[INFO] cloning repository https://github.com/marior765/LLRC
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/marior765/LLRC" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarior765%2FLLRC", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarior765%2FLLRC'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 553087839483cd3caa28139fea069caecd274e98
[INFO] checking marior765/LLRC against master#bca37a20bd376ce3fd138e7cdee7fe704e0f8814 for pr-139493-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fmarior765%2FLLRC" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/marior765/LLRC
[INFO] finished tweaking git repo https://github.com/marior765/LLRC
[INFO] tweaked toml for git repo https://github.com/marior765/LLRC written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/marior765/LLRC on toolchain bca37a20bd376ce3fd138e7cdee7fe704e0f8814
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/marior765/LLRC already has a lockfile, it will not be regenerated
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tokio-io v0.1.12
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[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 6e1530341e8dc379c6fa4c65dbe3a7fba3d0a1db09c2d9290b9391929deb89ef
[INFO] running `Command { std: "docker" "start" "-a" "6e1530341e8dc379c6fa4c65dbe3a7fba3d0a1db09c2d9290b9391929deb89ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "6e1530341e8dc379c6fa4c65dbe3a7fba3d0a1db09c2d9290b9391929deb89ef", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6e1530341e8dc379c6fa4c65dbe3a7fba3d0a1db09c2d9290b9391929deb89ef", kill_on_drop: false }`
[INFO] [stdout] 6e1530341e8dc379c6fa4c65dbe3a7fba3d0a1db09c2d9290b9391929deb89ef
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-4-tc1/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" "RUSTDOCFLAGS=--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:aa71247004a7fa38d13ec170f48f06cdedf5bc50b2a8645e56ed7e992e6fa513" "/opt/rustwide/cargo-home/bin/cargo" "+bca37a20bd376ce3fd138e7cdee7fe704e0f8814" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 30de1cfaec27c3c418f244bc0060477bd233d710a591c62289d393fe50ebf879
[INFO] running `Command { std: "docker" "start" "-a" "30de1cfaec27c3c418f244bc0060477bd233d710a591c62289d393fe50ebf879", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.54
[INFO] [stderr]     Checking futures v0.1.27
[INFO] [stderr]     Checking log v0.4.6
[INFO] [stderr]    Compiling byteorder v1.3.1
[INFO] [stderr]     Checking slab v0.4.2
[INFO] [stderr]     Checking stable_deref_trait v1.1.1
[INFO] [stderr]     Checking lazycell v1.2.1
[INFO] [stderr]     Checking fnv v1.0.6
[INFO] [stderr]     Checking rand_jitter v0.1.4
[INFO] [stderr]    Compiling parking_lot_core v0.4.0
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[INFO] [stderr]     Checking owning_ref v0.4.0
[INFO] [stderr]     Checking lock_api v0.1.5
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[INFO] [stderr]     Checking rand_os v0.1.3
[INFO] [stderr]     Checking num_cpus v1.10.0
[INFO] [stderr]     Checking net2 v0.2.33
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[INFO] [stderr]     Checking rand v0.6.5
[INFO] [stderr]     Checking mio v0.6.16
[INFO] [stderr]     Checking tokio-executor v0.1.7
[INFO] [stderr]     Checking tokio-io v0.1.12
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[INFO] [stderr]     Checking tokio v0.1.20
[INFO] [stderr]     Checking server v0.1.0 (/opt/rustwide/workdir/server)
[INFO] [stdout] warning: unused imports: `copy` and `write_all`
[INFO] [stdout]  --> server/src/lib.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::io::{copy, write_all, read_exact};
[INFO] [stdout]   |                 ^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> server/src/lib.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         'server: loop {
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `tokio::net::TcpStream::try_clone`: use `split()` instead
[INFO] [stdout]   --> server/src/lib.rs:36:37
[INFO] [stdout]    |
[INFO] [stdout] 36 |                 clients.push(socket.try_clone().expect("failed to clone"));
[INFO] [stdout]    |                                     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused imports: `copy` and `write_all`
[INFO] [stdout]  --> server/src/lib.rs:3:17
[INFO] [stdout]   |
[INFO] [stdout] 3 | use tokio::io::{copy, write_all, read_exact};
