[INFO] cloning repository https://github.com/strexicious/believmr
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/strexicious/believmr" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrexicious%2Fbelievmr", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrexicious%2Fbelievmr'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 72c33c3ddfd0364db1d600549c3074a6bd1732f8
[INFO] testing strexicious/believmr against beta-2022-04-10 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fstrexicious%2Fbelievmr" "/workspace/builds/worker-66/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-66/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/strexicious/believmr on toolchain beta-2022-04-10
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/strexicious/believmr
[INFO] finished tweaking git repo https://github.com/strexicious/believmr
[INFO] tweaked toml for git repo https://github.com/strexicious/believmr written to /workspace/builds/worker-66/source/Cargo.toml
[INFO] crate git repo https://github.com/strexicious/believmr already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+beta-2022-04-10" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7dff061cdcbe309eb669d8b3feb4128cddd35b905acdd66a05f505461aeb18b4
[INFO] running `Command { std: "docker" "start" "-a" "7dff061cdcbe309eb669d8b3feb4128cddd35b905acdd66a05f505461aeb18b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7dff061cdcbe309eb669d8b3feb4128cddd35b905acdd66a05f505461aeb18b4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7dff061cdcbe309eb669d8b3feb4128cddd35b905acdd66a05f505461aeb18b4", kill_on_drop: false }`
[INFO] [stdout] 7dff061cdcbe309eb669d8b3feb4128cddd35b905acdd66a05f505461aeb18b4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] fbf604856c3f31a9c7abd19de1c6837688aa57efe7d700bd68f7aa2ec2be303c
[INFO] running `Command { std: "docker" "start" "-a" "fbf604856c3f31a9c7abd19de1c6837688aa57efe7d700bd68f7aa2ec2be303c", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v0.4.30
[INFO] [stderr]    Compiling unicode-xid v0.1.0
[INFO] [stderr]    Compiling syn v0.15.42
[INFO] [stderr]    Compiling serde v1.0.98
[INFO] [stderr]    Compiling byteorder v1.3.2
[INFO] [stderr]    Compiling autocfg v0.1.5
[INFO] [stderr]    Compiling bincode v1.1.4
[INFO] [stderr]    Compiling quote v0.6.13
[INFO] [stderr]    Compiling serde_derive v1.0.98
[INFO] [stderr]    Compiling believmr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TcpListener`
[INFO] [stdout]  --> src/cluster/worker.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::net::{TcpListener, TcpStream, ToSocketAddrs};
[INFO] [stdout]   |                ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/cluster/worker.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ErrorKind`, `Error`
[INFO] [stdout]  --> src/cluster/master.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Result, Error, ErrorKind, Read, Write};
[INFO] [stdout]   |                       ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/cluster/master.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print_mem`
[INFO] [stdout]   --> src/engine.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn print_mem(&self, pos: u16, offset: u16) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print_program`
[INFO] [stdout]   --> src/engine.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn print_program(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Worker`
[INFO] [stdout]  --> src/cluster/worker.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Worker {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `register`
[INFO] [stdout]   --> src/cluster/worker.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn register<A: ToSocketAddrs>(id: usize, to: A) -> Result<Self> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Master`
[INFO] [stdout]  --> src/cluster/master.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Master {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `listen_on`
[INFO] [stdout]   --> src/cluster/master.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn listen_on<A: ToSocketAddrs>(addr: A) -> Result<Self> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `accept_workers`
[INFO] [stdout]   --> src/cluster/master.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn accept_workers(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MESSAGE_SIZE`
[INFO] [stdout]  --> src/cluster/message.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub const MESSAGE_SIZE: usize = mem::size_of::<Message>();
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `serialized`
[INFO] [stdout]   --> src/cluster/message.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn serialized(&self) -> [u8; MESSAGE_SIZE] {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cluster/worker.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         host.read_exact(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cluster/worker.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 host.flush();
[INFO] [stdout]    |                 ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cluster/master.rs:23:21
[INFO] [stdout]    |
[INFO] [stdout] 23 |                     worker.flush();
