[INFO] cloning repository https://github.com/sirkibsirkib/mc_dummy
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/sirkibsirkib/mc_dummy" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsirkibsirkib%2Fmc_dummy", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsirkibsirkib%2Fmc_dummy'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 482714e31f7071909367e56c7fe5600b272a8aa3
[INFO] testing sirkibsirkib/mc_dummy against 1.60.0 for beta-1.61-1
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsirkibsirkib%2Fmc_dummy" "/workspace/builds/worker-11/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-11/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sirkibsirkib/mc_dummy on toolchain 1.60.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/sirkibsirkib/mc_dummy
[INFO] finished tweaking git repo https://github.com/sirkibsirkib/mc_dummy
[INFO] tweaked toml for git repo https://github.com/sirkibsirkib/mc_dummy written to /workspace/builds/worker-11/source/Cargo.toml
[INFO] crate git repo https://github.com/sirkibsirkib/mc_dummy already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.60.0" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+1.60.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 02d4d4d780a23db62184475be3c383b963bbd8a53d6653b9b1d54a77b95f051d
[INFO] running `Command { std: "docker" "start" "-a" "02d4d4d780a23db62184475be3c383b963bbd8a53d6653b9b1d54a77b95f051d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "02d4d4d780a23db62184475be3c383b963bbd8a53d6653b9b1d54a77b95f051d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "02d4d4d780a23db62184475be3c383b963bbd8a53d6653b9b1d54a77b95f051d", kill_on_drop: false }`
[INFO] [stdout] 02d4d4d780a23db62184475be3c383b963bbd8a53d6653b9b1d54a77b95f051d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+1.60.0" "build" "--frozen" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 83f4b7f02fdb6e264dd2630fe0b7f77132f3e8ecac4d4044e0935093c83fdaa3
[INFO] running `Command { std: "docker" "start" "-a" "83f4b7f02fdb6e264dd2630fe0b7f77132f3e8ecac4d4044e0935093c83fdaa3", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.42
[INFO] [stderr]    Compiling bitflags v1.0.3
[INFO] [stderr]    Compiling byteorder v1.2.3
[INFO] [stderr]    Compiling hex v0.3.2
[INFO] [stderr]    Compiling textwrap v0.9.0
[INFO] [stderr]    Compiling atty v0.2.10
[INFO] [stderr]    Compiling clap v2.31.2
[INFO] [stderr]    Compiling mc_dummy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `WritePlusPlus`
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     WritePlusPlus,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Position`
[INFO] [stdout]   --> src/main.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     Position,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `PayloadReader`
[INFO] [stdout]   --> src/main.rs:65:1
[INFO] [stdout]    |
[INFO] [stdout] 65 | type PayloadReader<'a> = BufReader<&'a [u8]>;
[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: `move_rel`
[INFO] [stdout]    --> src/main.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn move_rel(&mut self, x: f64, y: f64, z: f64) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Clientward`
[INFO] [stdout]   --> src/mc_channel.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub enum Clientward {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Status`
[INFO] [stdout]   --> src/mc_channel.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     Login, Status,
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `CommandsOnly`
[INFO] [stdout]   --> src/mc_channel.rs:48:11
[INFO] [stdout]    |
[INFO] [stdout] 48 |     Enabled, CommandsOnly, Hidden
[INFO] [stdout]    |              ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Hidden`
[INFO] [stdout]   --> src/mc_channel.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |     Enabled, CommandsOnly, Hidden
[INFO] [stdout]    |                            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Left`
[INFO] [stdout]   --> src/mc_channel.rs:51:2
[INFO] [stdout]    |
[INFO] [stdout] 51 |     Left, Right,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/main.rs:115:37
[INFO] [stdout]     |
[INFO] [stdout] 115 |             while len > buf.len() { &buf.push(0u8); }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 115 |             while len > buf.len() { let _ = &buf.push(0u8); }
[INFO] [stdout]     |                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/mc_channel.rs:220:6
[INFO] [stdout]     |
[INFO] [stdout] 220 |         self.write_f64::<BigEndian>(x);
[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/mc_channel.rs:224:6
