[INFO] fetching crate nusb 0.1.1...
[INFO] checking nusb-0.1.1 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate nusb 0.1.1 into /workspace/builds/worker-2-tc1/source
[INFO] validating manifest of crates.io crate nusb 0.1.1 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 nusb 0.1.1
[INFO] finished tweaking crates.io crate nusb 0.1.1
[INFO] tweaked toml for crates.io crate nusb 0.1.1 written to /workspace/builds/worker-2-tc1/source/Cargo.toml
[INFO] crate crates.io crate nusb 0.1.1 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]  Downloading crates ...
[INFO] [stderr]   Downloaded cc v1.0.25
[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] bb049b48367da87ca3b96e2cb35f137977086528c9ea71907cac5d3b54bc6b23
[INFO] running `Command { std: "docker" "start" "-a" "bb049b48367da87ca3b96e2cb35f137977086528c9ea71907cac5d3b54bc6b23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "bb049b48367da87ca3b96e2cb35f137977086528c9ea71907cac5d3b54bc6b23", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "bb049b48367da87ca3b96e2cb35f137977086528c9ea71907cac5d3b54bc6b23", kill_on_drop: false }`
[INFO] [stdout] bb049b48367da87ca3b96e2cb35f137977086528c9ea71907cac5d3b54bc6b23
[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] 2aa8602bee9a0a208519ec14f26fcfb4a30ecd3d079ad4b1647ccbdf9323b5f1
[INFO] running `Command { std: "docker" "start" "-a" "2aa8602bee9a0a208519ec14f26fcfb4a30ecd3d079ad4b1647ccbdf9323b5f1", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.6.3
[INFO] [stderr]    Compiling rustix v0.38.17
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]     Checking linux-raw-sys v0.4.8
[INFO] [stderr]     Checking regex-syntax v0.7.5
[INFO] [stderr]     Checking waker-fn v1.1.1
[INFO] [stderr]     Checking parking v2.1.1
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking termcolor v1.3.0
[INFO] [stderr]     Checking atomic-waker v1.1.2
[INFO] [stderr]     Checking aho-corasick v1.1.1
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stderr]     Checking regex-automata v0.3.8
[INFO] [stderr]     Checking is-terminal v0.4.9
[INFO] [stderr]     Checking nusb v0.1.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Checking regex v1.9.5
[INFO] [stderr]     Checking env_logger v0.10.0
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.32s
[INFO] running `Command { std: "docker" "inspect" "2aa8602bee9a0a208519ec14f26fcfb4a30ecd3d079ad4b1647ccbdf9323b5f1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "2aa8602bee9a0a208519ec14f26fcfb4a30ecd3d079ad4b1647ccbdf9323b5f1", kill_on_drop: false }`
[INFO] [stdout] 2aa8602bee9a0a208519ec14f26fcfb4a30ecd3d079ad4b1647ccbdf9323b5f1
[INFO] checking nusb-0.1.1 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate nusb 0.1.1 into /workspace/builds/worker-2-tc2/source
[INFO] validating manifest of crates.io crate nusb 0.1.1 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 nusb 0.1.1
[INFO] finished tweaking crates.io crate nusb 0.1.1
[INFO] tweaked toml for crates.io crate nusb 0.1.1 written to /workspace/builds/worker-2-tc2/source/Cargo.toml
[INFO] crate crates.io crate nusb 0.1.1 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] 5d491b6014436560129de11a0f94a1afb125849f98112685d02acbd3b5c334b1
[INFO] running `Command { std: "docker" "start" "-a" "5d491b6014436560129de11a0f94a1afb125849f98112685d02acbd3b5c334b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "5d491b6014436560129de11a0f94a1afb125849f98112685d02acbd3b5c334b1", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5d491b6014436560129de11a0f94a1afb125849f98112685d02acbd3b5c334b1", kill_on_drop: false }`
[INFO] [stdout] 5d491b6014436560129de11a0f94a1afb125849f98112685d02acbd3b5c334b1
[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] 4cf52fc5243756be437c51da2e23be029b28b848080e35ef4225067c413907df
[INFO] running `Command { std: "docker" "start" "-a" "4cf52fc5243756be437c51da2e23be029b28b848080e35ef4225067c413907df", kill_on_drop: false }`
[INFO] [stderr]     Checking memchr v2.6.3
[INFO] [stderr]    Compiling rustix v0.38.17
[INFO] [stderr]     Checking linux-raw-sys v0.4.8
[INFO] [stderr]    Compiling futures-core v0.3.28
[INFO] [stderr]    Compiling slab v0.4.9
[INFO] [stderr]     Checking regex-syntax v0.7.5
[INFO] [stderr]     Checking waker-fn v1.1.1
[INFO] [stderr]     Checking log v0.4.20
[INFO] [stderr]     Checking futures-io v0.3.28
[INFO] [stderr]     Checking fastrand v1.9.0
[INFO] [stderr]     Checking parking v2.1.1
[INFO] [stderr]     Checking termcolor v1.3.0
[INFO] [stderr]     Checking atomic-waker v1.1.2
[INFO] [stderr]     Checking aho-corasick v1.1.1
[INFO] [stderr]     Checking futures-lite v1.13.0
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/futures-lite-1.13.0/src/future.rs:469:27
[INFO] [stdout]     |
[INFO] [stdout] 469 |             let t1 = res1.map_err(|_| unreachable!()).unwrap();
[INFO] [stdout]     |                           ^^^^^^^ cannot infer type of the type parameter `F` declared on the method `map_err`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 469 |             let t1 = res1.map_err::<F, _>(|_| unreachable!()).unwrap();
[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 E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `futures-lite` (lib) due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] running `Command { std: "docker" "inspect" "4cf52fc5243756be437c51da2e23be029b28b848080e35ef4225067c413907df", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "4cf52fc5243756be437c51da2e23be029b28b848080e35ef4225067c413907df", kill_on_drop: false }`
[INFO] [stdout] 4cf52fc5243756be437c51da2e23be029b28b848080e35ef4225067c413907df