[INFO] updating cached repository strexicious/believmr
[INFO] running `"git" "fetch" "--all"`
[INFO] [stdout] Fetching origin
[INFO] [stderr] From git://github.com/strexicious/believmr
[INFO] [stderr]  * branch            HEAD       -> FETCH_HEAD
[INFO] running `"git" "clone" "work/cache/sources/gh/strexicious/believmr" "work/ex/beta-1.38-1/sources/1.37.0/gh/strexicious/believmr"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/1.37.0/gh/strexicious/believmr'...
[INFO] [stderr] done.
[INFO] running `"git" "clone" "work/cache/sources/gh/strexicious/believmr" "work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/strexicious/believmr"`
[INFO] [stderr] Cloning into 'work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/strexicious/believmr'...
[INFO] [stderr] done.
[INFO] running `"git" "rev-parse" "HEAD"`
[INFO] [stdout] aa1f258ca7f0db2250f1d2aa5efba1316e0cd0f6
[INFO] sha for GitHub repo strexicious/believmr: aa1f258ca7f0db2250f1d2aa5efba1316e0cd0f6
[INFO] validating manifest of strexicious/believmr 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 strexicious/believmr 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 strexicious/believmr
[INFO] finished frobbing strexicious/believmr
[INFO] frobbed toml for strexicious/believmr written to work/ex/beta-1.38-1/sources/1.37.0/gh/strexicious/believmr/Cargo.toml
[INFO] started frobbing strexicious/believmr
[INFO] finished frobbing strexicious/believmr
[INFO] frobbed toml for strexicious/believmr written to work/ex/beta-1.38-1/sources/beta-2019-08-13/gh/strexicious/believmr/Cargo.toml
[INFO] crate strexicious/believmr 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] running `"/mnt/big/crater/work/local/cargo-home/bin/cargo" "+beta-2019-08-13" "fetch" "--locked" "--manifest-path" "Cargo.toml"`
[INFO] testing strexicious/believmr 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/strexicious/believmr:/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] 697ad674ce1725e569cd6582e6b8a92b0aa218c6adf7769ce8d3112d696f64de
[INFO] running `"docker" "start" "-a" "697ad674ce1725e569cd6582e6b8a92b0aa218c6adf7769ce8d3112d696f64de"`
[INFO] [stderr]    Compiling pom v3.0.2
[INFO] [stderr]    Compiling believmr v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fs::File;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::Read;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser.rs:64:82
[INFO] [stderr]    |
[INFO] [stderr] 64 |     (op_code + literal + dest).map(|((_, b), c)| Box::new(Mov::new(b, c)) as Box<Instruction>)
[INFO] [stderr]    |                                                                                  ^^^^^^^^^^^ help: use `dyn`: `dyn Instruction`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser.rs:71:81
[INFO] [stderr]    |
[INFO] [stderr] 71 |     (op_code + src + dest).map(|((a, b), c)| Box::new(Alu::new(a, b, c)) as Box<Instruction>)
[INFO] [stderr]    |                                                                                 ^^^^^^^^^^^ help: use `dyn`: `dyn Instruction`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser.rs:77:67
[INFO] [stderr]    |
[INFO] [stderr] 77 |     (op_code + off).map(|(a, b)| Box::new(Jump::new(a, b)) as Box<Instruction>)
[INFO] [stderr]    |                                                                   ^^^^^^^^^^^ help: use `dyn`: `dyn Instruction`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `client`
[INFO] [stderr]   --> src/main.rs:20:17
[INFO] [stderr]    |
[INFO] [stderr] 20 |         let mut client = cluster::Worker::register(763, "127.0.0.1:3000").unwrap();
[INFO] [stderr]    |                 ^^^^^^ help: consider prefixing with an underscore: `_client`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:20:13
[INFO] [stderr]    |
[INFO] [stderr] 20 |         let mut client = cluster::Worker::register(763, "127.0.0.1:3000").unwrap();
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `whitespace`
[INFO] [stderr]  --> src/parser.rs:7:1
[INFO] [stderr]   |
[INFO] [stderr] 7 | fn whitespace<'a>() -> Parser<'a, u8, ()> {
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `whitespace_opt`
[INFO] [stderr]   --> src/parser.rs:11:1
[INFO] [stderr]    |
[INFO] [stderr] 11 | fn whitespace_opt<'a>() -> Parser<'a, u8, ()> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `dec_value`
[INFO] [stderr]   --> src/parser.rs:15:1
[INFO] [stderr]    |
