[INFO] fetching crate enumset_derive 0.8.1...
[INFO] checking enumset_derive-0.8.1 against master#385fa9d845dd326c6bbfd58c22244215e431948a for absurd-question-mark-desugar
[INFO] extracting crate enumset_derive 0.8.1 into /workspace/builds/worker-5-tc1/source
[INFO] validating manifest of crates.io crate enumset_derive 0.8.1 on toolchain 385fa9d845dd326c6bbfd58c22244215e431948a
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate enumset_derive 0.8.1
[INFO] finished tweaking crates.io crate enumset_derive 0.8.1
[INFO] tweaked toml for crates.io crate enumset_derive 0.8.1 written to /workspace/builds/worker-5-tc1/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] [stderr]      Locking 19 packages
[INFO] [stderr]       Adding proc-macro-crate v1.3.1 (latest: v3.1.0)
[INFO] [stderr]       Adding toml_edit v0.19.15 (latest: v0.22.9)
[INFO] [stderr]       Adding winnow v0.5.40 (latest: v0.6.5)
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+385fa9d845dd326c6bbfd58c22244215e431948a" "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-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] 7a726779c0c63b1340d8e3b686dc16e64780fd5d49207ef47d56cc9fc11583e7
[INFO] running `Command { std: "docker" "start" "-a" "7a726779c0c63b1340d8e3b686dc16e64780fd5d49207ef47d56cc9fc11583e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "7a726779c0c63b1340d8e3b686dc16e64780fd5d49207ef47d56cc9fc11583e7", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "7a726779c0c63b1340d8e3b686dc16e64780fd5d49207ef47d56cc9fc11583e7", kill_on_drop: false }`
[INFO] [stdout] 7a726779c0c63b1340d8e3b686dc16e64780fd5d49207ef47d56cc9fc11583e7
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc1/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+385fa9d845dd326c6bbfd58c22244215e431948a" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 6b7d8cce9935e729f50464e34ce498d3b1e1ab5499b0c63946f4343c86d5db7f
[INFO] running `Command { std: "docker" "start" "-a" "6b7d8cce9935e729f50464e34ce498d3b1e1ab5499b0c63946f4343c86d5db7f", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking proc-macro2 v1.0.79
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]     Checking darling_core v0.20.8
[INFO] [stderr]    Compiling darling_macro v0.20.8
[INFO] [stderr]     Checking darling v0.20.8
[INFO] [stderr]     Checking enumset_derive v0.8.1 (/opt/rustwide/workdir)
[INFO] [stderr]     Finished `dev` profile [unoptimized + debuginfo] target(s) in 14.52s
[INFO] running `Command { std: "docker" "inspect" "6b7d8cce9935e729f50464e34ce498d3b1e1ab5499b0c63946f4343c86d5db7f", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "6b7d8cce9935e729f50464e34ce498d3b1e1ab5499b0c63946f4343c86d5db7f", kill_on_drop: false }`
[INFO] [stdout] 6b7d8cce9935e729f50464e34ce498d3b1e1ab5499b0c63946f4343c86d5db7f
[INFO] checking enumset_derive-0.8.1 against try#645bb72776a6a56a1a8f52631a44bd082b2ba509 for absurd-question-mark-desugar
[INFO] extracting crate enumset_derive 0.8.1 into /workspace/builds/worker-5-tc2/source
[INFO] validating manifest of crates.io crate enumset_derive 0.8.1 on toolchain 645bb72776a6a56a1a8f52631a44bd082b2ba509
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--manifest-path" "Cargo.toml" "--no-deps", kill_on_drop: false }`
[INFO] started tweaking crates.io crate enumset_derive 0.8.1
[INFO] finished tweaking crates.io crate enumset_derive 0.8.1
[INFO] tweaked toml for crates.io crate enumset_derive 0.8.1 written to /workspace/builds/worker-5-tc2/source/Cargo.toml
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "generate-lockfile" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] [stderr]     Updating crates.io index
[INFO] running `Command { std: CARGO_HOME="/workspace/cargo-home" RUSTUP_HOME="/workspace/rustup-home" "/workspace/cargo-home/bin/cargo" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "fetch" "--manifest-path" "Cargo.toml", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "metadata" "--no-deps" "--format-version=1", kill_on_drop: false }`
[INFO] [stdout] dfc1509cf28cb4c873ab715754174c10d9ac5253b52c30accb763d614671bbdd
