Dec 12 11:54:51.293 INFO checking little-0.3.0 against master#3a75e80557a103497cffbcab395a2f37061a77ea for pr-56677
Dec 12 11:54:51.293 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-56677/worker-5/master#3a75e80557a103497cffbcab395a2f37061a77ea:/target:rw,Z" "-v" "/mnt/big/crater/work/local/test-source/worker-5/pr-56677/master#3a75e80557a103497cffbcab395a2f37061a77ea:/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 +3a75e80557a103497cffbcab395a2f37061a77ea-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"`
Dec 12 11:54:51.654 INFO [stdout] 642ce9bbf2bbe5f4c85dfbb7ad7eab9d001de54dc994677543f59c2b314bf53f
Dec 12 11:54:51.660 INFO running `"docker" "start" "-a" "642ce9bbf2bbe5f4c85dfbb7ad7eab9d001de54dc994677543f59c2b314bf53f"`
Dec 12 11:54:52.808 INFO [stderr] usermod: no changes
Dec 12 11:54:52.928 INFO [stderr]     Checking little v0.3.0 (/source)
Dec 12 11:54:54.064 INFO [stderr] warning: unused import: `BuildError`
Dec 12 11:54:54.064 INFO [stderr]  --> src/compiler.rs:9:5
Dec 12 11:54:54.064 INFO [stderr]   |
Dec 12 11:54:54.064 INFO [stderr] 9 |     BuildError,
Dec 12 11:54:54.064 INFO [stderr]   |     ^^^^^^^^^^
Dec 12 11:54:54.064 INFO [stderr]   |
Dec 12 11:54:54.064 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 11:54:54.064 INFO [stderr] 
Dec 12 11:54:54.175 INFO [stderr] warning: unused import: `BuildError`
Dec 12 11:54:54.175 INFO [stderr]  --> src/compiler.rs:9:5
Dec 12 11:54:54.175 INFO [stderr]   |
Dec 12 11:54:54.175 INFO [stderr] 9 |     BuildError,
Dec 12 11:54:54.175 INFO [stderr]   |     ^^^^^^^^^^
Dec 12 11:54:54.175 INFO [stderr]   |
Dec 12 11:54:54.175 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 11:54:54.176 INFO [stderr] 
Dec 12 11:54:54.435 INFO [stderr] warning: unused import: `Write`
Dec 12 11:54:54.435 INFO [stderr]   --> src/lib.rs:14:22
Dec 12 11:54:54.435 INFO [stderr]    |
Dec 12 11:54:54.436 INFO [stderr] 14 | use std::io::{ self, Write };
Dec 12 11:54:54.436 INFO [stderr]    |                      ^^^^^
Dec 12 11:54:54.436 INFO [stderr] 
Dec 12 11:54:54.436 INFO [stderr] warning: unused import: `Read`
Dec 12 11:54:54.437 INFO [stderr]  --> src/interpreter.rs:4:16
Dec 12 11:54:54.437 INFO [stderr]   |
Dec 12 11:54:54.437 INFO [stderr] 4 | use std::io::{ Read, Write };
Dec 12 11:54:54.437 INFO [stderr]   |                ^^^^
Dec 12 11:54:54.438 INFO [stderr] 
Dec 12 11:54:54.459 INFO [stderr] warning: unused variable: `id`
Dec 12 11:54:54.459 INFO [stderr]   --> src/interpreter.rs:64:27
Dec 12 11:54:54.460 INFO [stderr]    |
Dec 12 11:54:54.460 INFO [stderr] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 12 11:54:54.460 INFO [stderr]    |                           ^^ help: consider using `_id` instead
Dec 12 11:54:54.472 INFO [stderr]    |
Dec 12 11:54:54.472 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 11:54:54.472 INFO [stderr] 
Dec 12 11:54:54.472 INFO [stderr] warning: unused variable: `env`
Dec 12 11:54:54.472 INFO [stderr]   --> src/interpreter.rs:64:37
Dec 12 11:54:54.472 INFO [stderr]    |
Dec 12 11:54:54.473 INFO [stderr] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 12 11:54:54.473 INFO [stderr]    |                                     ^^^ help: consider using `_env` instead
Dec 12 11:54:54.473 INFO [stderr] 
