Dec 18 14:19:38.705 INFO checking little-0.3.0 against try#0b8c5828f68d7b2840b81fa51239346dc97fef5a for pr-54252
Dec 18 14:19:38.705 INFO running `"docker" "create" "-v" "/mnt/big/crater/work/local/target-dirs/pr-54252/worker-6/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a:/opt/crater/target:rw,Z" "-v" "/mnt/big/crater/work/ex/pr-54252/sources/try#0b8c5828f68d7b2840b81fa51239346dc97fef5a/reg/little/0.3.0:/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" "+0b8c5828f68d7b2840b81fa51239346dc97fef5a-alt" "check" "--frozen" "--all" "--all-targets"`
Dec 18 14:19:38.940 INFO [stdout] 9b0e6244311fc13639ca5c9d599efaaf6922a78f7326f8f0bf7f9e42e514b090
Dec 18 14:19:38.947 INFO running `"docker" "start" "-a" "9b0e6244311fc13639ca5c9d599efaaf6922a78f7326f8f0bf7f9e42e514b090"`
Dec 18 14:19:40.267 INFO [stderr]     Checking little v0.3.0 (/opt/crater/workdir)
Dec 18 14:19:40.600 INFO [stderr] warning: unused import: `BuildError`
Dec 18 14:19:40.600 INFO [stderr]  --> src/compiler.rs:9:5
Dec 18 14:19:40.600 INFO [stderr]   |
Dec 18 14:19:40.600 INFO [stderr] 9 |     BuildError,
Dec 18 14:19:40.600 INFO [stderr]   |     ^^^^^^^^^^
Dec 18 14:19:40.600 INFO [stderr]   |
Dec 18 14:19:40.600 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 14:19:40.600 INFO [stderr] 
Dec 18 14:19:40.700 INFO [stderr] warning: unused import: `BuildError`
Dec 18 14:19:40.700 INFO [stderr]  --> src/compiler.rs:9:5
Dec 18 14:19:40.700 INFO [stderr]   |
Dec 18 14:19:40.700 INFO [stderr] 9 |     BuildError,
Dec 18 14:19:40.700 INFO [stderr]   |     ^^^^^^^^^^
Dec 18 14:19:40.700 INFO [stderr]   |
Dec 18 14:19:40.700 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 14:19:40.700 INFO [stderr] 
Dec 18 14:19:40.832 INFO [stderr] warning: unused import: `Write`
Dec 18 14:19:40.832 INFO [stderr]   --> src/lib.rs:14:22
Dec 18 14:19:40.832 INFO [stderr]    |
Dec 18 14:19:40.832 INFO [stderr] 14 | use std::io::{ self, Write };
Dec 18 14:19:40.832 INFO [stderr]    |                      ^^^^^
Dec 18 14:19:40.832 INFO [stderr] 
Dec 18 14:19:40.832 INFO [stderr] warning: unused import: `Read`
Dec 18 14:19:40.832 INFO [stderr]  --> src/interpreter.rs:4:16
Dec 18 14:19:40.832 INFO [stderr]   |
Dec 18 14:19:40.832 INFO [stderr] 4 | use std::io::{ Read, Write };
Dec 18 14:19:40.832 INFO [stderr]   |                ^^^^
Dec 18 14:19:40.832 INFO [stderr] 
Dec 18 14:19:40.841 INFO [stderr] warning: unused variable: `id`
Dec 18 14:19:40.841 INFO [stderr]   --> src/interpreter.rs:64:27
Dec 18 14:19:40.841 INFO [stderr]    |
Dec 18 14:19:40.841 INFO [stderr] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 18 14:19:40.841 INFO [stderr]    |                           ^^ help: consider using `_id` instead
Dec 18 14:19:40.841 INFO [stderr]    |
Dec 18 14:19:40.841 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 14:19:40.841 INFO [stderr] 
Dec 18 14:19:40.841 INFO [stderr] warning: unused variable: `env`
Dec 18 14:19:40.841 INFO [stderr]   --> src/interpreter.rs:64:37
Dec 18 14:19:40.841 INFO [stderr]    |
Dec 18 14:19:40.841 INFO [stderr] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 18 14:19:40.841 INFO [stderr]    |                                     ^^^ help: consider using `_env` instead
Dec 18 14:19:40.841 INFO [stderr] 
Dec 18 14:19:40.841 INFO [stderr] warning: unused variable: `calls`