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cluster/master.rs:26:21
[INFO] [stdout]    |
[INFO] [stdout] 26 |                     worker.read_exact(&mut buffer);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 15.43s
[INFO] running `Command { std: "docker" "inspect" "fbf604856c3f31a9c7abd19de1c6837688aa57efe7d700bd68f7aa2ec2be303c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "fbf604856c3f31a9c7abd19de1c6837688aa57efe7d700bd68f7aa2ec2be303c", kill_on_drop: false }`
[INFO] [stdout] fbf604856c3f31a9c7abd19de1c6837688aa57efe7d700bd68f7aa2ec2be303c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 7d1cb1d1e9f532bce59b8d88f30a7a3bd6566b2d37553ded1b65eb9954bf7dfb
[INFO] running `Command { std: "docker" "start" "-a" "7d1cb1d1e9f532bce59b8d88f30a7a3bd6566b2d37553ded1b65eb9954bf7dfb", kill_on_drop: false }`
[INFO] [stderr]    Compiling believmr v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TcpListener`
[INFO] [stdout]  --> src/cluster/worker.rs:2:16
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::net::{TcpListener, TcpStream, ToSocketAddrs};
[INFO] [stdout]   |                ^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/cluster/worker.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `ErrorKind`, `Error`
[INFO] [stdout]  --> src/cluster/master.rs:1:23
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{Result, Error, ErrorKind, Read, Write};
[INFO] [stdout]   |                       ^^^^^  ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `std::mem`
[INFO] [stdout]  --> src/cluster/master.rs:4:5
[INFO] [stdout]   |
[INFO] [stdout] 4 | use std::mem;
[INFO] [stdout]   |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print_mem`
[INFO] [stdout]   --> src/engine.rs:71:12
[INFO] [stdout]    |
[INFO] [stdout] 71 |     pub fn print_mem(&self, pos: u16, offset: u16) {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `print_program`
[INFO] [stdout]   --> src/engine.rs:75:12
[INFO] [stdout]    |
[INFO] [stdout] 75 |     pub fn print_program(&self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Worker`
[INFO] [stdout]  --> src/cluster/worker.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | pub struct Worker {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `register`
[INFO] [stdout]   --> src/cluster/worker.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn register<A: ToSocketAddrs>(id: usize, to: A) -> Result<Self> {
[INFO] [stdout]    |            ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct is never constructed: `Master`
[INFO] [stdout]  --> src/cluster/master.rs:8:12
[INFO] [stdout]   |
[INFO] [stdout] 8 | pub struct Master {
[INFO] [stdout]   |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `listen_on`
[INFO] [stdout]   --> src/cluster/master.rs:14:12
[INFO] [stdout]    |
[INFO] [stdout] 14 |     pub fn listen_on<A: ToSocketAddrs>(addr: A) -> Result<Self> {
[INFO] [stdout]    |            ^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `accept_workers`
[INFO] [stdout]   --> src/cluster/master.rs:18:12
[INFO] [stdout]    |
[INFO] [stdout] 18 |     pub fn accept_workers(&mut self) {
[INFO] [stdout]    |            ^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: constant is never used: `MESSAGE_SIZE`
[INFO] [stdout]  --> src/cluster/message.rs:4:1
[INFO] [stdout]   |
[INFO] [stdout] 4 | pub const MESSAGE_SIZE: usize = mem::size_of::<Message>();
[INFO] [stdout]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function is never used: `serialized`
[INFO] [stdout]   --> src/cluster/message.rs:13:12
[INFO] [stdout]    |
[INFO] [stdout] 13 |     pub fn serialized(&self) -> [u8; MESSAGE_SIZE] {
[INFO] [stdout]    |            ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cluster/worker.rs:17:9
[INFO] [stdout]    |
[INFO] [stdout] 17 |         host.read_exact(&mut buffer);
[INFO] [stdout]    |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cluster/worker.rs:22:17
[INFO] [stdout]    |
[INFO] [stdout] 22 |                 host.flush();
[INFO] [stdout]    |                 ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cluster/master.rs:23:21
[INFO] [stdout]    |
[INFO] [stdout] 23 |                     worker.flush();
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]   --> src/cluster/master.rs:26:21
[INFO] [stdout]    |
[INFO] [stdout] 26 |                     worker.read_exact(&mut buffer);
[INFO] [stdout]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 17 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.41s
[INFO] [stderr]   Executable unittests src/main.rs (/opt/rustwide/target/debug/deps/believmr-1eb7eea979121357)
[INFO] running `Command { std: "docker" "inspect" "7d1cb1d1e9f532bce59b8d88f30a7a3bd6566b2d37553ded1b65eb9954bf7dfb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7d1cb1d1e9f532bce59b8d88f30a7a3bd6566b2d37553ded1b65eb9954bf7dfb", kill_on_drop: false }`
[INFO] [stdout] 7d1cb1d1e9f532bce59b8d88f30a7a3bd6566b2d37553ded1b65eb9954bf7dfb