[INFO] [stderr] 15 | fn dec_value<'a>() -> Parser<'a, u8, String> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `hex_value`
[INFO] [stderr]   --> src/parser.rs:20:1
[INFO] [stderr]    |
[INFO] [stderr] 20 | fn hex_value<'a>() -> Parser<'a, u8, String> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mem_addr`
[INFO] [stderr]   --> src/parser.rs:25:1
[INFO] [stderr]    |
[INFO] [stderr] 25 | fn mem_addr<'a>() -> Parser<'a, u8, u16> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `offset`
[INFO] [stderr]   --> src/parser.rs:29:1
[INFO] [stderr]    |
[INFO] [stderr] 29 | fn offset<'a>() -> Parser<'a, u8, i16> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `integer`
[INFO] [stderr]   --> src/parser.rs:33:1
[INFO] [stderr]    |
[INFO] [stderr] 33 | fn integer<'a>() -> Parser<'a, u8, i32> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `alu_op`
[INFO] [stderr]   --> src/parser.rs:39:1
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn alu_op<'a>() -> Parser<'a, u8, u8> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `j_cond`
[INFO] [stderr]   --> src/parser.rs:52:1
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn j_cond<'a>() -> Parser<'a, u8, u8> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mov_instr`
[INFO] [stderr]   --> src/parser.rs:60:1
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn mov_instr<'a>() -> Parser<'a, u8, Box<dyn Instruction>> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `alu_instr`
[INFO] [stderr]   --> src/parser.rs:67:1
[INFO] [stderr]    |
[INFO] [stderr] 67 | fn alu_instr<'a>() -> Parser<'a, u8, Box<dyn Instruction>> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `jmp_instr`
[INFO] [stderr]   --> src/parser.rs:74:1
[INFO] [stderr]    |
[INFO] [stderr] 74 | fn jmp_instr<'a>() -> Parser<'a, u8, Box<dyn Instruction>> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `instr`
[INFO] [stderr]   --> src/parser.rs:80:1
[INFO] [stderr]    |
[INFO] [stderr] 80 | pub fn instr<'a>() -> Parser<'a, u8, Box<dyn Instruction>> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/engine.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(program_size: usize) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_mem`
[INFO] [stderr]   --> src/engine.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn print_mem(&self, pos: u16) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Mov`
[INFO] [stderr]   --> src/engine.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub struct Mov {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/engine.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn new(literal: i32, dest: u16) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Alu`
[INFO] [stderr]   --> src/engine.rs:42:1
[INFO] [stderr]    |
[INFO] [stderr] 42 | pub struct Alu {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/engine.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub fn new(alu_op: u8, src: u16, dest: u16) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Jump`
[INFO] [stderr]   --> src/engine.rs:86:1
[INFO] [stderr]    |
[INFO] [stderr] 86 | pub struct Jump {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/engine.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn new(op_code: u8, offset: i16) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Process`
[INFO] [stderr]    --> src/engine.rs:120:1
[INFO] [stderr]     |
[INFO] [stderr] 120 | pub struct Process {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/engine.rs:126:5
[INFO] [stderr]     |
[INFO] [stderr] 126 |     pub fn new(source_code: String) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `run`
[INFO] [stderr]    --> src/engine.rs:135:5
[INFO] [stderr]     |
[INFO] [stderr] 135 |     pub fn run(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `id`
[INFO] [stderr]  --> src/cluster.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     id: usize,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `host`
[INFO] [stderr]  --> src/cluster.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     host: TcpStream,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/cluster.rs:18:17
[INFO] [stderr]    |
[INFO] [stderr] 18 |                 host.flush();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/cluster.rs:41:21
[INFO] [stderr]    |
[INFO] [stderr] 41 |                     worker.write_all("tell id".as_bytes());