[INFO] [stdout]   |                 ^^^^  ^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused label
[INFO] [stdout]   --> server/src/lib.rs:31:9
[INFO] [stdout]    |
[INFO] [stdout] 31 |         'server: loop {
[INFO] [stdout]    |         ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_labels)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> server/src/lib.rs:78:17
[INFO] [stdout]    |
[INFO] [stdout] 78 |             let msg = buff.into_iter().take_while(|&x| x != 0).collect::<Vec<_>>();
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> server/src/lib.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     &client.set_nonblocking(true).expect("failed to initiate non-blocking");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let _ = &client.set_nonblocking(true).expect("failed to initiate non-blocking");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> server/src/lib.rs:74:5
[INFO] [stdout]     |
[INFO] [stdout]  74 | /     TcpStream::from_std(client.try_clone().unwrap(), &handle).and_then(|stream| {
[INFO] [stdout]  75 | |         // thread::spawn(move || loop {
[INFO] [stdout]  76 | |             let mut buff = vec![0; MSG_SIZE];
[INFO] [stdout]  77 | |             read_exact(stream, &mut buff);
[INFO] [stdout] ...   |
[INFO] [stdout] 102 | |         Ok(())
[INFO] [stdout] 103 | |     });
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout]  74 |     let _ = TcpStream::from_std(client.try_clone().unwrap(), &handle).and_then(|stream| {
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated method `tokio::net::TcpStream::try_clone`: use `split()` instead
[INFO] [stdout]   --> server/src/lib.rs:36:37
[INFO] [stdout]    |
[INFO] [stdout] 36 |                 clients.push(socket.try_clone().expect("failed to clone"));
[INFO] [stdout]    |                                     ^^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused variable: `msg`
[INFO] [stdout]   --> server/src/lib.rs:78:17
[INFO] [stdout]    |
[INFO] [stdout] 78 |             let msg = buff.into_iter().take_while(|&x| x != 0).collect::<Vec<_>>();
[INFO] [stdout]    |                 ^^^ help: if this is intentional, prefix it with an underscore: `_msg`
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_variables)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused borrow that must be used
[INFO] [stdout]   --> server/src/lib.rs:68:5
[INFO] [stdout]    |
[INFO] [stdout] 68 |     &client.set_nonblocking(true).expect("failed to initiate non-blocking");
[INFO] [stdout]    |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ the borrow produces a value
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(unused_must_use)]` (part of `#[warn(unused)]`) on by default
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]    |
[INFO] [stdout] 68 |     let _ = &client.set_nonblocking(true).expect("failed to initiate non-blocking");
[INFO] [stdout]    |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused `Result` that must be used
[INFO] [stdout]    --> server/src/lib.rs:74:5
[INFO] [stdout]     |
[INFO] [stdout]  74 | /     TcpStream::from_std(client.try_clone().unwrap(), &handle).and_then(|stream| {
[INFO] [stdout]  75 | |         // thread::spawn(move || loop {
[INFO] [stdout]  76 | |             let mut buff = vec![0; MSG_SIZE];
[INFO] [stdout]  77 | |             read_exact(stream, &mut buff);
[INFO] [stdout] ...   |
[INFO] [stdout] 102 | |         Ok(())
[INFO] [stdout] 103 | |     });
[INFO] [stdout]     | |______^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this `Result` may be an `Err` variant, which should be handled
[INFO] [stdout] help: use `let _ = ...` to ignore the resulting value
[INFO] [stdout]     |
[INFO] [stdout]  74 |     let _ = TcpStream::from_std(client.try_clone().unwrap(), &handle).and_then(|stream| {
[INFO] [stdout]     |     +++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Checking client v0.1.0 (/opt/rustwide/workdir/client)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.98s
[INFO] running `Command { std: "docker" "inspect" "30de1cfaec27c3c418f244bc0060477bd233d710a591c62289d393fe50ebf879", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "30de1cfaec27c3c418f244bc0060477bd233d710a591c62289d393fe50ebf879", kill_on_drop: false }`
[INFO] [stdout] 30de1cfaec27c3c418f244bc0060477bd233d710a591c62289d393fe50ebf879
