[INFO] fetching crate pipe_watcher 2.1.2...
[INFO] checking pipe_watcher-2.1.2 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate pipe_watcher 2.1.2 into /workspace/builds/worker-6-tc1/source
[INFO] validating manifest of crates.io crate pipe_watcher 2.1.2 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 pipe_watcher 2.1.2
[INFO] finished tweaking crates.io crate pipe_watcher 2.1.2
[INFO] tweaked toml for crates.io crate pipe_watcher 2.1.2 written to /workspace/builds/worker-6-tc1/source/Cargo.toml
[INFO] crate crates.io crate pipe_watcher 2.1.2 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] [stderr]     Updating crates.io index
[INFO] [stderr]  Downloading crates ...
[INFO] [stderr]   Downloaded ipipe v0.8.2
[INFO] [stderr]   Downloaded getch v0.2.1
[INFO] [stderr]   Downloaded nix v0.19.1
[INFO] [stderr]   Downloaded libc v0.2.88
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] d0e3168f6f4c8e6230a091eff5f27225cb8654d4552819e3a0814c9297ca736f
[INFO] running `Command { std: "docker" "start" "-a" "d0e3168f6f4c8e6230a091eff5f27225cb8654d4552819e3a0814c9297ca736f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d0e3168f6f4c8e6230a091eff5f27225cb8654d4552819e3a0814c9297ca736f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d0e3168f6f4c8e6230a091eff5f27225cb8654d4552819e3a0814c9297ca736f", kill_on_drop: false }`
[INFO] [stdout] d0e3168f6f4c8e6230a091eff5f27225cb8654d4552819e3a0814c9297ca736f
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 6dcd607df87bbfbc228cd30c9e5f8ec66eff9075af941d260aa2635e94373b8a
[INFO] running `Command { std: "docker" "start" "-a" "6dcd607df87bbfbc228cd30c9e5f8ec66eff9075af941d260aa2635e94373b8a", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]     Checking getch v0.2.1
[INFO] [stderr]     Checking ipipe v0.8.2
[INFO] [stderr]     Checking pipe_watcher v2.1.2 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 2.74s
[INFO] running `Command { std: "docker" "inspect" "6dcd607df87bbfbc228cd30c9e5f8ec66eff9075af941d260aa2635e94373b8a", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6dcd607df87bbfbc228cd30c9e5f8ec66eff9075af941d260aa2635e94373b8a", kill_on_drop: false }`
[INFO] [stdout] 6dcd607df87bbfbc228cd30c9e5f8ec66eff9075af941d260aa2635e94373b8a
[INFO] checking pipe_watcher-2.1.2 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate pipe_watcher 2.1.2 into /workspace/builds/worker-6-tc2/source
[INFO] validating manifest of crates.io crate pipe_watcher 2.1.2 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 pipe_watcher 2.1.2
[INFO] finished tweaking crates.io crate pipe_watcher 2.1.2
[INFO] tweaked toml for crates.io crate pipe_watcher 2.1.2 written to /workspace/builds/worker-6-tc2/source/Cargo.toml
[INFO] crate crates.io crate pipe_watcher 2.1.2 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] [stderr]     Blocking waiting for file lock on package cache
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 7b7108a6eeeb541ec1318d8b898a911d890616fc66111df4d82ce13dfdb59d95
[INFO] running `Command { std: "docker" "start" "-a" "7b7108a6eeeb541ec1318d8b898a911d890616fc66111df4d82ce13dfdb59d95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7b7108a6eeeb541ec1318d8b898a911d890616fc66111df4d82ce13dfdb59d95", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7b7108a6eeeb541ec1318d8b898a911d890616fc66111df4d82ce13dfdb59d95", kill_on_drop: false }`
[INFO] [stdout] 7b7108a6eeeb541ec1318d8b898a911d890616fc66111df4d82ce13dfdb59d95
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-6-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] 3f54e8d95a44b88c5edcc98b67e604d5eafd8ce67aa2102ad0a54315e3ba32c8
[INFO] running `Command { std: "docker" "start" "-a" "3f54e8d95a44b88c5edcc98b67e604d5eafd8ce67aa2102ad0a54315e3ba32c8", kill_on_drop: false }`
[INFO] [stderr]    Compiling libc v0.2.88
[INFO] [stderr]     Checking termios v0.2.2
[INFO] [stderr]     Checking nix v0.19.1
[INFO] [stderr]     Checking getch v0.2.1
[INFO] [stderr]     Checking ipipe v0.8.2
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/ipipe-0.8.2/src/pipe_unix.rs:42:25
[INFO] [stdout]    |
[INFO] [stdout] 42 |                         Err(Error::InvalidPath)?;
[INFO] [stdout]    |                         ^^^ cannot infer type of the type parameter `T` declared on the enum `Result`
[INFO] [stdout]    |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]    |
[INFO] [stdout] 42 |                         Err::<T, Error>(Error::InvalidPath)?;
[INFO] [stdout]    |                            ++++++++++++
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> /opt/rustwide/cargo-home/registry/src/index.crates.io-6f17d22bba15001f/ipipe-0.8.2/src/pipe_unix.rs:112:25
[INFO] [stdout]     |
[INFO] [stdout] 112 |                         Err(nix::Error::InvalidPath)?;
[INFO] [stdout]     |                         ^^^ cannot infer type of the type parameter `T` declared on the enum `Result`
[INFO] [stdout]     |
[INFO] [stdout] help: consider specifying the generic arguments
[INFO] [stdout]     |
[INFO] [stdout] 112 |                         Err::<T, nix::Error>(nix::Error::InvalidPath)?;
[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 E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `ipipe` (lib) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "3f54e8d95a44b88c5edcc98b67e604d5eafd8ce67aa2102ad0a54315e3ba32c8", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "3f54e8d95a44b88c5edcc98b67e604d5eafd8ce67aa2102ad0a54315e3ba32c8", kill_on_drop: false }`
[INFO] [stdout] 3f54e8d95a44b88c5edcc98b67e604d5eafd8ce67aa2102ad0a54315e3ba32c8