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/cluster.rs:42:21
[INFO] [stderr]    |
[INFO] [stderr] 42 |                     worker.flush();
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 2.81s
[INFO] running `"docker" "inspect" "697ad674ce1725e569cd6582e6b8a92b0aa218c6adf7769ce8d3112d696f64de"`
[INFO] running `"docker" "rm" "-f" "697ad674ce1725e569cd6582e6b8a92b0aa218c6adf7769ce8d3112d696f64de"`
[INFO] [stdout] 697ad674ce1725e569cd6582e6b8a92b0aa218c6adf7769ce8d3112d696f64de
[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/strexicious/believmr:/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] 3e72f468687cee504dd96d4cbc828ebe8478669a13212320c373582dce4320cf
[INFO] running `"docker" "start" "-a" "3e72f468687cee504dd96d4cbc828ebe8478669a13212320c373582dce4320cf"`
[INFO] [stderr]    Compiling believmr v0.1.0 (/opt/crater/workdir)
[INFO] [stderr] warning: unused import: `std::fs::File`
[INFO] [stderr]  --> src/main.rs:1:5
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::fs::File;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::io::Read`
[INFO] [stderr]  --> src/main.rs:2:5
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::io::Read;
[INFO] [stderr]   |     ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser.rs:64:82
[INFO] [stderr]    |
[INFO] [stderr] 64 |     (op_code + literal + dest).map(|((_, b), c)| Box::new(Mov::new(b, c)) as Box<Instruction>)
[INFO] [stderr]    |                                                                                  ^^^^^^^^^^^ help: use `dyn`: `dyn Instruction`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(bare_trait_objects)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser.rs:71:81
[INFO] [stderr]    |
[INFO] [stderr] 71 |     (op_code + src + dest).map(|((a, b), c)| Box::new(Alu::new(a, b, c)) as Box<Instruction>)
[INFO] [stderr]    |                                                                                 ^^^^^^^^^^^ help: use `dyn`: `dyn Instruction`
[INFO] [stderr] 
[INFO] [stderr] warning: trait objects without an explicit `dyn` are deprecated
[INFO] [stderr]   --> src/parser.rs:77:67
[INFO] [stderr]    |
[INFO] [stderr] 77 |     (op_code + off).map(|(a, b)| Box::new(Jump::new(a, b)) as Box<Instruction>)
[INFO] [stderr]    |                                                                   ^^^^^^^^^^^ help: use `dyn`: `dyn Instruction`
[INFO] [stderr] 
[INFO] [stderr] warning: unused variable: `client`
[INFO] [stderr]   --> src/main.rs:20:17
[INFO] [stderr]    |
[INFO] [stderr] 20 |         let mut client = cluster::Worker::register(763, "127.0.0.1:3000").unwrap();
[INFO] [stderr]    |                 ^^^^^^ help: consider prefixing with an underscore: `_client`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_variables)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: variable does not need to be mutable
[INFO] [stderr]   --> src/main.rs:20:13
[INFO] [stderr]    |
[INFO] [stderr] 20 |         let mut client = cluster::Worker::register(763, "127.0.0.1:3000").unwrap();
[INFO] [stderr]    |             ----^^^^^^
[INFO] [stderr]    |             |
[INFO] [stderr]    |             help: remove this `mut`
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_mut)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `alu_op`
[INFO] [stderr]   --> src/parser.rs:39:1
[INFO] [stderr]    |
[INFO] [stderr] 39 | fn alu_op<'a>() -> Parser<'a, u8, u8> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `j_cond`
[INFO] [stderr]   --> src/parser.rs:52:1
[INFO] [stderr]    |
[INFO] [stderr] 52 | fn j_cond<'a>() -> Parser<'a, u8, u8> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `mov_instr`
[INFO] [stderr]   --> src/parser.rs:60:1
[INFO] [stderr]    |
[INFO] [stderr] 60 | fn mov_instr<'a>() -> Parser<'a, u8, Box<dyn Instruction>> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `alu_instr`
[INFO] [stderr]   --> src/parser.rs:67:1
[INFO] [stderr]    |
[INFO] [stderr] 67 | fn alu_instr<'a>() -> Parser<'a, u8, Box<dyn Instruction>> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `jmp_instr`
[INFO] [stderr]   --> src/parser.rs:74:1
[INFO] [stderr]    |
[INFO] [stderr] 74 | fn jmp_instr<'a>() -> Parser<'a, u8, Box<dyn Instruction>> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: function is never used: `instr`
[INFO] [stderr]   --> src/parser.rs:80:1
[INFO] [stderr]    |
