[INFO] cloning repository https://github.com/fabracht/ice
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/fabracht/ice" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffabracht%2Fice", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffabracht%2Fice'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] b9952128e9f9f8c9e726f231a29572ebdf6640d1
[INFO] checking fabracht/ice against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Ffabracht%2Fice" "/workspace/builds/worker-1-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/fabracht/ice on toolchain ceab6128fa48a616bfd3e3adf4bc80133b8ee223
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/fabracht/ice
[INFO] finished tweaking git repo https://github.com/fabracht/ice
[INFO] tweaked toml for git repo https://github.com/fabracht/ice written to /workspace/builds/worker-1-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/fabracht/ice 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" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded waitgroup v0.1.2
[INFO] [stderr]   Downloaded webrtc-mdns v0.4.2
[INFO] [stderr]   Downloaded turn v0.5.4
[INFO] [stderr]   Downloaded webrtc-util v0.5.3
[INFO] [stderr]   Downloaded clap v3.1.5
[INFO] [stderr]   Downloaded stun v0.4.2
[INFO] [stderr]   Downloaded webrtc-ice v0.6.6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] db0f58b5f8a2d2a7e04d82fa5b5e48435956838c3d4a68dc47989387c36d9c2e
[INFO] running `Command { std: "docker" "start" "-a" "db0f58b5f8a2d2a7e04d82fa5b5e48435956838c3d4a68dc47989387c36d9c2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db0f58b5f8a2d2a7e04d82fa5b5e48435956838c3d4a68dc47989387c36d9c2e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db0f58b5f8a2d2a7e04d82fa5b5e48435956838c3d4a68dc47989387c36d9c2e", kill_on_drop: false }`
[INFO] [stdout] db0f58b5f8a2d2a7e04d82fa5b5e48435956838c3d4a68dc47989387c36d9c2e
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:2788e3201cd34a07e3172128adcd8b3090168a8e3bcc40d7c032b9dda1df7d1c" "/opt/rustwide/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 72a9091b05c1feb44c3fb45ed93c175e9115596a67458337cc461310323b22e0
[INFO] running `Command { std: "docker" "start" "-a" "72a9091b05c1feb44c3fb45ed93c175e9115596a67458337cc461310323b22e0", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.119
[INFO] [stderr]    Compiling syn v1.0.86
[INFO] [stderr]    Compiling log v0.4.14
[INFO] [stderr]    Compiling parking_lot_core v0.9.1
[INFO] [stderr]    Compiling proc-macro2 v1.0.36
[INFO] [stderr]     Checking lock_api v0.4.6
[INFO] [stderr]     Checking instant v0.1.12
[INFO] [stderr]    Compiling futures-core v0.3.21
[INFO] [stderr]    Compiling webrtc-util v0.5.3
[INFO] [stderr]    Compiling indexmap v1.8.0
[INFO] [stderr]    Compiling ring v0.16.20
[INFO] [stderr]     Checking crypto-common v0.1.3
[INFO] [stderr]    Compiling futures-task v0.3.21
[INFO] [stderr]    Compiling futures-util v0.3.21
[INFO] [stderr]     Checking crc-catalog v1.1.1
[INFO] [stderr]     Checking http v0.2.6
[INFO] [stderr]     Checking url v2.2.2
[INFO] [stderr]     Checking crc v2.1.0
[INFO] [stderr]     Checking digest v0.10.3
[INFO] [stderr]     Checking tracing-core v0.1.22
[INFO] [stderr]    Compiling futures-channel v0.3.21
[INFO] [stderr]     Checking md-5 v0.10.1
[INFO] [stderr]    Compiling httparse v1.6.0
[INFO] [stderr]     Checking futures-sink v0.3.21
[INFO] [stderr]     Checking atomic-waker v1.0.0
[INFO] [stderr]     Checking regex-syntax v0.6.25
[INFO] [stderr]     Checking humantime v2.1.0
[INFO] [stderr]     Checking waitgroup v0.1.2
[INFO] [stderr]     Checking want v0.3.0
[INFO] [stderr]    Compiling quote v1.0.15
[INFO] [stderr]     Checking tracing v0.1.31
[INFO] [stderr]     Checking regex v1.5.4