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-66/source:/opt/rustwide/workdir:ro,Z" "-v" "/var/lib/crater-agent-workspace/cargo-home:/opt/rustwide/cargo-home:ro,Z" "-v" "/var/lib/crater-agent-workspace/rustup-home:/opt/rustwide/rustup-home:ro,Z" "-e" "SOURCE_DIR=/opt/rustwide/workdir" "-e" "CARGO_TARGET_DIR=/opt/rustwide/target" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=warn" "-e" "CARGO_HOME=/opt/rustwide/cargo-home" "-e" "RUSTUP_HOME=/opt/rustwide/rustup-home" "-w" "/opt/rustwide/workdir" "-m" "1610612736" "--user" "0:0" "--network" "none" "ghcr.io/rust-lang/crates-build-env/linux@sha256:b0c94ce3c1162fcb8e57cac5b65ec2f72eabb1eebea4fcc35e269e823f681646" "/opt/rustwide/cargo-home/bin/cargo" "+beta-2022-04-10" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] ee6423b0284c8039882d39c189c81748593287f5427a9d8465d524195462ffe9
[INFO] running `Command { std: "docker" "start" "-a" "ee6423b0284c8039882d39c189c81748593287f5427a9d8465d524195462ffe9", kill_on_drop: false }`
[INFO] [stderr] warning: unused import: `TcpListener`
[INFO] [stderr]  --> src/cluster/worker.rs:2:16
[INFO] [stderr]   |
[INFO] [stderr] 2 | use std::net::{TcpListener, TcpStream, ToSocketAddrs};
[INFO] [stderr]   |                ^^^^^^^^^^^
[INFO] [stderr]   |
[INFO] [stderr]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/cluster/worker.rs:3:5
[INFO] [stderr]   |
[INFO] [stderr] 3 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused imports: `ErrorKind`, `Error`
[INFO] [stderr]  --> src/cluster/master.rs:1:23
[INFO] [stderr]   |
[INFO] [stderr] 1 | use std::io::{Result, Error, ErrorKind, Read, Write};
[INFO] [stderr]   |                       ^^^^^  ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `std::mem`
[INFO] [stderr]  --> src/cluster/master.rs:4:5
[INFO] [stderr]   |
[INFO] [stderr] 4 | use std::mem;
[INFO] [stderr]   |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `print_mem`
[INFO] [stderr]   --> src/engine.rs:71:12
[INFO] [stderr]    |
[INFO] [stderr] 71 |     pub fn print_mem(&self, pos: u16, offset: u16) {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `print_program`
[INFO] [stderr]   --> src/engine.rs:75:12
[INFO] [stderr]    |
[INFO] [stderr] 75 |     pub fn print_program(&self) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Worker`
[INFO] [stderr]  --> src/cluster/worker.rs:7:12
[INFO] [stderr]   |
[INFO] [stderr] 7 | pub struct Worker {
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `register`
[INFO] [stderr]   --> src/cluster/worker.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn register<A: ToSocketAddrs>(id: usize, to: A) -> Result<Self> {
[INFO] [stderr]    |            ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: struct is never constructed: `Master`
[INFO] [stderr]  --> src/cluster/master.rs:8:12
[INFO] [stderr]   |
[INFO] [stderr] 8 | pub struct Master {
[INFO] [stderr]   |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `listen_on`
[INFO] [stderr]   --> src/cluster/master.rs:14:12
[INFO] [stderr]    |
[INFO] [stderr] 14 |     pub fn listen_on<A: ToSocketAddrs>(addr: A) -> Result<Self> {
[INFO] [stderr]    |            ^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `accept_workers`
[INFO] [stderr]   --> src/cluster/master.rs:18:12
[INFO] [stderr]    |
[INFO] [stderr] 18 |     pub fn accept_workers(&mut self) {
[INFO] [stderr]    |            ^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: constant is never used: `MESSAGE_SIZE`
[INFO] [stderr]  --> src/cluster/message.rs:4:1
[INFO] [stderr]   |
[INFO] [stderr] 4 | pub const MESSAGE_SIZE: usize = mem::size_of::<Message>();
[INFO] [stderr]   | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `serialized`
[INFO] [stderr]   --> src/cluster/message.rs:13:12
[INFO] [stderr]    |
[INFO] [stderr] 13 |     pub fn serialized(&self) -> [u8; MESSAGE_SIZE] {
[INFO] [stderr]    |            ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/cluster/worker.rs:17:9
[INFO] [stderr]    |
[INFO] [stderr] 17 |         host.read_exact(&mut buffer);
[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 `Result` that must be used
[INFO] [stderr]   --> src/cluster/worker.rs:22:17
[INFO] [stderr]    |
[INFO] [stderr] 22 |                 host.flush();
[INFO] [stderr]    |                 ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/cluster/master.rs:23:21
[INFO] [stderr]    |
[INFO] [stderr] 23 |                     worker.flush();
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]   --> src/cluster/master.rs:26:21
[INFO] [stderr]    |
[INFO] [stderr] 26 |                     worker.read_exact(&mut buffer);
[INFO] [stderr]    |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `believmr` (bin "believmr" test) generated 17 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 0.01s
[INFO] [stderr]      Running unittests src/main.rs (/opt/rustwide/target/debug/deps/believmr-1eb7eea979121357)
[INFO] [stdout] 
[INFO] [stdout] running 0 tests
[INFO] [stdout] 
[INFO] [stdout] test result: ok. 0 passed; 0 failed; 0 ignored; 0 measured; 0 filtered out; finished in 0.00s
[INFO] [stdout] 
[INFO] running `Command { std: "docker" "inspect" "ee6423b0284c8039882d39c189c81748593287f5427a9d8465d524195462ffe9", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "ee6423b0284c8039882d39c189c81748593287f5427a9d8465d524195462ffe9", kill_on_drop: false }`
[INFO] [stdout] ee6423b0284c8039882d39c189c81748593287f5427a9d8465d524195462ffe9