Dec 18 14:19:40.841 INFO [stderr]   --> src/interpreter.rs:64:55
Dec 18 14:19:40.841 INFO [stderr]    |
Dec 18 14:19:40.841 INFO [stderr] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 18 14:19:40.841 INFO [stderr]    |                                                       ^^^^^ help: consider using `_calls` instead
Dec 18 14:19:40.841 INFO [stderr] 
Dec 18 14:19:40.841 INFO [stderr] warning: unused variable: `name`
Dec 18 14:19:40.841 INFO [stderr]    --> src/interpreter.rs:136:49
Dec 18 14:19:40.841 INFO [stderr]     |
Dec 18 14:19:40.841 INFO [stderr] 136 |                     Instruction::Property { mut name } => {
Dec 18 14:19:40.841 INFO [stderr]     |                                                 ^^^^ help: try ignoring the field: `name: _`
Dec 18 14:19:40.841 INFO [stderr] 
Dec 18 14:19:40.841 INFO [stderr] warning: unused variable: `name`
Dec 18 14:19:40.841 INFO [stderr]    --> src/interpreter.rs:267:30
Dec 18 14:19:40.841 INFO [stderr]     |
Dec 18 14:19:40.841 INFO [stderr] 267 |             Mem::Parameter { name } => {
Dec 18 14:19:40.841 INFO [stderr]     |                              ^^^^ help: try ignoring the field: `name: _`
Dec 18 14:19:40.841 INFO [stderr] 
Dec 18 14:19:40.841 INFO [stderr] warning: unused variable: `id`
Dec 18 14:19:40.841 INFO [stderr]   --> src/compiler.rs:36:27
Dec 18 14:19:40.841 INFO [stderr]    |
Dec 18 14:19:40.841 INFO [stderr] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 18 14:19:40.841 INFO [stderr]    |                           ^^ help: consider using `_id` instead
Dec 18 14:19:40.841 INFO [stderr] 
Dec 18 14:19:40.841 INFO [stderr] warning: unused variable: `env`
Dec 18 14:19:40.841 INFO [stderr]   --> src/compiler.rs:36:37
Dec 18 14:19:40.841 INFO [stderr]    |
Dec 18 14:19:40.841 INFO [stderr] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 18 14:19:40.841 INFO [stderr]    |                                     ^^^ help: consider using `_env` instead
Dec 18 14:19:40.841 INFO [stderr] 
Dec 18 14:19:40.841 INFO [stderr] warning: unused variable: `calls`
Dec 18 14:19:40.841 INFO [stderr]   --> src/compiler.rs:36:55
Dec 18 14:19:40.841 INFO [stderr]    |
Dec 18 14:19:40.841 INFO [stderr] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 18 14:19:40.841 INFO [stderr]    |                                                       ^^^^^ help: consider using `_calls` instead
Dec 18 14:19:40.841 INFO [stderr] 
Dec 18 14:19:40.841 INFO [stderr] warning: unused variable: `buf`
Dec 18 14:19:40.841 INFO [stderr]   --> src/compiler.rs:68:24
Dec 18 14:19:40.842 INFO [stderr]    |
Dec 18 14:19:40.842 INFO [stderr] 68 |     fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
Dec 18 14:19:40.842 INFO [stderr]    |                        ^^^ help: consider using `_buf` instead
Dec 18 14:19:40.842 INFO [stderr] 
Dec 18 14:19:40.842 INFO [stderr] warning: unused variable: `input`
Dec 18 14:19:40.842 INFO [stderr]   --> src/compiler.rs:80:29
Dec 18 14:19:40.842 INFO [stderr]    |
Dec 18 14:19:40.842 INFO [stderr] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
Dec 18 14:19:40.842 INFO [stderr]    |                             ^^^^^ help: consider using `_input` instead
Dec 18 14:19:40.842 INFO [stderr] 
Dec 18 14:19:40.842 INFO [stderr] warning: unused variable: `output`