[INFO] [stdout]     |
[INFO] [stdout] 224 |         self.write_f32::<BigEndian>(x);
[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: this arithmetic operation will overflow
[INFO] [stdout]    --> src/mc_channel.rs:169:21
[INFO] [stdout]     |
[INFO] [stdout] 169 |             x = x + (1 << 32);
[INFO] [stdout]     |                     ^^^^^^^^^ attempt to shift left by `32_i32`, which would overflow
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(arithmetic_overflow)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: this arithmetic operation will overflow
[INFO] [stdout]    --> src/mc_channel.rs:267:29
[INFO] [stdout]     |
[INFO] [stdout] 267 |             total = total - (1 << 32);
[INFO] [stdout]     |                             ^^^^^^^^^ attempt to shift left by `32_i32`, which would overflow
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 14 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 29.43s
[INFO] running `Command { std: "docker" "inspect" "83f4b7f02fdb6e264dd2630fe0b7f77132f3e8ecac4d4044e0935093c83fdaa3", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "83f4b7f02fdb6e264dd2630fe0b7f77132f3e8ecac4d4044e0935093c83fdaa3", kill_on_drop: false }`
[INFO] [stdout] 83f4b7f02fdb6e264dd2630fe0b7f77132f3e8ecac4d4044e0935093c83fdaa3
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+1.60.0" "test" "--frozen" "--no-run" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 4b7694957e92915a2cb07364ed18b73966c00a043ec3b4d579d1917babc32ad4
[INFO] running `Command { std: "docker" "start" "-a" "4b7694957e92915a2cb07364ed18b73966c00a043ec3b4d579d1917babc32ad4", kill_on_drop: false }`
[INFO] [stderr]    Compiling mc_dummy v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `WritePlusPlus`
[INFO] [stdout]   --> src/main.rs:23:5
[INFO] [stdout]    |
[INFO] [stdout] 23 |     WritePlusPlus,
[INFO] [stdout]    |     ^^^^^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Position`
[INFO] [stdout]   --> src/main.rs:29:5
[INFO] [stdout]    |
[INFO] [stdout] 29 |     Position,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: type alias is never used: `PayloadReader`
[INFO] [stdout]   --> src/main.rs:65:1
[INFO] [stdout]    |
[INFO] [stdout] 65 | type PayloadReader<'a> = BufReader<&'a [u8]>;
[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: `move_rel`
[INFO] [stdout]    --> src/main.rs:102:8
[INFO] [stdout]     |
[INFO] [stdout] 102 |     fn move_rel(&mut self, x: f64, y: f64, z: f64) {
[INFO] [stdout]     |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: enum is never used: `Clientward`
[INFO] [stdout]   --> src/mc_channel.rs:11:10
[INFO] [stdout]    |
[INFO] [stdout] 11 | pub enum Clientward {
[INFO] [stdout]    |          ^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Status`
[INFO] [stdout]   --> src/mc_channel.rs:34:9
[INFO] [stdout]    |
[INFO] [stdout] 34 |     Login, Status,
[INFO] [stdout]    |            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `CommandsOnly`
[INFO] [stdout]   --> src/mc_channel.rs:48:11
[INFO] [stdout]    |
[INFO] [stdout] 48 |     Enabled, CommandsOnly, Hidden
[INFO] [stdout]    |              ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Hidden`
[INFO] [stdout]   --> src/mc_channel.rs:48:25
[INFO] [stdout]    |
[INFO] [stdout] 48 |     Enabled, CommandsOnly, Hidden
[INFO] [stdout]    |                            ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `Left`
[INFO] [stdout]   --> src/mc_channel.rs:51:2
[INFO] [stdout]    |
[INFO] [stdout] 51 |     Left, Right,
[INFO] [stdout]    |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]    --> src/main.rs:115:37
[INFO] [stdout]     |
[INFO] [stdout] 115 |             while len > buf.len() { &buf.push(0u8); }
[INFO] [stdout]     |                                     ^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]     |
[INFO] [stdout]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout] 115 |             while len > buf.len() { let _ = &buf.push(0u8); }
[INFO] [stdout]     |                                     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> src/mc_channel.rs:220:6
[INFO] [stdout]     |
[INFO] [stdout] 220 |         self.write_f64::<BigEndian>(x);
[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/mc_channel.rs:224:6
[INFO] [stdout]     |
[INFO] [stdout] 224 |         self.write_f32::<BigEndian>(x);
[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: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 1.15s
