[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] checking sirkibsirkib/mc_dummy against master#33fdb797f59421c7bbecaa4588ed5d7a31a9494a for pr-87190-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fsirkibsirkib%2Fmc_dummy" "/workspace/builds/worker-88/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-88/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/sirkibsirkib/mc_dummy on toolchain 33fdb797f59421c7bbecaa4588ed5d7a31a9494a
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "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-88/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" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] d1f64513b77c716ad8553a04c72ae0e39aeb003faceec6136267d6972790b363
[INFO] running `Command { std: "docker" "start" "-a" "d1f64513b77c716ad8553a04c72ae0e39aeb003faceec6136267d6972790b363", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d1f64513b77c716ad8553a04c72ae0e39aeb003faceec6136267d6972790b363", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1f64513b77c716ad8553a04c72ae0e39aeb003faceec6136267d6972790b363", kill_on_drop: false }`
[INFO] [stdout] d1f64513b77c716ad8553a04c72ae0e39aeb003faceec6136267d6972790b363
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-88/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=forbid" "-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@sha256:34b6a614d2c27851fe6cbf88fbd1137609cefab8b10d0615aaeb6fd47975d74e" "/opt/rustwide/cargo-home/bin/cargo" "+33fdb797f59421c7bbecaa4588ed5d7a31a9494a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6e03e1d5b0ca86d3209d9f251f25c24e3a5e44e154d245b44315ff06d65e8888
[INFO] running `Command { std: "docker" "start" "-a" "6e03e1d5b0ca86d3209d9f251f25c24e3a5e44e154d245b44315ff06d65e8888", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]     Checking libc v0.2.42
[INFO] [stderr]     Checking hex v0.3.2
[INFO] [stderr]     Checking byteorder v1.2.3
[INFO] [stderr]     Checking textwrap v0.9.0
[INFO] [stderr]     Checking atty v0.2.10
[INFO] [stderr]     Checking clap v2.31.2
[INFO] [stderr]     Checking 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: 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: 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]    = note: `#[warn(dead_code)]` on by default
[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: 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] 
[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: 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: 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]    = note: `#[warn(dead_code)]` on by default
[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: 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] 
[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: 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] [stdout] warning: 12 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 8.29s
[INFO] running `Command { std: "docker" "inspect" "6e03e1d5b0ca86d3209d9f251f25c24e3a5e44e154d245b44315ff06d65e8888", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e03e1d5b0ca86d3209d9f251f25c24e3a5e44e154d245b44315ff06d65e8888", kill_on_drop: false }`
[INFO] [stdout] 6e03e1d5b0ca86d3209d9f251f25c24e3a5e44e154d245b44315ff06d65e8888