Dec 18 14:19:40.842 INFO [stderr]   --> src/compiler.rs:80:44
Dec 18 14:19:40.842 INFO [stderr]    |
Dec 18 14:19:40.842 INFO [stderr] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
Dec 18 14:19:40.842 INFO [stderr]    |                                            ^^^^^^ help: consider using `_output` instead
Dec 18 14:19:40.842 INFO [stderr] 
Dec 18 14:19:40.942 INFO [stderr] warning: struct is never constructed: `template_ooo`
Dec 18 14:19:40.942 INFO [stderr]   --> src/compiler.rs:77:5
Dec 18 14:19:40.942 INFO [stderr]    |
Dec 18 14:19:40.942 INFO [stderr] 77 |     pub struct template_ooo;
Dec 18 14:19:40.942 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:19:40.942 INFO [stderr]    |
Dec 18 14:19:40.943 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 14:19:40.943 INFO [stderr] 
Dec 18 14:19:40.943 INFO [stderr] warning: method is never used: `output`
Dec 18 14:19:40.943 INFO [stderr]   --> src/compiler.rs:80:9
Dec 18 14:19:40.943 INFO [stderr]    |
Dec 18 14:19:40.943 INFO [stderr] 80 | /         pub fn output<I, O>(input: &mut I, output: &mut O)
Dec 18 14:19:40.943 INFO [stderr] 81 | |             -> Result<usize, io::Error>
Dec 18 14:19:40.943 INFO [stderr] 82 | |         where
Dec 18 14:19:40.943 INFO [stderr] 83 | |             I: io::Read + io::Seek, O: io::Write
Dec 18 14:19:40.943 INFO [stderr] ...  |
Dec 18 14:19:40.943 INFO [stderr] 86 | |             Ok(0)
Dec 18 14:19:40.943 INFO [stderr] 87 | |         }
Dec 18 14:19:40.943 INFO [stderr]    | |_________^
Dec 18 14:19:40.943 INFO [stderr] 
Dec 18 14:19:41.111 INFO [stderr] warning: unused import: `Write`
Dec 18 14:19:41.111 INFO [stderr]   --> src/lib.rs:14:22
Dec 18 14:19:41.111 INFO [stderr]    |
Dec 18 14:19:41.111 INFO [stderr] 14 | use std::io::{ self, Write };
Dec 18 14:19:41.111 INFO [stderr]    |                      ^^^^^
Dec 18 14:19:41.111 INFO [stderr] 
Dec 18 14:19:41.111 INFO [stderr] warning: unused import: `Read`
Dec 18 14:19:41.111 INFO [stderr]  --> src/interpreter.rs:4:16
Dec 18 14:19:41.111 INFO [stderr]   |
Dec 18 14:19:41.111 INFO [stderr] 4 | use std::io::{ Read, Write };
Dec 18 14:19:41.111 INFO [stderr]   |                ^^^^
Dec 18 14:19:41.111 INFO [stderr] 
Dec 18 14:19:41.140 INFO [stderr] warning: unused variable: `id`
Dec 18 14:19:41.140 INFO [stderr]   --> src/interpreter.rs:64:27
Dec 18 14:19:41.140 INFO [stderr]    |
Dec 18 14:19:41.140 INFO [stderr] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 18 14:19:41.140 INFO [stderr]    |                           ^^ help: consider using `_id` instead
Dec 18 14:19:41.140 INFO [stderr]    |
Dec 18 14:19:41.140 INFO [stderr]    = note: #[warn(unused_variables)] on by default
Dec 18 14:19:41.140 INFO [stderr] 
Dec 18 14:19:41.140 INFO [stderr] warning: unused variable: `env`
Dec 18 14:19:41.140 INFO [stderr]   --> src/interpreter.rs:64:37
Dec 18 14:19:41.140 INFO [stderr]    |
Dec 18 14:19:41.140 INFO [stderr] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 18 14:19:41.140 INFO [stderr]    |                                     ^^^ help: consider using `_env` instead
Dec 18 14:19:41.140 INFO [stderr] 
Dec 18 14:19:41.140 INFO [stderr] warning: unused variable: `calls`
Dec 18 14:19:41.140 INFO [stderr]   --> src/interpreter.rs:64:55
Dec 18 14:19:41.140 INFO [stderr]    |