[INFO] [stderr]     Checking num_cpus v1.13.1
[INFO] [stderr]     Checking getrandom v0.2.5
[INFO] [stderr]     Checking signal-hook-registry v1.4.0
[INFO] [stderr]     Checking mio v0.8.0
[INFO] [stderr]     Checking socket2 v0.4.4
[INFO] [stderr]     Checking parking_lot_core v0.8.5
[INFO] [stderr]     Checking nix v0.23.1
[INFO] [stderr]     Checking atty v0.2.14
[INFO] [stderr]     Checking clap v3.1.5
[INFO] [stderr]     Checking http-body v0.4.4
[INFO] [stderr]     Checking rand_core v0.6.3
[INFO] [stderr]     Checking uuid v0.8.2
[INFO] [stderr]     Checking parking_lot v0.12.0
[INFO] [stderr]     Checking parking_lot v0.11.2
[INFO] [stderr]     Checking rand_chacha v0.3.1
[INFO] [stderr]     Checking rand v0.8.5
[INFO] [stderr]     Checking env_logger v0.9.0
[INFO] [stderr]    Compiling tokio-macros v1.7.0
[INFO] [stderr]    Compiling thiserror-impl v1.0.30
[INFO] [stderr]    Compiling async-trait v0.1.52
[INFO] [stderr]     Checking tokio v1.17.0
[INFO] [stderr]     Checking thiserror v1.0.30
[INFO] [stderr]     Checking tokio-util v0.6.9
[INFO] [stderr]     Checking h2 v0.3.11
[INFO] [stderr]     Checking stun v0.4.2
[INFO] [stderr]     Checking webrtc-mdns v0.4.2
[INFO] [stderr]     Checking turn v0.5.4
[INFO] [stderr]     Checking hyper v0.14.17
[INFO] [stderr]     Checking webrtc-ice v0.6.6
[INFO] [stderr]     Checking ice v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `App`
[INFO] [stdout]  --> src/main.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use clap::{App, AppSettings, Arg, Command};
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `App`
[INFO] [stdout]  --> src/main.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use clap::{App, AppSettings, Arg, Command};
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `clap::App`: Replaced with `Command`
[INFO] [stdout]  --> src/main.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use clap::{App, AppSettings, Arg, Command};
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: use of deprecated struct `clap::App`: Replaced with `Command`
[INFO] [stdout]  --> src/main.rs:7:12
[INFO] [stdout]   |
[INFO] [stdout] 7 | use clap::{App, AppSettings, Arg, Command};
[INFO] [stdout]   |            ^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(deprecated)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ClientConnector` is never constructed
[INFO] [stdout]  --> src/client.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct ClientConnector {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/client.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl ClientConnector {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: struct `ClientConnector` is never constructed
[INFO] [stdout]  --> src/client.rs:5:8
[INFO] [stdout]   |
[INFO] [stdout] 5 | struct ClientConnector {
[INFO] [stdout]   |        ^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(dead_code)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: associated function `new` is never used
[INFO] [stdout]   --> src/client.rs:10:12
[INFO] [stdout]    |
[INFO] [stdout] 9  | impl ClientConnector {
[INFO] [stdout]    | -------------------- associated function in this implementation
[INFO] [stdout] 10 |     pub fn new() -> Self {
[INFO] [stdout]    |            ^^^
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: 4 warnings emitted
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 10.52s
[INFO] running `Command { std: "docker" "inspect" "72a9091b05c1feb44c3fb45ed93c175e9115596a67458337cc461310323b22e0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "72a9091b05c1feb44c3fb45ed93c175e9115596a67458337cc461310323b22e0", kill_on_drop: false }`
[INFO] [stdout] 72a9091b05c1feb44c3fb45ed93c175e9115596a67458337cc461310323b22e0