[INFO] fetching crate hole-punch-connect 0.1.2...
[INFO] checking hole-punch-connect-0.1.2 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate hole-punch-connect 0.1.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate hole-punch-connect 0.1.2 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 crates.io crate hole-punch-connect 0.1.2
[INFO] finished tweaking crates.io crate hole-punch-connect 0.1.2
[INFO] tweaked toml for crates.io crate hole-punch-connect 0.1.2 written to /workspace/builds/worker-0-tc1/source/Cargo.toml
[INFO] crate crates.io crate hole-punch-connect 0.1.2 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] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 2ecfccd8b6a7e6dc21d5b283f18da2913182e1dfce7e5d8ef9835dafaac8aba6
[INFO] running `Command { std: "docker" "start" "-a" "2ecfccd8b6a7e6dc21d5b283f18da2913182e1dfce7e5d8ef9835dafaac8aba6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "2ecfccd8b6a7e6dc21d5b283f18da2913182e1dfce7e5d8ef9835dafaac8aba6", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2ecfccd8b6a7e6dc21d5b283f18da2913182e1dfce7e5d8ef9835dafaac8aba6", kill_on_drop: false }`
[INFO] [stdout] 2ecfccd8b6a7e6dc21d5b283f18da2913182e1dfce7e5d8ef9835dafaac8aba6
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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] 82e65b3548dcaaa3854760d9ca1a71d95f5334d935afbf8430fd2c1dc5712524
[INFO] running `Command { std: "docker" "start" "-a" "82e65b3548dcaaa3854760d9ca1a71d95f5334d935afbf8430fd2c1dc5712524", kill_on_drop: false }`
[INFO] [stderr]     Checking hole-punch-connect v0.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.09s
[INFO] running `Command { std: "docker" "inspect" "82e65b3548dcaaa3854760d9ca1a71d95f5334d935afbf8430fd2c1dc5712524", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "82e65b3548dcaaa3854760d9ca1a71d95f5334d935afbf8430fd2c1dc5712524", kill_on_drop: false }`
[INFO] [stdout] 82e65b3548dcaaa3854760d9ca1a71d95f5334d935afbf8430fd2c1dc5712524
[INFO] checking hole-punch-connect-0.1.2 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate hole-punch-connect 0.1.2 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate hole-punch-connect 0.1.2 on toolchain 3a4bc97f6385a3aa300a4fd689b44350e54fd676
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate hole-punch-connect 0.1.2
[INFO] finished tweaking crates.io crate hole-punch-connect 0.1.2
[INFO] tweaked toml for crates.io crate hole-punch-connect 0.1.2 written to /workspace/builds/worker-0-tc2/source/Cargo.toml
[INFO] crate crates.io crate hole-punch-connect 0.1.2 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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] a4a93a76965cf93aaaba5e691f84f09384984b137eaf4033ef66d552de1cff37
[INFO] running `Command { std: "docker" "start" "-a" "a4a93a76965cf93aaaba5e691f84f09384984b137eaf4033ef66d552de1cff37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a4a93a76965cf93aaaba5e691f84f09384984b137eaf4033ef66d552de1cff37", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a4a93a76965cf93aaaba5e691f84f09384984b137eaf4033ef66d552de1cff37", kill_on_drop: false }`
[INFO] [stdout] a4a93a76965cf93aaaba5e691f84f09384984b137eaf4033ef66d552de1cff37
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-0-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" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] d2df1448059944e97e79e26799f69304c8269a44cfaa74238d65bf3af617a742
[INFO] running `Command { std: "docker" "start" "-a" "d2df1448059944e97e79e26799f69304c8269a44cfaa74238d65bf3af617a742", kill_on_drop: false }`
[INFO] [stderr]     Checking hole-punch-connect v0.1.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/main.rs:11:22
[INFO] [stdout]    |
[INFO] [stdout] 11 |         std::thread::spawn(move || loop {
[INFO] [stdout]    |                            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `spawn`
[INFO] [stdout]   --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/thread/mod.rs:672:1
[INFO] [stdout] help: try giving this closure an explicit return type
[INFO] [stdout]    |
[INFO] [stdout] 11 ~         std::thread::spawn(move || -> /* Type */ { loop {
[INFO] [stdout] 12 |             buf.clear();
[INFO] [stdout]  ...
[INFO] [stdout] 15 |             }
[INFO] [stdout] 16 ~         } });
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hole-punch-connect` (bin "hole-punch-connect" test) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]   --> src/main.rs:11:22
[INFO] [stdout]    |
[INFO] [stdout] 11 |         std::thread::spawn(move || loop {
[INFO] [stdout]    |                            ^^^^^^^
[INFO] [stdout]    |
[INFO] [stdout]    = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `spawn`
[INFO] [stdout]   --> /rustc/3a4bc97f6385a3aa300a4fd689b44350e54fd676/library/std/src/thread/mod.rs:672:1
[INFO] [stdout] help: try giving this closure an explicit return type
[INFO] [stdout]    |
[INFO] [stdout] 11 ~         std::thread::spawn(move || -> /* Type */ { loop {
[INFO] [stdout] 12 |             buf.clear();
[INFO] [stdout]  ...
[INFO] [stdout] 15 |             }
[INFO] [stdout] 16 ~         } });
[INFO] [stdout]    |
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `hole-punch-connect` (bin "hole-punch-connect") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d2df1448059944e97e79e26799f69304c8269a44cfaa74238d65bf3af617a742", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d2df1448059944e97e79e26799f69304c8269a44cfaa74238d65bf3af617a742", kill_on_drop: false }`
[INFO] [stdout] d2df1448059944e97e79e26799f69304c8269a44cfaa74238d65bf3af617a742