[INFO] fetching crate argwerk 0.20.4...
[INFO] checking argwerk-0.20.4 against master#ceab6128fa48a616bfd3e3adf4bc80133b8ee223 for no-never-type-fallback
[INFO] extracting crate argwerk 0.20.4 into /workspace/builds/worker-7-tc1/source
[INFO] validating manifest of crates.io crate argwerk 0.20.4 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 argwerk 0.20.4
[INFO] finished tweaking crates.io crate argwerk 0.20.4
[INFO] tweaked toml for crates.io crate argwerk 0.20.4 written to /workspace/builds/worker-7-tc1/source/Cargo.toml
[INFO] crate crates.io crate argwerk 0.20.4 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 anyhow v1.0.65
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] f91342ed6f2e49cad65bd3146a8d5c8c2289620d65683016e4920178929bd919
[INFO] running `Command { std: "docker" "start" "-a" "f91342ed6f2e49cad65bd3146a8d5c8c2289620d65683016e4920178929bd919", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "f91342ed6f2e49cad65bd3146a8d5c8c2289620d65683016e4920178929bd919", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "f91342ed6f2e49cad65bd3146a8d5c8c2289620d65683016e4920178929bd919", kill_on_drop: false }`
[INFO] [stdout] f91342ed6f2e49cad65bd3146a8d5c8c2289620d65683016e4920178929bd919
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] cd742f6fd2ab2b902ae7be11d9f1cccf78f68231e5c1674e079247bba1a060ad
[INFO] running `Command { std: "docker" "start" "-a" "cd742f6fd2ab2b902ae7be11d9f1cccf78f68231e5c1674e079247bba1a060ad", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.65
[INFO] [stderr]     Checking argwerk v0.20.4 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 0.40s
[INFO] running `Command { std: "docker" "inspect" "cd742f6fd2ab2b902ae7be11d9f1cccf78f68231e5c1674e079247bba1a060ad", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "cd742f6fd2ab2b902ae7be11d9f1cccf78f68231e5c1674e079247bba1a060ad", kill_on_drop: false }`
[INFO] [stdout] cd742f6fd2ab2b902ae7be11d9f1cccf78f68231e5c1674e079247bba1a060ad
[INFO] checking argwerk-0.20.4 against try#3a4bc97f6385a3aa300a4fd689b44350e54fd676 for no-never-type-fallback
[INFO] extracting crate argwerk 0.20.4 into /workspace/builds/worker-7-tc2/source
[INFO] validating manifest of crates.io crate argwerk 0.20.4 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 argwerk 0.20.4
[INFO] finished tweaking crates.io crate argwerk 0.20.4
[INFO] tweaked toml for crates.io crate argwerk 0.20.4 written to /workspace/builds/worker-7-tc2/source/Cargo.toml
[INFO] crate crates.io crate argwerk 0.20.4 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-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] d883acb222d25efcd7b308231262db4985a35a7d7328e454ef4e585cfccc2556
[INFO] running `Command { std: "docker" "start" "-a" "d883acb222d25efcd7b308231262db4985a35a7d7328e454ef4e585cfccc2556", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "d883acb222d25efcd7b308231262db4985a35a7d7328e454ef4e585cfccc2556", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "d883acb222d25efcd7b308231262db4985a35a7d7328e454ef4e585cfccc2556", kill_on_drop: false }`
[INFO] [stdout] d883acb222d25efcd7b308231262db4985a35a7d7328e454ef4e585cfccc2556
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-7-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] 769facfb3793b9aa347e326ac04ba78acadb42eb1cb550341a1fd05ab573d510
[INFO] running `Command { std: "docker" "start" "-a" "769facfb3793b9aa347e326ac04ba78acadb42eb1cb550341a1fd05ab573d510", kill_on_drop: false }`
[INFO] [stderr]    Compiling anyhow v1.0.65
[INFO] [stderr]     Checking argwerk v0.20.4 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> examples/simple.rs:2:16
[INFO] [stdout]    |
[INFO] [stdout] 2  |       let args = argwerk::args! {
[INFO] [stdout]    |  ________________^
[INFO] [stdout] 3  | |         /// A simple tool.
[INFO] [stdout] 4  | |         "tool [-h]" {
[INFO] [stdout] 5  | |             help: bool,
[INFO] [stdout] ...  |
[INFO] [stdout] 16 | |         }
[INFO] [stdout] 17 | |     }?;
[INFO] [stdout]    | |_____^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__impl` which comes from the expansion of the macro `argwerk::args` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> examples/tour.rs:3:1
[INFO] [stdout]    |
[INFO] [stdout] 3  | / argwerk::define! {
[INFO] [stdout] 4  | |     /// A command touring the capabilities of argwerk.
[INFO] [stdout] 5  | |     #[derive(Default)]
[INFO] [stdout] 6  | |     #[usage = "tour [-h]"]
[INFO] [stdout] ...  |
[INFO] [stdout] 52 | |     }
[INFO] [stdout] 53 | | }
[INFO] [stdout]    | |_^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__impl` which comes from the expansion of the macro `argwerk::define` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> examples/define.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / argwerk::define! {
[INFO] [stdout] 2  | |     /// A simple tool.
[INFO] [stdout] 3  | |     #[usage = "tool [-h]"]
[INFO] [stdout] 4  | |     struct Args {
[INFO] [stdout] ...  |
[INFO] [stdout] 16 | |     }
[INFO] [stdout] 17 | | }
[INFO] [stdout]    | |_^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__impl` which comes from the expansion of the macro `argwerk::define` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `argwerk` (example "simple") due to 2 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 1 previous error
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]   --> examples/subcommands.rs:1:1
[INFO] [stdout]    |
[INFO] [stdout] 1  | / argwerk::define! {
[INFO] [stdout] 2  | |     /// Remove something.
[INFO] [stdout] 3  | |     #[usage = "remove"]
[INFO] [stdout] 4  | |     struct Remove {
[INFO] [stdout] ...  |
[INFO] [stdout] 10 | |     }
[INFO] [stdout] 11 | | }
[INFO] [stdout]    | |_^ cannot infer type
[INFO] [stdout]    |
[INFO] [stdout]    = note: this error originates in the macro `$crate::__impl` which comes from the expansion of the macro `argwerk::define` (in Nightly builds, run with -Z macro-backtrace for more info)
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `argwerk` (example "tour") due to 2 previous errors
[INFO] [stderr] error: could not compile `argwerk` (example "define") due to 2 previous errors
[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 `argwerk` (example "subcommands") due to 2 previous errors
[INFO] running `Command { std: "docker" "inspect" "769facfb3793b9aa347e326ac04ba78acadb42eb1cb550341a1fd05ab573d510", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "769facfb3793b9aa347e326ac04ba78acadb42eb1cb550341a1fd05ab573d510", kill_on_drop: false }`
[INFO] [stdout] 769facfb3793b9aa347e326ac04ba78acadb42eb1cb550341a1fd05ab573d510