[INFO] cloning repository https://github.com/hgfkeep/rust-std-network
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hgfkeep/rust-std-network" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhgfkeep%2Frust-std-network", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhgfkeep%2Frust-std-network'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 9631df3643300e8b054780916ed5e2565c918e3d
[INFO] checking hgfkeep/rust-std-network against 1.55.0 for beta-1.56-3
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhgfkeep%2Frust-std-network" "/workspace/builds/worker-0/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-0/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hgfkeep/rust-std-network on toolchain 1.55.0
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hgfkeep/rust-std-network
[INFO] finished tweaking git repo https://github.com/hgfkeep/rust-std-network
[INFO] tweaked toml for git repo https://github.com/hgfkeep/rust-std-network written to /workspace/builds/worker-0/source/Cargo.toml
[INFO] crate git repo https://github.com/hgfkeep/rust-std-network already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+1.55.0" "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] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded winapi-util v0.1.4
[INFO] [stderr]   Downloaded hermit-abi v0.1.10
[INFO] [stderr]   Downloaded dns-lookup v1.0.1
[INFO] [stderr]   Downloaded regex v1.3.6
[INFO] [stderr]   Downloaded lexical-core v0.6.7
[INFO] [stderr]   Downloaded serde_test v1.0.106
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 00f5c6a08823ba3fcb121d193ef0c7fa8cb394640a1f3488ca70d93c00720afa
[INFO] running `Command { std: "docker" "start" "-a" "00f5c6a08823ba3fcb121d193ef0c7fa8cb394640a1f3488ca70d93c00720afa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "00f5c6a08823ba3fcb121d193ef0c7fa8cb394640a1f3488ca70d93c00720afa", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "00f5c6a08823ba3fcb121d193ef0c7fa8cb394640a1f3488ca70d93c00720afa", kill_on_drop: false }`
[INFO] [stdout] 00f5c6a08823ba3fcb121d193ef0c7fa8cb394640a1f3488ca70d93c00720afa
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0/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:a89201d6b5b9fd45c15d5952ece0a0129e7e80cb26ec023fd59cf09bc26f1604" "/opt/rustwide/cargo-home/bin/cargo" "+1.55.0" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 486ac6eb2a39715e0a031337948db302704492d18d939784f599a4d063f08433
[INFO] running `Command { std: "docker" "start" "-a" "486ac6eb2a39715e0a031337948db302704492d18d939784f599a4d063f08433", kill_on_drop: false }`
[INFO] [stderr]     Blocking waiting for file lock on package cache
[INFO] [stderr]    Compiling ryu v1.0.3
[INFO] [stderr]    Compiling libc v0.2.68
[INFO] [stderr]    Compiling serde v1.0.106
[INFO] [stderr]    Compiling proc-macro2 v1.0.10
[INFO] [stderr]    Compiling syn v1.0.17
[INFO] [stderr]     Checking itoa v0.4.5
[INFO] [stderr]     Checking regex-syntax v0.6.17
[INFO] [stderr]     Checking echo v0.1.0 (/opt/rustwide/workdir/echo)
[INFO] [stderr]     Checking udp-echo v0.1.0 (/opt/rustwide/workdir/udp-echo)
[INFO] [stderr]     Checking udp-echo-client v0.1.0 (/opt/rustwide/workdir/udp-echo-client)
[INFO] [stderr]     Checking ipaddr v0.1.0 (/opt/rustwide/workdir/ipaddr)
[INFO] [stderr]     Checking echo-client v0.1.0 (/opt/rustwide/workdir/echo-client)
[INFO] [stderr]     Checking simple_dns v0.1.0 (/opt/rustwide/workdir/simple_dns)
[INFO] [stderr]     Checking boardcast v0.1.0 (/opt/rustwide/workdir/boardcast)
[INFO] [stderr]     Checking thread_local v1.0.1
[INFO] [stderr]    Compiling nom v5.1.1
[INFO] [stderr]     Checking aho-corasick v0.7.10
[INFO] [stderr]    Compiling lexical-core v0.6.7
[INFO] [stdout] warning: unused import: `IpAddr`
[INFO] [stdout]  --> boardcast/src/main.rs:2:37
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::net::{Ipv4Addr, UdpSocket, IpAddr};
[INFO] [stdout]   |                                     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> ipaddr/src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(ip)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0554]: `#![feature]` may not be used on the stable release channel
[INFO] [stdout]  --> ipaddr/src/main.rs:1:1
[INFO] [stdout]   |
[INFO] [stdout] 1 | #![feature(ip)]
[INFO] [stdout]   | ^^^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `Result`
[INFO] [stdout]  --> echo-client/src/main.rs:1:41
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{self, BufRead, BufReader, Result, Write};
[INFO] [stdout]   |                                         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ipaddr` due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] warning: unused import: `Result`
[INFO] [stdout]  --> echo-client/src/main.rs:1:41
[INFO] [stdout]   |
[INFO] [stdout] 1 | use std::io::{self, BufRead, BufReader, Result, Write};
[INFO] [stdout]   |                                         ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `IpAddr`
[INFO] [stdout]  --> boardcast/src/main.rs:2:37
[INFO] [stdout]   |
[INFO] [stdout] 2 | use std::net::{Ipv4Addr, UdpSocket, IpAddr};
[INFO] [stdout]   |                                     ^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0554`.
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 1 warning emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: build failed
[INFO] running `Command { std: "docker" "inspect" "486ac6eb2a39715e0a031337948db302704492d18d939784f599a4d063f08433", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "486ac6eb2a39715e0a031337948db302704492d18d939784f599a4d063f08433", kill_on_drop: false }`
[INFO] [stdout] 486ac6eb2a39715e0a031337948db302704492d18d939784f599a4d063f08433