Dec 12 11:54:54.473 INFO [stderr] warning: unused variable: `calls`
Dec 12 11:54:54.473 INFO [stderr]   --> src/interpreter.rs:64:55
Dec 12 11:54:54.473 INFO [stderr]    |
Dec 12 11:54:54.473 INFO [stderr] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 12 11:54:54.473 INFO [stderr]    |                                                       ^^^^^ help: consider using `_calls` instead
Dec 12 11:54:54.473 INFO [stderr] 
Dec 12 11:54:54.473 INFO [stderr] warning: unused variable: `name`
Dec 12 11:54:54.473 INFO [stderr]    --> src/interpreter.rs:136:49
Dec 12 11:54:54.473 INFO [stderr]     |
Dec 12 11:54:54.473 INFO [stderr] 136 |                     Instruction::Property { mut name } => {
Dec 12 11:54:54.473 INFO [stderr]     |                                                 ^^^^ help: try ignoring the field: `name: _`
Dec 12 11:54:54.473 INFO [stderr] 
Dec 12 11:54:54.473 INFO [stderr] warning: unused variable: `name`
Dec 12 11:54:54.473 INFO [stderr]    --> src/interpreter.rs:267:30
Dec 12 11:54:54.473 INFO [stderr]     |
Dec 12 11:54:54.473 INFO [stderr] 267 |             Mem::Parameter { name } => {
Dec 12 11:54:54.473 INFO [stderr]     |                              ^^^^ help: try ignoring the field: `name: _`
Dec 12 11:54:54.473 INFO [stderr] 
Dec 12 11:54:54.473 INFO [stderr] warning: unused variable: `id`
Dec 12 11:54:54.473 INFO [stderr]   --> src/compiler.rs:36:27
Dec 12 11:54:54.473 INFO [stderr]    |
Dec 12 11:54:54.473 INFO [stderr] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 12 11:54:54.473 INFO [stderr]    |                           ^^ help: consider using `_id` instead
Dec 12 11:54:54.473 INFO [stderr] 
Dec 12 11:54:54.473 INFO [stderr] warning: unused variable: `env`
Dec 12 11:54:54.473 INFO [stderr]   --> src/compiler.rs:36:37
Dec 12 11:54:54.473 INFO [stderr]    |
Dec 12 11:54:54.473 INFO [stderr] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 12 11:54:54.473 INFO [stderr]    |                                     ^^^ help: consider using `_env` instead
Dec 12 11:54:54.473 INFO [stderr] 
Dec 12 11:54:54.473 INFO [stderr] warning: unused variable: `calls`
Dec 12 11:54:54.473 INFO [stderr]   --> src/compiler.rs:36:55
Dec 12 11:54:54.473 INFO [stderr]    |
Dec 12 11:54:54.473 INFO [stderr] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 12 11:54:54.473 INFO [stderr]    |                                                       ^^^^^ help: consider using `_calls` instead
Dec 12 11:54:54.473 INFO [stderr] 
Dec 12 11:54:54.473 INFO [stderr] warning: unused variable: `buf`
Dec 12 11:54:54.473 INFO [stderr]   --> src/compiler.rs:68:24
Dec 12 11:54:54.473 INFO [stderr]    |
Dec 12 11:54:54.473 INFO [stderr] 68 |     fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
Dec 12 11:54:54.473 INFO [stderr]    |                        ^^^ help: consider using `_buf` instead
Dec 12 11:54:54.473 INFO [stderr] 
Dec 12 11:54:54.473 INFO [stderr] warning: unused variable: `input`
Dec 12 11:54:54.473 INFO [stderr]   --> src/compiler.rs:80:29
Dec 12 11:54:54.473 INFO [stderr]    |
Dec 12 11:54:54.473 INFO [stderr] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
Dec 12 11:54:54.473 INFO [stderr]    |                             ^^^^^ help: consider using `_input` instead
Dec 12 11:54:54.473 INFO [stderr] 
