[INFO] cloning repository https://github.com/wradley/rust-virtual-network
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/wradley/rust-virtual-network" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwradley%2Frust-virtual-network", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwradley%2Frust-virtual-network'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 3e45845eaf6deea2048ddc530d2a0c3c72787c00
[INFO] checking wradley/rust-virtual-network against try#3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f for pr-87248
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fwradley%2Frust-virtual-network" "/workspace/builds/worker-6/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/wradley/rust-virtual-network on toolchain 3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/wradley/rust-virtual-network
[INFO] finished tweaking git repo https://github.com/wradley/rust-virtual-network
[INFO] tweaked toml for git repo https://github.com/wradley/rust-virtual-network written to /workspace/builds/worker-6/source/Cargo.toml
[INFO] crate git repo https://github.com/wradley/rust-virtual-network already has a lockfile, it will not be regenerated
[INFO] running `Command { std: "/workspace/cargo-home/bin/cargo" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] cb316b2fcfd99648a1bae8ee06d4c4b259fd932181fecbae36421e1438bfcb2c
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "cb316b2fcfd99648a1bae8ee06d4c4b259fd932181fecbae36421e1438bfcb2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "cb316b2fcfd99648a1bae8ee06d4c4b259fd932181fecbae36421e1438bfcb2c", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cb316b2fcfd99648a1bae8ee06d4c4b259fd932181fecbae36421e1438bfcb2c", kill_on_drop: false }`
[INFO] [stdout] cb316b2fcfd99648a1bae8ee06d4c4b259fd932181fecbae36421e1438bfcb2c
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6/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" "+3e59a8c2f14152ccc92a6c079f592dc2dc6fa93f" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d1b9706e35376b5bde1cbd857e3370cac96515a8551bd24b342591a2488f42fd
[INFO] [stderr] WARNING: Your kernel does not support swap limit capabilities or the cgroup is not mounted. Memory limited without swap.
[INFO] running `Command { std: "docker" "start" "-a" "d1b9706e35376b5bde1cbd857e3370cac96515a8551bd24b342591a2488f42fd", kill_on_drop: false }`
[INFO] [stderr]     Checking v_net v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: variant is never constructed: `HTTP0_9`
[INFO] [stdout]  --> src/http_version.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     HTTP0_9,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `HTTP1_0`
[INFO] [stdout]  --> src/http_version.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     HTTP1_0,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `HTTP2_0`
[INFO] [stdout]  --> src/http_version.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     HTTP2_0
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `HEAD`
[INFO] [stdout]  --> src/http_request.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     HEAD,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `POST`
[INFO] [stdout]  --> src/http_request.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     POST,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PUT`
[INFO] [stdout]   --> src/http_request.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     PUT,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DELETE`
[INFO] [stdout]   --> src/http_request.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     DELETE,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `TRACE`
[INFO] [stdout]   --> src/http_request.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     TRACE,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `OPTIONS`
[INFO] [stdout]   --> src/http_request.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     OPTIONS,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `CONNECT`
[INFO] [stdout]   --> src/http_request.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     CONNECT,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PATCH`
[INFO] [stdout]   --> src/http_request.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     PATCH
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `to_byte_slice`
[INFO] [stdout]  --> src/serializable.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub unsafe fn to_byte_slice<T>(data: &T) -> &[u8] {
[INFO] [stdout]   |               ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `to_bytes`
[INFO] [stdout]  --> src/serializable.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn to_bytes<T>(data: &T) -> Vec<u8> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `HTTP0_9`
[INFO] [stdout]  --> src/http_version.rs:2:5
[INFO] [stdout]   |
[INFO] [stdout] 2 |     HTTP0_9,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `HTTP1_0`
[INFO] [stdout]  --> src/http_version.rs:3:5
[INFO] [stdout]   |
[INFO] [stdout] 3 |     HTTP1_0,
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `HTTP2_0`
[INFO] [stdout]  --> src/http_version.rs:5:5
[INFO] [stdout]   |
[INFO] [stdout] 5 |     HTTP2_0
[INFO] [stdout]   |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `HEAD`
[INFO] [stdout]  --> src/http_request.rs:8:5
[INFO] [stdout]   |
[INFO] [stdout] 8 |     HEAD,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `POST`
[INFO] [stdout]  --> src/http_request.rs:9:5
[INFO] [stdout]   |
[INFO] [stdout] 9 |     POST,
[INFO] [stdout]   |     ^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PUT`
[INFO] [stdout]   --> src/http_request.rs:10:5
[INFO] [stdout]    |
[INFO] [stdout] 10 |     PUT,
[INFO] [stdout]    |     ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `DELETE`
[INFO] [stdout]   --> src/http_request.rs:11:5
[INFO] [stdout]    |
[INFO] [stdout] 11 |     DELETE,
[INFO] [stdout]    |     ^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `TRACE`
[INFO] [stdout]   --> src/http_request.rs:12:5
[INFO] [stdout]    |
[INFO] [stdout] 12 |     TRACE,
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `OPTIONS`
[INFO] [stdout]   --> src/http_request.rs:13:5
[INFO] [stdout]    |
[INFO] [stdout] 13 |     OPTIONS,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `CONNECT`
[INFO] [stdout]   --> src/http_request.rs:14:5
[INFO] [stdout]    |
[INFO] [stdout] 14 |     CONNECT,
[INFO] [stdout]    |     ^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: variant is never constructed: `PATCH`
[INFO] [stdout]   --> src/http_request.rs:15:5
[INFO] [stdout]    |
[INFO] [stdout] 15 |     PATCH
[INFO] [stdout]    |     ^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `to_byte_slice`
[INFO] [stdout]  --> src/serializable.rs:2:15
[INFO] [stdout]   |
[INFO] [stdout] 2 | pub unsafe fn to_byte_slice<T>(data: &T) -> &[u8] {
[INFO] [stdout]   |               ^^^^^^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: function is never used: `to_bytes`
[INFO] [stdout]  --> src/serializable.rs:9:8
[INFO] [stdout]   |
[INFO] [stdout] 9 | pub fn to_bytes<T>(data: &T) -> Vec<u8> {
[INFO] [stdout]   |        ^^^^^^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 13 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished dev [unoptimized + debuginfo] target(s) in 0.32s
[INFO] running `Command { std: "docker" "inspect" "d1b9706e35376b5bde1cbd857e3370cac96515a8551bd24b342591a2488f42fd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d1b9706e35376b5bde1cbd857e3370cac96515a8551bd24b342591a2488f42fd", kill_on_drop: false }`
[INFO] [stdout] d1b9706e35376b5bde1cbd857e3370cac96515a8551bd24b342591a2488f42fd