Dec 18 14:19:41.140 INFO [stderr] 64 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 18 14:19:41.140 INFO [stderr]    |                                                       ^^^^^ help: consider using `_calls` instead
Dec 18 14:19:41.141 INFO [stderr] 
Dec 18 14:19:41.141 INFO [stderr] warning: unused variable: `name`
Dec 18 14:19:41.141 INFO [stderr]    --> src/interpreter.rs:136:49
Dec 18 14:19:41.141 INFO [stderr]     |
Dec 18 14:19:41.141 INFO [stderr] 136 |                     Instruction::Property { mut name } => {
Dec 18 14:19:41.141 INFO [stderr]     |                                                 ^^^^ help: try ignoring the field: `name: _`
Dec 18 14:19:41.142 INFO [stderr] 
Dec 18 14:19:41.142 INFO [stderr] warning: unused variable: `name`
Dec 18 14:19:41.142 INFO [stderr]    --> src/interpreter.rs:267:30
Dec 18 14:19:41.142 INFO [stderr]     |
Dec 18 14:19:41.142 INFO [stderr] 267 |             Mem::Parameter { name } => {
Dec 18 14:19:41.142 INFO [stderr]     |                              ^^^^ help: try ignoring the field: `name: _`
Dec 18 14:19:41.142 INFO [stderr] 
Dec 18 14:19:41.143 INFO [stderr] warning: unused variable: `id`
Dec 18 14:19:41.143 INFO [stderr]   --> src/compiler.rs:36:27
Dec 18 14:19:41.143 INFO [stderr]    |
Dec 18 14:19:41.143 INFO [stderr] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 18 14:19:41.143 INFO [stderr]    |                           ^^ help: consider using `_id` instead
Dec 18 14:19:41.143 INFO [stderr] 
Dec 18 14:19:41.143 INFO [stderr] warning: unused variable: `env`
Dec 18 14:19:41.144 INFO [stderr]   --> src/compiler.rs:36:37
Dec 18 14:19:41.144 INFO [stderr]    |
Dec 18 14:19:41.144 INFO [stderr] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 18 14:19:41.144 INFO [stderr]    |                                     ^^^ help: consider using `_env` instead
Dec 18 14:19:41.144 INFO [stderr] 
Dec 18 14:19:41.144 INFO [stderr] warning: unused variable: `calls`
Dec 18 14:19:41.144 INFO [stderr]   --> src/compiler.rs:36:55
Dec 18 14:19:41.144 INFO [stderr]    |
Dec 18 14:19:41.144 INFO [stderr] 36 |     fn load(&'a mut self, id: &str, env: Fingerprint, calls: &'a Vec<&'a (Function<V> + 'a)>)
Dec 18 14:19:41.144 INFO [stderr]    |                                                       ^^^^^ help: consider using `_calls` instead
Dec 18 14:19:41.144 INFO [stderr] 
Dec 18 14:19:41.145 INFO [stderr] warning: unused variable: `buf`
Dec 18 14:19:41.145 INFO [stderr]   --> src/compiler.rs:68:24
Dec 18 14:19:41.145 INFO [stderr]    |
Dec 18 14:19:41.145 INFO [stderr] 68 |     fn read(&mut self, buf: &mut [u8]) -> io::Result<usize> {
Dec 18 14:19:41.145 INFO [stderr]    |                        ^^^ help: consider using `_buf` instead
Dec 18 14:19:41.145 INFO [stderr] 
Dec 18 14:19:41.145 INFO [stderr] warning: unused variable: `input`
Dec 18 14:19:41.145 INFO [stderr]   --> src/compiler.rs:80:29
Dec 18 14:19:41.145 INFO [stderr]    |
Dec 18 14:19:41.145 INFO [stderr] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
Dec 18 14:19:41.145 INFO [stderr]    |                             ^^^^^ help: consider using `_input` instead
Dec 18 14:19:41.145 INFO [stderr] 
Dec 18 14:19:41.148 INFO [stderr] warning: unused variable: `output`
Dec 18 14:19:41.148 INFO [stderr]   --> src/compiler.rs:80:44