Dec 12 11:54:54.473 INFO [stderr] warning: unused variable: `output`
Dec 12 11:54:54.473 INFO [stderr]   --> src/compiler.rs:80:44
Dec 12 11:54:54.473 INFO [stderr]    |
Dec 12 11:54:54.473 INFO [stderr] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
Dec 12 11:54:54.473 INFO [stderr]    |                                            ^^^^^^ help: consider using `_output` instead
Dec 12 11:54:54.473 INFO [stderr] 
Dec 12 11:54:54.496 INFO [stderr] warning: unused import: `Write`
Dec 12 11:54:54.496 INFO [stderr]   --> src/lib.rs:14:22
Dec 12 11:54:54.496 INFO [stderr]    |
Dec 12 11:54:54.496 INFO [stderr] 14 | use std::io::{ self, Write };
Dec 12 11:54:54.496 INFO [stderr]    |                      ^^^^^
Dec 12 11:54:54.496 INFO [stderr] 
Dec 12 11:54:54.496 INFO [stderr] warning: unused import: `Read`
Dec 12 11:54:54.496 INFO [stderr]  --> src/interpreter.rs:4:16
Dec 12 11:54:54.496 INFO [stderr]   |
Dec 12 11:54:54.496 INFO [stderr] 4 | use std::io::{ Read, Write };
Dec 12 11:54:54.496 INFO [stderr]   |                ^^^^
Dec 12 11:54:54.496 INFO [stderr] 
Dec 12 11:54:54.540 INFO [stderr] warning: unused variable: `id`
Dec 12 11:54:54.540 INFO [stderr]   --> src/interpreter.rs:64:27
Dec 12 11:54:54.540 INFO [stderr]    |
Dec 12 11:54:54.540 INFO [stderr] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 12 11:54:54.540 INFO [stderr]    |                           ^^ help: consider using `_id` instead
Dec 12 11:54:54.540 INFO [stderr]    |
Dec 12 11:54:54.541 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 12 11:54:54.541 INFO [stderr] 
Dec 12 11:54:54.541 INFO [stderr] warning: unused variable: `env`
Dec 12 11:54:54.541 INFO [stderr]   --> src/interpreter.rs:64:37
Dec 12 11:54:54.541 INFO [stderr]    |
Dec 12 11:54:54.541 INFO [stderr] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 12 11:54:54.541 INFO [stderr]    |                                     ^^^ help: consider using `_env` instead
Dec 12 11:54:54.541 INFO [stderr] 
Dec 12 11:54:54.541 INFO [stderr] warning: unused variable: `calls`
Dec 12 11:54:54.541 INFO [stderr]   --> src/interpreter.rs:64:55
Dec 12 11:54:54.541 INFO [stderr]    |
Dec 12 11:54:54.541 INFO [stderr] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 12 11:54:54.541 INFO [stderr]    |                                                       ^^^^^ help: consider using `_calls` instead
Dec 12 11:54:54.541 INFO [stderr] 
Dec 12 11:54:54.541 INFO [stderr] warning: unused variable: `name`
Dec 12 11:54:54.541 INFO [stderr]    --> src/interpreter.rs:136:49
Dec 12 11:54:54.541 INFO [stderr]     |
Dec 12 11:54:54.541 INFO [stderr] 136 |                     Instruction::Property { mut name } => {
Dec 12 11:54:54.541 INFO [stderr]     |                                                 ^^^^ help: try ignoring the field: `name: _`
Dec 12 11:54:54.541 INFO [stderr] 
Dec 12 11:54:54.541 INFO [stderr] warning: unused variable: `name`
Dec 12 11:54:54.541 INFO [stderr]    --> src/interpreter.rs:267:30
Dec 12 11:54:54.541 INFO [stderr]     |
Dec 12 11:54:54.541 INFO [stderr] 267 |             Mem::Parameter { name } => {
Dec 12 11:54:54.541 INFO [stderr]     |                              ^^^^ help: try ignoring the field: `name: _`
Dec 12 11:54:54.541 INFO [stderr] 
Dec 12 11:54:54.541 INFO [stderr] warning: unused variable: `id`