[INFO] [stderr] 80 | pub fn instr<'a>() -> Parser<'a, u8, Box<dyn Instruction>> {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/engine.rs:11:5
[INFO] [stderr]    |
[INFO] [stderr] 11 |     pub fn new(program_size: usize) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `print_mem`
[INFO] [stderr]   --> src/engine.rs:15:5
[INFO] [stderr]    |
[INFO] [stderr] 15 |     pub fn print_mem(&self, pos: u16) {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Mov`
[INFO] [stderr]   --> src/engine.rs:24:1
[INFO] [stderr]    |
[INFO] [stderr] 24 | pub struct Mov {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/engine.rs:30:5
[INFO] [stderr]    |
[INFO] [stderr] 30 |     pub fn new(literal: i32, dest: u16) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Alu`
[INFO] [stderr]   --> src/engine.rs:42:1
[INFO] [stderr]    |
[INFO] [stderr] 42 | pub struct Alu {
[INFO] [stderr]    | ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/engine.rs:49:5
[INFO] [stderr]    |
[INFO] [stderr] 49 |     pub fn new(alu_op: u8, src: u16, dest: u16) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Jump`
[INFO] [stderr]   --> src/engine.rs:86:1
[INFO] [stderr]    |
[INFO] [stderr] 86 | pub struct Jump {
[INFO] [stderr]    | ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]   --> src/engine.rs:92:5
[INFO] [stderr]    |
[INFO] [stderr] 92 |     pub fn new(op_code: u8, offset: i16) -> Self {
[INFO] [stderr]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Process`
[INFO] [stderr]    --> src/engine.rs:120:1
[INFO] [stderr]     |
[INFO] [stderr] 120 | pub struct Process {
[INFO] [stderr]     | ^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `new`
[INFO] [stderr]    --> src/engine.rs:126:5
[INFO] [stderr]     |
[INFO] [stderr] 126 |     pub fn new(source_code: String) -> Self {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: method is never used: `run`
[INFO] [stderr]    --> src/engine.rs:135:5
[INFO] [stderr]     |
[INFO] [stderr] 135 |     pub fn run(&mut self) {
[INFO] [stderr]     |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `id`
[INFO] [stderr]  --> src/cluster.rs:6:5
[INFO] [stderr]   |
[INFO] [stderr] 6 |     id: usize,
[INFO] [stderr]   |     ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: field is never used: `host`
[INFO] [stderr]  --> src/cluster.rs:7:5
[INFO] [stderr]   |
[INFO] [stderr] 7 |     host: TcpStream,
[INFO] [stderr]   |     ^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/cluster.rs:18:17
[INFO] [stderr]    |
[INFO] [stderr] 18 |                 host.flush();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/cluster.rs:41:21
[INFO] [stderr]    |
[INFO] [stderr] 41 |                     worker.write_all("tell id".as_bytes());
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `std::result::Result` that must be used
[INFO] [stderr]   --> src/cluster.rs:42:21
[INFO] [stderr]    |
[INFO] [stderr] 42 |                     worker.flush();
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 1.80s
[INFO] running `"docker" "inspect" "3e72f468687cee504dd96d4cbc828ebe8478669a13212320c373582dce4320cf"`
[INFO] running `"docker" "rm" "-f" "3e72f468687cee504dd96d4cbc828ebe8478669a13212320c373582dce4320cf"`
[INFO] [stdout] 3e72f468687cee504dd96d4cbc828ebe8478669a13212320c373582dce4320cf
[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/strexicious/believmr:/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] 23b0ec538f8f94e739baa0e25c3daf16c35f9c671ee789e090330e8f3d848325
[INFO] running `"docker" "start" "-a" "23b0ec538f8f94e739baa0e25c3daf16c35f9c671ee789e090330e8f3d848325"`
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.03s
[INFO] [stderr]      Running /opt/crater/target/debug/deps/believmr-3b09c59f3a2524bc
[INFO] [stdout] 
[INFO] [stdout] running 4 tests
[INFO] [stdout] test parser::tests::offset_parses ... ok
[INFO] [stdout] test parser::tests::mem_addr_parses ... ok
[INFO] [stdout] test parser::tests::numbers ... ok
[INFO] [stdout] test parser::tests::whitespaces ... ok
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 4 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out
[INFO] [stdout] 
[INFO] running `"docker" "inspect" "23b0ec538f8f94e739baa0e25c3daf16c35f9c671ee789e090330e8f3d848325"`
[INFO] running `"docker" "rm" "-f" "23b0ec538f8f94e739baa0e25c3daf16c35f9c671ee789e090330e8f3d848325"`
[INFO] [stdout] 23b0ec538f8f94e739baa0e25c3daf16c35f9c671ee789e090330e8f3d848325