[INFO] fetching crate unblock 0.6.0...
[INFO] checking unblock-0.6.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate unblock 0.6.0 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate unblock 0.6.0 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 unblock 0.6.0
[INFO] finished tweaking crates.io crate unblock 0.6.0
[INFO] tweaked toml for crates.io crate unblock 0.6.0 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+ceab6128fa48a616bfd3e3adf4bc80133b8ee223" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 50 packages
[INFO] [stderr]       Adding bitflags v1.3.2 (latest: v2.5.0)
[INFO] [stderr]       Adding ctor v0.1.26 (latest: v0.2.7)
[INFO] [stderr]       Adding object v0.32.2 (latest: v0.34.0)
[INFO] [stderr]       Adding redox_syscall v0.4.1 (latest: v0.5.1)
[INFO] [stderr]       Adding syn v1.0.109 (latest: v2.0.58)
[INFO] [stderr]       Adding windows-targets v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_aarch64_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_i686_msvc v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnu v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_gnullvm v0.48.5 (latest: v0.52.4)
[INFO] [stderr]       Adding windows_x86_64_msvc v0.48.5 (latest: v0.52.4)
[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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 1e52befdf83d7e3de46648c339383ea6869b58ee6a14f59d0e8189acca8f5ab5
[INFO] running `Command { std: "docker" "start" "-a" "1e52befdf83d7e3de46648c339383ea6869b58ee6a14f59d0e8189acca8f5ab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "1e52befdf83d7e3de46648c339383ea6869b58ee6a14f59d0e8189acca8f5ab5", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "1e52befdf83d7e3de46648c339383ea6869b58ee6a14f59d0e8189acca8f5ab5", kill_on_drop: false }`
[INFO] [stdout] 1e52befdf83d7e3de46648c339383ea6869b58ee6a14f59d0e8189acca8f5ab5
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] 981ff08cebf1ae4d778c1e545e9adf4cb0ca1a039937428edd207ff52cb05563
[INFO] running `Command { std: "docker" "start" "-a" "981ff08cebf1ae4d778c1e545e9adf4cb0ca1a039937428edd207ff52cb05563", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling ctor v0.1.26
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking unblock v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.12s
[INFO] running `Command { std: "docker" "inspect" "981ff08cebf1ae4d778c1e545e9adf4cb0ca1a039937428edd207ff52cb05563", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "981ff08cebf1ae4d778c1e545e9adf4cb0ca1a039937428edd207ff52cb05563", kill_on_drop: false }`
[INFO] [stdout] 981ff08cebf1ae4d778c1e545e9adf4cb0ca1a039937428edd207ff52cb05563
[INFO] checking unblock-0.6.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate unblock 0.6.0 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate unblock 0.6.0 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 unblock 0.6.0
[INFO] finished tweaking crates.io crate unblock 0.6.0
[INFO] tweaked toml for crates.io crate unblock 0.6.0 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+3a4bc97f6385a3aa300a4fd689b44350e54fd676" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[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-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] db78a91ad6874ba4f99aaae6940fcd748001172e42f679314e6789f3c95381f0
[INFO] running `Command { std: "docker" "start" "-a" "db78a91ad6874ba4f99aaae6940fcd748001172e42f679314e6789f3c95381f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "db78a91ad6874ba4f99aaae6940fcd748001172e42f679314e6789f3c95381f0", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "db78a91ad6874ba4f99aaae6940fcd748001172e42f679314e6789f3c95381f0", kill_on_drop: false }`
[INFO] [stdout] db78a91ad6874ba4f99aaae6940fcd748001172e42f679314e6789f3c95381f0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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] a7e57304968699783dfbfb89730d171ad8ba2ed8640226f97ea3b6c5c1765a75
[INFO] running `Command { std: "docker" "start" "-a" "a7e57304968699783dfbfb89730d171ad8ba2ed8640226f97ea3b6c5c1765a75", kill_on_drop: false }`
[INFO] [stderr]    Compiling syn v1.0.109
[INFO] [stderr]     Checking tokio v1.37.0
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]    Compiling futures-macro v0.3.30
[INFO] [stderr]    Compiling ctor v0.1.26
[INFO] [stderr]     Checking unblock v0.6.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking futures-util v0.3.30
[INFO] [stderr]     Checking futures-executor v0.3.30
[INFO] [stderr]     Checking futures v0.3.30
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]  --> tests/shutdown-force.rs:8:24
[INFO] [stdout]   |
[INFO] [stdout] 8 |     std::thread::spawn(|| 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] 8 ~     std::thread::spawn(|| -> /* Type */ { loop {
[INFO] [stdout] 9 |         unblock(|| std::thread::sleep(Duration::from_secs(1)));
[INFO] [stdout] 10~     } });
[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 `unblock` (test "shutdown-force") 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]    --> tests/lib.rs:42:21
[INFO] [stdout]     |
[INFO] [stdout] 42  |     assert!(unblock(|| {
[INFO] [stdout]     |                     ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Val`
[INFO] [stdout] note: required by a bound in `unblock`
[INFO] [stdout]    --> /opt/rustwide/workdir/src/lib.rs:251:19
[INFO] [stdout]     |
[INFO] [stdout] 251 | pub fn unblock<T: Val>(f: impl Fun<T>) -> Join<T> {
[INFO] [stdout]     |                   ^^^ required by this bound in `unblock`
[INFO] [stdout] help: try giving this closure an explicit return type
[INFO] [stdout]     |
[INFO] [stdout] 42  |     assert!(unblock(|| -> /* Type */ {
[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 `unblock` (test "lib") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "a7e57304968699783dfbfb89730d171ad8ba2ed8640226f97ea3b6c5c1765a75", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7e57304968699783dfbfb89730d171ad8ba2ed8640226f97ea3b6c5c1765a75", kill_on_drop: false }`
[INFO] [stdout] a7e57304968699783dfbfb89730d171ad8ba2ed8640226f97ea3b6c5c1765a75