[INFO] cloning repository https://github.com/dekellum/blocking-permit
[INFO] running `Command { std: "git" "-c" "credential.helper=" "-c" "credential.helper=/workspace/cargo-home/bin/git-credential-null" "clone" "--bare" "https://github.com/dekellum/blocking-permit" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdekellum%2Fblocking-permit", kill_on_drop: false }`
[INFO] [stderr] Cloning into bare repository '/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdekellum%2Fblocking-permit'...
[INFO] running `Command { std: "git" "rev-parse" "HEAD", kill_on_drop: false }`
[INFO] [stdout] 65f735ad65de63e2acd2a3cde529cad95524a1ad
[INFO] checking dekellum/blocking-permit against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdekellum%2Fblocking-permit" "/workspace/builds/worker-2-tc1/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc1/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dekellum/blocking-permit 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 git repo https://github.com/dekellum/blocking-permit
[INFO] finished tweaking git repo https://github.com/dekellum/blocking-permit
[INFO] tweaked toml for git repo https://github.com/dekellum/blocking-permit written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate git repo https://github.com/dekellum/blocking-permit 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] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded tao-log v1.0.1
[INFO] [stderr]   Downloaded piccolog v1.0.3
[INFO] [stderr]   Downloaded tokio v1.6.0
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] d6688740466328fd39a6eb2cda2c1221f03a536325a1ae5a047aa7a415fb5c28
[INFO] running `Command { std: "docker" "start" "-a" "d6688740466328fd39a6eb2cda2c1221f03a536325a1ae5a047aa7a415fb5c28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d6688740466328fd39a6eb2cda2c1221f03a536325a1ae5a047aa7a415fb5c28", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d6688740466328fd39a6eb2cda2c1221f03a536325a1ae5a047aa7a415fb5c28", kill_on_drop: false }`
[INFO] [stdout] d6688740466328fd39a6eb2cda2c1221f03a536325a1ae5a047aa7a415fb5c28
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 17763bf2b5128a9cb2a9ba119c5713f2321895e74401f53c9ea28d28ee64e977
[INFO] running `Command { std: "docker" "start" "-a" "17763bf2b5128a9cb2a9ba119c5713f2321895e74401f53c9ea28d28ee64e977", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling tao-log v1.0.1
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]    Compiling blocking-permit v1.3.4 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling piccolog v1.0.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking futures-executor v0.3.15
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 4.03s
[INFO] running `Command { std: "docker" "inspect" "17763bf2b5128a9cb2a9ba119c5713f2321895e74401f53c9ea28d28ee64e977", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "17763bf2b5128a9cb2a9ba119c5713f2321895e74401f53c9ea28d28ee64e977", kill_on_drop: false }`
[INFO] [stdout] 17763bf2b5128a9cb2a9ba119c5713f2321895e74401f53c9ea28d28ee64e977
[INFO] checking dekellum/blocking-permit against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] running `Command { std: "git" "clone" "/workspace/cache/git-repos/https%3A%2F%2Fgithub.com%2Fdekellum%2Fblocking-permit" "/workspace/builds/worker-2-tc2/source", kill_on_drop: false }`
[INFO] [stderr] Cloning into '/workspace/builds/worker-2-tc2/source'...
[INFO] [stderr] done.
[INFO] validating manifest of git repo https://github.com/dekellum/blocking-permit 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 git repo https://github.com/dekellum/blocking-permit
[INFO] finished tweaking git repo https://github.com/dekellum/blocking-permit
[INFO] tweaked toml for git repo https://github.com/dekellum/blocking-permit written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate git repo https://github.com/dekellum/blocking-permit 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-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] d59bf31b737f2ca12cdc4837afebb55e52e2aafbb3422abfca7ebf8f0536157b
[INFO] running `Command { std: "docker" "start" "-a" "d59bf31b737f2ca12cdc4837afebb55e52e2aafbb3422abfca7ebf8f0536157b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d59bf31b737f2ca12cdc4837afebb55e52e2aafbb3422abfca7ebf8f0536157b", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d59bf31b737f2ca12cdc4837afebb55e52e2aafbb3422abfca7ebf8f0536157b", kill_on_drop: false }`
[INFO] [stdout] d59bf31b737f2ca12cdc4837afebb55e52e2aafbb3422abfca7ebf8f0536157b
