[INFO] cloning repository https://github.com/Kay-cwc/rust-distributed-file-system
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/Kay-cwc/rust-distributed-file-system" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKay-cwc%2Frust-distributed-file-system", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKay-cwc%2Frust-distributed-file-system'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d7b2c9a450a5c9dc1c00625c8316f6d114b4e52a
[INFO] checking Kay-cwc/rust-distributed-file-system against master#1f12b9b0fdbe735968ac002792a720f0ba4faca6 for crater-rollup-uwu
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2FKay-cwc%2Frust-distributed-file-system" "/workspace/builds/worker-4-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-4-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/Kay-cwc/rust-distributed-file-system on toolchain 1f12b9b0fdbe735968ac002792a720f0ba4faca6
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/Kay-cwc/rust-distributed-file-system
[INFO] finished tweaking git repo https://github.com/Kay-cwc/rust-distributed-file-system
[INFO] tweaked toml for git repo https://github.com/Kay-cwc/rust-distributed-file-system written to /workspace/builds/worker-4-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/Kay-cwc/rust-distributed-file-system 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" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded rdrand v0.4.0
[INFO] [stderr]   Downloaded rand v0.3.23
[INFO] [stderr]   Downloaded rand_core v0.4.2
[INFO] [stderr]   Downloaded fuchsia-cprng v0.1.1
[INFO] [stderr]   Downloaded rustc-serialize v0.3.25
[INFO] [stderr]   Downloaded rand_core v0.3.1
[INFO] [stderr]   Downloaded gcc v0.3.55
[INFO] [stderr]   Downloaded rand v0.4.6
[INFO] [stderr]   Downloaded rust-crypto v0.2.36
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 377b2c298e32cf6f3ae39f4bd740f717f7844f47f1abffdeee1104a601bda0be
[INFO] running `Command { std: "docker" "start" "-a" "377b2c298e32cf6f3ae39f4bd740f717f7844f47f1abffdeee1104a601bda0be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "377b2c298e32cf6f3ae39f4bd740f717f7844f47f1abffdeee1104a601bda0be", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "377b2c298e32cf6f3ae39f4bd740f717f7844f47f1abffdeee1104a601bda0be", kill_on_drop: false }`
[INFO] [stdout] 377b2c298e32cf6f3ae39f4bd740f717f7844f47f1abffdeee1104a601bda0be
[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@sha256:923055f121b5182466d55868a8b05e67af8ba4a3a3f6bad814e953ca3cd3ac2a" "/opt/rustwide/cargo-home/bin/cargo" "+1f12b9b0fdbe735968ac002792a720f0ba4faca6" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] cc42d29846311def8288eefd8c424e5994726dea62c0d50eb1f6a0c54b34afbc
[INFO] running `Command { std: "docker" "start" "-a" "cc42d29846311def8288eefd8c424e5994726dea62c0d50eb1f6a0c54b34afbc", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.158
[INFO] [stderr]    Compiling gcc v0.3.55
[INFO] [stderr]     Checking rustc-serialize v0.3.25
[INFO] [stderr]    Compiling rust-crypto v0.2.36
[INFO] [stderr]     Checking rand v0.4.6
[INFO] [stderr]     Checking time v0.1.45
[INFO] [stderr]     Checking rand v0.3.23
[INFO] [stderr]     Checking rust-distributed-file v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `TryReserveError`
[INFO] [stdout]  --> src/transport/tcp.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, TryReserveError};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryRecvError`
[INFO] [stdout]  --> src/transport/tcp.rs:3:61
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::mpsc::{channel, Receiver, RecvError, Sender, TryRecvError};
[INFO] [stdout]   |                                                             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryReserveError`
[INFO] [stdout]  --> src/transport/tcp.rs:1:33
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::collections::{HashMap, TryReserveError};
[INFO] [stdout]   |                                 ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `TryRecvError`
[INFO] [stdout]  --> src/transport/tcp.rs:3:61
[INFO] [stdout]   |
[INFO] [stdout] 3 | use std::sync::mpsc::{channel, Receiver, RecvError, Sender, TryRecvError};
[INFO] [stdout]   |                                                             ^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `outbound` is never read
[INFO] [stdout]   --> src/transport/tcp.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct TCPPeer {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 27 |     outbound: bool,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `peers` is never read
[INFO] [stdout]   --> src/transport/tcp.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub struct TCPTransport {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 72 |     peers: Mutex<HashMap<SocketAddr, TCPPeer>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `outbound` is never read
[INFO] [stdout]   --> src/transport/tcp.rs:27:5
[INFO] [stdout]    |
[INFO] [stdout] 18 | pub struct TCPPeer {
[INFO] [stdout]    |            ------- field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 27 |     outbound: bool,
[INFO] [stdout]    |     ^^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: field `peers` is never read
[INFO] [stdout]   --> src/transport/tcp.rs:72:5
[INFO] [stdout]    |
[INFO] [stdout] 66 | pub struct TCPTransport {
[INFO] [stdout]    |            ------------ field in this struct
[INFO] [stdout] ...
[INFO] [stdout] 72 |     peers: Mutex<HashMap<SocketAddr, TCPPeer>>,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.31s
[INFO] running `Command { std: "docker" "inspect" "cc42d29846311def8288eefd8c424e5994726dea62c0d50eb1f6a0c54b34afbc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cc42d29846311def8288eefd8c424e5994726dea62c0d50eb1f6a0c54b34afbc", kill_on_drop: false }`
[INFO] [stdout] cc42d29846311def8288eefd8c424e5994726dea62c0d50eb1f6a0c54b34afbc