[INFO] running `Command { std: "docker" "start" "-a" "dfc1509cf28cb4c873ab715754174c10d9ac5253b52c30accb763d614671bbdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "inspect" "dfc1509cf28cb4c873ab715754174c10d9ac5253b52c30accb763d614671bbdd", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "dfc1509cf28cb4c873ab715754174c10d9ac5253b52c30accb763d614671bbdd", kill_on_drop: false }`
[INFO] [stdout] dfc1509cf28cb4c873ab715754174c10d9ac5253b52c30accb763d614671bbdd
[INFO] running `Command { std: "docker" "create" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-tc2/target:/opt/rustwide/target:rw,Z" "-v" "/var/lib/crater-agent-workspace/builds/worker-5-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" "+645bb72776a6a56a1a8f52631a44bd082b2ba509" "check" "--frozen" "--all" "--all-targets" "--message-format=json", kill_on_drop: false }`
[INFO] [stdout] 5fc065474a8ba11249ab2e532c5888467be9fad8c6543a423f213efe7e6332fc
[INFO] running `Command { std: "docker" "start" "-a" "5fc065474a8ba11249ab2e532c5888467be9fad8c6543a423f213efe7e6332fc", kill_on_drop: false }`
[INFO] [stderr]     Checking unicode-ident v1.0.12
[INFO] [stderr]    Compiling ident_case v1.0.1
[INFO] [stderr]     Checking fnv v1.0.7
[INFO] [stderr]    Compiling syn v2.0.58
[INFO] [stderr]     Checking proc-macro2 v1.0.79
[INFO] [stderr]     Checking quote v1.0.35
[INFO] [stderr]     Checking darling_core v0.20.8
[INFO] [stderr]    Compiling darling_macro v0.20.8
[INFO] [stderr]     Checking darling v0.20.8
[INFO] [stderr]     Checking enumset_derive v0.8.1 (/opt/rustwide/workdir)
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:212:21
[INFO] [stdout]     |
[INFO] [stdout] 212 |                     error(expr.span(), "Enum discriminants must not be negative.")?;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type for type parameter `T` declared on the function `error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:283:13
[INFO] [stdout]     |
[INFO] [stdout] 283 | /             error(
[INFO] [stdout] 284 | |                 largest_discriminant_span,
[INFO] [stdout] 285 | |                 "`repr` is too small to contain the largest discriminant.",
[INFO] [stdout] 286 | |             )?;
[INFO] [stdout]     | |_____________^ cannot infer type for type parameter `T` declared on the function `error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:212:21
[INFO] [stdout]     |
[INFO] [stdout] 212 |                     error(expr.span(), "Enum discriminants must not be negative.")?;
[INFO] [stdout]     |                     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ cannot infer type for type parameter `T` declared on the function `error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error[E0282]: type annotations needed
[INFO] [stdout]    --> src/lib.rs:283:13
[INFO] [stdout]     |
[INFO] [stdout] 283 | /             error(
[INFO] [stdout] 284 | |                 largest_discriminant_span,
[INFO] [stdout] 285 | |                 "`repr` is too small to contain the largest discriminant.",
[INFO] [stdout] 286 | |             )?;
[INFO] [stdout]     | |_____________^ cannot infer type for type parameter `T` declared on the function `error`
[INFO] [stdout] 
[INFO] [stdout] 
[INFO] [stdout] error: aborting due to 2 previous errors
[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 `enumset_derive` (lib) due to 3 previous errors
[INFO] [stderr] warning: build failed, waiting for other jobs to finish...
[INFO] [stdout] For more information about this error, try `rustc --explain E0282`.
[INFO] [stdout] 
[INFO] [stderr] error: could not compile `enumset_derive` (lib test) due to 3 previous errors
[INFO] running `Command { std: "docker" "inspect" "5fc065474a8ba11249ab2e532c5888467be9fad8c6543a423f213efe7e6332fc", kill_on_drop: false }`
[INFO] running `Command { std: "docker" "rm" "-f" "5fc065474a8ba11249ab2e532c5888467be9fad8c6543a423f213efe7e6332fc", kill_on_drop: false }`
[INFO] [stdout] 5fc065474a8ba11249ab2e532c5888467be9fad8c6543a423f213efe7e6332fc