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-2-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] 78c02431c52a0eaa235385c38cba2533db16b70d80bbc21bfeb928e5946f56b8
[INFO] running `Command { std: "docker" "start" "-a" "78c02431c52a0eaa235385c38cba2533db16b70d80bbc21bfeb928e5946f56b8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.94
[INFO] [stderr]    Compiling proc-macro2 v1.0.27
[INFO] [stderr]    Compiling futures-core v0.3.15
[INFO] [stderr]    Compiling syn v1.0.72
[INFO] [stderr]    Compiling futures-macro v0.3.15
[INFO] [stderr]    Compiling futures-task v0.3.15
[INFO] [stderr]    Compiling proc-macro-nested v0.1.7
[INFO] [stderr]    Compiling futures-util v0.3.15
[INFO] [stderr]    Compiling futures-channel v0.3.15
[INFO] [stderr]    Compiling tao-log v1.0.1
[INFO] [stderr]     Checking smallvec v1.6.1
[INFO] [stderr]     Checking lock_api v0.4.4
[INFO] [stderr]     Checking slab v0.4.3
[INFO] [stderr]     Checking pin-project-lite v0.2.6
[INFO] [stderr]    Compiling blocking-permit v1.3.4 (/opt/rustwide/workdir)
[INFO] [stderr]    Compiling piccolog v1.0.3
[INFO] [stderr]     Checking remove_dir_all v0.5.3
[INFO] [stderr]    Compiling quote v1.0.9
[INFO] [stderr]     Checking getrandom v0.2.3
[INFO] [stderr]     Checking parking_lot_core v0.8.3
[INFO] [stderr]     Checking num_cpus v1.13.0
[INFO] [stderr]     Checking rand_core v0.6.2
[INFO] [stderr]     Checking parking_lot v0.11.1
[INFO] [stderr]     Checking rand_chacha v0.3.0
[INFO] [stderr]     Checking rand v0.8.3
[INFO] [stderr]     Checking tempfile v3.2.0
[INFO] [stderr]     Checking futures-executor v0.3.15
[INFO] [stdout] error[E0283]: type annotations needed for `Dispatched<T>`
[INFO] [stdout]    --> src/tests.rs:102:9
[INFO] [stdout]     |
[INFO] [stdout] 102 |       let task = dispatch_rx(|| {
[INFO] [stdout]     |  _________^^^^___-
[INFO] [stdout] 103 | |         debug!("about to panic");
[INFO] [stdout] 104 | |         panic!("you asked for it");
[INFO] [stdout] 105 | |     }).unwrap();
[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 `dispatch::dispatch_rx`
[INFO] [stdout]    --> src/dispatch.rs:90:14
[INFO] [stdout]     |
[INFO] [stdout] 88  | pub fn dispatch_rx<F, T>(f: F) -> DispatchRx<F, T>
[INFO] [stdout]     |        ----------- required by a bound in this function
[INFO] [stdout] 89  |     where F: FnOnce() -> T + Send + 'static,
[INFO] [stdout] 90  |           T: Send + 'static
[INFO] [stdout]     |              ^^^^ required by this bound in `dispatch_rx`
[INFO] [stdout] help: consider giving `task` an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]     |
[INFO] [stdout] 102 |     let task: Dispatched<T> = dispatch_rx(|| {
[INFO] [stdout]     |             +++++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0283]: type annotations needed for `Result<T, errors::Canceled>`
[INFO] [stdout]    --> src/tests.rs:123:19
[INFO] [stdout]     |
[INFO] [stdout] 118 | /         dispatch_rx(|| {
[INFO] [stdout] 119 | |             debug!("about to panic");
[INFO] [stdout] 120 | |             panic!("you asked for it");
[INFO] [stdout] 121 | |         })
[INFO] [stdout]     | |__________- type must be known at this point
[INFO] [stdout] 122 |               .unwrap()
[INFO] [stdout] 123 |               .map(|r| {
[INFO] [stdout]     |                     ^
[INFO] [stdout]     |
[INFO] [stdout]     = note: cannot satisfy `_: Send`
[INFO] [stdout] note: required by a bound in `dispatch::dispatch_rx`
[INFO] [stdout]    --> src/dispatch.rs:90:14
[INFO] [stdout]     |
[INFO] [stdout] 88  | pub fn dispatch_rx<F, T>(f: F) -> DispatchRx<F, T>
[INFO] [stdout]     |        ----------- required by a bound in this function
[INFO] [stdout] 89  |     where F: FnOnce() -> T + Send + 'static,
[INFO] [stdout] 90  |           T: Send + 'static
[INFO] [stdout]     |              ^^^^ required by this bound in `dispatch_rx`
[INFO] [stdout] help: consider giving this closure parameter an explicit type, where the type for type parameter `T` is specified
[INFO] [stdout]     |
[INFO] [stdout] 123 |             .map(|r: Result<T, errors::Canceled>| {
[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 `blocking-permit` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "78c02431c52a0eaa235385c38cba2533db16b70d80bbc21bfeb928e5946f56b8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "78c02431c52a0eaa235385c38cba2533db16b70d80bbc21bfeb928e5946f56b8", kill_on_drop: false }`
[INFO] [stdout] 78c02431c52a0eaa235385c38cba2533db16b70d80bbc21bfeb928e5946f56b8