[INFO] fetching crate event_sync 0.4.0...
[INFO] checking event_sync-0.4.0 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate event_sync 0.4.0 into /workspace/builds/worker-3-tc1/source
[INFO] validating manifest of crates.io crate event_sync 0.4.0 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 event_sync 0.4.0
[INFO] finished tweaking crates.io crate event_sync 0.4.0
[INFO] tweaked toml for crates.io crate event_sync 0.4.0 written to /workspace/builds/worker-3-tc1/source/Cargo.toml
[INFO] crate crates.io crate event_sync 0.4.0 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 thiserror-impl v1.0.49
[INFO] [stderr]   Downloaded serde_json v1.0.107
[INFO] [stderr]   Downloaded serde_derive v1.0.189
[INFO] [stderr]   Downloaded syn v2.0.38
[INFO] [stderr]   Downloaded serde v1.0.189
[INFO] [stderr]   Downloaded thiserror v1.0.49
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 73558de10cb859a1d9c9cc05d05fdfdae2f4ba4a4fb8ee2254ea6ea70fae0640
[INFO] running `Command { std: "docker" "start" "-a" "73558de10cb859a1d9c9cc05d05fdfdae2f4ba4a4fb8ee2254ea6ea70fae0640", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "73558de10cb859a1d9c9cc05d05fdfdae2f4ba4a4fb8ee2254ea6ea70fae0640", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "73558de10cb859a1d9c9cc05d05fdfdae2f4ba4a4fb8ee2254ea6ea70fae0640", kill_on_drop: false }`
[INFO] [stdout] 73558de10cb859a1d9c9cc05d05fdfdae2f4ba4a4fb8ee2254ea6ea70fae0640
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] 0b4fb696b2294a31973a2855e2b470dc0d0a72b4bfa5736a9ee81aae06b69f19
[INFO] running `Command { std: "docker" "start" "-a" "0b4fb696b2294a31973a2855e2b470dc0d0a72b4bfa5736a9ee81aae06b69f19", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling serde v1.0.189
[INFO] [stderr]    Compiling thiserror v1.0.49
[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]    Compiling serde_derive v1.0.189
[INFO] [stderr]    Compiling thiserror-impl v1.0.49
[INFO] [stderr]     Checking event_sync v0.4.0 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 5.79s
[INFO] running `Command { std: "docker" "inspect" "0b4fb696b2294a31973a2855e2b470dc0d0a72b4bfa5736a9ee81aae06b69f19", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "0b4fb696b2294a31973a2855e2b470dc0d0a72b4bfa5736a9ee81aae06b69f19", kill_on_drop: false }`
[INFO] [stdout] 0b4fb696b2294a31973a2855e2b470dc0d0a72b4bfa5736a9ee81aae06b69f19
[INFO] checking event_sync-0.4.0 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate event_sync 0.4.0 into /workspace/builds/worker-3-tc2/source
[INFO] validating manifest of crates.io crate event_sync 0.4.0 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 event_sync 0.4.0
[INFO] finished tweaking crates.io crate event_sync 0.4.0
[INFO] tweaked toml for crates.io crate event_sync 0.4.0 written to /workspace/builds/worker-3-tc2/source/Cargo.toml
[INFO] crate crates.io crate event_sync 0.4.0 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-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] a7be4347602e40a0bae29e4edd66485033ff21928d0876b5b3a6a81b0862a93d
[INFO] running `Command { std: "docker" "start" "-a" "a7be4347602e40a0bae29e4edd66485033ff21928d0876b5b3a6a81b0862a93d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "a7be4347602e40a0bae29e4edd66485033ff21928d0876b5b3a6a81b0862a93d", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "a7be4347602e40a0bae29e4edd66485033ff21928d0876b5b3a6a81b0862a93d", kill_on_drop: false }`
[INFO] [stdout] a7be4347602e40a0bae29e4edd66485033ff21928d0876b5b3a6a81b0862a93d
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-3-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] d34b8cbd3daafe8dc116edddb0f1b55ce87e26e453bc23e06b3aeca32ff6be33
[INFO] running `Command { std: "docker" "start" "-a" "d34b8cbd3daafe8dc116edddb0f1b55ce87e26e453bc23e06b3aeca32ff6be33", kill_on_drop: false }`
[INFO] [stderr]    Compiling proc-macro2 v1.0.69
[INFO] [stderr]    Compiling serde v1.0.189
[INFO] [stderr]    Compiling thiserror v1.0.49
[INFO] [stderr]    Compiling serde_json v1.0.107
[INFO] [stderr]    Compiling anyhow v1.0.75
[INFO] [stderr]     Checking ryu v1.0.15
[INFO] [stderr]     Checking itoa v1.0.9
[INFO] [stderr]    Compiling quote v1.0.33
[INFO] [stderr]    Compiling syn v2.0.38
[INFO] [stderr]    Compiling serde_derive v1.0.189
[INFO] [stderr]    Compiling thiserror-impl v1.0.49
[INFO] [stderr]     Checking event_sync v0.4.0 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]     --> src/lib.rs:1041:7
[INFO] [stdout]      |
[INFO] [stdout] 1041 |       Err(TimeError::ThatTimeHasAlreadyHappened)?;
[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] 1041 |       Err::<T, errors::TimeError>(TimeError::ThatTimeHasAlreadyHappened)?;
[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 `event_sync` (lib test) due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "d34b8cbd3daafe8dc116edddb0f1b55ce87e26e453bc23e06b3aeca32ff6be33", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d34b8cbd3daafe8dc116edddb0f1b55ce87e26e453bc23e06b3aeca32ff6be33", kill_on_drop: false }`
[INFO] [stdout] d34b8cbd3daafe8dc116edddb0f1b55ce87e26e453bc23e06b3aeca32ff6be33