Dec 12 11:54:54.542 INFO [stderr]   --> src/compiler.rs:36:27
Dec 12 11:54:54.542 INFO [stderr]    |
Dec 12 11:54:54.542 INFO [stderr] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 12 11:54:54.542 INFO [stderr]    |                           ^^ help: consider using `_id` instead
Dec 12 11:54:54.542 INFO [stderr] 
Dec 12 11:54:54.542 INFO [stderr] warning: unused variable: `env`
Dec 12 11:54:54.542 INFO [stderr]   --> src/compiler.rs:36:37
Dec 12 11:54:54.542 INFO [stderr]    |
Dec 12 11:54:54.542 INFO [stderr] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 12 11:54:54.542 INFO [stderr]    |                                     ^^^ help: consider using `_env` instead
Dec 12 11:54:54.542 INFO [stderr] 
Dec 12 11:54:54.542 INFO [stderr] warning: unused variable: `calls`
Dec 12 11:54:54.542 INFO [stderr]   --> src/compiler.rs:36:55
Dec 12 11:54:54.542 INFO [stderr]    |
Dec 12 11:54:54.542 INFO [stderr] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 12 11:54:54.542 INFO [stderr]    |                                                       ^^^^^ help: consider using `_calls` instead
Dec 12 11:54:54.542 INFO [stderr] 
Dec 12 11:54:54.542 INFO [stderr] warning: unused variable: `buf`
Dec 12 11:54:54.542 INFO [stderr]   --> src/compiler.rs:68:24
Dec 12 11:54:54.542 INFO [stderr]    |
Dec 12 11:54:54.542 INFO [stderr] 68 |     fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
Dec 12 11:54:54.542 INFO [stderr]    |                        ^^^ help: consider using `_buf` instead
Dec 12 11:54:54.542 INFO [stderr] 
Dec 12 11:54:54.542 INFO [stderr] warning: unused variable: `input`
Dec 12 11:54:54.542 INFO [stderr]   --> src/compiler.rs:80:29
Dec 12 11:54:54.542 INFO [stderr]    |
Dec 12 11:54:54.542 INFO [stderr] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
Dec 12 11:54:54.542 INFO [stderr]    |                             ^^^^^ help: consider using `_input` instead
Dec 12 11:54:54.542 INFO [stderr] 
Dec 12 11:54:54.542 INFO [stderr] warning: unused variable: `output`
Dec 12 11:54:54.542 INFO [stderr]   --> src/compiler.rs:80:44
Dec 12 11:54:54.542 INFO [stderr]    |
Dec 12 11:54:54.542 INFO [stderr] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
Dec 12 11:54:54.542 INFO [stderr]    |                                            ^^^^^^ help: consider using `_output` instead
Dec 12 11:54:54.542 INFO [stderr] 
Dec 12 11:54:54.591 INFO [stderr] warning: struct is never constructed: `template_ooo`
Dec 12 11:54:54.591 INFO [stderr]   --> src/compiler.rs:77:5
Dec 12 11:54:54.591 INFO [stderr]    |
Dec 12 11:54:54.591 INFO [stderr] 77 |     pub struct template_ooo;
Dec 12 11:54:54.591 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 11:54:54.591 INFO [stderr]    |
Dec 12 11:54:54.591 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 11:54:54.591 INFO [stderr] 
Dec 12 11:54:54.591 INFO [stderr] warning: method is never used: `output`
Dec 12 11:54:54.591 INFO [stderr]   --> src/compiler.rs:80:9
Dec 12 11:54:54.591 INFO [stderr]    |
Dec 12 11:54:54.591 INFO [stderr] 80 | /         pub fn output<I, O>(input: &mut I, output: &mut O)
Dec 12 11:54:54.591 INFO [stderr] 81 | |             -> Result<usize, io::Error>
Dec 12 11:54:54.591 INFO [stderr] 82 | |         where
Dec 12 11:54:54.591 INFO [stderr] 83 | |             I: io::Read + io::Seek, O: io::Write