Dec 18 14:19:41.148 INFO [stderr]    |
Dec 18 14:19:41.148 INFO [stderr] 80 |         pub fn output<I, O>(input: &mut I, output: &mut O)
Dec 18 14:19:41.148 INFO [stderr]    |                                            ^^^^^^ help: consider using `_output` instead
Dec 18 14:19:41.148 INFO [stderr] 
Dec 18 14:19:41.234 INFO [stderr] warning: struct is never constructed: `template_ooo`
Dec 18 14:19:41.234 INFO [stderr]   --> src/compiler.rs:77:5
Dec 18 14:19:41.234 INFO [stderr]    |
Dec 18 14:19:41.234 INFO [stderr] 77 |     pub struct template_ooo;
Dec 18 14:19:41.235 INFO [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^
Dec 18 14:19:41.235 INFO [stderr]    |
Dec 18 14:19:41.235 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 14:19:41.235 INFO [stderr] 
Dec 18 14:19:41.236 INFO [stderr] warning: method is never used: `output`
Dec 18 14:19:41.236 INFO [stderr]   --> src/compiler.rs:80:9
Dec 18 14:19:41.236 INFO [stderr]    |
Dec 18 14:19:41.240 INFO [stderr] 80 | /         pub fn output<I, O>(input: &mut I, output: &mut O)
Dec 18 14:19:41.240 INFO [stderr] 81 | |             -> Result<usize, io::Error>
Dec 18 14:19:41.240 INFO [stderr] 82 | |         where
Dec 18 14:19:41.240 INFO [stderr] 83 | |             I: io::Read + io::Seek, O: io::Write
Dec 18 14:19:41.240 INFO [stderr] ...  |
Dec 18 14:19:41.240 INFO [stderr] 86 | |             Ok(0)
Dec 18 14:19:41.240 INFO [stderr] 87 | |         }
Dec 18 14:19:41.240 INFO [stderr]    | |_________^
Dec 18 14:19:41.240 INFO [stderr] 
Dec 18 14:19:41.360 INFO [stderr] warning: unused import: `Write`
Dec 18 14:19:41.360 INFO [stderr]  --> examples/hello_world.rs:4:22
Dec 18 14:19:41.360 INFO [stderr]   |
Dec 18 14:19:41.360 INFO [stderr] 4 | use std::io::{ Read, Write };
Dec 18 14:19:41.360 INFO [stderr]   |                      ^^^^^
Dec 18 14:19:41.360 INFO [stderr]   |
Dec 18 14:19:41.360 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 14:19:41.360 INFO [stderr] 
Dec 18 14:19:41.696 INFO [stderr] warning: unused `#[macro_use]` import
Dec 18 14:19:41.696 INFO [stderr]  --> tests/compiler.rs:2:1
Dec 18 14:19:41.696 INFO [stderr]   |
Dec 18 14:19:41.696 INFO [stderr] 2 | #[macro_use] extern crate log;
Dec 18 14:19:41.696 INFO [stderr]   | ^^^^^^^^^^^^
Dec 18 14:19:41.696 INFO [stderr]   |
Dec 18 14:19:41.696 INFO [stderr]   = note: #[warn(unused_imports)] on by default
Dec 18 14:19:41.696 INFO [stderr] 
Dec 18 14:19:41.788 INFO [stderr] warning: function is never used: `output_param`
Dec 18 14:19:41.788 INFO [stderr]   --> tests/compiler.rs:16:1
Dec 18 14:19:41.788 INFO [stderr]    |
Dec 18 14:19:41.788 INFO [stderr] 16 | fn output_param() {
Dec 18 14:19:41.788 INFO [stderr]    | ^^^^^^^^^^^^^^^^^
Dec 18 14:19:41.788 INFO [stderr]    |
Dec 18 14:19:41.788 INFO [stderr]    = note: #[warn(dead_code)] on by default
Dec 18 14:19:41.788 INFO [stderr] 
Dec 18 14:19:41.811 INFO [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.62s
Dec 18 14:19:42.146 INFO running `"docker" "inspect" "9b0e6244311fc13639ca5c9d599efaaf6922a78f7326f8f0bf7f9e42e514b090"`
Dec 18 14:19:42.252 INFO running `"docker" "rm" "-f" "9b0e6244311fc13639ca5c9d599efaaf6922a78f7326f8f0bf7f9e42e514b090"`
Dec 18 14:19:42.424 INFO [stdout] 9b0e6244311fc13639ca5c9d599efaaf6922a78f7326f8f0bf7f9e42e514b090