[INFO] running `Command { std: "docker" "inspect" "4b7694957e92915a2cb07364ed18b73966c00a043ec3b4d579d1917babc32ad4", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4b7694957e92915a2cb07364ed18b73966c00a043ec3b4d579d1917babc32ad4", kill_on_drop: false }`
[INFO] [stdout] 4b7694957e92915a2cb07364ed18b73966c00a043ec3b4d579d1917babc32ad4
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-11/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" "+1.60.0" "test" "--frozen", kill_on_drop: false }`
[INFO] [stdout] 14ea835c1e36ed665b62023c763a4205d400e08659461ddc9c71d9bdaaf02fdb
[INFO] running `Command { std: "docker" "start" "-a" "14ea835c1e36ed665b62023c763a4205d400e08659461ddc9c71d9bdaaf02fdb", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr] warning: unused import: `WritePlusPlus`
[INFO] [stderr]   --> src/main.rs:23:5
[INFO] [stderr]    |
[INFO] [stderr] 23 |     WritePlusPlus,
[INFO] [stderr]    |     ^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(unused_imports)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: unused import: `Position`
[INFO] [stderr]   --> src/main.rs:29:5
[INFO] [stderr]    |
[INFO] [stderr] 29 |     Position,
[INFO] [stderr]    |     ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: type alias is never used: `PayloadReader`
[INFO] [stderr]   --> src/main.rs:65:1
[INFO] [stderr]    |
[INFO] [stderr] 65 | type PayloadReader<'a> = BufReader<&'a [u8]>;
[INFO] [stderr]    | ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]    |
[INFO] [stderr]    = note: `#[warn(dead_code)]` on by default
[INFO] [stderr] 
[INFO] [stderr] warning: associated function is never used: `move_rel`
[INFO] [stderr]    --> src/main.rs:102:8
[INFO] [stderr]     |
[INFO] [stderr] 102 |     fn move_rel(&mut self, x: f64, y: f64, z: f64) {
[INFO] [stderr]     |        ^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: enum is never used: `Clientward`
[INFO] [stderr]   --> src/mc_channel.rs:11:10
[INFO] [stderr]    |
[INFO] [stderr] 11 | pub enum Clientward {
[INFO] [stderr]    |          ^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Status`
[INFO] [stderr]   --> src/mc_channel.rs:34:9
[INFO] [stderr]    |
[INFO] [stderr] 34 |     Login, Status,
[INFO] [stderr]    |            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `CommandsOnly`
[INFO] [stderr]   --> src/mc_channel.rs:48:11
[INFO] [stderr]    |
[INFO] [stderr] 48 |     Enabled, CommandsOnly, Hidden
[INFO] [stderr]    |              ^^^^^^^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Hidden`
[INFO] [stderr]   --> src/mc_channel.rs:48:25
[INFO] [stderr]    |
[INFO] [stderr] 48 |     Enabled, CommandsOnly, Hidden
[INFO] [stderr]    |                            ^^^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: variant is never constructed: `Left`
[INFO] [stderr]   --> src/mc_channel.rs:51:2
[INFO] [stderr]    |
[INFO] [stderr] 51 |     Left, Right,
[INFO] [stderr]    |     ^^^^
[INFO] [stderr] 
[INFO] [stderr] warning: unused borrow that must be used
[INFO] [stderr]    --> src/main.rs:115:37
[INFO] [stderr]     |
[INFO] [stderr] 115 |             while len > buf.len() { &buf.push(0u8); }
[INFO] [stderr]     |                                     ^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stderr]     |
[INFO] [stderr]     = note: `#[warn(unused_must_use)]` on by default
[INFO] [stderr] help: use `let _ = ...` to ignore the resulting value
[INFO] [stderr]     |
[INFO] [stderr] 115 |             while len > buf.len() { let _ = &buf.push(0u8); }
[INFO] [stderr]     |                                     +++++++
[INFO] [stderr] 
[INFO] [stderr] warning: unused `Result` that must be used
[INFO] [stderr]    --> src/mc_channel.rs:220:6
[INFO] [stderr]     |
[INFO] [stderr] 220 |         self.write_f64::<BigEndian>(x);
[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/mc_channel.rs:224:6
[INFO] [stderr]     |
[INFO] [stderr] 224 |         self.write_f32::<BigEndian>(x);
[INFO] [stderr]     |         ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stderr]     |
[INFO] [stderr]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stderr] 
[INFO] [stderr] warning: `mc_dummy` (bin "mc_dummy" test) generated 12 warnings
[INFO] [stderr]     Finished test [unoptimized + debuginfo] target(s) in 9.14s
[INFO] [stderr]      Running unittests (/opt/rustwide/target/debug/deps/mc_dummy-1cc12c7ee7cefcdf)
[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" "14ea835c1e36ed665b62023c763a4205d400e08659461ddc9c71d9bdaaf02fdb", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "14ea835c1e36ed665b62023c763a4205d400e08659461ddc9c71d9bdaaf02fdb", kill_on_drop: false }`
[INFO] [stdout] 14ea835c1e36ed665b62023c763a4205d400e08659461ddc9c71d9bdaaf02fdb