[INFO] cloning repository https://github.com/dtynn/libp2p-relay-demo
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dtynn/libp2p-relay-demo" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdtynn%2Flibp2p-relay-demo", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdtynn%2Flibp2p-relay-demo'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 8eb67ee26e7185c0c1d30ef4d43dc8ffd0cdbba1
[INFO] checking dtynn/libp2p-relay-demo against try#4f260f0f20b3133d20cfb50353c0221943af5796+rustflags=-Dunmustuse_in_always_ok for pr-148577
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdtynn%2Flibp2p-relay-demo" "/workspace/builds/worker-1-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-1-tc2/source'...
[INFO] [stderr] done.
[INFO] started tweaking git repo https://github.com/dtynn/libp2p-relay-demo
[INFO] finished tweaking git repo https://github.com/dtynn/libp2p-relay-demo
[INFO] tweaked toml for git repo https://github.com/dtynn/libp2p-relay-demo written to /workspace/builds/worker-1-tc2/source/Cargo.toml
[INFO] validating manifest of git repo https://github.com/dtynn/libp2p-relay-demo on toolchain 4f260f0f20b3133d20cfb50353c0221943af5796
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] crate git repo https://github.com/dtynn/libp2p-relay-demo 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" "+4f260f0f20b3133d20cfb50353c0221943af5796" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 195db77e25040dbc4ec84bf9eed43550e19a67ace98c9a2dcb17bda5dfff1153
[INFO] running `Command { std: "docker" "start" "-a" "195db77e25040dbc4ec84bf9eed43550e19a67ace98c9a2dcb17bda5dfff1153", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "195db77e25040dbc4ec84bf9eed43550e19a67ace98c9a2dcb17bda5dfff1153", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "195db77e25040dbc4ec84bf9eed43550e19a67ace98c9a2dcb17bda5dfff1153", kill_on_drop: false }`
[INFO] [stdout] 195db77e25040dbc4ec84bf9eed43550e19a67ace98c9a2dcb17bda5dfff1153
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-1-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 -Dunmustuse_in_always_ok" "-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@sha256:4848fb76d95f26979359cc7e45710b1dbc8f3acb7aeedee7c460d7702230f228" "/opt/rustwide/cargo-home/bin/cargo" "+4f260f0f20b3133d20cfb50353c0221943af5796" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 52c494b5ebcfec76a64d09d92a5a927561bd21fc9bfe914430f1f77fb2058652
[INFO] running `Command { std: "docker" "start" "-a" "52c494b5ebcfec76a64d09d92a5a927561bd21fc9bfe914430f1f77fb2058652", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.79
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[INFO] [stderr]     Checking libp2p-core v0.41.2
[INFO] [stderr]     Checking libp2p-swarm v0.44.1
[INFO] [stderr]     Checking libp2p-noise v0.44.0
[INFO] [stderr]     Checking libp2p-tcp v0.41.0
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[INFO] [stderr]     Checking libp2p-connection-limits v0.3.1
[INFO] [stderr]     Checking libp2p-ping v0.44.0
[INFO] [stderr]     Checking libp2p-identify v0.44.1
[INFO] [stderr]     Checking libp2p-dcutr v0.11.0
[INFO] [stderr]     Checking libp2p-allow-block-list v0.3.0
[INFO] [stderr]     Checking libp2p-kad v0.45.3
[INFO] [stderr]     Checking libp2p-relay v0.17.1
[INFO] [stderr]     Checking libp2p-autonat v0.12.0
[INFO] [stderr]     Checking libp2p v0.53.2
[INFO] [stderr]     Checking libp2p-relay-demo v0.1.0 (/opt/rustwide/workdir)
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/behaviour/kad.rs:109:12
[INFO] [stdout]     |
[INFO] [stdout] 109 |         if let Either::Left(event) = event {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] warning: irrefutable `if let` pattern
[INFO] [stdout]    --> src/behaviour/kad.rs:109:12
[INFO] [stdout]     |
[INFO] [stdout] 109 |         if let Either::Left(event) = event {
[INFO] [stdout]     |            ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: this pattern will always match, so the `if let` is useless
[INFO] [stdout]     = help: consider replacing the `if let` with a `let`
[INFO] [stdout]     = note: `#[warn(irrefutable_let_patterns)]` on by default
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: this type will no longer be must used: Result<SwarmBuilder<libp2p::builder::phase::provider::Tokio, libp2p::builder::phase::swarm::SwarmPhase<impl libp2p::builder::phase::AuthenticatedMultiplexedTransport, behaviour::Behaviour>>, Infallible>
[INFO] [stdout]    --> src/main.rs:76:21
[INFO] [stdout]     |
[INFO] [stdout]  76 |       let mut swarm = SwarmBuilder::with_existing_identity(key)
[INFO] [stdout]     |  _____________________^
[INFO] [stdout]  77 | |         .with_tokio()
[INFO] [stdout]  78 | |         .with_other_transport(|keypair| {
[INFO] [stdout]  79 | |             let tcp_trans = transport::HolePunchTransport::new(tcp_cfg.clone())
[INFO] [stdout] ...   |
[INFO] [stdout] 118 | |             )),
[INFO] [stdout] 119 | |         })
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libp2p-relay-demo` (bin "libp2p-relay-demo" test) due to 1 previous error; 1 warning emitted
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: this type will no longer be must used: Result<SwarmBuilder<libp2p::builder::phase::provider::Tokio, libp2p::builder::phase::swarm::SwarmPhase<impl libp2p::builder::phase::AuthenticatedMultiplexedTransport, behaviour::Behaviour>>, Infallible>
[INFO] [stdout]    --> src/main.rs:76:21
[INFO] [stdout]     |
[INFO] [stdout]  76 |       let mut swarm = SwarmBuilder::with_existing_identity(key)
[INFO] [stdout]     |  _____________________^
[INFO] [stdout]  77 | |         .with_tokio()
[INFO] [stdout]  78 | |         .with_other_transport(|keypair| {
[INFO] [stdout]  79 | |             let tcp_trans = transport::HolePunchTransport::new(tcp_cfg.clone())
[INFO] [stdout] ...   |
[INFO] [stdout] 118 | |             )),
[INFO] [stdout] 119 | |         })
[INFO] [stdout]     | |__________^
[INFO] [stdout]     |
[INFO] [stdout]     = note: requested on the command line with `-D unmustuse-in-always-ok`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `libp2p-relay-demo` (bin "libp2p-relay-demo") due to 1 previous error; 1 warning emitted
[INFO] running `Command { std: "docker" "inspect" "52c494b5ebcfec76a64d09d92a5a927561bd21fc9bfe914430f1f77fb2058652", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "52c494b5ebcfec76a64d09d92a5a927561bd21fc9bfe914430f1f77fb2058652", kill_on_drop: false }`
[INFO] [stdout] 52c494b5ebcfec76a64d09d92a5a927561bd21fc9bfe914430f1f77fb2058652
