[INFO] cloning repository https://github.com/hosted-fornet/websocket_ping_pong
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/hosted-fornet/websocket_ping_pong" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhosted-fornet%2Fwebsocket_ping_pong", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhosted-fornet%2Fwebsocket_ping_pong'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] d045ba820c0a30ecfdb749fbac2ea01b543db9f4
[INFO] checking hosted-fornet/websocket_ping_pong against master#385fa9d845dd326c6bbfd58c22244215e431948a for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhosted-fornet%2Fwebsocket_ping_pong" "/workspace/builds/worker-6-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hosted-fornet/websocket_ping_pong on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hosted-fornet/websocket_ping_pong
[INFO] finished tweaking git repo https://github.com/hosted-fornet/websocket_ping_pong
[INFO] tweaked toml for git repo https://github.com/hosted-fornet/websocket_ping_pong written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/hosted-fornet/websocket_ping_pong 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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7c6710cb4794cdd9200170197f1d351463766b0de43e1cc9f7b0c4b00e783246
[INFO] running `Command { std: "docker" "start" "-a" "7c6710cb4794cdd9200170197f1d351463766b0de43e1cc9f7b0c4b00e783246", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7c6710cb4794cdd9200170197f1d351463766b0de43e1cc9f7b0c4b00e783246", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7c6710cb4794cdd9200170197f1d351463766b0de43e1cc9f7b0c4b00e783246", kill_on_drop: false }`
[INFO] [stdout] 7c6710cb4794cdd9200170197f1d351463766b0de43e1cc9f7b0c4b00e783246
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] a62ff0fcc1f5dddd68a5df64d43b11815ffecd86a256f12bb3bec5004724aa52
[INFO] running `Command { std: "docker" "start" "-a" "a62ff0fcc1f5dddd68a5df64d43b11815ffecd86a256f12bb3bec5004724aa52", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking cpufeatures v0.2.12
[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking data-encoding v2.5.0
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]     Checking tokio v1.35.1
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking tungstenite v0.21.0
[INFO] [stderr]     Checking tokio-tungstenite v0.21.0
[INFO] [stderr]     Checking websocket_ping_pong v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `tokio::net::TcpStream`
[INFO] [stdout]  --> src/bin/client.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tokio::net::TcpStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::net::TcpStream`
[INFO] [stdout]  --> src/bin/client.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tokio::net::TcpStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[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]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 19.37s
[INFO] running `Command { std: "docker" "inspect" "a62ff0fcc1f5dddd68a5df64d43b11815ffecd86a256f12bb3bec5004724aa52", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a62ff0fcc1f5dddd68a5df64d43b11815ffecd86a256f12bb3bec5004724aa52", kill_on_drop: false }`
[INFO] [stdout] a62ff0fcc1f5dddd68a5df64d43b11815ffecd86a256f12bb3bec5004724aa52
[INFO] checking hosted-fornet/websocket_ping_pong against try#2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2 for never-type-fallback-to-never
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fhosted-fornet%2Fwebsocket_ping_pong" "/workspace/builds/worker-6-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-6-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/hosted-fornet/websocket_ping_pong on toolchain 2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking git repo https://github.com/hosted-fornet/websocket_ping_pong
[INFO] finished tweaking git repo https://github.com/hosted-fornet/websocket_ping_pong
[INFO] tweaked toml for git repo https://github.com/hosted-fornet/websocket_ping_pong written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/hosted-fornet/websocket_ping_pong 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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 8896e9831706a98a3ea2126638dd034f6b871f581c112f4e33715c584e097188
[INFO] running `Command { std: "docker" "start" "-a" "8896e9831706a98a3ea2126638dd034f6b871f581c112f4e33715c584e097188", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "8896e9831706a98a3ea2126638dd034f6b871f581c112f4e33715c584e097188", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "8896e9831706a98a3ea2126638dd034f6b871f581c112f4e33715c584e097188", kill_on_drop: false }`
[INFO] [stdout] 8896e9831706a98a3ea2126638dd034f6b871f581c112f4e33715c584e097188
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/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" "+2d84f2737f3bd9ebfcb07f75aa198d6cf7c715d2" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] f61ed297966d81ab51afff4d9a235b320b4e0b03ad703ef00626e40e62577764
[INFO] running `Command { std: "docker" "start" "-a" "f61ed297966d81ab51afff4d9a235b320b4e0b03ad703ef00626e40e62577764", kill_on_drop: false }`
[INFO] [stderr]    Compiling typenum v1.17.0
[INFO] [stderr]    Compiling generic-array v0.14.7
[INFO] [stderr]    Compiling thiserror v1.0.56
[INFO] [stderr]    Compiling syn v2.0.48
[INFO] [stderr]     Checking parking_lot_core v0.9.9
[INFO] [stderr]     Checking cpufeatures v0.2.12
[INFO] [stderr]     Checking utf-8 v0.7.6
[INFO] [stderr]     Checking byteorder v1.5.0
[INFO] [stderr]     Checking futures-sink v0.3.30
[INFO] [stderr]     Checking data-encoding v2.5.0
[INFO] [stderr]     Checking futures-core v0.3.30
[INFO] [stderr]     Checking parking_lot v0.12.1
[INFO] [stderr]     Checking crypto-common v0.1.6
[INFO] [stderr]     Checking block-buffer v0.10.4
[INFO] [stderr]     Checking digest v0.10.7
[INFO] [stderr]     Checking sha1 v0.10.6
[INFO] [stderr]    Compiling thiserror-impl v1.0.56
[INFO] [stderr]    Compiling tokio-macros v2.2.0
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]     Checking tokio v1.35.1
[INFO] [stderr]     Checking tungstenite v0.21.0
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking tokio-tungstenite v0.21.0
[INFO] [stderr]     Checking websocket_ping_pong v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: unused import: `tokio::net::TcpStream`
[INFO] [stdout]  --> src/bin/client.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tokio::net::TcpStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: unused import: `tokio::net::TcpStream`
[INFO] [stdout]  --> src/bin/client.rs:1:5
[INFO] [stdout]   |
[INFO] [stdout] 1 | use tokio::net::TcpStream;
[INFO] [stdout]   |     ^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]   |
[INFO] [stdout]   = note: `#[warn(unused_imports)]` on by default
[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]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 20.49s
[INFO] running `Command { std: "docker" "inspect" "f61ed297966d81ab51afff4d9a235b320b4e0b03ad703ef00626e40e62577764", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f61ed297966d81ab51afff4d9a235b320b4e0b03ad703ef00626e40e62577764", kill_on_drop: false }`
[INFO] [stdout] f61ed297966d81ab51afff4d9a235b320b4e0b03ad703ef00626e40e62577764