Dec 12 11:54:54.592 INFO [stderr] ...  |
Dec 12 11:54:54.592 INFO [stderr] 86 | |             Ok(0)
Dec 12 11:54:54.592 INFO [stderr] 87 | |         }
Dec 12 11:54:54.592 INFO [stderr]    | |_________^
Dec 12 11:54:54.592 INFO [stderr] 
Dec 12 11:54:54.637 INFO [stderr] warning: struct is never constructed: `template_ooo`
Dec 12 11:54:54.637 INFO [stderr]   --> src/compiler.rs:77:5
Dec 12 11:54:54.637 INFO [stderr]    |
Dec 12 11:54:54.637 INFO [stderr] 77 |     pub struct template_ooo;
Dec 12 11:54:54.637 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 12 11:54:54.637 INFO [stderr]    |
Dec 12 11:54:54.637 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 11:54:54.637 INFO [stderr] 
Dec 12 11:54:54.637 INFO [stderr] warning: method is never used: `output`
Dec 12 11:54:54.637 INFO [stderr]   --> src/compiler.rs:80:9
Dec 12 11:54:54.637 INFO [stderr]    |
Dec 12 11:54:54.637 INFO [stderr] 80 | /         pub fn output<I, O>(input: &mut I, output: &mut O)
Dec 12 11:54:54.637 INFO [stderr] 81 | |             -> Result<usize, io::Error>
Dec 12 11:54:54.637 INFO [stderr] 82 | |         where
Dec 12 11:54:54.637 INFO [stderr] 83 | |             I: io::Read + io::Seek, O: io::Write
Dec 12 11:54:54.637 INFO [stderr] ...  |
Dec 12 11:54:54.637 INFO [stderr] 86 | |             Ok(0)
Dec 12 11:54:54.637 INFO [stderr] 87 | |         }
Dec 12 11:54:54.637 INFO [stderr]    | |_________^
Dec 12 11:54:54.637 INFO [stderr] 
Dec 12 11:54:55.820 INFO [stderr] warning: unused import: `Write`
Dec 12 11:54:55.820 INFO [stderr]  --> examples/hello_world.rs:4:22
Dec 12 11:54:55.820 INFO [stderr]   |
Dec 12 11:54:55.820 INFO [stderr] 4 | use std::io::{ Read, Write };
Dec 12 11:54:55.820 INFO [stderr]   |                      ^^^^^
Dec 12 11:54:55.820 INFO [stderr]   |
Dec 12 11:54:55.820 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 11:54:55.820 INFO [stderr] 
Dec 12 11:54:56.676 INFO [stderr] warning: unused `#[macro_use]` import
Dec 12 11:54:56.676 INFO [stderr]  --> tests/compiler.rs:2:1
Dec 12 11:54:56.676 INFO [stderr]   |
Dec 12 11:54:56.676 INFO [stderr] 2 | #[macro_use] extern crate log;
Dec 12 11:54:56.676 INFO [stderr]   | ^^^^^^^^^^^^
Dec 12 11:54:56.676 INFO [stderr]   |
Dec 12 11:54:56.676 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 12 11:54:56.676 INFO [stderr] 
Dec 12 11:54:56.800 INFO [stderr] warning: function is never used: `output_param`
Dec 12 11:54:56.800 INFO [stderr]   --> tests/compiler.rs:16:1
Dec 12 11:54:56.800 INFO [stderr]    |
Dec 12 11:54:56.800 INFO [stderr] 16 | fn output_param() {
Dec 12 11:54:56.800 INFO [stderr]    | ^^^^^^^^^^^^^^^^^
Dec 12 11:54:56.800 INFO [stderr]    |
Dec 12 11:54:56.800 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 12 11:54:56.800 INFO [stderr] 
Dec 12 11:54:56.836 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 4.01s
Dec 12 11:54:56.841 INFO [stderr] su: No module specific data is present
Dec 12 11:54:57.338 INFO running `"docker" "inspect" "642ce9bbf2bbe5f4c85dfbb7ad7eab9d001de54dc994677543f59c2b314bf53f"`
Dec 12 11:54:57.592 INFO running `"docker" "rm" "-f" "642ce9bbf2bbe5f4c85dfbb7ad7eab9d001de54dc994677543f59c2b314bf53f"`
Dec 12 11:54:57.781 INFO [stdout] 642ce9bbf2bbe5f4c85dfbb7ad7eab9d001de54dc994677543f59c2b314bf53f