16 08:06:03.348 INFO [stdout] e2fe73bf13e9fb8a9634128cfecfd88e3532fab986709e56bf15ae6edb7c94fc
Nov 16 08:06:03.350 INFO running `"docker" "start" "-a" "e2fe73bf13e9fb8a9634128cfecfd88e3532fab986709e56bf15ae6edb7c94fc"`
Nov 16 08:06:04.867 INFO [stderr] usermod: no changes
Nov 16 08:06:04.921 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.02s
Nov 16 08:06:04.923 INFO [stderr]      Running /target/debug/deps/LinkedList-9df78fba21043690
Nov 16 08:06:04.927 INFO [stdout] 
Nov 16 08:06:04.927 INFO [stdout] running 0 tests
Nov 16 08:06:04.927 INFO [stdout] 
Nov 16 08:06:04.927 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 16 08:06:04.927 INFO [stdout] 
Nov 16 08:06:04.927 INFO [stderr]      Running /target/debug/deps/LinkedList-d4f532266323ddf8
Nov 16 08:06:04.959 INFO [stdout] 
Nov 16 08:06:04.959 INFO [stdout] running 0 tests
Nov 16 08:06:04.959 INFO [stdout] 
Nov 16 08:06:04.959 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 16 08:06:04.959 INFO [stdout] 
Nov 16 08:06:04.959 INFO [stderr]    Doc-tests LinkedList
Nov 16 08:06:05.107 INFO [stdout] 
Nov 16 08:06:05.107 INFO [stdout] running 0 tests
Nov 16 08:06:05.107 INFO [stdout] 
Nov 16 08:06:05.107 INFO [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
Nov 16 08:06:05.107 INFO [stdout] 
Nov 16 08:06:05.111 INFO [stderr] su: No module specific data is present
Nov 16 08:06:05.851 INFO running `"docker" "inspect" "e2fe73bf13e9fb8a9634128cfecfd88e3532fab986709e56bf15ae6edb7c94fc"`
Nov 16 08:06:06.199 INFO running `"docker" "rm" "-f" "e2fe73bf13e9fb8a9634128cfecfd88e3532fab986709e56bf15ae6edb7c94fc"`
Nov 16 08:06:06.483 INFO [stdout] e2fe73bf13e9fb8a9634128cfecfd88e3532fab986709e56bf15ae6edb7c94fc