Nov 28 10:31:16.259 INFO checking Virepri/synacor_challenge against try#db42d4dad33013eba11ef37342ad9f614e5652b8 for pr-56074
Nov 28 10:31:16.260 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56074/worker-4/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-4/pr-56074/try#db42d4dad33013eba11ef37342ad9f614e5652b8:/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 +db42d4dad33013eba11ef37342ad9f614e5652b8-alt check --frozen --all --all-targets" "-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 28 10:31:16.756 INFO [stdout] 62a55da43a549da900948f897fb39dc39c5934b93fdfcbc1edf40317f7db639f
Nov 28 10:31:16.759 INFO running `"docker" "start" "-a" "62a55da43a549da900948f897fb39dc39c5934b93fdfcbc1edf40317f7db639f"`
Nov 28 10:31:18.679 INFO [stderr] usermod: no changes
Nov 28 10:31:18.752 INFO [stderr]     Checking synacor_challenge v0.1.0 (/source)
Nov 28 10:31:19.936 INFO [stderr] warning: struct is never constructed: `CPU`
Nov 28 10:31:19.937 INFO [stderr]  --> src/cpu/mod.rs:6:1
Nov 28 10:31:19.937 INFO [stderr]   |
Nov 28 10:31:19.937 INFO [stderr] 6 | pub struct CPU {
Nov 28 10:31:19.938 INFO [stderr]   | ^^^^^^^^^^^^^^
Nov 28 10:31:19.960 INFO [stderr]   |
Nov 28 10:31:19.961 INFO [stderr]   = note: #[warn(dead_code)] on by default
Nov 28 10:31:19.961 INFO [stderr] 
Nov 28 10:31:19.961 INFO [stderr] warning: method is never used: `load_program`
Nov 28 10:31:19.962 INFO [stderr]   --> src/cpu/mod.rs:14:5
Nov 28 10:31:19.962 INFO [stderr]    |
Nov 28 10:31:19.962 INFO [stderr] 14 |     pub fn load_program(&mut self, prog: &Vec<u8>) {
Nov 28 10:31:19.962 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 10:31:19.963 INFO [stderr] 
Nov 28 10:31:19.963 INFO [stderr] warning: method is never used: `start_emulation`
Nov 28 10:31:19.963 INFO [stderr]   --> src/cpu/mod.rs:20:5
Nov 28 10:31:19.963 INFO [stderr]    |
Nov 28 10:31:19.963 INFO [stderr] 20 |     pub fn start_emulation(&mut self) {
Nov 28 10:31:19.964 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 10:31:19.964 INFO [stderr] 
Nov 28 10:31:19.964 INFO [stderr] warning: method is never used: `get_from_mem`
Nov 28 10:31:19.965 INFO [stderr]   --> src/cpu/mod.rs:88:5
Nov 28 10:31:19.965 INFO [stderr]    |
Nov 28 10:31:19.965 INFO [stderr] 88 |     fn get_from_mem(&self, loc: usize, num: bool) -> u16 {
Nov 28 10:31:19.965 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 10:31:19.966 INFO [stderr] 
Nov 28 10:31:19.966 INFO [stderr] warning: method is never used: `set_location`
Nov 28 10:31:19.966 INFO [stderr]   --> src/cpu/mod.rs:98:5
Nov 28 10:31:19.966 INFO [stderr]    |
Nov 28 10:31:19.967 INFO [stderr] 98 |     fn set_location(&mut self, loc: usize, data: u16) {
Nov 28 10:31:19.967 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 10:31:19.967 INFO [stderr] 
Nov 28 10:31:19.967 INFO [stderr] warning: function is never used: `is_register`
Nov 28 10:31:19.967 INFO [stderr]    --> src/cpu/mod.rs:108:1
Nov 28 10:31:19.968 INFO [stderr]     |
Nov 28 10:31:19.968 INFO [stderr] 108 | fn is_register(loc: &usize) -> bool {
Nov 28 10:31:19.968 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 10:31:19.968 INFO [stderr] 
Nov 28 10:31:19.969 INFO [stderr] warning: function is never used: `make_cpu`
Nov 28 10:31:19.969 INFO [stderr]    --> src/cpu/mod.rs:112:1
Nov 28 10:31:19.969 INFO [stderr]     |
Nov 28 10:31:19.969 INFO [stderr] 112 | pub fn make_cpu() -> CPU {
Nov 28 10:31:19.970 INFO [stderr]     | ^^^^^^^^^^^^^^^^^^^^^^^^
Nov 28 10:31:19.970 INFO [stderr] 
Nov 28 10:31:19.970 INFO [stderr] warning: variable `Result` should have a snake case name such as `result`
Nov 28 10:31:19.971 INFO [stderr]   --> src/cpu/mod.rs:72:30
Nov 28 10:31:19.971 INFO [stderr]    |
Nov 28 10:31:19.971 INFO [stderr] 72 |                         Some(Result) => {self.memory_pointer = Result as usize}
Nov 28 10:31:19.971 INFO [stderr]    |                              ^^^^^^
Nov 28 10:31:19.972 INFO [stderr]    |
Nov 28 10:31:19.972 INFO [stderr]    = note: #[warn(non_snake_case)] on by default
Nov 28 10:31:19.972 INFO [stderr] 
Nov 28 10:31:20.096 INFO [stderr] warning: variable does not need to be mutable
Nov 28 10:31:20.096 INFO [stderr]   --> src/cpu/tests/mod.rs:47:13
Nov 28 10:31:20.096 INFO [stderr]    |
Nov 28 10:31:20.096 INFO [stderr] 47 |         let mut program = [17,5,2,15,0];
Nov 28 10:31:20.097 INFO [stderr]    |             ----^^^^^^^
Nov 28 10:31:20.097 INFO [stderr]    |             |
Nov 28 10:31:20.097 INFO [stderr]    |             help: remove this `mut`
Nov 28 10:31:20.097 INFO [stderr]    |
Nov 28 10:31:20.097 INFO [stderr]    = note: #[warn(unused_mut)] on by default
Nov 28 10:31:20.097 INFO [stderr] 
Nov 28 10:31:20.107 INFO [stderr] warning: variable `Result` should have a snake case name such as `result`
Nov 28 10:31:20.107 INFO [stderr]   --> src/cpu/mod.rs:72:30
Nov 28 10:31:20.107 INFO [stderr]    |
Nov 28 10:31:20.107 INFO [stderr] 72 |                         Some(Result) => {self.memory_pointer = Result as usize}
Nov 28 10:31:20.107 INFO [stderr]    |                              ^^^^^^
Nov 28 10:31:20.113 INFO [stderr]    |
Nov 28 10:31:20.113 INFO [stderr]    = note: #[warn(non_snake_case)] on by default
Nov 28 10:31:20.113 INFO [stderr] 
Nov 28 10:31:20.160 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.44s
Nov 28 10:31:20.164 INFO [stderr] su: No module specific data is present
Nov 28 10:31:21.100 INFO running `"docker" "inspect" "62a55da43a549da900948f897fb39dc39c5934b93fdfcbc1edf40317f7db639f"`
Nov 28 10:31:21.435 INFO running `"docker" "rm" "-f" "62a55da43a549da900948f897fb39dc39c5934b93fdfcbc1edf40317f7db639f"`
Nov 28 10:31:21.749 INFO [stdout] 62a55da43a549da900948f897fb39dc39c5934b93fdfcbc1edf40317f7db639f