[INFO] fetching crate thread-scoped 1.0.2...
[INFO] checking thread-scoped-1.0.2 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate thread-scoped 1.0.2 into /workspace/builds/worker-0-tc1/source
[INFO] validating manifest of crates.io crate thread-scoped 1.0.2 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 thread-scoped 1.0.2
[INFO] finished tweaking crates.io crate thread-scoped 1.0.2
[INFO] tweaked toml for crates.io crate thread-scoped 1.0.2 written to /workspace/builds/worker-0-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] 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] 7b314e082c3384711ece2337b0fa54bb4ef21fa2af4b58394f79848fc48db89e
[INFO] running `Command { std: "docker" "start" "-a" "7b314e082c3384711ece2337b0fa54bb4ef21fa2af4b58394f79848fc48db89e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b314e082c3384711ece2337b0fa54bb4ef21fa2af4b58394f79848fc48db89e", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b314e082c3384711ece2337b0fa54bb4ef21fa2af4b58394f79848fc48db89e", kill_on_drop: false }`
[INFO] [stdout] 7b314e082c3384711ece2337b0fa54bb4ef21fa2af4b58394f79848fc48db89e
[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] a96ce4d3c51637929aacfe7d1f3646bc4a0e0ae95d0eeeffcdbe2a03ef023e15
[INFO] running `Command { std: "docker" "start" "-a" "a96ce4d3c51637929aacfe7d1f3646bc4a0e0ae95d0eeeffcdbe2a03ef023e15", kill_on_drop: false }`
[INFO] [stderr]     Checking thread-scoped v1.0.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.06s
[INFO] running `Command { std: "docker" "inspect" "a96ce4d3c51637929aacfe7d1f3646bc4a0e0ae95d0eeeffcdbe2a03ef023e15", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a96ce4d3c51637929aacfe7d1f3646bc4a0e0ae95d0eeeffcdbe2a03ef023e15", kill_on_drop: false }`
[INFO] [stdout] a96ce4d3c51637929aacfe7d1f3646bc4a0e0ae95d0eeeffcdbe2a03ef023e15
[INFO] checking thread-scoped-1.0.2 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate thread-scoped 1.0.2 into /workspace/builds/worker-0-tc2/source
[INFO] validating manifest of crates.io crate thread-scoped 1.0.2 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 thread-scoped 1.0.2
[INFO] finished tweaking crates.io crate thread-scoped 1.0.2
[INFO] tweaked toml for crates.io crate thread-scoped 1.0.2 written to /workspace/builds/worker-0-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] 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] 469da6f12dfa5677b3ace6f14aca5880a37c0471973592d37fd84cee74e4d18a
[INFO] running `Command { std: "docker" "start" "-a" "469da6f12dfa5677b3ace6f14aca5880a37c0471973592d37fd84cee74e4d18a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "469da6f12dfa5677b3ace6f14aca5880a37c0471973592d37fd84cee74e4d18a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "469da6f12dfa5677b3ace6f14aca5880a37c0471973592d37fd84cee74e4d18a", kill_on_drop: false }`
[INFO] [stdout] 469da6f12dfa5677b3ace6f14aca5880a37c0471973592d37fd84cee74e4d18a
[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] 223eff13ae25e8aa46fbe24d481fb47aadb595a43648cfc826741b5c15948c0f
[INFO] running `Command { std: "docker" "start" "-a" "223eff13ae25e8aa46fbe24d481fb47aadb595a43648cfc826741b5c15948c0f", kill_on_drop: false }`
[INFO] [stderr]     Checking thread-scoped v1.0.2 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0283]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:137:20
[INFO] [stdout]     |
[INFO] [stdout] 137 |             scoped(|| panic!()).join();
[INFO] [stdout]     |                    ^^
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `scoped`
[INFO] [stdout]    --> src/lib.rs:70:8
[INFO] [stdout]     |
[INFO] [stdout] 69  | pub unsafe fn scoped<'a, T, F>(f: F) -> JoinGuard<'a, T> where
[INFO] [stdout]     |               ------ required by a bound in this function
[INFO] [stdout] 70  |     T: Send + 'a, F: FnOnce() -> T, F: Send + 'a
[INFO] [stdout]     |        ^^^^ required by this bound in `scoped`
[INFO] [stdout] help: try giving this closure an explicit return type
[INFO] [stdout]     |
[INFO] [stdout] 137 |             scoped(|| -> /* Type */ panic!()).join();
[INFO] [stdout]     |                       +++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `JoinGuard<'_, _>`
[INFO] [stdout]    --> src/lib.rs:145:17
[INFO] [stdout]     |
[INFO] [stdout] 145 |             let _ = scoped(|| panic!());
[INFO] [stdout]     |                 ^   ------------------- type must be known at this point
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `scoped`
[INFO] [stdout]    --> src/lib.rs:70:8
[INFO] [stdout]     |
[INFO] [stdout] 69  | pub unsafe fn scoped<'a, T, F>(f: F) -> JoinGuard<'a, T> where
[INFO] [stdout]     |               ------ required by a bound in this function
[INFO] [stdout] 70  |     T: Send + 'a, F: FnOnce() -> T, F: Send + 'a
[INFO] [stdout]     |        ^^^^ required by this bound in `scoped`
[INFO] [stdout] help: consider giving this pattern a type, where the type for type parameter `T` is specified
[INFO] [stdout]     |
[INFO] [stdout] 145 |             let _: JoinGuard<'_, _> = scoped(|| panic!());
[INFO] [stdout]     |                  ++++++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0283`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `thread-scoped` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "223eff13ae25e8aa46fbe24d481fb47aadb595a43648cfc826741b5c15948c0f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "223eff13ae25e8aa46fbe24d481fb47aadb595a43648cfc826741b5c15948c0f", kill_on_drop: false }`
[INFO] [stdout] 223eff13ae25e8aa46fbe24d481fb47aadb595a43648cfc826741b5c15948c0f